UNIVERSITY OF MARYLAND

DEPARTMENT OF Electrical Engineering

Annual Report 1997-98

A. JAMES CLARK SCHOOL OF ENGINEERING • GLENN L. MARTIN INSTITUTE OF TECHNOLOGY The Department of Electrical Engineering is one of the premier units in the A. James Clark School of Engineering at the University of Maryland. With 61 regular faculty members, 900 undergraduate students, 450 graduate students and $27.5 million in research expenditures, the Department is home to some of the most active, innovative and exciting education and research programs in the country.

For more information on the Department of Electrical Engineering, please contact:

Professor Nariman Farvardin Professor Charles Striffler Chair Associate Chair, Facilities and Services 301/405-3683 301/405-1238 [email protected] [email protected]

Professor Adrian Papamarcou Professor Steven Tretter Associate Chair, Undergraduate Studies Director, M.S. in Telecommunications Program 301/405-3664 301/405-3670 [email protected] [email protected]

Professor André Tits Associate Chair, Graduate Studies 301/405-3669 [email protected]

Professor Gilmer Blankenship Associate Chair, External Affairs 301/405-3632 [email protected]

Publications Editors: Eric Schurr and Nancy Swader. Table of Contents

Electrical Engineering Advisory Board...... 3

Industrial Affiliates Program...... 4

Chair?s Report...... 5

Faculty and Staff

1997-98 Faculty...... 8

1997-98 Staff...... 9

1997-98 Faculty/Staff Honors and Awards...... 10

Education Programs

Undergraduate Programs...... 12

Graduate Programs...... 15

M.S. and Ph.D. in Electrical Engineering...... 15

M.S. in Telecommunications...... 17

Professional Master of Engineering...... 18

Student Honors, Awards and Scholarships...... 19

Graduate Degrees Granted...... 21

Research Activities

Research Activities Overview...... 24

Affiliated Research Units...... 25

Major Research Laboratories...... 29

Contracts and Grants...... 38

Faculty Profiles...... 45

Distinguished Lecturer Series...... 88

Third Annual Research Review Day...... 89

In the News...... 90

University of Maryland · Department of Electrical Engineering 1 Electrical Engineering Advisory Board

The Department of Electrical Engineering’s advisory board consists of representatives from industry, government laboratories, and academe. The board offers the Department expert advice on topics such as strategic planning and curriculum revision. The board meets formally once yearly, although members are actively involved with the department’s activities throughout the year.

Department of Electrical Mr. Raymond W. Godman, Jr. New Advisory Board Engineering Advisory Vice President and General Manager Members for the 1998-99 Board Members TRW Information Services Division Academic Year

Dr. Hamid Ahmadi Mr. John Kenyon Mr. John R. Aberg Vice President, Networking and Senior Vice President for Engineering Manager Distributed Systems Research Hughes Network Systems Aerospace Engineering R&D AT&T Laboratories Research Northrop Grumman Corporation Dr. Edward J. McKinney Mr. Farzin Arsanjani Technical Director, NBD - Marketing Mr. John C. Borum President General Dynamics Advanced Vice President HTR, Inc. Technology Systems Lucent Technologies, Inc.

Dr. Jim Chadwick Dr. James M. O’Connor Dr. Glenn Roberts Chief Engineer Senior Member, Technical Staff Chief Engineer, Center for Advanced Mitre Corporation Microelectronics & Technology Center Aviation Systems Development AlliedSignal, Inc. Mitre Corporation Dr. Timothy Coffey Director Dr. Panos Papamichalis Dr. William E. Witowsky Naval Research Laboratory TI Fellow Sr. Vice President and Chief Technical Manager, Digital Communications Officer Dr. Robert Cooper Technology TELOGY Networks, Inc. President Texas Instruments, Inc. Atlantic Aerospace Electronics Corp. Mr. Milan Vlajnic Mr. Timothy Ruppalt Director of Engineering Dr. Lee D. Davisson Technical Services Bay Networks, Inc. Professor Emeritus Bethlehem Steel Corporation

Mr. Vito DeMonte Mr. David M. Shupe Principal Retired, former Senior Research Booz·Allen & Hamilton Corporation Manager AlliedSignal, Inc. Dr. Donald H. Foley Sector Vice-President Mr. Jonathan Sieg SAIC Vice President/General Manager Bay Networks, Inc. Mr. Chris Gerding Vice President for Risk Management Citibank Corporation

University of Maryland · Department of Electrical Engineering 3 Industrial Affiliates Program

The Department of Electrical strengthen the ties between the Engineering’s Industrial Affiliates company and the department. Program (IAP) continued to display its Additional Benefits to vitality as a thriving collaborative effort Members between industry and the university last year, growing by three members. Bay • Departmental Resource Database Networks, Telogy Networks, and Radio • Special Recruiting Events Dynamics became the newest members • Advertisement of Job Openings of the program, joining eight other • Seminars companies in an effort that has spawned • Library Privileges increased research opportunities, • Short Courses scholarships, fellowships, job • Web Page Links opportunities, and increased interaction Levels of Affiliate between industry and the department’s Participation students and faculty. Pictured: Students Melissa Moy and John Kim • Friends The Industrial Affiliates Program is relax during the Research Internships in • Small Business Affiliates designed to promote relationships that Telecommunications Engineering Program • Associates foster the sharing of resources, (RITE) Site visit to the facilities of IAP • Partners knowledge and facilities in a synergistic member Hughes Network Systems. climate of cooperation and growth. The Current Affiliate Members department offers resources such as scholarships, some companies with research facilities and personnel, critical needs for engineer recruits may AlliedSignal, Inc. graduating students, an extensive add stipulations to their scholarship Bay Networks, Inc. funding that require the student to database of current and past research Hughes Network Systems projects, and accumulated knowledge. interact with the company and/or serve Industry Affiliates’ contributions internships in the company either Marconi Systems Technologies, include financial support and the insight during the school year or during the Inc. and understanding into current real- summer. Northrup Grumman Corporation world technical problems in the Establishing and Maintaining Education Pulse Electronics business world. This relationship and Research Facilities: Education and Mitre Corporation promotes the identification and research facilities are critically needed at Radio Dynamics, Inc. resolution of real world problems every level, from basic undergraduate Telogy Networks, Inc. through the efforts of this larger teaching labs to facilities equipped with Texas Instruments, Inc. community, formed from mutual need state-of-the-art equipment required for and developed with a vision of the our world-renowned faculty’s research TRW, Inc. future. projects. IAP members can donate Participation in the Affiliates laboratories in an area of critical need Program to their own business. Named after the company, the lab then provides a The IAP is custom-designed to meet source of pride, name recognition and each individual member’s needs. IAP real benefit through trained potential member companies usually participate new hires and faculty research in one of the following three programs. conducted in the lab. Designated Graduate Fellowship and Establishing Faculty Development Awards: Undergraduate Scholarships: IAP members IAP members can establish can support outstanding graduate development awards to help support the students with named fellowships, or research and educational activities of Pictured: Ms. Jacqueline Rybacki, from talented undergraduate students with one or more young and energetic affiliate member AlliedSignal, with students named scholarships. While name faculty members in the areas of need to Mikhail Itskovich and David Wenzel, recognition is sometimes the primary their business. The awardee will interact particiapants in the undergraduate Research motivation and expected gain with Internships in Telecommunications closely with the company and help these named fellowships and Engineering (RITE) Site program.

4 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Chair’s Report

Prof. Timothy Horiuchi, in analog VLSI Telecommunications Program, to launch (Ph.D., California Institute of a major expansion of the program. Technology); and Prof. Patrick O’Shea, Finally, Ms. Karen Thornton was hired in microwave and beam technologies as the Coordinator for Personnel and (Ph.D., University of Maryland) who Research. will come back to his alma mater after having spent a few years in national labs and on the faculty of Duke University. Education The first three joined the department in Programs Fall ‘98; Dr. O’Shea will join the department in Spring ’99 and Dr. Horiuchi will join us in Fall ’99. While Nariman Farvardin, Professor and Chair Dr. O’Shea who will join us at the During the past year, we awarded 153 Associate Professor level, the other four B.S., 54 M.S. and 36 Ph.D. degrees in are Assistant Professors. This will bring electrical engineering, 14 degrees in the am delighted to share with you the the number of faculty hired in the past M.S. in Telecommunications Program highlights of the collective two years to nine! These appointments and six in the Master of Engineering accomplishments of the faculty, staff I add significant strength to the Program. and students of the Department of department in areas of critical and Electrical Engineering during the period The demand for the newly established strategic importance. With these new August 1997-August 1998. As you will computer engineering degree program appointments, 15% of all the faculty will note in the following paragraphs and in has exceeded all expectations, thus be assistant professors—up from 5% only the body of the Annual Report, we have presenting new opportunities and two years ago. completed another year of strong challenges. In just its second year, the performance, representing significant Another development that is likely to computer engineering program has progress in a number of important have an important impact on the future attracted the largest number of areas. growth of the department is the freshmen in the College of Engineering. approval of funding, through the In Fall ’98, we had 114 freshmen in New Faculty Flagship Initiative, for expanding and computer engineering (average SAT and Staff strengthening our research and score 1309) and 69 freshmen in educational programs in information electrical engineering (average SAT technology and in small smart systems. score 1309). Compared to one year ago, These new funds will allow us to the number of newly enrolled freshmen continue adding new faculty in two is down in electrical engineering and up For the second year in a row, we had a areas of critical need and strategic in computer engineering. However, the remarkably successful faculty importance for the department. aggregate freshman enrollment in these recruitment effort that led to the hiring We continued to make progress in two programs represents a growth of of five outstanding new faculty more than 25% in one year and 75% in members: Prof. Manoj Franklin, in building a stronger administrative staff infrastructure. We hired Dr. Lisa Kiely, two years! As a result, the total computer architectures (Ph.D., undergraduate enrollment in the University of Wisconsin) who joined us as the Academic Coordinator for Undergraduate Affairs, and Ms. Robyn department has taken a sharp upward after serving on the faculty of Clemson turn. What is most impressive is that University for the past four years; Prof. Isom as Undergraduate Administrative Assistant. These two appointments have this growth in enrollment is Diana Marculescu, in power analysis for accompanied by an increase in the VLSI systems and embedded systems materially enhanced the quality and scope of the operations of our average SAT score of the newly (Ph.D., University of Southern enrolled students—a clear sign of a California); Prof. Haralabos undergraduate office. We also hired Ms. Christine Weimer as Computer System healthy, viable and high-quality Papadopoulos, in signal processing for academic program. wireless communications (Ph.D., Analyst to improve our computing Massachusetts Institute of Technology); services, and Mr. Asante Shakuur, as the At the graduate level, our enrollment Associate Director of the M.S. in continues to grow. Our graduate student

University of Maryland · Department of Electrical Engineering 5 recruitment efforts in electrical organized during the past summer. The Optoelectronic Devices, engineering were extremely successful. attendees included a large number of Interconnects and Packaging; and the Of the nearly 1200 applications faculty members, students and staff. The Army Research Laboratory received, only 209 were admitted discussions in the retreat led to a set of Microelectronics Research Center. (approximately one in six) while 102 recommendations that will serve as the ended up joining our department. What starting point for the discussions of a is remarkable is the quality of these Curriculum Revision Committee that Facilities students as represented by an average was formed in Fall ’98. GRE score of 2041! The enrollment in the M.S. in Telecommunications Program continues to increase, and, in Research view of our plans for expanding the Programs scope and size of this program, I expect We have been working on improving this trend to accelerate. The enrollment the computer and laboratory facilities of in the Master of Engineering Program the department, especially in areas of strategic importance and of high student also continues to grow. The research activities of the demand. The Department launched a new NSF- department continued to expand and funded initiative last year to provide branch out into new domains. The total The construction of our first computer- research experiences for research expenditures of the faculty in assisted instructional facility was undergraduates. This program, called fiscal year 1998 exceeded $27,500,000, completed and the facility began Research Internships in setting a new record (see Fig. 12, p. 37). operation in Spring ’98. This facility, Telecommunications Engineering A number of major block grants and a called the AlliedSignal Computer (RITE), attracted 19 students from a large number of smaller grants provide Classroom, was funded by a generous gift very talented pool of 75 applicants. the funding for our ongoing research from AlliedSignal Corporation and These students participated in a number programs. Some of the block grants supports the instruction of a number of of carefully designed research projects representing areas of significant courses in the department. Construction and learned how to work in a team research activity are listed below. of the Integrated Circuit Fabrication Laboratory, a new laboratory that environment. Students’ research • Information Sciences and Systems: supports both research and instruction, activites were augmented by field trips NASA Center for Satellite and was also completed. For the first time, to telecommunications companies, and Hybrid Communications; DoD two sections of a senior-level integrated seminars on: trends and emerging funded initiative in automated circuit fabrication laboratory course technologies in telecommunications, vision/sending; two Army Research were offered in Fall ’98, and both technical communications, research Laboratory Federated Labs in sections are full. careers and preparation for applying to Advanced Communications and graduate school. In addition to the Information Distribution and in Construction of the Jasmine International University of Maryland, we had Advanced Sensors; DoD-funded Telecommunications Instructional Laboratory students from Carnegie Mellon Nonlinear Active Control of is well underway. This facility will University, Rensselaer Polytechnic Dynamical Systems; DoD-funded consist of two components: A real-time Institute, George Washington Advanced Acoustics and Auditory communications system design teaching University, and Virginia Polytechnic Processing Center; and DoD-funded laboratory that was completed in Institute. The students and the faculty Design and Control of Smart Summer ’98 and is fully operational were pleased by the program. Structures. now, and a computer-assisted Subsequently, many of the students are • Electronic Sciences and Devices: instructional facility equipped with the continuing their research projects over DoE-funded Accelerator Research state-of-the-art design and simulation the academic year. We consider this a Program; NSA-funded tools for communications, networks and very important new initiative, and will Supercomputer Optical signal processing systems. The second be active in institutionalizing this Interconnects; NSA-funded Joint component is under construction and program, as well as seeking funding Program for Advanced Electronic will be operational in Spring ’99. from sources other than NSF to expand Materials; DoD-funded Laboratory Finally, another major research and it even further. for Ion Beam Research and educational facility currently under To review our undergraduate Applications; DoD-funded High construction is the Marconi Computer curriculum, assess its strengths and Power Microwave Sources; NSF Engineering Laboratory, consisting of a weaknesses, and propose ideas for industry-funded Industry/University computer architecture laboratory, an improving it, a one-day retreat was Cooperative Research Center in embedded systems laboratory, a

6 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology computer projects design laboratory and a general facility complementing Closing the instruction of a number of lecture- Remarks based courses in computer engineering. This facility, funded by a generous gift from Marconi Systems Technologies, Inc., will dramatically enhance our new I would like to express my thanks to all research and educational programs in the faculty and staff who have been computer engineering. We expect this working relentlessly to propel our facility to be operational in Spring- research programs forward, improve the Summer ’99. quality of education we provide to our students, and enhance the image of the Other department within and outside the Faculty and university. I take pride in the collective Staff News accomplishments of our faculty, staff and students, and will continue to work closely with them toward achieving higher levels of excellence with the aim After many years of dedicated and of building one of the strongest distinguished service to the institution, electrical engineering educational and Professors Martin Reiser and Fawzi research programs in the nation. Emad retired last year. Like most other recent retirees, they will both remain Nariman Farvardin involved with scholarly activities. In Professor and Chair addition, three of our dedicated staff Fall ‘98 members, Ms. Barbara Aycock, Ms. Betty Penniman and Mr. Ron Sumner retired during the previous year. We are grateful to these colleagues for their contributions over the years and wish them a happy retirement. The faculty and staff continued to receive prestigious awards and recognitions. Prof. Victor Granatstein received the 1998 Robert L. Woods Award for Excellence in Vacuum Electronics, Prof. Shuvra Bhattacharyya received the NSF CAREER Award, Prof. P. S. Krishnaprasad was selected as the 1998-2000 Distinguished Faculty Fellow, Prof. Romel Gomez received the George Corcoran Award for his significant contributions to electrical engineering education, and Prof. H. C. Lin received the Office of Technology Liaison Invention of the Year Award. Professor André Tits was elected Fellow of the IEEE. Mr. Eric Schurr received the Electrical Engineering Outstanding Staff Award for his service to the department.

University of Maryland · Department of Electrical Engineering 7 1997-98 Faculty Regular Faculty Associate Professors Daniel Magherefteh Professors Thomas E. Fuja Saeed Pilevar Eyad H. Abed Neil Goldsman Penelope Polak-Dingels Ashok K. Agrawala (Affiliate) James Hendler (Affiliate) Igor Smolyaninov Thomas M. Antonsen, Jr. Agis Iliadis John S. Baras K. J. Ray Liu Research Associates David F. Barbe Adrian Papamarcou Walid Atia Gilmer L. Blankenship Charles B. Silio Edward Burke Samuel J. Campanella (Affiliate) Leandros Tassiulas Robert E. Bartolo Rama Chellappa Steven A. Tretter Pak Shing Cho Mario Dagenais Chia-Hung Yang Eric Funk Christopher C. Davis (Associate Dean) Peter Heim Nicholas DeClaris Assistant Professors Minna Hovinen William W. Destler (Dean) Shuvra Bhattacharyya Valeria D. Kleiman Fawzi P. Emad Joseph Bernstein (Affiliate) Kun-Jing Lee Anthony Ephremides Jerome A. Gansman Ying-Chang Liang Nariman Farvardin (Chair) Romel D. Gomez Jiang Liu Jeffrey Frey Jeffrey Hollingsworth (Affiliate) Scott Merritt Evaggelos Geraniotis Bruce Jacob Daniel C. Parks Virgil D. Gligor Peter Keleher (Affiliate) Alba Lalitha Ramaswamy Julius Goldhar David B. Stewart Claudio Serpico Victor L. Granatstein Donald Yeung Jun Shan Wey Ping-Tong Ho Joseph F. JáJá Professors Emeriti Adjunct Research Associate Perinkulam S. Krishnaprasad Lee D. Davisson Steven Saddow Donald N. Langenberg (Chancellor) Robert O. Harger Wesley G. Lawson Urs E. Hochuli Faculty Research Assistants Chi H. Lee Panos Ligomenides Steven Baker William S. Levine Hung C. Lin John C. Chu Armand M. Makowski Leonard S. Taylor Tie-Fu Ding Steven J. Marcus T. C. Gordon Wagner Timothy Filemyr Isaak D. Mayergoyz Russell Frizzell John Melngailis Associate Professor Emeritus Vildana Hodzic Howard Milchberg James H. Pugsley David Huang Kazuo Nakajima John V. Hryniewicz Prakash Narayan Other Faculty Oliver King Robert W. Newcomb Alan Klein Jon Orloff Adjunct Professor Xueli Qiao A. Yavuz Oruç Hirsch Mandelberg David Rush Edward Ott Ralph Whaley Martin Peckerar Research Associate Professor Herbert Rabin (Associate Dean) Patrick Dowd Part-Time Lecturers Martin P. Reiser Charles Alexander Moon-Jhong Rhee Adjunct Associate Professor Michael Dellomo Azriel Rosenfeld (Affiliate) Joseph Mait Kamran Etemad Shihab Shamma Allen Goldberg Mark A. Shayman Assistant Research Scientists William Hawkins Charles D. Striffler Nader Moayeri Sambhu Agarwala André L. Tits Mansour Oveissi Pierre Barbier Thirumalai Venkatesan B. James Wilson Uzi Y. Vishkin Wei-Lou Cao Kawthar A. Zaki Brent Little

8 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology 1997-98 Staff

Director of Administrative Services Terry M. Clark Coordinator for Personnel and Research Karen S. Thornton Coordinator for Public Relations Eric Schurr Chair’s Office Nancy L. Swader Executive Administrative Assistant I Accounting Office Julie O’Donnell Acount Clerk II Pictured: Staff members joining the department withing the past year. Back row: Asante Marion Devaney Shakuur. Front, from left to right: Lisa Kiely, Robyn Isom, Chirstine Weimer, Karen Account Clerk III Thornton, Elisabeth El’Khodary and Heidi Herne.

Olivia M. Goetz M.S. in Telecommunications Elizabeth D. Penniman Program Management Specialist I Office Data Processing Production Control Manager Claudia J. Hussey Asante Shakuur Accounting Associate Associate Director, M.S. in Rex L. Root Teresa Moore Telecommunications Program Data Processing Operations Manager Coordinator for Block Research Grants Undergraduate Office Christine Weimer Hilary E. Neal Systems Anaylist Office Clerk II Dolores A. Harris Office Supervisor III Engineering Technicians Annie L. Poulin David Evans Program Management Specialist I Robyn Isom Engineering Technician III Undergraduate Administrative Assistant Allison Spurrier Shyam Mehrotra Coordinator for Block Research Grants Lisa Kiely Engineering Technician III Academic Coordinator for Undergraduate Graduate Office Matters Robert Seibel Engineering Technician III Dorothy C. Chu Scientific Typists Program Management Specialist Ronald Sumner Saroj Bhandari Supervising Engineering Technician I Elisabeth El’Khodary Word Processing Operator Scientific Academic Coordinator for Graduate Laboratory for Physical Matters Patricia T. Keehn Sciences Word Processing Supervisor Maria Hoo Edgar Bilger Administrative Assistant II Katrina Greene Storekeeper II Administrative Assistant II Marlee McKenna Robert Krause Administrative Assistant II Computing Staff Storekeeper II Heidi Herne Director, Computing Facilities

University of Maryland · Department of Electrical Engineering 9 1997-98 Faculty/Staff Honors and Awards

Faculty Krishnaprasad’s research interests lie in also the recipient of a 1985 NSF Fellow, Institute of Electrical and the broad area of geometric control Presidential Young Investigator Award. Electronic Engineers theory and its applications. He is currently the Editor, Technical Notes and Correspondence for IEEE André Tits Prof. Shuvra Bhattacharyya Transactions on Automatic Control. Fellow, Institute of Electrical and Professor Shuvra Dr. Tits’ main research interests lie in Electronic Engineers Bhattacharyya received Nariman Farvardin various aspects of optimization-based a National Science system design and robust control. The Robert L. Woods Award Foundation (NSF) Feasible Sequential Quadratic Program- Victor Granatstein Faculty Early Career ming (FSQP) algorithm, developed and Development (CA- NSF CAREER Award refined over the past 10 years by an REER) Award in the Shuvra Bhattacharyya ISR/Electrical Engineering research area of Signal Processing Systems. group headed by Dr. Tits, is now in use Office of Technology Liaison 1997 Dr. Bhattacharyya joined the depart- at more than 500 sites worldwide. Invention of the Year Award ment in the summer of 1997 from Hung C. Lin Hitachi America's Semiconductor Prof. Romel D. Gomez Department of Electrical Engineering Research Lab in San Jose, California. Prof. Romel. D. Gomez George Corcoran Award He received his Ph.D. from the Univer- received the Prof. Romel D. Gomez sity of California at Berkeley. His department’s George Celebrating Teachers Award primary research interests are in Corcoran Award for the Chia-Hung Yang, Kawthar Zaki computer-aided design for embedded 1997-98 academic year. systems, VLSI signal processing, This faculty award is Distinguished Research Faculty Fellow parallel computation, and software presented for signifi- Perinkulum S. Krishnaprasad synthesis. cant contributions to The NSF CAREER Award is a founda- electrical engineering education, Staff tion-wide program that encourages the campus leadership, contributions at the Department of Electrical integration of education and research. national level, and creative and other Engineering Staff Service Award scholarly activities. Eric Schurr Prof. André L. Tits Gomez, who joined the department in Prof. André Tits was 1991, received his Ph.D. in Physics from Spotlight elected Fellow of the University of Maryland in 1990. His IEEE with the research focuses on information storage Prof. P. S. Krishnaprasad citation, “for contribu- technology and the fundamental nanoscopic properties of magnetic thin Prof. Perinkulam S. tions to optimization- films. He is engaged in the development Krishnaprasad was based design and of scanned probe magnetic microscopy selected as one of robust control.” to understand the physics of magnetism three Distinguished Tits, who joined the at reduced dimensions, as well as the Faculty Research University of Maryland in 1981, also development of new magnetic devices Fellows for the period serves as Associate Chair for Graduate that utilize the novel properties of of 1998-2000. This Studies, and holds a permanent joint magnetic films at the nanometer length university-wide award appointment with the Institute for scales. With more than 30 authored is intended to recognize “emerging, Systems Research. papers and U.S. Patents on these and rising or recently recognized stars.” He is a member of the Mathematical other related subjects, Gomez also This award is a recognition of Prof. Programming Society, the Society for serves as editor for IEEE Transactions on Krishnaprasad’s tremendous research Industrial and Applied Mathematics, Magnetics, and is a member of the accomplishments and profound schol- and the Association des Ingénieurs Editorial Board. arly contributions over the years. sortis de l'Institut Montefiore. He was

10 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Education Programs

Pictured: Student Lesley Leposo, from Carnegie Mellon University, displaying a poster presentation of his research project at the Research in Telecommunications Engineering (RITE) Site fair. Lesley, along with eighteen other students, participated in the NSF-funded RITE Site summer program. Lesley’s research project was titled “Object-Based Design of Device Drivers for Real-Time Operating Systems: A Remote Controlled Embedded System.”

he Department of Electrical Engineering’s educational programs feature innovative Tacademic and research initiatives, talented and enthusiastic students, and a team of distinguished and internationally recognized faculty. The department’s educational activities during the past year are summarized in the following pages.

Pictured: The University’s new Integrated Circuit Fabrication facility, used for a new senior-level course in microchip fabrication.

Pictured: The new AlliedSignal Computer Classroom, featuring the latest in computerized instruction technology.

University of Maryland · Department of Electrical Engineering 11 Undergraduate Programs

The Department of Electrical Fig. 1. Undergraduate Enrollment in Electri- Engineering continued to strengthen its cal Engineering and Computer Engineering activities in the area of undergraduate education. Highlights of the 1997-98 academic year include the inauguration of the Computer Engineering degree program, now the most popular major for new students in the Clark School of Engineering; and the first Research Internships in Telecommunications Engineering (RITE) program, held during the summer under sponsorship from the National Science Foundation. Student Recruitment and Retention In an effort to attract highly talented high school students from Maryland and elsewhere, the Department continues to supplement (and in certain cases match) merit scholarships awarded Fig. 2. Baccalaureate Degrees Awarded in by the Clark School of Engineering and Electrical Engineering the Office of Undergraduate Admissions. While the majority of the Department’s scholarship funds are provided by industrial affiliates, a significant portion is contributed by faculty. The Department advertises its undergraduate programs to more than 150 high schools and is also planning a number of high school visits during the 1998-99 period. Recent recruitment efforts have resulted in notably higher yield rates, with the Fall 1998 yield rate surpassing the two-thirds mark. An important priority for the Department is to provide a diverse and supportive environment for women and Fig. 3. SAT Scores for Entering First-Year under-represented racial groups. In Students Spring 1998, 129 women and 89 African American undergraduates were enrolled. In an effort to further support the two undergraduate programs, the Department more than doubled the number of Undergraduate Teaching Fellowships it offered to students. These awards provide qualified undergraduates with opportunities to assist their peers in lower-division courses. Enrollment and graduation statistics are

12 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology shown in Figures 1 and 2, while student Fig. 4. EE and CP Undergraduate Student SAT scores and demographics are Demographics: Spring 1998 summarized in Figures 3 and 4. It should be noted that the total first-year enrollment in the two degree programs, Electrical Engineering (EE) and Computer Engineering (CP) increased from 139 in Fall 1997 to 183 in Fall 1998. At the same time, the enrollment ratio between the two majors changed dramatically in favor of Computer Engineering: EE enrollment dropped instructional facility accommodating 24 projects continues to grow. In addition from 92 to 69, while CP enrollment students, was opened in Fall 1997. The to the activities of the RITE Site (see rose from 47 to 114. The average SAT classroom is currently being used for below), the Department also showcased scores for the Fall 1998 entering lectures and recitations in three its undergraduate projects in design students was 1309 (same for EE and undergraduate courses. The Marconi competitions and exhibits nationwide. CP), up four points from the Fall 1997 Computer Engineering Laboratory will An interdisciplinary project involving average. open in 1999. It will incorporate electrical engineering, mechanical Educational Innovation research laboratories in computer engineering and computer science architecture and embedded systems, as majors was featured in an international The Department has initiated a review well as instructional areas and pinball machine competition in of its undergraduate programs to assess workspace. The Jasmine International February 1998. In addition, two their effectiveness in meeting the Telecommunications Instructional Maryland EE teams, led by Professor evolving needs of the electrical and Facility will be fully operational by David B. Stewart, were among the ten computer engineering professions, and early 1999. The two instructional finalists in the 1998 Motorola in educating a diverse and growing laboratories in the Jasmine Facility will University Design Contest for computer constituency of students. In August, 20 be equipped with computer chip-based applications. members of the faculty and 20 workstations, digital signal processor- The systematic integration of research undergraduate students gathered at a based hardware and software, and other into the undergraduate curriculum retreat to exchange ideas on curriculum instructional telecommunications continues to be a key priority. In Fall improvement. Parallel sessions explored modules. the themes of computer-aided and 1997, the department initiated the laboratory instruction, technical A new senior-level course in microchip Indoor Wireless Project with funding content, professional components, fabrication was introduced for the Fall from the National Science Foundation. student preparation, and long-term 1998 semester. The course is being This project course, targeted at seniors visions for the Department’s taught by Professor Melngailis in the and beginning graduate students, educational mission. Several areas of Integrated Circuit Fabrication combines instruction with research in improvement were identified, and Laboratory. Student response has been the areas of communications, signal participants concurred that a thorough enthusiastic, and course enrollment is processing and networking. The goal of review of the curriculum was necessary. expected to double for the Spring 1999 the project is to design, implement and An ad hoc committee will continue semester. test a wireless network for two-way voice communication, data transfers work on the issues raised during the Undergraduate involvement in research retreat, and will make concrete recommendations on curriculum reform.

The Department added Pictured: (from left to right) new instructional and Rite Site students research facilities last Meenakshi Narayanan, Melissa year which will be of Moy, Zeggai Andemariam, particular benefit to Jeffrey Hazen, Susan Tsao, undergraduate students. Lesley Leposo, Jarriel Cook, The AlliedSignal Alan Leung, John Kim, Computer Classroom, a Jiwanjot Tulsi, Justin Bowlus, state-of-the-art Mikhail Itskovich, Matthew computer-aided Guyton, Julian Requejo, and Thomas Carley.

University of Maryland · Department of Electrical Engineering 13 was nineteen highly talented and at the RITE Site Fair. The projects were enthusiastic interns, who made their reviewed by a panel consisting of EE vibrant presence felt throughout the faculty and experts from industry. Department. Participants, projects and awards are listed below. At the end of the eleven-week program, students gave oral presentations and poster demonstrations of their projects

Pictured: RITE Site Students Julian Research Internships in Telecommunications Requejo, Jeffrey Hazen and Meenakshi Engineering (RITE) Site Presentations and Posters Narayanan display their research project, “Echidna: A Reconfigurable Real-Time Operating System for “Trade off Between Speech Compression and Digital Signal Processors” Channel Coding for a Fixed Transmission Students: Melissa Moy and Thomas Carley, Best Project Award Rate” during the RITE Site Fair. Advisor: Dr. David B. Stewart “MMSE Reconstruction of Wavelet Encoded Images” and (eventually) video transmission on Student: Teen Sheng, Best Project Award an adaptable hardware platform. Advisor: Dr. Nariman Farvardin Research Internships in “Auditory Measures of Speech Intelligibility” Telecommunications Student: Matthew Guyton, Most Promising Project Award Engineering (RITE) Advisor: Dr. Shihab Shamma During the summer of 1998, the “Characterization of an Optical Communications Channel” Department launched its Research Students: Ronald De Guzman and David Wenzel Internship in Telecommunications Advisor: Dr. Christopher Davis Engineering (RITE) Site initiative. The RITE Site provides opportunities for “Quality of IP Telephony in the Presence of Network undergraduate students from Maryland Congestion” and elsewhere to engage in research in Students: Susan Tsao and John Kim the broad area of telecommunications. Advisor: Dr. Mario Dagenais Funding for this initiative is provided by “Trade off Between Speech Compression and Channel Coding the National Science Foundation under for a Fixed Transmission Rate” its Research Experiences for Students: Meenakshi Narayanan, Jeffrey Hazen and Julian Undergraduates (REU) program. Requejo The RITE Site matches undergraduates, Advisor: Dr. Adrian Papamarcou typically entering their junior or senior “Low Overhead Motion Compensation for Video Coding” years, with individual or team projects Student: Jarriel Cook supervised by faculty. In addition to Advisor: Dr. Nariman Farvardin conducting research, students participate in field trips to companies “Dynamic Packet Reservation Multiple Access Performance and government labs, attend technical Evaluation” presentations given by experts in the Student: Alan Leung telecommunications field, and receive Advisor: Dr. Nariman Farvardin career guidance as well as information “Phase Delay Implementation for Noise Reduction in on graduate study in the field. Earphones” Participants receive a stipend and are Student: Jiwanjot K. Tulsi compensated for travel, room and Advisor: Dr. Hung C. Lin board (as appropriate). Most students are also given the option of continuing “Object-Based Design of Device Drivers for Real-Time their projects during the academic year. Operating Systems: A Remote Controlled Embedded System” Students: Lesley Leposo and Zeggai Andemariam This year’s pool of applicants comprised Advisor: Dr. David B. Stewart 75 students. Half of those accepted to the Site where chosen from universities “Design of Plastic Cell Architecture” other than Maryland. The final yield Students: Dan Roddy, Justin Bowlus and Mikhail Itskovich Advisor: Dr. Kazuo Nakajima

14 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Graduate Programs

Exciting new developments took place Fig. 5. Average GRE Scores this past academic year on all fronts of the graduate program, namely: the traditional M.S. and Ph.D. programs in Electrical Engineering; the more recently established cross-disciplinary M.S. program in Telecommunications, which the department administers, and the Professional Master of Engineering program, administered by the School of Engineering, in which the department participates. M.S. and Ph. D. in Electrical Engineering The graduate programs in Electrical Engineering continue to climb the top ranks! Last year’s internal review of our department (within the context of all Fig. 6. Number of Applicants, Admitted and Enrolled the university’s graduate programs) was Students stellar. The department was listed as one of six to receive Special Distinction among the 13 programs labeled as having achieved Established Excellence. This achievement is echoed in the department’s national ranking. Accord- ing to the 1995 report of the National Research Council on Research-Doctor- ate Programs, among public institutions, the Department’s ranking was second best among all electrical engineering departments on the eastern seaboard and 9th among all electrical engineering departments in the United States. As another indicator of our collective progress, in early 1998, the College of Engineering was ranked 8th nationally among public institutions, by U.S. News Fig. 7. Graduate Degrees Awarded and World Report. With this momentum, we continue to strengthen our graduate program every year. On the curricular front, this year we made major changes to the M.S. and Ph.D. degree requirements. In particu- lar, all our students must now perform outstandingly in core graduate courses. With regards to the caliber of our graduate students, our applicant pool continues to grow in number and quality (see Figs. 5 and 6). This year we processed close to 1200 applications

University of Maryland · Department of Electrical Engineering 15 and admitted a very select few. The Fig. 8. EE Graduate Enrollment GRE scores of these very bright 209 students who were admitted averaged 2067, clearly showing that our program’s caliber is growing concur- rently with its attractiveness. Our enrollment remains steady, the trend being toward higher proportions of Ph.D. students (see Fig. 8) and full- time students (see Fig. 9). Nearly all full-time graduate students receive full financial aid. In 1997-98 there were 42 graduate teaching assistants, 179 graduate research assistants, and 51 graduate fellows. During the Spring 1998 semester, 53 of our students were women. We have also enriched our course offerings in terms of advanced topic Fig. 9. Total EE Graduate Enrollment: Full or Part-Time courses, covering state-of-the-art research. Examples of such courses this past year include: Multi-user Informa- tion Theory and Cryptography; Digital Image Processing; Modeling, Analysis, and Optimization of Embedded Software; Microelectronics Device Reliability; Materials and Processes for Microelectronics; Passive and Low Power Microwave Devices; Modern Analytical and Geometric Approaches to Classical Mechanics and Control Theory I & II and Microarchitecture. This past academic year, we awarded 54 M.S. degrees and 36 Ph.D. degrees. See Fig. 7 for a history of degrees awarded over the recent past. We are proud of our recent graduates who continue to get prestigious positions in the industry and academia. Especially noteworthy are the recent successes Fig. 10. Enrollment in the M.S. in Telecommunications achieved by Jiping He (Ph.D. 1988) Program who has just received tenure at Arizona State University, Department of Chemical, Bio and Materials Engineer- ing and Yagyensh C. Pati (Ph.D. 1992) who became President and CEO of Numerical Technologies, Inc. Finally, the administrative structure of our graduate office has been significantly strengthened, with the creation of the position of Academic Coordinator for Graduate Matters, occupied by Ms. Elisabeth El’Khodary (Welcome Elisabeth!). The Academic

16 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Coordinator is responsible for all Fig. 11. M.S. in Telecommunications Degrees Awarded administrative matters of relevance to the M.S. and Ph.D. programs in Graduates Electrical Engineering. M.S. in Telecommunications 1995-96 The Master of Science in Telecommunications degree program, developed in 1993 and administered by 1996-97 the Department of Electrical Engineering, has grown into a vibrant academic program. With the explosive growth of the telecommunications 1997-98 industry, global economic trends and corresponding technological expansion, 03691215 the department decided last year to take measures to expand this successful degree program even further. have gone on to work for corporations The following courses were offered in In the past five years, student such as Sprint, Texas Instruments, GE the program last year: enrollment has more than doubled (see Information Systems, and NSA. Last Fig. 10). New, state-of-the-art classes year, 14 students graduated from the • Telecommunications Project have been developed, such as PCS program (see Fig. 11). • Principles of Telecommunications System Implementation, Economics of Systems The M.S. in Telecommunications International Telecommunications, and program offers a unique, cross- • Management and Organizational Introduction to Cellular disciplinary training in Behavior in the Communication Networks, to ensure telecommunications to professionals in Telecommunications Industry that the latest developments in the areas of telecommunication systems • The Economics of International telecommunications technology are technology, management, regulatory, Telecommunications Policy and offered in instruction. and policy issues. In accord, the Regulation The Department hired Asante Shakuur program draws upon the strengths of • Competitive Strategies and Public last year as Associate Director for the four nationally-renowned colleges and Policies in Telecommunications M.S. in Telecommunications Program. schools at Maryland—Engineering; • Telecommunications Marketing Mr. Shakuur will implement a more Business and Management; Computer, Management aggressive student recruiting strategy, Math and Physical Sciences; and Public • Telecommunication Networks bringing this exciting, innovative Affairs. • Communication Protocols program to even more local industry Core coursework includes work in • Network Security and government professionals. Last signals and system theory, network • Network Software Design and year, 46 students were enrolled in the design and management, plus current Performance program. The department’s goal is to policy and economic factors driving the • Digital Signal Processing have 100 students actively enrolled by global industry. In addition, industry • Network Management the Fall 2001 semester. leaders offer seminars on current • Introduction to Cellular In an effort to help facilitate the telecommunications issues, balancing Communication Networks program’s expansion, as well as con- the technical, regulatory, managerial • Telecommunications Seminar tinue to offer the latest in contemporary and economic factors at work today. • Design and Analysis of telecommunications instruction, Dr. Communication and network classes Telecommunication Systems Subramanian Raghavan was hired are taught by faculty from the • PCS System Implementation through a joint appointment with the departments of Electrical Engineering • Network Implementation in College of Business and Management. and Computer Science. Management Operating Systems Another new faculty member will also issues in the telecommunications be hired. industry are addressed in courses Students in the program have come offered by the College of Business and from companies such as Bell Atlantic, Management. Legal and regulatory Hughes Networks Systems, Computer policies are studied in courses taught Sciences Corporation, MCI, Baltimore by stellar scholar-practitioners from the Gas & Electric, and the FCC. Graduates School of Public Affairs.

University of Maryland · Department of Electrical Engineering 17 Professional Master of of a total of 362 students chose Electri- Engineering cal Engineering as their focus of study. The Professional Master of Engineering In addition, six of the 46 students who Program is a practice-oriented, part- graduated from the program last year time graduate program designed to chose Electrical Engineering as their assist engineers and scientists in the main field of study. development of their professional careers, providing them with the technical expertise needed in business, government and industrial environ- ments. Students in the program have the opportunity to upgrade and expand their knowledge in their respective disciplines and, in some cases, embark upon a new career path. During the third year of its operation, the program offered 15 areas of options or concentration, covering a broad spectrum of engineering technology that reflects faculty expertise and changing needs within the professional engineer- ing community. Interest in the program has grown markedly. Students currently in the program reside in 16 counties plus the City of Baltimore. The Electrical Engineering option of the Professional Masters in Engineering Program requires four courses from a major core area, three courses from a minor core area, and three technical electives. The major and minor core areas are selected by the student. The current core areas and courses are: Communications and Signal Processing • Probability and Stochastic Processes for Engineers • Analog and Digital Communication Systems • Data Networks • Theory and Applications of Digital Signal Processing • Wireless Communication Networks Computer Engineering • Computer System Design and Architecture • Software Design and Implementation • Microprocessor System Design • Digital VLSI Design Additional core areas will be developed as the demand arises. During the 1997-98 academic year, 64

18 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Student Honors, Awards, and Scholarships Undergraduate Students Mark Plett Department of Electrical Christopher C. Purdy Engineering Outstanding Academic The following 1997-98 graduates Hemant Shah Performance Award received significant honors: Erik Shipley Melany R. Arjona Summa Cum Laude Spring 1998 Graduates Juliean G. Requejo Massacance Kareem Aggour Kareem Aggour Institute of Electrical and Shahana Aziz Geoffrey Bloom Electronics Engineers Outstanding Julie Fredlin Edward Craft Student Award Nguyen Nguyen Stacy Fargo Shiou Sam This award is given to a member who Victoria Hao has shown outstanding commitment to Nedim Softic Giftson James Yu Wang the organization and to Electrical Caleb Kemere Engineering. Magna Cum Laude Nicholas Kohout Mehul Gandhi Erton Boci Diane Lee Nicholas Kohout Herman Lo Department of Electrical Herman Lo Thanh Xuan Luu Engineering Chair's Award Jeng Lung Kfir Meidav This award is given for outstanding Wei-Chung Wu Susanna Meinecke academic performance by a graduating Stephen Neuendorffer senior: Cum Laude Billy Ng Julie Freidlin Diane Lee Tanit Pongsiri Yu Wang Huy Nguyen Tony Quach Kevin Shaw Brian Riley Department of Electrical John Spickes Kevin Shaw Engineering Service Award Duc-Hein Tran John Spickes This award is presented to students for Kevin Woodling Truong Tran demonstrating commitment to service Graduated with EE Honors Eta Kappa Nu Outstanding Electee for their fellow students: Kareem S. Aggour Award Curtis R. By Ana Cases Christopher E. Classon This award is presented to a new Mark T. Curse Stacy L. Fargo member for outstanding performance Wen-Szu Lin Julie Freidlin in the electee program and for partici- Omar M. Sharieff Victoria Hao pation in student activities. Caleb T. Kemere Nauman Uppal Roger Chen Jeng C. Lung Kevan Lee 1997-98 George Corcoran Memorial Kfir Meidav Award Stephen Neuendorffer Eta Kappa Nu Outstanding Senior Mark L. Plett Award This award is given in recognition of Kevin E. Shaw excellence in teaching by a graduate This award is presented to a senior in student. Yu Wang Electrical Engineering for outstanding Roberto Martinez Eta Kappa Nu achievement and service to the Eta Kappa Nu Society and the department. Fall 1997 Graduates Arnold Liu Olena Aleksyenko Michael Doster David Hawk Tara Hutchings Sezin A.Omer

University of Maryland · Department of Electrical Engineering 19 Scholarships Matthew DeVillier Spotlight Jeremy M. Eckman Anderson Consulting Scholarship Ryan Enck Stephen Neuendorffer Eric M. Fiterman Bay Networks Scholarship Dvin J. Gallicchio Melany Arjona Jennifer Hathaway Julian Requejo Massacane Dennis E.Hsii Paul J. Kohout Jack I. and Dorothy G. Bender James R. LaDuca Scholarship Asher S. Lazarus Eric Dunn Jeffrey R. McIlvain Bruce Knepper Michael Miller Pictured: (from left to right) Several of the Nguyen P. Nguyen Edward L. Pearl founding members of the Harmonic Daniel Petkovsek Coalition: Mark Cursey, Omar Sharieff, Kent Boeing Scholarship Lee Reynolds Horng, Wen-Szu Lin, Curtis Bly, Nauman Renee Tolbert Andrew R. Sheahen Uppal, Johnny Pongsiri, and Ana Casas. Hughes Network Systems Andrew C. Stockham Scholarship Jeanne Sun The Harmonic Coalition Jiwanjot K. Tulsi Melany Arjona A group of 50 juniors and seniors Vincent M. Weaver Jose Goldamez formed a new student group called the Eric M. Wescott David Greer Harmonic Coalition during the spring Allen Yeh Sean Hairston of 1997. Daniel Valencia Student Organizations The student advising group, founded by Alexander Vaughn co-presidents Omar Sharieff and Wen- Knust Scholarship EE Graduate Student Szu Lin, aims at helping to facilitate the Richard Martin Association (EEGSA) Officers: adjustment of incoming undergraduate Scott Tater President, Tahereh Fazel students to the rigors of the Electrical Nauman Uppal Vice President for Academic Affairs, and Computer Engineering degree Zhiagang Bian programs, and to the atmosphere of a Litton Amecom Scholarship Vice President for Social Affairs, large university. Through one-on-one Anne Pak Raadhakrishnan Poovendran interaction, social events, and access to Secretary, Bin Ming a large pool of upperclass students, the Old Crows/Capitol Club Harmonic Coalition offers its members Kevin Shaw Eta Kappa Nu Officers 1997-98 the benefits of friendship, guidance, and Philippine Association of President, Nicholas Kohout fun. Vice President, Tanit Pongsiri Metropolitan Washington Engineers The Harmonic Coalition pairs first-year Treasurer, Brian Riley Foundation Scholarship Fund and transfer students with juniors and Recording Secretary, Joseph Chen seniors, who act as both peer advisors Marco Roxas Corresponding Secretary, Stacy Fargo and friends to the new students. Contact Pulse Electronics Scholarship IEEE Officers 1997-98 between a mentor and mentee can be as Shahana Aziz Chair, Marcellus Proctor frequent as both would like, however, Wei-Chung Wu Vice-Chairs, Anan Akundi, Michelle the group recommends that they Sciulli Scholarship Saini correspond at least weekly—whether by phone, in person, or through email. Diane Lee Treasurers, Kiatsiak Ploosawasdi, Graham Edwards The Harmonic Coalition also functions Tretter Scholarship Secretary, Sharief Youssef as a social organization, featuring Radmil Elkis football tailgates, group trips to basket- Michael Gouel Harmonic Coalition Officers, 1997-98 ball games, and other member-oriented Yu Wang events. Co-Presidents, Wen-Szu Lin and Omar EE Merit Scholarship Sharieff Kristen Behnke Treasurer, Mark Cursey Daniel A. Bendor Public Relations, Curtis Bly, Ana Casas Jonathan Black and Tanit Pongsiri Michael Cocozza Technical Consultant, Nauman Uppal Brian Detwiler

20 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Graduate Degrees Granted

Ph.D. August 1997 Coraluppi, Stefano, “Optimal Control of Ph.D. May 1998 Markov Decision Processes for Performance Dhar, Nibir, “The Mechanics of CdTe/ZnTe and Robustness.” Chao, Liang-Chiun, “A Spherical Nucleation on (112) Si for HgCdTe Infrared Thesis Advisor: Dr. S. Marcus Aberration Corrector Using Space Charge.” Photodiode Arrays.” Thesis Advisor: Dr. J. Orloff Thesis Advisor: Dr. N. Goldsman Fang, Chung-Chieh, “Sampled-Data Analysis and Control of DC-DC Switching Chen, Chung-Hsin, “Nanofabrication of Guan, Lee, “Message Routing and Problem Converters.” High Temperature Superconductor Josephson Solving in Multiprocessor Networks.” Thesis Advisor: Dr. E. Abed Junctions.” Thesis Advisor: Dr. R. Greenberg Thesis Advisor: Dr. T. Venkatesan Gregory, Jospeh A., “Characteristics and Jafarkhani, Hamid, “Wavelet Coding of Time Evolution of a Magnetized Hollow Chen, Jie, “Low-Power Architectures and Images: Adaptation, Scalability, and Cathode Glow Discharge in Air.” VLSI Design of Video Coding Systems.” Transmission over Wireless Channels.” Thesis Advisor: Dr. W. Destler Thesis Advisor: Dr. K. J. R. Liu Advisor: Dr. N. Farvardin Li, Mien, “Computer-Aided Methodology Choudhry, Zafar, “Estimating Perfor- Kanlis, Angelos, “Compression and for Analyzing IC Process and Device mance of Communications Protocols from Transmission of Multiresolution Data.” Manufacturability.” Formal Specifications.” Advisor: Dr. P. Narayan Thesis Advisor: Dr. L. Milor Thesis Advisor: Dr. V. Gligor Li, Huai, “Model-Based Image Processing Li, Pen Chung, “Effects of Nonlinear Cornwell, Donald M., “A Miniature Techniques for Breast Cancer Detection in Distortions on M-PSK DS/CDMA Systems– LIDAR Wind Profiler for the Planetary Digital Mammography.” Performance Evaluation and Design.” Boundary Layer Using Semiconductor Advisor: Dr. K. J. R. Liu Thesis Advisor: Dr. E. Geraniotis Lasers.” Peris, Vinod, “Architecture for Guaranteed Thesis Advisor: Dr. C. Davis Ligdas, Paschalis, “Transmission Power Delay Service in High Speed Network.” Control for Fading Channels with Limited Douglas, Bruce, “Figure Control of a Advisor: Dr. A. Makowski Feedback.” Flexible Astronomical Mirror.” Prather, Dennis, “Analysis and Synthesis of Thesis Advisor: Dr. N. Farvardin Thesis Advisor: Dr. W. Levine Finite Aperiodic Diffractive Optical Manikonda, Vikram, “Control and Kim, Taihyn, “Noisy Precursors for Elements using Rigorous Electromagnetic Stabilization of a Class of Nonlinear Nonlinear Systems with Application to Models.” Mechanical Systems with Symmetry.” Axial Flow Compressors.” Advisor: Dr. C. Davis Thesis Advisor: Dr. P. S. Krishnaprasad Thesis Advisor: Dr. E. Abed Roan, Gary T., “Time Domain Analysis of Rashid-Farrokhi, Farrokh, “Combined Liu, Chunbo, “Study of Electron Beam Microwave Devices by the Finite Difference Power Control Space-Time Diversity for Quality in Gyrotron Guns and Design of a Time Domain Method.” Cellular Communications.” Dual-Cavity Input Circuit for a High Advisor: Dr. K. Zaki Thesis Advisor: Dr. K. J. R. Liu Power Gyroklystron.” Sampath, Balaji, “Subspace Approaches for Thesis Advisor: Dr. T. Antonsen Stuemper, Herbert Karl, “Motion Control Blind Equalization and Identification.” for Nonholonomic Systems on Matrix Lie Liu, Shang Chieh, “New Space-Time Advisor: Dr. K. J. R. Liu Groups.” Processing Techniques for Spread-Spectrum Thesis Advisor: Dr. P. S. Krishnaprasad Wireless Networks.” Ph.D. December 1997 Thesis Advisor: Dr. E. Geraniotis Wang, Chi, “Modeling of Conductor, Chen, Po-Yueh, “VLSI Architectures for Dielectric Loaded Resonators, Filters and Phillips, William C., “SAR Image Under- Adaptive Image Compression Using Discrete Double Ridge Waveguide T-Junctions.” standing: High Speed Target Detection and Wavelet Transform.” Thesis Advisor: Dr. K. Zaki Site Model Based Exploitation.” Thesis Advisor: Dr. J. JáJá Thesis Advisor: Dr. R. Chellappa Chou, Chih-Hsien, “Traffic Analysis, Source Modeling, and Performance Evalua- tion of Multi-Media ATM Networks.” Thesis Advisor: Dr. E. Geraniotis

University of Maryland · Department of Electrical Engineering 21 Singh, Sanjeev K., “VLSI Design of Singh, Gagan D., “Reservation Based McLaughlin, Thomas F., “A Psychophysi- Functional Artificial Neural Networks Using MAC Protocol for a Wireless ATM LAN.” cal Auditory Model Applied to Perceptual Semistate Theory with a Robotics Applica- Thesis Advisor: Dr. J. Baras Audio Coding.” tion.” Thesis Advisor: Dr. S. Shamma Thesis Advisor: Dr. R. Newcomb M.S. Thesis Option, Moldoveanu, Veronica, “Case Studies in Singh, Surinder P., “Modeling Multi-Band December 1997 Computer-Aided Control System Design.” Effects of Hot-Electron Transport in Small Thesis Advisor: Dr. W. Levine Silicon Devices by a Deterministic Solution Banerjee, Amit, “Foliage-Penetrating SAR Moulin, Sophie Carine, “Convolutional of the Boltzmann Transport Equation Using Image Analysis.” Codes that Exploit the Residual Redun- Spherical Harmonics.” Thesis Advisor: Dr. R. Chellappa dancy in Multiband Harmonic Vocoders.” Thesis Advisor: Dr. I. Mayergoyz Johnson, Brian F., “A Two-Stage Thesis Advisor: Dr. T. Fuja Ulman, Robert J., “Detection Emitter Quantizaer for Coding Speech Line/ Yonce, David, “Device and Circuit Motion Using Time and Frequency Differ- Spectrum Parameters.” Optimization Using Focused Ion Beam ence of Arrival.” Thesis Advisor: Dr. N. Farvardin Doping Implants.” Thesis Advisor: Dr. E. Geraniotis Lang, Jun, “A Distributed and Time- Thesis Advisor: Dr. N. Goldsman Vusirikala, Vijayanand “Semiconductor Bounded Exception Handling Mechanism Young, Eric, “Linear Program for Lasers for Low-loss, Alignment Tolerant for Dynamically Reconfigurable Real-Time Determining the Optimal Dose Modulation Coupling to Single Mode Fibers.” Software.” to Correct Proximity Effects in Electron Thesis Advisor: Dr. M. Dagenais Thesis Advisor: Dr. D. Stewart Beam Lithography.” Wang, Weizhong, “Self-Aligned Buried Park, Vincent D., “A Highly Adaptive Thesis Advisor: Dr. M. Peckerar Implant Mextal-Oxide-Semiconductor-Field- Distributed Routing Algorithm for Mobile Effect-Transistor Facbrication.” Wireless Networks.” Thesis Advisor: Dr. J. Melngailis Thesis Advisor: Dr. L. Tassiulas M.S. Non-Thesis, August Patel, Piyush S., “DSP Applications in 1997 Communications Using Motorola’s 5600x M.S. Thesis Option, August Berkoski, Leonard Family of Digital Signal Processors.” 1997 Advisor: Dr. D. Stewart Thesis Advisor: Dr. S. Tretter Arora, Guarav, “Automated Analysis and Erfani, Shabnam Stevens, Carl C., “Experimental Evalua- Prediction of Timing Parameters in Advisor: Dr. V. Gligor tion of Gabor Decomposition in the Embedded Real-Time Systems Using Detection and Matching of Fingerprinting Floroiu, Cezar Andrei Measured Data.” Minutiae.” Advisor: Dr. V. Gligor Thesis Advisor: D. Stewart Thesis Advisor: Dr. R. Chellappa Xia, Xuyang Bei, Junyan, “Design of a Software System Tachatraiphop, Sukanya, “Diode-Pumped Advisor: Dr. C. Silio for Optimization-Based CAD.” Continuous Wave Hybrid Nd: Phosphate Thesis Advisor: Dr. A. Tits Glass and Nd: YVO Laser.” 4 M.S. Non-Thesis, December Borbath, Michael R., “Characterization of Thesis Advisor: Dr. C. Lee 1997 Crosstalk in Erbium-Doped Fiber Amplifi- ers.” M.S. Thesis Option, May Anjum, Farooq Thesis Advisor: Dr. C. Davis 1998 Advisor: Dr. L. Tassiulas Copeland, David J., “Electrical Design of Bhukhanwala, Niraj. P. a 40 Gbps WDM Laser Module.” Ercetin, Ozgur, “Information Delivery in Advisor: Dr. M. Dagenais Thesis Advisor: Dr. M. Dagenais Two-Stage Satellite-Terrestrial Wireless Networks.” Haritaoglu, Esin Michail, Anastassios, “A Distributed Thesis Advisor: Dr. L. Tassiulas Advisor: Dr. R. Chellappa Routing Algorithm for Supporting Connec- Khairy, Mohamed M. tion-Oriented Service in Wireless Commu- Fruth, Frank, “Adaptive Antenna Arrays Advisor: Dr. E. Geraniotis nication Networks with Changing Connec- for CDMA Wireless Multimedia Communi- tivity.” cation Systems.” Koley, Bikash Thesis Advisor: Dr. A. Ephremides Thesis Advisor: Dr. E. Geraniotis Advisor: Dr. M. Dagenais Ozgul, Melih, “A Facility for Designing Goyal, Anuja, “Optimization of Perovskite Taylor, Angela P. and Simulating Interconnection Network.” Manganese Oxide in Thin Films for Advisor: Dr. S. Tretter Thesis Advisor: Dr. A. Y. Oruç Uncooled Infrared Detector Applications.” Thesis Advisor: Dr. T. Venkatesan Womack, Lucas Advisor: Dr. C. Silio

22 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Xu, Jianzhong Advisor: Dr. E. Abed Yang, Shu Advisor: Dr. C. Lee Zhang, Wei Advisor: Dr. V. Gligor Zhang, Zhitao Advisor: Dr. C. Davis M.S. Non-Thesis, May 1998 Arora, Anubhav Advisor: Dr. J. Baras Chen, Bin Advisor: Dr. J. Baras Chen, Yi Advisor: Dr. A. Tits Duan, Lingze Advisor: Dr. V. Granatstein Fielding, Alexander J. Advisor: Dr. C. Davis Ge, Yanwei Advisor: Dr. A. Papamarcou Gregory, Brian P. Advisor: Dr. G. Blankenship Jiang, Yimin Advisor: Dr. J. Baras Kaiser, Faez Advisor: Dr. C. Silio Kanlis, Nikolaos Advisor: Dr. S. Shamma Ke, Jing Advisor: Dr. C. Silio Kubina, Jennifer M. Advisor: Dr. C. Davis Ma, Yuan Advisor: Dr. N. Goldsman Madhanagopal, Sunil Advisor: Dr. N. Goldsman Wang, David Advisor: Dr. K. Nakajima Xu, Yingjiu Advisor: Dr. P. S. Krishnaprasad

University of Maryland · Department of Electrical Engineering 23 Research Activities

Research Activities Overview The department’s research activities cover a broad range of areas that can be generally divided into (i) Information Sciences and Systems, and (ii) Electronic Sciences and Devices.

Information Sciences and Systems Research in this general area includes communications and signal processing, control systems and computer engineering. In communications and signal processing, the thrust of our research is in: speech, image and video processing; computer vision; VLSI signal processing; signal compression; error Pictured: Prof. Martin Reiser, in the Electron Beam Laboratory, which is also control coding; modems; spread affiliated with the Institute for Plasma Research. Research in the laboratory focuses spectrum communications; on the study of the behavior and properties of high current beams with strong space- communication networks; satellite and charge forces for advanced particle accelerator applications—such as high-energy hybrid networks; and wireless systems physics colliders, heavy ion inertial fusion, nuclear waste transmutations and energy (link and network). production, spallation neutron sources for material research, medical therapy, high- In controls, the faculty are engaged in power microwave and free electron laser generation. theoretical research on: nonlinear & stochastic models; process modeling; Electronic Sciences and The department is affiliated with several hybrid systems; adaptive & robust Devices major research units and centers within control; optimization; and geometric Research in this general area includes the university. Together, they feature methods and motion control. The electrophysics and microelectronics. more than 50 laboratories for research technologies they are researching and education. include: control prototyping; smart In the area of electrophysics, our With more than $27 million in research sensors and actuators; smart machines; activities include research on: chaos, expenditures last year, the department intelligent materials processing; and magnetics, superconductivity, is involved in extensive research power system stability and control. accelerator systems, microwave sources, plasma science, III-V optoelectronics, partnerships with industry, government In computer engineering, our major optoelectronics packaging, optical organizations, and other universities. activities are in: high performance communications; optical sensors, and This section summarizes the systems; computer architectures; WDM technologies. department’s research activities. Specific software engineering (real-time faculty members’ research interests and In microelectronics, faculty members systems); embedded systems; VLSI activities can be found in the Faculty are engaged in research projects on: (system) design; VLSI CAD Tools; Profiles Section. computer security; distributed operating device and circuit modeling; systems, and computer interconnection semiconductor materials and devices; networks. quantum effect devices; compound semiconductor devices; technology and applications of ion beams; and circuit design and testing.

24 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Affiliated Research Units

The Department of Electrical Engineering is affiliated with many Pictured: (top left) A major research units at the University of packaged smart pixel Maryland. These affiliations give faculty array, or 2-dimensional members and students access to highly laser array with a specialized, state-of-the-art computing silicon-based logic and laboratory facilities, as well as the circuit integrated with chance to engage in exciting it. The flipchip bonding collaborative and cross-disciplinary process used to integrate research projects. VCSEL (vertical cavity laser arrays) with The Department interacts closely with computer chips is also the following major research institutes depicted on the right and centers. side of the picture. The research shown here is being conducted in the Center for Automation Research Center for (CFAR) Optoelectronic Devices, Interconnections and The objective of the Center for Packaging. Automation Research is to conduct research in computer vision and robotics. The largest Laboratory in packaging, reliability testing, and Internet over hybrid networks, ATM CFAR is the Computer Vision manufacturing of optoelectronic devices hybrid networks, wireless broadband Laboratory. The Media section of the and subsystems. Industrial and networks, information distribution and Language and Media Processing government participation in the Center “push” technologies, network planning Laboratory (LAMP) is also part of is strongly encouraged. Prof. Mario and performance evaluation. The center CFAR. In addition, the Autonomous Dagenais, from the Department of has a state-of-the art research laboratory Mobile Robotics Laboratory and Electrical Engineering, is the Center on Hybrid Networking. Co-Director. Robotics Laboratory are affiliated with The center maintains several testbeds, CFAR. Focal points of research in Center for Satellite and Hybrid including one on modeling and CFAR include aerial image Communication Networks simulation of large heterogeneous understanding, automatic target (CSHCN) networks, and one on Internet over recognition, geometric processes and hybrid wireless networks. The center properties, navigation, document CSHCN, a NASA Commercial Space works closely with leading understanding, video segmentation, and Center, is sponsored by NASA, the telecommunication industry partners for autonomous robotics. Prof. Azriel Department of Defense and industry. the rapid commercialization of research Rosenfeld, an Affiliate Professor in the Established in 1991, it focuses on hybrid findings. It also maintains an intensive Departments of Computer Science and and satellite communications and industrial collaboration program, Electrical Engineering, is the Director of networking research, education and including a comprehensive internship CFAR. technology development. The program program for graduate and Center for Optoelectronic emphasizes break-through research on undergraduate students. The CSHCN Devices, Interconnections and the seamless interconnection and Director is Prof. John Baras, from the Packaging (COEDIP) interoperation of hybrid networks (i.e. Department of Electrical Engineering. heterogeneous networks consisting of COEDIP is a University of Maryland/ wireless, wireline, fiber and satellite Center for Superconductivity University of Arizona Joint NSF subnetworks). Key research areas Research (CSR) Industry/University Cooperative emphasized are: interoperability, The Center for Superconductivity Research Center conducting research in asymmetric links, network management, Research directs interdisciplinary the areas of design, fabrication, resource allocation, mobility, dynamic research in basic and applied integration, optical interconnects, routing, wireless access schemes,

University of Maryland · Department of Electrical Engineering 25 superconductivity. The faculty members Pictured: (from left associated with the Center have to right) Student appointments with the Departments of Sharon Yu, Prof. Physics, Chemistry, Electrical Julius Goldhar, and Engineering, and Materials Science. The Asst. Research Center's goals are: 1) to increase Scientist Daniel knowledge of the phenomena of Mahgerefteh, superconductivity and of working on a fibre superconducting materials; 2) to train optic experiment at the Larboratory for students needed for future Physical Sciences, a superconducting technologies; and 3) to DOD Laboratory interact with industry in the adjacent to the development of superconducting University of applications. The Director of CSR is Maryland campus. Prof. Richard L. Greene, from the Department of Physics. Engineering Research Center (ERC) particle accelerator science and Foundation Engineering Research The ERC was established to promote relativistic microwave electronics, ion Center, and is now a permanent interaction in engineering and science beam microfabrication and lithography, Institute of the University of Maryland. between the university and the business nonlinear dynamics (chaos), intense ISR supports and pursues an exciting and industrial community. The ERC laser matter interaction, and controlled variety of centers, major programs and addresses the needs of thermonuclear fusion (in both research projects. magnetically confined plasma and technology-oriented companies in ISR’s cross-disciplinary research and inertially confined plasma). The Acting Maryland and forms relationships with learning environment is unparalleled at Director of IPR is Prof. Thomas industry on a national and international other U.S. universities. The Institute’s Antonsen, from the departments of level as well. Through its innovative research teams successfully join faculty Electrical Engineering and Physics. Maryland Industrial Partnerships and students from 11 academic (MIPS) program, the ERC offers Institute for Physical Science departments with working engineers in matching funds for joint industry/ and Technology (IPST) industry and government to address the university R & D projects, carried out at larger, systems-level problems the university, that have potential to The mission of IPST is to foster associated with engineering technology. stimulate the growth of industry in excellence in both experimental and Together, they integrate control, Maryland. Other ERC programs are the theoretical research. The primary focus communications, and computation with Technology Extension Service (TES), a is on areas which are interdisciplinary in physical and process knowledge. The statewide industry assistance program; nature and which fall outside the results are better systems, the Technology Advancement Program mainstream of departmental interest. methodologies and engineering (TAP), an incubator located on the Most IPST faculty members hold joint products involving mechanical, College Park campus, for technology appointments with one of the academic electrical, material, chemical, civil and based start-up companies; and the departments, primarily Physics, aeronautical technologies. Technology Initiatives Program (TIP), Mathematics, Engineering, and which supports university facilities of Chemistry. The institute strives to ISR engages industry in every aspect of importance to industry. The Director of provide an environment in which both its research and educational programs. the ERC is Prof. Herbert Rabin, experimental and theoretical research The environment, organization, and Associate Dean for Research and can flourish. The Director of the capabilities of ISR promote research professor in the Department of institute is Distinguished University that reduces cycle times for technology Electrical Engineering. Professor James A. Yorke. development and transfer to industrial applications. Institute for Plasma Research Institute for Systems Research (IPR) (ISR) ISR’s broad range of educational programs are closely linked with its IPR is a multidisciplinary center of The Institute for Systems Research research objectives. ISR’s hands-on, excellence for basic and applied (ISR) is a global leader and innovator in cross-disciplinary learning opportunities research on the topics of charged the integrated design for control of span pre-college to postgraduate particle beams, plasmas, and nonlinear complex engineering systems. It was education. The Institute administers the dynamics. Major research areas include founded in 1985 as a National Science Master of Science in Systems

26 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Engineering program, the campus-wide Pictured: Gemstone honors program for Computerized undergraduates, and the Young Scholars motion detection. program for talented high school Figures (a-f) students. Prof. Gary W. Rubloff directs represent ISR. He holds a joint appointment with independent motion ISR and the Department of Materials detection; (a) and (b) and Nuclear Engineering. are two consecutive frames of the Laboratory for Physical detection sequence, Sciences (LPS) (c) computed flow, (d) computed depth (a) (b) LPS is a DOD Laboratory adjacent to map, (e) raw, and (f) the University of Maryland campus. cleaned regions LPS conducts collaborative research in showing independent advanced electronics materials, high motion. The research speed optical information processing, shown here and magnetic imaging, and wavelength below was conducted division multiplexed computing in the Image networks (the Lightning project) with Processing Electrical Engineering faculty. The Laboratory, which is Director of LPS is Dr. Geoffrey L. also affiliated with Burdge. the Center for Automation Microelectronics Research Research. (c) (d) Center (MRC) MRC is a newly established research center funded through a cooperative agreement with the Army Research Laboratory. The Center’s research activities focus on the following areas: nanoelectronics, optoelectronics, biological/chemical detection science, high frequency RF electronics, and ultrafast optics. The Center’s research activities are cross-disciplinary in nature and involve, in addition to Electrical (e) (f) Engineering, faculty and students from the Nuclear and Materials, Mechanical, and Chemical Engineering departments, as well as the Department of Physics. The MRC Director is Prof. William Destler, from the Department of Electrical Engineering. University of Maryland Institute for Advanced Computer Studies (UMIACS) (a) (b) The mission of the University of Maryland Institute for Advanced Pictured: Computerized obstacle detection. Figures (a) and (b) depict two consecutive Computer Studies (UMIACS) is to frames of a sequence, while figure (c) shows promote excellence in interdisciplinary the located obstacles. research in computing at the College Park campus. The Institute conducts major research programs in computer (c) vision, high performance computing, multimedia and interactive systems,

University of Maryland · Department of Electrical Engineering 27 artificial intelligence, software Pictured: (left) Student Marcel Pruessner engineering, databases, and algorithms. applies an adhesion promoter to a silicon UMIACS’ environment is enriched by a wafer, which will have resist spun on it, in strong outreach program that includes the new Integrated Circuits Fabrication close collaboration with industry and Course. The facility used in this course is government laboratories on focused housed in the Institute for Plasma Research. research projects and the organization of seminars and workshops in emerging technology areas. The UMIACS Director is Prof. Joseph JáJá from the Department of Electrical Engineering. The University of Maryland Materials Research Science and Engineering Center (MRSEC) The University of Maryland Materials Research Science and Engineering Center (MRSEC) is part of a national Pictured: (above) A 2 micrometer gate- network of materials research centers length test transistor, fabricated in the funded by the National Science Founda- Integrated Circuit Fabrication Course. tion. The MRSEC’s activities focus on three general areas: 1) materials research; 2) industrial outreach; and 3) educational outreach. MRSEC currently includes 21 faculty members, as well as research associates and assistants from five departments and three colleges at the University of Maryland. The Center’s research is focused on two areas of advanced materials technology. The first is Thin Film Metal Oxides, perfecting tech- niques for fabricating thin films of new materials with novel electrical and magnetic properties. The second is Dynamics of Surface Morphology, developing techniques to image and model the novel behavior of solid materials in extremely small structures. Pictured: A demonstration of work done by Miriam Betnun (MIT class of 2001) during In addition to its research goals, the summer of 98 as an REU student in the Intelligent Servosystems Laboratory. The MRSEC is dedicated to inspiring future idea is to show how a pair of piezo-electric benders configured to trace a Lissajous scientists and engineers to achieve figure at the distal end under periodic driving can be used to produce uni-directional scientific excellence, in a context of (i.e. rectified) rotary motion. In the experiments conducted with this motor, Miriam community service and economic studied the dependence of the ratio (output RPM)/(input frequency) on the phase accountability. Prof. Ellen D. Williams, difference between the driving sinusoids to the benders. from the Department of Physics, is the Director of MRSEC, and Prof. Ramamoorthy Ramesh of the Depart- ment of Materials Science and Engi- neering is the Associate Director. MRSEC’s web address is http:// mrsec.umd.edu.

28 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Major Research Laboratories

The following is a list of the major Pictured: A Very Large Scale research laboratories in the Department Integrated (VLSI) computer chip, of Electrical Engineering. These designed by undergraduate laboratories include significant students in the VLSI Design specialized equipment, and involve a Automation Laboratory, a teaching large number of researchers. These lab that is supplemented by several laboratories are categorized into two of the department’s research groups: (i) Information Sciences and laboratories. The chips students design in this laboartory are sent Systems, and (ii) Electronic Sciences off to be made, and then tested and Devices. For each laboratory, the when they return. This provides following information is provided: students a unique opportunity to name of the laboratory, location, not only see how their designs director, brief description of the work in theory, but to also see if laboratories purpose and goals, major they actually work. With the equipment, other participating faculty, explosive growth of the Computer affiliation with other organizations, and Engineering Degree Program, and supporting agencies/industry the construction of the new participants. Marconi Systems Technologies Computer Engineering Facility, Information Sciences and students will soon have more Systems chances to work in the areas of Communications and Signal computer architecture, microprocessor design, software Processing Laboratory engineering for real-time systems, 2454 A.V. Williams Building and embedded systems. Director: Dr. Nariman Farvardin The Communications and Signal Processing Laboratory conducts NIST, AT&T/Lucent Technologies, workstations, PC's. research on the development, analysis, Texas Instruments, Mitsubishi Electric, and simulation of (i) point-to-point and Participating Faculty: Drs. E. Abed, A. GTE Labs, IBM, Intel. multi-user communication systems, and Austin, J. Baras, P. S. Krishnaprasad, W. (ii) speech, image and video processing Levine, A. Tits, E. Zafiriou. algorithms, with an emphasis on Computer Aided Control Affiliation: EE, ISR. wireless multimedia communication. Systems Engineering Laboratory Supporting Agencies/Industry Participants: Major Equipment: A dozen Sun 2158 A.V. Williams Building NSF, AFOSR, NASA, NRL, ARI, SparcStations of various types; general Director: Dr. Raymond A. Adomaitis Advanced Micro Devices, Inc., purpose DSP boards; audio I/O and The primary goals of this laboratory are Northrop-Grumman Corp., Silvaco, storage facilities; image and video to perform research on optimization Westinghouse. processing equipment; state-of-the-art based design, software systems for software for communication system control system design, robust and Digital Signal Processing design, channel simulation, and signal nonlinear control synthesis, and systems Laboratory processing. modeling methodologies for simulation 1416 A.V. Williams Building Participating Faculty: Drs. A. and control of materials manufacturing Director: Dr. Shuvra S. Bhattacharyya Ephremides, T. Fuja, J. Gansman, E. processes and aircraft propulsion Geraniotis, R. Liu, A. Papamarcou, L. systems. Current topics of study are: The Digital Signal Processing Tassiulas, S. Tretter. RTP System Gas Phase Simulation and Laboratory is the research laboratory Model Reduction; Intelligent Materials for signal/image processing and Affiliation: EE, ISR, ERC Processing; and Turbocompression communications. Research in this Supporting Agencies/Industry Participants: System Instabilities. facility covers various important areas NSF, ARL, ONR, AFOSR, NSA, Major Equipment: Numerous Sun ranging from theoretical analysis and

University of Maryland · Department of Electrical Engineering 29 algorithm development to design and processing hardware, and distributed Pictured: A new image coding technology, implementation of signal processing object-oriented software environments called Lossy/Lossless Region-of-Interest (ROI) systems. for the systematic exploitation of 3-D Coding. The research was conducted by Mr. graphical animation and visualization. Major Equipment: One DEC Eiji Atsumi, from Mitsubishi Electric Corporation, and Prof. Nariman Farvardin, in AlphaStation, SparcStations of various Major Equipment: Computational: 8 high- the Communications and Signal Processing levels, one Video Capture and Digitizer end graphics workstations including 2 Laboratory, which is also affiliated with the Board, and various other peripheral SGI Indy-2 machines with virtual reality Institute for Systems Research. This coding devices. tools, PC's and peripherals. scheme has been proposed to the JPEG-2000 Experimental: General Electric Robot - Participating Faculty: Drs. J. Gansman, standards committee. teaching tool plus a platform for the K. J. R. Liu, and B. Papadopoulos modular dexterous hand, ISI AC-100 Affiliation: EE, ISR real-time control prototyping system Supporting Agencies/Industry Participants: with MATRIX software and a custom NSF, ONR, NIH, ARL, MIPS, Micro- interface, and networking components Star, Inc., Westinghouse, Watkins- for the study of control networks; Johnson Co., AlliedSignal, and Minta various measurement, testing and Martin Foundation. electronic assembly tools. Participating Faculty: Drs. E. Abed, D. Image Processing Laboratory Akin, M. Austin, J. Baras, W. P. 4438 A.V. Williams Building Dayawansa, S. Shamma, A. Tits, L.-W. Director: Dr. Rama Chellappa Tsai, D. Tsakiris, G. C. Walsh. In this laboratory we develop Affiliation: EE, ISR The ROI (face of the girl) is identified in the algorithms for image stabilization, Supporting Agencies/Industry Participants: middle of encoding. PSNR of the whole motion estimation, image compression, NSF, AFOSR, NASA, NRL. image: 28.77 dB; bit-rate: 0.083 bpp. and face recognition. A system is also being developed for monitoring images. Medical Informatics and Major Equipment: Several Sun Computational Intelligence SparcStations, optical tables, CCD Laboratory cameras, and linear rail for acquiring 1366 A.V. Williams Building calibrated images. Director: Dr. Nicholas DeClaris Participating Faculty: Drs. Y. Aloimonos, The laboratory conducts research at the L. S. Davis, A. Rosenfeld. leading edge of Medical Informatics Affiliation: EE, CFAR, UMIACS and Computer Engineering involving High Performance Computing and Supporting Agencies/Industry Participants: Communication Technologies and their ARPA. applications to engineering and/or medicine. Current emphasis is on Lossless reconstruction of the ROI through Intelligent Servosystems (I)Theory and Design of Intelligent and ROI coding. PSNR of the whole image: 29.35 Laboratory Knowledge-Based Systems, (ii) Cluster dB; bit-rate: 0.454 bpp. 2210 A.V. Williams Building and Machine Similarity Measures Director: Dr. P. S. Krishnaprasad Representations using Human Percep- tual Knowledge, Learning and Experi- The primary goal of this laboratory is mentation; (ii) Machine Concept to advance the state of the art in the Formation and Task Decomposition design and real-time control of with Applications to Planning and sophisticated servosystems such as Decision Making; and (iii) Machine computer controlled robotic hands, Functional Units and Architectures multi-degree of freedom robotic inspired by Brain Structures and manipulators, and flexible space Functions. Ongoing projects include: (1) structures with distributed sensors. In Integration of Intelligent Relational addition to the creation of test-beds to Database Management Systems, Expert support research in this arena, the and Fuzzy Systems, Learning Algo- Lossless reconstruction of the whole image laboratory is also engaged in the rithms and Neural Networks; (2) Theory development of specialized sensory through no ROI coding: bit-rate: 4.393 bpp.

30 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology and Design of Hierarchical Planing for Pictured: (Left) Graduate student Intelligent Systems; (3) Simulation and Babak Azimi-Sadjadi, who is Design Evaluation using Intelligent conducting research in Global System Testbeds; (4) Knowledge Based Positioning System (GPS) Aided Tools for Diagnosis, Model Building, Navigation. The GPS system is part Decision Making, Discovery and Path of the Intelligent Servosystems Laboratory, which is also affiliated Planning for Autonomous Vehicles; and with the Institute for Systems (5) Content-Based Image Characteriza- Research. (Below) GPS software tion, Storage and Retrieval. screen-shot of the coordinates for Major Equipment: Two Sun the University of Maryland. multiprocessors, ten Sun SparcStations; state-of-the-art software for designing and implementing cognitive information selection schemes, expert and database management systems, neural networks, fuzzy systems and data visualization schemes. Participating Faculty: Drs. P. Cano, S. Fritz, V. Megaloiconomou, C.L.Kauffman, R. W. Newcomb, S. Participating Faculty: Drs. J. Baras, S. four Intel-based personal computers, a Silverberg, E. Steinberger, C. Silio, B. F. Marcus, W. Levine, A. Makowski, P. S. dual-processor 68030-based VMEbus Trump, C. H. Yang and Messrs. J.W. Krishnaprasad, P. Narayan, M. Peckerar. system, embedded processor DeClaris and D. Shalvi. development environments and Affiliation: EE, ISR Affiliation: EE, UM Cancer Center, evaluation kits for the following Confocal Microscope and High Supporting Agencies/Industry Participants: processors: 8086, 80286, 80386, Performance Computing and AFSOR, Apple Computer, Inc., Hewlett 80486, V40, Z180, MC6805, MC6808, Communication Laboratories/ Packard, ONR, NIH, NSF, NRL, MC6812, MCORE, TMS320C30 and Pathology, Image Physics Laboratory/ Whitaker Foundation. TMS320C54. Embedded system Radiology, Tinnitus Center/Surgery. Software Engineering for Real- testbeds include a Puma 260 table-top robotic manipulator, computer- Supporting Agencies/Industry Participants: Time Systems (SERTS) controlled pinball machine, computer NIST, NLM, UMMS and CSC. Laboratory controlled electric trains, camera and Neural Systems Laboratory 1426 A.V. Williams Building microphone for multimedia, and a Director: Dr. David Stewart home-automation system setup. 2202 A.V. Williams Building Miscellaneous equipment includes a Director: Dr. Shihab Shamma The goal of the SERTS laboratory is to investigate new ways to design, three logic analyzers, a digitizing The Neural Systems Laboratory implement, analyze, test, and debug oscilloscope, and a set of workshop performs theoretical and experimental embedded real-time software. Research tools for building and maintaining research into the processing and projects include: component-based embedded system testbeds. recognition of complex sounds and software modelling of dynamically Affiliation: EE, UMIACS speech in the auditory system. The reconfigurable embedded systems; Web Site: http://www.ee.umd.edu/ various projects include: the automated performance monitoring and serts development of computational models analysis; real-time error detection and Supporting Agencies/Industry Participants: of neural networks for various early handling; advanced technology for real- Pulse Electronics, Telogy Networks. auditory and perceptual tasks; time operating systems; executives for physiological investigations of the non-preemptive microcontrollers and Systems Integration Laboratory functional organization of the auditory digital signal processors; a software 2250 A.V. Williams Building cortex; and the development of VLSI- framework for cooperative agents; and Director: Dr. John Baras based hardware and signal processing CASE tools to aid in reducing The Systems Engineering and software for the acquisition and analysis development time and cost of creating of multichannel sensory data. Integration Laboratory performs applications. research on systems integration and Major Equipment: Sun HP and Major Equipment: Computing hardware vertical systems engineering, MacIntosh workstations; sound record- includes 2 multiprocessor undertaking the merging of ing and generation sound booths; VLSI SPARCstations, three UltraSPARCs; sophisticated control and testing stations.

University of Maryland · Department of Electrical Engineering 31 communication systems methodologies, Electron Beam Physics such as: large-scale optimization; Laboratory nonlinear and stochastic estimation and 0204A Energy Research Building control; algebraic and differential Director: Dr. Martin Reiser geometric methods; scheduling, with computer-science methodologies from The purpose and goals of this laboratory database management, search and are to study the behavior and properties planning algorithms; symbolic of high current beams with strong space- computation; object-oriented charge forces for advanced particle programming; and massively parallel Pictured: A binaural head mounted on a accelerator applications, such as high- architectures. Research on the modeling robotic vehicle. The head, created as part of energy physics colliders, heavy ion of complex systems investigates the Learning and Intelligent Systems inertial fusion, nuclear waste hierarchical modeling at different levels Learning Binaurally-Directed Movement transmutations and energy production, of detail, linking the physical modeling project, senses sound and moves towards it. spallation neutron sources for material layer to the abstract layer, model-based The goal of the research project is to research, medical therapy, high-power automation and sensing, and on-line investigate time coding in the central nervous microwave and free electron laser model construction with controlled system—specifically, the auditory system of generation. The beam physics topics complexity. Major on-going projects the barn owl, and mimic the system in a investigated so far include: multi- include network management, network robotic testbed. This research spans several beamlet merging; emittance growth and modeling and performance evaluation, laboratories, including the Intelligent halo formation due to mismatching or speech recognition, image recognition, Servosystems, Neural Systems and Carr off-centering; longitudinal compression telemedicine systems engineering, laboratories at Maryland, and the Takahashi of rectangular and parabolic beam satellite constellations systems Laboratory at the University of Oregon. One bunches; longitudinal energy spread of potential application for this research engineering, integrated product and beams from thermionic sources; space- includes video conferencing with “smart” process design, middleware systems, charge waves and instabilities; and camera motion. The vehicle shown was built intelligent control architectures, design relaxation processes towards thermal during a summer school project at Telluride, of intelligent materials, Internet Colorado, by a team led by Prof. Shihab equilibrium. modifications and advanced techniques, Shamma. A new major research project, aimed at network traffic modeling and the study of space-charge dominated monitoring, learning systems. beams in a circular system, has been Participating Faculty: Drs. M. Austin, S. biological tissues, and medical approved and funded this year by the Corson, J. Hendler, A. Makowski, S. applications of microwaves. The open- Department of Energy. The Marcus, P. Narayan. probe technique is being used to study experimental facility, called “Electron the dielectric properties of animal tissue Ring,” has a circumference of about 11 Affiliation: EE, ISR to provide data for theoretical models meters and will be built during the next Supporting Agencies/Industry Participants: of electromagnetic energy deposition in two years. It represents a novel and NSF, AT&T, Lockheed Martin Tele- the human head during the use of a unique research tool for studying the communications, Motorola, IBM, cellular phone. beam physics in a ring configuration. Hewlett Packard, Mil3, Lockheed Major Equipment: HP model 8510 Future experiments will provide Martin Corp., Boeing, Texas Instru- Network Analyzer, HP workstation, important, currently unavailable data for ments, Hughes Network Systems, PC, temperature-controlled bath, a theoretical modeling of space-charge Northrop Grumman, Semiconductor range of microwave and coaxial dominated beams in such systems and Research Corporation, NSF, AFOSR, components, microwave signal for benchmarking computer simulation ONR, ARO, NASA, NRL, NIST, NIH. generators, S-band power generators. codes being used or developed in various laboratories. Participating Faculty: Drs. C. C. Davis Major Equipment: Electronic Sciences and and E. C. Elson (Walter Reed Army solenoid transport Devices Institue of Research). facility, resistive-wall instability facility, two electron guns producing 5-10 kV, Affiliation: EE 50-200 mA electron beams, various fast Bioelectromagnetics Laboratory Supporting Agencies/Industry Participants: scopes, computer and data acquisition 2352 A.V. Williams Building ONR, Wireless Technology Research systems; new E-Ring facility under Director: Dr. Leonard S. Taylor Inc. construction (see above). Research in the Bioelectromagnetics Participating Faculty: Dr. J. G. Wang. Laboratory includes studies of the Affiliation: EE, IPR dielectric properties of biomaterials,

32 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Supporting Agencies/Industry Participants: The aim is to understand processes that DOE, FM Technologies, Inc. will lead to the generation of microwave pulses with energy in the 1- Gyroklystron Laboratory 10 kJ range. The work is of special interest to the Department of Defense 0204E Energy Research Building for the advanced concepts in electronic Directors: Drs. Wesley Lawson and countermeasures. Victor Granatstein. Major Equipment: Dragon pulse-line The main focus of this laboratory is the accelerator (single shot, 100 ns pulse development of high-power microwave duration, 1 MV, 140 kA); line-type, gyro-amplifiers. In the course of this high power modulator (650 kV, 800 A, main goal we also do developmental 10 microsec. pulses with 350 kW work related to high-power microwave average power); pulsed 15 kG solenoid; components, such as electron guns, fast oscilloscopes; digitized data mode transducers, tapered waveguides, acquisition system. beam and microwave diagnostics, etc. The application of such RF sources is as Participating Faculty: Drs. Y. Carmel, T. drivers for linear electron colliders. In Antonsen, Jr., G. Nusinovich, W. the past year we have set record peak Destler, A. Shkvarunets, and Mr. J. power levels for conventional amplifiers Rodgers. with microsecond length pulses with a Affiliation: EE, IPR 3-cavity coaxial system that produced Supporting Agencies/Industry Participants: about 80 MW at 8.6 GHz. Pictured: The pinball machine Comet AFOSR, AF Phillips Lab., ARL. Major Equipment: 2 Hz, 500 kV, 800 A, Commander, created from scratch by students as part of a one-year, multidisciplinary design 1 microsec. modulator; hydrogen Intense Laser-Matter furnace; various microwave hardware, project sponsored by Lockheed Martin. The sources, test and measurement project director for the project was Dr. David Interactions Laboratory hardware. B. Stewart. B0223, B0259 Computer and Space Sciences Building Participating Faculty: Drs. M. Reiser, X. Director: Dr. Howard Milchberg Xu, G. Nusinovich Major Equipment: 60 kV, 10 A, 1-10 microsec. soft-tube modulator; water The interaction of intense laser pulses Affiliation: EE, IPR cooled, 7 kG solenoid magnet with 8" with matter is of great interest for Supporting Agencies/Industry Participants: bore, magnet power supplies, 17 GHz practical applications and basic research DOE, Stanford Linear Accelerator and 34 GHz microwave components, studies. The Intense Laser-Matter Center. gyrotrons, magnetron injection guns. Interaction Laboratory develops and Participating Faculty: Drs. H. Guo, M. uses state-of-the-art laser systems that Harmonic Gyrotron Research Walter, G. Nusinovich, T. Antonsen, Jr. can produce ultrashort, ultra-intense Laboratory pulses, up to 2x1018 watts/cm2. One Affiliation: EE, IPR activity using these pulses is the 0221 Energy Research Building production of intense, ultrashort x-ray Director: Dr. Victor Granatstein Supporting Agencies/Industry Participants: AFOSR, AF Phillips Lab., NRL. pulses from laser-solid interaction for This laboratory studies the time-resolved material diagnostics. amplification of moderate power, High Power Microwave Another project is plasma fiber-optic millimeter-waves via the mechanism of Generation Laboratory guiding of relativistically intense laser coherent cyclotron radiation at pulses over long distances. This has harmonics of the electron cyclotron 0296 Energy Research Building application to the development of frequency. The work may lead to the Director: Dr. Victor Granatstein compact, tabletop 1 GeV electron development of more powerful This laboratory studies the generation accelerators, and sources of coherent amplifiers than are currently available of high power microwave pulses using short wavelength radiation—such as x- in the frequency range near 95 GHz. intense, relativistic, electron beams. ray lasers and very high order Harmonic operation reduces the Present studies concentrate on frequency conversion. required magnetic field and may allow relativistic backward wave oscillators Major Laser Equipment: 10Hz and one to avoid the use of superconducting both under vacuum and plasma-filled 1000Hz Ti:Sapphire based chirped- magnets. Potential applications include conditions. Microwave pulse-shortening pulse amplification laser systems (sub advanced radar and communication is a phenomenon of special interest. 100 fs pulses); 10 Hz Nd:YAG based systems.

University of Maryland · Department of Electrical Engineering 33 regenerative amplifier/power amplifier for programmed high resolution system (100 ps pulses); synchronously implantation; b) a 300 keV ion pumped dye oscillator/multi-stage implanter; c) ultra high vacuum system amplifier system (subpicosecond for gas field ionization source pulses). development; d) optical bench for electrostatic lens development e) Participating Faculty: Dr. T. Antonsen lithography and microfabrication Affiliation: EE, IPST equipment including: e-beam Supporting Agencies/Industry Participants: evaporator, reactive ion etcher, atomic NSF, AFOSR, NIST, DOE. force microscope, very high resolution scanning electron microscope with Laboratory for Atomic, EDAX, LMIS fabrication equipment, Molecular, and Optical Science contact exposure system, and rapid thermal anneale and Engineering Participating Faculty: Drs. W. Destler, N. Computer and Space Sciences Building Goldsman, T. Venkatesan, S. Guharay, (Entire Lower Level) Pictured: A near-field scanning optical A. Iliadis, John T. Moore (Chem.) J. Director: Dr. John Weiner microscope examining a gold grating. The Bernstein, (Mat. Sci.) and R. Ramesh fibre tip is mounted onto a quartz crystal Atomic, molecular, and optical science (Mat. Sci.) tuning fork. Beneath the sample is a piezo (AMO) is a fertile area of research tube, which is used for distance control and Affiliation: EE, IPR activity covering a broad domain of two-dimensional scanning. light-matter interactions. Faculty Supporting Agencies/Industry Participants: DOD/NSA, NSF, Navy, Intel and FEI members from the departments of Milchberg, F. Skiff, and J. Weiner. Physics, Chemistry, Engineering (EE), Company. the Institute of Physical Science and Supporting Agencies/Industry Participants: Technology (IPST), and the Institute of Instituto de Física de São Carlos, Center Laser Sensor Laboratories Plasma Research (IPR) have organized for Ultrafast Optical Science at the University of Michigan, Centre de 2316, 2320 A.V. Williams Building themselves into LAMOSE, to provide a Director: Dr. Christopher Davis focal point for research and education Physique Moleculaire Optique et in these multidisciplinary endeavors. Hertzienne at the University of Research in the laser sensor laboratories LAMOSE is the natural home for Bordeaux, NIST. covers a broad range of topics in the faculty and students at all levels whose areas of fiber and free-space laser formal training may be in the traditional Laboratory for Ion Beam interferometry. Coherent, hybrid science or engineering disciplines but Research and Applications homodyne and heterodyne fiber sensors have been studied that can be used for whose research pursuits lead them into 0202 Energy Research Building remote measurement of electrical and basic and applied AMO science. Directors: Drs. John Melngailis and Jon magnetic fields, for mapping the Orloff The laboratory has three principle birefringence patterns in GaAs and objectives: graduate research in AMO The work of the laboratory is centered related electronic and photonic devices. science and engineering; graduate and on the generation of ion beams and Near-field scanning optical microscopy undergraduate education; and their application to microfabrication. is being used in a new interferometric partnership with industry, national The program of research includes: new reflection mode to provide phase and laboratories, and other university application of high resolution focused amplitude contrast in imaging of centers. ion beams (FIB's) for electronic devices semiconductor, dielectric, and Major Equipment: Coherent Ti:sapphire and for material science; high brightness biological samples with resolution on femtosecond laser oscillator and gas field ion sources for these systems; the order of 50 nm. Direct-write regenerative aplifier, optical parametirc ion beam induced chemical reactions; lithography in the ultraviolet aplifier; single frequency ring lasers, and projects in support of ion projection wavelength using tapered optical fibers coherent picosecond dye lasers, 10 Hz lithography for full chip exposure. is being used for novel device and 10 mj, 200 fs dye laser, 10 Hz 200 mj, Major Equipment: a) Four focused ion structure modification and 80 fs Ti:sapphire laser system, 1 Khz 1 beam (FIB) systems: a 50 keV system characterization. mj, 100 fs Ti:sapphire laser system, 40 for beam induced chemistry, a 30 keV Major Equipment: 2 CW CO2 lasers, Ghz HP sampling oscilloscope. FIB/SEM system for high resolution several diode-pumped Nd:YAG and Participating Faculty: Drs. J. Goldhar, P.- milling and disposition, a 50 keV high He-Ne lasers, pulsed Nd:YAG laser, five T. Ho, C. H. Lee, T. J. Mellrath, H. M. resolution system for milling, etching, vibration isolated optical tables, Fabry- and deposition, and a 150 keV system

34 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Perot and various homodyne and Major Equipment: microwave furnace (4' heterodyne fiber interferometers, near- x 2' dia. with changeable gaseous field scanning optical microscope, near- atmosphere); 3 kW average power, 2.45 field direct-write lithography system, GHz magnetron source; 1 kW average several optical microscopes, Sutter power 28 GHz klystron source; 1200 C micropipette, Ericsson fusion splicer, furnace (3" dia. x 23" long); microwave anechoic chamber, various micro- and vector network analyzer (1.5-20 GHz). nano-positioning assemblies and Participating Faculty: Drs. T. Antonsen, alignment instruments, numerous signal Jr., V. Granatstein, I. Lloyd. and spectrum analyzers, lock-in amplifiers, signal generators, Sun Affiliation: EE, IPR, Materials and SparcStation, HP workstations and PCs. Nuclear Engineering Participating Faculty: Drs. W. Atia, D. L. Supporting Agencies/Industry Participants: Mazzoni, S. Pilevar, I. I. Smolyaninov. DOE, ARO, NATO, CPI (formerly Varian Microwave Power Tube Affiliation: EE Division). Supporting Agencies/Industry Participants: NSA, ONR, NSF, ARL, Wireless Nanoelectronics Research Technology Research Inc., FDA, State Laboratory of Maryland. Pictured: A scanning tunneling microscope, made in the Nanoelectronics Laboratory by 1322, 2358, 2364, 1316 A.V. Williams Prof. Chia-Hung Yang’s research group. This Magnetic and Semiconductor Bldg. type of microscope resolves down to the Director: Dr. Chia-Hung Yang Simulation Laboratory atomic level, enabling Yang’s group to probe The Nanoelectronics Research 2348 A.V. Williams Building the quantum nature of devices at the Laboratory consists of five facilities in Director: Dr. Issak Mayergoyz nanometer scale. the department. The focus of this In this laboratory we perform studies on research laboratory is to investigate the hysteresis and viscosity modeling as Major Equipment: Sun workstations; electronic properties of nanometer-scale well as modeling and simulation of Automatic Network Analyzer, 500 devices, with an emphasis on transistors semiconductor devices. MHz-18 GHz; Spectrum Analyzer. for VLSI applications. The building block of today’s VLSI circuits is the Major Equipment: Vibrating Sample Affiliation: EE transistor, and by downscaling the Magnetometer with temperature control Supporting Agencies/Industry Participants: transistor’s lateral dimension we can chambers and various computers. Sandia National Lab., Antenna increase the complexity and Affiliation: EE, LPS Specialist Co., Scientific Microwave functionality of integrated circuits. Such Inc., K&L Microwave Inc. Supporting Agencies/Industry Participants: scaling approach has a physical limit of DOE, NSA, ARL and Intel. approximately 0.1 micrometers: when Microwave Sintering Research transistors are less than 0.1 micrometers Microwave Research Laboratory Laboratory in size they stop working as three- terminal switches. Our goal is to invent 0145 Energy Research Building 2344 A.V. Williams Building and apply new transistors that can be Director: Dr. Yuval Carmel Director: Dr. Kawthar Zaki much smaller. Recently, two structures In this laboratory accurate modeling This laboratory studies the sintering of based on quantum mechanical techniques are developed for complex ceramics at a multiple of microwave tunneling have been invented and microwave transmission and resonant frequencies either applied individually reported by Prof. Yang’s group. or simultaneously. The aim is to structures. These models are used in the A variety of equipment and methods understand and optimize the microwave development of miniaturized high are employed: The first facility features sintering process by using acoustic wave quality microwave filters and a Molecular Beam Epitaxy (MBE) and microwave diagnostics. Eventually, multiplexers. We also develop very system, for research in the area of ceramic materials with greatly improved accurate measurement techniques for quantum transistors. MBE machines mechanical properties may result. determining the dielectric constant and allow for the growth of heterojunctions Potential applications include ceramic, loss tangent of bulk and substrate with precise control over one atomic internal combustion engines operating materials. Modeling and layer, and layers (each nanometers in at high temperatures, and improved characterization of dielectric resonators thickness) can produce strong quantum efficiency compared with metal engines. is performed for use in superconducting effects in electron transport even at cavities in ultra low noise oscillators. room temperature. The system will be

University of Maryland · Department of Electrical Engineering 35 used specifically for the growth of Pictured: a Fiber Optic device-quality silicon, germanium, and EFPI Magnetic Field silicides on silicon. Sensor, used to measure small The second facility contains a new magnetic fields. Such electron-beam lithography system, devices could be used which consists of a scanning electron in geological microscope and a computer-controlled applications such as electron-beam steering system. By using the detection of the a tightly-focused electron beam to earth’s magnetic field directly expose an electron-sensitive perturbations. The resist, a fine pattern nanometers in sensor is being dimension can be defined on the resist. developed in the Laser The pattern can later be transferred to Sensor Laboratories, by the sample by other clean room graduate student processes for manufacturing useful Rafael Rojas. devices. The third facility is for electrical Supporting Agencies/Industry Participants: Supporting Agencies/Industry Participants: characterization. We use LPS/NSA and Arpa. NASA, NSA, AFOSR, NSF, Hewlett- Packard, Micracor, New Focus, TRW, Magnetotransport cryostats with Participating Faculty: P. T. Ho, and Chris Coherent, Uniphase, COMSAT, superconducting magnets to Davis. characterize electronic devices at 0.3K Fermionics, AMP, United Technologies. < T < 300K. Both analog and digital Photonic Switching and Photonics Laboratory data acquisition systems are available. Integrated Optoelectronics The fourth facility features optical Laboratory 4456 A.V. Williams Building characterization systems, including an Director: Dr. Ping-Tong Ho 1155, 1203, 1205 Engineering argon ion laser; an ion laser-pumped Laboratory Building The various projects examined in this dye laser; a 100 W carbon dioxide laser Director: Dr. Mario Dagenais laboratory include: (1) Laser Ranger— (infrared); a single-pass 0.8 meter Spex using a laser to measure distance; (2) spectrometer; a continuous-flow liquid Research in this laboratory spans a wide design and fabrication of optical helium cryostat; and a PC-controlled range of topics in the field of integrated standards; (3) design and fabrication of photon counting detector. optoelectronics, including: optical spatial light modulators; and (4) semiconductor lasers and amplifiers; The last facility utilizes scanning design and fabrication of optical integrated receivers; optoelectronic tunneling microscopes to characterize channel dropping filters. interconnects and packaging; nanometer-scale electronic devices. We wavelength conversion devices; optical Major Equipment: Nitrogen Laser/ perform scanning tunneling microscopy bistability; semiconductor laser amplifier system; a microelectronics on nanostructures at variable reliability studies and laser theory and inspection/measurement station; temperatures, with 0.1 angstrom spatial modeling; and implementation of a thermal evaporator; workstation and resolution. WDM network to study distributed PC; standard optical equipment; Major Equipment: EPI molecular beam shared memory computing. microwave signal source and epitaxy, Omicron UHV scanning measurement equipment; high-voltage Major Equipment: Anritsu Bit-Error-Rate tunneling microscope, JEOL 40keV equipment. Tester, HP electronic and optical scanning electron microscope, Coherent spectrum analyzer, e-beam evaporator, Affiliation: EE argon laser, Coherent dye laser, spectrometer, signal generator, power Kinetics CO2 laser, Spex spectrometer, Supporting Agencies/Industry Participants: supplies, Coherent Ar ion laser, Janis continuous flow cryostat, Automated Precision, Inc., NSF, DoD. Coherent Ti:Sapphire laser, optical and magnetoresistance system with electronic equipment for magnetic field strength up to 9 tesla and characterization of semiconductor lasers 0.3K < T < 300K, automated current- and amplifiers, optical fibers, voltage characterization system computers. (HP4142B), gain phase/impedance analyzer from 100Hz to 40MHz, SUN Participating Faculty: Dr. Y. J. Chen Sparcstations and PCs. (UMBC). Affiliation: EE Affiliation: EE, UMIACS

36 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Semiconductor Device, Materials Pictured: A photograph of a three micron and Circuits Simulation wide (about 66 times smaller than the Laboratory average human hair) waveguide modulator, taken using a scanning electron microscope, 2333 A.V. Williams Building which is capable of magnifying the image Co-Directors: Drs. Jeffrey Frey and Neil 50,000 times. Such devices are important for Goldsman increasing the performance of the internet, where the quest for ever higher data transfer Projects include the development of rates necesitates the need to modulate a light advanced CAD tools for the design and signal billions of times a second. The small detailed analysis of VLSI-scale silicon size is essential, since these modulators must and other semiconductor devices, be coupled directly to fiber optic lines—the materials and circuits used in backbone of the internet—which themselves communications and computing. are only ten microns across. This research is Major Equipment: 6 workstations, a PC, being conducted in the Photonic Switching and various associated equipment. and Integrated Optoelectronics Laboratory Participating Faculty: Dr. Isaak Mayergoyz Supporting Agencies/Industry Participants: station; diode pumped CW mode- Affiliation: EE NRL, DARPA, NSF, ONR, Rockwell/ locked Nd:YLF oscillator and Supporting Agencies/Industry Participants: Boeing, Army regenerative amplifier system; Coherent DEC, LSI Logic, Intel, SRC Industry Antares CW mode-locked Nd:YLF Consortium, NSF, LPS, MRL, ARL, Ultrafast Optoelectronics lasers; Spectra-Physics Argon Ion Laser. NRL, NSA Laboratory Participating Faculty: Dr. W.-L. Cao, Dr. 4448, 4452 A.V. Williams Building E. Funk and Dr. K. J. Lee Thin Films and Device Director: Dr. Chi H. Lee Applications Laboratory Affiliation: EE, LPS, ARL, LAMOSE The following is a list of the topics Center for Superconductivity Research, Supporting Agencies/Industry Participants: studied in this laboratory: (1) on-wafer NSA, ARL, ONR, COMSAT, Cree Physics Department, NSF, MRSEC on sampling of high speed and high Oxide Thin Films, Surfaces and Probes Research, Germanium Power Devices frequency electronic devices and Corp., DuPont. Director: Dr. T. Venkatesan circuits; (2) ultrafast electronics using The following projects being high temperature superconductor investigated include: (1) pulsed laser photoresistive switches; (3) ultra- deposition of multi-component oxide wideband radiation for radar and films; (2) low temperature transport wireless communications; (4) pulse measurements; (3) surface analysis by power; (5) high power ultrafast X-ray diffraction and Rutherford semiconductor lasers; (6) micro-wave backscattering analysis; (4) multi- photonics; (7) diode pumped hybrid component Oxides and Nitrides, for lasers for ultrashort pulse generation; (8) high Temperature Superconductivity, terahertz radiation; and (9) soliton Magnetism and wide bandgap propagation and interaction in optical semiconductors. fiber. Major Equipment: 2 Excimer Lasers; 8 Major Equipment: Femtosecond Pulsed Laser Thin Film Deposition Ti:Sapphire laser, regenerative amplifier Systems; 6 transport measurement and optical parametric amplifier in systems; Accelerator (1-7 Mev) Tandem; LAMOSE lab;CW mode-locked RBS system; X-ray Diffractometers; Nd:glass system including oscillator, Atomic Force Microscope, spectro- two stage regenerative amplifier; photometer, ion milling station, wire terahertz radiation experimental setup; bonder and high field magnets, optoelectronic based ultra-wideband photoluminiscence measurement wireless communications system; facility. optoelectronic sampling system; femto- second streak camera; high speed Affiliation: EE, Physics oscilloscopes; various ultrafast semiconductor lasers; laser wafer probe

University of Maryland · Department of Electrical Engineering 37 Contracts and Grants

During 1997-98, total grants in force Fig. 12. Research Expenditures History which Electrical Engineering faculty were Principal Investigators for amounted to $128,913,349. Actual research expenditures for 1997-98 were as follows: Federal Government $20,914,049 Business and Industry $3,488,674 State of Maryland $3,042,716 Millions of Dollars Total $27,445,439 Of this total, $10,136,883 was administered by the Department of Electrical Engineering, $8,080,823 was significant research activity are listed Materials; DoD-funded Laboratory for administered by the Institute for below. Ion Beam Research and Applications; Systems Research, $5,230,302 was DoD-funded High Power Microwave administered by the Institute for Plasma • Information Sciences and Sources; NSF industry-funded Industry/ Research, $391,325 was administered Systems: NASA Center for Satellite University Cooperative Research by the Institute for Physical Science and and Hybrid Communications; DoD Center in Optoelectronic Devices, Technology, $155,666 was administered funded initiative in automated vision/ Interconnects and Packaging; and the by the Center for Superconductivity, sending; two Army Research Army Research Laboratory and $3,450,440 was administered by Laboratory Federated Labs in Advanced Microelectronics Research Center. the University of Maryland Institute for Communications and Information Advanced Computer Studies. Distribution and in Advanced Sensors; Figure 12 summarizes the history of the DoD-funded Nonlinear Active Control Department’s research expenditures In total, 51 of our full-time faculty were of Dynamical Systems; DoD-funded over the past eight years. engaged in sponsored research during Advanced Acoustics and Auditory the 1997-98 academic year. Figure 13 shows the 1997-98 Research Processing Center; and DoD-funded Expenditures by source. Tthe history of A significant portion of the research Design and Control of Smart Structures. research expenditures by source is grants obtained by faculty was in the • Electronic Sciences and Devices: summarized in Fig. 14. form of major block grants, involving DoE-funded Accelerator Research several faculty members and focusing Program; NSA-funded Supercomputer An itemized list of the current contracts on cross-disciplinary research. Some of Optical Interconnects; NSA-funded and grants in force is provided in the the block grants representing areas of Joint Program for Advanced Electronic pages that follow.

Fig. 13. Annual Research Expenditures by Fig. 14. Annual Research Expenditures by Source Source Millions of Dollars

38 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Contracts and Grants

Note: Contacts and grants with multiple principal investigators are repeated under each principal investigator’s name. Project Title Funding Source Amount Abed, Eyad Active Stall Control Multistage Compression Systems AFOSR $309,484 Nonlinear Active Control of Dynamical Systems VPI $700,000 Antonsen, Thomas Advanced Vacuum Electronic Microwave Devices NRL $680,616 Application of Plasma Waveguides to Advanced High Energy DOE $108,400 Basic Studies of High Power Millimeter Wave Amplifiers and Associated Technology NRL $350,000 Maryland Controlled Fusion Research Program DOE $1,626,568 Microwave Generation for Magnetic Fusion Energy Applications Task A DOE $352,000 Microwave Generation for Magnetic Fusion Energy Applications Task B DOE $352,000 Research on Compact, High-Engery, Microwave Sources Air Force $3,611,271 Ultra-Intense Laser Pulse Propagation of Gas and Plasma NSF $134,000 Baras, John Advanced Telecommunications/Information Distribution Lockheed Sanders $3,157,686 Center for Satellite & Hybrid Communications Networks NASA $1,283,000 Commercial Satellite Systems for High Data Rate NASA $350,000 Cortical Representation of Acoustics Spectra NSF $99,873 Design of Bi-lateral, Satellite Optimized, TCP/IP Lockheed $124,825 Efficient Network Data Storage & Retrieval for Integrated Network Management Lockheed $59,264 Integrated Product & Process Design Automation Tool MIPS/Westinghouse $155,532 Network Resources Management for Mobile ATM Boeing $50,000 Theoretical Foundations and Tools for Concurrent Eng. for Run-to-Run Ctrl. in Semicond. Mfg. SRC $102,000 Terrestrial Wireless Extensions of Direct Broadcast MIPS/Hughes $214, 082 Wireless and Hybrid Networks Laboratory ONR $200,377 Bhattacharyya, Shuvra Software Synthesis for Real-time Signal Processing NSF $200,000 Blankenship, Gilmer Fault Detection in Bearings MIPS/Beth Steel $160,119 Optimal Management of Sensor System MIPS/Atl. Aerospace $76,931 Chellappa. Rama Advanced Automatic Target Recognition AIR FORCE $91,000 Advanced Sensors Studies Lockheed/Sanders $1,041,520 Appearance-Based Vision for Complex Environments DARPA $104,040 Classification of Non Cooperating Targets Using Multiscale Stochastic Models AIR FORCE $104,000 Context-Based Temporal Reasoning & Analysis of Vehicule Activities from SAREO Imagery DARPA $600,000 Model-Based Recognition of Targets in Foliage-Pentrating SAR Images ARMY $140,138 Model Supported Positioning of Synthetic Aperture Radar ARMY $104,040 Dagenais, Mario The Alliance of WDM Laser Array Application AIR FORCE $2,380,494 Antireflection Coating of High CW Power 1.5-1.6 µm Eye Diode Lasers Sensors Unlimited $20,000 Center for Optoelectronic Devices, Interconnects, and Packaging NSF $520,000 Design and Fabrication of Semiconductor Microactivities IMRA CORP. $25,000 Distributed Shared Memory Computing Using an Optical Backbone NSA $5,215,579 Fiber Optic Lens for Antenna Arrays MIPS/Xenotran $36,867 Flip Chip Bonding of Optoelectronic Circuits & Modules Digital Optics Corp. $12,500 High Power Optical Laser Switch AlliedSignal $25,000 Joint Program for Advanced Electronic Materials NSA $937,453

University of Maryland · Department of Electrical Engineering 39 Contracts and Grants

Project Title Funding Source Amount MOSAIC Optoelectronic Packaging TRW $79,634 Optoelectronic Packaging of VCSEL Arrays VIXEL $25,000 Semiconductor Manufacturing NIST $9,100 Spectral Processing on Wavelength Encoded Signals in Semiconductor Laser AMPS AIR FORCE $196,579 Davis, Christopher Advanced Fiber Optic Sensors and Free Space Optical Data NSA $399,343 Analysis of Optically-Pumped Lasers, Solid State Lasers BATTELLE $22,500 Fiber Optic Biosensors CAB, INC. $19,000 Gemstone Program: An Interdisciplinary Undergraduate Program NSF $103,937 Gene Expression Following 60 Hz EMF Exposure STMD/UMAB $16,181 Instrumentation for Ultrahigh Resolution Temporal and Spatial Studies ARMY $88,000 Molecular Effects of ELF Fields with Harmonic Content STMD/UMAB $6,237 Novel Studies of Surface Plasmons and their Applications US Civil. Res. Fd. $12,000 DeClaris, Nicholas Exploratory Research on Machine Reasoning for Concept NIST $82,784 Destler, William Advanced Vacuum Electronic Microwave Devices NRL $680,616 Center of Excellence for Ion Beam Research and Applications NSA $969,124 Center for Strategic Man-Made Materials GSA $31,416 Research on Compact, High-Energy, Microwave Sources AIR FORCE $3,611,271 Gemstone Program: An Interdisciplinary Undergraduate Program NSF $103,937 High Indium Low Cost FET Materials for MMJCs Lockheed Martin $35,000 Hybrid Plasma Microwave Tubes for High Technology Applications NATO $30,900 Increased Optical Cross Section Using CQWS Lockheed Sanders $109,738 MAFET Quasi-Optic Monolithic Amplifiers Lockheed $139,047 Microelectronics Research Collaborative Program ARL $9,196,712 Microwave Generation for Magnetic Fusion Energy Applications- Task A DOE $352,000 Microwave Generation for Magnetic Fusion Energy Applications- Task B DOE $352,000 Polarization Sensitive QWIP Thermal Imager Digital $58,851 Research in Lasers and Beams NRL $1,112,342 Two-Color Material and Detector Development Lockheed Sanders $84,976 Ephremides, Anthony Advanced Telecommunications/Information Distribution Lockheed/Sanders $3,157,686 Algorithms for Optimization of Cellular Networks GTE $20,000 Center for Satellite & Hybrid Communication Networks NASA $1,283,000 Digital Wireless Reliability Study MIPS/Tektron $56,300 Performance Trade-Offs in All-Wireless Networks NAVY $40,000 Farvardin, Nariman Advanced Telecommunications/Information Distribution Lockheed/Sanders $3,157,686 Channel Coding Problems Associated with the Transmission NSF $325,214 Fast, High Performance Still Image Compression Intel $150,327 Fiber Optic Communications NSA $248,779 Indoor Wireless Project NSF $399,986 Prototype Software Development for Telemedicine BIRCH/DAVIS $10,697 Research in Optics & Optoelectronics NSA $105,000 Research Internships in Telecommunications Engineering NSF $136,920 Research Support Contract NSA $96,234 Specialized Optical Sources for Advanced Fiber Optic Communications NSA $1,506,165 Fuja, Thomas Error Correction R & D Applicable to Vocoders NSA $100,000 Intergovernmental Personnel Agreement NSF $131,637

40 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Contracts and Grants Project Title Funding Source Amount Young Scholars Program NSF $104,494 Geraniotis, Evaggelos Center fot Satellite & Hybrid Communication Networks NASA $1,283,000 Non-Gaussian Multi-Sensor Signal Processing & Exploitation of Wideband Signals NAVY $215,527 DS/CDMA for High Data Rate SATCOM Naval Communication NAVY $120,000 Modulation and Coding Techniques for Atmospheric & Underwater Communication NAVY $616,085 Collaborative Research on Feasibilty Study Telesystems $30,000 Design and Evaluation of 3rd Generation Wireless DS/CDMA Systems Hughes $30,000 Power Control in a High Speed Wireless Network Architecture for Indoor Portable Communications Phillips $40,000 Gligor, Virgil Certificate Management Infrastructure-Certificate Revocation STMD $168,500 Goldhar, Julius Research in Lasers and Beams NRL $1,112,342 Technology & Techniques for Optical Communications NSA $2,111,185 Laser System for Research in Atomic, Molecular and Optical Sci. and Eng. NSF $553,267 Goldsman, Neil Collaborative Research Between UMD and TCAD LSI Corp $30,000 Devices and Circuits by Focused Ion Beam Implementation Tech. Dev. NSA $500,000 Semiconductor Device Modeling NSF $344,721 Focused Ion Beam Implanted Transistors for Integrated NSA $247,437 Gomez, Romel Giant Magnetoresistance of Multilayer Films NIST $167,920 Preparation and Investigations of Giant Magnetoresistance Effect Sensors NIST $75,313 Evaluation of the Effects of Vapor Phase Corrosion NAVY $18,496 Atomic Microscopy and Surface Science NSA $149,921 Dev. of Ultra-High Volume Magnetic Force Microscope & Magnetic Force Scanning Tunneling Microscope ARMY $80,000 Magnetic Disk Remanence NSA $1,169,998 X-Ray Diffraction Invest. of Magnetic Multilayers Exhibiting the Giant Magnetoresistance Effect NIST $99,784 Granatstein, Victor 1998 Advanced Accelerator Concepts Workshop DOE $80,000 Accelerator Research Study- Task C DOE $3,710,000 Advanced Vacuum Electronic Microwave Devices NRL $680,616 Basic Studies of High Power Millimeter Wave Amplifiers and Associated Technology NRL $350,000 High Resolution Diagnostics for High Power Microwave Generation Research AIR FORCE $323,000 Indoor Wireless Project NSF $399,986 Microwave Generation for Magnetic Fusion Energy Applications- Task A DOE $354,000 Microwave Generation for Magnetic Fusion Energy Applications- Task B DOE $352,000 Optical Fiber Based Muzzle Reference System MIPS/RSI Corp. $55,000 Research in Lasers and Beams NRL $1,112,342 Research on Compact, High-Energy, Microwave Sources AIR FORCE $3,611,271 Studies of Plasma Loaded Backward Wave Oscillators AIR FORCE $173,550 Ho, Ping-Tong Joint Program for Advanced Electronic Materials NSA $86,193 Laser System for Research in Atomic, Molecular and Optical Science and Engineering NSF $553,267 Low Cost Industrial Laser Ranger MIPS/Auto Pres $104,908 Nanometric Fabrication for Near Field Microscopy Standards NIST $21,089

University of Maryland · Department of Electrical Engineering 41 Contracts and Grants

Project Title Funding Source Amount Optical Dropping Filters NSA $250,000 Iliadis, Agis Development of Light Emitting Devices in Wide Band Gap Metal Oxide/Nitride Systems NSF $62,237 Development of Si Light Emitting Devices for Enabling Optical Interconnect Technology NSF $150,000 Development of CMOS Compatible Si Light Emitters for Optical Interconnect Tech. NSA $173,426 Ja?Ja?, Joseph Acquisition of an ATM Network NSF $390,276 Advanced Ctr. For Global Remote Sensing Studies NASA $430,000 Connecting the Univ. of Maryland to vBNS NSF $350,000 Designing Practical Parallel Algorithms for Computing and Image Processing NSF $181,899 High Performance Computing for Remote Sensing Application NSF $46,200 NPAIC - San Diego NPAIC $66,500 Performance & Mgmt. Of Distributed Heterogeneous Networks NSA $944,382 Krishnaprasad, P. S. Learning Binaurally Directed Movement NSF $775,000 Mathematics of Controllable Physical Structures Harvard $527,350 Supplement to ERC in Systems Research NSF $550,000 Lawson, Wes Accelerator Research Study- Task C DOE $3,710,000 Advanced Vacuum Electronic Microwave Devices NRL $680,616 Basic Studies of High Power Millimeter Wave Amplifiers and Associated Tech. NRL $350,000 Research Internships in Telecommunications Engineering NSF $136,920 Lee, Chi Dev. of Ultra-High Volume Magnetic Force Microscope & Magnetic Force Scanning Tunneling Microscope ARMY $80,000 High Resistivity Photoconductive InGaAiAs Photodetector NSA $390,000 Invest. and Ctrl. of Photo-Chemical Dynamics Using Specially Modulated Ultrafast Laser Pulses NAVY $48,032 Joint Program for Advanced Electronic Materials NSA $5,324,950 Laser System for Research in Atomic, Molecular and Optical Science and Engineering NSF $553,267 Optical Controlled HTS Switches for Telecommunication Dupont $37,969 Short Pulse Communications Research NSA $200,000 Levine, William Further Development Support and Enhancement NASA $120,013 Model Based Interpolation of Ultrasound Scans of the Tongue UMAB $81,748 Liu, K. J. Ray Algorithm-Based Architectural Low-Power Design Method NAVY $289,726 Multimedia Video on Demand Microstar $112,031 Novel Approaches For Modern Signal Processing NAVY $94,480 Novel Approaches for Numerical Signal Processing NSF $99,985 Optimization of Multi-Dimensional NMR Data NIH $300,077 Young Investigator Award-High Performance Computing NSF $212,500 Makowsi, Armand Center for Satellite & Hybrid Communication Networks NASA $1,283,000 Marcus, Steven Institute for Systems Research NSF $4,237,187 Integrated Hierarchical Life Cycle Approach to the Design and Operation of a Semiconductor Fabrication Factory NSF $267,000 Integrated Hierarchical Life Cycle Approach to Design SRC $133,000

42 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Contracts and Grants

Project Title Funding Source Amount Learning Binaurally Directed Movement NSF $775,000 Semiconductor Device Modeling NSF $344,721 Mayergoyz, Isaak Atomic Microscopy and Surface Science NSA $779,641 Magnetic Disk Remanence NSA $1,169,998 Mathematical Models of Hysteresis DOE $312,160 Melngailis, John Collaborative Work on Dev. of Processes for Creating Ultra-high Speed Integrated Circuit Tech. NRL $28,000 Devices and Circuits by Focused Ion Beam Implementation Technology Development NSA $500,000 Focused Ion Beam Implanted Transistors for Integrated Circuits NSA $247,437 US/Japan Joint Seminar: Formation of Ion Nanobeams and Application to Material Processing NSF $20,690 Miilchberg, Howard Application of Plasma Waveguides to Advanced High Energy DOE $108,400 Laser System for Research in Atomic, Molecular and Optical Science and Engineering NSF $553,267 Ultra-Intense Laser Pulse Propagation of Gas and Plasma NSF $134,000 Milor, Linda Statistical Modeling Methodology for Submicron MOS Devices and Circuits NSF $145,000 Nakajima, Kazuo Advanced Thin Ionization Calorimeter Balloon Experiment NAVY $30,518 Narayan, Prakash Center for Satellite & Hybrid Communication Networks NASA $1,283,000 Newcomb, Robert Devices and Circuits by Focused Ion Beam Implementation Technology Development NSA $500,000 Orloff, Jon Dev. of a Cs Electrohydrodynamic Ion Source for High Spatial Resolutions Secondary Ion Mass Spectrometery NSF $159,692 Devices and Circuits by Focused Ion Beam Implementation Technology Development NSA $500,000 US/Japan Joint Seminar: Formation of Ion Nanobeams and Application to Material Processing NSF $20,690 Oruc, Yavuz High Speed Nonblocking Switching Networks NSF $277,700 Ott, Edward Chaos Theory Applied to Communication NSF $24,630 Chaotic Dynamics of Physical Systems ONR $378,000 Fractal Structure of Fluid Vorticity and Blowout Bifurcations ONR $82,039 Maryland Controlled Fusion Research Program DOE $1,626,568 Research in Lasers and Beams NRL $1,112,342 Papamarcou, Adrian Indoor Wireless Project NSF $399,986 Research Internships in Telecommunications Engineering NSF $136,920 Peckerar, Martin Devices and Circuits by Focused Ion Beam Implementation Tech. Dev. NSA $500,000 Ramaswamy. Alba Lalitha Development of Aerial Vehicle Microprocessor Control NAVY $17,260 Engineering Studies/Support on Flexible Linear Shaped Charges NAVY $48,396 Study & Optimization of Laser Initiated Detonators NAVY $49,084 Study of "Ammonium Dinitramide" (A D N) Utilized in Propellants NAVY $95,280 The Continuation of Eng. Studies/Support on Laser, Elect. Detonators and Explosive Devices NAVY $49,897

University of Maryland · Department of Electrical Engineering 43 Contracts and Grants

Project Title Funding Source Amount Reiser, Martin Accelerator Research Study- Task C DOE $3,710,000 Accelerator Research Study- Task A DOE $2,092,584 Studies of Longitudinal Instability with an Electron Beam DOE $865,399 Rosenfeld, Azriel Advanced Sensors Studies Lockheed/Sanders $1,041,520 Apperance-Based Vision for Complex Environments DARPA $104,040 Context-Based Temporal Reasoning & Analysis of Vehicule Activities from SAREO Imagery DARPA $600,000 Shamma, Shihab Annual Telluride Workshop on Neuromorphic Engineering ONR $10,000 Center for Auditory and Acoustics Research ONR $1,829,058 Cotrical Representation of Acoustic Spectra NSF $99,873 Learning Binaurally Directed Movement NSF $775,000 Math Models for Process & Recognition ONR $667,246 Shayman, Mark Research Experiences for Undergraduates NSF $102,500 Supervisory Control Design for Nondeterministic System NSF $150,000 Tassiulas, Leandros Algorithms for Optimization of Cellular Networks GTE $20,000 Efficient Wireless Access and Mobility Support AIR FORCE $63,062 Hand-over Diversity Analysis of the ICO Satellite Network Hughes $42,522 Indoor Wireless Project NSF $399,986 Localized Congestion Control Strategies for Network-Wide Performance Guarantees NSF $198,403 Mobile Network Architectures & Protocols for Reliable Info. Transport in Dynamic Environ. ONR $160,000 Network Resources Management for Mobile ATM Boeing $50,000 Power Control, Hand Off & Coverage Studies in a High Speed Wireless Network Architecture for Indoor Portable Comm. Phillips $40,000 Research Problems in Wireless Communication Systems AIR FORCE $129,129 Wireless Access Control for Optimal Spectral Efficiency NSF $140,000 Wireless and Hybrid Networks Laboratory ONR $200,377 Tits, Andre Optimization Techniques for Problems Arising in Design and Other Eng. Applications NSF $273,331 Tretter, Steven MIPS/Digital Communication Functions for DSP Technics $38,894 Indoor Wireless Project NSF $399,986 Venkatesan, Thirumalai Spin Polarized Quasiparticle Injection into High Temperature Superconductors Navy $187,665 Resonant Quantum Excitation in Oxide Superconductors Navy $95,000 Vishkin, Uzi Parallel Algorithmics-Some Current Changes NSF $218,951 Yang, Chia-Hung Fabrication of Hetero-Channel Silicon MOSFETs with 10nm Channel Length ARMY $251,634 Joint Program for Advanced Electronic Materials NSA $657,175 Modulated Tunneling Transistor NSA $201,419 Zaki, Kawthar Commercial Waveguide Filters MIPS/K&L $67,000 Development of Low Cost Millimeter Wave Multiplexers MIPS/K&L $80,000 Dual Mode Cavity Filters MIPS/K&L $67,011

44 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Faculty Profiles

Eyad H. Abed Committee. ISR: Chair, Outreach Professional Service Committee. College of Engineering 2nd IEEE International Workshop on Professor, Council. Factory Communication Systems Ph.D., University of Recent Publications Program Committee; CISE Research California, Berkeley. Infrastructure Site Visit for NSF, E. H. Abed, “Instability Precursors and NSF Presidential University of Pennsylvania. Bifurcation Control of Multistage Young Investigator; Compression Systems,” 1997 AFOSR University Service Joint Appointment Workshop on Dynamics and Control, pp. 1- IT Advisory Board (MAITI); Chair, with ISR. 3, Dayton, May 1997. Intellectual Property Rights Committee; Research Interests Search Committee for Campus CIO. Ashok K. Agrawala Dr. Abed’s research interests are in Recent Publications nonlinear systems and control, with A. Agrawala, A. Cilingiroglu and S. emphasis on control techniques aimed Affiliate Professor, Ph.D., Harvard. Lee, “Real Time Communication,” The at modifying nonlinear dynamical Froehlich/Kent Encyclopedia of Telecommu- behavior. Applications of the work IEEE Fellow; Joint Appointment with the nications, Marcel Dekker, Inc., vol. 15, under study include electric power pp. 35-84, 1998. systems and aeroengine compression Department of systems. Computer Science and J. Pointek, F. Shull, R. Tesoriero and A. UMIACS. Agrawala, “NetDyn Revisisted: A Research problems under investigation Replicated Study of Network Dynam- Research Interests include: the control of bifurcations ics,” Computer Networks and ISDN leading to oscillations and chaos; the Dr. Ashok K. Agrawala is a Professor of Systems, Elsevier Science, vol. 29, pp. detection of nearness to instability using Computer Science and Electrical 831-840, 1997. real-time monitoring techniques; the Engineering at the University of determination of the degree of partici- Maryland. For the past twenty years he S. Choi, L. Shi and A. Agrawala, pation of system variables in system has been actively involved in research “Intelligent Temporal Control,” modes; and the control of resonance in various aspects of computer systems IASTED Intl. Conf. on Intelligent Informa- phenomena. Power system applications design, implementation and perfor- tion Systems, the Bahamas, December being considered include: the use of mance. 1997. network control devices to mitigate Dr. Agrawala’s research the last few A. Agrawala, S. Lee, “Cyclone Technol- instabilities in power networks; the years has been to understand the role of ogy: An Overview,” University of analytical study of the subsynchronous time in the design and implementation Maryland Computer Science Technical resonance phenomenon; and the of computer systems. He has been Report, CS-TR 3873, February 1998. monitoring of power networks for working on the design problems for nearness to instability. He is also A. Agrawala, K. Kailas and B. Trinh, hard real-time systems, and has devel- investigating stability conditions for “Accuracy and Modern High Perfor- oped the MARUTI system. The goal of power electronic networks. In another mance Processors: A Case Study Using the MARUTI project is to create an project, he is studying the monitoring Pentium Pro,” University of Maryland environment for the development and and control of stall inception in Computer Science Technical Report, vol. deployment of applications with hard aeroengine compression systems. CS-TR, p. 3820, August 1997. real-time, fault tolerance, and security Professional Service requirements. S. Choi, L. Shi and A. Agrawala, Ed. Advisory Board, Nonlinear Dynamics; “Designing Dynamic Temporal Controls He has also developed a new network- for Critical Systems,” University of Intl. Program Committee, Control of ing technology—Cyclone. The novel Oscillations and Chaos. Maryland Computer Science Technical feature of this technology is that all Report, vol. CS-TR, p. 3804, May 1997. University Service management is done in resource/time S. Choi and A. Agrawala, “Scheduling Electrical Engineering: Graduate space, resulting in a network flow with Aperiodic and Sporadic Tasks in Hard Studies and Research Committee; end-to-end performance guarantees with Real-Time Systems,” University of General Academic Affairs Committee; low latencies. Maryland Computer Science Technical Salary Committee; Faculty Search

University of Maryland · Department of Electrical Engineering 45 Report, vol. CS-TR, p. 3794, May 1997. This work is relevant to the understand- Field Generated by a Short Laser Pulse ing of the turbulent mixing that arises in in and Underdense Plasma,” Phys. S. Choi and A. Agrawala, “Dynamic a number of natural and laboratory Plasmas, vol. 4, p. 4358, 1997. Dispatching of Cyclic Real-Time Task situations. with Relative Constraints,” University of S. P. Nikitin, T. M. Antonsen, Jr., T. R. Maryland Computer Science Technical Professional Service Clark, Y. Li, and H. M. Milchberg, Report, vol. CS-TR p. 3770, March 1997. Divisional Assoc. Ed.: Phys. Rev. Lett.; “Guiding of Intense Femtosecond Pulses in Preformed Channels,” Optics K. K. Kailas and A. Agrawala, “An IEEE Standing Technical Committee on Lett., vol. 22, p. 1787, 1997. Accurate Time-management Unit for Plasma Science and Applications Real-time Processors,” University of Executive Committee. E. Ott, T. M. Antonsen, Jr., and J. Maryland Computer Science Technical University Service Jacobs, “Fractal Patterns of Tracers Report, vol. CS-TR, p. 3768, March 1997. Physics: Priorities Committee; Depart- Advected by Smooth Temporally ment Council; Undergraduate Educa- Irregular Fluid Flows and their Analysis Thomas M. Antonsen, Jr. tion. Electrical Engineering: Chair, by Use of Random Maps,” Fractals, vol. Facilities Services and Computers; 5, p. 119, 1997. Professor, Institute for Plasma Research: Executive C. Reyl, T. M. Antonsen, Jr., and E. Ott, Ph.D., Cornell Committee; Ad Hoc Appointment “Vorticity Generation by Instabilities of University. Committee. IPR: IPR Review Commit- Chaotic Fluid Flows,” Physica, vol. D American Physical tee. 111, p. 202, 1998. Society Fellow; Joint Recent Publications Appointment with C. Reyl, T. M. Antonsen, Jr., and E. Ott, Physics. R. A. Correa, B. Levush, and T. M. “Scaling Properties of a Magnetic Antonsen, Jr., “High Efficiency Cavity Dynamo Wavenumber Power Spectrum Research Interests Design of a 170 GHz Gyrotron for Generated by Langrangian Chaotic Professor Antonsen's general research Fusion Applications,” Phys. Plasma, vol. Flows,” Phys. Plasmas, vol. 5, p. 151, interests are the development of high 4, p. 209, 1997. 1998. power sources of microwave radiation, P. Mora and T. M. Antonsen, Jr., plasma physics, and nonlinear dynam- “Kinetic Modeling of Intense Short John S. Baras ics. Work in the area of high power Laser Pulses Propagating in Tenuous sources of coherent radiation concen- Plasma,” Phys. Plasma, vol. 4, p. 217, Professor, trates on the theoretical understanding 1997. Ph.D., Harvard of the nonlinear dynamics of mode University. competition in high power sources of J. R. Marques, F. Dorchies, P. Audebert, IEEE Fellow; coherent radiation such as free electron J. P. Geindre, F. Amiranoff, J. C. Permanent Lockheed lasers, gyrotrons, and relativistic Gauthier, G. Hammoniaux , A. Martin Chair in backward wave oscillators. Professor Antonetti, P. Chessa, P. Mora, and T. M. Systems Engineering; Antonsen is also involved with the Antonsen, Jr., “Frequency Increase and Joint Appointment with development of numerical simulation Damping of Non-linear Electron Plasma ISR. tools, which are used in the design of Oscillations in Cylindrical Symmetry,” Research Interests high power microwave sources. Phys. Rev. Lett., vol. 78, p. 3463, 1997. Dr. Baras’ research interests are in the The recent development of intense, S. C. Venkataramani, T. M. Antonsen, areas of intelligent control systems, real- ultra-short pulse lasers has opened up Jr., and E., “Levy Flights in Fluid Flows time signal processing and understand- new areas of research in laser plasma with no KAM Surfaces,” Phys. Rev. Lett., ing, hybrid communication networks, interactions. Professor Antonsen has vol. 78, p. 3864, 1997. and virtual manufacturing systems. concentrated on the self focusing and C. Reyl, T. M. Antonsen, Jr., and E. Ott, In his most recent work on control stability of short laser pulses propagat- “Nature of the Vorticity Field Generated systems, he has obtained several ing in tenuous plasmas. This work is by Instabilities of Chaotic Fluid Flows,” significant and pioneering results for conducted in close collaboration with Phys. Rev. Lett., vol. 78, p. 2259, 1997. the construction of real-time, robust, the experimental efforts of Professor output feedback controllers. He is Milchberg, also of this department. J. Jacobs, E. Ott, T. M. Antonsen, Jr., and J. Yorke, “Modeling Fractal Entrain- pursuing a long-term program in the A third area of interest concerns ment Sets of Tracers Advected by foundations of intelligent control multifractal properties of fluid flow. Chaotic Temporally Irregular Fluid systems, including new concepts of Efforts here concentrate on characteriz- Flows,” Physica, vol. D110, p.1, 1997. computability and learning. He is ing the properties of passive scalars (and continuing the development of intelli- L. M. Gorbunov, P. Mora, and T. M. vectors), which are transported by fluid gent manufacturing systems for smart Antonsen, Jr., “Quasiastatic Magnetic flows that exhibit Lagrangian chaos. materials and microelectronics. In

46 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology particular, he has developed intelligent ment Commission and DBED Board on 3096-3104, December 1997. systems for process planning to mini- Telecommunications Industry; Mary- J. S. Baras and N. S. Patel, “Nonlinear mize cost and maximize quality in the land Economic Development Commis- H8 Control with Delayed Measure- manufacturing of hybrid electrome- sion and DBED Board on Information ments,” Proc. 4th European Control Conf. chanical devices. He has also initiated Technology Industry. (ECC'97), pp. TU-E H5 (509), Brussels, studies for the design of hybrid architec- University Service Belgium, July 1997. tures for intelligent control systems by ISR: Executive Committee; APT combining neural networks, fuzzy logic J. S. Baras, M. S. Corson, K. Doan, K. Committee; Director, Center for chips, and DSP chips. Jang, M. Li, A. Mishra, and H. Xie, Satellite and Hybrid Communications “Tactical and Strategic Communication In his recent work in signal processing, Networks. Maryland Applied Informa- Network Simulation and Performance he has obtained new mathematical tion Technology Initiative (MAITI); Analysis,” Proc. of the ATIRP: Advanced results on the design of systems that University Committee on the Review of Telecommunications/Information Distribu- combine data classification and com- Intellectual Property Right Policies; tion Research Pgm., vol. 1, pp. 343-347, pression, including constrained optimi- Leader. UMCP ATIRP Consortium University of Maryland, College Park, zation of tree functionals, adaptive effort; Consortium Management MD, January 1997. vector quantization, learning clustering Committee. algorithms, and decision trees. He has J. S. Baras and S. I. Wolk, “Wavelet- Recent Publications developed new multi-resolution Based Hierarchical Organization of J. S. Baras and N. Patel, “Robust methods for image modeling and Image Data: Applications to ISAR and Control of Semiconductor Manufactur- processing, including weak continuity Face Recognition,” Proc. of the Conf. on ing Processes,” AMS-SIAM Summer methods, stochastic morphology, and Information Sci. and Sys., The Johns Seminar on Mathematics of Stochastic wavelet representations. He has also Hopkins University, Baltimore, MD, Manufacturing Systems, The American developed new, record-breaking March 1997. Mathematical Society, Lectures in Applied algorithms for speech compression, text Mathematics, vol. 33, pp. 37-54, 1997. J. S. Baras, M. Ball, S. Gupta, P. free speaker identification, and re- Viswanathan and P. Shah, “Automated stricted grammar speech recognition. J. S. Baras, “Infinite Dimensional Network Fault Management,” Proc. of the Systems, Hardy Function Algebras, the He continues his studies on hybrid MILCOM '97, vol. 3, pp. 1244-1250, Corona Theorem and Complexity,” communication networks (integrated Monterey, CA, November 1997. Operators, Systems and Linear Algebra: satellite and terrestrial networks) Three Decades of Algebraic Systems Theory: J. S. Baras, M. Ball, N. Roussopoulos, simulation and management. He has In Honor of Professor Paul Fuhrmann, K. Jang, K. Stathatos, and J. Valluri, developed the foundations for the use of Kaiserslautern, Germany, September “Integrated Management of Large new object-oriented data models and 1997. Satellite-Terrestrial Networks,” Proc. of object-oriented databases in network the MILCOM '97, vol. 1, pp. 383-387, management with emphasis in configu- J. S. Baras and M. R. James “Robust and Monterey, CA, November 1997. ration management and fault manage- Risk-Sensitive Output Feedback Control ment. He also completed an award for Finite State Machines and Hidden J. S. Baras, S. Corson, S. winning invention (Hybrid Internet Markov Models,” J. of Mathematical Sys., Papademetriou, I. Secka and N. Access) on the development of inexpen- Estimation, and Control, vol. 7, no. 3, pp. Suphasindhu, “Fast Asymmetric sive, PC based, hybrid communication 371-374, 1997. Internet Over Wireless Satellite- networks. He is currently studying Terrestrial Networks,” Proc. of the J. S. Baras and N. Patel, “Robust extensions of ATM to wireless and MILCOM '97, vol. 1, pp. 372-377, Control of Set-Valued Discrete Time satellite networks. Monterey, CA, November 1997. Dynamical Systems, IEEE Trans. on Professional Service Automatic Control, vol. 43, no. 1, pp. 61- J. S. Baras, M. S. Corson, K. Jang, M. Assoc. Ed., IMA Journal of Mathematical 75, January 1998. Li, A. Misra, and H. Xie, “Hierarchical, Layered Modeling and Performance Control and Information; Editorial J. S. Baras and N. Patel, “A Framework Boards: SARA, Systems & Control: Evaluation of Hybrid Communication for Robust Run by Run Control with Networks,” Proc. of the MILCOM '97, vol. Foundations & Applications, Mathematics Lot Delayed Measurements,” IEEE of Systems and Control. Internet Engineer- 3, pp. 1313-1371, Monterey, CA, Trans. on Semiconductor Manufacturing, November 1997. ing Task Force Working Groups; ATM Vol, 10, no. 1, pp. 75-83, 1997. Forum and of the Satellite Industry Task R. Haridasan and J. S. Baras, “A Force; Expert Reviewer, Swedish Board N. D. Sidiropoulos, J. S. Baras and C. Convex Model for the Robust Estima- of Industrial Research (NUTEK) of A. Berenstein, "Weak Continuity with tion of Optical Flow for Motion-Based Industry-University Centers of Excel- Structural Constraints,” IEEE Trans. on Image Segementation,” Proc. of the 1997 lence; Maryland Economic Develop- Signal Processing, vol. 45, no. 12, pp. Intl. Conf. on Image Processing (ICIP'97),

University of Maryland · Department of Electrical Engineering 47 Santa Barbara, CA, October-November, '97, vol. 2, pp. 998-1002, Monterey, CA, Joseph B. Bernstein 1997. November 1997. AffiliateAssistant B. Frankpitt and J. S. Baras, “Estimation M. Karir, V. Bharadwaj, K. Holleman, Professor, of Hidden Markov Models for Partially S. Papademetriou, N. Suphasindhu, and Ph.D., Observed Risk Sensitive Control J. S. Baras, “Extensions of DBS and Massachussettes Problems,” Proc. of the 5th IEEE Mediter- Hybrid Internet,” Proc. of the 2nd ACM Institute of ranean Conf. on Control and Sys., Cyprus, Intl. Workshop on Satellite-Based Informa- Technology. Greece, July 1997. tion Services (WOSBIS), pp. 67-74, Joint Appointment Budapest, Hungary, October 1997. B. Frankpitt and J. S. Baras, “Combined with the Materials Estimation and Control of HMMs.” J. S. Baras, “Hybrid Communication and Nuclear Engineering Department. Proc. of the IEEE Conf. on Decision and Networks for Video and Broadband Control, San Diego, CA, December Data Services,” invited plenary address, Research Interests 1997. Proc. 2nd IEEE Symposium on Computers Dr. Bernstein specializes in reliability of and Communications, pp. 22, Alexandria, microelectronic devices. His courses R. K. Karne, J. S. Baras, M. O. Ball, S. Egypt, July 1997. emphasize fundamental physical Bashyam, A. Kebede, J. Williams, V. S. mechanism associated with failures in Trichur, M. Karir, H. T. Lai and S. V. J. S. Baras, “Linking Satellites with electronic and mechanical systems. He Dandekar, “Integrated Product and Terrestrial Networks for Digital Connec- heads the degree program in microelec- Process Design Environment Tool for tivity,” invited plenary address, Satellite tronics reliability and is actively Manufacturing T/R Modules,” Proc. of Networks: Architectures, Applications and involved in several areas of Microelec- ETFA'97: 6th IEEE Intl. Conf. on Technologies Workshop, NASA Lewis tronics Reliability research including Emerging Technologies and Factory Automa- Research Center, Cleveland, Ohio, June gate oxide integrity, time-dependent tion, UCLA, Los Angeles, CA, Septem- 1998. dielectric breakdown of ultra-thin ber 1997. J. S. Baras and S. I. Wolk, “Wavelet- oxide, metalization reliability, and bulk K. Stathatos, N. Roussopoulos and J. S. Based Hierarchical Organization of thermal-mechanical-electrical effects on Baras, “Adaptive Data Broadcast in Large Image Databases: ISAR and Face the reliability of silicon power devices. Hybrid Networks,” Proc. 23rd Intl. Conf. Recognition,” Proc. SPIE 12th Intl. His largest program is in developing on Very Large Databases, pp. 326-335, Symposium on Aerospace, Defense Sensing, methods to modify electronic circuitry Athens, Greece, August 1997. Simulation and Control, Orlando, Florida, by laser connections and disconnections April 13-17, 1998. at the wafer level. These techniques are A. Teolis and J. S. Baras, “Identification applicable to wafer scale integration of Noisy FM Signals Using R. Haridasan and J. S. Baras, “Accurate and multi-chip module schemes, as well Nonorthogonal Wavelet Transforms,” Segmentation and Estimation of as laser programmable gate arrays. His Proc. SPIE 11th Annual Intl. Symposium Parametric Motion Fields for Object- research programs include applications on Aerospace/Defense Sensing, Simulation Based Video Coding Using Mean Field of Focussed Ion Beams (FIB) for and Controls, Orlando, Florida, April Theory,” Proc. of SPIE 10th Annual analysis of laser-metal-dielectric 1997. Symposium on Visual Communications and interactions. Image Processing 1998 (VICP '98), vol. J. S. Baras, and I. Secka, “High Perfor- 3309, pp. 361-369 San Jose, CA, Programs are sponsored by NIST, mance IP Multicasting Over Wireless January 1998. NSA, JPL, ONR, and industry. Dr. Satellite-Terrestrial Networks,” Proc. 17th Bernstein supervises a laboratory for AIAA Intl. Communications Satellite R. Poovendran, S. Ahmed, S. Corson, laser processing of microelectronic Systems Conf. and Exhibit, February 1998. and J. S. Baras, “A Scalable Extension of devices and works with the Institute for Group Key Management Protocol,” R. Karne, J. S. Baras, M. Ball, S. Plasma Research. He has written a book Proc. of ARL Federated Laboratory 2nd Bahyam, A. Kebed, J. Williams, V. chapter on laser formed metallic Annual Conf., University of Maryland, Trichur, M. Karir, H. Lai, S. Dandekar, connections that will be published in College Park, Maryland, February 1998. “Integrated Product and Process Design the LIA Handbook of Laser Materials Environment Tool for Manufacturing M. Y. Liu, J. S. Baras and A. Misra, Processing and co-taught a short course T/R Modules,” Proc. Intl. Assoc. of “Performance Evaluation IN Multi- on focussed ion-beam applications for Management 15th Annual Intl. Conf., Rate, Multi-Hop Communication microanalysis. Dr. Bernstein also works Montreal, Canada, August 1997. Networks with Adaptive Routing,” Proc. closely with the two major manufactur- of ARL Federated Laboratory 2nd Annual ers of laser processing equipment and H. Xie and J. S. Baras, “Performance Conf., University of Maryland, College with a start-up company who has Analysis of PNNI Routing in ATM Park, Maryland, February 1998. licensed his patents for commercial Networks: Hierarchical Reduced Load development. He has also lectured at Approximation,” Proc. of the MILCOM

48 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Cal Tech, Jet Propulsion Laboratory on Clara, CA, May, 1998. E. A. Lee, “Joint Minimization of Code the Fundamentals of Reliability Physics and Data for Synchronous Dataflow Y. Chen, J. S. Suehle, B. Shen, J. B. and Statistics as part of a NASA Programs,” J. of Formal Methods in System Bernstein, C. Messick, “A New Tech- Summer Fellowship Award. Design, vol. 11, no. 1, pp. 41–70, July nique to Extract TDDB Acceleration 1997. Professional Service Parameters from Fast Qbd Tests,” Proc. Intl. Reliability Physics Symposium of Intl. Integrated Reliability Workshop, S. S. S. Bhattacharyya, P. K. Murthy, and technical program committee and Lake Tahoe, CA, October, 1997. E. A. Lee, “Optimized Software Synthe- registration committee; SPIE Conf. sis for Synchronous Dataflow,” Proc. Session Chair, Microelectronics Manu- Shuvra S. Bhattacharyya Intl. Conf. on Application Specific Sys., facturing, IEEE Electron Devices and Architectures, and Processors, July 1997. Reliability Society. Assistant Professor, Ph.D., University of Gilmer L. Blankenship University Service California at Berkeley. Graduate Admissions Chair, Reliability NSF Career Award; Professor and Associate Program; Microelectronics Reliability Joint Appointment Chair for External Coordinator; Letters and Sciences with UMIACS. Affairs, Undergraduate Advisor. Ph.D, Massachusetts Recent Publications Institute of Technology. Research Interests J. B. Bernstein, Y. Hua and W. Zhang, IEEE Fellow. Dr. Bhattacharyya’s research interests “Laser Energy Limitation for Buried center around the areas of computer- Metal Cuts,” IEEE Electr. Dev. Let., vol. aided design for embedded systems, and Research Interests 19, no. 1, January 1998. VLSI signal processing. Specific areas Dr. Blankenship’s research interests are M. Pecht, J. B. Bernstein, D. Searls, M. of current emphasis include memory in the development and application of Peckerar, P. Karulkar, “Korea's Focus management for signal, image and control theory. He is especially inter- on Market Doninance,” Semiconductor video processing algorithms; analysis ested in the development of software Intl., January, 1998 and optimization of interprocessor tools for the application of nonlinear J. B. Bernstein, “Laser Programmable communication overhead in embedded and optimal control methods to practi- Interconnections Between Metal Lines,” multiprocessors; uniprocessor and cal problems. His recent work includes Military and Aerospace Applications of multiprocessor scheduling algorithms the development of new models and Programmable Devices and Technologies that effectively balance performance, methods for the suppression of acoustic Conf., NASA (GSFC), September 1998 power consumption, and cost based on radiation and mechanical vibration. He the specific requirements of an applica- is also working on the application of B. Stark, J. B. Bernstein, R. Lawton and tion; the application of evolutionary “intelligent” control systems to certain G. Swift, “The Effects of Radiation on algorithms to software and hardware classes of problems involving diagnostic the Resonant Frequency of a Polysilicon synthesis; dataflow programming systems. Microstructure,” MEMS Reliability and models for digital signal processing; University Service Qualification Workshop, NASA (JPL), hardware/software co-synthesis using Electrical Engineering: Associate Chair Pasadena, CA, August 1998. arbitrary collections of programmable for External Affairs; Undergraduate processors, reconfigurable logic blocks, M. Johnson and J. B. Bernstein, “Practi- Committee. Joint Math-Engineering and dedicated hardware units; perfor- cal, Reliable, Hermetic Laser Modifica- Committee for Use of Software Instruc- mance analysis of computing systems tion of Metallic Interconnect,” Microelec- tion; University Senate; College of that incorporate optical components; tronics Reliability and Qualification Engineering Alumni College Advisory architectural strategies for the design of Workshop, NASA (JPL), Pasadena, CA, Committee. June 1998 application-specific multiprocessors; and formal methods for models of Recent Publications Y. Chen, J. S. Suehle, B. Shen, J. B. computation that are employed in the H. G. Kwatny, C. LaVigna, and V. Bernstein, P. Chaparala, and C. specification of embedded systems. Polyakov, “Integrated Modeling and Messick, “The Correlation of Highly Recent Publications Design of Control System,” Proc. Accelerated Qbd Test to TDDB Life American Control Conf., June 1997. Tests for Ultra-Thin Gate Oxides,” Intl. S. S. Bhattacharyya, S. Sriram, and E. Reliability Physics Symposium, RENO, A. Lee, “Optimizing Synchronization in H. G. Kwatny, C. LaVigna, and M. NV, April 1998. Multiprocessor DSP Systems,” IEEE Mattice, “A Workstation for Design of Trans. on Signal Processing, vol. 45, no. 6, Distributed Parameter Control Sys- J. B. Bernstein, “Laser Formed Connec- pp. 1605-1618, June 1997. tems,” Proc. Conf. on Computing Tech. in tions for Programmable Wiring,” Proc. of the 21st Century, J. Periaux ed., Tours, P. K. Murthy, S. S. Bhattacharyya, and the Custom Integrated Circuits Conf., Santa France, May 1997.

University of Maryland · Department of Electrical Engineering 49 Rama Chellappa investigation. A dynamic sensor Society; IEEE signal Processing Society position and orientation estimation Technical Committee on Multimedia Professor, system is being developed, using an on- Signal Processing; DARPA Panels on Ph.D., Purdue board video camera and inertial sensors. Dynamic Database, Continuous University. This system includes a 2D motion Tracking; NSF/DARPASponsored IEEE Fellow, NSF estimation-based algorithm that gener- JTEC Panel on Digital Libraries. Presidential Young ates a background mosaic, from which University Service Investigator; features are extracted and used to Electrical Engineering Faculty Recruit- Distinguished Research estimate the 3D motion of the sensor. ing Committees. Faculty Fellow; Another area of investigation is pulse International Recent Publications LADAR. An existing LADAR ATR Association for Pattern Recognition R. Chellappa, P. Burlina, X. Zhang, Q. algorithm is being used to evaluate Fellow; Joint Appointment with Zheng, C. L. Lin,, V. Parameswaran, L. various sampling schemes to suggest an UMIACS. S. Davis and A. Rosenfeld, “Site Model optimal sampling pattern for LADAR Mediated Detection of Movable Object sensor design. In addition, a multisensor Research Interests Activities,” RADIUS: IU for Imagery ATR algorithm is being developed Dr. Rama Chellappa’s research interests Intelligence, O. Firschein, Morgan through the fusion of ATR and FLIR span several areas, including context- Kaufman, ed., pp. 285-318, 1997. based image exploitation, structure data. R. Chellappa, Q. Zheng, S. Kuttiked, S. from motion, super resolution, image His research on robust transmission of Shekjar and P. Burlina, “Site Model compression and automatic target compressed sources over noisy chan- Construction for Exploitation of EO recognition. nels-coding and transmission issues and SAR Images,” RADIUS: IU for focuses on several approaches for His research in Context-Based Image Imagery Intelligence, O. Firschein, Morgan robust transmission of compressed Exploitation involves the building of a Kaufman, ed., 1997. system for the interpretation of vehicu- source over noisy channels, including: lar traffic activities from aerial video (a) allocating source and channel coding R. Chellappa, Q. Zheng, C. Shekhar input. This includes both low level rates to the different subbands of a and P. Burlina, “Site Model Supported (automatic generation of panoramic source to minimize the end-to-end Targeting,” RADIUS: IU for Imagery views) and high level (interpretation of distortion, given constraints on the Intelligence, O. Firschein, Morgan events and activities using content overall rate; (b) minimization of the Kaufman, ed., pp. 357-372, 1997. average distortion over a fading channel derived from site models) processing. H. C. Liu, T. S. Hong, M. Herman and when only the channel statistics are The context-based exploitation ap- R. Chellappa, “A General Motion available at the transmitter; (c) Multiple proach has been extended to processing Model and Spatio-Temporal Filter for Description Coding within the frame- NADAR images using wide area site Computing Optical Flow,” Intl. J. of work of a classification based subband models. Applications to object level Computer Vision, vol. 22, pp. 141-172, coder; (d) the use of adaptive modula- change detection and object verification April 1997. have been demonstrated. tion for robust transmission of layered sources over time-varying channels; and P. Burlina, R. Chellappa and C. L. Lin, His research in Automatic Target (e) the use of soft-decision MAP “A Spectral Attentional Mechanism Recognition involves the use of SAR- decoding for joint source-channel Tuned to Object Configurations,” IEEE extracted features to classify targets in decoding. Trans. Image Processing, vol. IP-6, pp. SAR imagery. He is also incorporating 1117-1128, June 1997. multiple feature classes, which must Research is also being conducted on the each be matched within their own super-resolution of video data, or K. Etemad and R. Chellappa, “Discrimi- feature classes. methods used for recovering fine high nant Analysis for Recognition of frequency details in signals/images, Human Face Images,” J. Optical Society Another area of investigation is Rapid either by increasing the sampling of America, vol. 14, pp. 1724-1733, Target Update (RTU), the process of density or by extrapolating the spec- August 1997. incremental acquisition and recognition trum. Emphasis has been placed on or identification of objects from and Y. S. Yao and R. Chellappa, “Selective developing a general theory leading to a Stabilization of Images Acquired by approaching image sequence. He has practical algorithm working under proposed an algorithmic framework that Unmanned Ground Vehicles,” IEEE realistic conditions of sensor degrada- Trans. Robotics and Automation, vol. RA- integrates image sequence stabilization, tions and noise. moving object detection, segmentation, 13, pp. 693-708, October 1997. and object tracking algorithms. Professional Service K. B. Eom and R. Chellappa, “Non- Assoc. Ed., IEEE Trans. Pattern Analysis Autonomous sensor position and Cooperative Target Classification Using and Machine Intelligence; Board of Hierarchical Modeling of High Range orientation estimation is another area of Governors, IEEE Signal Processing

50 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Resolution Radar Signatures,” IEEE Mario Dagenais Professional Service Trans. Signal Processing, vol. SP-45, pp. American Physical Society and the 2318-2327, Sept. 1997. Professor, Optical Society of America; Senior Ph.D., University of C. Morimoto and R. Chellappa, “Fast 3- Member, Institute of Electrical and Rochester. D Stabilization and Mosaic Construc- Electronics Engineers; Co-Chair, Intl. Joint Appointment with tion,” IEEE Computer Soc. Conf. of Topical Meeting on “WDM Compo- UMIACS. Computer Vision and Pattern Recognition,” nents Technology,” sponsored by Puerto Rico, pp. 660-665, June 1997. IEEE/LEOS; Co-Editor, special issue on “Packaging Using Alignment C. Morimoto , P. Burlina and R. Tolerant Structures,” IEEE J. of Selected Research Interests Chellappa, “Video Coding Using Topics in Quantum Electronics; IEEE/ Hybrid Motion Compensation,” Proc. Professor Dagenais’ research interests LEOS Workshop on Semiconductor Conf. on Image Processing, vol. 1, pp. 89- are in the area of photonic switching, Lasers, CLEO’98, WDM & Broadband 92, Santa Barbara, Calif., October 1997. photonic integrated circuits, III-V Access /Optoelectronic Packaging integrated optoelectronics, and RF session organizer; Chair, Optoelectronic S. Matieu-Marni, S. Kuttikad and R. optoelectronics. In particular, he is Chellappa, “Context-Aided False Alarm Packaging, Reliability and Manufactur- interested in semiconductor traveling- ing Committee, LEOS’98; SPIE Reduction of SAR Automatic Target wave laser amplifiers; arrays of laser Recognition,” Proc. Conf. on Image Optoelectronic’98 Symposium, Vertical sources and detectors, and wavelength- Cavity Surface Emitting Lasers II Processing, vol. 1, pp. 885-888, Santa division multiplexed (WDM) optoelec- Barbara, Calif., October 1997. Committee; Chair, Optoelectronic tronics components—for application in Packaging, Reliability and Manufactur- S. Srinivasan and R. Chellappa, “Image optical interconnects, parallel data links, ing Committee, LEOS’97; Chair, Stabilization and Mosaicking Using the free-space optical communication, IEEE/LEOS Optoelectronic Packaging, Overlapped Basis Optical Flow Field,” optical networks and phased-array Manufacturing, and Reliability subcom- Proc. Conf. on Image Processing, vol. 3, pp. antennas. He is investigating the mittee. 356-359, Santa Barbara, Calif., October fabrication of active and passive 1997. optoelectronic devices based on III-V Recent Publications compound semiconductors, including S. A. Merritt, P. J. S. Heim, S. H. Cho, R. Meth and R. Chellappa, “Stability lasers, optical amplifiers, pin detectors and M. Dagenais, “Controlled Solder and Sensitivity of Topographic Features and waveguides. His group has patented Interdiffusion for High Power Semicon- for SAR Target Characterization,” Proc. a unique technique for the deposition of ductor Laser Diode Die Bonding,” Conf. on Image Processing, vol. 3, p. 467, broad band antireflection coatings of IEEE Trans. on Components, Packaging, Santa Barbara, Calif., October 1997. semiconductor lasers using real-time in- and Manufacturing Technology PartB: W. Phillips and R. Chellappa, “SAR situ ellipsometry. Substantial efforts are Advanced Packaging, vol. 20, no. 2, pp. Target Detection Algorithms on Linear being devoted to the area of hybrid 141-145, May 1997. SIMD Arrays,” Proc. Intl. Conf. Acoust., waferboard integration, using silicon G. A. Porkolab, Y. J. Chen, S. A. Speech, Signal Processing, pp. 4101-4105, substrates for the hybrid integration of Merritt, S. A. Tabatabaei, S. Agarwala, Munich, Germany, April 1997. optical and electronic devices, espe- F. G. Johnson, O. King, M. Dagenais, R. cially for the integration of alignment M. Srinivasan and R. Chellappa, “Joint A. Wilson, and D. R. Stone, “Wet- tolerant passive and active waveguides Source-Channel Coding of Images,” Chemistry Surface Treatment for Dark- Proc. Intl. Conf. Acoust., Speech, Signal with optical fibers. Flip-chip bonding is Current Reduction that Preserves a packaging approach actively being Processing, vol. 4, pp. 2925-2928, Lateral Dimensions of Reactive Ion pursued, particularly in connection with Munich, Germany, April 1997. Etched Ga47In53As Diode Photodetec- O-E devices array packaging. Dagenais tors,” IEEE Photonics Tech. Lett., vol. 9, V. Parameswaran, P. Burlina and R. is the project director for a WDM p. 490, 1997. Chellappa, “Performance Characteriza- testbed demonstration of a high perfor- tion and Learning Approaches for mance distributed shared memory S. W. Wilson, R. W. Armstrong, W. T. Vehicle Detection and Counting,” Proc. computing network called LIGHT- Beard, C. E. C. Colin, and M. Dagenais, Intl. Conf. Acoust., Speech, Signal Process- NING, and is the co-director of the “Oriented V-Groove Surfaces on Br2- ing, Munich, Germany, April 1997. NSF sponsored I/UCRC Center on CH3OH Etched (100) GaAs Wafers,” J. Optoelectronic Devices, Interconnects, of Materials Science: Materials in Electron- and Packaging (COEDIP), recently ics, pp. 109-113, 1997. formed at both the University of S. Kareenahalli, T. J. Tayag, M. Maryland and the University of Ari- Dagenais, and D. Stone, “Experimental zona. Confirmation of Phase Relationships in Multimode Interference Splitters Using a Shearing Type Near-Field Sagnac

University of Maryland · Department of Electrical Engineering 51 Interferometer,” IEEE Photonics Tech. P.J. S. Heim, M. Dagenais, N. A. R. Stone, “Packaging of Optical Inte- Lett., vol. 9, July 1997. Krainak, R. Leavitt, “High-Sensitivity grated Circuits Used in WDM Optical Semiconductor Optically Preamplified Communication Systems,” Inter Pack ‘97 F. G. Johnson, O. King, F. Seiferth, D. Q-PPM Receiver,” IEEE Photonics Tech. Conf. Proc., 1997. R. Stone, R. D. Whaley, M. Dagenais, Lett., vol. 9, pp. 1394-1397, 1997. and Y.-J. Chen, “Solid Source MBE M. Dagenais, V. Vusirikala, S. A. Growth and Regrowth of 1.55 µm V. Vusirikala, S. S. Saini, R. E. Bartolo, Merritt, S. Saini, R. E. Bartolo, and D. Wavelength GaInAsP/InP Ridge M. Dagenais, D. Stone, “Compact Mode R. Stone, “Alignment Tolerant Lasers Lasers,” Crsytal Growth, vol. 1756/176, Expanders Using Resonant Coupling and Silicon Waferboard Integration,” in pp. 46-61, 1997. Between a Tapered Active Region and Optoelectronic Interconnects and an Underlying Coupling Waveguide,” Packaging IV, R. T. Chen, P. S. G. A. Porklab, Y. J. Chen, S. A. Merritt, IEEE Photonics Tech. Lett., vol. 10, pp. Guilfoyle, Ed., Proc. of SPIE, vol. 3005, S. A. Tabatabaei, S. Agarwala, F. 203-205, 1998. pp. 38-47, 1997. Johnson, O. King, M. Dagenais, R. A. Wilson, and D. R. Stone, “Wet-Chemis- G. A. Porkolab, Y. J. Chen, S. A. D. J. Copeland, S. A. Tabatabaei, S. A. try Surface Treatment for Dark-Current Tabatabaei, S. Agrawala, F. G. Johnson, Merritt, M. Dagenais, S. Didde, R. Y. J. Reduction that Preserves Lateral O. King, M. Dagenais, R. E. Frizell, W. Chen, D. R. Stone, A. J. Sprinthorpe, Dimensions of Reactive Ion Etched T. Beard, and D. Stone, “Air-Bridge “Development and Performance of a 40 GaInAsP p-i-n Diode Detectors,” IEEE Ramps, Planarization, and Encapsula- Gbps DWM Laser Module,” in Design Photonics Tech. Lett., vol. 9, pp. 490-492, tion Using Pyrolythic-Photoresist in the and Manufacturing of WDM Devices, Proc. 1997. Fabrication of Three-Dimensional of SPIE, vol. 3234, pp. 54-63, 1997. Microstructures,” J. of Vacuum Sci. Tech., Z.F. Fan and M. Dagenais, “Optical B. Koley, M. Dagenais, R. Jin, G. vol. B., underbar 15, 1961 (1997). Generation of a mHz-Linewidth Simonis, J. Pham, R. D. Whaley Jr., F. Microwave Signal Using Semiconduc- F. Seiferth, F. G. Johnson, S. A. Merritt, Johnson, “Dependence of Lateral tor Lasers and a Discriminator-Aided S. Fox, R. D. Whaley, Y. J. Chen, M. Oxidation Rate on Thickness of AlAs Phase-Locked Loop,” IEEE Trans. on Dagenais, and D. Stone, “Polarization Layer of Interest as a Current Aperture Microwave Theory and Techniques, vol. 45, Insensitive 1.55 µm Optical Amplifier in Vertical Cavity Surface Emitting no. 8, pp. 1296-1300, August 1997. with GaAs Delta-Strained Lasers on Different Lasers on Different Ga0.47In0.53As Quantum Wells,” IEEE Physical Parameters,” Proc. of SPIE, vol. B. Koley, R. Jin, G. Simonis, J. Pham, Photonics Tech. Lett., vol. 9, pp. 1340- 3286, 1998. G. McLane, D. Stone, and M. Dagenais 1342, 1997. “Kinetics of Growth of AlAs Oxide in S. A. Merritt, F. Seiferth, V. Vusirikala, Selectively Oxidized Vertical Cavity J. V. Collins, M. Dagenais, and M. Itoh, M. Dagenais, Y. J. Chen, and D. R. Surface Emitting Lasers,” J. of Applied “Introduction to the Issue on Alignment Stone, “A Rapid Flip Chip Die Bonding Phys., vol. 82, pp. 4586-4589, 1997. Tolerant Structures for Ease of Opto- Method for Semiconductor Laser Diode electronic Packaging,” IEEE J. on Selected Arrays,” Proc. 47th Electronic Components M. Dagenais, “Dependence of Topics in Quantum Electronics, vol. 3, p. & Tech. Conf., IEEE Catalog Linewidth Enhancement Factor on the 1306, 1998. 97CH36048, pp. 775-779, 1997. Number of Compressivley Strained Quantum Well Lasers” IEEE Phot. Tech. V. Vusirikala, S. S. Saini, R. E. Bartolo, S. H. Cho, C. C. Lu, M. Hovinen, K. Letters, August 1997. S. Agarwala, R. D. Whaley, F. G. Nam, V. Vusirikala, J. H. Song, F. G. Johnson, D. R. Stone, and M. Dagenais, Johnson, D. R. Stone and M. Dagenais, P. J .S. Heim, Z. F. Fan, S. H. Cho, K. “1.55 µm inGaAsP/InP Laser Arrays “Dependence of Linewidth Enhance- Nam, F. G. Johnson, R. Leavit, and M. with Integrated Mode Expanders ment Factor on the Number of Dagenais, “Single-Angled-Facet Laser Fabricated Using a Single Epitaxial Compressivley Strained Quantum Diode for Widely Tunable External Growth,” IEEE J. of Selected Topics in Wells,” Conf. on Lasers and Electro-Optics, Cavity Semiconductor Lasers with High Quantum Electronics, vol. 3, pp. 1332- OSA Tech. Digest Series, vol. 11, 1997, pp. Spectral Purity,” Electron. Lett., vol. 33, 1343, 1998. 224-225, 1997. no. 6, pp. 1387-1388, July 1997. S. Agarwala, S. C. Horst, O. King, R. Z. F. Fan, P. Heim, K. Nam, S. H. Cho, V. Vusirikala, S. S. Saini, R. E. Bartolo, Wilson, D. R. Stone, M. Dagenais and T. M. Dagenais, F. G. Johnson, “Tunable R. Whaley, S. Agarwala, F. G. Johnson, J. Chen, “High Density Inductively External Cavity Semiconductor Lasers D. R. Stone and M. Dagenais, “High Coupled Plasma Ethcing of GaAs/ with a 50 dB Side Mode Suppression Butt-Coupling Efficiency to Single AiGaAs in BCL /CL /Ar: A Study Ratio,” Conf..on Lasers and Electro-Optics, Mode Fibers Using a 1.55 mm InGaAsP 3 2 Using a Mixture Design Experiment,” J. OSA Tech. Digest Series, vol. 11, pp. 225- Laser Integrated with a Tapered Ridge Vac. Sci. Tech., vol. B16, pp. 1-4, 1998. 226, 1997. Mode Transformer,” IEEE Phot. Tech. Lett., vol. 9, no. 11, pp 1472-1474, C.-H. Lee, H. Li, S. Didde, W. Lin, S. A. S.-H. Hsu, F. G. Johnson, Y.-C. Liu, F. J. November 1997. Merritt, Y.-J. Chen, M. Dagenais, and D. Towner, S. A. Tabtabaei, S. Agarwala, J.

52 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology V. Hryniewocz, Y.-P. Ho, W. Lin, Y.-J. ‘97, 10th Annual Mtg., IEEE Catalog ing, coding, and system engineering for Chen, M. Dagenais, and D. R. Stone, Number 97CH36057, vol. 2, pp. 130- high data rate, low bit-error perfor- “InGaAs p-i-n Photodiodes on AIGaAs/ 131, 1997. mance are being addressed. GaAs Waveguides and Monolithic S. H. Cho, S. Fox, D. R. Stone and M. Atmospheric trace gas detection Integration Applications,” Conf. on Dagenais, “High Power Diffraction currently involves measurement and Lasers and Electro-Optics, OSA Tech. Digest Limited Output from a Tapered Laser mapping of very small molecules at Series, vol. 11, pp. 448-449, 1997. Aperating at 1.55 µm,” Conf. Proc. LEOS concentrations into the low parts per P. J. S. Heim, M. Dagenais, M. A. ‘97, 10th Annual Mtg., IEEE Catalog trillion range. The technique uses Krainak, R. Leavitt, “High-Sensitivity Number 97CH36057, vol. 2, pp. 407- photothermal interferometry. Semiconductor Optically Preamplified 408, 1997. In the biophysics/bioelectromagnetics Q-PPM Direct-Detonation Receiver,” area, research is aimed at better under- Conf. on Lasers and Electro-Optics, OSA Christopher C. Davis standing the interaction of non-ionizing Tech. Digest Series, vol. 11, pp. 468-469, radiation with biological tissue. Dielec- 1997. Professor, Associate tric measurements of the tissues in the Dean and Director of R. D. Whaley, B. Gopalan, and M. head are being made to model the the Gemstone Program, Dagenais, “High Quality Dry Etched energy deposition from cellular tele- Ph.D., Manchester InP Semiconductor Laser Facets and phones. University, United Characterization Using Atomic Force Kingdom. University Service Microscopy,” Conf. Proc. LEOS ‘97, 10th IEEE Fellow; Institute Electrical Engineering: Chair, Ph.D. Annual Mtg., IEEE Catalog Number of Physics Fellow; Joint Panel; Human Relations Committee. 97CH36057, vol. 1, pp. 11-12, 1997. Appointment with ISR. Director, Gemstone Program and Z. F. Fan, P. J. S. Heim, and M. Associate Dean, A. James Clark School Dagenais, “Optical Generation of a Research Interests of Engineering; College Park Senate; Highly Coherent Microwave Signal by Dr. Davis’ research interests cover Senate Executive Committee; Senate Heterodyne Phase Locking Two Grating several areas: optical design, sensors, Implementation Committee; Senate Coupled External Cavity Semiconduc- and systems, especially biosensors; Committee on Committees; President’s tor Lasers,” Conf. Proc. LEOS ‘97, 10th near-field optical microscopy and Awards Committee; Chair, President’s Annual Mtg., IEEE Catalog Number lithography; line-of-sight optical Awards Committee; Council of Univer- 97CH36057, vol. 1, pp. 396-396, 1997. communication systems; optoelectronic sity System Faculty; Graduate School interconnects and packaging; atmo- S. Kareenahalli, S. Saini, M. Dagenais, Graduate Program Review Committee; spheric trace gas detection; biophysics; Graduate Council Academic Standards T. J. Tayag, G. Euliss, and D. R. Stone, and bioelectromagnetics. “Measurement of Output Phase Rela- Committee; College Park Representa- tionships of Multimode Interference Hybrid fiber optic sensors are being tive, Maryland Higher Education Splitters Using a Shearing-Type Near- developed for electric and magnetic Commission; College of Engineering Field Sagnac Interferometer,” Conf. Proc. field measurement. Sensors for biologi- Teaching and Learning Committee; LEOS ‘97, 10th Annual Mtg., IEEE cal and chemical agents use evanescent Council on Undergraduate Education; Catalog Number 97CH36057, vol. 1, fields to excite fluorescence from President’s Committee on the Quality pp. 401-402, 1997. surface bound layers, and interferomet- of Work Life; President’s Lesbian, Gay, ric and grating surface waveguide and Bi-sexual Commission; Chemical F. Seiferth, F. G. Johnson, S. A. Merritt, sensors detect surface-specific binding. Physics Program Committee; Chief S. Fox, R. D. Whaley, Y. J. Chen, M. Near-field optical microscopy is being Marshall, College of Engineering Dagenais, and D. R. Stone, “Polariza- carried out using tapered fibers and an Commencement Ceremonies. tion Insensitive 1.55-µm Optical interferometric reflection scheme that Recent Publications Amplifier with GaAs Delta-Strained provides amplitude and phase images, Conf. C. C. Davis, W. A. Atia, A. Gungor, D. Ga0.47In0.53As Quantum Wells,” with current resolution below 100nm. Proc. LEOS ‘97, 10th Annual Mtg., IEEE L. Mazzoni, S. Pilevar, and I. I. Any type of sample can be imaged, Smolyaninov, “Scanning Near-field Catalog Number 97CH36057, vol. 1, including live biological cells. pp. 335-336, 1997. Optical Microscopy and Lithography Research on line-of-sight optical with Bare Tapered Optical Fibers,” Laser V. Vusirikala, S. S. Saini, R. E. Bartolo, communication links involves terrestrial Physics, vol. 7, pp. 243-255, 1997. R. Whaley, S. Agarwala, F. G. Johnson, paths up to a few kilometers long along D. R. Stone and M. Dagenais, “High R. B. Wagreich and C. C. Davis, paths close to the ground where the “Accurate Magneto-Optic Sensitivity Butt-Coupling Efficiency to Single problems of atmospheric turbulence Mode Fibers Using a 1.55 υm InGaAsP Measurements of Some Diamagnetic and obscuration can be significant. Glasses and Ferrimagnetic Bulk Crystals Laser Integrated with a Tapered Ridge Issues such as fading, aperture averag- Mode Transformer,” Conf. Proc. LEOS Using Small Applied AC Magnetic

University of Maryland · Department of Electrical Engineering 53 Fields,” IEEE Trans. on Magnetics, vol. OSA Technical Digest Series, vol. 16, pp. 8- systems and neural networks; cluster- 33, pp. 2356-2361, 1997. 12, Williamsburg, Va., 1997. ing, visualization and learning using multi-dimensional data for data mining, I. I. Smolyaninov, D. L. Mazzoni, J. S. Pilevar, C. C. Davis and F. Portugal, cognitive information and image Mait, and C. C. Davis, “Experimental “Evanescent Wave Tapered Optical selection, learning and cognitive Study of Surface-Plasmon Scattering by Fiber Gene Probe Assay Sensor,” 12th systems operating in real-time multipro- Individual Surface Defects,” Phys. Rev., Annual Conf. on Optical Fiber Sen- cessor environment. vol. B56, pp. 1601-1611, 1997. sors,” OSA Technical Digest Series, vol. 16, pp. 362-365, Williamsburg, Va., 1997. Applications include: design of auto- I. I. Smolyaninov, A. V. Zayats and C. mated aids to diagnostic and therapeutic C. Davis, “Near-Field Second-Harmonic A. Fielding and C. C. Davis, decision making regarding structural Imaging of Ferromagnetic and Ferro- “Flourescent Porous Sol-gel Coatings and functional abnormalities (in electric Materials,” Optics Lett., vol. 22, for Near-IR Single-Mode Fiber Chemi- machines and/or in humans; hierarchial pp. 1592-1594, 1997. cal Sensors,” Conf. on Micro- and Nano- planning for autonomous vehicle path Fabricated Structures and Devices for I. I. Smolyaninov, A. V. Zayats and C. planning and formation keeping and Biomedical Environmental Applications, C. Davis, “Near-Field Second Harmonic designs of machine functional units and SPIE BiOS ‘98 Intl. Biomedical Symp. at Generation from a Rough Metal architectures inspired by brain struc- Photonics West, San Jose, Calif., January Surface,” Phys. Rev., vol. B 56, 9290- tures and functions. These topics 1998. 9293, 1997. provide support and M.S. theses and I. I. Smolyaninov, C. H. Lee, C. C. W. A. Atia, S. Pilevar and C. C. Davis, Ph.D. dissertation research material for Davis and A. V. Zayats, “Near-Field “Piezoelectric Tuning Fork Force several graduate students and a few Optical Microscopy of Surface Second Sensing of Optical Fiber Cantilevers,” undergraduate research and design Harmonic Generation,” 1998 March Mtg. 4th Workshop on Industrial Applications of topics. Significant results in sponsored of the American Physical Society, abstract Scanned Probe Microscopy, NIST, research include: application of neural in Bull. Am. Phys. Soc., vol. 43, p. 481, Gaithersburg, Md. networks in cluster analysis; neural Los Angeles, Calif., March 1998. network based planner/learner for I. I. Smolyaninov, A. V. Zayats and C. control systems; visual heuristics for C. Davis, “Mapping of Piezoelectric Nicholas DeClaris data clustering; an unsupervised neural Ceramic Poling Using a Near-Field network approach to medical data Optical Microscope,” 4th Workshop on Professor, mining techniques; heuristic similarity Industrial Applications of Scanned Probe Sc.D., Massachusetts measure characterization for content- Microscopy, NIST, Gaithersburg, Md. Institute of Technology. based image retrieval and a machine I. I. Smolyaninov and C. C. Davis, IEEE Fellow; Joint Pathology to system research and “Confined Surface Plasmon Beams Appointment with engineering. Produced by Surface Defects: Potential School of Medicine, UMAB. Professional Sevice for Novel Sensor Applications,” CLEO Vice President for Publications, IEEE ‘97, OSA Tech. Digest Series, vol. 11, pp. Research Interests Systems, Man and Cybernetics Society; 146-147, Baltimore, Md., May 1997. Dr. DeClaris’ research interests are in IEEE SMC Executive Administrative C. C. Davis, “In Vitro and In Vivo the intersection of system science, Committee; Intl. Federation for Infor- Dosimetry of RF and Microwave computer engineering, and medicine. mation Processing, Permanent Working Exposure,” Second World Congree for He directs the E.E. Medical Informatics Committee Member on Modeling and Electricity and Magnetism in Biology and and Computational Intelligence Re- Simulation; Intl. Conferences on Medicine,” published in World Congress search Laboratory (http:// Advances in Comm. and Control Abstract Book, Bologna, Italy, June www.ee.umd.edu/medlab). He is also (COMCON), Permanent Program 1997. Professor in the Pathology Department Committee Member; 1999 Joint Intl. of the University of Maryland School of Conf. on Neural Networks Technical C. C. Davis, L. S. Taylor, and E. C. Medicine in Baltimore, and Director of (IEEE/INNS) Program Committee; Elson, “Complex Dielectric Constants the Medical Informatics Division. His World Congress of Nonlinear Analysts of Tissues in the Head,” Second World current emphasis is on exploratory 2000 Technical Program Committee. Congress for Electricity and Magnetism in research in computational intelligence Biology and Medicine, published in World and in pathology informatics. He leads Recent Publications Congress Abstract Book, Bologna, Italy, interdisciplinary research teams that N. DeClaris, “Neural Networks,” in the June 1997. involve novel computational intelli- Encyclopedia of Science and Technology, McGraw-Hill Book Company, New C. C. Davis, “Fiber Near-Field Micros- gence and knowledge engineering York, 1998, pp 752-757. copy,” invited Plenary Address at the methodologies such as: integration of 12th Intl. Conf. on Optical Fiber Sensors, intelligent databases, expert and fuzzy M.-C. Su, N. DeClaris and T.-K. Liu, “Application of Neural Networks in

54 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Cluster Analysis,” 1997 IEEE Intl. Conf. special electromechanical machines. Committee; 1998 IEEE International on Systems, Man and Cybernetics, vol. 1, Currently he is working on the design Symposium on Information Theory pp. 1-6, Oct. 1997. of a very small generator with a tiny Technical Program Committee; 1998 amount of mechanical input power. IEEE INFOCOM Technical Program W. Peng, and N. DeClaris,, “Heuristic Eddy current losses and hysteresis losses Committee; 1998 IEEE International Similarity Measure Characterization for need to be minimized (practically Symposium on Computer Communica- Content-Based Image Retrieval,” 1997 eliminated) in order to obtain sufficient tions Technical Program Committee; IEEE Intl. Conf. on Systems, Man and efficiency. IEEE Technical Activities Board Cybernetics, vol. 1, pp. 7-12, Oct. 1997. University Service Strategic Planning Committee T.-D. Tran-Luu and N. DeClaris, (SPARC); IEEE Fellows Committee; Department of Electrical Engineering “Visual Heuristics for Data Clustering,” Columnist; IEEE Information Theory Facilities Committee; Coordinater of a 1997 IEEE Intl. Conf. on Systems, Man Society Newsletter (Historian’s Column); distance learning program involving and Cybernetics, vol. 1, pp. 19-24, Oct. ABET Evaluator; Editorial Board, three sister campuses: University of 1997. Journal on Wireless Networks; Guest- Maryland Eastern Shore (UMES), Editor, Journal of Wireless Networks on N. DeClaris, H. Szu, K. Baheti, and J. Salisbury State University (SSU), and Satellite Systems; Guest-Editor, IEEE Wentworth, “Forum on Computational Frostburg State University (FSU). Cybernetics—Its Opportunity and JSAC Satellite and Hybrid Networks. Challenge,” 1997 IEEE Intl. Conf. on Anthony Ephremides University Service Systems, Man and Cybernetics, vol. 2, pp. University Appeals Committee. Electri- 969-976, Oct. 1997. Professor, cal Engineering: Department Ph.D. J. Albus, N. DeClaris, A. Lacaze and A. Ph.D., Princeton Panel. ISR: Appointments and Tenure Meystel, “Neural Network Based University. Committee; Salary Committee. IEEE Fellow; Planner/Learner for Control Systems,” Recent Publications Joint Appointment with Proc. Intl. Conf. on Intelligent Systems and P. Bhattacharya, L. Tassiuslas, A. ISR. Semiotics: A Learning Perspective, pp 75- Ephremides, “Optical Scheduling with 81, NIST, Sept. 1997. Deadline Constraints in Tree Net- N. DeClaris, “Beyond Viruses: Machine Research Interests works,” IEEE Trans. on Automatic Pathology—New Horizons in System Dr. Ephremides’ research interests are Control, pp. 1703-1705 December 1997. Research and Engineering,” Proc. Sixth in the area of communication sciences D. Ayyagari, A. Ephremides, “A Intl. Conf. on Advances in Communication and systems, including wireless, satel- Satellite-Augmented Cellular Network and Control, COMCON, UNLV, 1997 lite, and hybrid systems, and modeling, Concept,” Journal of Wireless Networks, analysis, and evaluation issues. His D. Shalvi and N. DeClaris, “An Unsu- pp. 189-199, February 1998. current research activities include pervised Neural Network Approach to mobility tracking, algorithms for self- G. D. Nguyen, J. Wieselthier, A. Medical Data Mining Techniques,” Proc. organizing networks, optimal indoor Ephremides, “Lagrangian Techniques 1998 Intl. Joint Conf. on Neural Networks wireless network designs, directive for Optimizing Throughput in Wireless (IJCNN98), IEEE and INNS, Anchor- antennas, and spot-beam switching. He Communication Networks Subject to age, AK, 1998. headed a broad experimentation and QoS Constraints,” Proc. Conf. on Information Sciences and Systems, pp. 405- Fawzi P. Emad simulation test-bed program that involved NASA’s Advanced Communi- 410, Baltimore, MD, March 1997. cation Technology Satellite, and is Professor, J. Wieselthier, C. Barnhart, A. Ephre- interested in design tools for optimal Ph.D., Northwestern mides, “Ordinal Optimization of network performance. His research aims University. Discrete-Event Dynamic Systems: A at combining networking and signal Comparison of Standard-Clock and processing issues as they arise in the Common-Random-Number Methods,” design of future networks that offer Proc. Conf. on Information Sciences and multimedia services. Related activities Systems, pp. 654-659, Baltimore, MD, include queueing system modeling and March 1997. Research Interests analysis and optimization. Recently, he D. Friedman, A. Ephremides, “A Dr. Emad’s research interests are in the has initiated an effort in exploring the Scheme to Improve Throughput for general areas of control, power systems, impact of wireless networking protocols ARQ-Protected Satellite Communica- and electromagnetics. His current on energy efficiency. tion,” Proc. Intl. Mobile Satellite Conf., pp. research activities are in the areas of Professional Service 39-43, Pasadena, CA, June 1997. nondestructive testing of aggregate and 1997 IEEE International Symposium on K. Sayrafian-Pour, A. Ephremides, “Can amorphous materials, maglev, and Information Theory Technical Program

University of Maryland · Department of Electrical Engineering 55 Spatial Separation Increase Throughput Systems, pp. 256-264, Yokohama, Japan, area network. Currently, we have two of Conflict Resolution Algorithms?” February 1998. experimental platforms for software- Proc. Intl. Symposium on Information only implementation of real-time video Theory, pp. 318-319, Ulm, Germany, July Nariman Farvardin compression systems. 1997. Finally, there is another activity under- Professor and Chair, R. Bhattacharya, A. Ephremides, “A way on the development of region of Ph.D., Rensselaer Distributed Multicast Routing Protocol interest coding techniques for still image Polytechnic Institute. for Ad-Hoc (Flat) Mobile Wireless compression situations. IEEE Fellow; Networks,” IEEE Conf. on Personal, NSF Presidential University Service Mobile, Indoor, Radio Communications Young Investigator; Chair, Department of Electrical Engi- (PIMRC), pp. 877-881, Helsinki, Finland, Joint Appointment with neering; Middle States Self-Study September 1997. ISR. Steering Committee; Strategic Plan W. Luo, A. Ephremides, “Effect of Research Interests Advisory Committee; Chair, Aerospace Packet Length and Power Level on Engineering Chair Search Committee; Dr. Farvardin’s research interests are in Random Multiple Access,” Proc. 35th Chair, Committee for UMCP Policy on the general area of information theory Annual Allerton Conf. on Communication, Indirect Cost Rates; Committee for and coding, signal compression with Control, and Computing, pp. 583-585, Institute for Plasma Research Review; applications to speech, image and video Monticello, IL, September 1997. Strategic Plan Advisory Committee; coding and transmission, speech and Presidential Search Committee, Univer- J. Wieselthier, C. Barnhart, A. Ephre- speaker recognition and digital commu- sity of Maryland; School for Engineer- mides, “Three Techniques for Ordinal nications. His current research activities ing Information Technology Commit- Optimization: Short Simulation, Crude are heavily focused on signal compres- tee. Analytical Models, and Imprecise sion and coding for heterogeneous Simulation Models,” Proc. of 1997 Intl. communication networks, including Recent Publications Conf. on Intelligent Systems and Semiotics, wireless links. This includes the study of N. Phamdo, F. Alajaji and N. Farvardin, pp. 175-181, Gaithersburg, MD, Septem- efficient, low-complexity and scalable “Quantization of Memoryless and ber 1997. compression systems. Here, scalability Gauss-Markov Sources over Binary J. Wieselthier, G. Nguyen, A. Ephre- refers to scalability in resolution (both Markov Channels,” IEEE Trans. mides, “Algorithms for Finding Optimal temporal and spatial) and scalability in Commun., vol. 45, pp. 668-675, June Offered Loan in Wireless Communica- encoding rate. Scalability in resolution 1997. is an important feature in multicasting tion Networks,” Proc. IEEE MILCOM, R. Joshi, H. Jafarkhani, J. Kasner, T. applications where different receivers Session 41.06, Monterey, CA, Novem- Fischer, N. Farvardin, M. Marcellin and have different resolutions, whereas ber, 1997. R. Bamberger, “Comparison of Differ- scalability in encoding rate provides the ent Methods of Classification in S.-T. Yang, A. Ephremides, Optimal capability for progressive transmission, Subband Coding of Images,” IEEE Network Design: The Base Station a desirable property for telebrowsing. Placement,” Proc. IEEE Conf. on Decision Trans. Image Proc., pp. 1473-1487, and Control (CDC), pp. 2381-2386, San Another component of this research November 1997. concentrates on the development of Diego, CA, December 1997. H. Jafarkhani, H. Brunk and N. Farvar- techniques for robust transmission of din, “Entropy-Constrained Successively S.-T. Yang, A. Ephremides, “Topological compressed signals over noisy commu- Refinable Scalar Quantization,” Data Design of Interconnected LANs Using nication channels, such as those arising Compression Conference, pp. 337-346, Hopfield Neural Networks,” Proc. IEEE in wireless networks. This includes the Snow Bird, UT, April 1997. Conf. on Decision and Control (CDC), pp. study of power control policies, chan- 3568-3573, San Diego, CA, December nel-adaptive decoding schemes, com- P. Ligdas and N. Farvardin, “Finite-State 1997. bined source-channel coding schemes, Power Control for Fading Channels,” D. Ayyagari, A. Ephremides, “Cellular unequal error protection, and dynamic Proc. Conf. on Information Sciences and DS-CDMA Capacity for Integrated rate allocation mechanisms. A goal of Systems, pp. 399-404, Johns Hopkins Voice and Data Services,” Proc. 17th this research is the establishment of a University, Baltimore, MD, March, AIAA Intl. Communication Satellite real-time, multimedia, signal transmis- 1997. Systems, pp. 256-264, Yokohama, Japan, sion platform for communication over V. Chande, H. Jafarkhani and N. February 1998. wireless communication networks. Farvardin, “Joint Source-Channel Another related activity is the develop- T. Elbatt, A. Ephremides, “Optimization Coding of Images for Channels with ment of low-rate, low-complexity and Feedback,” Proc. IEEE Information Theory of Connection-Oriented, Mobile, multi-resolution video compression Hybrid Network Systems,” Proc. 17th Workshop, (invited paper), pp. 50-51, San systems for real-time, desktop video Diego, CA, Sept. 1997. AIAA Intl. Communication Satellite teleconferencing over a wireline local

56 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Jeffrey Frey Jerome A. Gansman depending on whether fixed acquisition time or fixed acquisition performance is Professor, Assistant Professor, more important. Dr. Gansman has also Ph.D., University of Ph.D., Purdue investigated techniques to use the pilot California, Berkeley. University. symbols to estimate frequency mis- IEEE Fellow. Joint Appointment match between the transmitter and with ISR. receiver, i.e., carrier synchronization, and the effects of the pilot frame structure on the estimation perfor- mance. His future research projects in Research Interests Research Interests PSAM systems will involve symbol Dr. Frey’s research interests are in the Dr. Gansman's research interests lie in timing estimation and optimum frame general area of the physics of very small many different aspects of physical layer structure design. semiconductor devices, as used in VLSI communication systems - particularly in circuits and in opto-electronic and digital communications theory, fading University Service microwave systems. channel communications, and synchro- ISR 1998 ISR Elections Board nization of communications systems. His current research activities are in the Recent Publications areas of new approaches to integrated His recent research has focused on J. Gansman, M. Fitz and J. Krogmeier, circuit mass production and the useful synchronization issues for narrowband “A Comparative Study of a Class PSAM application of hot-electron phenomena land mobile wireless communications Frame Synchronizers,” Intl. J. of Wireless in semiconductor devices. He is exam- channels. In a narrowband wireless Info. Networks, vol. 4, no. 1, pp. 7-20, ining alternatives to standard batch- communications system the symbol 1997. based wafer processing—which may time is very long compared to the J. Gansman, M. Fitz and J. Krogmeier, result in higher throughput, greatly multipath delay spread on the channel, “Optimum and Suboptimum Frame increased flexibility in product, and so the multipath is combined into a Synchronization for Pilot Symbol lower factory costs. These alternatives single multiplicative distortion process Assisted Modulation,” IEEE Trans. make considerable use of energy-beam (i.e., frequency non-selective fading). Comm., vol. 45, no. 10, pp. 1327-1337, processing, such as ion and laser- This environment generates very little October 1997. assisted etching, deposition, and ISI and rarely requires sophisticated materials growth. equalization techniques; however, the J. Grimm, M. Fitz, J. Krogmeier, T.-A. multipath distortion process can Chen, T. Magnusen, J. Gansman, and He is also exploring the use of short- produce significant signal fading on W.-Y. Kuo, “High Efficiency channel MOSFET’s in a new configura- mobile links and significant perfor- Narrowband Wireless Modems for ITS tion as light emitters. These devices mance variation with antenna location Applications,” Intelligent Transportation make use of the very energetic electrons on stationary links. Mitigating the Systems (ITS) Journal, vol. 3(4), pp. 333- that are generated in the channel of effects of these deep fades is critical to 352, 1997. these MOSFET’s, and hold the promise achieving reliable communication at a of very small but very intense light J. A. Gansman, M. P. Fitz, and J. V. reasonable signal-to-noise ratio (SNR). sources. Krogmeier, “Maximum Likelihood Periodically transmitting a known Frame Synchronization for PSAM,” Professional Service symbol essentially provides the receiver Proc. Forty-Seventh Annual IEEE Vehicular NSF Graduate Fellowship Selection with a sample of the bandlimited fading Technology Conf., pp. 1054-1058, May Panel. process which it can use to derive its 1997. University Service amplitude and phase reference. This method for achieving coherent commu- J. Grimm, M. P. Fitz, J. V. Krogmeier, Electrical Engineering: Graduate nications is referred to as pilot symbol T.-A. Chen, J. A. Gansman, T. Studies and Research Committee. assisted modulation (PSAM). Magnusen, and W.-Y. Kuo, “An Efficient Modem for Narrowband Wireless Dr. Gansman has developed several Communications in the 220 MHz optimum and reduced complexity Band,” (invited) Proc. 47th Annual IEEE frame synchronization algorithms for Vehicular Technology Conf., pp. 909-913, locating the known pilot symbols in the Phoenix, AZ, May 1997. noisy received data stream. These algorithms are based on a quadratic correlation detector which is tailored to the second order statistical characteris- tics of the channel and provide a modem designer two alternatives

University of Maryland · Department of Electrical Engineering 57 Evaggelos Geraniotis sensitivity analysis and control optimi- Systems (CISS), pp. 45-50, Baltimore, zation of protocols for connection March 1997. Professor, admission control, bandwidth alloca- S.-C. Liu and E. Geraniotis, “An Ph.D., University of tion/multiplexing, routing, buffer Eigenvalue Decomposition and Interfer- Illinois, Urbana- management, switch control, flow ence Cancellation Array Processing Champaign. control, and hand-off. Versions of these Algorithm for Low Mobility CDMA tools which can stand alone or can Communications,” Proc. 1997 IEEE support OPNET simulation software Signal Processing Workshop on Advances in are developed. Wireless Communications, pp. 205-208, Research Interests Professional Service Paris, France, April, 1997. Dr. Geraniotis’ research interests are in Intl. Symposium on Computers and F. Fruth and E. Geraniotis, “A Blind the area of communication networks — Communications (ISCC’98) Technical Adaptive Array Algorithm for Multi- with emphasis on wireless networks, Program Committee; 5th IEEE Intl. Media CDMA Wireless Networks,” digital communication systems with Symposium on Spread Spectrum Proc. 1997 Intl. Conf. on Telecommunica- emphasis on spread-spectrum tech- Techniques and Applications tions (ICT), Melbourne, Australia, pp. niques, and signal interception and (ISSSTA’98) Intl. Advisory Committee. 1187-1192, April, 1997. exploitation, with emphasis on multi- University Service C.-H. Chou and E. Geraniotis, “Model- sensor fusion and non-Gaussian Graduate Studies and Research Com- ing of Long-Range Dependent Traffic in processing techniques. mittee. ATM Networks Using Heterogeneous The main thrust of his current research Recent Publications On-Off Sources,” Proc. 1997 Intl. Conf. activities focuses on the design and E. Geraniotis and Y.-W. Chang, “Opti- on Telecommunications (ICT), pp. 111 - performance evaluation of cellular, mal Joint Handoff and Code Assign- 115, Melbourne, Australia, April 1997. personal communications system (PCS), ment in Cellular CDMA Networks,” S.-C. Liu and E. Geraniotis, “High spread-spectrum (CDMA) techniques. Wireless Communications: TDMA versus Performance Array Algorithm for DS/ Issues of wireless channel modeling, CDMA, S. Glisic and P. Leppanen CDMA Communications,” Proc. 1997 interference mitigation, antenna and Editors, Kluwer Academic Publishers, IEEE Vehicular Technology Conf. (VTC), path (RAKE) diversity combining, Norwell, MA, pp. 181-187, September pp. 1173-1176, Phoenix, AZ, May 1997. power control, dynamic code allocation, 1997. multi-media multi-rate traffic integra- H.-J. Su and E. Geraniotis, “Perfor- tion, cell/microcell/picocell hand-off, Y.-W. Chang and E. Geraniotis, “Opti- mance Analysis of an Asynchronous the interfaces with backbone PSTN, mal Policies for Handoff and Channel Wavelet Packet Division Multiple LAN and ATM wireless networks, user Assignment in Networks of LEO Access System,” Proc. 1997 Communica- mobility management, and registration Satellites Using CDMA,” Special Issue tions and Control Conf. (COMCON), pp. are studied, and the systems designs are on Satellite Communications, J. on 267-272, Corfu, Greece, June 1997. optimized. Similar research issues and Wireless Networks, Baltzer AG, Science Publishers pp. 181-187, February 1998. W.-C. Chan and E. Geraniotis, “A optimized system designs are pursued Medium Access Protocol for Intercon- for wireless networks using TDMA- H.-J. Su and E. Geraniotis, “Perfor- necting ATM and Wireless Networks,” based multiple-access techniques. mance Comparison Between Wavelet Proc. 1997 IEEE Intl. Conf. on Communi- Another substantial thrust of his Packet Division MA and DS/CDMA in cations, pp. 1448-1453, Montreal, research focuses on the development of Bandlimited Channels,” Proc. 1997 Conf. Canada, June 1997. analytical techniques and software tools on Information Sciences and Systems for the modeling, performance evalua- (CISS), pp. 960-965, Johns Hopkins M. Khairy and E. Geraniotis, “Effect of tion, and design of multi-media high- Univ., March 1997. Time Jitter on Synchronous CDMA speed (e.g., ATM and B-ISDN) as well Networks and Quasi-Orthogonal P. C. Li and E. Geraniotis, “Effect of as hybrid (wireline, terrestrial wireless, Sequences,” Proc. 1997 Symposium on Amplifier Nonlinearity on Synchronous and satellite) networks. Multi-media Computers and Communications (ISCC), M-PSK DS-CDMA,” Proc. 1997 Conf. on variable-rate traffic models based on pp. 260-264, Alexandria, Egypt, July Information Sciences and Systems (CISS), Markov processes and self-similar 1997. pp. 966-971, Johns Hopkins Univ., processes are studied, together with March 1997. P.-C. Li and E. Geraniotis, “Effect of analytical approximation techniques for Amplifier Nonlinearities on Synchro- accurate but fast performance evalua- C.-H. Chou and E. Geraniotis, “Effects nous M-PSK CDMA Terrestrial and tion of end-to-end QoS (quality of of Higher-Order Statistics and Time Satellite Systems.” Proc. 1997 Symposium service) of the multi-media traffic and Scales of LRD Traffic on Resource on Computers and Communications performance measures at the intermedi- Allocation of ATM Networks.” Proc. (ISCC), pp. 275-279, Alexandria, Egypt, ate network nodes; these are used for 1997 Conf. on Information Sciences and July 1997.

58 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology W.-C. Chan, V. D. Nguyen and E. Frequency-Hopped Multiple-Access Another significant component of this Geraniotis, “An Adaptive Hybrid FEC/ Networks,” Proc. Annual Conf. of the research is authentication in networks ARQ Protocol Using Turbo Codes,” Advanced Telecommunications/Information and distributed systems, organized as a Proc. 1997 Intl. Conf. on Universal Personal Distribution Research Program—An ARL set of interconnected administrative Communications (ICUPC), pp. 541-545, Federated Laboratory, pp. 182-186, realms or domains. Cross-realm San Diego, CA, October 1997. January 1998. authentication policies may differ from application to application, and the S. Yao and E. Geraniotis, “Performance W.C. Chan and E. Geraniotis, “An design and implementation of sound Evaluation of a Multi-Rate CDMA Adaptive Hybrid FEC/ARQ Protocol policies constitute a key aspect of secure System with Orthogonal Modulation Using Turbo Codes for Multi-Media user authentication in very large over a Multipath Fading Channel,” Transmission of ATM over Wireless distributed systems and networks. Proc. 1997 Intl. Conf. on Universal Personal Networks,” Proc. Annual Conf. of the Communications (ICUPC), pp. 632-636, Advanced Telecommunications/Information His research also includes scalable San Diego, CA, October 1997. Distribution Research Program—An ARL access control systems, and penetration Federated Laboratory, 177-181, January analysis techniques. Current access S.-C. Liu and E. Geraniotis, “Array 1998. control systems, which are generally Processing for Slow Frequency-Hopped based on per-object, access-control lists, Multiple-Access (FHMA) and FH/ M. Hadjitheodosiu and E. Geraniotis do not scale up to configurations of TDMA with Overlap Channel Trans- “Dynamic Bandwidth Allocation for hundreds of thousands of users and mission,” Proc. 1997 IEEE Conf. on Multi-Media Traffic in TDMA Broad- millions of objects, as one might find in Global Communications (GLOBECOM), band Satellite Networks,” Proc. 18th a global enterprise. Here, scalability pp. 394-398, Phoenix, AZ, October, AIAA Intl. Communications Satellite refers to the ability to distribute, review, 1997. Systems Conf., pp. 178-186, Yokahama, and revoke access permissions for Japan, February 1998. P.-C. Li and E. Geraniotis, “Effect of different users of the enterprise cor- Amplifier Nonlinearities on Asynchro- Virgil D. Gligor rectly and efficiently. Role-based access nous DS/CDMA Systems,” Proc. 1997 control is being investigated as the basis IEEE Conf. on Military Communications Professor, for scalable access management. (MILCOM), pp. 124-128, Monterey, CA, Ph.D., University of Another related activity is the penetra- November 1997. California, Berkeley. tion analysis of computer systems and S.-C. Liu and E. Geraniotis, “Joint networks. Until recently, most aspects Frequency Compensation and Angle of penetration analysis involved ad hoc Estimation for Array Processing in means of unauthorized retrieval, Frequency-Hopped Multiple-Access corruption, or denying access to data (FHMA) Networks,” Proc. 1997 IEEE and services. His research in this area Research Interests Conf. on Military Communications focuses on the penetration analysis Dr. Gligor’s research interests are in the (MILCOM), pp. 271-274, Monterey, CA, models, which would allow early general area of computer, distributed November, 1997. detection of design and implementation system, and network security. His errors that lead to successful penetra- S. Chuprun, C. Bergstrom, E. current research activities are focussed tion. Geraniotis, and H. ElGamal, “Compari- on cryptographic protocol analysis, in son of FH/CDMA and DS/CDMA for particular, message integrity and Professional Service Wireless Survivable Networks,” Proc. authentication protocols in large J. of Computer Security Editorial Board; Annual Conf. of the Advanced Telecommu- computer networks. Message integrity Session Chair, High-Fidelity Crypto nications/Information Distribution Research research includes both the crypto- Protocols, DIMACS Workshop on Program—An ARL Federated Laboratory, graphic protection of message content Cryptographic Protocols; 13th Com- pp. 347-352, January 1998. and the authentication of the message puter Security Applications Conf. H. ElGamal and E. Geraniotis, “En- origin. Because message integrity is a Program Committee; Naval Research hancing the Capacity of Frequency- desirable property for a large variety of Laboratory Research Review Panel, Hopped Multiple-Access Networks: seemingly different protocols and Information Technology Division; Synchronous FH/SSMA,” Proc. Annual applications, an abstract formal model INFOSEC Science and Technology Conf. of the Advanced Telecommunications/ of message integrity is being developed Study Group; Chair, DARPA ISAT. Information Distribution Research Pro- for protocol analysis. University Service gram—An ARL Federated Laboratory, pp. The preliminary application of this Electrical Engineering: Undergraduate 172-176, January 1998. model to protocol analysis has helped Studies Committee; Graduate Studies S.C. Liu and E. Geraniotis, “Antenna the discovery of integrity flaws in well- and Research Committee; Promotion Array Processing Techniques for known protocols used in practice. and Tenure Committee; Post-Tenure Review Committee; PhD/MS Qualify-

University of Maryland · Department of Electrical Engineering 59 ing/Comprehensive Exam Committee. L. Burdge and J. Goldhar, “Optical Bit- Infrastructure/WDM Components Technol- Recent Publications Pattern Recognition by use of Dynamic ogy/Advanced Semiconductor Lasers and Gratings in Erbium-doped Fiber,” Optics Applications/Gallium Nitride Materials, V. Gligor and S.-P. Shieh, “On a Lett., vol. 22, no. 23, pp. 1757-1759, Dec. Processing, and Devices (Cat. no. Pattern-Oriented Model for Intrusion 1997. 97TH8276), Montreal, Quebec, August Detection,” IEEE Trans. on Knowledge 1997. and Data Engineering, vol. 9, no. 4, pp. P. S. Cho, D. Mahgerefteh, J. Goldhar 661-667, July/August 1997. and G. L. Burdge, “RZ Wavelength Neil Goldsman Conversion with Reduced Power S. Gupta, S. Chandersekaran, V. Gligor, Penalty Using a Semiconductor-Optical- S. Malik, M. Muresan and D. Shankar, Associate Professor, Amplifier/Fiber-Grating Hybrid “Towards a Framework-based Solution Ph.D., Cornell Device,” IEEE Photonics Tech. Lett., vol. to Cryptographic Key Recovery,” Proc. University. 10, no. 1, pp. 66-68, Jan. 1998. Public-Key Solutions Conf., pp. 1-12, Joint Appointment with Toronto, Canada, April 1997. D. Mahgerefteh, P. Cho, J. Goldhar and ISR. G. L. Burdge, “Technique for Suppres- V. Gligor, “Characteristics of Role- sion of Pattern Dependence in a Based Access Control,” Proc. 1st ACM Semiconductor-Optical-Amplifier Workshop on Role-Based Access Control, Wavelength Converter,” IEEE Photonics Research Interests (Youman, Sandhu, Coyne (eds.), vol. II, Tech. Lett., vol. 9, no. 12, pp. 1583-1585, Professor Goldsman’s research activities pp. 9-14, Gaithersburg, Md., Dec. 1995. Dec. 1997. are in the areas of new electronic devices, circuits and materials. The Julius Goldhar D. L. Hatten, J. Zhu, J. Goldhar, W. T. major objectives of his research are to Hill, III, “Above Threshold Disociation develop computer models which help to Professor, of CO+2” Laser Physics, vol. 7, no. 3, pp. optimize the performance and reliability Ph.D., Massachusetts 858-862, May-June 1997. of new devices and circuits. His main Institute of Technology. J. S. Wey, J. Goldhar, G. L. Burdge, emphasis has been in developing new Optical Society of “Active Harmonic Modelocking of and physics-based mathematical approaches America Fellow. Erbium Fiber Laser with Intracavity to semiconductor device simulation, Fabry-Perot Filters,” J. of Lightwave Tech., where he has made contributions to the vol. 15, no. 7, pp. 1171-1178, July 1997. Monte Carlo, Hydrodynamic, and Research Interests J. J. Chen, F. S. Choa, P. S. Cho, J. S. Numerical Boltzmann techniques. He is Dr. Goldhar is conducting research in Wey, J. Goldhar D. L. Butler and G. L. one of the originators of the Spherical the field of laser-matter interactions and Burdge, “The Gain Decompression Harmonic/Legendre Polynomial nonlinear optics, as well as the develop- Effect and its Applications to Very Fast approach to sub-micron device analysis, ment of opto-electronic devices such as Wavelength Conversions,” IEEE which has application in predicting hot- Pockels’ cells for inertial confinement Photonics Tech. Lett., vol. 9, no. 6, pp. electron effects in semiconductors. He is fusion laser system. Recently, he 755-757, June 1997. also working on Ion Implantation for became involved in research on the sub-micron device fabrication, and is applications of nonlinear optics to in- D. Mahgerefteh, P. Cho, J. Goldhar and developing models for predicting fiber signal processing at very high data G. L. Burdge, “Elimination of Pattern electro-migration in integrated circuits. rates. He is working on new techniques Dependence in a Semiconductor- He is very active in undergraduate and for optical data generation, regenera- Optical-Amplifier Wavelength Con- graduate education — where he has tion, clock recovery and header recogni- verter Using a Fiber Grating,” 11th Intl. developed new courses, and is helping tion. He is also involved in research on Conf. on Integrated Optics and Optical Fibre to revise the curriculum to satisfy the optical techniques for the generation Communications 23rd European Conf. on needs of modern engineering students. and detection of terahertz radiation. Optical Comm., IOOC-ECOC’97 (Conf. Pub. no. 448) vol. 2, pp. 273-6, Professional Service Professional Service Edinburgh, UK, September 1997. Semiconductor Industry Association Topical Ed., Applied Optics, Lasers and (SIA) roadmap meeting, invited partici- Photonics Section. H.-Y. Yu, D. Mahgerefteh, P. Cho, J. pant. Organized a short course with Goldhar, and G. L. Burdge, “Imrpoved Purdue, University of Texas-Austin, University Service Frequency Response of a Semiconduc- University of Maryland and University Elecrtrical Engineering: General tor-Optical-Amplifier Wavelength of Illinois, titled “Hierarchical Device Academic Affairs Committee; Distin- Converter Using a Fiber Bragg Graing,” Simulation via a Web-Based Simulation guished Lecturer Series Coordinator. 1997 Digest of the IEEE/LEOS Summer Laboratory.” Recent Publications Topical Meetings: Vertical-Cavity Lasers/ J. S. Wey, D. L. Butler, N. W. Rush, G. Technologies for a Global Information

60 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology University Service Romel Del Rosario Gomez function of lateral position. The mag- Electrical Enginereing : Dept. APT netics group has several programs Committee; Salary Committee; Director Assistant Professor, aimed at enhancing the utility of the of Undesignated Degree Program in Ph.D., University of technique. Among these are the devel- Engineering; Liaison between EE Dept. Maryland. opment of methods for quantifying the and Motorola for their University instrument response, based upon the Support Program. Gemstone Planning equivalence of electrostatic and mag- and Executive Committees; ISR netic forces. Likewise, MFM probes are Education Committee; Eta Kappa Nu being refined with the goal of improv- Faculty Advisor. ing the resolution and sensitivity Research Interests performance by at least an order of Recent Publications Prof. Gomez’ current research interests magnitude from present levels. Finally, C.-C. Shen, J. Murguia, N. Goldsman, are in the general areas of surface magnetic proximal probe microscopes M. Peckerar, J. Melngailis and D. magnetism and scanned probe instru- that operate under ultra-high vacuum Antoniadis, “Use of Focused-Ion-Beam mentation, with emphasis on magnetic conditions, compatible with industrial and Modeling to Optimize Submicron recording and magnetic sensing. The device fabrication lines, are being MOSFET Characteristics,” IEEE Trans. general research theme is to understand designed and built. The approach is to on Elec. Dev., vol. 45, pp. 453-459, 1998. the largely unexplored regime of adopt “magnetic force scanning tunnel- W. Wang, C. Chang, I. Berry, D. Ma, M. magnetism at the nanoscale regime by ing microscopy” for UHV application— Peckerar, N. Goldsman and J. Meln- developing and using local proximal a technique that the group developed in gailis, “Self-Aligned Subchannel Implant techniques such as the scanning tunnel- recent years for ambient operation. Complemetary Metal-Oxide Semicon- ing and force microscopes for imaging More information can be found at ductor Devices Fabrication,” J. of magnetic microstructures. URL: http://www.ee.umd.edu/ Vacuum Sci. Tech., vol. B15(16), pp. 2816- An area Prof. Gomez is interested in is rdgomez. 2820, 1997. “Nanostructured Materials and Record- Professional Service C.-H. Chang, C.-K. Lin, W. Liang, N. ing Media.” Nanostructured magnetic Publications Chair, Intermag 2000 Goldsman, I. D. Mayergoyz, P. Oldiges materials, such as ferromagnetic single Conf.; IEEE Trans. on Magnetics Ed. and J. Melngailis, “The Spherical crystals, alloys and metal oxides are Board; Session Chair, Joint MMM- Harmonic Method: Corroboration with regarded as important candidates for Intermag Conference ‘98; Program Monte Carlo and Experiment,” Proc. use in the next generation of magnetic Committee Member and Ed., Intermag Intl. Conf. on Simulation of Semiconductor data storage systems. His magnetics ’97 Conference; Treasurer, Philippine Processes and Devices, pp. 225-228, 1997. group is interested in establishing the micromagnetic properties of these American Association of Scientists and W. Wang, C. Chang, M. Peckerar, I. materials, particularly the distribution Engineers. Berry, N. Goldsman and J. Melngailis, of local coercivity, thermal stability, University Service “Self-Aligned Sub-Channel Implant domain wall dynamics, switching Founding Advisor, Harmonics Coali- CMOS Devices Fabrication,” Proc. 41st characteristics and magneto-transport tion; Campus Senate Student Affairs Intl. Conf. on Electron, Ion and Photon effects — in order to assess the design Committee; Graduate Studies and Beam Tech., pp. 120-121, May 1997. parameters in fabricating future high Research Committee; General Aca- M. S. Krishnan, N. Goldsman and A. performance magnetic devices. Con- demic Affairs Committee; Advisor, Christou, “Numerical Simulation of currently, microscopic studies of IEEE student association. AlGaN/GaN Heterojunction Field conventional recording media are also Recent Publications Effect Transistors,” Abstracts of Materials underway, and these are geared towards Research Society Fall 1997 Symposium, p. erasure processes, overwrite edge C. Kwon, S.E. Lofland, S.M. Bhagat, M. 380, Boston, Mass., 1997. effects, tracking misregistration and Rajeswari, T. Venkatesan, R.Ramesh, effects at increased data densities. A.R. Kratz and R.D. Gomez, “Stress- C. H. Chang, C.-K. Lin, N. Goldsman Induced Effects on Epitaxially Grown and I. D. Mayergoyz, “Spherical Another area he is interested in is LSMO Metal Oxide Thin Films,” J. of Harmonic Analysis of a 0.05µm Base “Magnetic Force Microscopy: Quantifi- Mag. and Magn. Matl. vol. 172, pp. 229- BJT: Monte Carlo-Type Results But a cation and Instrumentation Develop- 233, Aug. 1997. Thousand Times Faster,” 5th Intl. ment.” Magnetic force microscopy Workshop on Computational Electronics, (MFM) has emerged as one of the most S. Zhu, R.J. Gambino, M.H. Conf. Pgm., p. ThP8, May 1997. useful techniques in investigating Rafailovich, J. Sokolov, S.A. Schwarz micromagnetism. In this method, the and R.D. Gomez, “Microscopic Mag- images are acquired by measuring netic Characterization of Submicron changes in the cantilever response, such Cobalt Islands Prepared Using Self- as phase or frequency shift, as a Assembled Polymer Masking Tech-

University of Maryland · Department of Electrical Engineering 61 nique,” IEEE Trans. on Magn., vol. 33, at each successive stage of a multi-stage B. Levush and and W. J. Chen, “Opera- pp. 3022-3024, Sept. 1997. gyrotron circuit; harmonic multiplica- tion of a Highly Overmoded, Har- tion reduces the magnetic field in the monic-Multiplying, Wideband Gyrotron R. Madabhushi, R.D. Gomez, E.R. gyrotron and thus avoids the require- Amplifier,” Phys. Rev. Lett., vol. 79, pp. Burke, I.D. Mayergoyz, and J. Orloff, ment of using superconducting magnets. 515-518, 1997. “Inter-track Interference Studies Using Employing multi-stage, depressed MFM Image Reconstruction,” IEEE K. R. Chu, H. Guo and V. L. Granat- collectors to enhance gyrotron effi- Trans. on Magn., vol. 33, pp. 4053-4055, stein, “Theory of the Harmonic Multi- ciency is also being investigated. Studies Sept. 1997. plying Gyrotron Traveling Wave of plasma-filled backward-wave- Amplifier,” Phys. Rev. Lett., vol. 78, pp. C. Kwon, S.E. Lofland, S.M. Bhagat, M. oscillators and traveling-wave-amplifiers 4661-4664, 1997. Rajeswari, T. Venkatesan, R.Ramesh, are being pursued on a path to develop- A.R. Kratz and R.D. Gomez, “Surface ing more compact high-power-micro- A. Singh, D. S. Weile, S. Rajapatirana Magnetization of (La0.7Sr0.8)MnO3 wave tubes without the need of magnets and V. L. Granatstein, “Integrated Thin Films,” IEEE Trans. on Magn., vol. for electron beam focusing. Finally, the Design of Depressed Collectors for 33, pp. 3964-3966, Sept. 1997. basic phenomenology of microwave Gyrotrons”, IEEE Trans. Plasma Sci., vol. 25, pp. 480-491, 1997. R. D. Gomez, A. O. Pak, A. J. Ander- sintering of ceramics is being studied son, E. R. Burke, A. J. Leyendecker and with the aim not only of improving G. S. Nusinovich, G. P. Saraph and V. I. D. Mayergoyz, “Quantification of sintering technology, but also of L. Granatstein, “Scaling Law for Magnetic Force Microscopy Images producing ceramics with superior Ballistic Bunching in Multicavity Using Combined Electrostatic and mechanical and electrical properties. Harmonic Gyroklystrons,” Phys. Magnetostatic Imaging,” 9th Joint Professional Service Rev.Lett., vol. 78, pp. 1815-1818, 1997. MMM-Intermag Conference, Journal of Chair, Organizing Committee 8th H. P. Freund and V. L. Granatstein, Applied Phys., vol. 83, pp. 6226-6228, Workshop on Advanced Accelerator “Long Wavelength Free Electron Lasers 1998. Concepts; Chair, Intl. Advisory Com- in 1996,” Nucl. Instrum. Meth. Phys. Res., mittee, 22nd Intl. Conference on vol. A393, pp. 9-12, 1997. Victor L. Granatstein Infrared and Millimeter Waves; Chair, Intl. Advisory Committee, Workshop G. P. Sarpah, V. L. Granatstein and W. Professor, on Cyclotron-Resonance Masers and Lawson, “Design of a Single-Stage Ph.D., Columbia Gyrotrons; Chair, Human Rights Depressed Collector for High-Power, University. Subcommittee of the IEEE Plasma Pulsed Gyroklystron Amplifiers,” IEEE IEEE Fellow; Science and Application Committee; Trans. Electron Devices, vol. 45, pp. 986- American Physical IEEE Nuclear and Plasma Sciences 990, 1998. Society Fellow; Society Administrative Committee; J. M. Taccetti, R. H. Jackson, H. P. Director, IPR; Joint Guest Ed., Proc. IEEE on New Vistas in Freund, D. E. Pershing and V. L. Appointment with IPR. Vacuum Electronics; Special Reviewer, Granatstein, “The Wideband Input Research Interests Council for Intl. Exchange of Scholars Coupler for a Low Voltage, Ka-band, Dr. Granatstein’s research interests are (Fulbright Senior Scholar Awards); Co-axial Ubitron Amplifier,” Nucl. in the area of relativistic microwave Editorial Board, Particle Accelerators. Instrum. Meth. Phys. Res., vol. A393, part electronics, especially gyrotrons and University Service II, pp. 79-80. free electron masers with application to Director, Institute of Plasma Research; W. Lawson, J. Anderson, J. P. Calame, J. plasma heating in magnetic fusion Chair of APT Committee, Clark School Cheng, M. Castle, V. L. Granatstein, B. energy (MFE) research, advanced of Engineering. Electrical Engineering: Hogan, M. and G. P. Saraph, “High particle accelerators for high energy Chair, Human Relations and Welfare Power Gyroklystron Development for physics (HEP) research, microwave Committee; Graduate Studies and Advanced Accelerator Applications,” processing of materials, millimeter-wave Research Committee; Salary Commit- Proc. 7th Workshop on Advanced Accelerator radar systems, and unconventional tee. Concepts, pp. 865-873, Lake Tahoe, CA, electronics warfare (EW). Recent Publications October 1998. His current research interests are V. L. Granatstein, B. Levush, B. Danly J. M. Taccetti, R. H. Jackson, H. P. focused on developing gyrotron and R. K. Parker, “A Quarter Century Fruend, D. E. Pershing and V. L. amplifiers and oscillators which operate of Gyrotron Research and Develop- Granatsein, “Progress on a Ka-Band efficiently at harmonics of the electron ment,” IEEE Trans. Plasma Sci., vol. 25, CHI Wiggler Ubitron Amplifier,” Digest cyclotron frequency and are of particu- pp. 1322-1335, 1997. of the 22nd Intl. Conf. on Infrared and lar interest in the HEP, radar, and EW H. Guo, V. L. Granatstein, S. H. Chen, Millimeter Waves, pp.7-8, Wintergreen, applications. The approach being VA, July 1997. investigated is harmonic multiplication J. Rodgers, G. Nusinovich, M. Walter,

62 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology A. Singh, R. Rajapatirana and V. L. James A. Hendler Science Advisory Board; Chair, ACM Granatstein, “A New Algorithm for Awards Doctoral Dissertation Prize Tracing Back-Scattered Electrons,” ibid., Affiliate Associate Committee; AAAS Science Journalism pp. 190-191. Professor, Awards Screening Committee; Program Ph.D., Brown Chair, National Conf. on Artificial R. L. Ives, Y. Mizuhara, R. Schumacher, University. Intelligence (AAAI '99); Dagstuhl A. Singh, R. Rajapatirana and V. L. Joint Appointments Seminar Co-chair, Dagstuhl Seminar on Granatstein, “Design of a Multi-Stage with Computer Control of Search in AI Planning; Intl. Depressed Collector for a 1 MW CW Science, ISR, and Conference on Knowledge Representa- Gyrotron,” ibid., pp. 196-197. UMIACS. tion (KR96) Program Committee; Intl. W. Lawson, J. P. Calame, M. Castle, J. Research Interests Conf. on Case-based Reasoning Pro- Cheng, V. L. Granatsein, B. Hogan, M. gram Committee; National Conference Information technology puts new Reiser and G. P. Saraph, “Operation of on AI (AAAI) Senior Program Commit- demands on artificial intelligence (AI) a Two-and Three-Cavity First Harmonic tee; Executive Council, AI Planning technologies. Dr. Hendler’s research Coaxial X-Band Gyroklystrons,” ibid., Systems Conference. pp. 237-238. focuses on providing supporting technologies and working prototypes University Service G. S. Nusinovich, G. P. Saraph and V. for using AI in smarter search engines, Intl. Affairs Committee; Gemstone L. Granatstein, “Scaling Laws for agent-based systems, and scientific and Advisory Committee; Gemstone Ballistic Bunching in Multicavity medical research. These sorts of Mentor. Gyroklystrons,” ibid., pp. 239-240. applications require scaling AI way Recent Publications beyond current bounds, and Dr. H. Guo, S. H. Chen, V. L. Granatstein, J. A. Hendler, K. Erol and D. Nau, Hendler’s research accordingly concen- J. Rodgers, G. Nusinovich, B. Levush, “Complexity Results for Hierarchical trates on on the building and efficient M. Walter and W. J. Chen, “A High Task-Network Planning,” Annals of use of very large knowledge bases Performance, Frequency Doubling, Mathematics and Artificial Intelligence, vol. (using high performance computing Inverted Gyrotwystron,” ibid., pp. 285- 18, no. 1, 1997. 286. techniques), the integration of knowl- edge- and data-based techniques for S. Luke and J. A. Hendler, “Web G. Nusinovich, M. Walter, V. L. creating hybrids with the inferencing Agents that Work,” IEEE Multimedia, Granatstein, “Theory of the Inverted capabilities of AI coupled with the vol. 4, no. 3, 1997. Gyrotwystron,” ibid., pp. 287-288. memory-management and ease-of-use O. Seeliger and J. A. Hendler, “Super- K. Mininami, K. Tanaka, X. D. Zheng, features of DBMS systems, the creation venient Hierarchies of Behaviors in Y. Carmel, A. Vlasov and V. L. Granat- of very large case-based reasoners, and Robotics,” J. of Experimental and Theoreti- stein, “Oscillation of TE11 Mode from a the exploration of “situated planning” cal AI , vol. 9, Nos. 2/3, 1997. High Power Backward Wave Oscilla- systems as the basis of intelligent agent tor,” ibid., pp. 311-312. systems. J. A. Hendler, V. Manikonda and P. S. Krishnaprasad “Languages, Behaviors, Some of the projects Dr. Hendler is Robert O. Harger Hybrid Architectures and Motion working on include: High Performance Control,” Essays in Mathematical Control Case-Based Planning; Hierarchical Task Theory (in honor of the 60th birthday of Professor Emeritus, Network Planning: Formalization and Ph.D., University of Michigan. Roger Brockett), John Baillieul and Jan Analysis; Hybrid Symbolic/ C. Willems, eds., Springer-Verlag. IEEE Fellow Connectionist Research; Intelligent Research Interests Tutoring System for Arabic and Span- A. Wilson and J. Hendler, “Conncert: Dr. Harger’s research, scholarly, and ish; Parallel Knowledge Representation A Modular Approach to the Design of teaching interests are in the general (PARKA system); and Real-Time A.I. Connectionist Archtectures,” Progress in areas of communication and digital Systems. Neural Network, C. Wilson, ed., Ablex, NJ, 1997. signal and image processing. He Professional Service recently published an introductory book Program Manager, Software and K. Stoffel and J. A. Hendler, “Parka on on digital signal processing, written in Systems Program Mathematical and MIMD-Supercomputers,” Parallel an interactive, high-level mathematical Geosciences Directorate, US Air Force Processing in AI, J. Geller, ed., 1997. programming language. He is presently Research Laboratory, Air Force Office K. Stoffel, J. Saltz, J. A. Hendler, J. using the book in a computer classroom of Scientific Research; Special Task Dick, W. Merz and R. Miller, “Semantic and introducing other innovative Force on Ballistic Missile C4I, POET Indexing for Complex Patient Group- teaching methods. study for Ballistic Missile Defense ing,” Proc. Annual Conf. of the American Organization; Member, Defense Science Medical Informatics Association, Oct. 1997. Study Group, Arpa/IDA; US Air Force

University of Maryland · Department of Electrical Engineering 63 L. Nunes de Barros, R. Benjamins and J. Ping-Tong Ho Jeffrey K. Hollingsworth A. Hendler, “Par-kap: A Knowledge Acquisition Tool for Building Practical Professor, Affiliate Assistant Planning Systems,” Proc. IJCAI-97, Sc.D., Massachusetts Professor, Nagoya, Japan, 1997, reprinted in Proc. Institute of Technology. Ph.D., Computer Ninth Dutch Conf. on Artificial Intelligence Sciences, University of (NAIC-97), K. van Marcke, W. Wisconsin. Daelemans, eds., University of Joint Appointememt Antwerp, Belgium, November, 1997. with Computer Science. K. Stoffel, M. Taylor, and J. A. Hendler, Research Interests “Efficient Management of Very Large Research Interests Dr. Ho’s research interests are in lasers Ontologies,” Proc. AAAI-97, Providence, Dr. Hollingsworths research seeks to and optics, microwaves, and semicon- RI, 1997. exploit runtime observations of the ductor devices. He is working on spatial behavior of parallel and distributed D. Rager, J. A. Hendler, and A. light modulators, laser rangers, optical systems to improve application and Mulvehill, “ForMAT and Parka: A filters, and standards for optical near system performance. Although static Technology Integration Experiment and field microscopy. He and a student, analysis can provide significant insights Beyond,” Proc. Intl. Conf. on Case-Based working with a government laboratory, into how applications will behave when Reasoning, Providence, RI, 1997. are designing and fabricating an executed, programs today are so optically addressable spatial light B. Kettler, K. Sanders and J. A. complex that to fully understand their detector array which uses semiconduc- Hendler, “The Case for Graph-Struc- performance, they must be executed tor detectors to control liquid crystal tured Representations,” Proc. Intl Conf. and measured. modulators. They have achieved record on Case-Based Reasoning, Providence, RI, low dark currents and capacitances in To help programmer makes these 1997. the semiconductor detectors, crucial tuning choices, Dr. Hollingsworth is S. Luke, J. A. Hendler, L. Spector and requirements for the modulator design, developing techniques to evaluate the D. Rager, “Ontology-Based Web and have seen optical-optical modula- potential of different tuning options to Agents,” Proc. Agents 1997, San Mateo, tion. A simple, accurate, absolute ranger improve application execution before CA. 1997. is being developed in collaborating with the programmer changes a single line of code. One example of this technique is J. A. Hendler, P. Emmerman and V. S. a local company. The ranger uses a online Critical Path Zeroing which lets a Subrahmanian, “CATS: An Architec- variation of the time-of-flight technique, programmer consider the potential ture for Scalable Intelligent Agent resulting in high accuracy (0.1 mm over impact of tuning specific procedures on Applications,” Bar-Ilan Symposium on the 20 meters) with simple, low-speed the overall performance of the compu- Foundations of Artificial Intelligence, Israel, electronics. A new project is underway tation. A second technique, called load 1997. to design and fabricate wavelength-scale optical filters for applications in wave- balancing factor, evaluates the potential J. A. Hendler, “Developing Intelligent length-divisional-multiplexed communi- of moving work between processors Agents—The future of AI Planning cation systems. A calibration standard instead of reducing the amount of work Systems,” invited talk, 3rd Brazilian for near field optical microscopy is to be done. Symposium on Intelligent Automation, being developed together with NIST. To facilitate the creation of runtime Vitoria, Brazil, Sept., 1997. University Service measurement and adaptation tools, Dr. Electrical Engineering: Newsletter Hollingsworth has developed dyninst, a Coordinator; Coordinator for Visiting C++ class library to permit platform Scholars. independent runtime executable editing. Unlike previous binary re- Recent Publications writing tools, dyninst permits programs Y. C. Liu, P. R. Barbier, F. G. Johnson, to be changed during program execu- P.-T. Ho and G. L. Burdge, “InGaAs tion. Runtime modification of program Photodiodes for Infrared-Sensitive executables is useful for performance Optically Addressed Spatial Light measurement, efficient data Modulators,” Optical Society of America, breakpoints, performance steering, and Spec. Topics, vol. 14, pp. 138-140, 1997. architecture studies. In the Harmony project, Dr. Hollingsworth is using observations of the runtime behavior of parallel and distributed systems to move from

64 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology measuring bottlenecks and predicting The Grid: The Future of High-Performance ers and optoelectronic devices for tuning options to automatically adapt- Distributed Computing, K. Kesselman and communication and computer net- ing a running system to try to improve I. Foster, ed., Morgan-Kaufmann, 1998. works. it performance.Applications and system A. Whaeed, D. T. Rover, and J. Professional Service software often contain a rich set of Hollingsworth, “Modeling and Evaluat- Session Chair, Intl. Semiconductor parameters that can influence perfor- ing Design Alternatives for an On-Line Devices Research Symposium mance. However, the most appropriate Instrumentation System: A Case (ISDRS’97). algorithm or configuration is dependent Study,” IEEE Trans. on Software Engi- on information available only at University Service neering, 1998. runtime. In this area, he is exploring Tenure and Promotions Committee; how performance measurement can be J. K. Hollingsworth, E. Guven, and C. College of Engineering Council. Akinlar, “Benchmarking a Network of used to adapt programs during execu- Recent Publications tion to create applications that adapt PCs Running Parallel Applications,” A. A. Iliadis, S. N. Adronescu, K. and change during their execution to IEEE Intl. Performance, Computing, and Edinger, J. Orloff, V. Talyansky, R. D. improve their performance. Communications Conf., pp. 1-7, Tempe, Arizona, Feb. 1998. Vispute, R. P. Sharma, T. Venkatesan, Finally, Dr. Hollingsworth has been M. C. Wood and K. Jones, “Power working in the area of configuration J. K. Hollingsworth, B. P. Miller, M. J. Semiconductor Materials and Devices,” management of compiled software R. Gongalves, O. Naim, Z. Xu and L. edited by S. J. Pearton, R. J. Shul, E. artifacts (programs, libraries, icons, Zheng “MDL: A Language and Com- Wolfgang, F. Ren and S. Tenconi, MRS, etc.). Managing software objects is a piler for Dynamic Program Instrumenta- vol. 483, 1998. growing problem as software reuse tion,” Intl. Conf. on Parallel Architectures V. Talyansky, R. D. Vispute, R. P. becomes more prevalent. For an and Compilation Techniques, pp. 201-212, Sharma, S. Choopun, M. Downes, T. application composed from reused San Francisco, CA, Nov. 1997. Venkatesan, S. N. Andronescu, A. A. libraries and modules to function J. K. Hollingsworth and E. L. Miller, Iliadis, Y. X. Li, L. G. Salamanca-Riba, correctly, all of the required files must “Using Content-Derived Names for M. C. Wood, R. T. Lareau and K. A. be available and be the correct version. Configuration Management,” ACM Jones, “Power Semiconductor Materials We have developed a simple scheme to Symposium on Software Reusability, pp. and Devices,” edited by S. J. Pearton, R. address this problem: content-derived 104-109, Boston, MA, May 1997. J. Shul, E. Wolfgang, F. Ren and S. names (CDNs). A content-derived Tenconi, MRS, vol. 483, 1998. name is a unique identifier that can Agis Iliadis automatically be computed using digital V. Talyansky, R. D. Vispute, R. P. signatures. By using content-derived Associate Professor, Sharma, S. Choopun, M. Downes, T. names, de velopers can ensure that only Ph.D., Manchester Venkatesan, A. A. Iliadis, M. C. Wood, those software components that have University (UMIST), R. T. Lareau and K. A. Jones, been tested together are permitted to United Kingdom. “Expitaxial Oxide Thin Films III,” C. run together. The system permits Foster, J. S. Speck, D. Schlom, C. B. multiple versions of shared components Eom and M. E. Hawley, eds., MRS, vol. to co-exist on a single system, and be 474, p. 119, 1997. automatically deleted when all applica- Research Interests R. D. Vispute, V. Talyansky, R. P. tions that depend on them have been Sharma, S. Choopun, M. Downes, T. upgraded (or deleted). Dr. Iliadis’ research interests are in the areas of Molecular Beam Epitaxial Venkatesan, K. A. Jones, A. A. Iliadis, Professional Service (MBE) growth, microelectronic devices M. A. Khan and J. W. Yang, “ “Growth Program Committee Co-Chair, 1998 and monolithic integration of elemental of Expitaxial GaN Films by Pulsed ACM SIGMETRICS Symposium on and compound semiconductors with Laser Deposition,” Appl. Phys. Lett., vol. Parallel and Distributed Tools; 1998 applications in low power communica- 71, no. 1, pp. 102-104, 1997. IEEE Real-Time Systems Symposium tion modules, microwave modules, and R. D. Vispute, V. Talyansky, S. Program Committee. microactuators. Choopun, M. Downes, R. P., Sharma, T. University Service His current research is focused on Vekatesan, M. C Wood, R. T. Lareau, K. Chair, CS Department Computer developing application specific devices, A. Jones and A. A. Iliadis, “Growth of Facilities Committee; 1998 UMD High high performance MODFET’s and Expitaxial ZnO Films on Sapphire by School Programming Contest Judge. heterojunction bipolar transistors, based Pulsed Laser Deposition,” Appl. Phys. Lett., vol. 70, p. 2735, 1997. Recent Publications on AlGaAs/GaAs and InGaAs/AlInAs/ J. K. Hollingwsorth, B. P. Miller, InP, high frequency SOI MOSFET’s A. A. Iliadis, S. Andronescu, V. “Instrumentation and Measurement,” and the monolithic integration of MOS Talyansky, K. Edinger, J. Orloff, M. compatible Si and SOI based transceiv-

University of Maryland · Department of Electrical Engineering 65 Woods and K. A. Jones, “Focused Ion study arbitrarily complex hardware Recent Publications Beam Assisted Ohmic Metallizations to architectures that might be too expen- B. L Jacob and T. N. Mudge, “Software- p-SiC,” Proc. 24th Intl. Symp. on Com- sive or difficult to build in silicon. Managed Address Translation,” Proc. pound Semiconductors (ISCS ’97), San His present research projects at the Third Intl. Symposium on High Performance Diego, Calif., Sept. 1997. University of Maryland focus on Computer Architecture (HPCA-3), pp. 156- A. A. Iliadis, S. N. Andronescu, K. embedded systems and mainstream 167, San Antonio TX, February 1997. Edinger, J. Orloff, V. Talyansky, R. D. computer architecture. The more B. L. Jacob, P. M. Chen, S. R. Vispute, R. P. Sharma, T. Venkatesan, traditional computer architecture Silverman, and T. N Mudge, “A Com- M. C. Wood and K. A. Jones, “PLD projects include the analysis of DRAM ment on ‘An Analytical Model for Epitaxial TiN and Pt Ohmic Contacts to architectures for improved memory- Designing Memory Hierarchies’,” IEEE p-type 6H-SiC Using Focused Ion Beam system performance, which is one of the Trans. on Computers, vol. 46, no. 10, p. Surface Modification,” Proc. MRS ‘97 first in-depth comparisons of different 1151, October 1997. Fall Meeting, Symp. E, Boston, Mass., DRAM technologies. This research 1997. aims to reduce the gap between proces- sor and memory performance. He is Joseph F. JáJá V. Talyansky, R. D. Vispute, R. P. also developing interrupt mechanisms Sharma, S. Choopun, M. Downes, T. that better suit the behavior of high- Professor, Venkatesan, S. N. Andronescu, A. A. performance out-of-order superscalar Ph.D., Harvard Iliadis, Y. X. Li, L. G. Salamanca-Riba, processors, which have relatively University. M. C. Wood, R. T. Lareau, and K. A. complex mechanisms that undo the IEEE Fellow; Director, Jones, “PLD of TiN Expitaxial Contacts effects of dynamic scheduling in the rare UMIACS; Joint on 6H-SiC and GaN,” Proc. MRS ‘97 case of an interrupt. His memory- Appointments with Fall Mtg., Symp. E, Boston, Mass., 1997. management research looks into the Computer Science and A. A. Iliadis and A. Caviglia, “Self- simplification of memory-management ISR. Heating in SOI MOSFETs and the hardware to obtain a more standard, Research Interests Extraction of Isothermal Characteristics software-oriented approach to virtual Dr. JáJá’s research interests are in the from Small-Signal Measurements,” Proc. memory that provides better perfor- general area of parallel and distributed Intl. Semiconductor Devices Research mance and more flexibility than computing, with a particular emphasis Symposium (ISDRS ‘97), Charlottesville, hardware-oriented designs. on distributed systems interconnected Va., 1997. He is also working in the area of by high-speed networks. His current Bruce Jacob embedded-systems computer architec- research activities are centered around ture; these embedded systems projects three major efforts. The first is related to a Grand Challenge Project that aims Assistant Professor, include the development of real-time mechanisms at the microarchitecture at developing high-performance Ph.D., University of computing technology for the extraction Michigan. level and the re-design of a real-time operating system to take advantage of of land cover information at the global the novel mechanisms. This work in level using multi-resolution, multi- architectures for real-time processing spectral, and multi-temporal remote should speed up real-time systems sensing imagery. This project empha- significantly and allow systems with sizes object oriented programming and Research Interests even moderate processing power to parallel I/O of large-scale images and maps, as well as new parallel algorithms Dr. Jacob's research interests are in the make tight deadline requirements. He is and systems for image processing and areas of computer architecture, cache also developing a CAD tool to auto- spatial data. and memory-system design, embedded mate the exploration of core-based systems, and memory management. The ASIP designs (Application-Specific The second effort is based on the objectives of his research are to build Instruction-set Processors). This tool development of models and communi- hardware/software systems that im- will allow designers of embedded/DSP cation primitives that form the basis for prove the performance, cost, real-time systems to quickly customize commer- writing applications code capable of behavior, and/or power consumption of cial core-based ASIP offerings to the making effective use of the available processor designs relative to existing needs of their applications. resources, and portable across various designs. The techniques he uses include University Service platforms. In particular, the increase in system modeling and simulation, in Electrical Engineering Faculty Search the number of processors available will which one builds a computer program Committee result in a proportional speed-up in the that emulates the behavior of the system execution time. This methodology has under observation. This allows one to been implemented for a variety of

66 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology specific applications — including image J. F. JáJá and D. Helman, “Sorting on K. Thitikamol and Pete Keleher, “Multi- processing, sorting, and list processing. Clusters of SMPs,” Intl. Parallel Threading and Remote Latency in Processing Symp., April 1998. Software DSMs,”17th Intl. Conf. on Finally, he is leading an effort to Distributed Computing Systems, May 1997. develop and integrate a computing Peter Keleher infrastructure to support efficient and Perinkulam S. Krishnaprasad seamless access, discovery, generation, Affiliate Assistant cross-correlation, and visualization of Professor, Professor, large scale earth system science data.. Ph.D., Rice University. Ph.D., Harvard Professional Service NSF CAREER Award; University. Subject Area Editor on Parallel Algo- Joint Appointments IEEE Fellow; Joint rithms, J. of Parallel and Distributed with Computer Science Appointment with ISR. Computing, Assoc. Ed., IEEE Trans. on and UMIACS. Parallel and Distributed Systems; Sympo- sium on Parallel Algorithms and Research Interests Architectures Program Committee; Keleher's research interests lie primarily Research Interests Vice-Chair for Algorithms and Applica- in the field of distributed computing. As a part of the NSF-ERC proposal tions, Intl. Conf. on Parallel Processing, The two primary thrusts of his current effort, Dr. Krishnaprasad developed a Program Committee; Intl. Parallel work are in distributed shared memory program of research in Intelligent Processing Symposium Program and (DSM) and in global resource manage- Processing of Materials (IPM), an area Steering Committees; IASTED Intl. ment in large-scale systems. The DSM viewed as being of strategic importance. Conf. on Parallel and Distributed work is aimed at finding the limits to Specifically, the proposed effort Computing and Networks Program high performance of software DSMs. includes model-based control of Committee; Intl. Conf. on High This encompasses communication chemical vapor deposition, and a Performance Computing Program analysis, assessing the impact of proto- project on electro-mechanical motion Committee. col choices, and identifying environ- control prototyping. Key aspects of mental conditions and application these efforts include multi-university University Service domains for which software DSM collaboration (Harvard, North Carolina Director, UMIACS; Indirect Cost makes sense. State U.) and industry collaboration. He Committee; Graduate Council Research has initiated new real-time control Committee. The resource management work encompasses a large number of issues experiments in the Intelligent Servo- Recent Publications involved in executing parallel applica- Systems Laboratory, specifically related J. F. JáJá, “Parallel Algorithms,” Encyclo- tions in large-scale, non-dedicated, to smart actuators and sensors. pedia of Distributed Computing, P. possibly heterogeneous environments. University Service Dasgupta and J. Urban eds., Kluwer, Our current focus is on assessing the Electrical Engineering: Committee on 1998. impact of global versus local informa- Graduate Studies and Research; Ad- H. Fallah-Adl J. F. JáJá and S. Liang, tion on scheduling decisions, designing Hoc Committee on Post Tenure Review “Fast Algorithms for Estimating Aerosol flexible application/system interfaces, of Faculty. ISR: Executive Committee; Optical Depth and Correcting Thematic and on system-directed application APT Committee; Salary Committee. adaptation. Mapper Imagery,” J. of Supercomputing, Recent Publications vol. 10, no. 4, pp. 315-329, 1997. Recent Publications P. S. Krishnaprsad, “Motion Control S. Liang, H. Fallah-Adl, J. F. JáJá, S. H. Han, C.-W. Tseng, and P. Keleher, and Coupled Oscillators,” Motion, Kalluri, Y. Kaufman, and J. Townshend, “Reducing Synchronization Overhead Control and Geometry: Proceedings of a “Development of an Operational for Compiler-Parallelized Codes on Symposium, issued by Board on Math- Atmospheric Correction Algorithm for Software DSMs,” Languages and Compil- ematical Sciences, Commission on TM Imagery,” J. of Geophysical Research, ers for Parallel Computing, Tenth Intl. Physical Sciences, Mathematics, and vol. 102, no. D14, 117, pp. 173-17, 186, Workshop, (Z. Li et al., eds.), Lecture Notes Applications, of the National Research July 1997. in Computer Science, Springer-Verlag, Council, National Academy of Sciences 1997. Press, pp 52-65, Washington D.C. J. F. JáJá, S. Kalluri, S. Liang and J. (1997). Townshend, “Retrieval of Bidirectional H. Han, C.-W. Tseng, and P. Keleher, Reflectance Distribution Function “Reducing Synchronization Overhead P. S. Krishnaprasad, V. Manikonda and (BRDF) at Continental Scale from for Compiler-Parallelized Codes on J. Hendler, “Languages, Behaviors, AVHRR Data Using High Performance Software DSMs,” Workshop on Languages Hybrid Architectures and Motion Computing,” IGARSS Symposium, with and Compilers for Parallel Computing Control,” in Essays in Mathematical Z. Zhang, et al., August 1997. (LCPC'97), August 1997. Control Theory, J. Baillieul and J. C.

University of Maryland · Department of Electrical Engineering 67 Willems, eds., Springer Verlag, New amplifier studies are intended to lead to Chi H. Lee York, 31 pages. (1998). devices with output powers above 100 MW for 1 microsecond, with gains and Professor, P. S. Krishnaprsad and V. Manikonda, efficiencies exceeding 50 dB and 40%, Ph.D., Harvard “Controllability of Lie-Poisson Reduced respectively. The targeted frequency University. Dynamics’’ Proc. 1997 American Control range is 8-30 GHz. Such devices will IEEE Fellow; Optical Conf., American Automatic Control make suitable RF drivers for the next Society of America Council, pp. 2203-2207, Philadelphia, generation of linear colliders. The goal Fellow; Photonics Pa., 1997. of the hybrid amplifier studies is to Society of Chinese- P. S. Krishnaprasad and H. Struemper, produce high efficiency, low magnetic Americans Fellow. “On Approximate Inversion and field, low voltage, and narrow and Research Interests Feedback Stabilization for Systems on broadband amplifiers for a variety of Dr. Lee’s research interests are in the Matrix Lie Groups,” Proc. 1997 Ameri- applications. This pioneering work area of ultrashort-pulse lasers and can Control Conf., American Automatic utilizes non-adiabatic magnetic transi- ultrafast optoelectronics. This includes Control Council, pp. 2576-2580, tions to combine the benefits of slow all aspects of ultrashort-pulse lasers, Philadelphia, Pa., 1997. wave and fast wave devices in a single from generation and characterization of microwave tube. The high power P. S. Krishnaprasad and H. Struemper, optical pulses to a wide range of microwave component research “Approximate Tracking for Systems on applications using ultrashort pulses. Three-dimensional Matrix Lie Groups includes theoretical and experimental via Feedback Nilpotentization,” Proc. work on the design of various His current research activities can be Fifth IFAC Symp. on Robot Control overmoded coaxial and circular categorized into two groups: (1) ul- (SYROCO’97), M. Guglielmi (ed.), pp. waveguide components. The list of trashort-pulse laser technology, and (2) 25-32, Nantes, France, September, 1997. hardware under investigation includes RF optoelectronic applications using nonlinear waveguide transitions mode ultrafast optical techniques. In the laser P. S. Krishnaprasad and V. Manikonda, converters and injectors, directional technology area, several projects are “Control Problems of Hydrodynamic couplers, filters, and absorbers. being pursued. They include the Type,” IFAC Symposium on Nonlinear development of a versatile, multi-use, Professional Service Control Systems (NOLCOS’98), invited ultrashort-pulse laser system for 1997 PAC Conf. Program Committee paper for special session on Control of research in atomic, molecular, and (RF Sub-committee chair); Ed., 8th Intl. Underactuated Systems, at the optical science and engineering. The Workshop on Advanced Accelerator Enschede, The Netherlands, 1998. system will deliver picosecond through Concepts conference record. P. S. Krishnaprasad and R. femtosecond pulses with variable Venkataraman, “A Model for a Thin University Service repetition rate, tunable wavelength, and Magnetostrictive Actuator,” Proc. 32nd Electrical Engineering: Chair, Under- output energy up to 1 mj. RF optoelec- Annual Conf. on Information Science and graduate Affairs Committee; Depart- tronic applications include: optoelec- Systems, Princeton University, March ment Council; Salary Committee. tronic RF wireless communication, optical control devices for millimeter- 1998. Recent Publications wave and phased array systems, on A. Liu, W. Lawson, A. Fernandez, J. wafer optoelectronic characterization of Wesley G. Lawson Rodgers and W. W. Destler, “Design of MMICs, ultra-wide-band and terahertz a Low-Voltage, Axially Modulated, radiation. In addition, he is also Professor, Cusp-Injected, Third Harmonic, X- working on the high power ultrashort Ph.D., University of Band Gyrotron Amplifier Experiment,” pulse semiconductor laser using Maryland. IEEE Trans. Electron Dev., vol. 44, p. multiple quantum well structures as the Joint Appointment with 2022, 1997. IPR. compact laser source for ultrafast W. Lawson, A. Fernandez, T. Hutchings photoconductive switching of circuit and G. P. Saraph, “A Novel Hybrid elements, optical pulse compression in Slow Wave/Fast Wave Traveling Wave linear and nonlinear fibers and opto- Research Interests Amplifier,” IEEE Trans. Plasma Sci., vol. electronic high temperature supercon- Dr. Lawson’s research interests lie 25, p. 1050, 1997. ductor devices. predominantly in the areas of relativistic electronics and high power microwave G. P. Saraph, V. L. Granatstein and W. Professional Service sources, components, and applications. Lawson, “Design of a Single-Stage Co-Chair, IEEE Microwave Photonics His current research on microwave Depressed Collector for High Power Meeting ’98; LEOS’98 Technical sources is concentrated on gyrotron Pulsed Gyroklystron Amplifiers,” IEEE Committee; Microwave and Optical amplifiers and novel hybrid slow wave/ Trans. Electron Dev., vol. 45, p. 986, Technology Letters, Ed. Board; President, fast wave amplifiers. The gyrotron 1998.

68 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Photonics Society of Chinese-Ameri- in the control of biomechanical systems Hung C. Lin cans. include development of a mathematical University Service and computer-graphic model of the Professor Emeritus, tongue and development of algorithms D.E.E., Polytechnic of New Asian Studies Program Program for interpolating data from ultrasound Brooklyn. Steering Committee; Intl. Exchange scans of the tongue into moving 3- IEEE Life Fellow. Agreement Committee; China Commit- dimensional images of the tongue’s tee. Electrical Engineering: Graduate surface. Council; Graduate Studies Committee; Ad-Hoc Committee to review recom- The research on control system design mendations of Graduate Program has the long-term goal of understanding Research Interests Review Committee; Ward Chair the control of multi-input multi-output Dr. H.C. Lin’s research interests are in Professorship Search Committee. systems. Such systems are becoming the general area of integrated circuits more and more common as sensors and Recent Publications and semiconductor devices. His current actuators become less expensive and as W. L. Cao, S. Tachatraiphop, C. H. Lee, interest is in the application of Resonant economic pressures drive system L. Yan and M. Wraback, “A Diode- Tunneling Diodes (RTD) for multiple- designers to try for greater and greater Pumped Continuous Wave Hybrid Nd: valued digital circuit and fuzzy logic. efficiency of operation. RTDs have very high response and Phosphate Glass and Nd:YVO4 Laser,” OSA TOPS, Advanced Solid State Lasers, The research on biocontrols is intended unique folding characteristics. The use C. R. Pollock and W. R. Bosenberg ed., to contribute to the long-term goals of of these devices can result in circuit vol. 10, pp. 158-161, July 1997. understanding how humans control simplification and high speed. RTD their voluntary movements and of analog-to-digital converters and multi- Y. G. Zhao, S. B. Ogale, R. Shreekala, providing movement aids for individu- valued memories have been developed. Z. W. Dong, S. P. Pai, M. Rajeswari, P. als, such as those with cerebral palsy, T. Venkatesan, W. L. Cao, W. Lu, and During the past year, Dr. Lin has been who have some form of difficulty C. H. Lee, “Laser Power and Tempera- engaged in and undergraduate student controlling their movements. ture Dependence of the Transient project to develop noise reduction Photoimpedance Response of YBCO Professional Service circuits for headphones. The task was Thin Films,” J. Appl. Phys., vol. 83, pp. Assoc. Ed. at Large, IEEE Trans. on first conducted as an EE project, and 1531-1535, February 1998. Automatic Control. later as a project for Research Intern- ship for Telecommunication Engineer- University Service E. E. Funk, L. J. Jasper, Jr., and C. H. ing program under the sponsorship of Lee, “An Optoelectronic RF Burst Chair, College-wide Control Laborato- NSF. The project aims to reduce noise Communications System,” OSA Ultrafast ries Committee. in a headphone both in phase and Electronics and Optoelectronics, pp. 8-10, Recent Publications amplitude. March 1997. W. S. Selbie, L. Zhang, W. S. Levine University Service William S. Levine and C. L. Ludlow, “Using Geometry to Engineering Hall of Fame Committee Determine the Motion of the Cri- coarytenoid Joint,” J. of Acoust. Soc. of Recent Publications Professor, Am., vol. 103, no. 2, pp. 1115-1127, H. C. Lin, “Nonvolatile Semiconductor Ph.D., Massachusetts February 1998. Memory Technology,” IEEE Press, pp. Institute of Technology. 89-155, 1998. IEEE Fellow. C. C. Raasch, F. E. Zajac, B. Ma and W. S. Levine, “Muscle Coordination of H. C. Lin, “Signal Processing Modifica- Maximum Speed Pedaling,” J. Biomech., tions Using Multiple-Valued Literal vol. 30, no. 6, pp. 595-602, 1997. Gate Based on Resonant Tunneling Diodes,” IEEE Intl. Symp. on Circuits and S. D. Yen and W. S. Levine, “Mixed Research Interests Systems, June 1997. H H∞ Optimization: a BMI Solution,” Dr. Levine’s research emphasizes two 2 Proc. 1997 IEEE CDC H. C. Lin, “Resonant Tunneling Diodes broad areas: control system design and , pp. 460-465, for Multi-Valued Digital Applications,” the control of biomechanical systems. Dec. 1997. University of Illinios, Chicago, Ill., Nov. Specific current projects in control M. B. Tischler, D. J. Biezad, W. S. 1997. design include development of an Levine and V. Moldoveanu, “CON- interactive software package for the DUIT–A New Multidisciplinary Patent Disclosures design of rotorcraft control systems, Integration Environment for Flight H. C. Lin and Tang Hao, “Multiple- research on the computation of optimal Control Development,” AIAA Guidance, Valued Literal Circuit Using Resonant controls, and research on robust control Navigation and Control Conf., 23 pages, Tunneling Diodes,” U.S. Patent of spacecraft. Specific current projects August 1997.

University of Maryland · Department of Electrical Engineering 69 5,714,891, issued Feb. 3, 1998, to the Journal of VLSI Signal Processing; Multi- Cellular Wireless Communication University of Maryland. media Signal Processing Technical Systems,” Proc. of 31th Annual Conf. on Committee, IEEE Signal Processing Info. Sci. and Systems, vol. 1, pp. 92-97, K. J. Ray Liu Society; DSP/SSAP/UASP Transition March, 1997. Committee, IEEE Signal Processing F. Rashid-Farrokhi and K.J.R. Liu, Associate Professor, Society; Publicity Chair, IEEE Intl. “Throughput Enhancement in Multiple Ph.D., University of Workshop on Multimedia Signal Access Networks Using Antenna California, Los Ange- Processing. Arrays,” Proc. of 31th Annual Conf. on les. Info. Sci. and Systems, vol. 1, pp. 678-683, NSF National Young University Service March 1997. Investigator; Joint Electtrical Engineering: Faculty Recruit- Appointment with ISR. ing Committee; Salary Committee; Y. Li and K.J.R. Liu, “Blind Adaptive General Academic Affairs Committee. Equalization and Diversity Combining,” Research Interests Recent Publications Proc. IEEE Intl. Conf. Acoustic, Speech, and Dr. Liu’s research interests span all K. J. R. Liu and K. Yao, “High Perfor- Signal Processing (ICASSP), Munich, aspects of signal processing, including mance VLSI Signal Processing: Volume Germany, April 1997. theory and analysis, parallel and I: System Design and Methodology,” distributed processing, fast algorithm, F. Rashid-Farrokhi, K.J.R. Liu, and L. IEEE Press, 1998. (Published in Nov. VLSI, and concurrent architecture, with Tassiulas, “Downlink and Uplink 1997) application to image/video, Capacity Enhancement in Power communications, and medical and K. J. R. Liu and K. Yao, “High Perfor- Controlled Cellular Systems,” Proc. biomedical technology. mance VLSI Signal Processing: Vol II: IEEE Intl. Vehicular Technology Conf., pp. Algorithms, Architectures, and Applica- 647-651, Phoenix, May, 1997. His current research activities include tions,” IEEE Press, 1998. (Published in but are not limited to the three main A. Raghupathy and K.J.R. Liu, “Low- Nov. 1997) areas described below. Power/High-Speed Design of Reed F. Rashid-Farrokhi, K. J. R. Liu, and L. Solomon Decoder,” Proc. IEEE Int. In the area of VLSI signal processing, Tassiulas, “Downlink Power Control Symp. on Circuits and Systems (ISCAS), the effort is on the design and and Base Station Assignment,” IEEE vol. 3, pp. 2060-2063, Hong Kong, June implementation of high-speed, low- Communications Lett., vol. 1, no. 4, 1997. power signal/image processing systems pp.102-104, July 1997. such as the development of low- J. Chen and K.J.R. Liu, “A Complete complexity/real-time schemes for F. Rashid-Farrokhi, K. J. R. Liu, C. Pipelined Parallel CORDIC Architec- motion estimation and video coding/ Bernstein, and D. Walnut, “Wavelet- ture for Motion Estimation,” Proc. IEEE processing; and complex channel Based Multiresolution Local Tomogra- Intl. Symp. on Circuits and Systems coding schemes. phy,” IEEE Trans. on Image Processing, (ISCAS), vol. 4, pp. 2801-2804, Hong vol. 6, no. 10, pp.1412-1430, Oct. 1997. Kong, June 1997. In the area of image and video processing, the focus is on the H. Li, K.J.R. Liu, and S.B. Lo, “Fractal P. Hsu, K. J. R. Liu, and T. Chen, “2-D development of low-complexity, low-bit Modeling and Segmentation for the Mesh Motion Compensation with rate video coding for robust Enhancement of Microcalcifications in Adaptive Interpolation,” Proc. First transmission in wireless Digital Mammograms,” IEEE Trans. IEEE Intl. Workshop on Multimedia Signal communications and networking. Medical Imaging, vol. 16, no. 6, pp. 785- Processing, pp. 213-218, Princeton, June, 798, Dec. 1997. 1997. In the area of wireless communications, we are working on the application of Y. Li, J. Razavilar, and K. J. R. Liu, “A Y. Li and K. J. R. Liu, “Blind Identifica- signal processing/array processing to High-Resolution Technique for Multi- tion and Equalization for Wireless wireless communications and Dimensional NMR Spectroscopy,” Communications Using Antenna networking. IEEE Trans. on Biomedical Engineering, Arrays,” (invited paper), Proc. SPIE: vol. 45, no. 1, pp.78-86, Jan. 1998. Advanced Signal Processing, pp.251-262, Professional Service San Diego, July 1997. Guest Ed., Special Issue on Signal A.Y. Wu, K. J. R. Liu, and A. Processing for Wireless Communica- Raghupathy, “System Architecture of J. Chen and K. J. R. Liu, “A Fully tions, IEEE Journal of Selected Areas in An Adaptive Reconfigurable DSP Pipelined Parallel CORDIC Architec- Communications; Series Ed. (Ed.-in- Computing Engine,” IEEE Trans. on ture for Half-Pel Motion Estimation,” Chief); The Marcel Dekker Book Series on Circuits and Systems for Video Technology, Proc. IEEE Intl. Conf. on Image Processing Signal Processing; Guest Ed., Special Issue vol. 8, no. 1, pp.54-73, Feb. 1998. (ICIP), vol. 2, pp. 574-577, Santa Barbara, Calif., Oct 1997. on Multimedia Signal Processing and F. Rashid-Farrokhi, K.J.R. Liu, and L. Technology, Proceedings of the IEEE, Ed., Tassiulas, “Transmit Beamforming for H. Li, K. J. R. Liu, S. B. Lo, and Y.

70 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Wang, “Stochastic Model and Probabi- Armand M. Makowski Steven I. Marcus listic Decision-Based Classifier for Mass Detection in Digital Mammography,” Professor, Professor, Proc. IEEE Intl. Conf. on Image Processing Ph.D., University of Ph.D., Massachusetts (ICIP), vol. 3, pp. 539-542, Santa Kentucky. Institute of Technology. Barbara, Calif., Oct 1997. NSF Presidential IEEE Fellow; Joint Young Investigator; Appointment with ISR. P. Hsu, K. J. R. Liu, and T. Chen, “An Joint Appointment with Adaptive Interpolation Scheme for 2-D ISR. Mesh Motion Compensation,” Proc. IEEE Intl. Conf. on Image Processing Research Interests Research Interests (ICIP), vol. 3, pp. 646-649, Santa Dr. Makowski’s research interests Dr. Marcus' research interests are in the Barbara, Calif., Oct 1997. broadly lie in applying advanced areas of control and systems engineer- U. V. Koc and K. J. R. Liu, “DCT-Based methods from the theory of stochastic ing, analysis and control of stochastic Subpixel Motion Compensation and processes to the modeling and design of systems, Markov decision processes, Fully DCT-Based Video Coder,” Proc. a variety of engineering systems. discrete event systems, and fault IEEE Intl. Conf. on Image Processing Particular emphasis has been given to detection, with applications in manufac- (ICIP), vol. 3, pp. 598-601, Santa issues of performance modeling and turing, acoustics, and communication Barbara, Calif., Oct 1997. analysis, and to problems of dynamic networks. stochastic optimization as they arise in His research spans both discrete and F. Rashid-Farrokhi, K.J.R. Liu, and L. hybrid terrestrial and satellite network- continuous time stochastic control Tassiulas, “Transmit and Receive ing applications. Diversity and equalization in Wireless problems. In discrete time, his research Networks with Fading Channels,” Proc. Recent research interests include the use has focused on Hidden Markov Models, IEEE GLOBECOM, pp. I-555-559, of asymptotic methods for the perfor- motivated by quality control problems Phoenix, Ariz., Nov. 1997. mance evaluation of switching systems, arising in manufacturing and control long-range dependence modeling for problems in communication networks. F. Rashid-Farrokhi, K.J.R. Liu, and L. multimedia applications in high-speed In particular, he is conducting an Tassiulas, “Transmit Diversity and networks, and stochastic control extensive research program in the Equalization for Power Controlled formulation of resource allocation issues adaptive estimation and control of Wireless Networks,” Proc. 31st Asilomar in wireless networks (e.g., handoffs and Hidden Markov Models. Current Conf. on Signals, Systems, and Computers, paging). He is also currently involved in research focuses on problems with Pacific Grove, Nov. 1997. several industry-sponsored projects robust and risk-sensitive cost, and on J. Razavilar and K. J. R. Liu, “Blocking dealing with ATM technology. the application of these adaptive Probability of Handoff Calls and Professional Service methods to problems of reinforcement Carried Traffic in Wireless Networks Assoc. Ed., Discrete Event Dynamic learning. In continuous time, motivated with Antenna Arrays,” Proc. 31st Systems—Theory & Applications. by flexible manufacturing applications, Asilomar Conf. on Signals, Systems, and his research has been concerned with Computers, Pacific Grove, Nov. 1997. Recent Publications hybrid control problems (controlled R. Rezaiifar and A. M. Makowski, Patent Disclosures switching diffusions) involving both “From Optical Search Theory to continuous and discrete states. U. V. Koc and K. J. R. Liu, “Low- Efficient Mobility Management Strate- He is working on a number of applica- Complexity Motion Estimation Tech- gies for Cellular Networks,” IEEE J. on tions of these techniques. One current niques,” U.S. Patent no. 5,790,686, Selected Areas in Communications, vol. project involves communication August 4, 1998. JSAC-15, pp.1253-1264, 1997. network control with delayed or M. Parulekar and A. M. Makowski, incomplete state information, robust “M|GI|∞ Input Processes: A Versatile network control, and learning and Class of Models for Traffic Network,” adaptive network control. Another Proc. of Infocom ‘97, pp. 1452-1459, current activity involves the application Kobe, Japan, April 1997. of adaptive control techniques to fault K. Tsoukatos and A. M. Makowski, detection methodologies, with applica- “Heavy Traffic Analysis for a Multi- tion to the detection of faults on the plexer Driven by M|GI|∞ Input Pro- basis of acoustic data. cesses,” Proc. 15th Intl. Teletraffic Congress, His current research includes a project pp. 497-506, Washington, D.C., June which is developing new approaches to 1997. operational decision making in semi-

University of Maryland · Department of Electrical Engineering 71 conductor manufacturing. Stochastic Conf. on Information Sciences and Systems, Another component of his research control and Markov decision process pp. 636-641, Johns Hopkins Univ., activity is numerical modeling of (MDP) models are being applied to the Baltimore, Md., March 1997. semiconductor devices by using drift- development of techniques that diffusion, hydrodynamic and S. Coraluppi and S. I. Marcus, “Mixed integrate product and market dynamics Boltzmann-Poisson models as well as Risk-Neutral/Minimax Control of into operational decision making noise analysis in semiconductor devices Markov Decision Processes,” Proc. 1997 algorithms. In particular, MDP models from the semi-classical transport point Conf. on Information Sciences and Systems, being developed use aggregate fab of view. pp. 435-440, Johns Hopkins Univ., models, and include life cycle dynamics Baltimore, MD, March 1997. Professional Service such as technology shrink, modular Ed., IEEE Trans. on Magnetics; Ed., implementation, and learning. Risk S. Coraluppi and S. I. Marcus, “Obser- Electromagnetism Series, Academic Press; sensitive and adaptive MDP solution vations on Nonlinear Risk-Sensitive IEEE Magnetics Society Administrative algorithms are being pursued. Control,” Proc. 1997 Conf. on Information Sciences and Systems, pp. 458-459, Johns Committee; IEEE Magnetics Society Professional Service Hopkins Univ., Baltimore, MD, March Publication Department; Coordinator, Ed. Advisory Board, Acta Applicandae 1997. IEEE Magnetics Society Distinguished Mathematicae; Assoc. Ed., Mathematics of Lecturer Program; NSF Site Renewal Control, Signals, and Systems; Assoc. Ed., S. Coraluppi and S. I. Marcus, “Risk- Panel, NSF Data Storage Systems Discrete Event Dynamic Systems: Theory Sensitive Queueing,” Proc. 35th Annual Center; 7th Joint Intl. MMM- and Applications; Corresponding Ed., Allerton Conf. on Communication, Control, INTERMAG Conf. Program Commit- SIAM Journal on Control and Optimiza- and Computing, Urbana, Il., September- tee. October, 1997. tion; Organizing Committee, 1998 University Service SIAM Conf. on Control and its Appli- A. Thomas and S.I. Marcus, “Reinforce- Electrical Engineering: Chair, Promo- cations. ment Learning for MDPs Using Tempo- tion and Tenure Committee; New University Service ral Difference Schemes,” Proc. 36th Faculty Orientation Program. Distin- Electrial Engineering: Chair, Faculty IEEE Conf. on Decision and Control, San guished Scholar-Teacher Selection Recruiting Committee; Chair, Depart- Diego, Calif., December 1997. Committee; Material Research Science ment Council; Graduate Studies and and Engineering Center Advisory Research Committee; Chair, Ph.D. Isaak D. Mayergoyz Board. Panel. ISR Executive Committee. Professor, Recent Publications Recent Publications Ph.D., Institute of I. D. Mayergoyz and M. Neely, “Non- E. Fernandez-Gaucherand and S. I. Cybernetics, Ukrainian linear Diffusion in Anisotropic Super- Marcus, “Risk-Sensitive Optimal Academy of Science, conductors,” J. of Applied Physics, vol. 81, Control of Hidden Markov Models: USSR. no. 8, pp. 4234-4236, 1997. Structural Results,” IEEE Trans. Auto- IEEE Fellow; Research I. D. Mayergoyz, R. Madabhushi, E. R. matic Control, vol. 42, pp. 1418-1422, Fellow of GE, Research Burke, R. D. Gomez, “Analytical October 1997. and Development Solution for the Side-Fringing Fields of M. K. Ghosh, A. Arapostathis, and S. I. Center. Narrow Beveled Heads,” J. of Applied Marcus, “Ergodic Control of Switching Research Interests Physics, vol. 81, no. 8, pp. 4850-4852, Diffusions,” SIAM J. on Control and Dr. Mayergoyz’s research interests are 1997. Optimization, vol. 35, pp. 1952-1988, in the general areas of magnetics, C. E. Korman and I. D. Mayergoyz, November 1997. electromagnetics, semiconductor device “Review of Presiach Type Models R. Kumar, S. Nelvagal and S. I. Marcus, modeling, and power engineering. His Driven by Stochastic Inputs as Models “A Discrete Event Systems Approach current research activities are heavily for After-Effect,” Physica B (condensed for Protocol Conversion,” Discrete Event focused in the areas of mathematical matter), vol. 233, pp. 381-389, 1997. Dynamic Systems: Theory and Applications, models for hysteresis (with special A. A. Adly, I. D. Mayergoyz and A. vol. 7, pp. 295-315, 1997. emphasis on magnetic and supercon- ducting hysteresis), magnetic force Bergquist, “Utilizing Anisotropic M. K. Ghosh and S. I. Marcus, “Sto- microscopy and its applications to Presiach-Type Models in the Accurate chastic Differential Games with Mul- magnetic recording and data retrieval Simulation of Magnetorestriction,” tiple Modes,” Stochastic Analysis and from magnetic media, analysis of IEEE Trans. on Magnetics, vol. 33, no. 5, Applications, vol. 16, pp. 91-105, 1998. electromagnetic fields in media with pp. 3931-3933, 1997. A. Thomas and S.I. Marcus, “Reinforce- hysteresis, and numerical techniques for R. Madabhushi, R. D. Gomez, E. R. ment Learning in MDP Framework the calculation of 3-D electromagnetic Burke, I. D. Mayergoyz and J. Orloff, Using Temporal Differences,” Proc. 1997 fields. “Inter-Track Interference Studies Using

72 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology MFM Image Reconstruction,” IEEE properties of semiconductors to be Rubia, D. J. K. Eaglesham, O. W. Trans. on Magnetics, vol. 33, no. 5, pp. altered by doping with less than 0.1 µm Holland, M. E. Law, C. W. Magee, J. W. 4053-4055, 1997. lateral resolution opening the door to Mayer, J. Melngailis and A. F. Tasch, new types of devices. “Ion Beams in Silicon Processing and A. A. Adly and I. D. Mayergoyz, Characterization,” J. of Appl. Phys., vol. “Accurate Modeling of Vector Hyster- Ion image projection is a promising 81, no. 10, p. 6513, May 1997. esis by Using Superpositions of technique for future chip fabrication. At Presiach-Type Models,” IEEE Trans. on present, photolithography is still being D. Santamore, K. Edinger, J. Orloff and Magnetics, vol. 33, no. 5, pp. 4155-4157, used to define the patterns on semicon- J. Melngailis, “Focused Ion Beam 1997. ductor chips down to 0.25 µm mini- Sputter Yield Change as Function of mum linewidth. As minimum dimen- Scan Speed,” J. Vac. Sci. Tech., vol. 15, C.-H. Chang, C.-K. Lin, W. Liang, N. sions shrink to 0.1 µm and below, a new no. 6, p. 2346, Nov./Dec. 1997. Goldsman, P. Oldiges and J. Melngailis, kind of lithography will need to be “The Spherical Harmonic Method: C.-H. Chen, Z. Trajanovic, Z. W. Dong, developed. The work done here Corroboration with Monte Carlo and C. J. Lobb, T. Venkatesan, K. Edinger, J. includes modelling of mask distortion Experiment,” Proc. Intl. Conf. on Simula- Orloff and J. Melngailis, “Fabrication of due to stress relief, mask heating and tion of Semiconductor Processes and Devices High-Temperature Superconductor cooling, and negative ion source (SISPAD), pp. 225-228, 1997. Josephson Junctions by Focused Ion development. Beam Milling,” J. Vac. Sci. Tech., vol. 15, C. Korman and I. D. Mayergoyz, Professional Service no. 6, p. 2379, Nov./Dec. 1997. “Semiconductor Noise in the Frame- work of Semiclassical Transport,” Proc. Co-Chair, U.S.-Japan Workshop on I. L. Berry, A. A. Mondelli, J. Nichols Intl. Symp. on Theoretical Electrical Focused Ion Beam Technology. and J. Melngailis, “Programmable Engineering, pp. 142-147, Palermo, Italy, University Service Aperture Plate for Maskless High- June 1997. Electrical Engineering: Chair, Depart- Throughput Nanolithography,” J. Vac. ment Council; Faculty Search Commit- Sci. Tech., vol. 15, no. 6, p. 2382, Nov./ John Melngailis tee; Undergraduate Affairs Committee. Dec. 1997. Ward Chair Search Committee. W. Wang, C. Chang, D. Ma, M. Professor, Recent Publications Peckerar, I. Berry, N. Goldsman and J. Ph.D., Carnegie Melon Melngailis, “Self-aligned Subchannel University. A. A. Mondelli, I. L. Berry, J. Melngailis Implant Complementary Metal-Oxide Joint Appointment with and G. Gross, “Ion Projection Lithogra- Semiconductor Devices Fabrication,” J. IPR. phy,” Microlithography World, vol. 12, autumn 1997. Vac. Sci. Tech., vol. 15, no. 6, p. 2816, Nov./Dec. 1997. C.-C. Shen, J. Murguia, N.Goldsman, M. Peckerar, J. Melngailis and D. A. K. Edinger, V. Yun, J. Melngailis, J. Research Interests Antoniadis, “Use of Focused-Ion-Beam Orloff and G. Magera, “Development of The research work of Dr. John Meln- and Modeling to Optimize Submicron a High Brightness Gas Field Ion gailis is in the use of ion beams in MOSFET Characteristics,” IEEE Trans. Source,” J. Vac. Sci. Tech., vol. 15, no. 6, microfabrication. This includes both on Electron Devices, vol. 45, no. 2, Feb. p. 2365, Nov./Dec. 1997. focused (point) beams and ion image 1998. projection. Focused ion beams are used Howard M. Milchberg in the semiconductor industry for local S. K. Guharay, E. A. Sokolovsky, M. circuit rewiring, for failure analysis, and Reiser, J. Orloff and J. Melngailis, Professor, for mask repair. These applications “Study of Energy Broadening of High- Ph.D., Princeton depend on ion beam induced deposi- brightness Ion Beams form a Surface University. tion, ion milling, and gas assisted ion Plasma Penning Source and its Rel- NSF Presidential etching. Our efforts are aimed at evance in Ion Projection Lithography,” Young Investigator; improving and expanding the usefulness Microelectronics Engineering, vol. 35, p. American Physical of these techniques by understanding 435, 1997. Society Fellow; the beam induced microchemistry L. Didenko, J. Melngailis, H. Loschner, Joint Appointment with operating at dimensions below 50 nm, G. Stengl, A. Chalupka and A. IPST. and by developing new applications. A Shimkunas, “Analysis of Stencil Mask Research Interests new effort is also launched on the Distortion in Ion Projection Lithogra- application of higher energy focused ion Professor Milchberg’s research interests phy,” Microelectronics Engineering, vol. 35, are in the area of laser-matter interac- beam systems to direct maskless, p. 443, 1997. resistless implantation of semiconductor tions. With use of state-of-the-art high devices. This technique permits the E. Chason, S. T. Picraux, J. M. Poate, J. power, ultrashort pulse lasers (which his O. Borland, M. I. Current, T. Diaz de la group designs and builds), his activities

University of Maryland · Department of Electrical Engineering 73 encompass the regimes of linear Linda Milor computational methods, parallel/ through strongly nonlinear distributed computing systems, fault- nonperturbative optics. The research is Assistant Professor, tolerant computing, and applied graph highly interdisciplinary, including Ph.D., University of theory. His current research activities elements of solid state physics, atomic California, Berkeley. include software/hardware codesign, physics, plasma physics, and quantum NSF Career Award; VLSI system design, VLSI design electronics. Applications of these studies Joint Appointment with automation, and large-scale computa- include efficient sources of coherent X- ISR. tional methods. rays (extreme harmonics or X-ray The recent advancements of VLSI CAD lasers) for use in imaging or patterning tools and reconfigurable VLSI devices applications and compact table-top GeV Research Interests have made it possible to develop both electron accelerators. Among recent Dr. Milor’s research interest is in the software and hardware for application- results which will bring such applica- testing of analog and mixed signal and algorithm-specific computing tions closer to reality was the first ever circuits. Because analog and mixed systems. Using state-of-the-art CAD demonstration by his group of the signal testing accounts for a significant tools, including Hardware Description optical guiding of ultrahigh intensity portion of final device cost, it is consid- Languages, application-specific RISC laser pulses. ered one of the most important prob- lems in integrated circuit design by processors and DSP chips are designed Professional Service many large companies and the Semi- and fabricated into VLSI chips. Low- OSA Conference on Applications of conductor Industry Association. In her power chip design methodologies, in High Field and Short Wavelength work, the use of semiconductor process particular, at the algorithmic and Sources VIII Program Committee; characterization data and circuit/ architectural levels, are also investi- Invited Workshop Discussion Leader, behavioral simulation has been pro- gated. Based on a recently established Berkeley Workshop on Fast Ignitor posed to reduce the cost of production algorithm/architecture-based low-power Physics; CLEO/QELS Meeting Pro- testing of analog circuits. Algorithms design methodology, 11,500-gate gram Committee; APS Division of have been developed for optimally CMOS DSP chips were designed, Plasma Physics meeting Program ordering tests and for identifying fabricated, and successfully tested in the Committee. redundant tests, which can be dropped VLSI Design Automation Lab (in University Service without significant fault coverage loss. collaboration with Dr. Liu). These chips are also of high performance when IPST: Policy, Facilities and Services A circuit, in order to be manufactur- regular supply voltages are applied. Committee. able, needs to be insensitive to uncon- In the area of VLSI design automation, Recent Publications trollable variations in the manufacturing efficient algorithms are developed for T. R. Clark and H. M. Milchberg, process. In her work, statistical model- routing and placement for gate arrays, “Space and Time Resolved Evolution of ing algorithms have been developed for FPGAs, and MCMs. Some of our the Plasma Waveguide,” Phys. Rev. Lett., calculating parametric yield. Statistical algorithms have been implemented in vol. 78, p. 2373, 1997. modeling reduces the computational cost of yield estimation by replacing CAD tools in Japan, having produced S. P. Nikitin, T. Antonsen, T. R. Clark, Monte Carlo simulations with a re- more than 500 commercial chips. Y. Li, and H. M. Milchberg, “Guiding of sponse surface model. Her work Development of neural network-based Intense Femtosecond Pulses in Pre- primarily concentrates on constructing algorithms and integrated design system formed Plasma Channels,” Opt. Lett., nonlinear response surface models for for algorithm-based low-power DSP vol. 22, p. 1787, 1997. high dimensional functions. chips are also in progress. T. R. Clark and H. M. Milchberg, In the areas of large-scale computa- “Laser-Driven Implosion of Cylindrical Kazuo Nakajima tional methods and their parallel Plasma,” Phys. Rev., E 57, p. 3417, 1998. computing system design, a new Professor, method of solving linear equations has T. R. Clark and H. M. Milchberg, Ph.D., Northwestern been established. It has been applied in “Space and Time-Resolved Measure- University. many fields, and various improvements ment of the Evolution of the Plasma NSF Presidential over the traditional methods have been Waveguide,” Prof. Conf. on High Field Young Investigator. reported, such as speed-up of the Interactions and Short Wavelength Genera- SPICE circuit simulator. Parallel and tion, Sante Fe, NM. distributed system architectures for hardware implementation of this Research Interests method are also investigated. The Dr. Nakajima’s research interests are in ultimate goal is to build application/ the general area of computer software/ hardware codesign, VLSI, large-scale

74 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology algorithm-specific computing hardware theory and statistics, involves an Robert W. Newcomb systems. investigation of general models for “real” data and the associated theoreti- Professor, Professional Service cal limits of compressibility, together Ph.D., University of Assoc. Ed., Journal of Circuits, Systems, with the development of finite-state California, Berkeley. and Computers. algorithms for compressing the data IEEE Life Fellow. University Services efficiently and on-line. A related activity Registered Professional Electrical Engineering: Chair, General concerns a study of the fundamental Engineer. Academic Affairs Committee; Faculty limits of, as well as efficient schemes Search Committee; Ad Hoc Committee for, hierarchical or multi-resolution Research Interests on the Review of Graduation Require- data/video compression and routing in Professor Newcomb’s research interests ments for the M.S. and Ph.D. Degrees multicasting applications. The issues of are in the general area of circuit and in Electrical Engineering; Graduate bit allocation and rate control for video systems theory with reference to VLSI Studies and Research Committee; compression are also being addressed. realizations, especially for neural Chair, Facilities and Services Commit- Another activity focuses on design and networks, analog circuit syntesis, and tee; MOSIS Subcommittee. performance analysis for high-speed biomedically related systems. Recent Publications terrestrial and satellite networks. This Much of his current research is oriented J. Narasimhan, K. Nakajima and C. S. study includes the development of toward analog circuits and biologically Rim, “A Graph Theoretical Approach models for multimedia traffic displaying realistic neural networks, including for the Yield Enhancement of short- and long-range dependencies, those with live neurons on silicon chips. Reconfigurable VLSI/WSI Arrays,” and the evaluation of component Some of this research stems from joint Discrete Applied Mathematics. performance and end-to-end quality of service with applications to buffer undertakings with colleagues at other Y.-J. Cha, C. S. Rim and K. Nakajima, engineering and capacity assignment. institutions. For example, the neuro- “SEGRA: A Very Fast General Area Fundamental limits of transmission over physiologically oriented neural network Router for Multichip Modules,” IEEE (time-varying) wireless channels, as well PC program SYNETSIM of Dr. D. Trans. on Computer-Aided Design of as security issues, are also being Hartline at the University of Hawaii has Integrated Circuits and Systems. addressed. been made user friendly by his research group, and is presently being translated Prakash Narayan University Service from a software to a hardware version. President’s Commission on Ethnic and Related research concerns the genera- Professor, Minority Issues; Chair, Department of tion of chaos in biologically realistic D.Sc., Washington Electrical Engineering Post-Tenure artificial neural networks, with the University, St. Louis. Faculty Review Committee. ISR: Salary intent of being able to develop means to Joint Appointment with Committee; Post-Doctoral Fellow control chaotic activity, such as epilepsy ISR. Committee. and heart attacks, in biological systems. Recent Publications On the more mathematical side, a I. Csiszár and P. Narayan, “Common functional neural network has been developed which is based upon repro- Research Interests Randomness and Secret Key Genera- ducing kernels in Hilbert space and Dr. Narayan’s research interests are in tion with a Helper,” Proc. IEEE Intl. which can be used to model dynamical the areas of information and communi- Symp. on Information Theory, p. 157, Ulm, systems for nonlinear control, this work cation theory, performance evaluation Germany, June-July 1997. being also carried out in conjunction issues in hybrid wideband terrestrial A. Das and P. Narayan, “Transmission with colleagues at the University of and satellite communication networks, Capacity Assignment to Two Service California, Irvine. Applications of and system modeling and identification. Classes with Different Priorities,” Proc. developed circuits are made to multiple Applications include data and video 2nd Annual Fedlab Symp. (ATIRP Conf.), armed robots and new classes of compression, transmitter-receiver pp.102-106, College Park, Md., Febru- computers including his soliton com- designs for communication systems, ary 1998. puter. speech recognition, and switching and capacity assignment in high-speed One of the primary research efforts of networks. his Micro-Systems Laboratory group is associated with self emissions from the His current research activities include ear. Theories for these emissions are the statistical modeling of data and under development, as well as circuits universal data compression. This work, which can be used to control them and which is at the interface of information which also lead to new classes of

University of Maryland · Department of Electrical Engineering 75 hearing aids and sound detection and S. K. Singh, D. A. Panagiotopoulos, T. ion sources for possible application in processing systems. R. Darden and R. W. Newcomb, secondary ion mass spectrometry, as Professional Service “Hardware-Oriented Semistate Descrip- well as beam induced chemistry. Assoc. Ed.: IEEE Trans. on Circuits and tions of Functional Artificial Neural Professional Service Systems; Circuits, Systems, and Signal Networks,” Proc. 1997 IEEE Intl. Conf. EIPBN Symposium Advisory Commit- Processing; Neurocomputing. IJCNN on Systems, Man, and Cybernetics, pp. 13- tee. 18, Orlando, Fla., October 1997. Program Committee; ICARCV ‘98 Intl. University Service Advisory Committee; CSC’98 Intl. L. Sellami, S. K. Singh, R. W. Newcomb Electrical Engineering: General Affairs Scientific Committee; Compu Panel and G. Moon, “Linear Bilateral CMOS Academic Committee; Post-Tenure Member, Computer World national Resistor for Neural-Type Circuits,” Proc. Review Committee. Senate Core survey member; Singapore Trade 40th Midwest Symp. on Circuits and Committee; Senate. Development Board Survey Member; Systems, pp. 1330-1333, Sacramento, VLSI Neural Networks for Intelligent CA, August 1997. Recent Publications Signal Processing, ISCAS Organizer; J. Orloff, Ed., “Handbook of Charged Chair and Organizer, Neural Networks Jon Orloff Particle Optics,” CRC Press, Boca Hardware, MWCAS; Chair, System and Raton, La., 1997. Implementation I, ICICS; Chair, Novel Professor, C.-H. Chen, Z. Trajanovic, Z. W. Dong, Computational Cybernetic Concepts Ph.D., Oregon C. J. Lobb, T. Venkatesan, K. Edinger, J. and Applications, SMC; Neural Net- Graduate Center. Orloff and J. Melngailis, “Fabrication of works Session Organizer, ICARCV NSF Presidential High Temperature Superconductor 1998, Paintbranch High School student Young Investigator; Josephson Junctions by Focused Ion research supervisor. Joint Appointment with Beam Milling,” J. Vac. Sci. Tech., vol. University Service IPR. B15, p. 2379, 1997. Visiting Scholar Supervisor; Founder, Research Interests D. Sanatmore, K. Edinger, J. Orloff and AAP University Poetry Prize. Dr. Orloff’s interests are in the produc- J. Melngailis, “Focused Ion Beam Recent Publications tion, focusing, and applications of high Sputter Yield Changes as a Function of L. Sellami and R. W. Newcomb, “A brightness ion and electron beams. His Scan Speed,” J. Vac. Sci. Tech., vol. B15, Digital Scattering Model of the Co- research is in field emission ion sources, p.2346, 1997. ion optics, and applications of high chlea,” IEEE Trans. on Circuits and K. Edinger, V. Yun, J. Melngailis, J. resolution focused ion beams. Systems—I, Fundamental Theory and Orloff and G. Magera, “Development of Applications, vol. 44, no. 2, pp. 174-180, Dr. Orloff joined the faculty at the a High Brightness Gas Field Ion February 1997. University of Maryland in December Source,” J. Vac. Sci. Tech., vol. B15, p. L. Sellami and R. W. Newcomb, 1993. In 1994, he was principally 2365, 1997. involved in the establishment of the “Computable Real Lattice Structures for L. C. Chao, J. Orloff and L. Wang, Laboratory for Ion Beam Research and Cochlea-Like Digital Filters,” CSSP “Spherical Aberration Corrector Using Applications. His present work involves Journal, vol. 17, no. 1, pp. 103-116, 1998. Space Charge,” J. Vac. Sci. Tech., vol. studies of high brightness gas phase B15, p. 2732, 1997. S. K. Singh, D. A. Panagiotopoulos, T. field ionization sources for possible R. Darden and R. W. Newcomb, applications in ion lithography and high A. Yavuz Oruç “Hardware Oriented Semistate Descrip- resolution ion microscopy. Dr. Orloff is tions of Functional Artificial Neural also doing research on novel lenses, Professor, Networks,” SMC’97 Conf. Proc., pp. 13- including space charge lenses, that can Ph.D., Syracuse 18, Orlando, Fla., October 1997. be used to improve the performance of University. D. A. Panagiotopoulos, S. K. Singh and the sort of high resolution focused ion R. W. Newcomb, “VLSI Implementa- beam systems that are widely used for tion of a Functional Neural Network,” semiconductor device design and Proc. ISCAS’97, pp. 701-704, Hong fabrication. With the installation at Kong, June 1997. Maryland in the summer of 1995 of a high performance focused ion beam/ Research Interests L. Sellami and R. W. Newcomb, “A scanning electron microscope system, Dr. Oruç’s research is motivated by a Pipelined Synthesis of Cochlea DSp he began research in the area of micro- variety of problems which arise in the Lattice Filters,” Proc. 1st Intl. Conf. on machining—the direct fabrication of Information, Communications & Signal analysis and design of networks for objects at scale of ~10 micrometers. He advanced computer and communication Processing, pp. 1163-1167, Singapore, is also planning work on the study of systems. These problems range from Sept. 1997. new classes of electrohydro-dynamic lower bound complexity questions for

76 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology certain types of interconnection struc- Edward Ott Committee for the Dannie Heineman tures, such as concentrators, Prize for Mathematical Physics. superconcentrators, permuters, general- Professor, University Service izers, sorters, and nonblocking net- Ph.D., Polytechnic Electrical Engineeirng: Department works, to the proofs of their existence as Institute of Brooklyn. Council; Ward Chair, Search Commit- well as their explicit constructions Distinguished tee; Chair, Qualifying Exam Commit- within asymptotical orders of such University Professor; tee. Physics: Chair, Department Coun- lower bounds. Our techniques in IEEE Fellow; cil; APT Committee; Asst. Prof. Faculty attacking these problems rely on both American Physical Search Committee; Physics Colloquium deterministic and random computation Society Fellow; Joint Organizer. and communication models. Our more Appointments with Physics and ISR. Recent Publications recent work on networks has focused on Research Interests packet switching and buffered network E. Ott, U. Feudel and C. Grebogi, Professor Ott’s research interests are in models, and the complexity of packet “Phase Locking in Quasiperiodically chaotic dynamics, fundamental theory switching networks. Forced Systems,” Phys. Rpts., vol. 290, p. of chaotic systems and their application 11, 1997. Professor Oruç is also interested in to problems in science and engineering. nurturing synergies between different T. Bohr, G. Huber, and E. Ott, “The Some of his areas of interest where areas of research on computer and Structure of Spiral-Domain Patterns and fundamental aspects of chaos have been communication systems. In this regard, Shocks in the 2D Complex Ginzburg- investigated include: (1) bifurcations of his recent research concentrated on how Landau Equation,” Physica, vol. D 106, chaotic attractors resulting in sudden to use cyclic permutation networks to pp. 95-112 1997. changes in the size or character of the compute various scalar and vector attractor; (2) studies of the properties of E. Ott, M. A. F. Sanjuan, J. Kennedy, computations by exploiting monoid and regions of state space that lead to and J. A. Yorke, “Indecomposable group isomorphisms between algebraic different solutions (e.g., fractal basin Continua and the Characterization of and permutation groups. This work boundaries); (3) the properties of Strange Sets in Nonlinear Dynamics,” resulted in a U.S. patent. The structure chaotic transients (orbits that display Phys. Rev. Lett., vol. 78, p. 1892, 1997. of full linear groups of nonsingular chaotic behavior for a finite time after matrices to develop a network-based E. Ott and B. R. Hunt, “Structure in the which they abruptly move off to computer for matrix computations is Parameter Dependence of Order and execute some other type of motion); presently being studied. Chaos for the Quadratic Map,” J. Phys., and (4) studies of the fractal and multi- vol. A30, p. 7067, 1997. More recently, Professor Oruç has been fractal properties of invariant measures working on developing educational on chaotic attractors and other invariant E. Ott, B. R. Hunt and J. A. Yorke, tools for teaching computer architec- chaotic sets. “Differential Generalized Synchronism,” ture. In particular, he designed and Phys. Rev., vol. E55, p. 4029, 1997. Some of his areas of current interest developed a graphics-oriented computer where chaos theory is applied to E. Ott, J. Jacobs and C. Grebogi, simulator, called CodeMill, with Dr. problems in science and engineering are “Computing the Masure of Emre Gündüzhan. CodeMill is a first the following: (1) control of chaotic Nonattracting Chaotic Sets,” Physica, generation multimedia architecture, and dynamical systems (the exponential vol. D108, p. 1, 1997. Dr. Oruç is currently working to sensitivity of chaos to small perturba- expand its capabilities to simulate a E. Ott, E. J. Kostelich, I. Kan, C. tions implies that chaotic systems can be wider range of computer architectures. Grebogi and J. A. Yorke, “Unstable controlled by use of only small con- Dimension Variability: A Source of University Service trols); (2) use of the symbolic dynamics Nonhyperbolicity in Chaotic Systems,” Department of Electrical Engineering representation of chaotic orbits for the Physica, vol. D109, p. 81, 1997. Ph.D. Exam Panel. purposes of communication; and (3) E. Ot and C. Schroer, “Targeting in Recent Publications application of chaotic dynamics to studies of fluids and plasmas (e.g., the Hamiltonian Systems with Mixed M. B. Lin and A. Y. Oruç, “Design of an kinematic dynamo problem which KAM/Chaotic Phase Spaces,” Chaos, Optoelectronic Arithmetic Processor addresses the question of why the earth vol. 7, p. 512, 1997. Based on Permutation Networks,” IEEE and the sun have magnetic fields). Trans. on Comput., January 1997. E. Ott, C. Reyl and T. M. Antonsen, Professional Service “Nature of the Vorticity Field Generated E. Gündüzhan and A. Y. Oruç, “Struc- IEEE Nuclear and Plasma Science by Instabilities of Chaotic Fluid Flows,” ture and Density of Sparse Crossbar Society Human Rights Committee; Phys. Rev. Lett., vol. 78, p. 2559, 1997. Concentrators,” DIMACS Workshop on Editorial Boards: Chaos; Dynamics and Nonblocking Switched Networks, invited E. Ott, J. Jacobs and B. R. Hunt, Stability of Systems. Chair, Selection paper, Princeton, NJ, July 1997. “Scaling of the Duration of Chaotic

University of Maryland · Department of Electrical Engineering 77 Transients in Windows of Attracting yields powerful and insightful tools for He is co-author of the textbook Elec- Periodicity,” Phys. Rev., vol. E56, p. optimal distributed inference. The tronic Materials: Science and Technology, 6508, 1997. results of his work also underscore and editor of the book Synthetic Micro- fundamental differences in the choice of structures in Biological Research. He is E. Ott, J. Jacobs, T. M. Antonsen and J. statistical methods and algorithms currently head of the Surface and A. Yorke, “Modeling Fractal Entrain- between single-sensor and multi-sensor Interface Sciences Branch at NRL. Dr. ment Sets of Tracers Advected by systems. Peckerar was elected Fellow of the Chaotic Temporally Irregular Fluid IEEE in 1993. Flows,” Physica, vol. D110, p. 1, 1997. University Service Professional Service E. Ott and P. So et al., “Extracting Electrical Engineering: Associate Chair Unstable Periodic Orbits from Chaotic for Undergraduate Studies; General Chief Technical Officer, DARPA Time Series,” Phys. Rev., vol. E55, p. Academic Affairs Program Committee; Advanced Lithography Frequency; 5398, 1997. Undergraduate Affairs Committee; Rensselaer Polytechnic Institute Board Chair, Search Committee for Under- of Directors. E. Ott, S. C. Venkataramani and T. M. graduate Coordinator; Graduate Recent Publications Antonsen, “Levy Flights in Fluid Flows Coordinator Search Committee. Dean’s M. C. Peckerar, F. K. Perkins, E. A. with no KAm Surfaces,” Phys. Rev. Lett., Selection Committee for Teaching Dobisz and O. J. Glemback, “Issues in vol. 78, p. 3864, 1997. Awards. Nanolithography for Quantum Effect E. Ott, M. Gabbay and P. N. Guzdar, Martin Peckerar Device Manufacture,” Handbook of “Motion of Scroll Wave Filaments in the Microlithohraphy, Micro Machining, and Complex Ginzburg-Landau Equation,” Microfabrication, SPIE Press, Professor (Part-time), Phys. Rev. Lett., vol. 78, p. 2012, 1997. Bellengham, WA, P. Rai-Chaudry, ed., Ph.D., University of 1997. E. Ott, T. M. Antonsen and J. Jacobs, Maryland. “Fractal Patterms of Tracers Advected Fellow IEEE. C.-C. Shen, J. Murguia, N. Goldsman, by Smotth Temporally Irregular Fluid M. Peckerar, J. Melngailis and D. Flows and Their Analysis by Use of Antoniadis, “Use of Focused-Ion-Beam Random Maps,” Fractals, vol. 5, p. 119, and Modeling to Optimize Submicron 1997. MOSFET Characteristics,” IEEE Trans. Research Interests on Elec. Dev., vol. 45, no. 2, pp. 453-459, Dr. Peckerar received a B.S. degree Adrian Papamarcou 1998. from Stony Brook University, and his Associate Professor and M.S. and Ph.D. degrees from the F. K. Perkins, C. R. K. Marrian and M. Associate Chair for University of Maryland. In 1976, he C. Peckerar, “Novel Technique for Undergraduate Studies, joined the Westinghouse Advanced Improving Pattern Placement in Ph.D., Cornell Technology Laboratory, where he led a Membrane Mask Making,” J. Vac. Sci. University. group working in advanced MOS Te ch . , vol. B15, no. 6, pp. 2218-2223, process development. At Westinghouse, Nov.-Dec. 1997. he developed the deep-depletion CCD W. Wang, C. Chang, D. Ma, et al., “Self- for x-ray and for IR imaging. In 1981, Aligned Subchannel Implant Comple- Research Interests he became head of the Nanoelectronics mentary Metal-Oxide Semiconductor Dr. Papamarcou’s research interests are Processing Facility at the Naval Re- Device Fabrication,” J. Vac. Sci. Tech., in the areas of information theory and search Laboratory (NRL) and, subse- vol. B15, no. 6, pp. 2816-2820, Nov.- statistical communications. His current quently, head of the Surface and Dec. 1997. efforts are focused on the optimization Interface Sciences Branch. There, he of multi-sensor networks for distributed developed devices for deep-UV imag- M. C. Peckerar, “The Evolution of GaN inference and data fusion. Different ing, and was co-inventor of the laser- as an Electronic Material,” Proc. March network configurations involving data plasma source for x-ray lithography. He Electrochemical Society Symposium on collection and processing nodes con- has: studied the effects of soft x-ray Components Semiconductors Materials, nected via information links of varying lithography on MOS devices; devel- Characterizations, and Devices, March capacity are considered. Algorithms are oped e-beam proximity correction 1997. sought that optimally classify random techniques; and he was co-inventor of signals while meeting constraints on mono-molecular surface imaging resist complexity, time delay, and communi- currently under development between cation bandwidth. His approach, which Shipley Corp. and NRL. is based on large-sample performance Dr. Peckerar has been a part-time figures for regularized signal sources, professor in the department since 1983.

78 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Martin P. Reiser Professional Service Rev. Lett., Vol. 81, pp. 96-99, 1998. 1997 Intl. Symposium on Heavy Ion M. Reiser, “The Physics of High- Professor, Inertial Fusion Organizing Committee; Intensity Nonneutral Beams,” Workshop Ph.D., Mainz Univer- 1999 Particle Accelerator Conf. Orga- on Nonneutral Plasmas, Univ. of Boulder, sity, Germany. nizing and Program Committees. Color., July-August, 1997. IEEE Fellow; Recent Publications American Physical M. Reiser, “Beam Physics Issues in C. Allen and M. Reiser, “Optimal Society Fellow. Heavy Ion Intertial Fusion Drivers,” Transport of Particle Beams,” Nuclear Intl. Symp. on Heavy Ion Intertial Fusion, Intrum. and Methods in Phys. Research, vol. Heidelberg, Germany, September 1997. Research Interests A 384, pp. 322-332, 1997. Dr. Reiser’s research interests are in the S. K. Guharay, E. A. Soklovsky, M. Moon-Jhong Rhee general area of charged particle beams, Reiser, J. Orloff, J. Melngailis, Study of in particular the study of fundamental Energy Broadening of High-Brightness Professor, properties of beams and the design of Ion Beams from a Surface Plasma Ph.D., The Catholic particle accelerators and other devices. Penning Source and its Relevance in Ion University of America. His current research activities are Beam Projection Lithography,” Micro- focused on experimental and theoretical electronics Eng., vol. 35, pp.435-438, investigations of beams with strong 1997. space-charge forces and applications, C. Allen, M. Reiser, “Bunched Beam such as high-intensity accelerators (for Envelope Equations Including Image science, material research, and energy), Research Interests Effects from a Cylindrical Pipe,” Phys. high-power microwave generators, and Dr. Rhee’s research interests cover the Rev., vol. E55, pp. 7591-7605, 1997. free-electron lasers. This work includes broad area of charged particle beams, the self-consistent modeling of beams, J. G. Wang, H. Suk, M. Reiser, “Experi- beam qualities, pulsed power systems, the evolution of beam degradation, mental Investigtaion of the Resistive- plasma focus, and pseudospark dis- known as “emittance growth” due to Wall Instability for Localized Perturba- charge. mismatch, temperature anisotropy, tions in the Long-Wavelength Range,” His current research activities are instabilities, and other effects. Dr. Reiser Phys. Rev. Lett., vol. 79, pp. 1042-1045, centered around studies on pseudospark is also interested in ion beam lithogra- 1997. discharge. The pseudospark is a fast phy. M. Venturini and M. Reiser, “Self- low-pressure gas discharge between a The major results of this research over Consistent Beam Distributions with hollow cathode and a planar anode. the past two decades have been covered Space Charge and Dispersion in a Interesting phenomna associated with in the book Theory and Design of Charged Circular Ring Lattice,” Phys. Rev. E, vol. the discharge include fast spark-like Particle Beams, which was published in 57, 4725-4732, 1998. discharge and charged particle emission the fall of 1994 by Wiley and Sons. during the discharge. Such phenomena S. Bernal, P. Chin, R. A. Kishek, Y. Li, would find immediate applications in A new major research project, the M. Reiser, J. G. Wang, T. Godlove, I. fast switches, high-quality charged Electron Ring facility, is currently under Haber, “Transport of a Space-Charge particle beam sources, and beam source construction in the Institute for Plasma Dominated Electron Beam in a Short- for material processing. Systematic Research. It represents a unique quadrupole Channel,” Phys. Rev. Special experimental studies have been carried research tool to study the physics of Topics—Accelerators and Beams, Vol. 1, pp. out for the breakdown voltage charac- intense beams in recirculators, rings, 1-6, 1998. teristic, the electron beam current and bending systems for advanced scaling, energy spectrum of the electron accelerator applications. The Electron M. Venturini and M. Reiser, “Self- beam, the emittance and brightness of Ring serves as a small-scale, low-cost consistent Beam Distributions with the electron beam, and the post accel- model to study the beam behavior in Space Charge and Dispersion in a eration of the electron beam. Interesting much larger and more expensive ion Circular Ring Lattice,” Phys. Rev. E, Vol. experimental results obtained are acclerators (e.g. the new Spallation 57, pp. 4725-4732, 1998. expressed in empirical formula that Neutron Source for material science J. G. Wang and M. Reiser, “Longitudi- would be useful in understanding research in the federal budget for design nal Space-Charge Waves and Instabili- further the pseudospark phenomena. and construction over the next few ties in Intense Beams,” Physics of Currently, study of modeling the years). It provides a testbed for check- Plasmas, Vol. 5, pp. 2064-2070, 1998. pseudospark breakdown is underway ing advanced computer codes with based on the measured breakdown experiments and offers excellent M. Venturini and M. Reiser, “rms voltage characteristic that distinctively opportunities for graduate studies in an Envelope Equations in the Presence of differs from Paschen’s law. exciting field of science and technology. Space Charge and Dispersion,” Phys.

University of Maryland · Department of Electrical Engineering 79 University Service Professional service: Patterns in Images,” in Machine Learning Electrical Engineering: Facilities Co-ed., Machine Intelligence and Pattern and Data Mining—Methods and Applica- Committee; Coordinator for WWW. Recognition, Elsevier; Imaging Science and tions, R. S. Michalski, I. Bratko, and M. Engineering, SPIE Advisory Board; Ed. Kubat, eds., Wiley, Chichester, En- Azriel Rosenfeld Board: Information Sciences; Pattern gland, pp. 241-268, 1998. Recognition Letters; Pattern Recognition; N. Netanyahu, V. Philomin, Affiliate Professor, Computer Vision and Image Understanding; A.Rosenfeld and A. Stromberg, “Robust Ph.D. (Math), Image and Vision Computing; J. of Parallel Detection of Straight and Circular Road Columbia University. and Distributed Computing; Intl. J. of Segments in Noisy Aerial Images,” IEEE Fellow; ACM Robotics and Computer-Integrated Manufac- Pattern Recognition, vol. 30, pp. 1673- Fellow; Joint turing; Spatial Vision; Intl. J. of Intelligent 1686, 1997. Appointments with the Systems; Intl. J. of Computer Vision; J. of deparments of Visual Communication and Image Represen- A. Rosenfeld and A. Nakamura, “Local Computer Science, tation; IEICE (Japan) Transactions on Deformations of Digital Curves,” Pattern Psychology, and Engineering. Information and Systems; J. of Mathematical Recognition Lett., vol. 18, pp. 613-620, 1997. Research Interests Imaging and Vision; Intl. J. of Pattern Recognition and Artificial Intelligence; Intl. Prof. Rosenfeld’s research deals with A. Rosenfeld, “Illustrating Halakhah,” J. of Expert Systems; Applied Intelligence; J. many aspects of image analysis and BDD, vol. 6, pp. 17-26, 1998. of Systems Integration; Pattern Recognition computer vision, as well as geometry, and Image Analysis; Intl. J. of Imaging A. Rosenfeld, “Image Analysis and robotics, media, and other topics. Science and Technology; Real-Time Imaging; Computer Vision: 1997,” Computer Much of his research is on computer Intl. J. of Document Analysis and Recogni- Vision Image Understanding, vol. pp. 239- vision, or enabling computers “to see,” tion. IEEE Computer Dictionary 284, 1998. by recognizing and analyzing images. Project; IEEE Computer Society O. E. Kia, D. S. Doermann, A. Dr. Rosenfeld’s research in digital Awards Committee; IEEE Computer Rosenfeld and R. Chellappa, “Symbolic calculus involves the development of a Society Golden Core Member. Compression and Processing of Docu- “digital” function theory which treats University Service: ment Images,” Computer Vision Image “continuous” functions, “derivatives,” Director, Center for Automation Understanding, vol. 70, pp. 335-349, and “integrals” of functions on digital Research; Steering Committee, Neuro- 1998. spaces and establishes several of their sciences Program. A.Rosenfeld, T. Y. Kong, and A. basic properties. He has also studied Nakamura, “Topology-Preserving “digital” complex functions, which are Recent Publications R. Klette, A. Rosenfeld and F. Sloboda, Deformations of Two-Valued Digital functions from two-dimensional (2D) Pictures,” Graphical Models Image space into a 2D space. eds., “Advances in Digital and Compu- tational Geometry,” Springer, Processing, vol. 60, pp. 24-34, 1998. In addition, Dr. Rosenfeld is studying Singapore, 1998. S. Khuller, E. Rivlin, and A. Rosenfeld, an important problem in computer “Graphbots: Cooperative Motion vision: the decomposition of a shape R. Klette, A. Rosenfeld, and F. Sloboda, eds., “Digital Geometry—Introduction Planning in Discrete Spaces,” IEEE into parts. He has developed a low Trans. SMC, vol. 28C, pp. 2938, 1998. precision discrete method, based on the and Bibliography,” Advances in Digital 8-connected chain codes of the bound- and Computational Geometry, Springer, Z. Duric, E. Rivlin, and A. Rosenfeld, ary and coboundary of the shape, that Singapore, pp. 1-54, 1998. “Understanding Object Motion,” Image qualitativeley approximates PDE-based D. M. Mount and A. Rosenfeld, and Vision Computing, vol. 16, pp. 785- methods and avoids the singularity “Computational Geometry—A Subject- 797, 1998. problem. He has also experimented Classified Bibliography of Recent D. Doermann, E. Rivlin, and A. with other (nonlinear) types of bound- Research,” ibid., pp. 341--363. Rosenfeld, “The Function of Docu- ary evolution processes. D. Doermann, J. Sauvola, H. ments,” Image and Vision Computing, vol. Dr. Rosenfeld’s recent research includes Kauniskangas, C. Shin, M. Pietikainen, 16, pp. 799-814, 1998. digital geometry, robotic navigation, and A.Rosenfeld, “The Development of A. Y. Wu and A. Rosenfeld, “Geodesic range distributions, recognition of roads a General Framework for Intelligent Visibility in Graphs,” Information in aerial images, video segmentation Document Image Retrieval,” in Docu- Sciences, vol. 108, pp. 5-12, 1998. and compression, Intelligent Document ment Analysis Systems II, J. I. Hall and S. A. Rosenfeld. and C. Y. Sher, “Detect- Image Retrieval (IDIR), document L. Taylor, eds., World Scientific, ing Image Primitives Using Feature compression, and document functional- Singapore, pp. 433-460, 1998. ity. Pyramids,” Information Sciences, vol. 107, R. S. Michalski, A. Rosenfeld, Z. Duric, pp. 127-147, 1998. M. Maloof and Q. Zheng, “Learning

80 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology A. Rosenfeld, “Fuzzy Geometry: An Recent Publications ment. The goal is to develop network Updated Overview,” Information Sciences, J. Z. Simon, D. A. Depireux and S. A. management systems that can automati- vol. 110, pp. 127-133, 1998. Shamma, “Represention of Complex cally detect, isolate, and mitigate S. Fejes and A. Rosenfeld, “Migration Spectra in Auditory Cortex in Psycho- various faults that occur in a large Processes 1: The Continuous Case,” J. physical and Physiological Advances in communication network. The project Mathematical Imaging Vision, vol. 8, pp. Hearing,” Proc. 11th Intl. Symp. on uses tools from artificial intelligence as 5-25, 1998. Hearing 1997, A. R. Palmer, A. Ress, A. well as stochastic control theory. Q. Summerfield and R. Meddis, eds., Professional Service S. Fejes and A. Rosenfeld, “Migration Whurr Publishers (London), pp. 513- Processes 2: The Discrete Case,” J. 520, 1998. Co-organizer, National Security Agency Mathematical Imaging Vision, vol. 8, pp. Workshop on Network Management. 27-40, 1998. P. Ru and S. A. Shamma, “Representa- tion of Musical Timbre in the Auditory University Service L. J. Latecki and A. Rosenfeld, Cortex,” J. New Music Research, vol. 26, ISR: Assoc. Director of Education; Supportedness and Tameness: no. 2, pp. 154-169, 1997. Executive Committee. Electrical Differentialless Geometry of Plane Engineering: Chair, Faculty Search Curves,” Pattern Recognition, vol. 31, pp. Mark A. Shayman Committee; Department Council; 607-622, 1998. Human Relations and Welfare Commit- Professor, tee. Campus Senate; Graduate Commit- Shihab Shamma Ph.D., Harvard tee on Applied Mathematics, Interdisci- University. plinary Applied Mathematics Program; Professor, NSF Presidential Gemstone Program Advisory Commit- Ph.D., Stanford Young Investigator; tee; College of Engineering Council University. Joint Appointment with (ISR Representative). IEEE Senior Member; ISR. Recent Publications Joint Appointment Research Interests R. Kumar and M. A. Shayman, “Cen- with ISR. tralized and Decentralized Supervisory Dr. Shayman’s research interests are in Control of Nondeterministic Systems the general area of discrete event Under Partial Observation,” SIAM J. on Research Interests systems, control theory, and applica- Control and Optimization, vol. 35, pp. Dr. Shamma’s research over the last 15 tions to the management of communica- 363-383, 1997. years has dealt with issues in computa- tion networks. Discrete event systems tional neuroscience and the develop- (DES) are systems in which the vari- R. Kumar and M. A. Shayman, “Formu- ment of microsensor systems for ables take on discrete values which lae Relating Controllability, experimental research and neural change asynchronously at discrete Observability, and Co-observability,” prostheses. Primary focus has been on times. Many engineering systems can be Automatica, vol. 34, pp. 211-215, Febru- uncovering the computational prin- represented by DES’s; examples ary 1998. ciples underlying the processing and include communication networks, recognition of complex sounds (speech manufacturing systems, and transporta- Charles B. Silio, Jr. and music) in the auditory system, and tion systems. Within the field of DES’s, the relationship between auditory and he is particularly interested in the Associate Professor, visual processing. Other contributions supervisory control of such systems. He Ph.D., Notre Dame include the development of photolitho- has been involved in the development University. graphic microelectrode arrays for of a new framework for supervisory recording and stimulation of neural control which can be used to design signals, VLSI implementations of controllers for reactive systems as well auditory processing algorithms, and the as nondeterministic plants. By encapsu- development of algorithms for the lating sensor and actuator capabilities detection, classification, and analysis of with logic to form so-called process Research Interests neural activity from multiple simulta- objects, and using a single type of Dr. Silio’s research interests are in the neous sources. binary operator called masked composi- area of computer network architecture and performance evaluation. Multipro- Professional Service tion to interconnect process objects, it cessor interconnections using a fiber Action Editor, Journal of Computational shows promise of providing a founda- optic multiple access ring network with Neuroscience. tion for an object-oriented approach to discrete event control. a completely distributed, fault tolerant University Service control mechanism are being investi- Within network management, he is ISR Education Committee. gated. The investigation includes Monte primarily interested in fault manage- Carlo discrete event simulation and

University of Maryland · Department of Electrical Engineering 81 analytical modeling to predict perfor- David B. Stewart Khosla, “Design of Dynamically mance in varying configurations and to Reconfigurable Real-time Software make performance comparisons with Assistant Professor, Using Port-based Objects,” IEEE Trans. other networks. Designs for implemen- Ph.D., Carnegie Mellon on Software Engineering, vol. 23, no. 12, tation using fiber optic links and a University. pp. 759-776, December 1997. Joint Appointment with double ring fault-tolerant configuration M. Hassani and D. B. Stewart, “A UMIACS; Faculty in local area computer communication Mechanism for Communicating in Affiliate with ISR. networks are in progress. The reliability Dynamically Reconfigurable Embedded of fiber optic ring networks is also being Research Interests Systems,” Proc. IEEE Intl. Workshop on investigated. Work to date has concen- Dr. Stewart’s research interests are High Assurance Systems Engineering (HASE trated on obtaining closed form expres- centered around the combined area of 97), Washington, D.C., August 1997. sions to predict reliability of the fault- software engineering for embedded tolerant ring network configurations D. B. Stewart, “An I/O Device Driver real-time systems. He is interested proposed in the literature under various Model and Framework for Embedded primarily in advanced real-time operat- measures of reliability. FDDI network Systems,” Proc. IEEE Workshop on ing system technology and software structures are of particular interest. Middleware for Distributed Real-Time infrastructures that support the theory, Systems and Software (MDRTSS 97), San Professional Service design, implementation, and analysis of Francisco, December 1997. Associate Ed., Multiple-valued Logic and dynamically reconfigurable and reus- Intl. Journal; Session Chair, 27th Intl. able real-time software. Application Charles D. Striffler Symposium on Multiple-valued Logic; areas of interest include all types of IEEE Computer Society Technical multi-sensor systems, such as transpor- Professor and Associate Committee on Multiple-valued Logic tation systems, consumer electronics, Chair for Facilities and Elections Subcommittee. robotics, communications, and signal Services, University Service processing. Ph.D., University of College of Engineering Council; Current projects include the following: Michigan. Advisor, Maryland Beta Chapter, Tau (1) design of real-time operating system Beta Pi Association; Advisor, IEEE mechanisms to support reconfigurable Computer Society Student Chapter; component-based software on Research Interests Advisor, Engineering Honors Program; microcontrollers and digital signal Dr. Striffler’s general area of interest Ad Hoc Representative, Electrical processors; (2) error detection and within the plasma physics field involves Engineering Graduate Studies and handling in real-time systems; (3) intense relativistic electron beams and Research Committee. hardware/software co-design of a real- their uses. Specifically, he has been time operating system and an embed- Recent Publications involved in the theoretical analysis of ded microcontroller; (4) real-time multi- P. Hershey and C. B. Silio, Jr., “A New beam transport properties, the design agent systems; (5) automated analysis, Approach to Telecoms Network Man- and understanding of collective ion debugging, and fine-tuning of timing agement,” Telecommunications, vol. 31, acceleration systems, the design and properties in embedded systems. no. 8, pp. 53-57, August 1997. development of high-power microwave Professional Service and millimeter wave sources, and the H. M. Dao and C. B. Silio, Jr., “Condi- Local Arrangements Chair, HASE ’97; analysis of high-power switches as a tional Reliability of Ring Networks,” Local Arrangements Chair, COMPSAC source of high quality electron beams. Proc. 31st Annual Conf. on Information Sci. ’97; Program Co-Chair, HASE ’98. and Systems, vol. II, pp. 903-907, Most recently, his research has included Baltimore, Md., March 1997. University Service the upgrading of a state-of-the-art diode Electrical Engineering: Department design code to include all self-fields. To M. R. Henry, C. B. Silio, Jr., and A. B. Council; Computer and Facilities date, in various design codes, the self- Cooper III, “Packet Departure Rates in Committee; Salary Committee; Faculty electric fields have been included, but Ring Networks,” Proc. 31st Annual Conf. Search Committee; Director of Com- the self-magnetic fields have been on Information Sci. and Systems, vol. II, puting Search Committee; Ad-Hoc neglected. In intense beam diodes that pp. 942-947, Baltimore, Md., March Committee on development of ENEE involve substantial magnetic compres- 1997. 114. UMIACS Fellowship Selection sion, these self-magnetic fields appear to Committee; College of Engineering have a substantial effect on the proper- Committee on its World Wide Web ties of the beam. In addition, low presence. pressure gas breakdown behavior in a hollow cathode configuration has Recent Publications resulted in fast high-power switches and D. B. Stewart, R. A. Volpe, P. K.

82 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology a source of high quality electron beams. information theory; optimization and (CISS-97), March 1997. This so-called pseudospark discharge control of stochastic systems, distributed C. J. Su and L. Tassiulas, “Broadcast has been under investigation as an systems and algorithms. Scheduling for the Distribution of electron source, and he has been Professional Service Information Items with Unequal involved with numerical simulation INFOCOM 97 Technical Program Lengths,” Conf. on Information Sci. and studies of this system. Finally, he has Committee. Systems (CISS-97), March 1997. been interested in RF-plasma interac- tion where surface wave physics University Service C. J. Su and L. Tassiulas, “Designing dominates. Applications of this latter ISR: Graduate Studies Committee; Broadcast Schedules for Information study includes heating of plasmas by RF Masters of Systems Engineering Dissemination to Mobile Users,” Proc. of sources, and the propagation of RF Program Committee; Facilities Commit- INFOCOM97, Kobe, Japan, 1997. through the atmosphere. Various tee. Department of Electrical Engineer- O. Ercetin and L. Tassiulas, “Informa- nonlinear processes occur in these ing Graduate Studies and Research tion Delivery in Two-Stage Satellite systems and lead to radiation generation Committee Terrestrial Wireless Systems,” Proc. 2nd that can serve as a signature of the Recent Publications Conf. on Advanced Telecommunications specific process that is occurring. L. Tassiulas, “Worst Case Length of Information Distribution Research Pgm. Professional Service Nearest Neighbor Tours for the Euclid- (ATIRP), February 1998. DOE-SBIR, Phase I and II Grants ean Traveling Salesman Problem,” SIAM C. J. Su and L. Tassiulas, “Broadcast University Service J. Discrete Math., vol. 10, no. 2, pp. 171- Delivery with Limited Feedback,” Proc. 179, May 1997. Electrical Engineering: Associate Chair 2nd Conf. on Advanced Telecommunications for Facilities and Services; Dept. Chair L. Tassiulas, “Scheduling and Perfor- Information Distribution Research Pgm. Rep. on Department Comm., Facilities mance Limits of Networks with Con- (ATIRP), February 1998. and Services, Human Relations and stantly Changing Topology,” IEEE O. Ercetin and L. Tassiulas, “Satellite- Welfare; Dept. Rep. on College Comm., Trans. on Information Theory, vol. 43, no. Terrestrial Wireless Broadcast Net- Staff Service Award, Engineering 3, pp. 1067-1073, May 1997. works,” Proc. 2nd Conf. on Advanced Recognition Award; Dept. Rep. on P. Bhattacharya, L. Tassiulas and A. Telecommunications Information Distribu- Univ. Comm., Library Liaison. Direc- Ephremides, “Optimal Scheduling with tion Research Pgm. (ATIRP), February tor, CPS-STS Program. Deadline Constraints in Tree Net- 1998. Leandros Tassiulas works,” IEEE Trans. on Automatic Leonard S. Taylor Control, vol. 42, no. 12, pp. 1703-1705, 1997. Associate Professor, Professor Emeritus Ph.D., University of L. Georgiadis, W. Szpankowski, L. Ph.D., New Mexico Maryland. Tassiulas, “Stability Analysis of Quota State University. ONR Young Allocation Access Protocols in Ring Life Fellow, IEEE; Life Investigator; Joint Networks with Spatial Reuse,” IEEE Fellow, American Appointment with ISR. Trans. on Information Theory, vol. 43, no. Society for Laser 3, pp. 923-937, May 1997. Medicine and Surgery. Research Interests L. Tassiulas, C. J. Su, “Optimal Memory Research Interests Dr. Tassiulas’ research interests are in Management Strategies for a Mobile Dr. Taylor’s research interests lie in the general area of communications and User in a Broadcast Data Delivery applications of microwave radiation in systems with emphasis on: wireless System,” IEEE J. on Selected Areas in medicine, biology, and industry. access networks, progagation-based cell Communications, vol. 15, no. 7, pp. 1226- Particular projects have included the planning and dimensioning: channel 1238, 1997. invention and design of invasive and power control; digital signaling in a V. Tabatabaee, L. Tassiulas, “Robust applicators for cancer therapy (the cochannel interference environment; Routing in Networks of Mobile Radio needle radiator which is in wide use), multihop radio networks; transmission Nodes,” Proc. 1st Conf. on Advanced and the invention and design of micro- scheduling and packet routing; time- Telecommunications Information Distribu- wave coagulating devices for surgical varying topologies; satellite networks; tion Research Pgm. (ATIRP), pp. 305-307, use in liver and spleen surgery (success- power efficient management; high- January 1997. fully tested in human trials). Other work speed networks and ATM; architec- with medical applications has included tures; control and management; F. Rashid-Farrokhi, K. J. R. Liu and L. the design of miniature contact radiators multimedia traffic modeling; quality of Tassiulas, “Transmit Beamforming for for treatment of surface cancers. Other service guarantees for multimedia Cellular Wireless Communications,” theoretical and experimental studies traffic; multiuser communications and Conf. on Information Sci. and Systems completed have involved the use of

University of Maryland · Department of Electrical Engineering 83 microwaves in industrial diagnostic (IFAC Journal); 7th Symposium on Steven A. Tretter applications, such as a tool for deter- Computer Aided Control Systems mining the moisturization of human Design Intl. Program Committee; Associate Professor, skin by cosmetic moisturization prod- European Control Conference Intl. Ph.D., Princeton ucts, and in determining the thickness of Program Committee. 1999 IEEE University. fat in live cattle. A number of purely CACSD Conference Intl. Program Director, M.S. in theoretical studies have been completed Committee. Telecommunications which involve the possible applications University Service Program. of special wave types and wave genera- Electrical Engineering: Associate Chair tors in producing microwave beam for Graduate Studies and Research; Ex fields which can penetrate deeply into Research Interests officio member of the Graduate Studies tissue for possible medical applications. Dr. Tretter’s research interests are in the and Research Committee; Dept. Chair Recently, work is concentrated on the areas of communication systems and Representative, General Academic measurement of the dielectric permittiv- theory, digital signal processing, and Affairs Committee; Chair, Ad-Hoc ity of the components of bone at low error correcting codes. More specifi- committee to review the MS and Ph.D. microwave frequencies, a critical item in cally, he has been working on develop- degree requirements; Chair, Search the assessment of the penetration of ing DSP algorithms to use in wireline Committee for Academic Coordinator cellular telephone radiation into the modems. These include techniques for for Graduate Matters; Salary Commit- human cortex. adaptive echo cancellation, adaptive tee. ISR: Education Program Commit- equalization, carrier recovery and André L. Tits tee; APT Committee. University: tracking methods, nonlinear precoding Graduate Council; Ad-Hoc Committee techniques, and trellis coding methods on Computational Science; Search Professor, combined with shell mapping. Committee for University’s Chief Ph.D., University of Information Officer. He is also supervising the use of the California, Berkeley. DSP equipment and software donated IEEE Fellow; Recent Publications to the University of Maryland by Texas NSF Presidential V. Sahasrabudhe, R. Celi and A. L. Tits, Instruments when they designated us as Young Investigator; “Integrated Rotor-Flight Control System an Elite DSP Laboratory. He is helping Permanent Joint Optimization with Aeroelastic and various teams and individuals with the Appointment with ISR. Handling Qualities Constraints,” J. of details of how to use these resources. Guidance, Control and Dynamics, vol. 20, Research Interests University Service no. 2, pp. 217-224, March-April 1997. Dr. Tits’ main research interests lie in Electrical Engineering: Undergraduate various aspects of optimization-based A. L. Tits and V. Balakrishnan, “The Affairs Committee; Human Relations system design and robust control. The Small µm Theorem with Frequency and Welfare Committee; Director, former include theoretical questions in Dependent Norm Bound,” Proc. Euro- Cross-Disciplinary M.S. in Telecommu- numerical methods for optimization, pean Control Conf. (ECC97), Brussels, nications Program; Electrical Engineer- novel ideas and software for interactive Belgium, July 1997. ing Representative for the Professional optimization-based design, and applica- A. L. Tits and V. Balakrishnan, “Phase- Master of Engineering Program. tion of the above to the design of Sensitive Structured Singular Value,” electrical, chemical, and mechanical Proc. Workshop on Open Problems in Thirumalai Venkatesan systems. Current projects include the Mathematical Systems Theory and Control, development of a fast feasible algorithm pp.. 74-76, University of Liége, Belgium, Professor, for semi-infinite optimization, and the June 1997. Ph.D., State University development of graphical tools for of New York, Brooklyn. exploration of design trade-offs. His American Physical recent work in robust control has dealt Society Fellow; with both parametric and dynamic Joint Appointment with uncertainty, including contributions to Physics. the computation of the structured Research Interests singular value and of the real stability radius, and to robust pole assignment Dr. Venkatesan’s research program by state feedback. focuses on the science and applications of thin film based multi-component Professional Service materials of technological interest. Assoc. Ed. at Large, IEEE Trans. on Examples are high temperature super- Automatic Control; Assoc. Ed., Automatica conducting copper oxides, colossal

84 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology magneto-resistive manganites, ferroelec- Recent Publications Andronescu, A. A. Iliadis, K. A. Jones, tric oxides for high dielectric constant R. D. Vispute, V. Talyansky, R. P. S. Choopun, M. J. Downes, R. P. materials, and wide bandgap semicon- Sharma, S. Choopun, M. Downes, T. Sharma, Y. X. Li, L. G. Salamanca- ductors. The program includes growth Venkatesan, K. A. Jones, A. A. Iliadis, Riba, M. C. Wood, R. A. Lareau and T. of epitaxial thin films on a variety of M. A. Khan and J. W. Wang, “Growth Venkatesan, “PLD Epitaxial TiN substrates, characterization of the of Epitaxial GaN by Pulsed Laser Contacts to 6H-SiC and GaN,” 1997 composition, structure and the elec- Deposition,” Appl. Phys. Lett., Vol 71, MRS Proceedings on Gallium Nitride and tronic properties of these films and 1997. Related Materials, Boston, MA. fabrication of novel devices based on C. Kwon, S. E. Lofland, S. M. Bhagat, R. D. Vispute, V. Talyansky, S. the unusual properties of these layers. M. Rajeswari, T. Venkatesan, R. Choopun, R. Enck, T. Dahmas, S. B. Some active projects are: superconduct- Ramesh, A. R. Kratz and R. D. Gomez, Ogale, R. P. Sharma, T. Venkatesan, Y. ing spin injection transistors; resonant “Stress-Induced Surface Magnetization X. Li, L. G. Salamanca-Riba, A. A. quantum excitation in YBCO; Ion of LSMO Thin Films,” J. of Mag. and Iliadis, M. He, X. Tang, J. B. Halpern, Channeling studies of role of dynamic Mag. Mat., vol. 172, p. 229, 1997. M. G. Spencer, M. A. Khan and K. A. vibrations on transport properties of Jones, “Pulsed Laser Deposition of YBCO; colossal magneto-resistive Z. W. Dong, R. Ramesh, T. Venkatesan, Highly Crystalline GaN Films on Manganites and other oxides; CMOS M. Johnson, Z. Y. Chen, S. P. Pai, V. Sapphire,” 1997 MRS Proceedings on structures on wide band gap materials Talyansky, R. P. Sharma, R. Shreekala, Gallium Nitride and Related Materials, such as SiC, optical emitters based on C. J. Lobb and R. L. Greene, “Spin Boston, MA, 1997. GaN and ZnO. Polarized Quasiparticle Injection Devices Using Au/YBCO/LAO/ A. Gruverman, H. Tokumoto, A. S. Emphasis is on the physics of charge NSMO Heterstructures,” Appl. Phys. Prakash, S. Aggarwal, B. Yang, M. transfer in the cuprates and manganites, Lett., vol. 71, p. 1718, 1997. Wuttig, R. Ramesh, O. Auciello and T. vortex dynamics, and dynamics of Venkatesan, “Nanoscale Imaging of transport in a spin correlated system. I. Takeuchi, T. Wei, F. Duewer, Y. K. Domain Dynamics and Retention in The research programs emphasize Yoo, X.-D. Xiang, V. Talyansky, S. Pai, Ferroelectrics Thin Films,” Appl. Phys. training in the growth and characteriza- G. J. Chen, and T. Venkatesan, “”Low Lett., vol. 71, p. 3492, 1997. tion of thin films of complex materials, Temperature Scanning-Tip Microwave transport measurements, device Near-Field Microscopy of YBCO S. B. Ogale, K. Ghosh, R. P. Sharma, R. fabrication via different lithographic Films,” Appl. Phys. Lett., vol. 71, p. 2126, L. Greene, R. Ramesh and T. techniques, and device characterization. 1997. Venkatesan, “Magnetotransport Anisot- ropy Effects in Epitaxial Magnetite Understanding of the underlying I. Takeuchi, R. P. Sharma, S. Choopun, (Fe304) Thin Films,” Phys. Rev., Vol physical mechanisms behind the C. J. Lobb and T. Venkatesan, “Ion B.57, p. 1, 1998. fascinating properties of these materials Milling Damage and Regrowth of is a common thread connecting the Oxide Substrates Studied by Ion Uzi Vishkin various projects. Channeling and Atomic Force Micros- copy,” App. Phys. Lett., vol. 70, p. 3098, The facilities used are state of the art Professor, 1997. with seven pulsed laser film deposition D.S., Technion - Israel. systems, Rutherford backscattering Y. G. Zhao, S. B. Ogale, R. Shreekala, ACM Fellow; systems and X-ray diffractometers, Z. W. Dong, S. P. Pai, M. Rajeswari, T. Joint Appointment with atomic force microscopes, a number of Venkatesan, W. L. Cao, W. Lu and C. UMIACS. superconducting magnets for transport Lee, “Laser Power and Temperature measurements, and clean room for Dependence of the Transient device processing. Photoimpedence Response of Epitaxial Professional Service YBCO Thin Films,” J. Appl. Phys., vol. Research Interests Dr. Vishkin’s research interests are in Advisory panel: Applied Physics Letters; 83, p. 1531, 1997. the area of parallel algorithms and Industrial Physicist; ARPA; EPRI; NSF; H. Chen, R. D. Vispute, V. Talyansky, architectures. The main concrete DOE. Intl. Oxide Electronics Commit- R. Enck, S. B. Ogale, T. Dahmas, S. motivating question guiding his parallel tee; Chair, Fourth Intl. Oxide Electron- Choopun, R. P. Sharma, K. A. Jones, A. algorithms research has been “how to ics Workshop. A. Iliadis, L. G. Salamanca-Riba and T. think in parallel.” University Service Venkatesan, “Pulsed Laser Etching of This includes search for innovative Program Manager, Magnetic Oxide GaN and AlN Films,” 1997 MRS paradigms and methodologies for the Film Research at the UMD NSF Proceedings on Gallium Nitride and Related development of parallel algorithms. MRSEC on Oxides, Surfaces and Materials, Boston, MA. Work that he has done with this motiva- Probes. V. Talyansky, R. D. Vispute, S. N. tion is represented in textbooks on the

University of Maryland · Department of Electrical Engineering 85 design of algorithms. Chia-Hung Yang MOSFET with Channel Length to 10 nm,” IEEE Trans. Electron Devices, vol. He is also interested in contributing to Associate Professor, 45, p. 842, 1998. the development and understanding of Ph.D., Princeton underlying principles for the evolving University. Donald Yeung generation of parallel computer sys- tems, and their interplay with parallel Assistant Professor, algorithms. His most recent work on Ph.D., Electrical this fundamental interplay focuses on Engineering and instruction-level parallelism (ILP), Computer Science, which has become the leading technol- Research Interests Massachusetts Institute ogy in state-of-the-art commodity Dr. Yang’s research interests are in the of Technology. microprocessors. general area of semiconductors, includ- Joint Appointment with Professional Service ing the physics, fabrication techniques, UMIACS, Affiliate 11th IEEE Intl. Parallel Processing and their devices applications. One Appointment with Computer Science . Symposium (IPPS) Program Commit- project is to realize the world’s smallest tee; 5th Israel Symposium on Theory of transistors with channel length of the Research Interests Computing and Systems (ISTCS’97) order of 10 nm. The operating principle Donald Yeung joined the department Steering Committee; Ed. Board, Parallel of these new transistors is based on from the Massachusetts Institute of Processing Letters; Ed. Board, J. of quantum mechanical tunneling and new Technology, where he received his Algorithms; New Generation Computing electron transport phenomena in Ph.D. degree. His research interests are Advisory Board; Organizer, 17th reduced dimensions. The most signifi- in the general area of computer archi- Maryland Theoretical Computer cant feature of these new transistors is tecture, performance evaluation of Science Day; Third ACM Federal that they are much smaller than the computer systems, and the interaction Computing Research Conference ultimate scaling limit of conventional between architectures, operating (FCRC) Organizing Committee; MOSFETs. Another area is to study the systems, and applications. Specifically, General Chair, ACM-UMIACS transport and optical properties of he is investigating the architecture of Workshop on Parallel Algorithms semiconductor quantum dots, with cluster-based multiprocessor systems. (WOPA). emphasis on the role of hetero-inter- This research studies the design of faces and surfaces. shared memory coherence protocols University Service that leverage fine-grain communication Graduate Studies Research Committee; University Service support, such as those found in com- University of Maryland Senate. Electrical Engineering: Undergraduate modity SMPs, and hardware support for Affairs Committee; Graduate Studies Recent Publications such protocols as well as for efficient and Research Committee; Facilities communication between multiprocessor G. M. Landau and U. Vishkin, “Ap- Committee; Salary Review Committee. proximate String Matching,” Pattern nodes. Another important aspect of this Matching Algorithms, Alberto Apostolico Recent Publications research is the characterization of and Zvi Galil, eds., Oxford University W. E. Zhang, F. C. Wang and C. H. application behavior on such cluster- Press, pp. 185-199, 1997. Yang, “The Ultimate Scaling Limit of based systems. Semiconductor-Based Transistors,” S. M. Mueller and U. Vishkin, “Con- In addition, Yeung is also investigating Superlattice and Microstructures, vol. 22, p. flict-Free Access to Multiple Single- novel memory system designs that 417, 1997. Ported Register Files,” Proc. 11th IEEE address the widening gap between Intl. Parallel Processing Symp. (IPPS), F.-C. Wang, C. H. Yang, M. J. Yang, R. processor and memory system perfor- 1997. A. Wilson and D. Stone, “An InAs mance. This research studies how to Quantum Well Field-effect Transistor leverage application-specific informa- U. Vishkin, “From Algorithm Parallel- with 25 nm Channel Length,” Applied tion in the memory system in order to ism to Instruction-level Parallelism: an Phys. Lett., vol. 70, p. 3005, 1997. more efficiently manage data move- Encode-decode Chain Using Prefix- ment. Currently, a memory controller is sum,” Proc. 9th ACM Symp. on Parallel M. J. Yang, C. H. Yang, B. R. Bennett being designed that actively moves data Algorithms and Architectures (SPAA), p. and B. V. Shanabrook, “Evidence of a between main memory and processor 26-271, 1997. Hybridization Gap in Semimetallic buffers in a streaming fashion. The key InAs/GaSb Systems,” Phys. Rev. Lett., is in exposing data movement explicitly vol. 78, p. 4613, 1997. to the application and/or compiler so C. K. Huang, W. E. Zhang and C. H. that information about memory refer- Yang, “Two-Dimensional Numerical ence locality and data movement can be Simulation of a Schottky Barrier conveyed to the memory controller. An

86 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology important aspect of this research is the ultra low noise oscillators using dielec- Conductor Loaded Cavity Filters,” 1997 investigation of stream-based data tric resonators or cooled sapphire IEEE MTT-S Intl. Microwave Symp., pp. movement as a general data supply resonators; and (4) miniature filter 1103-1106, June 1997. technique for a broad class of data- banks realized using Low Temperature X. Zhang, C. Wang, K. A. Zaki and K. intensive applications. Cofired Ceramics (LTCC) for applica- S. Harshavardhan, “Dual Mode Patch tion in communications and advanced Superconductor Cavity Filters,” 1997 Kawthar A. Zaki radar systems. IEEE MTT-S Intl. Microwave Symp., pp. Professional Service 1725-1728, June 1997. Professor, 1997/98 IEEE MTT-S International Ph.D., University of H.-W. Yao, K. A. Zaki, A. E. Atia and T. Symposium Technical Program Com- California, Berkeley. Dolan, “Improvement of Spurious mittee; Organizer, IEEE International IEEE Fellow. Performance of Combline Filters,” 1997 Microwave Symposium. IEEE MTT-S Intl. Microwave Symp., pp. University Service 1099-1102, June 1997. Electrical Engineering: Chair, Graduate A. Bailey, W. Foley, M. Hageman, C. Studies Committee; Human Relations Research Interests Murray, A. Piloto, K. Sparks and K. A. and Welfare Committee. Zaki, “Miniature LTCC Filters for Dr. Zaki’s research interests are in the Digital Receivers,” 1997 IEEE MTT-S areas of modeling, simulation, and Recent Publications Intl. Microwave Symp., pp. 999-1002, Computer Aided Design (CAD) of C. Wang, K. A. Zaki and A. E. Atia, June 1997. microwave and millimeter wave “Dual-Mode Conductor-Loaded Cavity components and subsystems. Her Filters,” IEEE Trans. on Microwave Theory G. Roan and K. A. Zaki, “Calculation of current research activities are in the and Techniques, vol. 45, no. 8, pp. 1240- Losses in a Superconductive Resonator development of precise and efficient 1246, August 1997. Using FDTD,” 1997 IEEE AP-S Intl. numerical techniques for modeling R. Levy, H.-W. Yao and K. A. Zaki, Symp. and URSI North American Radio complex guiding and resonant electro- “Transitional Combline/Evanescent- Science Mtg., Montreal, Quebec, July magnetic structures. Mode matching Mode Microwave Filters,” IEEE Trans. 1997. techniques for the determination of on Microwave Theory and Techniques, vol. A. Piloto, D. Partlaw, C. Painter, S. generalized scattering matrices of 45, no. 12, pp. 2094-2099, December Tolle and K. A. Zaki, “Advanced LTCC structures that cannot be described by a 1997. Ferrite Technology for Low Cost Phase single coordinate system (e.g., cylindri- Shifters in Emerging RF Systems,” 1997 cal obstacles in rectangular enclosures) C. Wang, K. A. Zaki, A. E. Atia and T. Proc. Intl. Symp. on Microelectronics, are being used to affect reduction of two Dolan, “Conductor Loaded Resonantor October 1997. orders of magnitude in computation Filters with Wide Spurious-Free IEEE Trans. on Microwave times compared to direct numerical Stopbands,” R. Hersgtig, R. Levy and K. A. Zaki, Theory and Techniques solutions of Maxwell’s equations (e.g., , vol. 45, no. 12, pp. “Synthesis and Design of a Cascaded using finite element or finite difference). 2387-2392, December 1997. Trisection (CT) Dielectric Resonator As a result, CAD tools for the direct C. Wang, H.-W. Yao and K. A. Zaki, Filter,” 27th European Microwave Conf., optimization of practical structures such “Modeling of Conductor-Loaded September 1997. as filters, multiplexers, power dividers, Resonators and Filters in Rectangular K. A. Zaki and R. Hersgtig, “Trisection etc. are feasible on PC’s or workstations Enclosures,” IEEE Trans. on Microwave (CT) Combline and Dielectric Resona- that require seconds or a few minutes. Theory and Techniques, vol. 45, no. 12, pp. tor Filters,” Proc. 4th IEEE Intl. Conf. on The work is being applied for the 2479-2485, December 1997. Electronics, Circuits and Systems development of several practical C. Wang, H.-W. Yao and K. A. Zaki, (ICECS’97), vol. 1, pp. 159-163, Cairo, systems components, including: (1) filter “Modeling of Conductor Loaded Egypt, December 1997. networks with extremely demanding Resonators and Filters in Rectangular Y. Rong and K. A. Zaki, “Full Wave characteristics in the PCN and PCS Enclosures,” 1997 IEEE MTT-S Intl. Analysis of Cylindrical Combline wireless networks in the newly allocated Microwave Symp., pp. 797-800, June 1997. Resonators and Filters,” Proc. 4th IEEE frequency spectrum; coaxial, combine, C. Wang, K. A. Zaki, A. E. Atia and T. Intl. Conf. on Electronics, Circuits and and dielectric resonator structures are Dolan, “Conductor-Loaded Resonator Systems (ICECS’97), vol. 1, pp. 164-168, used for the realization of miniature Filters with Wide Spurious Free Stop Cairo, Egypt, December 1997. high quality filters; (2) tunable filters Band,” 1997 IEEE MTT-S Intl. Microwave using planar structures in superconduct- Symp., pp. 1079-1082, June 1997. ing materials; tunability is achieved by either magnetic (Yig) materials or by C. Wang, K. A. Zaki, A. E. Atia, “Dual varacter voltage controlled diodes; (3) Mode Combined Dielectric and

University of Maryland · Department of Electrical Engineering 87 Distinguished Lecturer Series

Each year, the Department of Electrical Erich Ippen Richard Karp Engineering invites prominent leaders Dr. Erich Ippen, Dr. Richard Karp, in electrical engineering to speak as part Professor of the Professor of Computer of its Electrical Engineering Department of Science and Distinguished Lecturer Series. Last Electrical Engineering and an year, the department hosted three Engineering and Adjunct Professor of Distinguished Lecturers. Computer Science Molecular Thomas Cover and the Department Biotechnology at the Dr. Thomas of Physics at the University of Cover, Kwoh- Massachusetts Washington, visited Ting Li Institute of Technology, visited the the department as part of its Professor of department on Friday, April 10, 1998, Distinguished Lecturer Series on Friday, Electrical as part of the Distinguished Lecturer March 20, 1998. Series. Engineering Karp gave a talk titled “Random and Statistics at Ippen delivered a talk titled Graphs, Random Walks, Differential Stanford “Femtosecond Optics,” covering what Equations and the Probabilistic Analysis University, he has described as a revolution in the of Algorithms.” He discussed three visited the department as a technology of ultrafast optics. He problems related to the probabilistic Distinguished Lecturer on Friday, discussed new techniques for generating analysis of algorithms: multiway October 24, 1997. femtosecond-duration optical pulses partitioning of a graph, the threshold for Cover delivered a talk titled “Universal over a wide range of wavelengths and k-orientability, and proofs of Data Compression and Investment.” He with compact all-solid-state systems, unsatisfiability for random 3-CNF discussed the use of the theory of data and new opportunities for scientific formulas. measurement—for optics in medicine compression in developing a universal Karp received his Ph.D. in Applied and for ultra-broadband optical investment algorithm that achieves the Mathematics from Harvard University. communications. same growth rate of wealth on stocks as The unifying theme in his research has the best constant rebalanced portfolio Ippen received his Ph.D. in Electrical been the study of combinatorial based on hindsight. In his talk, Cover Engineering from the University of at algorithms. Much of his subsequent demonstrated his theory by illustrating Berkeley California in 1968. His work has concerned the development of performance on the New York Stock research interests have included parallel algorithms, the probabilistic Exchange. nonlinear interactions in optical fibers, analysis of combinatorial optimization Cover is known for his work in dye lasers, semiconductor diode lasers, problems, and the construction of information theory, communication ultrashort pulse generation, randomized algorithms for theory and statistics. His 1972 paper on femtosecond optical techniques, and combinatorial problems. His current broadcast channels helped initiate studies of ultrafast processes in research is concerned with strategies for modern network information theory, materials and devices. Current research sequencing the human genome, the and he is the coauthor of the textbook, topics in his group involve femtosecond physical mapping of large DNA “Elements of Information Theory.” spectroscopy of solid-state materials, molecules, the analysis of gene ultrafast nonlinearities in semiconductor expression data, and other Cover received the 1990 Claude E. waveguides, and ultrashort-pulse optical combinatorial problems arising in Shannon Award in information theory, fiber devices. molecular biology. as well as the IEEE Neural Network Council's Pioneer Award in 1993 for his Ippen is a member of the National Karp has received the U.S. National work on the capacity of neural nets. He Academy of Sciences, the National Medal of Science, the Turing Award received the 1997 IEEE Richard M. Academy of Engineering and the (ACM), the Fulkerson Prize (AMS and Hamming medal for contributions to American Academy of Arts and Math. Programming Society), and the information theory, communication Sciences. He is a Fellow of the von Neumann Theory Prize (ORSA- theory and statistics, and is a member American Physical Society, the IEEE, TIMS). He is a member of the National of the National Academy of and the Optical Society of America. Academy of Sciences, the National Engineering. Academy of Engineering and the American Philosophical Society.

88 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Third Annual Research Review Day

The department hosted the third annual presentations within the department’s ered a talk titled “Multimedia Compres- review of its research and education facilities. sion: Applications on Wireless Channels programs, called the Research Review and the Internet.” Prof. P. S. Krish- The morning session started with an Day, on May 7, 1998. naprasad presented a talk titled “Con- introduction to the Department and trol and Sensing: From Smart Machines The day-long event, presented to College of Engineering by Prof. William to Smart Systems.” industry, government laboratories, Destler, Dean of the Clark School of media, and local universities, attracted Engineering. Prof. David Barbe, A buffet-style lunch was accompanied more than 160 people from around the Executive Director of the Engineering by speaker and Maryland alumnus Dr. country. Research Center, spoke next, providing Jeong Kim, Chairman and CEO of the attendees with a brief introduction to former Yurie Systems, now part of The Research Review day is designed to the Maryland Industrial Partnerships Lucent Technologies. Kim spoke about introduce local industry, government Program, which offers matching grants how he founded Yurie, and about the organizations, local universities and the to industry for research collaboration advantages of Yurie’s proximity to media to the department’s extensive with the Clark School. Ms. Heidi Maryland. and exciting research activities. Col- Sauber, Director of the Engineering Co- laborations with industry and govern- The afternoon session featured tours of op and Career Service Center, spoke ment organizations are emphasized, as the department’s laboratories, as well as about how the Clark School can help well as opportunities for future partner- more than 160 technical poster presen- industry and the government to recruit ships. Programs such as the tations, displayed by both faculty and students for internships, co-ops, and department’s Industrial Affiliates students. full-time employment. Program (see page 3 of this publication) help to facilitate this university/industry Three electrical engineering faculty interaction. members presented their research during the morning sessions. Prof. This year’s event featured a morning Christopher Davis gave a talk titled “It's session of talks, held at the University a Small, Small World: New Research in of Maryland University College Inn and Scanning Microscopy.” Nariman Conference Center, and an afternoon of Farvardin, Professor and Chair, deliv- laboratory tours and technical poster

Pictured: (left) Students Angelo Capili and Thomas Carley working on the Computer Controlled Electric Trains project, also pictured on the right. The project was voted by attendees as the Best Poster/ Demo of the Research Review Day. The project’s goal is to implement a computer controlled model train testbed on which to test new error handling and detection software architectures for embedded systems. This project also placed in the top ten of the 1998 Motorola University Design Contest for computer chip-based applications.

University of Maryland · Department of Electrical Engineering 89 In the News

In addition to the prestigious scientific journals that faculty members’ work appears in each year (see publications lists under each individual faculty member), last year the popular media began to recognize some of the outstanding research and educational accomplishments being made by the Department’s talented faculty and students as well. Articles about the Department’s activities appeared in The Washington Post, The Baltimore Sun, The Associated Press, the Journal for Higher Education, National Public Radio, the Washington Business News, the Tech Gazette, Radio Free China, Channel 13 Baltimore Live Morning Show, and the PG-TV Evening News.

The Clark School of School was ranked 8th Engineering at the among all graduate University of Maryland is programs in public the fastest rising institutions. engineering program in the The U.S. News and World country, according to the Report survey included 219 most recent graduate accredited programs, which program rankings by U.S. were ranked according to News and World Report. several measures of The Clark School’s academic quality. The graduate program was criteria for rankings were as ranked 13th in the nation follows, with the weights of last year, while just one each area in parenthesis: year ago it was ranked reputation (40%), faculty 18th, three years ago 25th, resources (25%), research and four years ago 37th. activity (25%), and student Significantly, the Clark selectivity (10%).

Pictured (left): Prof. Chia-Hung Yang created the world’s smallest transistor last year. The new transistor uses tunneling as the dominant conduction mechanism. Yang's team has fabricated a 25 nm transistor, and recently discovered how to make it as small as 10 nm. This research was featured in many print and broadcast publications, including The Washington Post (left). Pictured (right): Prof. David B. Stewart led a multidisciplinary design project in the department whose focus was to design a pinball machine. The finished project, called Comet Commander, was featured at the world pinball championships in Las Vegas, and was covered by many publications, including the Associated Press and The Baltimore Sun.

90 A. James Clark School of Engineering · Glenn L. Martin Institute of Technology Errata

This page contains corrections, modifications, and additions to the Department of Electrical Engineering's 1997-98 Annual Report.

Page 9 Ms. Julie O'Donnell's title appeared incorrectly. It should appear as Account Clerk II.

Page 43 In the table appearing on this page, the last contract for Prof. Steven Marcus appeared incorrectly. It should have been included under Prof. Isaak Mayergoyz's section. In addition, two more contracts/grants should have been included under Prof. Mayergoyz. The revised version of Prof. Mayergoyz's contracts and grants appears below:

Project Title Funding Source Amount Mayergoyz, Isaak Atomic Microscopy and Surface Science NSA $779,641 Magnetic Disk Remanence NSA $1,169,998 Mathematical Models of Hysteresis DOE $312,160 Semiconductor Device Analysis and Design NSA $340,338 Semiconductor Device Modeling NSF $344,721 Semiconductor Device Modeling SRC $60,000

Page 42 In the table appearing on this page, several items under Prof. Joseph Já Já's contracts/grants section appeared incorrectly. The revised version appears below:

Project Title Funding Source Amount Já Já, Joseph Acquisition of an ATM Network NSF $390,276 Advanced Ctr. For Global Remote Sensing Studies NASA $430,000 Connecting the Univ. of Maryland to vBNS NSF $350,000 Designing Practical Parallel Algorithms for Computing and Image Processing NSF $181,899 High Performance Computing for Remote Sensing Application NSF $46,200 NPACI - San Diego NSF $200,500 Performance & Mgmt. Of Distributed Heterogeneous Networks NSA $944,382

Page 41 In the table appearing on this page, two contracts/grants should have appeared under Prof. Neil Goldsman's heading. The revised version of Prof. Goldsman's contracts and grants appears below:

Project Title Funding Source Amount Goldsman, Neil Collaborative Research Between UMD and TCAD LSI Corp. $30,000 Devices and Circuits by Focused Ion Beam Implementation Tech. Dev. NSA $500,000 Focused Ion Beam Implanted Transistors for Integrated NSA $247,437 Semiconductor Device Analysis and Design NSA $340,338 Semiconductor Device Modeling NSF $344,721 Semiconductor Device Modeling SRC $60,000

P. 58 Prof. Evaggelos Geraniotis should have been listed as Professor, Ph.D., University of Illinois, Urbana-Champaign. Joint Appointment with ISR.

P. 41 In the table appearing on this page, several items under Prof. Evaggelos Geraniotis's contracts/grants section appeared incorrectly. The revised version appears below:

Project Title Funding Source Amount Geraniotis, Evaggelos Center for Satellite & Hybrid Communication Networks NASA $1,283,000 Collaborative Research on Feasibilty Study Telesystems $30,000 Design and Evaluation of 3rd Generation Wireless DS/CDMA Systems Hughes $30,000 DS/CDMA for High Data Rate SATCOM Naval Communication NAVY $120,000 Indoor Wireless Project NSF $399,986 Modulation and Coding Techniques for Atmospheric & Underwater Communication NAVY $616,085 Non-Gaussian Multi-Sensor Signal Processing & Exploitation of Wideband Signals NAVY $215,527 Power Control in a High Speed Wireless Network Architecture for Indoor Portable Phillips $40,000 Communications

ELECTRICAL ENGINEERING University of Maryland

A.James Clark School of Engineering

University of Maryland