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Antony Jameson Professor (Research), Department of Aeronautics and Astronautics Stanford University Stanford, California
Antony Jameson Professor (Research), Department of Aeronautics and Astronautics Stanford University Stanford, California For exceptional contributions to algorithmic innovation and the development of computational fluid dynamic codes that have made important contributions to aircraft design. The author of 444 scientific papers, Antony Jameson has made major contributions to many fields of aerospace science and technology, especially to the areas of computational fluid dynamics (CFD), control theory, and aerodynamics. In the words of the International Journal of CFD (November 2005): “Antony Jameson has had a huge impact on the field of Computational Fluid Dynamics for over four decades, opening up new avenues of research and developing tools to solve problems once thought beyond reach. From the formulation of a problem, to the development of the numerical technology to solve it, to the implementation of that technology in efficient tools and the fluid dynamical interpretation of results, Jameson has impacted most aspects of CFD.” Jameson is also credited with major breaKthroughs in the area of aerodynamic shape optimization, showing how CFD and control theory can be combined to allow designers to calculate optimum wing shapes which minimize drag and maximize performance. Jameson incorporated his numerical algorithms in two series of CFD codes: “FLO” (for flow analysis) and “SYN,” (for aerodynamic design) and both have played critical roles in developing some of the world’s most well-Known jetliners, including Airbus’ 320 and 330, as well as Boeing’s 737-500, 737-700, 747-400, and the 777. His work has advanced the state of CFD, with some noting that “many of the advances were propelled by the understanding, the algorithm technology, and the codes that were created by Jameson.” Aircraft manufacturers have universally used his codes for their CFD needs. -
Eigenvalue Distributions of Beta-Wishart Matrices
Eigenvalue distributions of beta-Wishart matrices The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Citation Edelman, Alan, and Plamen Koev. “Eigenvalue Distributions of Beta- Wishart Matrices.” Random Matrices: Theory and Applications 03, no. 02 (April 2014): 1450009. As Published http://dx.doi.org/10.1142/S2010326314500099 Publisher World Scientific Pub Co Pte Lt Version Author's final manuscript Citable link http://hdl.handle.net/1721.1/116006 Terms of Use Creative Commons Attribution-Noncommercial-Share Alike Detailed Terms http://creativecommons.org/licenses/by-nc-sa/4.0/ SIAM J. MATRIX ANAL. APPL. c 2013 Society for Industrial and Applied Mathematics Vol. XX, No. X, pp. XX{XX EIGENVALUE DISTRIBUTIONS OF BETA-WISHART MATRICES∗ ALAN EDELMANy AND PLAMEN KOEVz Abstract. We derive explicit expressions for the distributions of the extreme eigenvalues of the Beta-Wishart random matrices in terms of the hypergeometric function of a matrix argument. These results generalize the classical results for the real (β = 1), complex (β = 2), and quaternion (β = 4) Wishart matrices to any β > 0. Key words. random matrix, Wishart distribution, eigenavalue, hypergeometric function of a matrix argument AMS subject classifications. 15A52, 60E05, 62H10, 65F15 DOI. XX.XXXX/SXXXXXXXXXXXXXXXX 1. Introduction. Recently, the classical real (β = 1), complex (β = 2), and quaternion (β = 4) Wishart random matrix ensembles were generalized to any β > 0 by what is now called the Beta{Wishart ensemble [2, 9]. In this paper we derive the explicit distributions for the extreme eigenvalues and the trace of this ensemble as series of Jack functions and, in particular, in terms of the hypergeometric function of matrix argument. -
Matrix Algorithms: Fast, Stable, Communication-Optimizing—Random?!
Matrix algorithms: fast, stable, communication-optimizing—random?! Ioana Dumitriu Department of Mathematics University of Washington (Seattle) Joint work with Grey Ballard, James Demmel, Olga Holtz, Robert Kleinberg IPAM: Convex Optimization and Algebraic Geometry September 28, 2010 Ioana Dumitriu (UW) Matrix algorithms September 28, 2010 1 / 49 1 Motivation and Background Main Concerns in Numerical Linear Algebra Size issues 2 Reducing the flops Stability of FMM Stability of FLA Why Randomize? 3 Reducing communication Why is communication bad? Randomized Spectral Divide and Conquer Communication Costs 4 Conclusions Ioana Dumitriu (UW) Matrix algorithms September 28, 2010 2 / 49 Motivation and Background Main Concerns in Numerical Linear Algebra The big four issues in matrix algorithms. Accuracy of computation (how “far” the computed values are from the actual ones, in the presence of rounding error). Stability (how much the computed result will change if we perturb the problem a little bit). Speed/complexity (how many operations they require, e.g., multiplications). Parallelism (how to distribute the computation to multiple processors in order to optimize speed – if possible). Communication complexity (how to minimize the amount of back-and-forth between levels of memory or processors.) Ioana Dumitriu (UW) Matrix algorithms September 28, 2010 3 / 49 Motivation and Background Main Concerns in Numerical Linear Algebra The big four issues in matrix algorithms. Accuracy of computation (how “far” the computed values are from the actual ones, in the presence of rounding error). Stability (how much the computed result will change if we perturb the problem a little bit). Speed/flops complexity (how many operations they require, e.g., multiplications). -
The Random Matrix Technique of Ghosts and Shadows
The Random Matrix Technique of Ghosts and Shadows Alan Edelman November 22, 2009 Abstract We propose to abandon the notion that a random matrix has to be sampled for it to exist. Much of today's applied nite random matrix theory concerns real or complex random matrices (β = 1; 2). The threefold way so named by Dyson in 1962 [2] adds quaternions (β = 4). While it is true there are only three real division algebras (β=dimension over the reals), this mathematical fact while critical in some ways, in other ways is irrelevant and perhaps has been over interpreted over the decades. We introduce the notion of a ghost random matrix quantity that exists for every beta, and a shadow quantity which may be real or complex which allows for computation. Any number of computations have successfully given reasonable answers to date though diculties remain in some cases. Though it may seem absurd to have a three and a quarter dimensional or pi dimensional algebra, that is exactly what we propose and what we compute with. In the end β becomes a noisiness parameter rather than a dimension. 1 Introduction This conference article contains an idea which has become a technique. Perhaps it might be labeled a conjecture, but I think idea is the better label right now. The idea was discussed informally to a number of researchers and students at MIT for a number of years now, probably dating back to 2003 or so. It was also presented at a number of conferences [3] . As slides do not quite capture a talk, this seemed a good place to write down the ideas. -
Mathematics of Data Science
SIAM JOURNAL ON Mathematics of Data Science Volume 2 • 2020 Editor-in-Chief Tamara G. Kolda, Sandia National Laboratories Section Editors Mark Girolami, University of Cambridge, UK Alfred Hero, University of Michigan, USA Robert D. Nowak, University of Wisconsin, Madison, USA Joel A. Tropp, California Institute of Technology, USA Associate Editors Maria-Florina Balcan, Carnegie Mellon University, USA Vianney Perchet, ENSAE, CRITEO, France Rina Foygel Barber, University of Chicago, USA Jonas Peters, University of Copenhagen, Denmark Mikhail Belkin, University of California, San Diego, USA Natesh Pillai, Harvard University, USA Robert Calderbank, Duke University, USA Ali Pinar, Sandia National Laboratories, USA Coralia Cartis, University of Oxford, UK Mason Porter, University of Califrornia, Los Angeles, USA Venkat Chandrasekaran, California Institute of Technology, Maxim Raginsky, University of Illinois, USA Urbana-Champaign, USA Patrick L. Combettes, North Carolina State University, USA Bala Rajaratnam, University of California, Davis, USA Alexandre d’Aspremont, CRNS, Ecole Normale Superieure, Philippe Rigollet, MIT, USA France Justin Romberg, Georgia Tech, USA Ioana Dumitriu, University of California, San Diego, USA C. Seshadhri, University of California, Santa Cruz, USA Maryam Fazel, University of Washington, USA Amit Singer, Princeton University, USA David F. Gleich, Purdue University, USA Marc Teboulle, Tel Aviv University, Israel Wouter Koolen, CWI, the Netherlands Caroline Uhler, MIT, USA Gitta Kutyniok, University of Munich, Germany -
INGLE-NOOK STABLES STEERING RADIOS, RADIO-PHONOGRAPHS Woodbridge Ave., Avenel, N
.,y?.x •*"• -.-""• RARITAK >_ • MOST PROGRESSIVE AND TOWNSHIP WITH THE SUBURBAN NEWSPAPER LARGEST IN GUARANTEED THIS AREA CIRCULATION "TKe Voice of the Raritan Bay District VOL. VI.—No. 5 FORDS, N. J., FRIDAY, APRIL 25, 1941 PRICE THREE GENTS LIONS' CLUB FIRE TRUCK RARITAN TO FIGHT BAN ACTIVITIES CHASERS HITTOWN ACTS TO SET UP ON WOODBRIDGE HIGHWIN PRAISE BY SWALESHOME DEFENSE FORCES B. Of E. Plan To Send 100 Sports Program To Follow Parade Civic Program Is Lauded Chief Launches Attack On Termites Gnawing Up Fords Home; 120 Men Over 30 To Be In- Pupils There This Year By District Governor Motorists Who Try To ducted As Volunteer Win Race To Blaze Target Of Lowery Memorial Day Services In Raritan At Session Tuesday Township Sought As Exterminator Auxiliary Police Annual May 30 Activities To Take Place On Commons ORDERS MEN TO TAKE Michael Elko Claims Avaricious Bugs Have Habitat DECLARES FACILITIES In Piscatawaytown; Dancing Also To Be Featured BOWLING TEAM GIVEN OFFENDERS' NUMBERS In Nearby Swamp Which Bailey Promised To Fill MAYOR ISSUES ORDERS ARE NOT SUFFICIENT PISCATAWAYTOWN—Tentative arrangements for COUNTY LOOP TROPHY WOODBRIDGE—In case the Township Committee IN LINE WITH N. J, LA! a program of activitiea on Memorial Day, including the an- Perth Amboy Driver First didn't have enough to worry about in regard to com- County Superintendent De- nual parade and memorial services, were announced yes- Plans Launched For Hold- To Feel Sting Of Drive; plaints about road conditions it has a new type of com- Need Of Keeping High- terday by the special committee of Raritan Engine Com- plaint to contend with in Fords. -
2017-2018 Annual Report
Institute for Computational and Experimental Research in Mathematics Annual Report May 1, 2017 – April 30, 2018 Brendan Hassett, Director Mathew Borton, IT Director Jeff Brock, Associate Director Ruth Crane, Assistant Director Sigal Gottlieb, Deputy Director Elisenda Grigsby, Deputy Director Jeffrey Hoffstein, Consulting Associate Director Caroline Klivans, Associate Director Jill Pipher, Consulting Associate Director Bjorn Sandstede, Associate Director Homer Walker, Consulting Associate Director Ulrica Wilson, Associate Director for Diversity and Outreach Table of Contents Mission ....................................................................................................................................... 6 Core Programs and Events ......................................................................................................... 6 Participant Summaries by Program Type ................................................................................... 9 ICERM Funded Participants ................................................................................................................. 9 All Participants (ICERM funded and Non-ICERM funded) .................................................................. 10 ICERM Funded Speakers ................................................................................................................... 11 All Speakers (ICERM funded and Non-ICERM funded) ...................................................................... 12 ICERM Funded Postdocs .................................................................................................................. -
ANNOUNCEMENT of WINNERS of the Seventy-Ninth Competition Held on December 1, 2018
ANNOUNCEMENT OF WINNERS of the seventy-ninth competition held on December 1, 2018 WINNING TEAMS Rank School Team Members (in alphabetical order) 1 HARVARD UNIVERSITY Dongryul Kim, Shyam Narayanan, David Stoner 2 MASSACHUSETTS INSTITUTE OF TECHNOLOGY Junyao Peng, Ashwin Sah, Yunkun Zhou 3 UNIVERSITY OF CALIFORNIA, LOS ANGELES Ciprian Mircea Bonciocat, Xiaoyu Huang, Konstantin Miagkov 4 COLUMBIA UNIVERSITY Quang Dao, Myeonhu Kim, Matthew Lerner-Brecher 5 STANFORD UNIVERSITY David Kewei Lin, Hanzhi Zheng, Yifan Zhu The institution with the first-place team receives an award of $25,000, and each member of the team receives $1,000. The awards for second place are $20,000 and $800; for third place, $15,000 and $600; for fourth place, $10,000 and $400; and for fifth place, $5,000 and $200. In each of the following categories, the listing is in alphabetical order. THE PUTNAM FELLOWS — THE FIVE HIGHEST RANKING INDIVIDUALS Each receives an award of $2,500. DONGRYUL KIM Harvard University SHYAM NARAYANAN Harvard University DAVID STONER Harvard University YUAN YAO Massachusetts Institute of Technology SHENGTONG ZHANG Massachusetts Institute of Technology THE NEXT TEN HIGHEST RANKING INDIVIDUALS Each receives an award of $1,000. MURILO CORATO ZANARELLA Princeton University JIYANG GAO Massachusetts Institute of Technology ANDREW GU Massachusetts Institute of Technology JAMES LIN Massachusetts Institute of Technology MICHAEL MA Massachusetts Institute of Technology ASHWIN SAH Massachusetts Institute of Technology KEVIN SUN Massachusetts Institute of Technology DANIELLE WANG Massachusetts Institute of Technology HUNG-HSUN YU Massachusetts Institute of Technology YUNKUN ZHOU Massachusetts Institute of Technology THE WILLIAM LOWELL PUTNAM MATHEMATICAL COMPETITION ELIZABETH LOWELL PUTNAM PRIZE The winner receives an award of $1,000. -
2009 Mathematics Newsletter
AUTUMN 2009 NEWSLETTER OF THE DEPARTMENT OF MATHEMATICS AT THE UNIVERSITY OF WASHINGTON Mathematics NEWS 1 DEPARTMENT OF MATHEMATICS NEWS MESSAGE FROM THE CHAIR As you might imagine, 2009 brought Department’s work continued unabated. We have a string of unusual challenges to our department. good news to share with you in this newsletter, such as the There were uncertainties well into the UW Sophomore Medal awarded to Chad Klumb, the new- spring regarding our 2009-10 aca- found success of our students in the Putnam Competition, demic year budget. Graduate student the election of Gunther Uhlmann to the American Academy recruitment, which takes place across of Arts and Sciences, and the NSF CAREER award to Ioana the nation during the winter, was Dumitriu. Our undergraduate degree programs set new highs conducted without knowing the level at the end of the 2008-09 academic year with 368 Math of our TA funding. Similar scenarios majors, and with a total of 537 majors in Math and ACMS. played out nationally as few educational institutions were Thirteen graduate students completed the PhD, continuing spared by the financial crisis. In a survey conducted by the our recent trend of awarding significantly more PhDs than American Mathematical Society, mathematics departments the Department’s historical annual average of 6.5. reported about 900 expected faculty openings nationally, During the spring and summer, we received a boost of down from about 1,500 in a typical year, despite expecting federal funding, thanks to the excellent research projects to award 1,300 PhDs in 2009 as in recent years. -
Iliiieiican%Mlsellm
Iliiieiican%Mlsellm PUBLISHED BY THE AMERICAN MUSEUM OF NATURAL HISTORY CENTRAL PARK WEST AT 79TH STREET, NEW YORK 24, N.Y. NUMBER 1752 DECEMBER 28, 1955 Systematic Notes on Palearctic Birds. No. 17 Laniidae BY CHARLES VAURIE The following notes were made during a study of the present family for a proposed check list of the Palearctic region. Nine of the 14 species that occur in this region, or some of their races, are discussed: Lanius bucephalus, L. collurio, L. senator, L. vittatus (in which a new sub- species is described), L. schach, L. tephronotus, L. minor, L. excubitor, and Tchagra senegala. I am indebted and would like to express my ap- preciation to Mr. J. C. Greenway, Jr., of the Museum of Comparative Zoology for the loan of a critical type, and to Dr. D. Amadon for reading and criticizing the manuscript. Lanius bucephalus Bangs and Peters described a new race of this species from south- western Kansu in 1928 which they called salicarius. The new race is based on a single specimen and no additional one has apparently been collected or reported since. Through the courtesy of Mr. J. C. Greenway, Jr., I have been able to examine this specimen, which is an adult female in worn plumage collected in May. It represents a very distinct race dif- fering from female nominate bucephalus of which 30 specimens were examined by being, as stated by Bangs and Peters, much more exten- sively barred below, with the individual bars broader and blacker. The other differences cited by the authors of salicarius require comment. -
Consistency, Efficiency and Transparency in Investment Treaty Arbitration Report 2018 1 Preface1
DRAFT Consistency, efficiency and Consistency,Consistency,Consistency, efficiency andandand transparencytransparencytransparencytransparency ininin investmentinvestmentinvestmentinvestment treatytreatytreatytreaty arbitration arbitrationarbitrationarbitration OctoberOctober 20182018 OctoberNovember 2018 2018 A report by the IBA Arbitration Subcommittee on Investment Treaty Arbitration A report by the IBA Arbitration Subcommittee on Investment Treaty Arbitration AA report report by by the the IBA IBA ArbitrationArbitration SubcommitteeSubcommittee on InvestmentInvestment TreatyTreaty ArbitrationArbitration This is a draft version of the report. A final version, to undergo the full editorial process, will be published on the IBA Arbitration Committee’s project webpages in due course. Contents Preface 2 Summary of the 2016 Subcommittee report 3 Chapter 1: Consistency in investor-state arbitration 6 A solution to the status quo 7 An overhaul of the system? 23 Chapter 2: Efficiency in investor-state arbitration 36 Efficiency challenges before constitution of the tribunal (including settlement and alternative dispute resolution) 36 Efficiency challenges after constitution of the tribunal 49 Chapter 3: Transparency in international investment arbitration 53 Publication of arbitral awards, broadcasting of hearings and document production 54 Conclusion 64 Consistency, efficiency and transparency in investment treaty arbitration report 2018 1 Preface1 In 2014, the International Bar Association (IBA) Subcommittee on Investment Treaty Arbitration -
The Migration of the European Redshanks (Tringa Totanus (L.)). by FINN SALOMONSEN
94 The Migration of the European Redshanks (Tringa totanus (L.)). By FINN SALOMONSEN. (Med et dansk resume: De europæiske Rødbens (Tringa totanus (L.)) trækforhold.) The movements of the Redshank are rather well-known in Europe, where this species almost everywhere is a quite com mon bird. Recent ringing in Scandinavia, however, has revealed some new and interesting facts. The conclusions drawn in this paper are mainly based on the considerable number of recov eries of Scandinavian Redshanks. There are no less than 154 recoveries abroad of Redshanks ringed in Denmark. The cor responding figures for Sweden and N orway are 53 and 8, respectively. In most other countries ringing of Redshank has been carried out on a modest scale only. I am indebted to Dr. HANS JOHANSEN, Zool. Museum, Copenhagen, for giving me access to the ringing records of the Danish Redshanks not yet published, and to Dr. G. C. A. JUNGE, Rijksmuseum van Natuurlijke Historie, Leiden, to Prof. Dr. R. DROST, Vogelwarte Helgoland, Wilhelmshaven, and to Dr. H. HoLGERSEN, Stavanger Museum for various information about recoveries of Dutch, German and Norwegian Redshanks, respectively. I also wish to thank Mr. ERIK PETER SEN for carefully drawing the maps in this paper. The Danish Population. The Danish breeding stock leaves the country very early in the autumn, the adult as a rule in the latter half of July, the young birds usually not until August. Redshanks can be seen in small numbers until mid-September, but these birds are probably passage-migrants, coming from further north. Later in the autumn Redshanks are only exceptionally met with in Denmark, apart from Iceland birds (cf.