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What Made Bell Labs Special? Ley in Recent Years, the High Pay and Excellent Working Conditions at Bell Labs Attracted Many Who Might Look Elsewhere Today
physicsworld.com Christmas books Andrew Gelman What made Bell Labs special? ley in recent years, the high pay and excellent working conditions at Bell Labs attracted many who might look elsewhere today. Second, there was nothing to do at the labs all day but work. I have known lots of middle-aged profes- sors who don’t spend much time teaching but don’t do any research either. At Bell Labs it was harder to be deadwood. Located as it was in the middle of nowhere, the Murray Hill campus was not a place to relax, and if you were going into the lab every weekday anyhow, you might as well work – there was nothing better to do. Several researchers, including Shannon and Shockley, had sharp mid-career productivity declines – but after they left Murray Hill. In my own experience working at Bell Labs for three summers during Bell Laboratories/Alcatel-Lucent USA/AIP Emilio Segrè Visual Archives, Hecht Collection the 1980s, I vividly recall a general feeling of comfort and well-being, Innovation central Bell Labs was a legendary place, an Idea Factory. I say this not at all as a along with the low-level intensity Ali Javan (left) and industrial lab in the outer suburbs of criticism of its author, the journalist that comes from working eight-hour Donald R Herriott New York where thousands of scien- Jon Gertner; rather, there was just so days, week after week after week. work with a helium- tists, working nine to five, changed much going on at Bell that it cannot I did the research underlying my neon optical gas the world’s technological history. -
G.W.A.T.T. (Global 'What If' Analyzer of Network Energy Consumption)
G.W.A.T.T. New Bell Labs application able to measure the impact of technologies like SDN & NFV on network energy consumption WHITE PAPER Increased energy consumption is a key challenge for the Information and Communications Technologies (ICT) industry. Network energy bills represent more than 10 percent of operators’ operational expenses. With the advent of the Internet of Things era, and the inexorable consumption of video and cloud services promising to drive massively increased traffic across networks, it is even more important for operators to have a complete view of the energy impact of different technology and architectural evolution options. G.W.A.T.T. (Global “What if” Analyzer of NeTwork Energy ConsumpTion) has been built to allow operators and industry stakeholders to better understand these challenges. This application visualizes the current and future communication networks and forecasts key trends in energy consumption, energy efficiency, cost and carbon emissions based on a wide variety of traffic growth scenarios and technology evolution choices. It is intended as a mind-sharing tool to grasp the importance of the energy challenge and how innovation and new technologies can help address these issues in the future. EXECUTIVE SUMMARY The explosion of the Internet traffic volume resulting from both the worldwide broadband subscriber base extension and the increasing number and diversity of available applications and services require a relentless deployment of new technologies and infrastructures to deliver the expected user-experience. At the same time, it also raises the issue of the energy consumption and energy cost of the Internet and more generally of the Information and Communication Technologies (ICT). -
DTMF Control System
P a g e | 38 Vol. 10 Issue 11 (Ver. 1.0) October 2010 Global Journal of Computer Science and Technology A2Z Control System- DTMF Control System Er. Zatin Gupta1, Payal Jain2 , Monika3 GJCST Classification (FOR) H.4.3 Abstract-Dual Tone Multi Frequency (DTMF) technique for c) Microcontroller (At89s52) controlling the domestic and industrial appliances is being presented in this paper. A simple mobile phone which works on Microcontroller is the control unit of this system. We have DTMF tone, used to control the domestic as well as industrial used AT89S52. It is low power, high performance CMOS 8- electrical appliances which with the control system which we Bit controller with 4K bytes of ROM and 128 bytes of RAM. have designed here for experimental study. In recent state of affairs, domestic, military and industrial applications use this d) Dtmf Signal technique because it can be operated from remote location. Radio frequency (RF) is also used for wireless communication but DTMF is most widely known method of Multi Frequency DTMF is an alternate for RF. Mobile phone is used to send the Shift Keying (MSFK) data transmission technique. DTMF DTMF code from remote location to the control system. The was developed by Bell Labs to be used in the telephone blocks of system are mobile phone, Microcontroller (AT89S52), system. Most telephones today uses DTMF dialing (or “tone” DTMF Decoder (MT8870D), Relays and power supply. This dialing). paper shows the working areas where the system is applicable and how it has advantages over RF. 1209 1336 1477 1633 Hz Hz Hz Hz I. -
Measurement of the Cosmic Microwave Background Radiation at 19 Ghz
Measurement of the Cosmic Microwave Background Radiation at 19 GHz 1 Introduction Measurements of the Cosmic Microwave Background (CMB) radiation dominate modern experimental cosmology: there is no greater source of information about the early universe, and no other single discovery has had a greater impact on the theories of the formation of the cosmos. Observation of the CMB confirmed the Big Bang model of the origin of our universe and gave us a look into the distant past, long before the formation of the very first stars and galaxies. In this lab, we seek to recreate this founding pillar of modern physics. The experiment consists of a temperature measurement of the CMB, which is actually “light” left over from the Big Bang. A radiometer is used to measure the intensity of the sky signal at 19 GHz from the roof of the physics building. A specially designed horn antenna allows you to observe microwave noise from isolated patches of sky, without interference from the relatively hot (and high noise) ground. The radiometer amplifies the power from the horn by a factor of a billion. You will calibrate the radiometer to reduce systematic effects: a cryogenically cooled reference load is periodically measured to catch changes in the gain of the amplifier circuit over time. 2 Overview 2.1 History The first observation of the CMB occurred at the Crawford Hill NJ location of Bell Labs in 1965. Arno Penzias and Robert Wilson, intending to do research in radio astronomy at 21 cm wavelength using a special horn antenna designed for satellite communications, noticed a background noise signal in all of their radiometric measurements. -
Switching Relations: the Rise and Fall of the Norwegian Telecom Industry
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by NORA - Norwegian Open Research Archives Switching Relations The rise and fall of the Norwegian telecom industry by Sverre A. Christensen A dissertation submitted to BI Norwegian School of Management for the Degree of Dr.Oecon Series of Dissertations 2/2006 BI Norwegian School of Management Department of Innovation and Economic Organization Sverre A. Christensen: Switching Relations: The rise and fall of the Norwegian telecom industry © Sverre A. Christensen 2006 Series of Dissertations 2/2006 ISBN: 82 7042 746 2 ISSN: 1502-2099 BI Norwegian School of Management N-0442 Oslo Phone: +47 4641 0000 www.bi.no Printing: Nordberg The dissertation may be ordered from our website www.bi.no (Research - Research Publications) ii Acknowledgements I would like to thank my supervisor Knut Sogner, who has played a crucial role throughout the entire process. Thanks for having confidence and patience with me. A special thanks also to Mats Fridlund, who has been so gracious as to let me use one of his titles for this dissertation, Switching relations. My thanks go also to the staff at the Centre of Business History at the Norwegian School of Management, most particularly Gunhild Ecklund and Dag Ove Skjold who have been of great support during turbulent years. Also in need of mentioning are Harald Rinde, Harald Espeli and Lars Thue for inspiring discussion and com- ments on earlier drafts. The rest at the centre: no one mentioned, no one forgotten. My thanks also go to the Department of Innovation and Economic Organization at the Norwegian School of Management, and Per Ingvar Olsen. -
Design of a Circuit for Remote Control of Multiple Devices Using DTMF Encoder and Decoder
International Journal of Scientific and Research Publications, Volume 3, Issue 12, December 2013 1 ISSN 2250-3153 Design of a Circuit for Remote Control of Multiple Devices using DTMF Encoder and Decoder Haimanti Chakraborty*, Prof. (Dr.) Prabir Banerjee* * Department of Electronics & Communication Engineering, Heritage Institute of Technology, Kolkata, India frequencies that will be transmitted via an analog communication Abstract- With the advancement in technology, the number channel or network like a telephone line. It was developed of electronic devices in our day-to-day lives has increased to by Western Electric and introduced by AT&T in 1963. During its make life simpler. So a necessity to construct a Universal development, unique individual frequency filters were chosen Remote System that will easily control all these devices from a carefully so that the tones could easily travel via the telephone distance will not only reduce the complexity of handling the lines (the maximum guaranteed bandwidth for a standard number of devices simultaneously, but also save power. telephone line extends from around 300 Hz to 3.5 kHz). DTMF This paper presents a successfully developed hardware was not intended for data transfer, rather for control signals only. of a Universal Remote Control System using DTMF (Dual- With a standard DTMF encoder/decoder, it is possible to signal Tone Multi-Frequency) tones as the control signals. The at a rate of around 10 tones/signals per second. uniqueness of DTMF is that it is simple to generate and noise- The DTMF keypad is laid out in a 4x4 matrix, with two immune. This system was also implemented using GSM links frequencies (each row representing a low frequency and each besides the wired channel, the main advantage of it being that it column representing a high frequency) played simultaneously by helps in controlling devices located at any part of the world or a standard home phone/fax or mobile phone. -
The American Telephone and Telegraph Company Divestiture: Background, Provisions, and Restructuring
Report No. 84-58 E I -. <I?....*- ".YII. -n, -- THE AMERICAN TELEPHONE AND TELEGRAPH COMPANY DIVESTITURE: BACKGROUND, PROVISIONS, AND RESTRUCTURING b Y Angele A. Gilroy Specialist in Industrial Organization Economics Division COLLECTION WKI HEKN !CNTUCKY LIBRARY April 11, 1984 11 i :::A L.'~~-l.ii.e makes jucn research available. without parti- ::;I.. in lr:m\ !orrns inc!uding studies. reports. cornpila- ;,)I!., I!:<?\[>. :md l:a~kqroi~ndhrietings. Cpon request. CRS .. ., :i ~ !>!r::z:rrir.e.;in ann1~-zingle+slative proposals and -tl:..b. :!nd in s>w;sinq the possible effects of these proposals . < :!I irie.The Ser~ice'ssenior specialists and ii,:c( r :iil.,;ii ?is are also at-aiiable for personal consultations ;xi-ir :.t>.;!?ecri\-elieid.; t~f'expertise. ABSTRACT On January 1, 1984, The American Telephone and Telegraph Company (AT&T) di- vested itself of a major portion of its organizational structure and functions. Under the post-divestiture environment the once fully-integrated Bell System is now reorganized into the "new" AT&T and seven Ladependent regional 5olding ?om- panies -- American Information Technologies Corp., 3ell Atlantic Corp., 3ell- South Corp., NYNEX Corp., Pacific Telesis Group., Southwestern Bell Corp., and U.S. West, Inc. The following analysis provides an overview of the pre- and post-divestiture organizational structure and details the evolution of the anti- trust action which resulted in this divestiture. CONTENTS ABSTRACT ................................................................ iii INTRODUCTION ............................................................ 1 1 . BELL SYSTEM CORPORATE REORGANIZATION .............................. 3 A . Predivestiture Bell System Corporate Structure ................ 3 B . Divested Operating Company Structure .......................... 5 C . Post-Divestiture AThT Organizational Structure ................ 7 11. -
I : the Discovery of the Cosmic Microwave Background
Class 19 : The cosmic microwave background and the “Hot Big Bang” theory Discovery of the cosmic microwave background Basic idea of the Hot Big Bang I : The discovery of the cosmic microwave background Penzias & Wilson (Bell-Labs) 1 Arno Penzias & Robert Wilson (1964) Were attempting to study radio emissions from our Galaxy using sensitive antenna built at Bell-Labs Needed to characterize and eliminate all sources of noise They never could get rid of a certain noise source… noise had a characteristic temperature of about 3 K. They figured out that the noise was coming from the sky, and was approximately the same in all directions… The COBE mission Built by NASA-Goddard Space Flight Center Launched Nov. 1989 Purpose was to survey infra-red and microwave emission across the whole sky. Primary purpose – to characterize the CMB. Had a number of instruments on it: FIRAS (Far infra-red absolute spectrophotometer) DMR (Differential Microwave Radiometer) DIRBE (Diffuse Infrared background Experiment) 2 Our Galaxy observed by the DIRBE instrument on COBE 3 Almost uniform intensity of microwaves in all directions (isotropic 2.7K black body radiation) 4 Subtracting off the mean level leaves with a “dipole” pattern… what is this?? Subtracting off the dipole finally reveals the emission from the Galaxy that Penzias and Wilson were looking for! 5 Subtracting contribution from Galaxy reveals fluctuations in the CMB WMAP (2004) 6 II : The hot big bang model Penzias & Wilson had discovered radiation left over from the early universe… The hot big bang model… Independently developed by James Peebles and George Gamov They suggested that the universe started off in an extremely hot state. -
MAS.632 Conversational Computer Systems
MIT OpenCourseWare http://ocw.mit.edu MAS.632 Conversational Computer Systems Fall 2008 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms. 10 Basics of Telephones This and the following chapters explain the technology and computer applica tions oftelephones, much as earlier pairs ofchapters explored speech coding, syn thesis, and recognition. The juxtaposition of telephony with voice processing in a single volume is unusual; what is their relationship? First, the telephone is an ideal means to access interactive voice response services such as those described in Chapter 6. Second, computer-based voice mail will give a strong boost to other uses of stored voice such as those already described in Chapter 4 and to be explored again in Chapter 12. Finally, focusing on communication,i.e., the task rather than the technology, leads to a better appreciation of the broad intersec tion of speech, computers, and our everyday work lives. This chapter describes the basic telephone operations that transport voice across a network to a remote location. Telephony is changing rapidly in ways that radically modify how we think about and use telephones now and in the future. Conventional telephones are already ubiquitous for the business traveler in industrialized countries, but the rise in personal, portable, wireless telephones is spawning entirely new ways of thinking about universal voice connectivity. The pervasiveness of telephone and computer technologies combined with the critical need to communicate in our professional lives suggest that it would be foolish to ignore the role of the telephone as a speech processing peripheral just like a speaker or microphone. -
Complete Distinguished Alumni List
Community College League of California Distinguished Alumni Awardees Allan Hancock College 1988 - Robert Mange - Principal, Folsom Junior High School 2002 - Owen W. Siler - Admiral, United States Coast Guard (Retired) 2010 - Kay Ryan - Poet Laureate, Consultant in Poetry (emeritus) American River College 2016 - Diane Bryant - Executive Vice President/General Manager, Data Center Group, Intel Corporation Bakersfield College 1964 - Walter W. Stiern - Senator, State of California 1969 - David E. Smith - Medical Director, Haight-Ashbury Medical Clinic 1971 - Ruth Love Holloway - Director, Right to Read Program, US Office of Education 1973 - Jack C. Smith - Columnist, Los Angeles Times 2005 - Beto Gonzalez - Deputy Assistant Secretary, Office of Vocational and Adult Education, U.S. Department of Education Barstow College 2000 - Gloria Romero - Assembly Majority Whip 49th District 2010 - Joe Baca - Congressman, United States Congress Butte College 2000 - Kenneth Grossman - President Sierra Nevada Brewing Cañada College 1994 - Anna G. Eschoo - Member of Congress, 14th Congressional District Cerritos College 1985 - JoJo Starbuck - Olympic and Professional Figure Skater 2015 - Peter Espinoza - Judge, Los Angeles County Superior Court Chabot College 1992 - Tom Hanks - Actor 1996 - Peggy Hora - Judge, Municipal Court 2003 - Marcy Feit - President & CEO, ValleyCare Health Systems Chaffey College 1972 - William A. Walk, Jr. - Attorney and Civic Leader 1985 - Howard Allen - Chairman of the Board, Southern California Edison 1995 - Hebert Hafif - Attorney at Law 2006 - Beverly Cleary - Author Citrus College 1980 - Gordon L. Hough - Chair of the Board, Pacific Telephone & Telegraph 1990 - Ward Munson - President (Retired), Munson Sporting Goods 2014 - Ivan Misner - Founder and Chairman, BNI City College of San Francisco 1969 - George J. Maslach - Dean of Engineering, UC Berkeley 1973 - Andrew S. -
WE Inter-Phones and Accessories 1915
• ,..--·~! l ? -/ t F .L_:"""; ..... ~ 1915 , . / -, iEl1@~;t!?ll~ ," cMQ)JNIE~ TCI Library: www.telephonecollectors.info Page 1 }H1sll'rn #.£/,rlrit COMPANY Inter-phones and Accessories "INTER-PHONE" is the trade name adopted by the Western Electric Company for what is commonly known as Intercommunicating Telephone Apparatus. On the following pages will be found much information of value. "e have avoided, as far as possible, the use of general or descriptive information, and have endeavored to condense all data given. Wiring diagrams are also shown. Three general types of Inter-phones-\\all, desk, and hand-set types-are furnished. Under each system are listed the types adapted for the service described. INTER-PHONE SYSTEMS The various systems for which Inter-phones are adapted are as follows: HOUSE TELEPHONE SYSTEM. Multi-station, one or two-way service. Two to three line wires. System No. 16, list on page 3. ___ TWO STATIONS ONLY. Two line wires. Batteries at each station. System No. 14, listed on page 6. TWO TO SIX STATIONS. Code ri"gings-common talking. Three to foUl' line wires. Batteries at one station only. ,-,ystem No. 15, listed on page 7. THREE TO NINE STATIONS. Selective ringing. Common talking. Batteries at one s a ion only. System TO. 11, lis on page 11. MASTER STATION and not more than twelve outlying stations. Batteries at mas er s ation only. System Ko. 12 lis~ed on page 13. NOT MORE THAN TWENTY-FOUR STATIONS. Selective ringing and talking be tween all stations. System :;\0. 1, listed on page 18. A SYSTEM ALLOWING SECRET CONVERSATIONS between certain stations, being a modification of System No. -
Sasaki-Proposal.Pdf
CAMBRIDGE CITY WIDE MASTER PLAN June 25, 2015 | File Number: 6848 HARMONIOUS CACOPHONY, THE IDEA OF CELEBRATING DIVERGENCE TO SEEK UNITY, INFUSES ITSELF THROUGH THE FOLLOWING PAGES AND INSPIRES OUR APPROACH TO THIS EFFORT FOR CAMBRIDGE. Amy L. Witts Purchasing Agent City of Cambridge Purchasing Department 795 Massachusetts Avenue, Third Floor Cambridge, Massachusetts 02139 Dear Ms. Witts, Thank you for the opportunity to submit this response to the Cambridge City Wide Planning Request for Qualifications. This letter describes the Sasaki team composition, the reasons we are interested in the Cambridge Citywide master plan and why we believe our team brings the ideal balance of creativity and practicality to the effort. As leaders in Sasaki’s Urban Studio, our practice is characterized by an interdisciplinary collaborative of innovative minds, all focused on improving the quality of life in American urban centers. The core tenets of our work are partnerships with our clients toward shared outcomes, meaningful and memorable community outreach, data-driven analysis, well-defined implementation strategies, and transformation through visionary planning and design. We believe that America’s urban centers are critical to long- term environmental, economic and social sustainability. Cambridge is undeniably an incredibly special community, and already a model of what many cities around the globe strive to achieve. Yet, cities cannot be content amid today’s successes; evolution is necessary for long term sustainability. Today, challenges for Cambridge exist, particularly around equity, resilience, transportation systems, and community health, among other issues. We believe this plan is an opportunity to integrate the many future-looking efforts already underway, build consensus, and create an inspired vision for the next decades.