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United States Advanced Research Projects Agency

Overview
Works: 1,764 works in 2,342 publications in 1 language and 16,078 library holdings
Genres: Conference papers and proceedings  Charts, diagrams, etc 
Roles: Researcher, Funder, Sponsor, Producer, Editor, Other
Classifications: QC100, 621.381045
Publication Timeline
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Publications about United States
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Most widely held works by United States
Object representation in computer vision : International NSF-ARPA Workshop, New York City, NY, USA, December 5-7, 1994 : proceedings by Martial Hebert( Book )
4 editions published in 1995 in English and held by 265 libraries worldwide
This book documents the scientific outcome of the International NSF-ARPA Workshop on Object Representation in Computer Vision, held in New York City in December 1994 with invited participants chosen among the recognized experts in the field. The volume presents the complete set of papers in revised full-length versions. In addition, the first paper is a report on the workshop in which the panel discussions as well as the conclusions and recommendations reached by the workshop participants are summarized. Altogether the volume provides an excellent, in-depth view of the state of the art in this active area of research and applications
Mass transport in oxides; proceedings of a symposium held at Gaithersburg, Maryland, October 22-25, 1967 by J. B Wachtman( Book )
4 editions published in 1968 in English and held by 179 libraries worldwide
Analysis of random drop for gateway congestion control by Eman Salaheddin Hashem( Book )
1 edition published in 1989 in English and held by 174 libraries worldwide
The growing demand on the Internet has prompted the need for more effective congestion control policies. Currently No Gateway Policy is used to relieve and signal congestion, which leads to a degradation of overall network performance. This thesis uses network simulation to illustrate the character of Internet congestion and its causes. It considers a newly proposed gateway congestion control policy, called Random Drop, as a promising solution. Random Drop relieves resource congestion upon buffer overflow by choosing a random packet from the service queue to be dropped. The random choice should result in a drop distribution proportional to the bandwidth distribution among all contending TCP connections. The simulation experiments demonstrate several shortcomings with this policy. Because Random Drop is a congestion control policy, which is not applied until congestion has already occurred, it usually results in a high drop rate that hurts too many connections including well- behaved ones. A modification of Random Drop to do congestion avoidance by applying the policy early was also proposed. Early Random Drop to do congestion avoidance by applying the policy early was also proposed. Early Random Drop has the advantage of avoiding the high drop rate of buffer overflow. The early application of the policy removes the pressure of congestion relief and allows more accurate signaling of congestion. Algorithms for the dynamic adjustment of the parameters of Early Random Drop to suite the current network load must still be developed. Keywords: Computer communications; Data transfer; Computer communications network
An approach to replicated databases for robust command and control by Iris Kameny( Book )
3 editions published between 1995 and 1996 in English and held by 148 libraries worldwide
This report presents an approach to making future command and control data more timely and robust through the use of replicated distributed data management techniques. The types of command and control data that we address in this report include "situational awareness" data needed by Army tactical commanders from platoon through corps, including mission plan and progress, represented as machine-processable operation orders (OPORDs), enemy situation, and friendly situation and status. The concepts presented here were developed in answer to common objectives in two projects, a Distributed Databases project for the Advanced Research Projects Agency (ARPA) of the Department of Defense (DoD), and a project addressing the Management of Information for Joint and Combined Operations for the Army Office of the Director of Information Systems for Command, Control, Communications, and Computers (ODISC4). The report should be of interest to C2 operators and technologists concerned with digitization of the battlefield, tactical command and control, replicated distributed databases, and handling of asynchronous data on the battlefield
An optical signal processing model for the interferometric fiber optic gyro by Joseph M Aein( Book )
4 editions published in 1995 in English and held by 144 libraries worldwide
This report presents the results of a communication theoretic model used to analyze the operation of Interferometric Fiber Optic Gyroscopes (IFOG). The IFOG is an all-solid-state rotation-rate sensor employed in miniature inertial measurement units (MIMU). The IFOG can achieve a navigation grade of performance (0.01 degree/hour drift rate) and offers the considerable advantage of reducing instrument costs by a factor of two or more over the current ring laser gyroscope (RLG) technology base. A simplified classical propagation model is used to describe the optical beams employed. Optical signal modulation is impressed with the following goals: (1) increase the linearity of the rotation-rate measurement and (2) mitigate the deleterious effects of the optical scatter noise unavoidably generated by the desired light beams as they traverse the optical pathways of the IFOG. This report deals with goal (1) above. The following are analyzed: (1) AC bias modulation used to linearize the IFOG instrument; (2) closed-loop, feedback operation to extend the dynamic range; and (3) serrodyne operation. The analysis establishes the performance relationships among the appropriate optical signal parameters and allows for their optimization
The RAND Advanced Simulation Language project's declarative modeling formalism (DMOD) by Jeff Rothenberg( Book )
2 editions published in 1994 in English and held by 140 libraries worldwide
This report discusses research by the RAND Advanced Simulation Language (RASL) project. The objective of this research project has been to develop knowledge-based techniques that integrate simulation and planning to answer strategic mobility questions that go beyond the What if ...? capabilities of traditional simulation: questions such as Can a give event ever happen? Under what conditions will an event happen? or 'How can a desired result be achieved?' The strategic mobility planning problem encompasses a wide range of issues concerning which transportation assets (ships, planes, etc.) to acquire and how to use them to transport personnel and materiel to satisfy mission objectives. The RASL project is researching new modeling techniques that will allow simulation and planning to be performed in an integrated fashion, using a single, underlying model of the strategic mobility domain. This project has developed a new declarative modeling formalism (DMOD) for modeling and reasoning about dynamic systems
A production-compatible microelectronic test pattern for evaluating photomask misalignment by T. J Russell( Book )
2 editions published in 1979 in English and held by 137 libraries worldwide
Calculation of the properties of vacancies and interstitials; proceedings by United States( Book )
4 editions published between 1966 and 1967 in English and held by 133 libraries worldwide
Stress corrosion cracking and hydrogen embrittlement of iron base alloys, June 12-16, 1973, Unieux, Firminy, France : [proceedings] by Unieux International Conference on Stress Corrosion Cracking and Hydrogen Embrittlement of Iron Base Alloys( Book )
1 edition published in 1977 in English and held by 130 libraries worldwide
New methods for robust science and technology planning by Robert J Lempert( Book )
2 editions published in 1998 in English and held by 130 libraries worldwide
RAND researchers have conducted a successful proof-of-concept demonstration for the Defense Advanced Research Projects Agency (DARPA) of two new methods for science and technology (S & T) planning. These methods--HyperForum, a facilitated Web-based collaborative exercise, conducted in a carefully crafted, information-rich, online environment, and Exploratory Modeling, a new approach to generating systematic, quantitative comparisons among alternative policy decisions without relying on imperfect predictions of the future--exploit new information technologies in order to: improve the quality of the S & T planning process by using online computer-assisted decision-support tools that (1) make relevant information more easily available to expert panelists meeting over the World Wide Web, and (2) help panelists include and compensate for the effects of uncertainty by treating an S & T plan as a portfolio of technology investments hedged against a wide range of plausible futures; provide a lasting electronic archive of the expert discussions and other information that go into building an S & T plan; lower the travel-related costs and scheduling constraints of the current planning process by supplementing face-to-face expert panel meetings with asynchronous meetings over the World Wide Web. This documented briefing describes that demonstration. It should be of interest to decisionmakers responsible for choosing, managing, and justifying portfolios of science and technology research projects in the Department of Defense and other federal agencies, and in the private sector. In addition, it should be informative to those readers interested in how new information technologies can provide new methods for planning and decisionmaking under uncertainty. Readers interested in viewing the Web site described in this documented briefing are invited to e-mail one of the authors: lempert@rand.org or bonomo@rand.org
Human language technology : proceedings of a workshop held at Plainsboro, New Jersey, March 21-24, 1993 by United States( Book )
7 editions published between 1993 and 1995 in English and held by 127 libraries worldwide
Global climatic data for surface, 800 mb, 400 mb, April by C Schutz( Book )
2 editions published between 1972 and 1973 in English and held by 127 libraries worldwide
The document is the second publication in the effort to gather, in one common format, the most representative global climatologies of certain seasonal meteorological variables. From selected data sources, the July global distributions of pressure, temperature, wind, and moisture are reconstructed for the three atmospheric levels. These data are supplemented by presentations of the global distributions of albedo, cloudiness, evaporation, precipitation, and selected elements of the surface heat balance. All data are interpolated at the 4-deg latitude by 5-deg longitude global grid used in the Mintz-Arakawa model. They are given in the form of both tabulated values and machine-analyzed maps. (Author)
Acoustic-gravity waves in the atmosphere; symposium proceedings by ESSA/ARPA Symposium on Acoustic-Gravity Waves( Book )
6 editions published in 1968 in English and Undetermined and held by 126 libraries worldwide
Optical interconnects in broadband switching architectures : 31 January-1 February, 1996, San Jose, California ( Book )
5 editions published in 1996 in English and Undetermined and held by 70 libraries worldwide
Optoelectronic packaging by Alan Rolf Mickelson( Book )
5 editions published in 1996 in English and Undetermined and held by 69 libraries worldwide
Heat transfer and fire spread by Hal E Anderson( Book )
2 editions published in 1969 in English and held by 50 libraries worldwide
Experimental testing of a mathematical model showed that radiant heat transfer accounted for no more than 40% of total heat flux required to maintain rate of spread. A reasonable prediction of spread was possible by assuming a horizontal convective heat transfer coefficient when certain fuel and flame characteristics were known. Fuel particle size had a linear relation to residence time of the flame while fuel bed porosity influenced burning rate. Burning regimes of liquid pool fires(turbulent, transitional, and laminar) appeared to also apply to moving fires in solid fuels. (Author)
Proceedings of the Fifth Annual Conference on AI, Simulation, and Planning in High Autonomy Systems, December 7-9, 1994, Gainesville, Florida : distributed interactive simulation environments by Simulation, and Planning in High Autonomy Systems Conference on AI( Book )
2 editions published in 1994 in English and held by 48 libraries worldwide
The Advanced Research Projects Agency, 1958-1974 ( Book )
1 edition published in 1975 in English and held by 1 library worldwide
This historical evaluation of the Advanced Research Projects Agency (ARPA) as an R & D management institution was commissioned by ARPA in recognition of the fact that remarkably little in the way of an official recordor institutional memory had been established during its seventeen year lifetime. From Agency Directors to program managers, the turnover in its leadership has been rapid by most bureaucratic standards, thus eroding first hand knowledge of ARPA's role and activities rather quickly. Conceived as a unique management organization chartered to concentrate on advanced research within the Department of Defense, this very uniqueness has frequently been questioned. Virtually every ARPA Director, and most ARPA personnel at all levels, have encountered friendly and not-so-friendly why ARPA? and what is ARPA? questions throughout its history. This report seeks to explain some of the whys and whats. For the most part, the study ends in 1972 when ARPA was designated a Defense Agency. This date was arbitrarily chosen. In instances where events or programs started in earlier periods extend beyond 1972, they have been pursued a bit further for sake of completeness, but not past 1974
Gas phase reaction kinetics of neutral oxygen species by Harold S Johnston( file )
1 edition published in 1968 in English and held by 0 libraries worldwide
 
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Alternative Names

controlled identity United States. Defense Advanced Research Projects Agency

controlled identity United States. Department of Defense

controlled identity United States. Office of Naval Research

controlled identity United States. Office of the Director of Defense Research and Engineering

A.R.P.A
Advanced Research Projects Agency
Advanced Research Projects Agency (Estats Units d'Amèrica)
Advanced Research Projects Agency (U.S.)
Advanced Research Projects Agency United States
ARPA
ARPA (Advanced Research Projects Agency)
DARPA
Département de la Défense. Advanced Research Projects Agency (États-Unis)
Estats Units d'Amèrica. Department of Defense. Advanced Research Projects Agency
Estats Units d'Amèrica. Office of Naval Research. Advanced Research Projects Agency
Estats Units d'Amèrica. Office of the Director of Defense Research and Engineering. Advanced Research Projects Agency
ONR/ARPA
United States Advanced Research Projects Agency
United States Department of Defense Advanced Research Projects Agency
United States. Dept. of Defense. Advanced Research Projects Agency
United States. Office of Naval Research. Advanced Research Projects Agency
United States Office of the Director of Defense Research and Engineering Advanced Research Projects Agency
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English (97)
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