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Real-time Sonar Beamforming on a Unix Workstation

by Using Process Networks, Gregory E. Allen - IEEE Transactions on Signal Processing , 1998
"... Traditionally, expensive custom hardware has been required to implement data-intensive sonar beamforming algorithms in real-time. We develop a sonar beamformer in software by merging the following recent technologies: (1) symmetric multiprocessing on Unix workstations, (2) lightweight POSIX threads, ..."
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Traditionally, expensive custom hardware has been required to implement data-intensive sonar beamforming algorithms in real-time. We develop a sonar beamformer in software by merging the following recent technologies: (1) symmetric multiprocessing on Unix workstations, (2) lightweight POSIX threads

Direct Manipulation Tools for UNIX Workstations (First Draft)

by J Dbovey, M T Russell , 1998
"... Direct manipulation is one approach to the creation of software which can make use of the high resolution graphics and pointing device available on a workstation like a Sun 3. A direct manipulation tool is typically used to manipulate a complex system like, for example, a le system, and works by pre ..."
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Direct manipulation is one approach to the creation of software which can make use of the high resolution graphics and pointing device available on a workstation like a Sun 3. A direct manipulation tool is typically used to manipulate a complex system like, for example, a le system, and works

The Mercator Environment: A Nonvisual Interface to X Windows and Unix Workstations

by Elizabeth Mynatt, W. Keith Edwards - Graphics, Visualization & Usability Center, Georgia Institute of Technology , 1992
"... User interfaces to computer workstations are heavily dependent on visual information. These Graphical User Interfaces, commonly found on powerful desktop computers, are almost completely inaccessible to blind and visually impaired individuals. In order to make these types of computers accessible to ..."
Abstract - Cited by 14 (3 self) - Add to MetaCart
to non-sighted users, it will be necessary to develop a new interface which replaces the visual communication with audio and tactile communication. This paper describes the Mercator Environment---an auditory and tactile interface to X Windows and Unix workstations designed for the visually impaired

Long-Term File Activity Patterns in a UNIX Workstation Environment

by Timothy J. Gibson, Ethan L. Miller - FIFTEENTH IEEE SYMPOSIUM ON MASS STORAGE SYSTEMS , 1998
"... As mass storage technology becomes more affordable for sites smaller than supercomputer centers, understanding their file access patterns becomes crucial for developing systems to store rarely used data on tertiary storage devices such as tapes and optical disks. This paper presents a new way to ..."
Abstract - Cited by 10 (3 self) - Add to MetaCart
to collect and analyze file system statistics for UNIX-based file systems. The collection system runs in user-space and requires no modification of the operating system kernel. The statistics package provides details about file system operations at the file level: creations, deletions, modifications, etc

Putting the 1991 Census Sample of Anonymised Records on your Unix Workstation

by Ian Turton, Stan Openshaw
"... The paper describes the the development of a customised computer software package for easing the analysis of the 1991 Sample of Anonymised Records. The resulting USAR package is designed to be portable within the unix environment. It offers a number of features such as interactive table design, inte ..."
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The paper describes the the development of a customised computer software package for easing the analysis of the 1991 Sample of Anonymised Records. The resulting USAR package is designed to be portable within the unix environment. It offers a number of features such as interactive table design

Setting Up a Modem on a Unix Workstation: Don't try this at home

by Richard Andrew, Richard Andrew Miles Outerbridge
"... Introduction A telephone is a device which converts sounds (usually gossip or deep breathing) into a form which can travel along phone lines to a location where another telephone performs the reverse conversion (with some unavoidable, but hopefully acceptable, "loss" occurring in the proc ..."
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in the process). A modem is a device which turns computer babble into a form which can travel along phone lines and which can be converted back with little or no loss (see section 4.2 below) by another modem. We bought a bunch of modems and I tried to hook them up to various Unix workstations. It should have

Real-time Sonar Beamforming on a Unix Workstation using Process Networks and POSIX Threads

by Gregory E. Allen - IEEE Transactions on Signal Processing , 1998
"... Traditionally, expensive custom hardware has been required to implement data-intensive sonar beamforming algorithms in real-time. We develop a sonar beamformer in software by merging the following recent technologies: (1) symmetric multiprocessing on Unix workstations, (2) lightweight POSIX threads, ..."
Abstract - Cited by 15 (2 self) - Add to MetaCart
Traditionally, expensive custom hardware has been required to implement data-intensive sonar beamforming algorithms in real-time. We develop a sonar beamformer in software by merging the following recent technologies: (1) symmetric multiprocessing on Unix workstations, (2) lightweight POSIX threads

Coda: A Highly Available File System for a Distributed Workstation Environment

by Mahadev Satyanarayanan, James J. Kistler, Puneet Kumar, Maria E. Okasaki, Ellen H. Siegel, David C. Steere - IN IEEE TRANSACTIONS ON COMPUTERS , 1990
"... Coda is a file system for a large-scale distributed computing environment composed of Unix workstations. It provides resiliency to server and network failures through the use of two distinct but complementary mechanisms. One mechanism, server replication,stores copies of a file at multiple servers ..."
Abstract - Cited by 530 (45 self) - Add to MetaCart
Coda is a file system for a large-scale distributed computing environment composed of Unix workstations. It provides resiliency to server and network failures through the use of two distinct but complementary mechanisms. One mechanism, server replication,stores copies of a file at multiple

TreadMarks: Distributed Shared Memory on Standard Workstations and Operating Systems

by Pete Keleher , Alan L. Cox, Sandhya Dwarkadas, Willy Zwaenepoel - IN PROCEEDINGS OF THE 1994 WINTER USENIX CONFERENCE , 1994
"... TreadMarks is a distributed shared memory (DSM) system for standard Unix systems such as SunOS and Ultrix. This paper presents a performance evaluation of TreadMarks running on Ultrix using DECstation-5000/240's that are connected by a 100-Mbps switch-based ATM LAN and a 10-Mbps Ethernet. Ou ..."
Abstract - Cited by 526 (17 self) - Add to MetaCart
TreadMarks is a distributed shared memory (DSM) system for standard Unix systems such as SunOS and Ultrix. This paper presents a performance evaluation of TreadMarks running on Ultrix using DECstation-5000/240's that are connected by a 100-Mbps switch-based ATM LAN and a 10-Mbps Ethernet

Real-time sonar beamforming on a symmetric multiprocessing UNIX workstation using process networks and POSIX pthreads

by Gregory Eugene Allen, Gregory Eugene Allen, Brian L. Evans, Craig M. Chase , 1998
"... I would like to dedicate this report to my wife, Dara Marie, and to our 14-month-old daughter, Sabrina Fair. Thank you for providing me with the quiet time I needed to complete this report. Once again, I can join in the chase. And also to my parents and extended family, for their encouragement, and ..."
Abstract - Cited by 4 (1 self) - Add to MetaCart
I would like to dedicate this report to my wife, Dara Marie, and to our 14-month-old daughter, Sabrina Fair. Thank you for providing me with the quiet time I needed to complete this report. Once again, I can join in the chase. And also to my parents and extended family, for their encouragement, and for always stressing the value of education. Acknowledgements I would like to thank the talented people in the Advanced Sonar Group at Applied Research Laboratories, The University of Texas at Austin, for their years of guidance and support, and for providing me the time and equipment to produce this research. I would especially like to thank Terry Brudner, Mike DeSimone, Steve Morrissette, and Jeff Napper for their insight and assistance. August 10 th, 1998 v Real-Time Sonar Beamforming on a Symmetric Multiprocessing
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