Results 1 - 10 of 5,946

DEPLOYABLE SONAR SYSTEMS FOR UNDERWATER COMMUNICATIONS

by S. Eswar Prasad, Richard Blacow, Jeffrey Frank, David Waechter
"... Abstract: This paper describes deployable underwater acoustic systems developed by Sensor Technology Limited. Two of these systems are based on a low-frequency barrel stave projector and a third one on a higher frequency transducer operating at 24kHz. The three systems are the Broadband Acoustic Tra ..."
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Transmission System (BATS), the Acoustic Communications System (ACOMS-D/P) and the Deployable Sonar System (DSS). The paper describes the transducers and the configuration and performance characteristics of the three systems based on them. 1.

A New Location Technique for the Active Office

by Andy Ward, Alan Jones , 1997
"... Configuration of the computing and communications systems found at home and in the workplace is a complex task that currently requires the attention of the user. Recently, researchers have begun to examine computers that would autonomously change their functionality based on observations of who or ..."
Abstract - Cited by 515 (4 self) - Add to MetaCart
Configuration of the computing and communications systems found at home and in the workplace is a complex task that currently requires the attention of the user. Recently, researchers have begun to examine computers that would autonomously change their functionality based on observations of who

Architectural Styles and the Design of Network-based Software Architectures

by Roy Thomas Fielding , 2000
"... The World Wide Web has succeeded in large part because its software architecture has been designed to meet the needs of an Internet-scale distributed hypermedia system. The Web has been iteratively developed over the past ten years through a series of modifications to the standards that define its ..."
Abstract - Cited by 1119 (1 self) - Add to MetaCart
a system, how components identify and communicate with each other, how information is communicated, how elements of a system can evolve independently, and how all of the above can be described using formal and informal notations. My work is motivated by the desire to understand and evaluate

Maté: A Tiny Virtual Machine for Sensor Networks

by Philip Levis, David Culler , 2002
"... Composed of tens of thousands of tiny devices with very limited resources ("motes"), sensor networks are subject to novel systems problems and constraints. The large number of motes in a sensor network means that there will often be some failing nodes; networks must be easy to repopu-late. ..."
Abstract - Cited by 510 (21 self) - Add to MetaCart
-late. Often there is no feasible method to recharge motes, so energy is a precious resource. Once deployed, a network must be reprogrammable although physically unreachable, and this reprogramming can be a significant energy cost. We present Maté, a tiny communication-centric virtual machine designed

Packet Leashes: A Defense against Wormhole Attacks in Wireless Ad Hoc Networks

by Yih-chun Hu , 2003
"... Abstract — As mobile ad hoc network applications are deployed, security emerges as a central requirement. In this paper, we introduce the wormhole attack, a severe attack in ad hoc networks that is particularly challenging to defend against. The wormhole attack is possible even if the attacker has n ..."
Abstract - Cited by 703 (15 self) - Add to MetaCart
Abstract — As mobile ad hoc network applications are deployed, security emerges as a central requirement. In this paper, we introduce the wormhole attack, a severe attack in ad hoc networks that is particularly challenging to defend against. The wormhole attack is possible even if the attacker has

Habitat monitoring: application driver for wireless communications technology

by Alberto Cerpa, Jeremy Elson, Deborah Estrin, Lewis Girod - In ACM SIGCOMM Workshop on Data Communications in Latin America and the Caribbean , 2001
"... lecs.cs.ucla.edu As new fabrication and integration technologies reduce the cost and size of micro-sensors and wireless interfaces, it becomes feasible to deploy densely distributed wireless networks of sensors and actuators. These systems promise to revolutionize biological, earth, and environmenta ..."
Abstract - Cited by 424 (39 self) - Add to MetaCart
lecs.cs.ucla.edu As new fabrication and integration technologies reduce the cost and size of micro-sensors and wireless interfaces, it becomes feasible to deploy densely distributed wireless networks of sensors and actuators. These systems promise to revolutionize biological, earth

ASCENT: Adaptive self-configuring sensor networks topologies

by Alberto Cerpa, Deborah Estrin , 2004
"... Advances in microsensor and radio technology will enable small but smart sensors to be deployed for a wide range of environmental monitoring applications. The low per-node cost will allow these wireless networks of sensors and actuators to be densely distributed. The nodes in these dense networks w ..."
Abstract - Cited by 449 (15 self) - Add to MetaCart
will coordinate to perform the distributed sensing and actuation tasks. Moreover, as described in this paper, the nodes can also coordinate to exploit the redundancy provided by high density so as to extend overall system lifetime. The large number of nodes deployed in these systems will preclude manual

Making Gnutella-like P2P Systems Scalable

by Yatin Chawathe, Sylvia Ratnasamy, Lee Breslau, Nick Lanham, Scott Shenker , 2003
"... Napster pioneered the idea of peer-to-peer file sharing, and supported it with a centralized file search facility. Subsequent P2P systems like Gnutella adopted decentralized search algorithms. However, Gnutella's notoriously poor scaling led some to propose distributed hash table solutions to t ..."
Abstract - Cited by 429 (1 self) - Add to MetaCart
implementation and its deployment on a testbed. Categories and Subject Descriptors C.2 [Computer Communication Networks]: Distributed Systems General Terms Algorithms, Design, Performance, Experimentation Keywords Peer-to-peer, distributed hash tables, Gnutella 1.

Rumor Routing Algorithm for Sensor Networks

by David Braginsky, Deborah Estrin , 2002
"... Advances in micro-sensor and radio technology will enable small but smart sensors to be deployed for a wide range of environmental monitoring applications. In order to constrain communication overhead, dense sensor networks call for new and highly efficient methods for distributing queries to nodes ..."
Abstract - Cited by 417 (2 self) - Add to MetaCart
Advances in micro-sensor and radio technology will enable small but smart sensors to be deployed for a wide range of environmental monitoring applications. In order to constrain communication overhead, dense sensor networks call for new and highly efficient methods for distributing queries to nodes

Social translucence: An approach to designing systemsthat mesh with social processes.",

by Thomas Erickson , Wendy A Kellogg - Trans. Computer-Human Interaction, , 2002
"... We are interested in designing systems that support communication and collaboration among large groups of people over computer networks. We begin by asking what properties of the physical world support graceful human-human communication in face-to-face situations, and argue that it is possible to d ..."
Abstract - Cited by 411 (20 self) - Add to MetaCart
We are interested in designing systems that support communication and collaboration among large groups of people over computer networks. We begin by asking what properties of the physical world support graceful human-human communication in face-to-face situations, and argue that it is possible
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