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FAST TRACK COMMUNICATION Electron dynamics in quantum gate operation

by A Kerridge, A H Harker, A M Stoneham , 2007
"... We model the evolving time-dependent electronic structure of a solid-state quantum gate as it performs basic quantum operations. Our time-dependent configuration-interaction method follows the evolution of two donor electron spin qubits interacting with a third, optically excited, control spin in an ..."
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We model the evolving time-dependent electronic structure of a solid-state quantum gate as it performs basic quantum operations. Our time-dependent configuration-interaction method follows the evolution of two donor electron spin qubits interacting with a third, optically excited, control spin

A Security Architecture for Computational Grids

by Ian Foster , Carl Kesselman, Gene Tsudik, Steven Tuecke , 1998
"... State-of-the-art and emerging scientific applications require fast access to large quantities of data and commensurately fast computational resources. Both resources and data are often distributed in a wide-area network with components administered locally and independently. Computations may involve ..."
Abstract - Cited by 568 (47 self) - Add to MetaCart
involve hundreds of processes that must be able to acquire resources dynamically and communicate e#ciently. This paper analyzes the unique security requirements of large-scale distributed (grid) computing and develops a security policy and a corresponding security architecture. An implementation

Opportunistic Beamforming Using Dumb Antennas

by Pramod Viswanath, David Tse, Rajiv Laroia - IEEE Transactions on Information Theory , 2002
"... Multiuser diversity is a form of diversity inherent in a wireless network, provided by independent time-varying channels across the different users. The diversity benefit is exploited by tracking the channel fluctuations of the users and scheduling transmissions to users when their instantaneous cha ..."
Abstract - Cited by 811 (1 self) - Add to MetaCart
channel quality is near the peak. The diversity gain increases with the dynamic range of the fluctuations and is thus limited in environments with little scattering and/or slow fading. In such environments, we propose the use of multiple transmit antennas to induce large and fast channel fluctuations so

The design and implementation of an intentional naming system

by William Adjie-Winoto, Elliot Schwartz, Hari Balakrishnan, Jeremy Lilley - 17TH ACM SYMPOSIUM ON OPERATING SYSTEMS PRINCIPLES (SOSP '99) PUBLISHED AS OPERATING SYSTEMS REVIEW, 34(5):186--201, DEC. 1999 , 1999
"... This paper presents the design and implementation of the Intentional Naming System (INS), a resource discovery and service location system for dynamic and mobile networks of devices and computers. Such environments require a naming system that is (i) expressive, to describe and make requests based o ..."
Abstract - Cited by 518 (14 self) - Add to MetaCart
This paper presents the design and implementation of the Intentional Naming System (INS), a resource discovery and service location system for dynamic and mobile networks of devices and computers. Such environments require a naming system that is (i) expressive, to describe and make requests based

Information-Driven Dynamic Sensor Collaboration for Tracking Applications

by Feng Zhao, Jaewon Shin, James Reich - SIGNAL PROCESSING MAGAZINE , 2002
"... This article overviews the information-driven approach to sensor collaboration in ad hoc sensor networks. The main idea is for a network to determine participants in a “sensor collaboration ” by dynamically optimizing the information utility of data for a given cost of communication and computation. ..."
Abstract - Cited by 378 (8 self) - Add to MetaCart
This article overviews the information-driven approach to sensor collaboration in ad hoc sensor networks. The main idea is for a network to determine participants in a “sensor collaboration ” by dynamically optimizing the information utility of data for a given cost of communication and computation

Indexing the Positions of Continuously Moving Objects

by Simonas Saltenis, Christian S. Jensen, Scott T. Leutenegger, Mario A. Lopez , 2000
"... The coming years will witness dramatic advances in wireless communications as well as positioning technologies. As a result, tracking the changing positions of objects capable of continuous movement is becoming increasingly feasible and necessary. The present paper proposes a novel, R # -tree base ..."
Abstract - Cited by 389 (20 self) - Add to MetaCart
The coming years will witness dramatic advances in wireless communications as well as positioning technologies. As a result, tracking the changing positions of objects capable of continuous movement is becoming increasingly feasible and necessary. The present paper proposes a novel, R # -tree

Computer Vision Face Tracking For Use in a Perceptual User Interface

by Gary R. Bradski , 1998
"... As a first step towards a perceptual user interface, a computer vision color tracking algorithm is developed and applied towards tracking human faces. Computer vision algorithms that are intended to form part of a perceptual user interface must be fast and efficient. They must be able to track in re ..."
Abstract - Cited by 357 (4 self) - Add to MetaCart
As a first step towards a perceptual user interface, a computer vision color tracking algorithm is developed and applied towards tracking human faces. Computer vision algorithms that are intended to form part of a perceptual user interface must be fast and efficient. They must be able to track

Analyzing Peer-to-Peer Traffic Across Large Networks

by Subhabrata Sen, Jia Wang - IEEE/ACM Transactions on Networking , 2002
"... Abstract—The use of peer-to-peer (P2P) applications is growing dramatically, particularly for sharing large video/audio files and software. In this paper, we analyze P2P traffic by measuring flowlevel information collected at multiple border routers across a large ISP network, and report our investi ..."
Abstract - Cited by 383 (3 self) - Add to MetaCart
investigation of three popular P2P systems—FastTrack, Gnutella, and Direct-Connect. We characterize the P2P trafffic observed at a single ISP and its impact on the underlying network. We observe very skewed distribution in the traffic across the network at different levels of spatial aggregation (IP, prefix, AS

An adaptive, nonuniform cache structure for wire-delay dominated on-chip caches

by Changkyu Kim, Doug Burger, Stephen W. Keckler - In International Conference on Architectural Support for Programming Languages and Operating Systems , 2002
"... Growing wire delays will force substantive changes in the designs of large caches. Traditional cache architectures assume that each level in the cache hierarchy has a single, uniform access time. Increases in on-chip communication delays will make the hit time of large on-chip caches a function of a ..."
Abstract - Cited by 314 (39 self) - Add to MetaCart
Growing wire delays will force substantive changes in the designs of large caches. Traditional cache architectures assume that each level in the cache hierarchy has a single, uniform access time. Increases in on-chip communication delays will make the hit time of large on-chip caches a function

Vigilante: End-to-End Containment of Internet Worm Epidemics

by Manuel Costa, Jon Crowcroft, Miguel Castro, Antony Rowstron, Lidong Zhou, Lintao Zhang, Paul Barham , 2008
"... Worm containment must be automatic because worms can spread too fast for humans to respond. Recent work proposed network-level techniques to automate worm containment; these techniques have limitations because there is no information about the vulnerabilities exploited by worms at the network level. ..."
Abstract - Cited by 304 (6 self) - Add to MetaCart
Worm containment must be automatic because worms can spread too fast for humans to respond. Recent work proposed network-level techniques to automate worm containment; these techniques have limitations because there is no information about the vulnerabilities exploited by worms at the network level
Results 1 - 10 of 4,923