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Ontologies: Principles, methods and applications

by Mike Uschold, Michael Gruninger - KNOWLEDGE ENGINEERING REVIEW , 1996
"... This paper is intended to serve as a comprehensive introduction to the emerging field concerned with the design and use of ontologies. We observe that disparate backgrounds, languages, tools, and techniques are a major barrier to effective communication among people, organisations, and/or software s ..."
Abstract - Cited by 582 (3 self) - Add to MetaCart
then consider the bene ts of and describe, a more formal approach. We re-visit the scoping phase, and discuss the role of formal languages and techniques in the specification, implementation and evaluation of ontologies. Finally, we review the state of the art and practice in this emerging field,

Leases: An Efficient Fault-Tolerant Mechanism for Distributed File Cache Consistency

by Cary G. Gray, et al. , 1989
"... Caching introduces the overbead and complexity of ensur-ing consistency, reducing some of its performance bene-fits. In a distributed system, caching must deal,wit.h the additional complications of communication and host fail-ures. Leases are proposed as a time-based mechanism that provides efficien ..."
Abstract - Cited by 335 (1 self) - Add to MetaCart
Caching introduces the overbead and complexity of ensur-ing consistency, reducing some of its performance bene-fits. In a distributed system, caching must deal,wit.h the additional complications of communication and host fail-ures. Leases are proposed as a time-based mechanism that provides

and bene®ts

by unknown authors
"... Chronic heart failure is a syndrome characterized by left ventricular dysfunction, reduced exercise toler-ance, impaired quality of life, and a markedly short-w xened life-expectancy 1,2. A substantial proportion of ..."
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Chronic heart failure is a syndrome characterized by left ventricular dysfunction, reduced exercise toler-ance, impaired quality of life, and a markedly short-w xened life-expectancy 1,2. A substantial proportion of

the Earned Income Tax Credit and the Labor Supply of Single Mothers,” NBER Working Paper No

by Bruce D. Meyer, Dan, T. Rosenbaum , 1999
"... During 1984–1996, welfare and tax policy were changed to encourage work by single mothers. The Earned Income Tax Credit was expanded, welfare bene�ts were cut, welfare time limits were added, and welfare cases were terminated. Medicaid for the working poor was expanded, as were training programs and ..."
Abstract - Cited by 219 (7 self) - Add to MetaCart
During 1984–1996, welfare and tax policy were changed to encourage work by single mothers. The Earned Income Tax Credit was expanded, welfare bene�ts were cut, welfare time limits were added, and welfare cases were terminated. Medicaid for the working poor was expanded, as were training programs

Arbitrary Size Benes Networks

by Chihming Chang, Rami Melhem - Parallel Processing Letters , 1997
"... The Benes network is a rearrangeable nonblocking network which can realize any arbitrary permutation. Overall, the r-dimensional Benes network connects 2 r inputs to 2 r outputs through 2r \Gamma 1 levels of 2 \Theta 2 switches. Each level of switches consists of 2 r\Gamma1 switches, and hence ..."
Abstract - Cited by 5 (0 self) - Add to MetaCart
The Benes network is a rearrangeable nonblocking network which can realize any arbitrary permutation. Overall, the r-dimensional Benes network connects 2 r inputs to 2 r outputs through 2r \Gamma 1 levels of 2 \Theta 2 switches. Each level of switches consists of 2 r\Gamma1 switches

Software rejuvenation: Analysis, module and applications

by Yennun Huang, Chandra Kintala, Nick Kolettis, N. Dudley Fulton - IN PROCEEDINGS OF IEEE INTL. SYMPOSIUM ON FAULT TOLERANT COMPUTING, FTCS 25 , 1995
"... Software rejuvenation is the concept of gracefully terminating an application and immediately restarting it at a clean internal state. In a client-server type of application where the server is intended to run perpetually for providing a service to its clients, rejuvenating the server process period ..."
Abstract - Cited by 224 (2 self) - Add to MetaCart
. We present a model for analyzing software rejuvenation in such continuously-running applications and express downtime and costs due to downtime during rejuvneation in terms of the parameters in that model. Threshold conditions for rejuvenation to be bene cial are also derived. We implemented

Chicken and Egg: Competition Among Intermediation Service Providers

by Bernard Caillaud, Bruno Jullien - Rand Journal of Economics , 2003
"... This paper has bene…tted from the comments and criticisms of participants at the 2000 EEA Meeting in Bolzano, at conferences in Heidelberg and in Toulouse, and at various seminars in Vienna, Rotterdam, Lausanne and Paris. We are in particular indebted to P.Aghion, C.Shapiro and J.Tirole. Remaining e ..."
Abstract - Cited by 204 (5 self) - Add to MetaCart
This paper has bene…tted from the comments and criticisms of participants at the 2000 EEA Meeting in Bolzano, at conferences in Heidelberg and in Toulouse, and at various seminars in Vienna, Rotterdam, Lausanne and Paris. We are in particular indebted to P.Aghion, C.Shapiro and J.Tirole. Remaining

Maximizing Job Bene

by Ts On-Line Baruch, Baruch Awerbuch, Yossi Azar, Oded Regev , 2000
"... We consider a bene t model for on-line preemptive scheduling. In this model jobs arrive at the on-line scheduler at their release time. Each job arrives with its own execution time and bene t function. The ow time of a job is the time that passes from its release to its completion. The bene t ..."
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We consider a bene t model for on-line preemptive scheduling. In this model jobs arrive at the on-line scheduler at their release time. Each job arrives with its own execution time and bene t function. The ow time of a job is the time that passes from its release to its completion. The bene

On Nonblocking Properties of the Benes Network

by Petr Kolman - In Proceedings of the 6th Annual European Symposium on Algorithms , 1998
"... A network is called nonblocking if every unused input can be connected by a path through unused edges to any unused output, regardless of which inputs and outputs have been already connected. The Benes network of dimension n is shown to be strictly nonblocking if only a suitable chosen fraction ..."
Abstract - Cited by 2 (1 self) - Add to MetaCart
A network is called nonblocking if every unused input can be connected by a path through unused edges to any unused output, regardless of which inputs and outputs have been already connected. The Benes network of dimension n is shown to be strictly nonblocking if only a suitable chosen fraction

VLSI Layout of Benes Networks

by Paul Manuel, Albert William, Kalim Qureshi, Albert Muthumalai
"... Abstract – The Benes network consists of back-to-back butterflies. There exist a number of topological representations that are used to describe butterfly- like architectures. We identify a new topological representation of Benes network. The significance of this representation is demonstrated by so ..."
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Abstract – The Benes network consists of back-to-back butterflies. There exist a number of topological representations that are used to describe butterfly- like architectures. We identify a new topological representation of Benes network. The significance of this representation is demonstrated
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