In this paper, the most appropriate buffer structure, page replacement policy and buffering scheme for closest pairs queries, where both spatial datasets are stored in R-trees, are investigated. Three buffer structure...
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We describe a de-centralised approach to resource management and discovery, based on a community of interacting software agents. Each agent either represents a user application, a resource, or a MatchMaking service. T...
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We present novel algorithms for efficient scheduling of synchronizing threads on multiprogrammed SMPs. The algorithms are based on intra-application priority control of synchronizing threads. We refer to such algorith...
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We present novel algorithms for efficient scheduling of synchronizing threads on multiprogrammed SMPs. The algorithms are based on intra-application priority control of synchronizing threads. We refer to such algorithms with the term "informing algorithms". Prerequisite for informing algorithms is the use of an efficient communication medium between the user- and kernel-level and the existence of in-kernel mechanisms that allow the applications to cooperate with the OS scheduler. The applications are given the opportunity to influence, in a non-intrusive manner, the scheduling decisions concerning their threads. We compare the performance of our informing algorithms with the performance of corresponding scheduler-oblivious algorithms under multiprogramming. We experimented on a small-scale, Intel x86-based SMP, running Linux, using both microbenchmarks and applications from the Splash-2 benchmark suite. The results substantiate the superiority of our approach and indicate that the philosophy of informing algorithms may be applicable in a wide range of algorithms and architectures.
As Asynchronous Transfer Mode technology becomes more widely used and consequently more critical, fault tolerance in ATM switches is considered to be of major importance, as it is quite unacceptable to have total disr...
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ISBN:
(纸本)9608052033
As Asynchronous Transfer Mode technology becomes more widely used and consequently more critical, fault tolerance in ATM switches is considered to be of major importance, as it is quite unacceptable to have total disruption of operation due to failure in a part of the switch. In the present paper a new grid-based self-routing ATM switch fabric is presented, which exhibits great characteristics as far as fault tolerance is concerned, without employing redundancy. Fault tolerance is studied, by employing the metric of "survival probability" in order to evaluate the behavior of the architecture under concurrent failures.
Process network synthesis (PNS) has enormous practical impact;however, its solution is difficult in general. This experience has been recently reasoned by Blázsik and Imreh who pointed out that PNS-problems are N...
Process network synthesis (PNS) has enormous practical impact;however, its solution is difficult in general. This experience has been recently reasoned by Blázsik and Imreh who pointed out that PNS-problems are NP-hard. They proved that a simple subclass of PNS-problems is equivalent to the class of set covering problems. In the present paper, it is shown that more general classes of PNS-problems can also be reformulated as set covering problems. This enables the sophisticated techniques developed for solving set covering problems also to be applied for solving some PNS-problems.
Examines three different innovations in electronic academic publishing of interest to practitioners in the field of intelligent systems: (1) JAIR (The Journal of Artificial Intelligence Research)-an electronic journal...
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Examines three different innovations in electronic academic publishing of interest to practitioners in the field of intelligent systems: (1) JAIR (The Journal of Artificial Intelligence Research)-an electronic journal by and for the AI research community; (2) medical publishing and AI; and (3) how can we get high-quality electronic journals?.
This paper describes a framework which provides health care professionals with a set of tools for building decision-theory based support systems for resource management optimization of health care policies in selected...
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This volume constitutes the refereed proceedings of the confederated international conferences: Cooperative Information Systems (CoopIS 2013), Distributed Objects and Applications (DOA-Trusted Cloud 2013), and Ontolog...
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ISBN:
(数字)9783642410307
ISBN:
(纸本)9783642410291
This volume constitutes the refereed proceedings of the confederated international conferences: Cooperative Information Systems (CoopIS 2013), Distributed Objects and Applications (DOA-Trusted Cloud 2013), and Ontologies, Data Bases and Applications of SEmantics (ODBASE 2013) held as part of OTM 2013 in September 2013 in Graz, Austria. The 47 revised full papers presented together with 6 short papers and 5 keynotes were carefully reviewed and selected from a total of 137 submissions. The papers are organized in topical sections on business process management; process modelling; service management; social networking; models and schemas; technical advances in cloud computing; towards trusted cloud computing; privacy for the cloud; querying and mining semantic information; semantic matching and mapping; semantic information management; semantics in use.
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