Withthe rising demand on internet online services, more and more individuals and organizations migrate their data and services from local to geographically distributed internet data centers for reliability, managemen...
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the energy consumption issue in distributedcomputing systems has become quite critical due to environmental concerns. In response to this, many energy-aware scheduling algorithms have been developed primarily by usin...
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the two most recent PVSS (publicly verifiable secret sharing) schemes are illustrated to be vulnerable to a simple attack. Moreover, one of them has to deteriorate its efficiency greatly to meet practical security req...
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Fuzzy clustering based vector quantization algorithm has been widely used in the field of data compression since the use of fuzzy, clustering analysis in the early stages of a vector quantization process can make this...
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ISBN:
(纸本)9780769536422
Fuzzy clustering based vector quantization algorithm has been widely used in the field of data compression since the use of fuzzy, clustering analysis in the early stages of a vector quantization process can make this process less sensitive to initialization. However, the process of fuzzy clustering is computationally very intensive because of its complex framework for the quantitative formulation of the uncertainty involved in the training vector space. To overcome the computational burden of the process, we introduce a parallel implementation of Fuzzy Vector Quantization (FVQ) using a representative data parallel architecture which consists of 4,096 processing elements (PEs). Our parallel approach provides a computationally efficient solution withthe 4,096 PEs by employing an effective vector assignment strategy for the transition from soft to crisp decisions during the clustering process. Experimental results show that our parallel approach provides 1000x greater performance and 100x higher energy efficiency than other implementations using commercial processors such as ARM families.
the future power grid expected to accommodate and integrates all new kinds of distributed renewable energy generations, intelligent energy management systems to accommodate the ever growing energy demand. this fact le...
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ISBN:
(纸本)9781479932542
the future power grid expected to accommodate and integrates all new kinds of distributed renewable energy generations, intelligent energy management systems to accommodate the ever growing energy demand. this fact leads the trend of power grid to shift to the Smart Grid that uses advanced communication, smart meters, sensors and information technologies to create an automated, intelligent and widely distributed energy delivery network. A huge amount of row data is collected by smart meters and sensors from the end user and different part of the network to the computation system. Subsequently, this considerably big amount of data must be processed, analyzed and stored in a cost effective ways. In this manner, an enormous pool of computing resources and storage must be provided to compute this vast amount of data. Researchers have been suggesting different solutions. A distributed and parallelcomputing techniques for future power system, Grid computing [1], fast parallel processing of the mass data in cloud computing [2], and smart grid control software in cloud computing architecture [3]. this paper discussed the feasibility study of the handling of monitoring of renewable energy in smart grid on cloud computing framework retaining smart grid security, analysis of the availability of Energy management software tools in smart grid using cloud computing, design of a demonstrator and realization of demonstration for further education purpose to utilize the advantage of cloud computingdistributed and scalable nature.
Companies are increasingly organizing work in globally distributed teams. A core challenge to these distributed teams is, however, to maintain social relationships due to limited opportunities and tools for social eng...
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ISBN:
(纸本)9781631900433
Companies are increasingly organizing work in globally distributed teams. A core challenge to these distributed teams is, however, to maintain social relationships due to limited opportunities and tools for social engagement. In this paper we present SIDEBAR: a videoconferencing system that enhances virtual meetings by enabling social engagement. through image analysis of the conference video feed, SIDEBAR tracks meeting participants in real-time. A personal tablet then allows each participant to identify and track other participants, to look up information about them and their local work context, and to engage in peer-to-peer chat conversations. We describe the motivation, design and implementation of SIDEBAR and report results from a preliminary evaluation, which shows that participants found SIDEBAR useful and easy to use. the paper concludes by providing three design guidelines for collaborative technologies supporting social engagement.
Location based services (LBS) can be separated into a number of layers: technology layer, application layer, standard layer, and social-ethical layer. this paper presents an ontology development at standard layer. We ...
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the proceedings contain 140 papers. the topics discussed include: stochastically robust resource management in heterogeneous parallelcomputing systems;data structures and algorithms for packet forwarding and classifi...
ISBN:
(纸本)9780769539089
the proceedings contain 140 papers. the topics discussed include: stochastically robust resource management in heterogeneous parallelcomputing systems;data structures and algorithms for packet forwarding and classification;high-performance cloud computing: a view of scientific applications;constructing independent spanning trees for hypercubes and locally twisted cubes;a node-to-set disjoint-path routing algorithm in metacube;a new network topology for P2P overlay based on a contracted star graph;a single-trace cycle collection for reference counting systems;a heuristic routing scheme for wireless sensor networks based on a local search method;identifying useless states in non-FIFO distributed computations by using pseudo timestamps;job scheduling techniques for distributed systems with heterogeneous processor cardinality;pipelined computation of very large word-length LNS addition/subtraction computation with exponential convergence rate;and conflict-avoidance in multicore caching for data-similar executions.
this paper presents the ReTiS simulation tool and its use for real-time application analysis. Simulation concerns the operational architecture and takes into account the software (executable code of real-time tasks an...
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ISBN:
(纸本)9780780394018
this paper presents the ReTiS simulation tool and its use for real-time application analysis. Simulation concerns the operational architecture and takes into account the software (executable code of real-time tasks and real-time operating system) and the hardware (set of processors and networks). In this paper we show a mechanism that allows to detect task switch and to analyze task's stack (usage and corruption). this mechanism neither requires any application nor operating system code modification. We show its interest for the analysis of the temporal behavior of real-time applications in a distributed system.
the knapsack problem is very important in cryptosystem and in number theory. this paper proposes a new parallel algorithm for the knapsack problem where the method of divide and conquer is adopted. Basing on an EREW-S...
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ISBN:
(纸本)0780378407
the knapsack problem is very important in cryptosystem and in number theory. this paper proposes a new parallel algorithm for the knapsack problem where the method of divide and conquer is adopted. Basing on an EREW-SIMD machine with shared memory, the proposed algorithm utilizes O(2(n/4))(1-epsilon) processors, 0less than or equal to epsilon less than or equal to 1, and O(2(n)) memory to find a solution for the n-element knapsack problem in time O(2(n/4) (2(n/4))epsilon). thus the cost of the proposed parallel algorithm is O(2(n)), which is optimal, and an improved result over the past researches. Keywords: Knapsack problem, parallel algorithm, optimal algorithm, memory conflicts.
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