the ever growing request for digital information raises the need for content distribution architectures providing high storage capacity, data availability and good performance. While many simple solutions for scalable...
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ISBN:
(纸本)9781424447282
the ever growing request for digital information raises the need for content distribution architectures providing high storage capacity, data availability and good performance. While many simple solutions for scalable distribution of quasi-static content exist, there are still no approaches that can ensure both scalability and consistency for the case of highly dynamic content, such as the data managed inside wikis. We propose a peer to peer solution for distributing and managing dynamic content, that combines two widely studied technologies: distributed hash tables (DHT) and optimistic replication. In our "universal wiki" engine architecture (UniWiki), on top of a reliable, inexpensive and consistent DHT-based storage, any number of front-ends can be added, ensuring both read and write scalability, as well as suitability for large-scale scenarios. the implementation is based on a distributed Interception Middleware, thus separating distribution, replication, and consistency responsibilities, and also making our system transparently usable by third party wiki engines.
DEEP - Differential Evolution Entirely parallel method is applied to the biological data fitting problem. We introduce a new migration scheme, in which the best member of the branch substitutes the oldest member of th...
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ISBN:
(纸本)9783642032745
DEEP - Differential Evolution Entirely parallel method is applied to the biological data fitting problem. We introduce a new migration scheme, in which the best member of the branch substitutes the oldest member of the next branch, that provides a high speed of the algorithm convergence. We analyze the performance and efficiency of the developed algorithm on a test problem of finding the regulatory interactions within the network of gap genes that control the development of early Drosophila embryo. the parameters of a set of nonlinear differential equations are determined by minimizing the total error between the model behavior and experimental observations. the age of the individuum is defined by the number of iterations this individuum survived without changes. We used a ring topology for the network of computational nodes. the computer codes are available upon request.
A cellular automata (CA) approach is proposed for simulating a fluid flow through the porous material with tortuous channels and different wetting properties of pore walls. the approach aims to combine CA methods both...
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ISBN:
(纸本)9783642032745
A cellular automata (CA) approach is proposed for simulating a fluid flow through the porous material with tortuous channels and different wetting properties of pore walls. the approach aims to combine CA methods both for construction the structure of porous material model and to simulate the fluid flow through it. It is shown that any kind of tortuous structure may be obtained by pattern formation CA evolution, which is then used as a medium for Lattice Gas CA model application. the model is provided by special boundary conditions to account for additional tension forces between solid and liquid substances, determining the hydrophobic and hydrophilous properties of the material. the model has been tested on a small 2D array to obtain some dependencies of flow velocity on the tortuosity and wetting properties of pore walls. parallel implementation of flow simulation through a carbon electrode of a hydrogen fuel cell is also performed, demonstrating high efficiency (>70%) of parallelization.
the proceedings contain 190 papers. the topics discussed include: BDI planning approach to distributed multiagent based semantic search engine;hyperheuristics for a dynamic-mapped multi-objective island-based model;hi...
ISBN:
(纸本)3642024807
the proceedings contain 190 papers. the topics discussed include: BDI planning approach to distributed multiagent based semantic search engine;hyperheuristics for a dynamic-mapped multi-objective island-based model;high level abstractions for improving parallel image reconstruction algorithms;creation of semantic overlay networks based on personal information;adding an ontology to a standardized QoS-based MAS middleware;a snapshot algorithm for mobile ad hoc networks;introducing a distributed architecture for heterogeneous wireless sensor networks;a distributed architectural strategy towards ambient intelligence;reviewing the use of requirements engineering techniques in the development of multi-agent systems;pervasive evolutionary algorithms on mobile devices;a hybrid differential evolution algorithm for solving the terminal assignment problem;and development of a camera-based portable automatic inspection system for printed labels using neural networks.
the proceedings contain 21 papers. the topics discussed include: MANETKit: supporting the dynamic deployment and reconfiguration of ad-hoc routing protocols;automatic generation of network protocol gateways;heterogene...
ISBN:
(纸本)3642104444
the proceedings contain 21 papers. the topics discussed include: MANETKit: supporting the dynamic deployment and reconfiguration of ad-hoc routing protocols;automatic generation of network protocol gateways;heterogeneous gossip;CCD: efficient customized content dissemination in distributed publish/subscribe;calling the cloud: enabling mobile phones as interfaces to cloud applications;efficient locally trackable deduplication in replicated systems;QoS-aware service composition in dynamic service oriented environments;self-adapting service level in java enterprise edition;a cost-sensitive adaptation engine for server consolidation of multitier applications;rhizoma: a runtime for self-deploying, self-managing overlays;PAQ: persistent adaptive query middleware for dynamic environments;achieving coordination through dynamic construction of open workflows;COLA: optimizing stream processing applications via graph partitioning;and DSF: a common platform for distributed systems research and development.
Graphic Processing Unit (GPU), with many lightweight data-parallel cores, can provide substantial parallelcomputing power to accelerate several general purpose applications. Boththe AMD and NVIDIA corps provide thei...
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parallelcomputing has become an important research field in the last years. the availability of hardware and the success of grid computing have motivated this interest. In this paper we present a new approach for man...
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the proceedings contain 37 papers. the topics discussed include: stable protocols for the medium access control in wireless networks;new approaches of parallel calculus in groups of firms;mathematical theory of inform...
ISBN:
(纸本)9789604741342
the proceedings contain 37 papers. the topics discussed include: stable protocols for the medium access control in wireless networks;new approaches of parallel calculus in groups of firms;mathematical theory of information technology;AI, granular computing, and automata with structured memory;using cloud computing for E-Learning systems;quality model for M-Learning applications;robustness of information systems and technologies;using some web content mining techniques for Arabic text classification;a modified C-Means clustering algorithm;new implementation of unsupervised ID3 algorithm (NIU-ID3) using Visual ***;distributed algorithms for power saving optimization in sensor network;secure automatic ticketing system;and secure distribution of confidential information via self-destructing data.
the proceedings contain 21 papers. the special focus in this conference is on Service component composition or adaptation, Monitoring, Pervasive, Stream processing and Failure resilience. the topics include: Supportin...
ISBN:
(纸本)3642104444
the proceedings contain 21 papers. the special focus in this conference is on Service component composition or adaptation, Monitoring, Pervasive, Stream processing and Failure resilience. the topics include: Supporting the dynamic deployment and reconfiguration of Ad-Hoc routing protocols;automatic generation of network protocol gateways;heterogeneous gossip;efficient customized content dissemination in distributed publish/subscribe;enabling mobile phones as interfaces to cloud applications;efficient locally trackable deduplication in replicated systems;QoS-Aware service composition in dynamic service oriented environments;self-adapting service level in java enterprise edition;a cost-sensitive adaptation engine for server consolidation of multitier applications;a runtime for self-deploying, self-managing overlays;how to keep your head above water while detecting errors;persistent adaptive query middleware for dynamic environments;middleware for pervasive spaces: balancing privacy and utility;achieving coordination through dynamic construction of open workflows;power aware management middleware for multiple radio interfaces;optimizing stream processing applications via graph partitioning;persistent temporal streams;toward dependable, online upgrades in enterprise system;hardening distributed components with network volatility resiliency;automatic stress testing of multi-tier systems by dynamic bottleneck switch generation and a common platform for distributed systems research and development.
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