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International Symposium on Networks-on-Chip (NOCS)

作者： Awet Yemane Weldezion Matt Grange Dinesh Pamunuwa Zhonghai Lu Axel Jantsch Roshan Weerasekera Hannu Tenhunen School of Information and Communication Technologies Department of Electronics Computer and Software Systems KTH Royal Institute of Technology Kista Sweden Centre of Microsystems Engineering Department of Engineering Lancaster University Lancaster UK

Design constraints imposed by global interconnect delays as well as limitations in integration of disparate technologies make 3D chip stacks an enticing technology solution for massively integrated electronic systems. The scarcity of vertical interconnects however imposes special constraints on the design of the communication architecture. This article examines the performance and scalability of different communication topologies for 3D network-on-chips (NoC) using through-silicon-vias (TSV) for inter-die connectivity. Cycle accurate RTL-level simulations are conducted for two communication schemes based on a 7-port switch and a centrally arbitrated vertical bus using different traffic patterns. The scalability of the 3D NoC is examined under both communication architectures and compared to 2D NoC structures in terms of throughput and latency in order to quantify the variation of network performance with the number of nodes and derive key design guidelines.

关键词： Scalability Network-on-a-chip Delay Switches Network topology Circuit topology Through-silicon vias Communication switching Telecommunication traffic Traffic control

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3-D memory organization and performance analysis for multi-processor network-on-chip architecture

3-D memory organization and performance analysis for multi-p...

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IEEE International Conference on 3D System Integration, 3DIC

作者： Awet Yemane Weldezion Zhonghai Lu Roshan Weerasekera Hannu Tenhunen School of Information and Communication Technologies Department of Electronics Computer and Software Systems KTH Royal Institute of Technology Kista Sweden Centre of Microsystems Engineering Department of Engineering Lancaster University Lancaster UK

Several forms of processor memory organizations have been in use to optimally access off-chip memory systems mainly the hard disk drives (HDD). Recent trends show that the solid state drives (SSD) such as flash memories replacing HDDs and multi-processor memory system realized in a single 3-D structure with network-on-chip (NOC) architecture as a communication medium. This paper discusses high level memory organization and architectural modeling and simulation based on 3D NOC. A comparative analysis among several models including Dance-hall, Sandwich, Terminal, Per-layer and mixed architectures is done. Simulations in cycle accurate 3-D NOC VHDL model are done to evaluate the performance each architecture in uniform and local traffic patterns.

关键词： Performance analysis Network-on-a-chip

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Online temporal pattern learning

Online temporal pattern learning

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International Joint Conference on Neural Networks (IJCNN)

作者： N. Farahmand M.H. Dezfoulian H. GhiasiRad A. Mokhtari A. Nouri Axaya Research Group Laboratory of Multi-Agent Systems and Distributed Artificial Intelligence Department of Computer Software Engineering Bu-Ali Sina University Iran

This paper describes a biologically motivated approach, using hierarchical temporal memory (HTM), to build a high-level self-organizing visual system for a soccer bot. Meanwhile it presents two unsupervised online learning algorithms for temporal patterns in HTMs. The algorithms were implemented in a simulated soccer bot for a real-world evaluation. After a training phase, the robot was able to recognize different static objects in the soccer field. It also learned and recognized high-level objects that are composed of simpler objects, with position invariance and was also able to learn and recognize motions in the objects, all in a completely unsupervised manner.

关键词： Brain modeling Neural networks Visual system Biological system modeling Hidden Markov models Robots Data processing Humans Recurrent neural networks Kernel

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A distributed heuristic for decentralized workflow scheduling in global Grids

A distributed heuristic for decentralized workflow schedulin...

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International Workshop on Grid Computing

作者： Mustafizur Rahman Rajiv Ranjan Rajkumar Buyya Grid Computing and Distributed Systems Laboratory Department of Computer Science and Software Engineering University of Melbourne Australia Service Oriented Computing Research Group School of Computer Science and Engineering University of New South Wales Australia

Efficient scheduling is a key concern for the effectual execution of performance driven Grid applications, such as workflows. Many list heuristics have been developed for scheduling workflows in centralized Grid environment. However, in this paper, we present a distributed list heuristic for decentralized scheduling of workflow applications in global Grids. The simulation results show that the proposed scheduling approach is scalable with respect to increased workload on the system.

关键词： Processor scheduling Grid computing Resource management computer science Scheduling algorithm Laboratories software engineering Distributed computing Application software Peer to peer computing

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Dependable workflow scheduling in global Grids

Dependable workflow scheduling in global Grids

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International Workshop on Grid Computing

In this paper, a reputation-based Grid workflow scheduling algorithm is proposed to counter the effect of inherent unreliability and temporal characteristics of computing resources in large scale, decentralized Grid overlays. The proposed approach builds upon structured peer-to-peer indexing and overlay networking techniques to create a scalable wide-area networking of Grid sites for supporting dependable scheduling of applications. The scheduling algorithm considers reliability of a Grid resource as a statistical property, which is globally computed in the decentralized Grid overlay based on dynamic feedbacks or reputation scores assigned by individual service consumers (Grid Resource Brokers). The proposed algorithm can dynamically adapt to changing resource conditions and offer significant performance gains as compared to traditional approaches in the event of unsuccessful job execution or resource failure. We evaluate and demonstrate the feasibility of our approach through an extensive trace driven simulation. The results show that our scheduling technique can reduce the makespan up to 50% and successfully isolate the failure-prone resources from the system.

关键词： Processor scheduling Scheduling algorithm Grid computing Counting circuits Large-scale systems Peer to peer computing Indexing Feedback Heuristic algorithms Performance gain

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GSO: Designing a well-founded service ontology to support dynamic service discovery and composition

GSO: Designing a well-founded service ontology to support dy...

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International Workshop on Enterprise Distributed Object Computing, EDOCW

作者： Luiz Olavo Bonino da Silva Santos Giancarlo Guizzardi Renata Silva Souza Guizzardi Eduardo Goncalves da Silva Luis Ferreira Pires Marten van Sinderen Software Engineering Group University of Twente Enschede Netherlands Department of Computer Science UFES Vitoria Brazil Information Systems Group University of Twente Enschede Netherlands

A pragmatic and straightforward approach to semantic service discovery is to match inputs and outputs of user requests with the input and output requirements of registered service descriptions. This approach can be extended by using pre-conditions, effects and semantic annotations (meta-data) in an attempt to increase discovery accuracy. While on one hand these additions help improve discovery accuracy, on the other hand complexity is added as service users need to add more information elements to their service requests. In this paper we present an approach that aims at facilitating the representation of service requests by service users, without loss of accuracy. We introduce a goal-based service framework (GSF) that uses the concept of goal as an abstraction to represent service requests. This paper presents the core concepts and relations of the goal-based service ontology (GSO), which is a fundamental component of the GSF, and discusses how the framework supports semantic service discovery and composition. GSO provides a set of primitives and relations between goals, tasks and services. These primitives allow a user to represent its goals, and a supporting platform to discover or compose services that fulfil them.

关键词： Ontologies computer science Pervasive computing software engineering Information systems Impedance matching computer industry Protocols Humans computer interfaces

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Towards the development of an autonomic network management architecture

Towards the development of an autonomic network management a...

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International Conference on Communications and Networking in China (CHINACOM)

作者： John Strassner James Won-Ki Hong Department of Computer Science and Engineering Pohang University of Science and Technology Pohang South Korea Telecommunications Systems & Software Group Waterford Institute of Technology Waterford Ireland

The current Internet did not define any inherent management constructs and mechanisms; such concepts were added after networking standards and architectures were constructed. This also influenced network management for other types of networks. This paper is the first in a series that explores concepts for a new autonomic approach to network management that can be used for current and next generation networks as well as for the Future Internet.

关键词： Technology management IP networks computer network management software development management engineering management computer architecture Next generation networking Information management Telecommunication network management Middleware

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The design of an Autonomic Element for managing emerging networks and services

The design of an Autonomic Element for managing emerging net...

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International Conference on Ultra Modern Telecommunications and Workshops (ICUMT)

作者： John Strassner James Won-Ki Hong Sven van der Meer Department of Computer Science and Engineering Pohang University of Science and Technology Pohang South Korea Telecommunications Software & Systems Group Waterford Institute of Technology Waterford Ireland

Next generation networks, as well as the future Internet, aim to provide context-sensitive business services that adapt to changing user needs, business goals, and environmental conditions. This paper describes the composition of an autonomic element, as a fundamental part of an autonomic architecture, which uses information models and semantics to link the business services with the services provided by the underlying network devices. This linkage is inherently context-aware, and allows context changes to determine the impact of changes in the network towards business services and vice versa. The described autonomic element is a programmable toolbox supporting the clean-slate approach as well as evolutionary approaches for the future Internet.

关键词： IP networks Web and internet services Context-aware services computer architecture Application software computer network management Environmental management Technology management engineering management computer science

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Knowledge Management in the Global software engineering Environment

Knowledge Management in the Global Software Engineering Envi...

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International Conference on Global software engineering (ICGSE)

作者： Ita Richardson Miriam O'Riordan Valentine Casey Bridget Meehan Ivan Mistrik Lero-The Irish Software Engineering Research Centre University of Limerick Limerick Ireland Software System Research Centre Bournemouth University Dorset UK Department of Computer Science and Information Systems University of Limerick Limerick Ireland

In this paper we consider the importance of explicit knowledge management, taking into account the growth of global software engineering and the importance of corporate knowledge. We conclude by suggesting specific areas of research which should be considered important for the implementation of knowledge management within global software engineering environments.

关键词： Knowledge management software engineering Programming Environmental management Globalization Costs engineering management software testing System testing software systems

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ERRATUM: 'THE ALLEN TELESCOPE ARRAY TWENTY-CENTIMETER SURVEY—A 690 DEG2, 12 EPOCH RADIO DATA SET. I. CATALOG AND LONG-DURATION TRANSIENT STATISTICS' (2010, ApJ, 719, 45)

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The Astrophysical Journal 2010年第1期724卷

作者： Steve Croft Geoffrey C. Bower Rob Ackermann Shannon Atkinson Don Backer Peter Backus WilliamC. Barott Amber Bauermeister Leo Blitz Douglas Bock Tucker Bradford Calvin Cheng Chris Cork Mike Davis Dave DeBoer Matt Dexter John Dreher Greg Engargiola Ed Fields Matt Fleming James R. Forster Colby Gutierrez-Kraybill Gerry Harp Tamara Helfer Chat Hull Jane Jordan Susanne Jorgensen Garrett Keating Tom Kilsdonk Casey Law Joeri van Leeuwen John Lugten Dave MacMahon Peter McMahon Oren Milgrome Tom Pierson Karen Randall John Ross Seth Shostak Andrew Siemion Ken Smolek Jill Tarter Douglas Thornton Lynn Urry Artyom Vitouchkine Niklas Wadefalk Jack Welch Dan Werthimer David Whysong Peter K. G. Williams Melvyn Wright Department of Astronomy University of California Berkeley 601 Campbell Hall #3411 Berkeley CA 94720 USA SETI Institute Mountain View CA 94043 USA Electrical Computer Software and Systems Engineering Department Embry-Riddle Aeronautical University Daytona Beach FL 32114 USA Minex Engineering Antioch CA 94509 USA CSIRO/ATNF Epping NSW 1710 Australia ASTRON 7990 AA Dwingeloo The Netherlands Lawrence Livermore National Laboratory Livermore CA 94550 USA Electrical Engineering Department Stanford University Stanford CA 94305 USA Department of Microtechnology and Nanoscience-MC2 Chalmers University of Technology SE-412 96 Göteborg Sweden

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