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IEEE International Conference on E-Commerce Technology Workshops

作者： Arun Anandasivam Stefan Buschek Rajkumar Buyya Institute for Information Systems and Management University of Karlsruhe Germany Grid Computing and Distributed Systems Laboratory Department of Computer Science and Software Engineering University of Melbourne Australia

ISBN: (纸本)9781424446469;9780769537559

Cloud resource providers in a market face dynamic and unpredictable consumer behavior. The way, how prices are set in a dynamic environment, can influence the demand behavior of price sensitive customers. A cloud resource provider has to decide on how to allocate his scarce resources in order to maximize his profit. The application of bid price control for evaluating incoming service requests is a common approach for capacity control in network revenue management. In this paper we introduce a customized version of the concept of self-adjusting bid prices and apply it to the area of cloud computing. Furthermore, we perform a simulation in order to test the efficiency of the proposed model.

关键词： Resource management Cloud computing Grid computing Consumer behavior Computational modeling Business distributed computing Control systems Management information systems Conference management

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A Flexible Framework for Quality Assurance of Software Artefacts with Applications to Java, UML, and TTCN-3 Test Specifications

A Flexible Framework for Quality Assurance of Software Artef...

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International Conference on Software Testing, Verification, and Validation, ICST

作者： Jens Nödler Helmut Neukirchen Jens Grabowski Software Engineering for Distributed Systems Group Institute for Computer Science Faculty for Mathematics and Computer Science University of Göttingen Gottingen Germany Faculty of Industrial Engineering Mechanical Engineering and Computer Science University of Iceland Reykjavik Iceland

Manual reviews and inspections of software artefacts are time consuming and thus, automated analysis tools have been developed to support the quality assurance of software artefacts. Usually, software analysis tools are implemented for analysing only one specific language as target and for performing only one class of analyses. Furthermore, most software analysis tools support only common programming languages, but not those domain-specific languages that are used in a test process. As a solution, a framework for software analysis is presented that is based on a flexible, yet high-level facade layer that mediates between analysis rules and the underlying target software artefact; the analysis rules are specified using high-level XQuery expressions. Hence, further rules can be quickly added and new types of software artefacts can be analysed without needing to adapt the existing analysis rules. The applicability of this approach is demonstrated by examples from using this framework to calculate metrics and detect bad smells in Java source code, in UML models, and in test specifications written using the testing and test control notations (TTCN-3).

关键词： Quality assurance Software quality Application software Java Unified modeling language Software testing Software tools Performance analysis Inspection Software performance

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Low-Complexity, High-Throughput Multiple-Access Wireless Protocol for Body Sensor Networks

Low-Complexity, High-Throughput Multiple-Access Wireless Pro...

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International Workshop on Wearable and Implantable Body Sensor Networks (BSN)

作者： Seung-mok Yoo Chong-Jing Chen Pai H. Chou RFID/USN Electronics and Telecommunications Research Institute Daejeon South Korea Center of Embedded Computer Systems University of California Irvine USA Department of Computer Science National Tsing Hua University Hsinchu Taiwan

Wireless systems that form a body-area network must be made small and low power without sacrificing performance. To achieve high-throughput communication in low-cost wireless body area networks, we propose a low complexity,¿pulling¿ MAC protocol. Such a network architecture consists of low-complexity nodes and moderate complexity base stations, which act as clients to pull data from the nodes that act as thin servers. This organization achieves intra-network collision-free multiple access as in TDMA but without expensive time synchronization. It also achieves high utilization of air bandwidth and adaptivity of CSMA protocols but without collision or complexity on the node side. Experimental results show that our pulling protocol achieves better good channel utilization of up to 52.8% and high data throughput of up to 432 Kbps. We also tested our MAC protocol on a wireless ECG system. Our MAC protocol can transmit ten simultaneous streams of data at 200 samples per second each from ten sensing devices.

关键词： Wireless sensor networks Wireless application protocol Body sensor networks Media Access Protocol Access protocols Base stations Network servers Time division multiple access Bandwidth Multiaccess communication

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PyMW - A Python module for desktop grid and volunteer computing

PyMW - A Python module for desktop grid and volunteer comput...

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International Symposium on Parallel and distributed Processing (IPDPS)

作者： Eric M. Heien Yusuke Takata Kenichi Hagihara Adam Kornafeld Graduate School of Information Science and Technology Osaka University Toyonaka Osaka Japan Laboratory of Parallel and Distributed Systems Computer and Automation Research Institute Hungarian Academy of Sciences (ATOMKI) Budapest Hungary

We describe a general purpose master-worker parallel computation Python module called PyMW. PyMW is intended to support rapid development, testing and deployment of large scale master-worker style computations on a desktop grid or volunteer computing environment. This module targets non-expert computer users by hiding complicated task submission and result retrieval procedures behind a simple interface. PyMW also provides a unified interface to multiple computing environments with easy extension to support additional environments. In this paper, we describe the internal structure and external interface to the PyMW module and its support for the Condor computing environment and the Berkeley Open Infrastructure for Network Computing (BOINC) platform. We demonstrate the effectiveness and scalability of PyMW by performing master-worker style computations on a desktop grid using Condor and a BOINC volunteer computing project.

关键词： Grid computing Concurrent computing computer interfaces Large-scale systems Virtual colonoscopy distributed computing computer networks Software packages Packaging Information science

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Benefit and evaluation of interactive 3D process data visualization in operator training of plant manufacturing industry

Benefit and evaluation of interactive 3D process data visual...

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IEEE International Conference on systems, Man and Cybernetics

作者： Dorothea Pantförder Birgit Vogel-Heuser Chair of Embedded Systems Faculty of Electrical Engineering/Computer Science University of Kassel Kassel Germany Institute of Information Technology in Mechanical Engineering Faculty of Mechanical Engineering Technische Universität München Munich Germany

Operator training without a process model is necessary in certain plant manufacturing industry's applications because the process models from the control theory perspective are still not available. This paper describes an experiment that analyzed the benefits of 3D data visualization integrated in HMI for process control in combination with different types of operator training to obtain process knowledge. The benefits of interactive 3D slider training in identifying errors during operation could be proven.

关键词： Data visualization Industrial training Manufacturing industries Process control Mechanical engineering Libraries Data analysis Cybernetics USA Councils embedded system

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Semantically supported SLA negotiation

Semantically supported SLA negotiation

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International Workshop on Grid Computing

作者： András Micsik Henar Muñoz Frutos Ioannis Kotsiopoulos Bastian Koller Department of Distributed Systems MTA SZTA Budapest Hungary Telefónica Investigaciòn y Desarrollo Madrid Spain School of Computer Science University of Manchester Institute of Science and Technology Manchester UK High Performance Computing Center Stuttgart University of Stuttgart Stuttgart Germany

The evolution of services market raises the need for automatic support for negotiating service use criteria. In order to reach an agreement, the negotiating parties need to develop a common understanding of the Quality of Service (QoS) terms which are part of the Service Level Agreement (SLA). The use of semantic annotations together with reasoning can increase the level of flexibility and automation in SLA management. A framework is presented for SLA negotiation allowing the two parties to use their own terminologies.

关键词： Ontologies Web services Terminology Quality of service Measurement units computer science High performance computing Automation Semantic Web Vocabulary

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Cytocomputation in a biologically inspired, dynamically reconfigurable hardware platform

Cytocomputation in a biologically inspired, dynamically reco...

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Congress on Evolutionary Computation

作者： J. A. Parra-Plaza A. Upegui J. Velasco-Medina Universidad del Valle Cali Colombia Computer Science and Engineering Department Pontificia Universidad Javeriana de Cali Colombia Institute of Reconfigurable and Embedded Digital Systems (REDS) University of Aplied Sciences of Western Switzerland Yverdon-les-Bains Switzerland Electrical and Electronics Engineering Universidad del Valle Cali Colombia

Cytocomputation is a computational paradigm based upon the macromolecular activity inside the cytoplasm of the biological cells. This paradigm can be used either as a source of inspiration for proposing novel computational architectures, or as a framework for modeling biological processes at the intracellular and intercellular levels. This paper presents the main characteristics of the paradigm and describes its implementation on the ubichip, a hardware platform specifically designed to support bioinspired architectures.

关键词： Hardware Proteins Biology computing Biochemistry Biological system modeling Genetics Biological information theory Cells (biology) Biomembranes Genomics

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An approach to quality engineering of TTCN-3 test specifications

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International Journal on Software Tools for Technology Transfer 2008年第4期10卷 309-326页

作者： Neukirchen, Helmut Zeiss, Benjamin Grabowski, Jens Software Engineering for Distributed Systems Group Institute for Computer Science University of Göttingen Lotzestr. 16-18 Göttingen 37083 Germany

Experience with the development and maintenance of large test suites specified using the Testing and Test Control Notation (TTCN-3) has shown that it is difficult to construct tests that are concise with respect to quality aspects such as maintainability or usability. The ISO/IEC standard 9126 defines a general software quality model that substantiates the term "quality" with characteristics and subcharacteristics. The domain of test specifications, however, requires an adaption of this general model. To apply it to specific languages such as TTCN-3, it needs to be instantiated. In this paper, we present an instantiation of this model as well as an approach to assess and improve test specifications. The assessment is based on metrics and the identification of code smells. The quality improvement is based on refactoring. Example measurements using our TTCN-3 tool TRex demonstrate how this procedure is applied in practise. © Springer-Verlag 2008.

关键词： computer software selection and evaluation

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Automatic generation and evolution of model transformations using ontology engineering space

Automatic generation and evolution of model transformations ...

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作者： Roser, Stephan Bauer, Bernhard Programming of Distributed Systems Institute of Computer Science University of Augsburg Augsburg D-86135 Germany

ISBN: (纸本)3540921478

Model-driven software development facilitates faster and more flexible integration of information and communication systems. It divides system descriptions into models of different view points and abstraction levels. To effectively realize cross-organisational collaborations, it is an important prerequisite to exchange models between different modelling languages and tools. Knowledge is captured in model transformations, which are continuously adjusted to new modelling formats and tools. However, interoperability problems in modelling can hardly be overcome by solutions that essentially operate at syntactical level. This paper presents a novel approach using the capabilities of semantic technologies in order to improve cross-organisational modelling by automatic generation and evolution of model transformations. © 2008 Springer Berlin Heidelberg.

关键词： Modeling languages

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Dynamic weaving of components in a distributed environment 9

Dynamic weaving of components in a distributed environment

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9th ACM/IFIP/USENIX International Middleware Conference, Middleware 2008

作者： Söldner, Guido Kapitza, Rüdiger Schober, Sven Department of Computer Science 4 Friedrich-Alexander University Erlangen-Nuremberg Germany Institute of Distributed Systems Ulm University Germany

ISBN: (纸本)9781605583693

In ubiquitous computing, dynamic adaptation and the evolvability of software become increasingly important. This paper proposes AOCI, an aspect-oriented component infrastructure that combines the core ideas of aspect-oriented programming (AOP) and component based systems. Components are usually considered as black boxes that can be combined to form complex systems. In the context of our infrastructure, components export possible points of adaptation, which are tagged with ontological information. This information enables the use of AOP techniques without detailed knowledge about the component's internals, enabling distributed and dynamic adaptation. Copyright 2008 ACM.

关键词： Aspect oriented programming

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