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KpbiMuKo 2009 CriMiCo - 2009 19th International Crimean Conference Microwave and Telecommunication Technology

作者： Izquierdo, Paoli Janeiro, Jordan Hübsch, Gerald Springer, Thomas Schill, Alexander Department of Computer Science Institute of System Architecture Chair of Computer Networks Dresden Technical University Dresden Sachsen 01187 Germany

ISBN: (纸本)9789663352497

The user interface generation process is still a complex issue. The manual creation process is time consuming and complex because it requires the combination of the application developer work and the user interface designer work. Therefore, many approaches investigate the automatic user interface generation. However, currently such approaches are not able to take usability aspects into account, due to the lack of information for such a process. Thus, we propose a tool which intends to ease and enhance the automatic user interface generation process for services by introducing service annotations that are attached to services and provide additional information for the process of automatic user interface generation. © 2009: CriMiCo'2009 Organizing Committee.

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Improved meet-in-the-middle attacks on 7-round AES-192 and 8-round AES-256

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Tongxin Xuebao/Journal on Communications 2010年第9 A期31卷 197-201页

作者： Dong, Xiao-Li Hu, Yu-Pu Chen, Jie Li, Shun-Bo Yang, Yang Key Laboratory of Computer Networks and Information Security of Ministry of Education Xidian University Xi'an 710071 China State Key Laboratory of Information Security Institute of Software Chinese Academy of Sciences Beijing 100049 China School of Science Xi'an University of Architecture and Technology Xi'an 710055 China

A new variant of 5-round distinguisher of meet-in-the-middle attack on AES was constructed by exploiting the properties of the round transform of AES. Based on the variant of distinguisher, meet-in-the-middle attacks on 7-round AES-192 and 8-round AES-256 were presented by using the time-memory tradeoff approach. It is shown that the new results are better than the cryptanalytic results presented at FSE2008 on reduced AES in terms of the time complexity and the memory complexity.

关键词： Cryptography

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A monitoring and adaptation architecture for the future Internet of Services

A monitoring and adaptation architecture for the future Inte...

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IADIS International Conference WWW/Internet 2009, ICWI 2009

作者： Braun, Iris Wauer, Matthias Reichert, Sandro Spillner, Josef Strunk, Anja Schill, Alexander Technische Universität Dresden Faculty of Computer Science Institute of Systems Architecture Department of Computer Networks Nöthnitzer Str. 46 Dresden01187 Germany

ISBN: (纸本)9789728924935

The article presents the architecture of a distributed platform for the future Internet of Services, where services can be provided and sold over so-called service market places. We focus on the description of the monitoring and adaptation mechanisms in the service execution phase which are necessary to ensure the quality of service executions and the reliability of service level agreements. © 2009 IADIS.

关键词： Web services

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CASEMANS 2009: The 3rd ACM International Workshop on Context-Awareness for Self-Managing Systems 09

CASEMANS 2009: The 3rd ACM International Workshop on Context...

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3rd ACM International Workshop on Context-Awareness for Self-Managing Systems, Casemans 2009

作者： Dargie, Waltenegus Kuwahara, Noriaki Technical University of Dresden Institute for Systems Architecture Department of Computer Networks Dresde Germany Kyoto Institute of Technology Graduate School of Science and Technology Kyoto Japan

ISBN: (纸本)9781605584393

This year, the 3rd ACM International Workshop on Context-Awareness for Self-Managing Systems (Devices, Applications and networks) (CASEMANS 2009) is organized in Nara, Japan. This article summarizes the objectives of the CASE-MANS 2009 workshop and gives an overview of the papers that are selected for presentation and publication. Copyright 2009 ACM.

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ISAR imaging of ship target based on LMSF signal

ISAR imaging of ship target based on LMSF signal

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2009 Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2009

作者： Zhang, Long Si, Dong Sen He, Wei Xing, Meng Dao State Key Lab for Radar Signal Processing Xidian University Shaanxi 710071 China Xi'an Polytechnic University Shaanxi 710048 China Institute of Computer Architecture and Networks Xi'an Jiaotong University Xi'an 710049 China

ISBN: (纸本)9781424427314

To obtain high resolution ISAR image of ship target in motion with narrow-bandwidth T/R devices and a low-speed A/D sampler, an effective imaging method based on Linearly Modulated Stepped Frequency (LMSF) is proposed in this paper. Firstly, the signal model is developed and analyzed. Secondly, a band coherent processing method is proposed to eliminated the error induced by the translational motion and the high range profile is obtained. Finally, the high resolution of cross range is achieved by using the DechirpClean techinque. The theory analysis and the resutl of real data processing demonstrate the performance of the proposed method. ©2009 IEEE.

关键词： Ships

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Improving Task-driven Software Development Approaches for Creating Service-Based Interactive Applications by Using Annotated Web Services

Improving Task-driven Software Development Approaches for Cr...

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International Conference on Next Generation Web Services Practices (NWeSP)

作者： Marius Feldmann Gerald Hubsch Thomas Springer Alexander Schill Department of Computer Science Institute of Systems Architecture Computer Networks Group Technische Universität Dresden Dresden Germany

The aspect of human interaction becomes more and more relevant for service-oriented applications. On one hand, current development approaches support the composition of services but neglect the creation of user interfaces. On the other hand, task-based modeling of user interactions is well established but poorly integrated into service-oriented development. In this paper we propose an integrated modelling approach for the task-driven development of interactive service-oriented applications. Our central concept is the introduction of annotations as part of the Web service description. These annotations cover information relevant for the semi-automatic generation of task models and user interfaces. We present the annotation concept as well as concepts for the integration of the annotations into a task-driven software development methodology.

关键词： Programming Application software Web services Logic User interfaces Skeleton Inference mechanisms Next generation networking computer science computer architecture

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An annotation tool for enhancing the user interface generation process for services

An annotation tool for enhancing the user interface generati...

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International Crimean Conference on Microwave & Telecommunication Technology

作者： Paoli Izquierdo Jordan Janeiro Gerald Hubsch Thomas Springer Alexander Schill Department of Computer Science Institute of System Architecture Chair of Computer Networks Dresden University of Technology Dresden Sachsen-Anhalt Germany

关键词： User interfaces Web services Data mining Inference mechanisms Graphical user interfaces computer science computer architecture computer networks Electronic mail Application software

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Set of model reduction rules and algorithms for web services composition under orchestration pattern

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Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University 2009年第6期43卷 20-23+47页

作者： Yang, Huaizhou Li, Zengzhi Institute of Computer Architecture and Networks Xi'an Jiaotong University Xi'an 710049 China State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing 100876 China

The performance calculation of Web services composition process in large state space is time-consuming, and is difficult to fulfill the real-time performance analysis. Therefore, a process reduction algorithm is presented to accelerate the calculation of system performance. The Web services composition process is modeled using the generalized stochastic Petri net. Through auto-detecting the reductive subnet, some regular structures, such as sequence, choice, concurrent and loop structures, can be eliminated under the precondition of preserving the timing constraints. The sub processes which can be calculated independently are separated. A large scale model can thus be reduced within a certain period. Experimental results with multiform models indicate that the system response time and throughput are obtained rapidly by using the algorithm in the dynamic and adaptive composition process. The algorithm can be applied to online performance analysis of most Web services composition process.

关键词： Stochastic systems

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Extended GSPN modeling and reduction algorithms for rapid performance analysis of service composition system

Extended GSPN modeling and reduction algorithms for rapid pe...

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IEEE International Conference on Intelligent Computing and Intelligent Systems (ICIS)

作者： Huaizhou Yang Zengzhi Li State Key Laboratory of Networking and Switching Beijing University of Posts and Telecommunications Beijing China Institute of Computer Architecture & Networks Xi''an Jiaotong University Xi'an China

ISBN: (纸本)9781424447374;9781424447541

A service composition system can be constructed via integration and collaboration of many component services. The system performance needs to be obtained rapidly for the purpose of dynamic and adaptive management. An EGSPN (extended generalized stochastic Petri net) model is presented to reflect the service composition system with complex timing constraints in a compact and comprehensible manner. The various categories of timing constraints are associated to place, transition and arc of EGSPN respectively. Furthermore, in order to accelerate the calculation of system performance and to avoid the explosion of state space, a set of model reduction rules are presented. The corresponding reduction algorithms are designed to achieve automatic model reduction. The experiments based on multiform models indicate that a large model can be reduced within satisfying period. The algorithms can help to make rapid performance analysis of service composition system.

关键词： Performance analysis System performance Timing Reduced order systems Collaboration Stochastic systems Acceleration Explosions State-space methods Algorithm design and analysis

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Mean Shift Based Collaborative Localization with Dynamically Clustering for Wireless Sensor networks

Mean Shift Based Collaborative Localization with Dynamically...

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WRI International Conference on Communications and Mobile Computing, CMC

作者： Quan Zhou Xiaowei Li Yongjun Xu Institute of Computing Technology Key Laboratory of Computer System and Architecture Chinese Academy and Sciences Beijing China Institute of Computing Technology Laboratory of Sensor Networks Chinese Academy and Sciences Beijing China

Mean shift is a nonparametric method to estimate the density gradient, which iteratively computes the mean of observations and shifts to the centroid until reach a predefined end condition. This paper proposes a mean shift based scheme for localization and tracking in wireless sensor *** shift is a generalized framework, and range-free centroid and range-based W-Centrod are both the special cases of this generalized framework. A dynamically clustering protocol is proposed to support the generalized framework. Analysis and simulation results show that the communication overhead and jitter are reduced to 1/3 of traditional algorithms. The positioning accuracy of proposed algorithm with optimal weight increases 28% and 11% in comparison to Centroid and W-Centroid.

关键词： Wireless sensor networks computer networks Clustering algorithms Laboratories Protocols Equations Mobile communication Mobile computing International collaboration computer architecture

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