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Increasing reliability of intelligent manufacturing systems by adaptive optimization and safety supervision

Increasing reliability of intelligent manufacturing systems ...

引用

作者： Ding, Hao Kain, Sebastian Schiller, Frank Stursberg, Olaf Institute of Control and System Theory Department of Electrical Engineering and Computer Science University of Kassel D-34109 Kassel Germany Institute of Information Technology in Mechanical Engineering Technische Universität München D-85748 Garching near Munich Germany

ISBN: (纸本)9783902661463

For concurrent consideration of reliability and safety of manufacturing systems on the one hand, and flexibility and performance on the other, a specialized control architecture was proposed recently. It consists of a strategic controller for online computing (sub-)optimal control strategies under consideration of dynamic models, safety specifications, and learned knowledge. The second building block is an operational controller for providing certified safety when dealing with behaviors that are not completely predictable, for instance in case of faults. This paper extends the architecture by a specific technique for the strategic controller: For the case of an intelligent manufacturing system which reacts adaptively to a human operator, control trajectories for a robot arm are computed online such that collision with the operator is excluded. The computation is based on solving a mixed-integer programming problem that takes a dynamic safety area around the operator into account as constraint. © 2009 IFAC.

关键词： Reliability

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X-ray image denoising with directional support value transform

X-ray image denoising with directional support value transfo...

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MIPPR 2009 - Medical Imaging, Parallel Processing of Images, and Optimization Techniques: 6th International Symposium on Multispectral Image Processing and Pattern Recognition

作者： Zheng, Sheng Hendriks, Emile A. Lei, Bangjun Hao, Wei Institute of Intelligent Vision and Image Information China Three Gorges University Yichang 443002 China Information and Communication Theory Group Faculty of Electrical Engineering Mathematics and Computer Science Delft University of Technology 2628CD Delft Netherlands

ISBN: (纸本)9780819478085

Under the support vector machine framework, the support value analysis-based image fusion has been studied, where the salient features of the original images are represented by their support values. The support value transform (SVT)-based image fusion approach have demonstrated some advantages over the existing methods in multisource image fusion. In this paper, the directional support value transform (DSVT) is applied to the denoising of some standard images embedded in white noise and the X-ray images. This directional transform is not norm-preserving and, therefore, the variance of the noisy support values will depend on the scales. And then we use the hard-thresholding rule for estimating the unknown support values in different scales and the thresholding is scale-dependent. The peak signal noise ratio (PSNR) is used as an "objective" measure of performance, and our own visual capabilities are used to identify artifacts whose effects may not be well-quantified by the PSNR value. The experimental results demonstrate that simple thresholding of the support values in the proposed method is very competitive with techniques based on wavelets, including thresholding of decimated or undecimated wavelet transforms. © 2009 Copyright SPIE - The International Society for Optical engineering.

关键词： Image fusion

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Privacy protection for RFID data 09

Privacy protection for RFID data

引用

24th Annual ACM Symposium on Applied Computing, SAC 2009

作者： Fung, Benjamin C. M. Cao, Ming Desai, Bipin C. Xu, Heng Concordia Institute for Information Systems Engineering Concordia University Montreal QC Canada Department of Computer Science and Software Engineering Concordia University Montreal QC Canada College of Information Sciences and Technology Penn State University University Park PA 16802 United States

ISBN: (纸本)9781605581668

Radio Frequency IDentification (RFID) is a technology of automatic object identification. Retailers and manufacturers have created compelling business cases for deploying RFID in their supply chains. Yet, the uniquely identifiable objects pose a privacy threat to individuals. In this paper, we study the privacy threats caused by publishing RFID data. Even if the explicit identifying information, such as name and social security number, has been removed from the published RFID data, an adversary may identify a target victim's record or infer her sensitive value by matching a priori known visited locations and timestamps. RFID data by default is high-dimensional and sparse, so applying traditional K-anonymity to RFID data suffers from the curse of high dimensionality, and would result in poor data usefulness. We define a new privacy model, develop an anonymization algorithm to accommodate special challenges on RFID data, and evaluate its performance in terms of data quality, efficiency, and scalability. To the best of our knowledge, this is the first work on anonymizing high-dimensional RFID data. Copyright 2009 ACM.

关键词： Data mining

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A portable and efficient User Dispatching Mechanism for multicore systems

A portable and efficient User Dispatching Mechanism for mult...

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15th IEEE International Conference on Embedded and Real-Time Computing Systems and Applications, RTCSA 2009

作者： Tu, Tang-Hsun Hsueh, Chih-Wen Chang, Rong-Guey Embedded System and Wireless Network Laboratory Graduate Institute of Networking and Multimedia National Taiwan University Taipei 106 Taiwan System Software Laboratory Graduate Institute of Computer Science and Information Engineering National Chung Cheng University Chia-Yi 621 Taiwan

ISBN: (纸本)9780769537870

In multicore environment, using multiple threads is a common useful approach to improve application performance. Nevertheless, even in many simple applications, the performance might degrade when the number of threads increases. Users usually impute this phenomenon to the overhead of creation or termination of threads. However, in our observation, the more significant effect is the dispatching of threads. We discuss the problems on using threads, and present a novel User Dispatching Mechanism (UDispatch) that provides controllability in user space to improve application performance. Since user threads cannot directly control system resources, a virtual device is adopted between user space and operating system for portability and efficiency instead of adding new system calls through kernel modification. We also experiment UDispatch through multi-threading multimedia applications. The results show that a skip-line application speeds up to 111.3% and 111.6% on a 4-core machine and an 8-core machine, respectively, and an optimized H.264/AVC decoder speeds up to 18.4% on a 4-core machine. © 2009 IEEE.

关键词： computer architecture

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A service-oriented analysis and modeling using use case approach

A service-oriented analysis and modeling using use case appr...

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2009 International Conference on Computational Intelligence and software engineering, CiSE 2009

作者： Si, Huayou Ni, Yulin Yu, Lian Chen, Zhong Software Institute School of Electronics Engineering and Computer Science Peking University Beijing 100871 China Department of Information Engineering Zhejiang Forest University Lin'an 311300 China Key Laboratory of High Confidence Software Technologies Ministry of Education Beijing 100871 China School of Software and Microelectronics Peking University Beijing 102600 China

ISBN: (纸本)9781424445073

In the paper, we analyze the shortages of Service-Oriented Analysis and Design (SOAD) methodologies, and propose a SOAD method based on Use Case approach. Therefore, a service model is designed to facilitate service identification from Use Case script. Moreover, a process is provided as a guideline to aid an analyst to accomplish high-quality service identification with the method. By analyzing basic characteristics and an illustration of the method, we can conclude that the method has several strong points compared to other methods which are based on business process modeling and enterprise architecture. ©2009 IEEE.

关键词： Design

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Test-Data Generation for Web Services Based on Contract Mutation

Test-Data Generation for Web Services Based on Contract Muta...

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2009 Third IEEE International Conference on Secure Integration and Reliability Improvement SSIRI 2009(第三届IEEE安全软件集成及可信性改进国际会议)

作者： Ying-Na Li Ying Jiang Shan-Shan Hou Lu Zhang Faculty of Information Engineering and Automation Kunming University of Science and Technology Kun Institute of Software School of Electronics Engineering and Computer Science Peking University Be Institute of Software School of Electronics Engineering and Computer Science Peking University Be

ISBN: (纸本)9780769537580

software testing is one of the most important techniques used to assure the quality of Web Services at present. Test-data generation is an important topic in Web Services testing. The quality of test data will influence the efficiency and cost when testing Web Services. Based on the contract-based mutation testing technique, this paper presents a method of automated test-data generation for Web Services. First, according to the description information and contracts in WSDL documents of Web Services, initial test data are generated automatically by the random method. Then the test data are selected using contract mutation testing. This method can generate a test suite meeting a certain contract mutation score, which indicates the quality and efficiency of testing. Finally, we have developed a prototype on the *** platform, and carried out some experiments. The results have shown that the proposed method is effective in automated test-data generation for Web Services.

关键词： Web Service observational data contract data generation program testing

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A service-oriented analysis and design approach based on data flow diagram

A service-oriented analysis and design approach based on dat...

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2009 International Conference on Computational Intelligence and software engineering, CiSE 2009

作者： Zhao, Yun Si, Huayou Ni, Yulin Qi, Hengnian Department of Information Engineering Zhejiang Forest University Lin'an 311300 China Software Institute School of Electronics Engineering and Computer Science Peking University Beijing 100871 China Key Laboratory of High Confidence Software Technologies Ministry of Education Beijing 100871 China School of Software and Microelectronics Peking University Beijing 102600 China

ISBN: (纸本)9781424445073

In the paper, we analyze the shortages of Service-Oriented Analysis and Design (SOAD) methodologies, and then review the features of data flow diagram as a kind of requirement analysis technology. Finally, we propose an SOAD method using DFD diagram. Therefore, a process is provided as a guideline to aid analyst to accomplish high-quality service identification with the method. Through an illustration of the SOAD, we can conclude that the method has several strong points compared to methodologies else based on business process and enterprise architecture. ©2009 IEEE.

关键词： information services

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Sequential estimation of the steady-state variance in discrete event simulation

Sequential estimation of the steady-state variance in discre...

引用

23rd European Conference on Modelling and Simulation, ECMS 2009

作者： Schmidt, Adriaan Pawlikowski, Krzysztof Mcnickle, Don Institute for Theoretical Information Technology RWTH Aachen University D-52056 Aachen Germany University of Canterbury Computer Science and Software Engineering Christchurch New Zealand Department of Management University of Canterbury Christchurch New Zealand

ISBN: (纸本)0955301882

For sequential output data analysis in non-terminating discrete-event simulation, we consider three methods of point and interval estimation of the steady-state variance. We assess their performance in the analysis of the output of queueing simulations by means of experimental coverage analysis. Over a range of models, estimating variances turns out to involve considerably more observations than estimating means. Thus, selecting estimators with good performance characteristics is even more important. © ECMS.

关键词： Discrete event simulation

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A hierarchical alarm processing model for intrusion detection system

A hierarchical alarm processing model for intrusion detectio...

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2009 International Conference on information engineering and computer science, ICIECS 2009

作者： Xiao, Lizhong Liu, Yunxiang Wu, Zhongdai Department of Computer Science and Information Engineering Shanghai Institute of Technology Shanghai China Postdoctor Mobile Station of Control Science and Engineering East China University of Science and Technology Shanghai China Postdoctor Work Station of Kunshan Software Park Kunshan Jiangsu China China Shipping Information Systems Co. Ltd. Shanghai China

ISBN: (纸本)9781424449941

For the alarm flooding problem, a hierarchical alarm processing model is studied to filter, reduce and correlate alarms. In filtering, false alarms are eliminated with repository. In reduction, a reduction algorithm is designed to remove the duplicate alarms in real time. In correlation, a frequent episodes algorithm is implemented on training data to help clustering-based correlation algorithm find the intrusion patterns. Through the above processing, the false and invalid alarms are eliminated, which eases the networks system and administrator's burden. Meanwhile, intrusion patterns can be found and alarm prediction can be reported. Experimental results show the model is effective. ©2009 IEEE.

关键词： Clustering algorithms

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A New Method for People-Counting Based on Support Vector Machine

A New Method for People-Counting Based on Support Vector Mac...

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International Workshop on Intelligent Networks and Intelligent Systems (ICINIS)

作者： Fang Zhu Xinwei Yang Junhua Gu Ruixia Yang Information engineering Institute Hebei University of Technology Tianjin China Computer science and software Institute Hebei University of Technology Tianjin China

This paper proposed a new method for infrared people-counting. According to the characteristics of the time continuous data collected by infrared sensors, the pattern recognition idea is introduced in the data processing procedure. After the special pretreatment, adaptive segmentation and feature extraction for the people-counting data, the feature vector is used as the inputs of the trained support vector machine classifier to classify and statistic the total number of the people who go through the infrared sensor area in a period of time. Compared with traditional people-counting using sensor, this method is more accurate and it can count the people number at the situation that several people go through the infrared sensor at the same time. Finally, the experiments indicate that the method can be applied in actual application.

关键词： Support vector machines Paper technology Infrared sensors Support vector machine classification Intelligent networks computer science software Feature extraction Artificial intelligence Infrared detectors

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