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Advances in Intelligent Systems and Computing 2013年 212卷 445-452页

作者： Liu, Hui-lin Liu, Qing School of Computer Science and Engineering Anhui University and Technology Huainan 232001 China Jiangxi Application Engineering Vocational Institute Pingxiang 337042 China

ISBN: (纸本)9783642375019

This paper offers a synthesized approach of solving the shortage of the traditional similarity in ontology mapping. First, it selects high correlation concepts by Hirst-St-Onge semantic relativity algorithms, in order to reduce the complexity of the account. Then according to the characteristic of the ontology concept, we designs a synthesized method through calculating the respective similarity in name, attribute and instance of concepts, and works out weight by Sigmoid function. Experiment data indicates that it makes the better accuracy than the traditional methods. © Springer-Verlag Berlin Heidelberg 2013.

关键词： Semantics

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Research on illumination invariance colour index algorithm based on colour ratio

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computer Modelling and New Technologies 2014年第6期18卷 360-364页

作者： Cai, Fei Wang, Wenjun School of Computer Science and Technology Tianjin University Tianjin China Tianjin Key Laboratory of Cognitive Computing and Application Tianjin China School of Civil Engineering Shandong Jianzhu University Jinan China

Statistics of colour value of each pixel in the image are output in traditional colour histograms. Therefore, though the two same images photographed in different illuminations are consistent in colour content, they have different colour distributions in the histograms. To solve the problem, this paper introduces an illumination invariance colour index algorithm based on colour ratio. According to the colour constancy theory, although colour values of its pixels will be changed once the image is subject to illumination, colour ratios remain unchanged. Colour ratio refers to the ratio between two contiguous pixels. As per colour ratios, colour ratio image may be obtained, which depicts obvious boundaries or margins of the image content so that we statistics of colour ratio histogram can be obtained as an index mechanism to remove illumination effect. Verified by lots of tests, this method can extract useful colour characteristics and remove illumination effect, so that it can be practically used in effective computer recognition of objects in traffic videos.

关键词： Pixels

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Advanced motor monitoring and diagnostics

Advanced motor monitoring and diagnostics

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Annual Conference for Protective Relay Engineers

作者： Pero Ostojic Arijit Banerjee Dhaval Patel Wrichik Basu Shahid Ali Application Engineer GE Digital Energy Markham Ontario Canada Electrical Engineering and Computer Science MIT Cambridge MA USA Electrical Engineering and Computer Science NC State University Raleigh NC USA GE GI. Research Bangalore Karnataka India Engineer GE GI. Research Bangalore Karnataka India

Modern motor protection relays are capable of long term failure monitoring and diagnostics based on information collected by a powerful data acquisition system. This includes predicting life time of motors. This paper presents an advanced algorithm capable of performing such tasks. It is applicable to different types of rotating electric machines depending on their design. The components are: stator turn fault detection and rotor bar fault detection. Detection methods are based on calculating the cross coupled impedance and analyzing the current frequency signature of the motor. The presentation includes a theoretical background, simulated results and testing results performed on a particular physical model.

关键词： Voltage measurement Robustness Impedance measurement Impedance Monitoring Integrated circuits MATLAB

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A Cloaking-Based Approach to Protect Location Privacy in Location-Based Services

A Cloaking-Based Approach to Protect Location Privacy in Loc...

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第三十三届中国控制会议

作者： Zheng Jiangyu Tan Xiaobin Cliff Zou Niu Yukun Zhu Jin CAS Key Laboratory of Technology in Geo-spatial Information Processing and Application System University of Science and Technology of China Department of Automation University of Science and Technology of China Department of Electrical Engineering and Computer Science University of Central FloridaOrlandoFL 32816-2362

ISBN: (纸本)9781479947249

With the widespread use of mobile devices, the location-based service(LBS) applications become increasingly popular, which introduces the new security challenge to protect user's location privacy. On one hand, a user expects to report his own location as far as possible away from his real location to protect his location privacy. On the other hand, in order to obtain high quality of service(QoS), users are required to report their locations as accurate as possible. To achieve the dedicated tradeoff between privacy requirement and QoS requirement, we propose a novel approach based on cloaking technique. We also discuss the disadvantage of the traditional general system model and propose an improved model. The basic idea of our approach is to select a sub-area from the generated cloaking area as user's reported location. The sub-area may not contain a user's real location,which prevents an adversary from performing attack with side information. Specifically, by defining an objective function with a novel location privacy metric and a QoS metric, we are able to convert the privacy issue to an optimization problem. Then, location privacy metric and QoS metric are given. To reduce the complexity of the optimization, a heuristic algorithm is *** privacy-preserving analysis and comparison with related work [8], we demonstrate the effectiveness and efficiency of our approach.

关键词： Location-based Services,Location Privacy,k-anonymity,Cloaking Area

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Modified group decision algorithm for performance appraisal of indian premier league cricketers

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WSEAS Transactions on Information science and applications 2013年第10期10卷 325-333页

作者： Dey, Pabitra Kumar Ghosh, Dipendra Nath Mondal, Abhoy Chand Department of Computer Application Dr.B.C.Roy Engineering College Durgapur-06 India Department of Computer Science and Engineering Dr.B.C.Roy Engineering College Durgapur-06 India Department of Computer Science University of Burdwan Burdwan India

Multi Criteria Decision Making (MCDM) is a major technique in the field of performance appraisal. In time to time numerous MCDM procedures are proposed to solve multi criteria problems. The different methods may provide different results on the same problem, which is the major fault of MCDM. To overcome this our proposed technique namely as Modified Group Decision Analysis (MGDA) plays the vital role. Indian Premier League (IPL) T-20 cricket tournament dataset is to be considered for applying MGDA. The assessment of the players by using four different MCDM techniques considered as an input of group decision method and the output produces the rank of the players. The result shows that proposed model yields more realistic way to judge the players and resolve deficiency of MCDM process.

关键词： Decision making

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Warranty-aware page management for PCM-based embedded systems

Warranty-aware page management for PCM-based embedded system...

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IEEE International Conference on computer-Aided Design

作者： Sheng-Wei Cheng Yu-Fen Chang Yuan-Hao Chang Hsin-Wen Wei Wei-Kuan Shih Institute of Information Science Academia Sinica Taipei Taiwan Department of Computer Science and Information Engineering National Taiwan University Taipei Taiwan Department of Information System and Application National Tsing Hua University Taipei Taiwan Department of Electrical Engineering Tamkang University Taipei Taiwan

ISBN: (纸本)9781479962792

The thriving growth in mobile consumer electronics makes energy efficiency in the embedded system design an important and recurring theme. Phase Change Memory (PCM) has shown its potential in replacing DRAM as the main memory option due to its (65%) reduced energy requirements. However, when considering the usage of PCM main memory, its write endurance becomes a critical issue, and wear leveling design is a common approach to resolve this issue. Even though the wear leveling design should stress operation efficiency and overhead reduction, existing wear leveling strategies designed for PCM main memory are usually dedicated to prolonging the lifetime of PCM. In this paper, we propose the perspective that, instead of valuing PCM lifetime exploitation as the first priority, we should turn to satisfy the product warranty period. To this end, further enhancement of operation efficiency and reduction of management overhead could be achieved. We thus propose a warranty-aware page management design to enhance the operation efficiency for managing the endurance issue in PCM. To show the effectiveness of the proposed design, we collected real traces on fiasco. OC by running SPEC2006 benchmarks with different write intensity workloads. The experiment results showed that our design reduced the overhead to one third of that of the state-of-the-art designs while still providing the same level of performance.

关键词： Phase change materials Arrays Warranties Memory management Random access memory Radiation detectors

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Switching Memory: An Optoelectronic Resistive Switching Memory with Integrated Demodulating and Arithmetic Functions (Adv. Mater. 17/2015)

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Advanced Materials 2015年第17期27卷

作者： Hongwei Tan Gang Liu Xiaojian Zhu Huali Yang Bin Chen Xinxin Chen Jie Shang Wei D. Lu Yihong Wu Run‐Wei Li Key Laboratory of Magnetic Materials and Devices Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo 315201 PR China Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo 315201 PR China Department of Electrical Engineering and Computer Science University of Michigan Ann Arbor Michigan 48109 USA Information Storage Materials Laboratory Department of Electrical and Computer Engineering National University of Singapore 4 Engineering Drive 3 Singapore 117583 Singapore

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Automated Sunspot Detection Using Morphological Reconstruction and Adaptive Region Growing Techniques

Automated Sunspot Detection Using Morphological Reconstructi...

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第三十三届中国控制会议

作者： Lan Yu Linhua Deng Song Feng Department of Information Engineering Yunnan Land and Resources Vocational College National Astronomical Observatories/ Yunnan Astronomical Observatory Chinese Academy of Sciences Yunnan Key Laboratory of Computer Technology Application / Faculty of Information Engineering and Automation Kunming University of Science and Technology

ISBN: (纸本)9781479947249

Sunspots are dark areas with respect to their surrounding area because the temperature of sunspot areas is lower than the average temperature of the solar surface. It provides essential information for many aspects of solar physics. A sunspot is composed of umbra and penumbra. It is a prerequisite for studying solar physics and spatial atmosphere to accurately segment and extract sunspot structures. Consequently, we propose an automated detection technique for segmenting and extracting them. The detection procedure is composed of two steps:(1) segmenting and extracting sunspot umbra with morphological reconstruction;(2) detecting and segmenting sunspot penumbra with region growing. For evaluating the accuracy of the detection procedure,we used a high-resolution observation obtained by Solar Optical Telescope onboard Hinode, and other obtained with the Dutch Open Telescope to illustrate the performance. The results demonstrate that our proposed technique is significant effective and accurate, and is suitable for studying the sunspot evolution and their physical phenomena.

关键词： Automated detection,Sunspot umbrae,Sunspot penumbrae,Morphological reconstruction,Adaptive region growing

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Evaluating dataflow vulnerabilities of scientific workflow based on data dependency patterns

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Journal of Computational Information Systems 2013年第12期9卷 4861-4868页

作者： Fu, Xiaodong Liu, Li Feng, Yong Liu, Xiaoyan Zhang, Jing Yunnan Provincial Key Laboratory of Computer Technology Application Faculty of Information Engineering and Automation Kunming University of Science and Technology Kunming 650500 China

If potential contributors leading to system failure can be identified when a scientific workflow is modelled, a lot of system vulnerabilities may thus be revealed and improved. In this paper, we first use data dependency patterns to describe dataflow in a scientific workflow. Then, the state function that describes the causal relations leading to incorrect state of an output is presented. We use a series of fault tree symbols to illustrate the state functions. Thus, fault tree analysis method is used to identify critical elements and elements combinations that lead to the incorrect state of any output item and calculate the probability of the incorrect state based on the probabilities of the basic events in the analysed workflow. Finally, an importance measure is designed to prioritize the contributors of system failure. The feasibility and effectiveness of the proposed methods are proved by example and experiments. © 2013 by Binary Information Press.

关键词： Fault tree analysis

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SLA aware cost efficient virtual machines placement in cloud computing

SLA aware cost efficient virtual machines placement in cloud...

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IEEE International Conference on Performance, Computing and Communications (IPCCC)

作者： Jiangtao Zhang Zhixiang He Hejiao Huang Xuan Wang Chonglin Gu Lingmin Zhang School of Computer Science and Technology Harbin Institute of Technology Shenzhen Graduate School Shenzhen China Public Service Platform of Mobile Internet Application Security Industry Shenzhen China Shenzhen Key Laboratory of Internet of Information Collaboration Shenzhen China Shenzhen Applied Technology Engineering Laboratory for Internet Multimedia Application Shenzhen China

ISBN: (纸本)9781479975761

Servers and network contribute about 60% to the total cost of data center in cloud computing. How to efficiently place virtual machines so that the cost can be saved as much as possible, while guaranteeing the quality of service plays a critical role in enhancing the competitiveness of service cloud provider. Considering the heterogeneous servers and the random property of multiple resources requirements of virtual machines, the problem is formulated as a multi-objective nonlinear programming in this paper. Virtual machine cluster with higher traffic is made staying together. This reduces the communication delay while saving the inter-server bandwidth consumption, especially the relatively scarce higher level bandwidth, by exploiting the topology information of data center. At the same time, statistic multiplex and newly defined “similarity” techniques are leveraged to consolidate virtual machines. The violation of resource capacity is kept at any designated minimal probability. Thus the quality of service will not be deteriorated while saving servers and network cost. An offline and an online algorithms are proposed to address this problem. Experiments compared with several baseline algorithms show the validity of the new algorithms: more cost is cut down at less computation effort.

关键词： Bandwidth Servers Cloud computing Topology Multiplexing Correlation Clustering algorithms

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