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IEEE Workshop on Multimedia Signal processing

作者： Shiliang Zhang Qi Tian Qingming Huang Wen Gao Key Laboratory of Intelli. Information Process. Institute of Comput. Technology Chinese Academy of Sciences (CAS) Beijing China Department of Computer Science University of Texas San Antonio TX USA Graduate University of Chinese Academy of Sciences Beijing China Peking University Beijing China

Automatic image annotation assigns semantic labels to images thus presents great potential to achieve semantic-aware image retrieval. However, existing annotation algorithms are not scalable to this emerging need, both in terms of computational efficiency and the number of tags they can deal with. Facilitated by recent development of the large-scale image category recognition data such as ImageNet, we extrapolate from it a model for scalable image annotation and semantic-aware image retrieval, namely ObjectBook. The element in the ObjectBook, which is called an ObjectWord, is defined as a collection of discriminative image patches annotated with the corresponding objects. We take ObjectBook as a high-level semantic preserving visual vocabulary, and hence are able to easily develop efficient image annotation and inverted file indexing strategies for large-scale image collections. The proposed retrieval strategy is compared with state-of-the-art algorithms. Experimental results manifest that the ObjectBook is both discriminative and scalable for large-scale semantic-aware image retrieval.

关键词： Image retrieval Visualization Semantics Vocabulary Algorithm design and analysis Indexing Clustering algorithms

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H_∞ consensus control of a class of second-order multi-agent systems without relative velocity measurement

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Chinese Physics B 2010年第7期19卷 188-192页

作者：张文广曾德良郭振凯 Beijing Key Laboratory of Measurement and Control New Technology and System for Industrial Process Control & Computer Engineering SchoolNorth China Electric Power University School of Mathematics and Information Ludong University

This paper studies consensus control problems for a class of second-order multi-agent systems without relative velocity measurement. Some dynamic neighbour-based rules are adopted for the agents in the presence of external disturbances. A sufficient condition is derived to make all agents achieve consensus while satisfying desired H∞ performance. Finally, numerical simulations are provided to show the effectiveness of our theoretical results.

关键词： consensus control H∞ second-order multi-agent systems

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Case-based safety assessment of thermal power plants: A framework

Case-based safety assessment of thermal power plants: A fram...

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International Conference on Business Management and Electronic information (BMEI)

作者： Changyong Liang Dongxiao Gu Isabelle Bichindaritz Chunrong Zuo Fei Cheng School of Management Hefei University of Technology Hefei Anhui China Research Center of Intelligent Decision Making and Information System Technologies Ministry of Education of China Hefei Anhui China Department of Computer Science University of Illinois Chicago Chicago IL USA Key Laboratory of Process Optimization and Intelligent Decision-making Ministry of Education of China Hefei Anhui China Institute of Technology University of Washington Tacoma WA USA

Security assessment of Thermal Power Plants (TPPs) is one of the important means to guarantee the safety of production in thermal power production enterprises. Essentially, the evaluation of power plant systems relies to a large extent on the knowledge and length of experience of the experts. Therefore in this domain Case-Based Reasoning (CBR) is introduced for the security assessment of TPPs since this methodology models expertise through experience management. Taking the management system of TPPs as breakthrough point, this paper presents a case-based approach for the security assessment decision support of TPPs (SATPP). First, this paper reviews commonly used approaches for TPPs security assessment and the current general evaluation process of TPPs security assessment. Then a framework for the Management System Security Assessment of Thermal Power Plants (MSSATPP) is constructed and an Intelligent Decision Support System for MSSATPP (IDSS-MSSATPP) is functionally designed. MSSATPP involves several key technologies and methods such as knowledge representation and case matching.

关键词： Security Safety Production Power generation Power systems Decision making Indexes

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Four-state passive propagation model of malicious code in P2P networks

Jiefangjun Ligong Daxue Xuebao/Journal of PLA University of ...

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Jiefangjun Ligong Daxue Xuebao/Journal of PLA University of Science and technology (Natural Science Edition) 2011年第6期12卷 582-587页

作者： Xu, Xiao-Long Xiong, Jing-Yi Cheng, Chun-Ling Yang, Geng College of Computer Nanjing University of Posts and Telecommunications Nanjing 210003 China State Key Laboratory of Information Security Institute of Software Chinese Acad. of Sci. Beijing 100190 China Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks Nanjing 210003 China

The propagation and attack of malicious codes in Peer-to-Peer networks (P2P) is getting more and more serious. The propagation of malicious code was divide into two types, passive and active propagations, and then a novel four-state passive propagation (4SPP) model of malicious code in P2P networks proposed. The model divides peers into four types, including susceptible peers, exposed peers, infected peers and healed peers, based on situation of peers infected by malicious codes. The differential equations showing how the numbers of peers in the various states migrating over time were also provided. The experiment results about the parameters of the model and two initial values of the number of infected peer and the number of exposed peer in different situations were presented, and the basic passive propagation law of malicious code in P2P network was obtained.

关键词： Peer to peer networks

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Gas concentration detection using ultrasonic based on wireless sensor networks

Gas concentration detection using ultrasonic based on wirele...

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International Conference on information Science and Engineering

作者： Shan, Minglei Li, Xiang Zhu, Changping Zhang, Jiahua Department of Computer and Information Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology Hohai University Changzhou China

ISBN: (纸本)9781424480968

In this article, a low power consumption wireless sensor for binary gas mixtures real-time quantitative analysis is presented. This small size wireless gas sensor, which is developed based on an improved time-of-flight (TOF) method, can evaluate target gas in gas mixtures with high resolution. And the wireless sensor network system reduce power consumption using a power control IEEE802.15.4 standard, which can provide an effective mechanism for improving energy efficiency by decreasing the transmitting power directly. In contrast with some other gas analysis techniques, it avoids the problem of the secondary pollution and the short sensor life of using chemic sensor, and the high power consumption problem of traditional TOF methods, makes ultrasonic wireless gas sensor available. Currently, this gas quantitative analysis system consists of several Wireless Ultrasonic Gas Sensor nodes (WUGS) and a master node. The WUGS hardware consists of a microcontroller for obtaining measuring data from the ultrasonic channel, and a Zigbee transceiver for transmitting the data sets to a master sensor node. Furthermore, an environmental monitoring chamber was designed for testing this WUGS using sulfur hexafluoride (SF6) and hydrogen (H2) mixed with air respectively. The resolutions of the tests were within 30μV/V and 500μV/V, respectively. The power cost of the WUGS during the detection period is lower than 90mW. The main advantages of this gas concentration measurement are high accuracy to the gas of which molecular weight is different largely from air, low power consumption and ease of network setup. The sensors have shown good stability for more than three months in a high-voltage substation, for an SF6 leak alarm system test. © 2010 IEEE.

关键词： Sensor nodes

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Simulation on nanoimprint of grating structures

Simulation on nanoimprint of grating structures

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2010 International Conference on computer Application and System Modeling, ICCASM 2010

作者： Sun, Hongwen Liu, Guogao Lin, Shanming College of Computer and Information Engineering Hohai University Changzhou China Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology China

ISBN: (纸本)9781424472369

Nanoimprint lithography (NIL) is an important nanolithography process with low cost, high throughput and high resolution. It creates patterns by mechanical deformation of imprint resist. Fabricating gratings by NIL can manufacture lots of replica in a fast way. Simulation on the NIL process has a vital role on choosing optimized parameters. One finite element analysis software DEFORM was used to analyze different imprint factors. Through simulation optimization, it was found that imprint temperature, pressure and time strongly affected the replication fidelity. The simulation result will guide the NIL experiment. © 2010 IEEE.

关键词： Nanoimprint lithography

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Design of the wireless points-scoring system in sports competition based on PDA

Design of the wireless points-scoring system in sports compe...

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2nd International Conference on information Science and Engineering, ICISE2010

作者： Peng, Chen Chao, Fei Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology Changzhou China Department of Computer and Information Engineering Hohai University Changzhou China

ISBN: (纸本)9781424480968

This system mainly consists of the PDA control terminal which is responsible for collecting the result data, the PDA client terminal which is used for transmitting data and sending instructions to the PDA client terminal, web server which provides the accessibility of the website and storage of the database. The adoption of the OO technology is included in the design development of the system. The PDA client terminal is developed by C# language in the development environment of *** 2.0, while the PDA control terminal is developed by Delphi 2006. This essay analyzed and designed the system, giving the comparison of different pattern of the network transformation and the reason of choosing UDP as the communication mode to ensure the real-time of the system. In addition, the author summarized the problems occurred in the on-site application and put forward the solution of data submission by multi-customer. © 2010 IEEE.

关键词： Digital storage

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A key management scheme for multicast based on layer 2 control

A key management scheme for multicast based on layer 2 contr...

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10th IEEE International Conference on computer and information technology, CIT-2010, 7th IEEE International Conference on Embedded Software and Systems, ICESS-2010, 10th IEEE Int. Conf. Scalable Computing and Communications, ScalCom-2010

作者： Cao, Zheng Yin, Pengpeng Lu, Zhengjun School of Computer Science and Engineering Southeast University Nanjing 210096 China Key Laboratory of Computer Network Technology Jiangsu Province Nanjing 210096 China Key Laboratory of Computer Network and Information Integration Ministry of Education Nanjing 210096 China

ISBN: (纸本)9780769541082

This paper presents a key management scheme for multicast based on layer 2 control, which includes multicast authentication, secure multicast forwarding tree management, key distribution when users are initialized and periodical key updating. This scheme offers a set of methods for key distribution and updating with MLD snooping mechanism and MLD report filtering on access switches. This method reduces the complexity of the key updating problem when members leave the group by layer 2 control and guarantees the efficiency and security of key management. Compared with other schemes, this scheme performs better on computation cost and communication cost than them and has acceptable storage cost. © 2010 IEEE.

关键词： Multicasting

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Dual-band right-angled triangular resonator bandpass filter

Dual-band right-angled triangular resonator bandpass filter

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2010 IEEE 12th International Conference on Communication technology, ICCT'2010

作者： Xiao, J.-K. Zhu, W.-J. School of Computer and Information Hohai University Changzhou 213022 China Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology Changzhou 213022 China

ISBN: (纸本)9781424468690

Triangular patch resonators have important applications in microwave filters and antennas design. In this report, new isosceles right-angled triangular patch resonator bandpass filters with two-path coupling are developed to perform dual-passband, low passband insertion loss and miniaturization, and performances of the proposed filters are compared. New dual-band bandpass filter using single right-angled triangular patch resonator is also presented, and the experiment demonstrates the design. The new filters are some applications of right-angled triangular patch resonator, and are expected to find applications in future wireless communication systems. © 2010 IEEE.

关键词： Bandpass filters

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Novel SIR bandpass filter with compact coupling

Novel SIR bandpass filter with compact coupling

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IEEE International Conference on Ultra-Wideband

作者： Xiao, Jian-Kang Zhu, Yu-Feng College of Computer and Information Hohai University Changzhou 213022 China Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology Changzhou 213022 China

ISBN: (纸本)9781424453061

Dual-band and tri-band SIR bandpass filters with compact coupling and sizes reduction are proposed, and two paths coupling is introduced. In the new design, split ring SIR and DGS techniques are applied to not only reduce the size but also improve the filter frequency responses. The presented filters have advantages of compact and novel structures, smaller sizes compared to the traditional SIR bandpass filters, and nicer performances such as high selectivity, low passband insertion losses and so on, and all these can be quite useful in wireless communication systems. © 2010 IEEE.

关键词： Bandpass filters

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