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International Conference on Concrete Pavement Design, Construction and Rehabilitation 2011

作者： Jiang, Ying-Jun Wang, Ting-Ting Chi, Feng-Xia Jin, Xiao-Ping Key Laboratory for Special Area Highway Engineering of Ministry of Education Chang'an University Xi'an 710064 China Zhejiang Scientific Research Institute of Communication Hangzhou Zhejiang 310006 China

ISBN: (纸本)9780984065882

Orthogonal test is used to study the influence laws to physical and mechanical properties of steel fiber reinforced concrete, which is caused by the four elements such as water cement ratio, early strength agent content, steel fiber content and mineral aggregate gradation. The results showed that the most significant influential element on concrete workability is mineral aggregate gradation, then the water cement ratio. Flexural strength is increased when adding steel fiber content - thus being the most influential element of steel fiber reinforced concrete [flexural strength]. Compressive strength is inversely proportional to water cement ratio, which is the most Influential element of steel fiber reinforced concrete [compressive strength]. The optimum steel fiber reinforced concrete mix proportion is obtained by orthogonal test: standard gradation, water cement ratio: 0.38, early strength agent content: 1%, steel fiber content: 50kg/m3. 3d and 28d's flexural strength of this mix proportion is separately increased by 10% and 12%. Wear Resistance is increased by 44.6%, compared to common cement concrete mix proportion. Research achievement can be applied to rapid repair construction of cement concrete pavement.

关键词： Cements

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Modeling for MIMO wireless channels in mine tunnels

Modeling for MIMO wireless channels in mine tunnels

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2011 International Conference on Electric Information and Control engineering, ICEICE 2011

作者： Yao, Shan-Hua Wu, Xian-Liang School of Electric and Information Engineering Anhui University of Science and Technology Huainan China Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education Anhui University Hefei China

ISBN: (纸本)9781424480395

The electromagnetic waves propagation situation is very complex in mine tunnels, so it is important to establish an efficient MIMO channel model for applying wireless communication technology to coal mine underground. A stochastic MIMO channel model is proposed firstly based on wireless propagation environment in mine tunnels, and then two spatial correlative channel models are established through correcting channel matrices based on abundant scatter environment. In this paper, the singular values and the channel capacity obtained with a Rayleigh channel model are compared, and system performance of different channel models are simulated. The simulation results indicate that established channel models are feasible by comparing with measurements results to mine tunnels. © 2011 IEEE.

关键词： MIMO systems

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Fast adaptive interpolation filter algorithm for bi-predicted frame in video coding

Fast adaptive interpolation filter algorithm for bi-predicte...

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2nd International Conference on Multimedia Technology, ICMT 2011

作者： Gao, Huichao Cen, Feng Xu, Weisheng Key Laboratory of Embedded System and Service Computing Ministry of Education Tongji University Shanghai 20092 China College of Electronics and Information Engineering Tongji University Shanghai 20092 China

ISBN: (纸本)9781612847740

This paper proposes a novel adaptive interpolation filter (AIF) to reduce computational complexity and bit-rate of video coding. In the proposed AIF, the filter coefficients of B frames, which are predicted from those of adjacent P frames with a novel parabolic model, are unnecessary to transmit. Experimental results show that the coding complexity is reduced by 40.22% with no penalty on coding efficiency and 1.59% bitrate reduction is achieved at low bit-rate against conventional AIF. © 2011 IEEE.

关键词： Image coding

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Multivariate Public-key Encryption Scheme Based on Error Correcting Codes

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China Communications 2011年第4期8卷 23-31页

作者：王后珍沈昌祥徐正全张焕国 Key Laboratory of Aerospace Information Security and Trusted Computing Ministry of EducationSchool of ComputerWuhan University State key Laboratory for Information Engineering in Surveying Mapping and Remote SensingWuhan University

Advances in quantum computers pose potential threats to the currently used public-key cryptographic algorithms such as RSA and *** a promising candidate against attackers equipped with quantum computational power,Multivariate Public-key Cryptosystems(MPKCs)has attracted increasing attention in recently ***,the existing MPKCs can only be used as multivariate signature schemes,and the way to construct an efficient MPKC enabling secure encryption remains *** employing the basic MQ-trapdoors,this paper proposes a novel multivariate encryption scheme by combining MPKCs and code-based public-key encryption *** new construction gives a positive response to the challenges in multivariate public key *** analysis shows that our scheme is secure and efficient,and its private key size is about 10 times smaller than that of McEliece-type cryptosystems.

关键词： cryptography multivariate public key cryptosystems Goppa codes

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Minimum spanning tree fusing uniform sub-sampling points and high-dimensional features for medical image registration

Minimum spanning tree fusing uniform sub-sampling points and...

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International Conference on Bioinformatics and Biomedical engineering

作者： Zhang, Shao-Min Zhi, Li-Jia Zhao, Da-Zhe Zhao, Hong College of Information Science and Engineering Northeastern University Shenyang Liaoning 110004 China Key Laboratory of Medical Image Computing Northeastern University Ministry of Education Shenyang Liaoning 110004 China

ISBN: (纸本)9781424450893

In this paper, we propose a novel registration algorithm based on minimal spanning tree. First, we extracted uniform sub-sampling points from image. Second, based on the feature points, in addition to using pixel intensity, we also added region based feature to include more spatial information. The proposed method is evaluated by performing registration experiments on BrainWeb database. The experimental results show that the proposed method achieves better robustness while maintaining good registration accuracy, compared to the conventional normalized mutual information (NMI) based registration method. © 2011 IEEE.

关键词： Image registration

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Quantized robust H-two filtering for Markovian jump linear systems over networks with nonaccessible mode information

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控制理论与应用（英文版） 2011年第4期9卷 505-512页

作者： Tao LIU Qijun CHEN Hao ZHANG Iko MIYAZAWA Department of Electronics and Information Engineering Tongji University Shanghai 201804 China Key Laboratory of Embedded System and Service Computing Tongji University Ministry of Education Shanghai 201804 China Department of Machine Control Technology Kanagawa Industrial Technology Center Kanagawa 243-0435 Japan

This paper is concerned with the problems of H-two filtering for discrete-time Markovian jump linear systems subject to logarithmic quantization. We assume that only the output of the system is available, and therefore the mode information is nonaccessible. In this paper, a mode-independent quantized H-two filter is designed such that filter error system is stochastically stable. To this end, sufficient conditions for the existence of an upper bound of H-two norm are presented in terms of linear matrix inequalities. Considering uncertainty of system matrices, a robust H-two filter is designed. The proposed method is also applicable to cover the case where the transition probability matrix is not exactly known but belongs to a given polytope. Finally, numerical examples are provided to demonstrate the effectiveness of the proposed approach.

关键词： Markovian jump linear systems Quantized robust H-two filter Mode independent Sector bound approach Linear matrix inequalities

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Hydropower-based research on training mode of civil engineering

Hydropower-based research on training mode of civil engineer...

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2011 International Conference on engineering education and Management, ICEEM2011

作者： Wang, Ruihong Li, Jianlin Jiang, Yuzhou Wang, Yu China Three Gorges University Key Laboratory of Geological Hazards on Three Gorges Reservoir Area Ministry of Education Yichang Hubei 443002 China Key Laboratory of Geotechnical Mechanics and Engineering Ministry of Water Resources Yangtze River Scientific Research Institute Wuhan Hubei 430010 China

ISBN: (纸本)9783642248221

With training of the actual work ability of our civil engineering students as the starting point, our institute works at making full use of the local resource superiority and highlighting the hydropower characteristics on behalf of improving the comprehensive competitiveness of students in employment. The "high-quality, high capacity, applied" talents are constructed to serve the local education and scientific enterprise. The research focusing on the exploration and practice of the school running features provides a certain reference to other similar institutes. © 2012 Springer-Verlag.

关键词： Hydroelectric power

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A remote debugging system for OpenMP parallel program

A remote debugging system for OpenMP parallel program

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2011 International Conference on Transportation, Mechanical, and Electrical engineering, TMEE 2011

作者： Chai, Hua Shi, Qinqin Key Laboratory of Embedded System and Service Computing Ministry of Education Tongji University Shanghai 200092 China Department of Computer Science and Information Engineering Shanghai Institute of Technology Shanghai 201418 China

ISBN: (纸本)9781457717017

A remote debugging system for OpenMP parallel program is presented in this paper. The system consists of two parts, namely, an integrated debugging environment running on the clent-side and a background daemon running on the server-side. Information exchange between the two sides is accomplished through the socket-based network communication technology. The remote debugging function is realized by the automatic instrumentation technology at code level based on syntax tree. Instance tests show that the system can provide remote users with correctness checking, performance analysis and other debugging functions for OpenMP parallel programs. The user interface is simple and very easy to use. © 2011 IEEE.

关键词： User interfaces

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Multi-objective Optimization Conceptual Design of Product Structure Based on Variable Length Gene Expression

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Chinese Journal of Mechanical engineering 2011年第1期24卷 42-49页

作者： WEI Xiaopeng ZHAO Tingting JU Zhenhe ZHANG Shi LI Xiaoxiao School of Management Dalian University of Technology Dalian 116023 China Key Laboratory of Advanced Design and Intelligent Computing of Ministry of Education Dalian University Dalian 116622 China New Energy Center Shenyang Institute of Engineering Shenyang 110136 China Liaoning Solar Energy R＆D Co. Ltd. Shenyang 110136 China Institute of Systems Engineering Northeastern University Shenyang 110004 China

It is a complicated problem for the bottom-to-top adaptive conceptual design of complicated products between structure and function. Reliable theories demand to be found in order to determine whether the structure accords with the requirement of design. For the requirement generally is dynamic variety as time passes, new requirements will come, and some initial requirements can no longer be used. The number of product requirements, the gene length expressing requirements, the structure of the product, and the correlation matrix are varied with individuation of customer requirements of the product. By researching on the calculation mechanisms of dynamic variety, the approaches of gene expression and variable length gene expression are proposed. According to the diversity of structure selection in conceptual design and mutual relations between structure and function as well as structure and structure, the correlation matrixes between structure and function as well as structure and structure are defined. By the approach of making the sum of the elements of correlation matrix maximum, the mathematical models of multi-object optimization for structure design are provided based on variable requirements. An improved genetic algorithm called segment genetic algorithm is proposed based on optimization preservation simple genetic algorithm. The models of multi-object optimization are calculated by the segment genetic algorithm and hybrid genetic algorithm. An example for the conceptual design of a washing machine is given to show that the proposed method is able to realize the optimization structure design fitting for variable requirements. In addition, the proposed approach can provide good Pareto optimization solutions, and the individuation customer requirements for structures of products are able to be resolved effectively.

关键词： gene expression multi-object optimization conceptual design genetic algorithm

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Strong security enabled certificateless aggregate signatures applicable to mobile computation

Strong security enabled certificateless aggregate signatures...

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3rd IEEE International Conference on Intelligent Networking and CollaborativeSystems, INCoS 2011

作者： Hu, Xiong Wu, Qianhong Chen, Zhong Key Laboratory of Network and Software Security Assurance of the Ministry of Education School of Electronics Engineering and Computer Science Peking University Beijing 100871 China Key Laboratory of Aerospace Information Security and Trusted Computing Wuhan University Ministry of Education China Universitat Rovira i Virgili Department of Computer Engineering and Mathematics UNESCO Av. Països Catalans 26 E-43007 Tarragona Spain

ISBN: (纸本)9780769545790

An aggregate signature scheme allows a public algorithm to aggregate n signatures of n distinct messages from n signers into a single signature. By validating the single resulting signature, one can be convinced that the messages have been endorsed by all the signers. Certificateless aggregate signatures allow the signers to authenticate messages without suffering from the complex certificate management in the traditional public key cryptography or the key escrow problem in identitybased cryptography. In this paper, we present a new efficient certificateless aggregate signature scheme. Compared with up-todate certificateless aggregate signatures, our scheme is equipped with a number of attracting features: (1) it is shown to be secure under the standard computational Diffie-Hellman assumption in the random oracle model;(2) the security is proven in the strongest security model so far;(3) the signers do not need to be synchronized;and (4) its performance is comparable to the most efficient up-to-date schemes. These features are desirable in a mobile networking and computing environment where the storage/computation capacity of the end devices are limited, and due to the wireless connection and distributed feature, the computing devices are easy to be attacked and hard to be synchronized. © 2011 IEEE.

关键词： Public key cryptography

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