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DNA sequence set design by improved genetic algorithm

Journal of Computational and Theoretical Nanoscience 2014年第3期11卷 739-743页

作者： Zhang, Qiang Zhao, Yuxia Wang, Bin Key Laboratory of Advanced Design and Intelligent Computing Dalian University Ministry of Education Dalian 116622 China

It has been proved that information encoding and processing in DNA is an important problem for biomolecular computing, including the encoding design problem. In recent years, there has been growing interest in the applications of DNA encoding theory in genetics and bioengineering, especially in the construction of synthetic DNA strands. In the paper, we use the improved genetic algorithm to design DNA sequences with combinational constraints including h-distance (H), hamming distance (HD) and GC-content. Furthermore, we improve the theoretical lower bounds of DNA encoding satisfying the above combinational constraints by using improved genetic algorithm, comparing our experimental results with the previous work. From the results, we can see that we succeed in obtaining more DNA sequences and give practical values satisfying h-distance, hamming distance (HD) and GC-content, and shorten the range of DNA encoding bounds. As far as we know, these results we obtain are the first time, and provide the direction for the future work such as the research of theoretical bounds of DNA encoding and algorithms Copyright © 2014 American Scientific Publishers.

关键词： Genetic algorithms

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An improved correlation method based on rotation invariant feature for automatic particle selection

An improved correlation method based on rotation invariant f...

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10th International Symposium on Bioinformatics Research and Applications, ISBRA 2014

作者： Chen, Yu Ren, Fei Wan, Xiaohua Wang, Xuan Zhang, Fa Key Lab. of Intelligent Information Processing and Advanced Computing Research Lab Institute of Computing Technology Chinese Academy of Sciences Beijing China University of Chinese Academy of Sciences Beijing Beijing China Yanshan University Yanshan China

ISBN: (纸本)9783319081700

Particle selection from cryo-electron microscopy (cryo-EM) images is very important for high-resolution reconstruction of macromolecular structure. However, the accuracy of existing selection methods are normally restricted to noise and low contrast of cryo-EM images. In this paper, we presented an improved correlation method based on rotation invariant features for automatic, fast particle selection. We first selected a preliminary particle set applying rotation invariant features, then filtered the preliminary particle set using correlation to reduce the interference of high noise background and improve the precision of correlation method. We used Divide and Conquer technique and cascade strategy to improve the recognition ability of features and reduce processing time. Experimental results on the benchmark of cryo-EM images show that our method can improve the accuracy of particle selection significantly. © 2014 Springer International Publishing Switzerland.

关键词： Correlation methods

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Obstacle Avoidance Path Planning of Space Manipulator Based on Improved Artificial Potential Field Method

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Journal of The Institution of Engineers (India): Series C 2014年第1期95卷 31-39页

作者： S. Liu Q. Zhang D. Zhou Key Laboratory of Advanced Design and Intelligent Computing (Dalian University) Ministry of Education Dalian People’s Republic of China

This paper proposes an approach about obstacle collision-free motion planning of space manipulator by utilizing a Configuration-Oriented Artificial Potential Field method in 3-D space environment. Firstly, the artificial potential field method, which is usually used in 2-D space, is extended to 3-D space. Secondly, improving the artificial potential field method enables to carry out obstacle avoidance planning for the configuration of entire space manipulator (including the end-effector and links). Finally, the approach is combined with the inverse kinematics calculation which is based on the Generalized Jacobian Matrix for planning a collision-free motion of space manipulator. At the end of the article, by simulating the method mentioned above, the validity of the proposed method is verified.

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The 5th International Conference on Biomedical Engineering and Biotechnology (ICBEB 2016) Abstracts

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BMC MEDICAL IMAGING 2016年第SUPPL 1期16卷 65-65页

作者： [Anonymous] Department of MRI Shandong Medical Imaging Research Institute Affiliated to Shandong University Jinan Shandong 250021 People’s Republic of China Department of Interventional Radiology Shandong Provincial Hospital Affiliated to Shandong University Jinan Shandong 250021 People’s Republic of China College of Information Science and Technology Engr. Research Center of Digitized Textile & Fashion Tech. for Ministry of Education Donghua University Shanghai 201620 China Intelligent multimedia information processing Lab College of Software Northeastern University Shenyang Liaoning Province 110004 China Institute of Biomedical and Health Engineering Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055 China School of Computer Science and Technology Nanjing Normal University Nanjing China Department of Electrical Engineering The City College of New York CUNY New York USA Jiangsu Key Laboratory of 3D Printing Equipment and Manufacturing Nanjing China School of Electronic Science and Engineering Nanjing University Nanjing Jiangsu 210046 China College of Engineering Nanyang Technological University Singapore 639798 Singapore School of Electronic Information Shanghai Dianji University Shanghai China School of Natural Sciences and Mathematics Shepherd University Shepherdstown WV 25443 USA Davis College of Agriculture Natural Resources and Design West Virginia University Morgantown WV 26505 USA State Key Laboratory of Millimeter Waves Southeast University Nanjing 210096 China Center of Medical Physics and Technology Hefei Institutes of Physical Science Chinese Academy of Sciences Hefei China College of Agricultural and Life Sciences University of Florida Gainesville FL 32611 USA Courant Institute of Mathematical Sciences New York University New York NY 10012 USA Translational Imaging Division & MRI Unit Columbia University and New York State Psychiatric Institute New York NY 10032 USA Guangxi Key Laboratory of Manufacturing System & Adv

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An improved collision detection algorithm based on OBB

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Computer Modelling and New Technologies 2014年第1期18卷 71-79页

作者： Man, Ranran Zhou, Dongsheng Zhang, Qiang Key Laboratory of Advanced Design and Intelligent Computing Dalian University Ministry of Education Dalian China

In this paper, we present an effective algorithm based on the Oriented Bounding Box (OBB). Particularly, the article focus on how to reduce the amount of the time that the intersection of bounding boxes are detected for increasing the efficiency of collision detection algorithm through the following three steps. Firstly, the detection time of bounding box intersection is decreased by a pre-treatment method. Secondly, we optimize the traversal approach of the bounding box tree and reduce the depth of the two fork tree under take into account the temporal and spatial correlation of motion of virtual environment. Then, we reduce the breadth of tree result from this algorithm compares the distance between the bounding boxes and traverse the node of distance that near the tree. At last, the validity of the algorithm is verified by programming simulations.

关键词： Virtual reality

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key technologies for adaptive change design of armored vehicle in response to complex environment

Key technologies for adaptive change design of armored vehic...

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2014 International Conference on Materials Science and Computational Engineering, ICMSCE 2014

作者： Miao, Wei Dong Li, Fei Zeng, Wei Zheng, Xiao Jun China North Vehicle Research Institute Beijing 100072 China School of Mechanical Engineering Dalian University of Technology Dalian 116024 China Key Laboratory of Advanced Design and Intelligent Computing Dalian University Ministry of Education Dalian 116622 China

ISBN: (纸本)9783038350996

Quickly recovering and securing the advanced vehicle performance by changing structures, upgrading equipment become a key point to win the modern war. The armored vehicle is a complicated coupling system and the structure components are closely connected. Thus the change design is a complicated coupling system design problem. We provide the-state-of-art of the change design in response to environmental changes, and discuss the key technologies of armored vehicle adaptive change design responding to complex environment (AVACDCE). We also discuss design strategies and principles, change design decision and environmental adaptability evaluation, structural conflict elimination, performance optimization and layout optimization design in the limited space, and interface and assembly. In additional, we provide the design flow of the AVACDCE. Our studies can provide support for the armored vehicle adaptive change design responding to the complicated environment. © (2014) Trans Tech Publications, Switzerland.

关键词： Military vehicles

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An ant colony algorithm with memory grouping list for multi-depot vehicle routing problem

An ant colony algorithm with memory grouping list for multi-...

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2014 International Conference on Materials Science and Computational Engineering, ICMSCE 2014

作者： Zeng, Wei He, Yong Le Zheng, Xiao Jun China North Vehicle Research Institute Beijing 100072 China School of Mechanical Engineering Dalian University of Technology Dalian 116024 China Key Laboratory of Advanced Design and Intelligent Computing Dalian University Ministry of Education Dalian 116622 China

ISBN: (纸本)9783038350996

Multi-depot vehicle routing problem (MDVRP for short) is complex and a typical NP-Hard problem in manufactories, especially in assembly plant. We herein present an ant colony algorithm with memory grouping list (ACMGL for short) to solve this problem. To handle affiliation between clients and depots, we present certain point grouping (CP Grouping) and uncertain point grouping (UP Grouping) and obtain variable grouping purposes, make a grouping memory list for each depot store the optimal value and path of uncertain grouping after UP grouping, and thus improve the efficiency of the operation. Experimental results verified our algorithm in the computational efficiency. © (2014) Trans Tech Publications, Switzerland.

关键词： Computational efficiency

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A novel and fast chaotic cryptosystem for image encryption

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Journal of Computational and Theoretical Nanoscience 2014年第3期11卷 731-738页

作者： Wang, Bin Wei, Xiaopeng Zhang, Qiang School of Mechanical and Engineering Dalian University of Technology Dalian 116024 China Key Laboratory of Advanced Design and Intelligent Computing Dalian University Ministry of Education Dalian 116622 China

In recent years, there has been growing interesting in image encryption based on chaotic systems. In order to improve the effect of encryption, a large amount of operations are implemented in the most chaos-based cryptosystems. However, the runtime of chaos-based cryptosystems would be increased with the rise of operations. In this paper, a novel algorithm is proposed to generate cipher key for the permutation-diffusion architecture. The cipher key not only relates to the plain-image, but also the generated time of cipher key is shorter than the conventional method. On the premise of security, a novel and fast permutation-diffusion architecture based on chaotic systems and variable control conditions is proposed. For the sake of increasing the key space and enhancing the security of proposed architecture, variable control conditions used in this cryptosystem as the parameter and initial value of same chaotic system are generated from the cipher key related to the plain-image. So the proposed algorithm can effectively resist the most attacks against permutation-diffusion architectures. Finally, theoretical analyses and numerical experimental results show that the proposed chaos-based cryptosystem possesses high security and sound time of image encryption, which is suitable for protecting the image information Copyright © 2014 American Scientific Publishers.

关键词： Chaotic systems

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Simulating an AGV scheduling in job workshop for optimal configuration

Simulating an AGV scheduling in job workshop for optimal con...

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2014 International Conference on Materials Science and Computational Engineering, ICMSCE 2014

作者： Wang, Jian Bin Hou, Lu Yang Li, Wei Zheng, Xiao Jun China North Vehicle Research Institute Beijing 100072 China School of Mechanical Engineering Dalian University of Technology Dalian 116024 China CMPC Bohai Dring Engineering Company Limited Tianjin 300457 China Key Laboratory of Advanced Design and Intelligent Computing Dalian University Ministry of Education Dalian 116622 China

ISBN: (纸本)9783038350996

We herein simulate the scheduling process of automatic guided vehicle (AGV for short) with Plant Simulation, and try to obtain an optimal configuration for meeting practical engineering requirement in one assembly plant. We defined the predetermined loading station, unloading station and walking path simulation, and obtain a specific simulation time. Then, we build AGV simulation model, import data, define procedures and run the simulation process. By running the model repeatedly, we obtained the cost time and utilization rate of AGVs in each group in the process, and compared the simulation time to obtain the appropriate number of AGVs. The machine utilization results verified our simulated AGV configuration. © (2014) Trans Tech Publications, Switzerland.

关键词： Automatic guided vehicles

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On the simulation of expressional animation based on facial MoCap

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Science China(Information Sciences) 2013年第10期56卷 265-276页

作者： FANG XiaoYong WEI XiaoPeng ZHANG Qiang ZHOU ChangJun Key Laboratory of Advanced Design and Intelligent Computing (Dalian University) Ministry of Education School of Management Dalian University of Technology

MoCap(motion capture)-based animation is a hot issue in computer animation research *** on the optical MoCap system,this paper proposes a novel cross-mapping based facial expression simulating *** overcome the problem of the false upper and lower jaw correlation derived from the facial global RBFbased cross-mapping method,we construct a functional partition based RBF cross-mapping *** model animating,enhanced markers are added and animated by our proposed skin motion *** addition,based on the enhanced markers,an improved RBF-based animating approach is raised to derive realistic facial *** more,a pre-computing algorithm is presented to reduce computational cost for real-time *** experiments proved that the method can not only map the MoCap data of one subject to diferent personalized faces but generate realistic facial animation.

关键词： facial animation cross-mapping functional partition motion mechanism RBF

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