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A collision detection algorithm based on improved quantum particle swarm optimization

WSEAS Transactions on Information Science and Applications 2014年第1期11卷 24-31页

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

In the field of virtual reality, Collision Detection Technology was widely developed for improving the performance of 3D Graphics. Following rapid growth of virtual objects with complex shapes, conventional methods perform harder to effectively detect the collision. Facing the problem, we presented a collision detection algorithm based on improved quantum particle swarm optimization. Firstly, we converted the collision detection problem into nonlinear constrained optimization problem. Secondly, we employed the Euclidean distance to evaluate whether there was collision between two objects. Then, we improved the quantum particle swarm optimization (QPSO) algorithm by (1) using quantum HΕgate and quantum rotation gate in changing quantum probability amplitude, (2) changing the mutation operator with Quantum Hadamard Gate and (3) modifying constant Inertia Weight to random inertia weight. In the end, the results of numerical simulation and analysis were provided to verify the validity of our algorithm.

关键词： Virtual reality

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Face recognition based on PCA and logistic regression analysis

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Optik 2014年第20期125卷 5916-5919页

作者： Changjun Zhou Lan Wang Qiang Zhang Xiaopeng Wei Key Laboratory of Advanced Design and Intelligent Computing (Dalian University) Ministry of Education Dalian 116622 China

Face recognition is an important research hotspot. More and more new methods have been proposed in recent years. In this paper, we propose a novel face recognition method which is based on PCA and logistic regression. PCA is one of the most important methods in pattern recognition. Therefore, in our method, PCA is used to extract feature and reduce the dimensions of process data. Afterwards, we present a novel classification algorithm and use logistic regression as the classifier for face recognition. The experimental results on two different face databases are presented to illustrate the efficacy of our proposed method.

关键词： PCA Logistic regression Linear regression Face recognition

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Construction and validation analysis of the transcriptional regulatory network based on the gibbs sampler strategy and cytoscape software

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Journal of Computational and Theoretical Nanoscience 2014年第2期11卷 504-510页

作者： Zhang, Qiang Zheng, Xuedong Zhou, Changjun Zhang, Qian Key Laboratory of Advanced Design and Intelligent Computing Dalian University Ministry of Education Dalian 116622 China

To reveal the inner control mechanism of organism is an important content in the research of bioinformatics. The proliferation of a variety of high-throughput biological data for the reconstruction of gene regulatory networks from genome scale may be provided. Because the single data source only can provide about regulation relationship one-sided information and contain noise, so a variety of biological data integration method is expected to be of high reliability control network. We use Gibbs sampling method to integrate the SGD in gene expression data with YEASTRACT in mutual regulation data to infer the transcription regulatory networks. Firstly, based on the sampling distribution method for the given transcription factor to identify their target gene set;then, combining the Outlier sum t-statistical tests calculate the polymerization evidence for given transcription factor regulation of their target gene;finally, we exploit the two step existing results identify transcription factor regulation module. The key is that we utilize the Cytoscape Software reconstructing the transcriptional regulatory networks, and the transcription regulation is found by the Gibbs sampling method, which are consistent with utilizing the Cytoscape Software reconstruct the transcriptional regulatory networks. It verifies the feasibility and accuracy of the Gibbs sampling method. At the same time, we analyze the characteristic of the biological networks. © 2014 American Scientific Publishers.

关键词： Transcription

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DNA sequence set design by improved genetic algorithm

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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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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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Study and application of DNA cellular automata self-assembly

Communications in Computer and Information Science

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Communications in Computer and Information Science 2014年 472卷 654-658页

作者： Zhou, Shihua Wang, Bin Zheng, Xuedong Zhou, Changjun Key Laboratory of Advanced Design and Intelligent Computing of Ministry of Education Dalian University DalianLiaoning116622 China

ISBN: (纸本)9783662450482

Because DNA self-assembly technique has its unique molecular function and control of nanomaterials synthesis, DNA computing model based on the self-assembly owns great prospects for development. At present, humans have been widely used image to record and express the objective world, and image also becomes a kind of extremely important multimedia information storage and transmission format. In order to enhance the security of image, people have started to use DNA self-assembly to study DNA cryptography-based image encryption. In this paper, design of image encryption-oriented DNA self-assembly is introduced. The paper gives the self-assembly definition of elementary XOR-DNA cellular automata and elementary T-shaped XOR-DNA cellular automata. Combined with the characteristics of image encryption, the design of image encryption self-assembly is given by the definition of elementary T-shaped DNA cellular automata. © Springer-Verlag Berlin Heidelberg 2014.

关键词： Cellular automata

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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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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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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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