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International Conference on Bio-Inspired computing: Theories and Applications, BICTA

作者： Xing Wang Qiang Zhang Key Laboratory of Advanced Design and Intelligent Computing Ministry of Education Dalian University Dalian China

DNA computing theories can be applied in cryptography and it is a very hopeful direction. Though still in primitive level, it applies in many fields and solved some hard problems successfully. The art of cryptography security is to make anybody can not read it by encoding message. This paper use a new way to show how cryptography works with DNA computing, it can transmit message securely and effectively. The RSA algorithm belongs to asymmetric key cryptography, it is used in this paper connecting with DNA computing technique to encrypt message.

关键词： DNA computing Cryptography Encoding Arithmetic Turing machines Chemicals Art Security Computational modeling Qualifications

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A multilevel image encryption algorithm based on chaos and DNA coding

A multilevel image encryption algorithm based on chaos and D...

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International Conference on Bio-Inspired computing: Theories and Applications, BICTA

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

Chaos has been attracted much attention in current research of image encryption. In this paper, we change the location of pixels and pixel values through the combination of chaos with DNA coding. First of all, we transform the digital image into DNA coding matrix based on DNA code rules. Secondly, we divided this matrix into four sub matrixes, and disorder these sub matrixes through logistic chaotic sequence. Then, we scramble the sub matrixes by adding new logistic chaotic sequences and get the new sub matrixes. Finally, we join all scrambled DNA sub-matrixes in a DNA sequence and decode the scramble DNA matrix to image matrix. The experiment results demonstrate that the proposed scheme is effective, and it has wide secret key space, strong sensibility, high security and good ability of resisting statistic attack.

关键词： Cryptography Chaos DNA Image coding Sequences Logistics Digital images Decoding Security Statistics

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On the lower bounds of DNA word sets for DNA computing

On the lower bounds of DNA word sets for DNA computing

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International Conference on Bio-Inspired computing: Theories and Applications, BICTA

作者： Bin Wang Qiang Zhang Xiaopeng Wei Key Laboratory of Advanced Design and Intelligent Computing Ministry of Education Dalian University Dalian China

DNA computing is a new research field, which has been paid attention to by more and more experts with the DNA computing bringing the flying development of mathematics, computer science and other subjects. Because the DNA coding could decrease the emergence of false negative and false positive, it affects the reliability and the accuracy of DNA computing. In the DNA coding, DNA word sets could provide the best and effective DNA sequences which are used in DNA computing to improve the reliability and accuracy of biochemical reaction. However, there are no entire and exact values which satisfy combinational constraints, which induce many problems in DNA coding. For this reason, in this paper, we use the dynamic genetic algorithm to improve lower bounds of DNA word sets which satisfy combinational constraints. By comparing our experimental results with previous researchful work, the results improve the lower bounds and further shorten the value range of DNA word sets.

关键词： DNA computing Sequences Biology computing Biological information theory Computer science Mathematics Genetic algorithms design methodology Thermodynamics Computer science education

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An image encryption algorithm based on DNA sequence addition operation

An image encryption algorithm based on DNA sequence addition...

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International Conference on Bio-Inspired computing: Theories and Applications, BICTA

作者： Qiang Zhang Ling Guo Xianglian Xue Xiaopeng Wei Key Laboratory of Advanced Design and Intelligent Computing Ministry of Education Dahan University of Technology Dahan China

A new image encryption algorithm based on DNA sequence addition operation is presented. First, a DNA sequence matrix is obtained by encoding the original image. Second, divide the DNA sequence matrix into some equal blocks and use DNA sequence addition operation to add these blocks. Thirdly, carry out DNA sequence complement operation for the result of added matrix by using two Logistic maps. At last, decoding the DNA sequence matrix from the third step, we will get the encrypted image. The simulation experimental results and security analysis show that our algorithm not only can get good encryption effect, but also can resist exhaustive attack, statistical attack and differential attack.

关键词： Cryptography DNA Sequences Image coding Logistics Decoding Analytical models Security Algorithm design and analysis Resists

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An image scrambling method based on chaos in low intensity laser-DNAmolecule systems

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ICIC Express Letters 2009年第3期3卷 645-650页

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

Digital image scrambling is one of the most important methods of imageinformation hiding and camouflage. A new digital image scrambling algorithmbased on chaos in low intensity laser-DNA molecule systems is presented in thispaper for image encryption. Firstly, the chaotic sequence is generated by lowintensity laser-DNA molecule system,. Not only is the generated, chaoticsequence extremely sensitive for initial value, ergodic and aperiodic, but alsoit has higher security than the one generated by Logistic Mapping. Based, on thechaotic sequence(s), the image is confused by all pixels encryption and theimage ranks com, pound, encryption. Simulation experimental result shows thatthis method has good scrambling performance, security and robustness. ICIC International © 2009.

关键词： Cryptography

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Speech emotion recognition using PCA-based spectral features and HMM

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Journal of Information and Computational Science 2009年第2期6卷 741-747页

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

In recent years, speech emotion recognition has attracted more and more attention. In this paper, using PCA-based spectral features of the speech signal and HMM, we present a new framework for the text independent recognition of emotions from voice. Contrary to the traditional feature extraction method based on principal components analysis(PCA), the proposed PCA-based spectral features are computed on each set of data belonging to different emotion, rather than on the whole training set, moreover, each emotion subspace is constructed with the eigenvectors corresponding to the smaller eigenvalues rather than the bigger eigenvalues. Then, the proposed features are used to train HMM for realizing the speech emotion recognition. For finding the effectiveness of these features in recognition of different emotions in different languages, two different data-sets are used to evaluate the proposed method: the Danish emotional speech database and the Chinese emotional speech database. For the Danish database, it was shown that higher classification rate can be achieved on the new feature vectors extracted by proposed method. The proposed features, traditional PCA-based spectral features and original spectral features yielded close classification performance for the Chinese database. Copyright ©2009 Binary Information Press.

关键词： Principal component analysis

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Terrain Visualization and Application Based on 3D GIS

Terrain Visualization and Application Based on 3D GIS

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International Conference on Information Science and Engineering (ICISE)

作者： Hailiang Jin Huijie Liu Key Laboratory of Mine Spatial Information Technologies of State Bureau of Surveying and Mapping Henan Polytechnic University Jiaozuo China Key Laboratory of Advanced Design and Intelligent Computing Dalian University Dalian China

ISBN: (纸本)9781424449095

GIS has the function of powerful spatial data process and 3D visualization analysis. In this paper, by using available remote sensing image, DEM data for experiment, we realize 3D terrain visualization and terrain analysis, the technology of how to display huge volume of digital elevation model(DEM)data is introduced, and spatial analysis is studied based on the terrain created using DEM. In the end, the paper introduces the process of the implementation in brief.

关键词： Geographic Information Systems Space technology Data visualization Data structures Image analysis Information analysis Remote sensing Digital elevation models Laboratories Terrain mapping

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Research on visualization techniques in data mining

Research on visualization techniques in data mining

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International Conference on Computational Intelligence and Software Engineering (CiSE)

Visual data mining can help in dealing with the flood of information. The advantage of visual data exploration is that the user is directly involved in the data mining process, through analysis the results of the information visualization, user can integrate the specialist knowledge with the data mining algorithm. This paper summarizes current visualization methods applied in data mining. Current applications about visual data mining technique are analyzed combining with some national advanced data mining tools. Trends are clarified based on the task and object of visual data mining.

关键词： Data visualization Data mining Laboratories Humans Graphics Displays Algorithm design and analysis Information technology Data analysis Cognition

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基于改进的BPSO算法的产品优化配置模型研究

基于改进的BPSO算法的产品优化配置模型研究

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第六届智能CAD与数字娱乐学术会议

作者： Jiang Tingting 姜婷婷 Zhang Qiang 张强 Zhou Changjun 周昌军 Wei Xiaopeng 魏小鹏 Key Laboratory of Advanced Design and Intelligent Computing Dalian UniversityMinistry of Education 先进设计与智能计算省部共建教育部重点实验室大连大学大连116622

本文从客户和生产商两个角度出发，以性能和成本两个因素作为考察对象，建立了单位成本上，客户需求与模块实例相关度最大的优化配置模型。通过改进的BPSO算法，进行优化求解。最后通过实例证明本模型与算法的可行性。

关键词：粒子群优化算法产品优化配置数学模型模块化

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两种抗几何攻击数字图像水印算法分析比较

两种抗几何攻击数字图像水印算法分析比较

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第六届智能CAD与数字娱乐学术会议

作者： Chen Chen 陈晨 Zhang Qiang 张强 Zhou Changjun 周昌军 Wei Xiaopeng 魏小鹏 Key Laboratory of Advanced Design and Intelligent Computing(Dalian University) Ministry of Educatio 大连大学先进设计与智能计算省部共建教育部重点实验室辽宁大连 116622

本文以图像归一化和不变质心理论为基础提出了两种安全性较高的数字图像水印算法。为了增加水印的隐秘性及抗干扰能力，水印在嵌入前均进行了置乱和混沌加密处理，然后两种方案分别根据其归一化图像的不变质心确定出相应的重要区域，并... 详细信息

本文以图像归一化和不变质心理论为基础提出了两种安全性较高的数字图像水印算法。为了增加水印的隐秘性及抗干扰能力，水印在嵌入前均进行了置乱和混沌加密处理，然后两种方案分别根据其归一化图像的不变质心确定出相应的重要区域，并在该区域实施水印的嵌入。实验结果表明，本文提出的两种数字图像水印算法均具有较好的不可感知性和抗攻击的鲁棒性，特别是在抵抗常规信号处理和几何攻击下又各具优势。

关键词：数字水印算法分析图像归一化不变质心几何攻击

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