检索结果-内蒙古大学图书馆

International Conference on Fuzzy Systems and Knowledge Discovery (FSKD)

作者： Tiezheng Nie Derong Shen Ge Yu Zhong Shi Key Laboratory of Medical Image Computing Ministry of Education Northeastern University Shenyang China College of Information Science and Engineering Northeastern University Shenyang China

The problem of extracting data from a Web page has been studied by many works. In this paper, we present a novel approach that extracts data records from Web pages based on techniques of XML encoding. Firstly, our approach formats a given Web data page into an XML document. Then instead of using DOM-based approaches, we make use of XML encoding model to transform the XML document into a linear sequence. Our algorithm identifies the data records of a Web page from the sequence, which avoids the complex matching between sub trees in DOM model. Moreover, we address the problem of repetitive subparts in records and propose an algorithm for data alignment. Experimental results show that our approach can extract data records accurately from web pages.

关键词： Data mining Encoding Web pages XML HTML Feature extraction Algorithm design and analysis

来源：评论

学校读者我要写书评

暂无评论

Protecting Location Privacy Using Cloaking Subgraphs on Road Network

Protecting Location Privacy Using Cloaking Subgraphs on Road...

引用

Web Information Systems and Applications Conference (WISA)

作者： Jiao Xue Xiangyu Liu Xiaochun Yang Bin Wang School of Information Science and Engineering Northeastern University Liaoning China Key Laboratory of Medical Image Computing Ministry of Education Northeastern University Liaoning China

Mobile users traveling over roads often issue KNN queries based on their current locations with their mobile terminals (e.g. where is the nearest gas station?). However, exact location information transmitted to an unsecure server will easily lead the mobile user to be tracked. Thus it is important to protect mobile users' location privacy while providing location-based services. People traveling over roads always follow a road network. We observe that two cloaking subgraph structures, which we name cloaking cycle and cloaking tree, can be used to protect mobile users' location privacy effectively in road network environment. Based on these two subgraph structures, we propose a novel location privacy preserving approach using cloaking cycle and forest, which can effectively protect mobile users' location privacy while efficiently providing exact location-based services.

关键词： Mobile communication Privacy Roads Servers Query processing Mobile computing Middleware

来源：评论

学校读者我要写书评

暂无评论

Image Encryption Algorithm Based on DNA Sequences for the Big Image

Image Encryption Algorithm Based on DNA Sequences for the Bi...

引用

International Conference on Multimedia Information Networking and Security (MINES)

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

With the fast development of Internet technology and information processing technology, the image is commonly transmitted via the Internet. People enjoy the convenience and shortcut, but people have to face to the obsession that the important image information in transmission is easily intercepted by unknown persons or hackers. In order to enhance the image information security, image encryption becomes an important research direction. An image encryption algorithm based on DNA sequences for the big image is presented in this paper. The main purpose of this algorithm is to reduce the big image encryption time. This algorithm is implemented by using the natural DNA sequences as main keys. The first part is the process of pixel scrambling. The original image is confused in the light of the scrambling sequence is generated by the DNA sequence. The second part is the process of pixel replacement. The pixel gray values of the new image and the one of the three encryption templates are generated by the other DNA sequence are XORed bit-by-bit in turn. The experimental result demonstrates that the image encryption algorithm is feasible and simple. Through performance analysis, this algorithm is robust against all kinds of attacks and owns higher security.

关键词： Encryption DNA Pixel Chaos Algorithm design and analysis Correlation

来源：评论

学校读者我要写书评

暂无评论

On using Tabu Search for RNA secondary structure prediction

International Journal of Digital Content Technology and its ...

引用

International Journal of Digital Content Technology and its Applications 2010年第9期4卷 252-262页

作者： Liu, Yongguo Hao, Jianrui School of Computer Science Engineering University of Electronic Science and Technology of China Chengdu 611731 China Key Laboratory of Intelligent Computing Information Processing of Ministry of Education Xiangtan University Xiangtan 411105 China

In this article, a novel approach is proposed to predict RNA secondary structure called RNA secondary structure prediction based on Tabu Search (RNATS). In the RNATS algorithm, two search models, intensification search and diversification search, are developed to exploit the local regions around the current solution and explore the unvisited solution space, respectively. Simulation experiments are conducted on eight RNA sequences to show that the proposed method is feasible and effective.

关键词： Tabu search

来源：评论

学校读者我要写书评

暂无评论

Theoretical predictions of wurtzite III-nitride nano-materials properties

引用

Physical Chemistry Chemical Physics 2010年第26期12卷 7203-7210页

作者： Guisbiers, Grégory Liu, Di Jiang, Qing Buchaillot, Lionel IEMN CNRS-UMR8520 Villeneuve d’Ascq 59652 Scientific City Avenue Henri Poincaré BP 60069 France Catholic University of Louvain (UCL) Institute of Mechanics Materials and Civil Engineering Louvain-la-Neuve 1348 2 Place Sainte Barbe Belgium Key Laboratory of Automobile Materials (Jilin University) Ministry of Education School of Materials Sciences and Engineering_Jilin University Changchun 130022 China

In this paper, top-down and bottom-up approaches are used to predict material properties of group III-nitride nanostructures. The first approach calculates the melting temperature, melting enthalpy, Debye temperature and energy bandgap of InN, GaN and AlN through classical thermodynamics. The second approach calculates the surface energies in the liquid and solid states of the considered nitrides materials through molecular dynamics. Moreover, the liquid and solid surface energies of the zinc-blende and wurtzite III-V materials are compared. Finally, the phase diagram of a ternary III-nitride nanomaterial, AlGaN, is presented and the variation of its energy bandgap with composition is predicted. © the Owner Societies.

关键词：

来源：评论

学校读者我要写书评

暂无评论

An Image Encryption Algorithm Based on DNA Self-Assembly Technology

An Image Encryption Algorithm Based on DNA Self-Assembly Tec...

引用

2010 IEEE International Conference on Intelligent computing and Intelligent Systems(2010 IEEE 智能计算与智能系统国际会议 ICIS 2010)

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

DNA self-assembly that is fast developed in the fields of DNA computing and nano technology has become the focus of scientific fields. DNA self-assembly is a method that uses the characteristics of base-pair to form polyhedron or super molecular structure. This is a complex progress from disordered to ***, from simple to complicated. This paper mainly introduces that the DNA self-assembly technology is applied into the image encryption. In this paper, we proposed a complete design scheme of DNA tiles that is suitable for the image encryption. The DNA tiles mainly include five types, namely DNA tiles of the plaintext, DNA tiles of the encryption, DNA tiles of the cipertext, DNA tiles of the key and DNA tiles of the decryption. Through a simulate example, the effect of the image encryption algorithm is shown.

关键词： image encryption DNA serf-assembly technology DNA tiles

来源：评论

学校读者我要写书评

暂无评论

The distributed maximum power point tracking method and application in the PV grid-connected generation

The distributed maximum power point tracking method and appl...

引用

International Conference on Intelligent System Design and engineering Application (ISDEA)

作者： Zhao, Tingting Ju, Zhenhe Wang, Hongjiang Wei, Xiaopeng Li, Xiaoxiao Shi, Zhang School of Management Dalian University of Technology Dalian China New Energy Center Shenyang Institute of Engineering Shenyang China Department of Information and Engineering Shenyang Institute of Engineering Shenyang China Key Laboratory of Advanced Design and Intelligent Computing Ministry of Education Dalian University Dalian China Department of Study Liaoning Solar Energy R and D Co. Ltd. Shenyang China Institute of Systems Engineering Northeastern University Shenyang China

ISBN: (纸本)9780769542126

In the system of the PV grid-connected generation, because of the dispersion of the PV panel, difference of the sun radiation condition and the shadow of a part of the PV panel, they will cause the serious loss of energy for the parallel PV panel. In order to overcoming energy loss and raise the efficiency of the PV system, a new maximum power point tracking method called distributed variable step duty ratio perturb method is put forward. The distributed MPPT method overcomes the shortcomings to generate electricity quantity to descend because of the dispersion of the PV panel. The variable step duty ratio perturbing method speed quickly and is more suitable for this kind of distributed generation system. The hardware adopts DC/DC electric circuit to regulate PWM duty ratio. The software adopts TMS320-2812. An example is given to show that this method is able to realize distributed MPPT. In addition, the calculation speed of the approach is quick, accuracy of the approach is better, and the system has a high stability. © 2010 IEEE.

关键词： Maximum power point trackers

来源：评论

学校读者我要写书评

暂无评论

The Worm Propagation Model with Pulse Quarantine Strategy

The Worm Propagation Model with Pulse Quarantine Strategy

引用

International Conference on Multimedia Information Networking and Security (MINES)

作者： Yu Yao Hao Guo Fu-xiang Gao Ge Yu Key Laboratory of Medical Image Computing (Northeastern University) Ministry of Education School of Information Science and Engineering Northeastern University Shenyang China School of Information Science and Engineering Northeastern University Shenyang China

In this paper, a worm propagation model with pulse quarantine strategy is proposed to control the spread of the worm. This model which combines both the pulse quarantine and the constant quarantine strategy not only describes the propagation of the worm well and but also makes the infections eradicated effectively. Here, we show that there exits a stable infection-free periodic solution of the system and its stability condition is obtained. Finally, the numerical and simulation results of the pulse quarantine strategy is given, which indicate that the infections will get eliminated and the pulse quarantine policy has a nice performance on the worm control.

关键词： Grippers Numerical models Mathematical model Hidden Markov models Stability analysis Computational modeling Intrusion detection

来源：评论

学校读者我要写书评

暂无评论

Notice of Retraction: Variability Analysis on the Parameters of Pulse Wave

Notice of Retraction: Variability Analysis on the Parameters...

引用

International Conference on Bioinformatics and Biomedical engineering (ICBBE)

作者： Lisheng Xu Ying Wang Cong Feng Yupeng Yao Yue Zhao Key Laboratory of Medical Image Computing Ministry of Education Northeastern University Shenyang Liaoning China Sino-Dutch Biomedical and Information Engineering School Northeastern University Shenyang Liaoning China

This article has been retracted by the publisher.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A Multi-stage Spectral Alignment Strategy for Unrestrictive PTM Peptide Identification

A Multi-stage Spectral Alignment Strategy for Unrestrictive ...

引用

IEEE Symposium on Bioinformatics and Bioengineering (BIBE)

作者： Changyong Yu Guoren Wang Yuhai Zhao Keming Mao School of Information Science and Engineering Northeastern University Shenyang China Key Laboratory of Medical Image Computing (NEU) Ministry of Education Shenyang China School of Information Science and Engineering Northeastern University Qinhuangdao China

Spectral alignment, which studies the matching of ion peaks between the investigated spectrum and theoretical spectrum of peptide in the peptide database, is a very useful topic in computational proteomics. So far, the efficient, accurate and practical spectral alignment algorithm is still urgently needed due to its important application in the PTM unrestrictive peptide identification. In this paper, a multi-stage spectral alignment algorithm called MS-SA is proposed with the following two features: (a) it provided four different levels of alignment aims according to the alignment quality which can be specified by users, (b) it provided the capability of analyzing the detail modification types and locations for spectrum with multiple PTM sites. Therefore, MS-SA is of high practicality and can be applied to different specific applications such as being a filter in the large-scale database searching, a tool for detail modification types and locations analysis in small-scale spectral alignment and so on. A large number of experiments on real MS/MS data have been done for testing the performance of MS-SA. Also, the results of MS-SA are compared with those of same type of algorithms such as SA and SPC. The results show that MS-SA possesses strong practicality and outperforms the SA and SPC algorithms on several aspects.

关键词： Peptides Genetic mutations Proteomics Sequences Biomedical engineering Spatial databases Filters Proteins Bioinformatics Information science

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：