检索结果-内蒙古大学图书馆

Optical Fabrication and Testing, OFT 2008

作者： Plum, E. Zhou, J. Dong, J. Fedotov, V.A. Koschny, T. Soukoulis, C.M. Zheludev, N.I. EPSRC Nanophotonics Portfolio Centre Optoelectronics Research Centre University of Southampton SO17 1BJ United Kingdom Institute of Optical Fiber Commun. and Network Tech Ningbo University Ningbo 315211 China Ames Laboratory Department of Physics and Astronomy Iowa State University Ames Iowa 50011 United States Department of Electrical and Computer Engineering Microelectronics Research Center Iowa State University Ames Iowa 50011 United States Department of Materials Science and Technology University of Crete Greece

We demonstrate that artificial chiral meta-material with electromagnetic coupling shows negative index of refraction linked to exceptionally strong circular birefringence. © 2008 Optical Society of America.

ISBN: (纸本)9781557528612

关键词： Refractive index

来源：评论

学校读者我要写书评

暂无评论

Group learning using contrast NMF: Application to functional and structural MRI of schizophrenia

Group learning using contrast NMF: Application to functional...

引用

2008 IEEE International Symposium on Circuits and Systems (ISCAS 2008), vol.4

作者： Vamsi K. Potluru Vince D. Calhoun MIND Research Network Department of Computer Science University of New Mexico Albuquerque NM USA MIND Research Network Department of Electrical & Computer Engineering University of New Mexico Albuquerque NM USA

Non-negative Matrix factorization (NMF) has increasingly been used as a tool in signal processing in the last couple of years. NMF, like independent component analysis (ICA) is useful for decomposing high dimensional data sets into a lower dimensional space. Here, we use NMF to learn the features of both structural and functional magnetic resonance imaging (sMRI/fMRI) data. NMF can be applied to perform group analysis of imaging data and we apply it to learn the spatial patterns which linearly covary among subjects for both sMRI and fMRI. We add an additional contrast term to NMF (called co-NMF) to identify features distinctive between two groups. We apply our approach to a dataset consisting of schizophrenia patients and healthy controls. The results from co-NMF make sense in light of expectations and are improved compared to the NMF results. Our method is general and may prove to be a useful tool for identifying differences between multiple groups.

关键词： Magnetic resonance imaging Independent component analysis Hydrogen Data analysis Image analysis Psychology Application software computer science computer networks Matrix decomposition

来源：评论

学校读者我要写书评

暂无评论

The Research of frame and key technologies for Intrusion Detection System in IEEE 802.11-based Wireless Mesh networks

The Research of frame and key technologies for Intrusion Det...

引用

2nd International Conference on Complex, Intelligent and Software Intensive Systems (CISIS 2008)

作者： Hongjian Li Ming Xu Yi Li Department of Network Engineering School of Computer Science National University of Defense Technology Changsha China Staff Room of Automatization Technology Logistics and Engineering University Chongqing China

The architecture and characteristic of Wireless Mesh networks (WMN), as well as the significance of Intrusion Detection System (IDS) in its application were investigated Based on the embedded analyzing of IDS technologies in Ad hoc network and WLAN (Wireless Local Area network), combined with the security requirements in WMN itself, it is concluded that both the architecture of distributed and cooperative IDS in Ad hoc network and distributed IDS in WLAN can not be applied directly in WMN. A new architecture of asymmetric distributed and cooperative IDS for WMN based on the application of agent was proposed in the paper. This new architecture of IDS in WMN was then simulated by the attack detection of IEEE 802.11 MAC selfish behavior in NS2, using the IDS selfish behavior attack detection model ground on the judgment mechanism of double mode, which was also brought forward. The result of the simulation shows that the given new architecture of asymmetric distributed and cooperative IDS and the IDS selfish behavior attack detection model fitted WMN well.

关键词： Wireless Mesh network Intrusion Detection System (IDS) Asymmetric distributed and cooperative Agent Selfish behavior

来源：评论

学校读者我要写书评

暂无评论

ROBOKID: Let Children Construct Their Own Emotional Kids - Learning by Construction

ROBOKID: Let Children Construct Their Own Emotional Kids - L...

引用

IEEE International Workshop on Digital Game and Intelligent Toy Enhanced Learning (DIGITEL)

作者： Gwo-Dong Chen Mu-Chun Su Eric Hsiao-kuang Wu Wu-Yuin Hwang Tzu-Chien Liu Eric Zhi-Feng Liu Siew-Rong Wu Department of Computer Science and Information Engineering National Central University Taiwan Graduate of Network Learning Technology National Central University Taiwan Graduate Institute of Learning and Instruction National Central University Taiwan Center for General Education National Yang-Ming University Taiwan

Bill Gates mentioned in Scientific America that robot will enter every home in ten year the same as personal computers have entered into almost every home in ten year. This project is to response to this trend, and to think about how robot can enhance learning, for example, robot can be as learning tools, teaching tools, learning companions, teaching partner, or some other models to enhance learning.

关键词： Educational robots Cognitive robotics Robot sensing systems Educational programs Intelligent networks computer science education Electronic learning Collaborative work computer science Educational technology

来源：评论

学校读者我要写书评

暂无评论

完美的门限秘密共享体制

完美的门限秘密共享体制

引用

中国密码学会2009年会

作者： Lin Changlu 林昌露 Harn Lein LeinHarn Key Laboratory of Network Security and Cryptology Fujian Normal UniversityFujian350007P.R.China S 福建师范大学网络安全与密码技术福建省高校重点实验室福建 350007 中科院研究生院信息安全国家重点实验室北京 100049 北京交通大学通信与信息系统北京市重点实验室北京 100044 Department of Computer Science Electrical Engineering University of Missouri-Kansas CityMO 64110US Missouri-Kansas城市大学计算机科学电子工程系密苏里 64110 美国

Shamir首次提出了(t,n)门限密钥共享体制,该体制的子密钥由有限域上的多项式生成,且其主密钥可通过拉格朗日插值公式重构得到.Ghodosi等人证明了在Shamir体制中如果多项式的次数恰好为(t-1)次,那么该体制就不是完美的;他们还指出如果该... 详细信息

Shamir首次提出了(t,n)门限密钥共享体制,该体制的子密钥由有限域上的多项式生成,且其主密钥可通过拉格朗日插值公式重构得到.Ghodosi等人证明了在Shamir体制中如果多项式的次数恰好为(t-1)次,那么该体制就不是完美的;他们还指出如果该多项式的次数至多为(t-1)次,那么该体制就是完美的.在由Benaloh提出的可验证密钥共享体制(VSS)中,其可验证性是指所有子密钥持有者在不知道主密钥和其他人的子密钥情况下可以验证所有子密钥是否由一个次数至多为(t-1)次的多项式生成.最近,Lin等人提出强可验证密钥共享体制(SVSS).在Lin等人的体制中,所有子密钥是由一个次数恰好为(t-1)次的多项式生成.本文提出了一个新的(t,n)门限密钥共享体制该;该体制的所有子密钥是由一个次数恰好为(t,n)次的多项式生成的,且它是完美的;该体制与Shamir体制一样的有效.

关键词：门限密钥共享体制子密钥多项式次数

来源：评论

学校读者我要写书评

暂无评论

A Secure Web Services Model Based on the Combination of SOAP Registration Info and Token Proxy

A Secure Web Services Model Based on the Combination of SOAP...

引用

International Symposium on computer Science and Computational Technology, ISCSCT

作者： Youxiang Duan Yongtang Bao Lijiang Pan Beibei Yan Jiuyun Xun Nianyun Shi Department of Computer and Communication Engineering China University of Petroleum Dongying China Dept of Computer and Communication Engineering China University of Petroleum (East China) Dongying China Department of Marketing Management The institute of Architecture Designing of Dongying Dongying China Finance Bureau Information Center of Dongying China University of Petroleum (East China) Dongying China Finance Bureau Information Center of Dongying China University of Petroleum Dongying China Dept. of Marketing Management institute of Architecture Designing of Dongying Dongying China Institute Network Information and System China University of Petroleum (East China) Dongying China Institute Network Information and System China University of Petroleum Dongying China

Along with the thorough development and application for Web services, the security of it has taken people¿s attention more and more. While Web services security (WSS) can exchange safe SOAP message and enhance the security of Web services, it will also have certain influence to the performance of Web services. In order to satisfy the security of it , to reduce the performance influence of Web services and to solve both the requester and provider side cannot recognize the security token, in this paper, we aim at proposing a SOAP information registration and security token proxy model for Web services (SIRSTPM). We has carried on the formalizing and verifying of this model. The result of theoretical verification shows this model is secure and effective. This model is helpful for solving the problem between security and performance contradiction as well as the token cannot be recognized by both the requester and the provider.

关键词： Web services Simple object access protocol Information security Petroleum computer networks Service oriented architecture Communication system security computer science Design engineering Finance

来源：评论

学校读者我要写书评

暂无评论

Novel MLSE Interference Canceller with an APC Circuit that Compensates for Phase Rotation of Interference Signals

Novel MLSE Interference Canceller with an APC Circuit that C...

引用

4th International Conference on Circuits and Systems for Communications (ICCSC 2008), vol.2

作者： Hiroshi Yoshioka Yushi Shirato Kazuji Watanabe Keisuke Nakano Masakazu Sengoku NTT East Corporation Tokyo Japan NTT Network Service Systems Laboratories Tokyo Japan NTT Network Innovation Laboratories Tokyo Japan Department of Computer Engineering Niigata University Niigata Japan

We propose a novel interference canceller with an automatic phase control (APC) circuit that compensates for the phase error of interference signals. The proposed APC circuit estimates and compensates for the phase rotation of interference signals, enabling the proposed interference canceller with APC to achieve high BER performance. We use a maximum likelihood sequence estimation (MLSE) interference canceller for fixed wireless access (FWA) co-channel interferences. Degradations of signal replica accuracy incur a BER performance penalty. The novel APC circuit, which uses a simple estimation algorithm, can effectively compensate for frequency offset and phase rotation. computer simulations show that our proposed interference canceller improves BER performance.

关键词： MLSE FWA Interference canceller APC

来源：评论

学校读者我要写书评

暂无评论

Unified Parallel Systolic Multiplier Over GF（2^m）

引用

Journal of computer Science & Technology 2007年第1期22卷 28-38页

作者：李秋莹陈永辉邱绮文林志敏 Department of Computer Information and Network Engineering Lunghwa University of Science and Technology Taoyuan County 333 Taiwan China Department of Computer Science and Information Engineering Ching Yun University Chung-Li 320 Taiwan China Department of Information Engineering and Computer Science Feng Chia University Taichung City 407 Taiwan China

In general, there are three popular basis representations, standard （canonical, polynomial） basis, normal basis, and dual basis, for representing elements in GF（2^m）. Various basis representations have their distinct advantages and have their different associated multiplication architectures. In this paper, we will present a unified systolic multiplication architecture, by employing Hankel matrix-vector multiplication, for various basis representations. For various element representation in GF（2^m）, we will show that various basis multiplications can be performed by Hankel matrix-vector multiplications. A comparison with existing and similar structures has shown that time complexities. the proposed architectures perform well both in space and

关键词： Hankel matrix-vector multiplication bit-parallel systolic multiplier Galois field GF（2^m）

来源：评论

学校读者我要写书评

暂无评论

Low-complexity bit-parallel multipliers for a class of GF(2m) based on modified Booth's algorithm

引用

International Journal of computers and Applications 2007年第4期29卷 337-345页

作者： Lee, C.-Y. Chiou, C.W. Department of Computer Information and Network Engineering Lunghwa University of Science and Technology Taoyuan County 333 Taiwan Department of Computer Science and Information Engineering Ching Yun University 320 Taiwan

This investigation presents an effective algorithm for computing multiplication over a class of GF(2m) based on both irreducible all one polynomials (AOPs) and equally spaced polynomials (ESPs). The proposed AOP-based multiplier uses the modified Booth's algorithm to develop a new multiplexer-based bit-parallel multiplier that is simple and modular and such properties are important for VLSI hardware implementation. The multiplier requires ⌈m/4⌉ (m+1) MUX4×1 and (1.5m 2+0.5m - 1) XOR gates. Its time delay is not greater than T M + (3 + log2⌈m/4⌉)TX, where T M and Tx are the time delays of MUX4×1 and 2-input XOR gate, respectively. For a certain degree, an irreducible ESP with a high degree can be obtained from a corresponding irreducible AOP with a relatively very low degree. Using the subword parallel processing, the proposed AOP-based multiplier with low degree can also be adopted to realize ESP-based multipliers with high degrees.

关键词： Electron multipliers

来源：评论

学校读者我要写书评

暂无评论

Evolutionary algorithm for a genetic robot’s personality

Evolutionary algorithm for a genetic robot’s personality

引用

IEEE International Workshop on Robot and Human Communication (ROMAN)

作者： Kang-Hee Lee Hyun-Sik Shim Woo-Sup Han Kwang-Choon Kim Jong-Hwan Kim Fundamental Technology Team Mechatronics & Manufacturing Technology Center Corporate Technology Operations Samsung Electronics Company Limited South Korea Application Technology Laboratory Telecommunication Research and Development Center Telecommunication Network Business Samsung Electronics Company Limited South Korea Faculty of Department of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology South Korea

This paper proposes a new concept of the genetic robot which has its own robot genome, in which each chromosome consists of many genes that contribute to defining the robotpsilas personality. The large number of genes also allows for a highly complex system, however it becomes increasingly difficult and time-consuming to ensure reliability, variability and consistency for the robotpsilas personality while manually initializing values for the individual genes. To overcome this difficulty, this paper proposes an evolutionary algorithm for a genetic robotpsilas personality (EAGRP). EAGRP evolves a gene pool that customizes the robotpsilas genome so that it closely matches a simplified set of features desired by the user. It does this using several new techniques. It acts on a 2 dimensional individual upon which a new masking method, the Eliza-Meme scheme, is used to derive a plausible individual given the restricted preference settings desired by the user. The proposed crossover method allows reproduction for the 2-dimensional genome. Finally, the evaluation procedure for individuals is carried out in a virtual environment using tailored perception scenarios.

关键词： Robots

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：