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IEEE International Conference on Intelligence and Security Informatics, ISI

作者： Zhe Wu Jie Tian Liang Li Cai-ping Jiang Xin Yang Center for Biometrics and Security Research Key Laboratory of Complex Systems and Intelligence Science Institute of Automation Graduate School of the Chinese Chinese Academy and Sciences Beijing China Life Science Center Xidian University Xi'an Shaanxi China The First Research Institute Ministry of Public Security of PRC Beijing China

Most of secure email systems adopt PKI and IBE encryption schemes to meet security demands in communications via emails, however, both PKI and IBE encryption schemes have their own shortcomings and flaws and consequently bring security problems to email systems. This paper proposes a new secure email system based on a fingerprint authentication scheme which combines fingerprint authentication technology with IBE scheme. The system perfectly solves the existing problems encountered in email security protection implementations.

关键词： Fingerprint recognition Authentication Identity-based encryption Communication system security Cryptography Biometrics Electronic mail Protection Information security Public key

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Variable-frequency-controlled coupling in charge qubit circuits: Effects of microwave field on qubit-state readout

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Physical Review A 2007年第2期76卷 022317-022317页

作者： Xiao-Ling He Yu-xi Liu J. Q. You Franco Nori Department of Physics and Surface Physics Laboratory (National Key Laboratory) Fudan University Shanghai 200433 China Frontier Research System The Institute of Physical and Chemical Research (RIKEN) Wako-shi 351-0198 Japan CREST Japan Science and Technology Agency (JST) Kawaguchi Saitama 332-0012 Japan Center for Theoretical Physics Physics Department Center for the Study of Complex Systems The University of Michigan Ann Arbor Michigan 48109-1040 USA

To implement quantum-information processing, microwave fields are often used to manipulate superconducting qubits. We study how the coupling between superconducting charge qubits can be controlled by variable-frequency magnetic fields. We also study the effects of the microwave fields on the readout of the charge-qubit states. The measurement of the charge-qubit states can be used to demonstrate the statistical properties of photons.

关键词： QUANTUM-STATE

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Guest Editorial: Networking, Sensing, and Control for Networked Control systems: Architectures, Algorithms, and Applications

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IEEE Transactions on systems, Man, and Cybernetics, Part C (Applications and Reviews) 2007年第2期37卷 157-159页

作者： Fei-yue Wang Derong Liu Simon X. Yang Li Li Key Laboratory of Complex Systems Intelligence Science Institute of Automation Chinese Academy and Sciences Beijing China Department of Systems and Industrial Engineering University of Arizona Tucson Tucson AZ USA Institute of Electrical Engineering Yanshan University슠 Qinhuangdao China Department of Electrical and Computer Engineering University of Illinois Chicago IL USA School of Engineering University of Guelph Guelph ONT Canada Department of Automation Tsinghua University Beijing China

The eight papers in this special issue focus on networking, sensing, and control for networked control systems (NCS). The papers, which are briefly summarized, examine the architectures, algorithms and applications of... 详细信息

关键词： Control systems Networked control systems Communication system control Automatic control Communication system operations and management Computer network management Stability Resource management Computer architecture Computer networks

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A Networking Identity Authentication Scheme Combining Fingerprint Coding and Identity Based Encryption

A Networking Identity Authentication Scheme Combining Finger...

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IEEE International Conference on Intelligence and Security Informatics, ISI

作者： Liang Li Wei-Qiang Jiang Jie Tian Yi-Xian Yang Cai-Ping Jiang Zhe Wu Xin Yang Key Laboratory of Complex Systems and Intelligence Science Institute of Automation Chinese Academy of Sciences Graduate School of Chinese Academy of Sciences Beijing China Information Security Center Beijing University of Posts and Telecommunications Beijing China Life Science Center Xidian University Xi'an Shaanxi China The First Research Institute Ministry of Public Security of PRC Beijing China

Current certificate-based information security technologies are facing a challenge of lacking the exact connection between cryptographic key and legitimate users and a problem of comprehensive management of certificates. In this paper we propose a novel networking identity authentication scheme based on fingerprint coding method and Identity-based encryption (IBE). Fingerprint code is a dual-factor authenticator which combines a token, e.g. USB key, with user's fingerprint feature by direct mixing of pseudo-random number generated by token and fingerprint feature. IBE allows for a sender to encrypt a message to a receiver without access to a public key certificate. This scheme can improve the security of user authentication and simplify comprehensive management of certificates, in the meantime, protect against fingerprint data fabrication and stolen. The security and efficiency of our proposed scheme meet the requirements of practical applications.

关键词： Authentication Fingerprint recognition Identity-based encryption data security Information security Public key cryptography Technology management Universal Serial Bus RAKE receivers Public key

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Efficient one-step generation of large cluster states with solid-state circuits

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Physical Review A 2007年第5期75卷 052319-052319页

作者： J. Q. You Xiang-bin Wang Tetsufumi Tanamoto Franco Nori Department of Physics and Surface Physics Laboratory (National Key Laboratory) Fudan University Shanghai 200433 China Frontier Research System The Institute of Physical and Chemical Research (RIKEN) Wako-shi 351-0198 Japan CREST Japan Science and Technology Agency (JST) Kawaguchi Saitama 332-0012 Japan Department of Physics Tsinghua University Beijing 100084 China Corporate R & D Center Toshiba Corporation Saiwai-ku Kawasaki 212-8582 Japan Center for Theoretical Physics Physics Department Center for the Study of Complex Systems University of Michigan Ann Arbor Michigan 48109-1040 USA

Highly entangled states called cluster states are a universal resource for measurement-based quantum computing (QC). Here we propose an efficient method for producing large cluster states using superconducting quantum circuits. We show that a large cluster state can be efficiently generated in just one step by turning on the interqubit coupling for a short time. Because the interqubit coupling is only switched on during the time interval for generating the cluster state, our approach is also convenient for preparing the initial state for each qubit and for implementing one-way QC via single-qubit measurements. Moreover, the cluster state is robust against parameter variations.

关键词： COUPLED CHARGE QUBITS WAY QUANTUM COMPUTER ENTANGLEMENT

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A note on the "principle of material frame-indifference in the limit of two-dimensional turbulence"

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Communications in Nonlinear science and Numerical Simulation 2006年第7期11卷 854-860页

作者： Huang, Yu-Ning State Key Laboratory for Turbulence and Complex Systems Department of Mechanics and Engineering Science Peking University Beijing 100871 China

In this note we show that the setting up of the "principle of material frame-indifference in the limit of two-dimensional turbulence" by Speziale in the 1980s, which has been applied to turbulence modelling for the past two decades as seen from the literature, is unsound-in fact, there is an inconsistency in dealing with the fluctuating pressure which leads to contradicting the physical facts of turbulence. We conclude that this so-called "principle of material frame-indifference in the limit of two-dimensional turbulence" for turbulence modelling should be discarded. © 2005 Elsevier B.V. All rights reserved.

关键词： Atmospheric turbulence

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The refined theory of deep rectangular beams based on general solutions of elasticity

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science China(Physics,Mechanics & Astronomy) 2006年第3期49卷 291-303页

作者： GAO Yang1 & WANG Minzhong2 1. College of science, China Agricultural University, Beijing 100083, China 2. State key laboratory for Turbulence and complex systems and Department of Mechanics and Engi- neering science, Peking University, Beijing 100871, China College of Science China Agricultural University Beijing 100083 China State Key Laboratory for Turbulence Complex Systems Department of Mechanics Engineering Science Peking University Beijing 100871 China

The problem of deducing one-dimensional theory from two-dimensional the- ory for a homogeneous isotropic beam is investigated. Based on elasticity theory, the re- fined theory of rectangular beams is derived by using Papkovich-Neuber solution and Lur’e method without ad hoc assumptions. It is shown that the displacements and stresses of the beam can be represented by the angle of rotation and the deflection of the neutral surface. Based on the refined beam theory, the exact equations for the beam without transverse surface loadings are derived and consist of two governing differential equations: the fourth-order equation and the transcendental equation. The approximate equations for the beam under transverse loadings are derived directly from the refined beam theory and are almost the same as the governing equations of Timoshenko beam theory. In two ex- amples, it is shown that the new theory provides better results than Levinson’s beam the- ory when compared with those obtained from the linear theory of elasticity.

关键词： deep rectangular beams,the refined theory,Papkovich-Neuber solution,Lur'e method,governing equation

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Intermediate processes and critical phenomena: Theory, method and progress of fractional operators and their applications to modern mechanics

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science China(Physics,Mechanics & Astronomy) 2006年第3期49卷 257-272页

作者： XU Mingyu1 & TAN Wenchang2 1. Institute of Applied Mathematics, School of Math & System science, Shandong University, Jinan 250100, China 2. State key laboratory of Turbulence and complex systems & Department of Mechanics and Engineering science, Peking University, Beijing 100871, China Institute of Applied Mathematics School of Math & System Science Shandong University Jinan 250100 China State Key Laboratory of Turbulence Complex Systems & Department of Mechanics Engineering Science Peking University Beijing 100871 China

From point of view of physics, especially of mechanics, we briefly introduce fractional operators (with emphasis on fractional calculus and fractional differential equa- tions) used for describing intermediate processes and critical phenomena in physics and mechanics, their progress in theory and methods and their applications to modern me- chanics. Some authors’ researches in this area in recent years are included. Finally, prospects and evaluation for this subject are made.

关键词： fractional operators,intermediate processes,critical phenomena,modern mechanics

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The refined theory of transversely isotropic piezoelectric rectangular beams

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science China(Physics,Mechanics & Astronomy) 2006年第4期49卷 473-486页

作者： GAO Yang1 & WANG Minzhong2 1. College of science, China Agricultural University, Beijing 100083, China 2. State key laboratory for Turbulence and complex systems and Department of Mechanics and Engi- neering science, Peking University, Beijing 100871, China 1. College of Science China Agricultural University Beijing 100083 China 2. State Key Laboratory for Turbulence and Complex Systems and Department of Mechanics and Engineering Science Peking University Beijing 100871 China

The problem of deducing one-dimensional theory from two-dimensional theory for a transversely isotropic piezoelectric rectangular beam is investigated. Based on the piezoelasticity theory, the refined theory of piezoelectric beams is derived by using the general solution of transversely isotropic piezoelasticity and Lur'e method without ad hoc assumptions. Based on the refined theory of piezoelectric beams, the exact equations for the beams without transverse surface loadings are derived, which consist of two governing differential equations: the fourth-order equation and the transcendental equation. The approximate equations for the beams under transverse loadings are derived directly from the refined beam theory. As a special case, the governing differential equations for transversely isotropic elastic beams are obtained from the corresponding equations of piezoelectric beams. To illustrate the application of the beam theory developed, a uniformly loaded and simply supported piezoelectric beam is examined.

关键词： rectangular beams, the refined theory, piezoelectric, transversely isotropic.

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Differentiation of syndromes with SVM

Differentiation of syndromes with SVM

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3rd International Symposium on Neural Networks, ISNN 2006 - Advances in Neural Networks

作者： Sun, Zhanquan Xi, Guangcheng Yi, Jianqiang Key Laboratory of Complex Systems and Intelligence Science Institute of Automation Academy of Sciences 100080 Beijing China

ISBN: (纸本)3540344829

Differentiation of syndromes is the kernel theory of Traditional Chinese Medicine (TCM). How to diagnose syndromes correctly with scientific means according to symptoms is the first problem in TCM. Several modern approaches have been applied, but no satisfied results have been obtained because of the complexity of diagnosis procedure. Support Vector Machine (SVM) is a new classification technique and has drawn much attention on this topic in recent years. In this paper, we combine non-linear Principle Component Analysis (PCA) neural network with multi-class SVM to realize differentiation of syndromes. Non-linear PCA is used to preprocess clinical data to save computational cost and reduce noise. The multi-class SVM takes the non-linear principle components as its inputs and determines a corresponding syndrome. Analyzing of a TCM example shows its effectiveness. © Springer-Verlag Berlin Heidelberg 2006.

关键词： Drug products

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