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Progress in Natural Science:Materials International 2008年第11期18卷 1437-1443页

作者： Junwei Wang Dingwei Wang Institute of Systems engineering,college of information Science and engineering,Northeastern University,Shenyang 110004,China Institute of Systems engineering College of Information Science and Engineering Northeastern University Shenyang 110004 China

Referring to the flight mechanism of wild goose flock,we propose a novel version of Particle Swarm Optimization(PSO)with a leader and *** is referred to as Goose Team Optimization(GTO).The basic features of goose team flight such as goose role division, parallel principle,aggregate principle and separate principle are implemented in the recommended *** GTO,a team is formed by the particles with a leader and some *** role of the leader is to determine the search *** followers decide their flying modes according to their distances to the leader ***,a wide area can be explored and the particle collision can be really *** GTO is applied to four benchmark examples of complex nonlinear functions,it has a better computation perfor- mance than the standard PSO.

关键词： Particle swarm optimization Goose team optimization Role division Parallel principle Aggregate principle Separate principle

Training, simulation, restoration expert system for power grid

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Journal of Central South University of Technology 2001年第1期8卷 69-73页

作者： LUO An,CHEN Qian (college of information engineering, Central South University, Changsha 410083, China) 1. college of information engineering Central South University 410083 Changsha China

The paper introduces some technology for training, simulation, restoration expert system of power grid, the structure of the system including function composition, hardware and software composition are discussed, knowledge representation and the method to establish device graphical library for expert system are given, the fault setting and diagnosis for training and simulation as well as restoration technology with deep first searching arithmetic and heuristic inference are presented. The research provides a good base for developing the training, simulation, restoration system of power companies.

关键词： training simulation restoration expert system power grid

New method for passive radar seeker to antagonize non-coherent radar decoy

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Journal of Systems engineering and Electronics 2010年第3期21卷 397-403页

作者： Weijian Si,Xicai Si,and Zhiyu Qu college of information and Communication engineering,Harbin engineering University,Harbin 150001,P.R.China college of information and Communication engineering Harbin Engineering UniversityHarbin 150001P.R.China

Using super resolution direction of arrival（DOA） estimation algorithm to reduce the resolution angle is an effective method for passive radar seeker（PRS） to antagonize non-coherent radar *** the power and correlation property between radar and non-coherent decoy,an improved subspace DOA estimation method based on traditional subspace algorithm is *** this new method uses the invariance property of noise subspace,compared with traditional MUSIC algorithm,it shows not only better resolution in condition of closely spaced sources,but also superior performance in case of different power or partially correlated *** this new method,PRS can distinguish radar and non-coherent decoy with good *** the simulation result and the experimental data confirm the performance of the method.

关键词： radar countermeasures passive radar seeker(PRS) non-coherent decoy direction of arrival(DOA) estimation.

Series-based approximate approach of optimal tracking control for nonlinear systems with time-delay

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Progress in Natural Science:Materials International 2008年第12期18卷 1571-1576页

作者： Gongyou Tang~a Mingqu Fan~(a,b) a college of information Science and engineering,Ocean University of China,Qingdao 266100,China b college of information and engineering,Shandong University of Science and Technology,Jinan 250031,China [a]college of information Science and engineering Ocean University of China Qingdao 266100 China [b]college of information and engineering Shandong University of Science and Technology Jinan 250031 China

The optimal output tracking control (OTC) problem for nonlinear systems with time-delay is *** a series-based approx- imate approach,the original OTC problem is transformed into iteration solving linear two-point boundary value problems without time- *** OTC law obtained consists of analytical linear feedback and feedforward terms and a nonlinear compensation term with an infinite series of the adjoint *** truncating a finite sum of the adjoint vector series,an approximate optimal tracking control law is obtained.A reduced-order reference input observer is constructed to make the feedforward term physically *** exam- ples are used to test the validity of the series-based approximate approach.

关键词： Nonlinear systems Time-delay Tracking control Optimal control Observer

A new generation of plastic optical fibers and its functional exploiting

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Science China(Technological Sciences) 2008年第12期51卷 2197-2207页

作者： YU RongJin & ZHANG Bing college of information Science and engineering,Yanshan University,Qinhuangdao 066004,China college of information Science and engineering Yanshan University Qinhuangdao 066004 China

A major problem of plastic optical fibers(POFs) is large transmission loss in comparison with silica *** adopting a new optical fiber structure,hollow-core Bragg fiber with cobweb-structured cladding,which can suppress the absorption losses of constituent materials by a factor of about 104―106,the problem of POFs with large losses is solved *** the advantage of flexibility and easy bending,the POFs with this structure can guide light with low transmission loss for information and energy in the wavelength range of visible light to terahertz(THz) wave(0.4―1000 μm).This new generation of POFs will find many applications.

关键词： plastic optical fiber hollow-core Bragg fiber cobweb-structured cladding visible light infrared light terahertz wave circular-polarization single-mode

Predictor-corrector interior-point algorithm for linearly constrained convex programming

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Journal of Central South University 2001年第3期13卷 208-212页

作者： LIANG Xi-ming (college of information Science & engineering, Central South University, Changsh a 410083, China) 1. college of information Science & engineering Central South University 410083 Changsha China

Active set method and gradient projection method are curre nt ly the main approaches for linearly constrained convex programming. Interior-po int method is one of the most effective choices for linear programming. In the p aper a predictor-corrector interior-point algorithm for linearly constrained c onvex programming under the predictor-corrector motivation was proposed. In eac h iteration, the algorithm first performs a predictor-step to reduce the dualit y gap and then a corrector-step to keep the points close to the central traject ory. Computations in the algorithm only require that the initial iterate be nonn egative while feasibility or strict feasibility is not required. It is proved th at the algorithm is equivalent to a level-1 perturbed composite Newton method. Numerical experiments on twenty-six standard test problems are made. The result s show that the proposed algorithm is stable and robust.

关键词： linearly constrained convex programming predictor corrector interior point algorithm numerical experiment

Analysis on crossover probability estimation using LDPC syndrome

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Science China(information Sciences) 2011年第9期54卷 1895-1904页

作者： FANG Yong college of information engineering,Northwest A&F University,Yangling 712100,China 1. college of information engineering Northwest A&F University Yangling 712100 China

Correlation estimation is a critical issue that impacts the application of Slepian-Wolf coding (SWC) in *** online correlation estimation is a type of newly-appearing approaches,in which the decoder estimates the virtual correlation channel between two correlated sources using both side information and the compressed SWC bitstream of the *** the compressed SWC bitstream usually contains partial information of the source,the emergence of dynamic online correlation estimation is helpful to solving the problem of correlation estimation in the SWC and further makes the SWC ***,the SWC is usually implemented by LDPC *** this case,the SWC bitstream is just the LDPC syndrome of the *** has been revealed that there are residual redundancies in LDPC syndromes,which can be used to estimate the crossover probability between two correlated binary ***,this algorithm has not been well justified *** paper makes use of the central limit theorem (CLT) to establish a mathematic model for analyzing the performance of this ***,for irregular LDPC codes,the optimization of weight vectors is discussed in *** experimental results are provided to validate the analysis.

关键词： distributed source coding Slepian-Wolf coding LDPC syndrome correlation estimation

Survey of Unicast and Multicast Scheduling Algorithms for High Speed Input Queued Switch with Crossbar

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计算机工程 2002年第S1期28卷 113-119页

作者： E Dawei ,(information engineering college of Jimei UniversityXiamen 361021, China) information engineering college of Jimei University Xiamen 361021 China

The performance of ATM switches are mainly influenced by switching fabric and scheduling algorithms. Input buffered switches have the strong advantage of efficient crossbar usage. This paper presents an input-queued crossbar switches fabric supporting high speed switching, analyzes the scheduling algorithms for unicast trafficts and multicast traffic based on virtualoutput queueing (VOQ).Focusing on their performance issues, some typical schedulers are compared.

关键词： Switch fabrics Input-queued Unicast and multicast Scheduling algorithms

Method for determining number of coherent signals in the presence of colored noise

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Journal of Systems engineering and Electronics 2010年第1期21卷 27-30页

作者： Jiaqi Zhen, Xicai Si, and Lutao Liu college of information & Communication engineering, Harbin engineering University, Harbin 150001, P. R. China college of information & Communication engineering Harbin Engineering University Harbin 150001 P. R. China

The approach of estimating the number of signals based on information theoretic criteria has good performance in the assumption of white noise, but it always leads to false estimation of the coherent sources in colored noise. An approach combining the combined information theoretic criteria and eigen- value correction, is presented to determine number of signals. The method uses maximum likelihood （ML） and information theoretic criteria to estimate coherent signals alternately, then eliminate the inequality of the eigenvalues caused by colored noise by correcting the noise eigenvalues. The computer simulation results prove the effective performance of the method.

关键词： determining the number of signals coherent signals colored noise information theoretic criteria.