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Journal of Systems Science & Complexity 2010年第4期23卷 861-872页

作者： Liying LIU Zengxin WEI Xiaoping WU college of Mathematics Science Liaocheng University Liaocheng 252059 China college of Mathematics and information Science Guangxi University Nanning 530004 China School of Management Xi'an Jiaotong University Xi'an 710049 China

In this paper,a new modified BFGS method without line searches is *** traditionalBFGS method,this modified BFGS method is proposed based on the so-called fixed steplengthstrategy introduced by Sun and *** some suitable assumptions,the global convergence andthe superlinear convergence of the new algorithm are established,*** some preliminarynumerical experiments,which shows that the new Algorithm is feasible,is also reported.

关键词： BFGS method complexity systems global convergence superlinear convergence unconstrained optimization.

Spatial continuity incorporated multi-attribute fuzzy clustering algorithm for blood vessels segmentation

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Science china(information Sciences) 2010年第4期53卷 752-759页

作者： HAO JuTao1*, ZHAO JingJing2 & LI MingLu3 1School of Optical-electrical and Computer engineering, university of Shanghai for Science and Technology, Shanghai 200093, china 2Department of electrical engineering, Shanghai university of Electric Power, Shanghai 200090, china 3Department of Computer Science and engineering, Shanghai jiaotong university, Shanghai 200240, china 1. School of Optical-electrical and Computer engineering University of Shanghai for Science and Technology Shanghai 200093 China2. Department of Electrical Engineering Shanghai University of Electric Power Shanghai 200090 China3. Department of Computer Science and Engineering Shanghai Jiaotong University Shanghai 200240 China

A three-dimensional representation of vasculature can be extremely important in image-guided neurosurgery, pre-surgical planning. In this paper, a spatial continuity incorporated multi-attribute fuzzy clustering algorithm (MAFCM S) is proposed to segment entire blood vessels from TOF MRA images. This clustering method takes both the intensity information and the geometrical information into account, while most of the cur- rent clustering methods only deal with the former. In this method, a new dissimilarity measure, which integrates the intensity and the geometry shape dissimilarity, is introduced. Because of the presence of the geometrical information, the new measure is able to differentiate the pixels with similar intensity values within different geometrical shape structures. Experimental results show that the new algorithm can get better segmentation.

关键词： fuzzy c-means clustering scale space analysis spatial continuity blood vessel segmentation multi-attribute fuzzy clustering

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基于星型配置策略的协同定位算法

系统仿真学报 2010年第3期22卷 691-694页

作者：徐维涛郝晓弘张萍兰州理工大学电气工程与信息工程学院兰州730050

为了改善无线传感器网络整体连通性,避免监控区域出现"黑洞"现象,提出了无线传感器网络节点的星型配置策略。通过RSSI和AOA相结合的协同定位算法实现了节点定位,算法中采用影射机制建立了传感器节点的平面坐标计算新方法。计算机仿真结... 详细信息

为了改善无线传感器网络整体连通性,避免监控区域出现"黑洞"现象,提出了无线传感器网络节点的星型配置策略。通过RSSI和AOA相结合的协同定位算法实现了节点定位,算法中采用影射机制建立了传感器节点的平面坐标计算新方法。计算机仿真结果表明该算法能够明显提高节点的定位精度,定位精度小于1米。

关键词：无线传感器网络配置策略模型信道损失协同定位

Online multiple instance regression

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Chinese Physics B 2013年第9期22卷 656-661页

作者：王志岗赵增顺张长水 Department of Automation Tsinghua UniversityState Key Laboratory of Intelligent Technologie and SystemsTsinghua National Laboratory for Information Science and Technology college of information and electrical engineering Shandong University of Science and Technology School of Control Science and engineering Shandong University

The multiple instance regression problem has become a hot research topic recently. There are several approaches to the multiple instance regression problem, such as Salience, Citation KNN, and MI-ClusterRegress. All of these solutions work in batch mode during the training step. However, in practice, examples usually arrive in sequence. Therefore, the training step cannot be accomplished once. In this paper, an online multiple instance regression method ＂OnlineMIR＂ is proposed. OnlineMIR can not only predict the label of a new bag, but also update the current regression model with the latest arrived bag. The experimental results show that OnlineMIR achieves good performances on both synthetic and real data sets.

关键词： mutiple instance regression online learning

Repetitive learning control of nonlinear systems over finite intervals

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Science china(information Sciences) 2010年第1期53卷 115-128页

作者： SUN MingXuan1, WANG DanWei2 & CHEN PengNian3 1college of information engineering, Zhejiang university of Technology, Hangzhou 310014, china 2School of electrical and Electronic engineering, Nanyang Technological university, Singapore 639794 3Department of Mathematics, china Institute of Metrology, Hangzhou 310018, china 1. college of information engineering Zhejiang University of Technology Hangzhou 310014 China2. School of Electrical and Electronic Engineering Nanyang Technological University Singapore 639794 Singapore3. Department of Mathematics China Institute of Metrology Hangzhou 310018 China

Iterative learning control requires initial repositioning, while the time functions to be learned should be of periodicity in repetitive control. However, there are cases in practice where the time-varying unknowns are not periodic but repetitive, and repetitive learning control is applicable with avoidance of initial repositioning. In this paper, repetitive learning control designs are presented for a broader class of nonlinear systems over finite intervals. The Freeman formula is modified and used for stabilization of the nominal nonlinear time-varying system undertaken. The global stability of the learning system and asymptotic convergence of the tracking error are established through analysis of both partially and fully saturated learning algorithms, respectively. The repetitive learning control method is theoretically shown to be effective in dealing with time-varying parametric uncertainties.

关键词： Initial condition problem convergence iterative learning control repetitive control repetitive learning control nonlinear systems

Asynchronous cooperative communication systems:A survey on signal designs

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Science china(information Sciences) 2011年第8期54卷 1547-1561页

作者： WANG HuiMing 1,2 & XIA XiangGen 3 1 School of Electronic and information engineering, Xi’an jiaotong university, Xi’an 710049,china 2 State Key Laboratory of Integrated Services Networks, Xidian university,Xi’an 710049, china 3 Department of electrical and Computer engineering,university of Delaware,Newark,DE 19716,USA 1. School of Electronic and information engineering Xi’an Jiaotong University Xi’an 710049 China2. State Key Laboratory of Integrated Services Networks Xidian University Xi’an 710049 China3. Department of Electrical and Computer Engineering University of Delaware Newark DE 19716 USA

Cooperative communications is a promising technique for future high speed wireless *** systems may be formulated as virtual multi-input multi-output (MIMO) systems where spatial/cooperetive diversity is a key advantage. However,different from MIMO systems,one of the major chal- lenges for cooperative communications systems is that the cooperative transmissions in cooperative systems may be neither time nor frequency synchronized,since the transmissions are from multiple cooperative nodes at different *** existing signal designs for co-located MIMO systems may not be able to collect the cooperative diversity in cooperative communications *** paper gives an overview of recent research efforts on combating the time and frequency asynchronism of the cooperative communication *** focus on the signal designs (or space-time codings/modulations) to achieve full cooperative diversity,and summarize some of the resent distributed space-timing coding and space-frequency coding techniques to combat timing errors and frequency offsets,and in the meantime to achieve full cooperative diversity,in both one-way and two-way cooperative networks.

关键词： cooperative communications time and frequency offsets space-time coding space-frequency codes full cooperative diversity linear receiver

A hybrid Differential Evolution Algorithm for Nonlinear Parameter Estimation of Kinetic Systems

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A hybrid Differential Evolution Algorithm for Nonlinear Para...

Research and Design of IP Phone Based on VoIP Technology

第24届中国控制与决策会议

作者： Chao Zhao, Aimin An college of Chemistry and Chemical engineering, FuZhou university,FuZhou,350108,P.R.china. Qiaolin Xu Faculty of School of electrical engineering and information engineering, lanzhou university of Technology, lanzhou,Gansu 730050, china

The determination of the optimal model parameters for kinetic systems development of kinetic models is a time consuming, iterative process [1]. In this paper, we presented a novel hybrid Differential Evolution （DE） algorithm for solving kinetic parameter estimation problems based on the Differential Evolution technique together with a local search strategy. By combining the merits of DE with Gauss-Newton method, the proposed hybrid approach employs a DE algorithm for identifying promising regions of the solution space followed by use of Gauss-Newton method to determine the optimum in the identified regions. The computational results indicate that the global searching ability and the convergence speed of this hybrid algorithm are significantly improved. Additionally, study of kinetic model parameters for an irreversible, first-order reaction system was carried out to test the applicability of the proposed algorithm. The suggested method can be used to estimate suitable values for the model parameters of a complex mathematical model.

关键词： Parameter estimation Kinetic models Hybrid Differential Evolution (HDE) Guass-Newton method

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微计算机信息 2003年第9期 88-89+16页

作者： Yuan,Zhanting Zhang,Qiuyu Sun,Wei(college of electrical and information engineering,Gansu Univ.of Tech.,lanzhou730050,china)

To present a VoIP-based solution to LAN/Intranet-oriented IP *** core is low power dissipation DSP chip in charge of voice codec and8/16bit single-chip in charge of communications protocol processing and control *** IP Phone can be used either as a desktop PC peripheral or as an Internet network terminal by RJ45or other *** pa-per introduces VoIP technology and H.323protocol stack,and some details of hardware design architecture are discussed yet.

关键词： IP Phone VoIP H.323protocol DSP

Remote condition fault diagnosis system of Wind Turbines based on Data Mining Technology

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Remote condition fault diagnosis system of Wind Turbines bas...

有限波长转换能力光突发交换网络动态波长分配机制

第三届国际自动化测试与仪器仪表学术会议

作者： Wang Huizhong Liu Guang Wang Xiaopeng (college of electrical and information engineering lanzhou Univ.of Tech 730050 china)

＜正＞A remote condition monitoring and fault diagnosis system based on data-Mining technology has been researched to ensure the large-scale Wind Turbine Generator System （WTGS） of security,stability,economy,and optimizing *** paper introduces the system’s hardware structure,software structure,and network communication. Finally,a concrete application of the system has been proved the system practicable and valid.

关键词： Wind turbine remote monitoring Fault diagnosis Data- mining

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上海交通大学学报 2009年第3期43卷 355-360页

作者：许毅范戈上海交通大学电子信息与电气工程学院上海200240

为了解决下一代可商用化的有限波长转换能力光突发交换(OBS-LWCC)网中突发包资源竞争问题,根据波长转换器所在的位置分布,将整个网络解构为多个波长连续性子段.基于分解后的网络模型,对各种波长分配算法的突发阻塞性能进行分析和综合比... 详细信息

为了解决下一代可商用化的有限波长转换能力光突发交换(OBS-LWCC)网中突发包资源竞争问题,根据波长转换器所在的位置分布,将整个网络解构为多个波长连续性子段.基于分解后的网络模型,对各种波长分配算法的突发阻塞性能进行分析和综合比较,采用传统优先级计算与子段模型结构相结合的方法,提出一种新的分布式动态波长分配策略PWA-leg.仿真实验表明,在OBS-LWCC网络结构中关键的波长可转换节点处,该算法实现了突发业务最佳承载波长(信道)的智能选择,与传统波长分配算法相比,具有更低的全网突发包阻塞率,能够更好地适应动态突发包业务和网络拓扑的变化.

关键词：光突发交换波长转换波长连续性限制突发竞争波长分配