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Estimation of Semiparametric Model with Censored Data

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Estimation of Semiparametric Model with Censored Data

Dam risk assistant analysis system design

2010 Chinese Control and Decision Conference

作者： Chen Zhongwei and Lu Yiqiang institute of electronic technology,the PLA information engineering university,zhengzhou,450004

For semiparametric regression model with censored data,we firstly propose the estimators of parametric and nonparametric part by the use of kernel method based on distribution function and least squares ***,the asympt... 详细信息

关键词： semiparametric model censored data asymptotic normality strong consistency

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Science china(Technological Sciences) 2008年第S2期51卷 101-109页

作者： HE XianFeng1,2,3,GU ChongShi3,4,WU ZhongRu3,4 & SU HuaiZhi3,4 1 Yellow River institute of Hydraulic Research,zhengzhou 450003,china 2 Embankment Security Defect Prevention and Control engineering Research Center of MWR,zhengzhou 45000,china 3 College of Water Resources and Hydropower engineering,Hohai university,Nanjing 210098,china 4 National engineering Research Center of Water Resources Efficient Utilization and engineering Safety,Hohai university,Nanjing 210098,china Yellow River institute of Hydraulic Research Zhengzhou China Embankment Security Defect Prevention and Control engineering Research Center of MWR Zhengzhou China College of Water Resources and Hydropower engineering Hohai University Nanjing China National engineering Research Center of Water Resources Efficient Utilization and engineering Safety Hohai University Nanjing China

In order to reduce the labor intensity and task difficulty of dam risk analysis and to meet the actual requirement of dam risk analysis,it is necessary to establish a dam risk assistant analysis *** program structure and the implementation ways of the dam risk assistant analysis system are analyzed,and a procedural framework with "three-tier and multi-database" structure and "level structure" is *** concept of dam risk assessment system modular development is proposed and the coupled mode of function module and data is ***,the dam risk assistant analysis system is developed using Delphi visual programming language.

关键词： dam risk risk analysis assistant analysis system

New method for measuring the degree of conflict among general basic probability assignments

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Science china(information Sciences) 2012年第2期55卷 312-321页

作者： HE You1,HU LiFang1,2,GUAN Xin1,3,DENG Yong4 & HAN DeQiang5 1Research institute of information Fusion,Naval Aeronautical and Astronautical university,Yantai 264001,china 2Navy Armament Academy,Beijing 102249,china 3The institute of electronic Science and engineering,National university of Defense technology,Changsha 410073,china 4School of electronics and information technology,Shanghai Jiao Tong university,Shanghai 200240,china 5institute of Integrated Automation,Xi'an Jiaotong university,Xi'an 710049,china Research institute of information Fusion Naval Aeronautical and Astronautical University Yantai China Navy Armament Academy Beijing China The institute of electronic Science and engineering National University of Defense Technology Changsha China School of electronics and information technology Shanghai Jiao Tong University Shanghai China institute of Integrated Automation Xi’an Jiaotong University Xi’an China

There is doubt about Dempster's rule of combination because of counter-intuitive results when dealing with conflict information in intelligent ***,many modified combination rules have been presented in the literature on multi-source information fusion and reasoning with ***,the issue of identifying conflict among evidence has been ignored.A new parameter measuring conflict evidence called the conflict distance parameter is defined to determine whether there are conflicts in evidence based on the analysis of existing conflict *** the same time,a decisive rule,which a reasonable conflict measure function should satisfy,is put ***,an analysis of two typical counter-intuitive situations is given,showing that the new parameter can not only satisfy the decisive rule,but can also attain the same effect as a two-dimensional measure when deciding whether to use the Dempster's rule of combination,and can exceed its effect when deciding whether to use Dezert-Smarandache theory.

关键词： conflict evidence Dezert-Smarandache theory Dempster’s rule of combination information fusion uncertainty

Narrowband imaging method for spatial precession cone-shaped targets

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Science china(Technological Sciences) 2010年第4期53卷 942-949页

作者： DING XiaoFeng1,FAN MeiMei1,WEI XiZhang1,LI Xiang1 & Xiao HuaiTie2 1 institute of Space electronics information technology,National university of Defense technology,Changsha 410073,china 2 School of electronic Science and engineering,National university of Defense technology,Changsha 410073,china institute of Space electronics information technology National University of Defense Technology School of electronic Science and engineering National University of Defense Technology

The imaging method of the mid-course missile is the key technique of the missile defense *** of the special precession character of the ballistic missile warhead,the inverse synthetic aperture radar method cannot realize phase compensation with the constant phase offset function,which leads to blurring of the *** this paper,we propose a new narrowband radar imaging method for the precession cone-shaped *** method acquires the Doppler modulation of the precession target's scattering centers with high resolution time-frequency analysis method and extracts the Doppler parameter from the result of the time-frequency analysis with the general Radon transform,then reconstructs the scattering centers positions in the parameter *** experiment results with the anechoic chamber data of the representative cone-shaped object showed the effectiveness of the method.

关键词： narrowband radar imaging time-frequency analysis general Radon transform

A New Method for Recognizing Point Targets

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Journal of Systems engineering and electronics 1997年第3期8卷 16-20页

作者： Li Hong, Sun Zhongkang & Xu Hui institute of electronic engineering, National university of Defense technology, Changsha 410073, P. R. china institute of electronic engineering National University of Defense Technology Changsha 410073 P. R. China

An information fusion method based on the combination of artificial neural networks (ANN) and Dempster Shafer's evidence theory to identify point targets is introduced in this paper. Two kinds of targets fly together in high space from far away, so that each of them occupies only one pixel in the image obtained by the detector and has not any shape characteristics. These two targets are supposed to have identical motion and visible characteristics but different construction, so the infrared characteristics is the only characteristics available. Six and twelve infrared features are adopted, respectively. A BP networks is used to identify these targets at first, then an information fusion method. It is found that the later has a much higher identification rate.

关键词： Artificial neural networks BP networks Dempster Shafer's evidence theory.

ATN-XPSL:An Access Control Policy Specification Language for Automated Trust Negotiation

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ATN-XPSL:An Access Control Policy Specification Language for...

Arithmetic computation using self-assembly of DNA tiles:subtraction and division

2006北京地区高校研究生学术交流会

作者： ZHOU Jing, ZHANG Hong-Qi, GENGYan-Jun (institute of electronic technology, information engineering university, zhengzhou HeNan 450004, china)

In Automated Trust Negotiation) ATN), the provider of the service or resources and the requester establish trust relationships through exchanging digitally signed credentials. The participants specify corresponding access control policies to protect the services, resources they are providing and the credentials they are holding. After analyzing the requirements of the ATN for policy specification language, an XML based policy specification language which is named ATN-XPSL is developed for the ATN. The syntax, semantic and the Basic-Policy, Combo-Policy, Chain-Policy are expatiated with instances. At last, two tools for developing the policy based on ATN-XPSL is introduced.

关键词： Automated Trast Negotiation Access Control Policy XML

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Progress in Natural Science:Materials International 2009年第3期19卷 377-388页

作者： Xuncai Zhang a,b, Yanfeng Wang b, Zhihua Chen a, Jin Xu a,*, Guangzhao Cui b a The Key Laboratory of Image Processing and Intelligent Control, Department of Control Science and engineering, Huazhong university of Science and technology, Wuhan 430074, china b School of Electrical and electronic engineering, zhengzhou university of Light Industry, zhengzhou 450002, china The Key Laboratory of Image Processing and Intelligent Control Department of Control Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China School of Electrical and electronic engineering Zhengzhou University of Light Industry Zhengzhou 450002 China

Recently, experiments have demonstrated that simple binary arithmetic and logical operations can be computed by the process of self- assembly of DNA tiles. In this paper, we show how the tile assembly process can be used for subtraction and division. In order to achieve this aim, four systems, including the comparator system, the duplicator system, the subtraction system, and the division system, are pro- posed to compute the difference and quotient of two input numbers using the tile assembly model. This work indicates that these systems can be carried out in polynomial time with optimal O(1) distinct tile types in parallel and at very low cost. Furthermore, we provide a scheme to factor the product of two prime numbers, and it is a breakthrough in basic biological operations using a molecular computer by self-assembly.

关键词： Self-assembly Subtractor Divider Tile assembly model DNA tiles DNA computing

A new approach based on PSO algorithm to find good computational encoding sequences

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Progress in Natural Science:Materials International 2007年第6期17卷 712-716页

作者： Cui Guangzhao1, Niu Yunyun1, Wang Yanfeng1, Zhang Xuncai2 and Pan Linqiang2(1. School of Electrical and electronic engineering, zhengzhou university of Light Industry, zhengzhou 450002, china 2. Research institute of Biomolecular Computer, Huazhong university of Science and technology, Wuhan 430074, china) School of Electrical and electronic engineering Zhengzhou University of Light Industry Zhengzhou 450002 China Laboratoire de magnetisme Louis Neel 25 avenue des Martyrs 38042 Grenoble cedex 9 France

Computational encoding DNA sequence design is one of the most important steps in molecular computation. A lot of research work has been done to design reliable sequence library. A revised method based on the support system developed by Tanaka et al. is proposed here with different criteria to construct fitness function. Then we adapt particle swarm optimization (PSO) algorithm to our encoding problem. By using the new algorithm, a set of sequences with good quality is generated. The result also shows that our PSO-based approach could rapidly converge at the minimum level for an output of the simulation model. The celerity of the algorithm fits our requirements.

关键词： DNA computing computational encoding DNA sequences PSO algorithm fitness function

Identification and removal of block ambiguities in sea surface wind field with scatterometers

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Science china Earth Sciences 2009年第2期52卷 242-249页

作者： CHEN KeHai1,2, XIE XueTong3 & FANG Yu4 1 South china Sea institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, china 2 Graduate university of Chinese Academy of Sciences, Beijing 100049, china 3 School of electronic Science and engineering, National university of Defense technology, Changsha 410073, china 4 The institute of Remote Sensing and GIS, Peking university, Beijing 100871, china South china Sea institute of Oceanology Chinese Academy of Sciences Guangzhou China Graduate university of Chinese Academy of Sciences Beijing China School of electronic Science and engineering National University of Defense Technology Changsha China The institute of Remote Sensing and GIS Peking University Beijing China

The solution of the current wind retrieval algorithm for scatterometers has several wind vector ambi-guities, due to the bi-harmonic relationship between normalized backscattering cross section and the relative wind direction and the existence of the measurement error. In order to remove the ambiguities for a unique wind field, a circular median filter approach (CMF) is usually adopted. But under the con-dition for clustering distribution of the false ambiguities in some local areas, the CMF fails and thus engenders block ambiguities, which degrade the precision of the retrieved wind field. For such a situation, a technique of identification and removal of the block ambiguities is presented to further optimize the retrieved wind field after CMF. It is demonstrated in experiment that this technique can identify and remove most of the block ambiguities.

关键词： scatterometer block ambiguity identification and removal