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Science china(information Sciences) 2011年第1期54卷 146-152页

作者： YANG TianChi1,YU ChaoQun2,WANG TianPeng1 & JIN Liang1 1National Digital Switching System engineering and Technological Research Center, zhengzhou 450002.china 2.urveying and mapping college of information engineering university, zhengzhou 450002.china 1. National Digital Switching System engineering and Technological Research Center Zhengzhou 450002 China2. Surveying and Mapping College of Information Engineering University Zhengzhou 450002 China

A target position can be estimated using position information from scattered signals in the nonline-of-sight propagation environment in a single observer location *** is always an error in the final estimated result of the position obtained using scatter signals because measurement noise is *** reduce the total error of the system,we propose a method of converting the problem of optimizing location into a one of solving the extremes of the *** the problem of how to solve the extremes of the constraints is converted into an unconstrained problem by using the constrained total least squares(CTLS) ***,the Newton iteration method is used to obtain the optimized *** results also verify the capability of this method.

关键词： scatter position disturbing VOCTLS single observer location Newton iteration

A relationship between the nonexistence of generalized bent functions and class groups

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Science china Mathematics 2010年第1期53卷 213-222页

作者： LIU FengMei 1,& YUE Qin 21 Department of information Research,college of information engineering,information engineering university,zhengzhou 450002.china 2 Department of Mathematics,Nanjing university of Aeronautics and Astronautics,Nanjing 210016,china 1. Department of information Research College of Information Engineering Information Engineering University Zhengzhou 450002 China2. Department of Mathematics Nanjing University of Aeronautics and Astronautics Nanjing 210016 China

A new result on the nonexistence of generalized bent functions is presented by using properties of the decomposition law of primes in cyclotomic fields and properties of solutions of some Diophantine equations. At the same time,a method is given which can be used to simplify the known results. Then we give the bounds and the meaning in algebraic number theory of the parameters in our results.

关键词： generalized bent function integral basis class group genus theory

Research and progress of Beidou satellite navigation system

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Science china(information Sciences) 2012年第12期55卷 2899-2907页

作者： SUN FuPing ,LIU Shuai,ZHU XinHui & MEN BaoHong college of Navigation and Aerospace engineering,information engineering university,zhengzhou 450052,china 1. college of Navigation and Aerospace engineering Information Engineering University Zhengzhou 450052 China

The paper gives a brief review of the development course and strategic planning of Beidou satellite navigation system,and introduces its construction progress,with emphasis on the research progress of some key technologies of Beidou,including navigation constellation design,navigation signal structure and performance,compatibility and interoperability,precise orbit determination,navigation and precise *** main problems and challenges of Beidou are described.

关键词： Beidou satellite navigation system navigation constellation design navigation signal structure and performance compatibility and interoperability precise orbit determination navigation and precise positioning

Perfect reconstruction image modulation based on BEMD and quaternionic analytic signals

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Science china(information Sciences) 2011年第12期54卷 2622-2634页

作者： QIAO LiHong 1 , NIU KaiFu 2 , WANG Ning 2 & PENG LiZhong 2 1 college of information Science and engineering, Henan university of Technology, zhengzhou 450001, china 2 School of Mathematical Sciences, Peking university, Beijing 100871, china 1. college of information Science and engineering Henan University of Technology Zhengzhou 450001 China2. School of Mathematical Sciences Peking University Beijing 100871 China

Image modulation represents image by meaningful characters such as image instantaneous amplitude and instantaneous frequency. A perfect reconstruction image modulation method is proposed. In detail, the bidimensional empirical mode decomposition (BEMD) is first improved to adaptively decompose image into monocomponents. Then by the quaternionic analytic method, suitable analytic signals is acquired. A new polar form is further proposed to modulate images, then seven characters are derived including instantaneous amplitude and instantaneous frequencies. We demonstrate the techniques on both synthetic and natural images, depict the needle program of the estimated frequencies and obtain the reconstructions that are the same with the original images. The applications in image segmentation and separation establish the validity of characterizing images of this type as sums of locally narrow band modulated components.

关键词： perfect reconstruction image modulation AM-FM representation BEMD quaternionic analytic signals

Pointwise estimates for the maximal multilinear singular integral operators

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Science china Mathematics 2005年第12期48卷 1696-1706页

作者： HU Guo’en, LI Dengfeng & LU Shanzhen Department of Applied Mathematics, university of information engineering, P. O. Box 1001 -747, zhengzhou 450002, china college of Mathematical and information Sciences, Henan university, Kaifeng 475001, china Department of Mathematics, Beijing Normal university, Beijing 100875, china 1. Department of Applied Mathematics University of Information Engineering P.O.Box 1001-747 450002 Zhengzhou China 2. college of Mathematical and information Sciences Henan University 475001 Kaifeng China 3. Department of Mathematics Beijing Normal University 100875 Beijing China

Two pointwise estimates relating the maximal multilinear singular integral operators and some classical maximal operators are established. These pointwise estimates imply the rearrangement estimate and the BLO(Rn) est... 详细信息

关键词： multilinear singular integral,maximal operator,BMO (Rn),BLO (Rn).

A Nominative Multi-Proxy Signature Scheme Based on ECC

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Wuhan university Journal of Natural Sciences 2005年第1期10卷 223-226页

作者： MAChuan-gui GAOFeng-xiu WANGYan collegeofinformationengineering InformationEngineeringUniversity.Zhengzhou450002HenanChina

A nominative multi-proxy signature in which the original signer authorizes a group of proxy signers is presented. Meanwhile, our proposed scheme is based on elliptic curve cryptosystem which is more efficient than the... 详细信息

关键词： proxy signature nominative proxy signature multi-proxy signature elliptic curve cryptosystem (ECC)

System View of Product Data Management and Its Application

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武汉理工大学学报 2006年第S3期28卷 989-993页

作者： WU Feng XU Su college of information Science and engineering,Henan university of Technology,zhengzhou 450052,china, college of information Science and engineering Henan University of TechnologyZhengzhou 450052China

A product data management system for a manufacturing enterprise is to make sure that the proper product data can be communicated to the right people at the right *** paper describes a system analysis paradigm for data analysis in a product data management(PDM)*** aspects of the paradigm,i.e.,function,structure and behavior are rep- *** use of the paradigm explains why so many kinds of objects are necessary in a commercial database matrix and what models are available for developing a PDM *** another result,a lot of models are derived from the analysis of product data system paradigm to model product data and PDM database definitions.

关键词： product data management(PDM) system analysis product database paradigm

Remarks on Maximal Attractors for the Compressible Navier-Stokes Equations of Viscous and Heat Conductive Fluid

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Chinese Quarterly Journal of Mathematics 2004年第4期19卷 338-345页

作者： QIN Yu-ming, WANG Xiu-qin, CUI Guo-zhong(l. college, of Mathematics and information Science, Henan university, Kaifeng 475001, china 2. college of Science,, university of information and engineering, zhengzhou 450001, china) college of Mathematics and information Science Henan University Kaifeng 475001China college of Science University of Information and EngineeringZhengzhou 450001 China

This paper is concerned with the existence of maximal attractors in Hi (i = 1, 2,4) for the compressible Navier-Stokes equations for a polytropic viscous heat conductive ideal gas in bounded annular domains Ωn in Rn(... 详细信息

关键词： compressible Navier-Stokes equations polytropic viscous ideal gas spherically symmetric solutions absorbing set maximal attractor

Publicly Verifiable Distributed Proxy Blind Signature Scheme

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Wuhan university Journal of Natural Sciences 2007年第1期12卷 155-158页

作者： MA Chuangui CHENG Rui ZHANG Rurun college of information engineering InformationEngineering University Zhengzhou 450002 Henan China

In this present paper, we propose a new proxy blind signature scheme, which is publicly verifiable distributed. The algorithm uses the idea of secret sharing schemes to distribute original signer＇s ability and the power of the proxy signer, and ensure the property of publicly verifiable secret sharing schemes. A new concept ＂verifiable time period＂ is also introduced to reduce the time cost in the period of verifications and increases the efficiency of our scheme.

关键词： proxy signatures proxy blind signature verifiable secret sharing schemes

Multiparty simultaneous quantum identity authentication with secret sharing

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Science china(Physics,Mechanics & Astronomy) 2008年第3期51卷 321-327页

作者： YANG YuGuang1,2,WEN QiaoYan3 & ZHANG Xing4,5 1 college of Computer Science and Technology,Beijing university of Technology,Beijing 100022,china 2 State Key Laboratory of information Security (Graduate university of the Chinese Academy of Sciences),Beijing 100049,china 3 School of Science,Beijing university of Posts and Telecommunications,Beijing 100876,china 4 Institute of Electronic Technology,information engineering university,zhengzhou 450004,china 5 Trusted Computing Laboratory,Beijing university of Technology,Beijing 100022,china college of Computer Science Technology Beijing University of Technology Beijing 100022 China State Key Laboratory of information Security [Graduate university of the Chinese Academy of Sciences] Beijing 100049 China School of Science Beijing University of Posts Telecommunications Beijing 100876 China Institute of Electronic Technology Information Engineering University Zhengzhou 450004 China Trusted Computing Laboratory Beijing University of Technology Beijing 100022 China

Two multiparty simultaneous quantum identity authentication (MSQIA) protocols based on secret sharing are presented. All the users can be authenticated by a trusted third party (TTP) simultaneously. In the first protocol,the TTP shares a random key K with all the users using quantum secret sharing. The ith share acts as the authentication key of the ith user. When it is necessary to perform MSQIA,the TTP generates a random number R secretly and sends a sequence of single photons encoded with K and R to all the users. According to his share,each user performs the corresponding unitary operations on the single photon sequence sequentially. At last,the TTP can judge whether the impersonator exists. The sec-ond protocol is a modified version with a circular structure. The two protocols can be efficiently used for MSQIA in a network. They are feasible with current technol-ogy.

关键词： quantum identity authentication secret sharing quantum cryptography