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3. Geological Modeling with Multi-source Data Integration in Polymetallic Region:A Case Study of Luanchuan,Henan Province,china

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地学前缘 2009年第S1期16卷 166-167页

作者： Gongwen Wang~(1,2),Shouting Zhang~(1,2),Changhai Yan~3.Yaowu Song~3.Limei Wang~1 1.School of Earth Sciences and Resources,china University of Geosciences(Beijing),Beijing 100083.china. 2.State Key laboratory of Geological Processes and Mineral Resources,china University of Geosciences,Beijing 100083.china 3.Henan institute of Geological Survey,zhengzhou 450007,china

The development of 3. geological models involves the integration of large amounts of geological data,as well as additional accessible proprietary lithological, structural,geochemical,geophysical,and borehole ***,the case study area,southwestern Henan Province,is an important molybdenum-tungsten -lead-zinc polymetallic belt in china.

关键词： 3. geological modeling multi-source data mineral exploration metallogenic model virtual geological section Luanchuan polymetallic region

Array errors active calibration algorithm based on instrumental sensors

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Science china(Information Sciences) 2011年第7期54卷 1500-1511页

作者： WANG Ding & WU Ying institute of Information Engineering,Information Engineering University,zhengzhou 450002,china 1. institute of Information Engineering Information Engineering University Zhengzhou 450002 China

The array mutual coupling,gain-phase errors and sensor position errors would significantly degrade the performance of high-resolution direction of arrival (DOA) estimation *** at the combined influences of the above three array errors,a kind of active calibration algorithm is presented with the help of instrumental sensors in this ***,the integrated effects of the three array errors are shown to be equivalent to angularly dependent gain-phase ***,a non-linear least square (LS) optimization model for the three array errors is established through an auto-calibration algorithm using auxiliary sensors,and the corresponding resolving algorithms of the LS optimization problem are given according to the different models of array errors ***,the parameter estimation uniqueness of the proposed algorithms is analyzed in detail and an improvement strategy is ***,the effectiveness of the novel algorithm is validated by simulations.

关键词： array calibration array errors mutual coupling effect gain-phase errors sensor position errors instrumental sensors

Array errors active calibration algorithm and its improvement

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Science china(Information Sciences) 2010年第5期53卷 1016-1033页

作者： WANG Ding & WU Ying institute of Information Engineering, Information Engineering University, zhengzhou 450002, china 1. institute of Information Engineering Information Engineering University Zhengzhou 450002 China

The combined effects of mutual coupling, gain and phase errors, and sensor position errors have great negative impact on the direction-finding performance of the MUSIC algorithm. This paper investigates the calibration of the array errors induced by the three errors. Based on the array errors calibration algorithm (algorithm 1) presented by See, two improved array error-calibrating algorithms are presented. One (algorithm 2) uses the sparseness of mutual coupling matrix, and the other (algorithm 3. utilizes more special structures of mutual coupling matrix. Although the three algorithms have the same computation mode and theoretical framework, the latter two algorithms have much higher precision than the former one, as more properties of mutual coupling matrix are utilized in the two algorithms, and if the array manifold is uniform linear array or uniform circular array, algorithm 3.could have more obvious advantages. On the other hand, the three algorithms can be generalized to the situation when the calibration source azimuths have deviations. The three extended algorithms can not only calibrate the array errors, but also offset the deviations of calibration source azimuths simultaneously. Finally, the performances of the three algorithms are compared both in the absence and presence of the deviations of calibration source azimuths. Many simulation experiments demonstrate that the estimation precision of array errors can be obviously improved if more properties of mutual coupling matrix are effectively used.

关键词： array calibration mutual coupling gain and phase error sensor position errors complex symmetric banded Toeplitz matrix complex symmetric circular matrix sparse matrix

zhengzhou: the Geographical Center of china, the Commercial Hub of the World

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Terminalic Acid, a New Tannin from the Fruit of Terminalia chebula

Beijing Review 2017年第51期 34-35页

作者： zhengzhou Transforming into china''s Central City and Welcoming Global Talent

zhengzhou,Transforming into china's Central City,and Welcoming Global Talentzhengzhou,as the provincial capital of Henan,is the political,economic,cultural,scientif ic and educational hub of the whole *** it has jurisdiction over six districts,f ive cities and one county,as well as the zhengzhou Airport Economic Zone(zhengzhou Xinzheng Comprehensive Bonded Zone),Zhengdong New District,zhengzhou Economic and Technological Development Zone and（共2页)

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Chinese Chemical Letters 1998年第9期9卷 827-828页

作者： Yan Ze LIU Bing Wu YU Gang DING (Department of Phytochemistry, Henan College of Traditional ChineseMedicine, zhengzhou 450003.,Yang Jie WU (Department of Organic Chemistry, zhengzhou University zhengzhou, 450052) Henan Coll Tradit Chinese Med Dept Phytochem Zhengzhou 450003 Peoples R China zhengzhou Univ Dept Organ Chem Zhengzhou 450052 Peoples R China

Terminalic acid 1, a new hydrolysable tannin, was isolated from the fruit of Terminalia chebula. Its structure was found to be 1-O-galloyl-2,4-chebuloyl-beta-D-glucopyranose by chemical method and H-1-NMR, C-13.NMR, H... 详细信息

关键词： Terminalia chebula hydrolysable tannins terminalic acid

The GPS-gravimetry boundary value problem

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Science china Earth Sciences 2005年第3期48卷 398-405页

作者： YU Jinhai1,2 & ZHANG Chuanding2 1. institute of Geodesy and Geophysics of Chinese Academy of Sciences, Wuhan 43.077, china 2. zhengzhou Information Engineering University, zhengzhou 450052, china 1. institute of Geodesy and Geophysics of Chinese Academy of Sciences 430077 Wuhan China 2. zhengzhou Information Engineering University 450052 Zhengzhou China

How to determine the earth’s external gravity field with the accuracy of O(T2) by making use of GPS data and gravity values measured on the earth’s surface is dealt with in this paper. There are two main steps: to extend these measured values on the earth’s surface onto the reference ellipsoid at first and then to seek for the integral solution of the external Neumann problem outside the ellipsoid. In addition, the corresponding judging criteria of accuracy to solve the GPS-gravity boundary value problem are established. The integral solution given in the paper not only contains all frequency-spectral information of the gravity field with the accuracy of O(T 2), but is also easily computed. In fact, the solution has great significance for both theory and prac- tice.

关键词： Neumann boundary value problem, integral solution, gravity disturbance.

Set up the Mechanical Curriculum System Based on Three-Dimensional design

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CADDM 2003年第Z1期 55-60页

作者： Liu Shenli1 Yang Daofu2 Liu Jipeng3.1zhengzhou institute of Light Industry, zhengzhou 450002, {3. 2Yellow River Conservancy Technical institute, Kaifeng 475001, {3. 3.0} Economic Management institute, zhengzhou 450053. {3.

The changes of design methods and manufacturing techniques have brought new requirements for engineers in enterprises, and therefore brought a challenge to the traditional teaching system of mechanical major courses. A new teaching system based on three-dimensional design to cultivate modern engineers with solid specialty bases and high creativity in a wide range of fields is presented.

关键词： three-dimensional design machine building creativity

A new learning statistic for adaptive filter based on predicted residuals

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Progress in Natural Science:Materials International 2006年第8期16卷 833-837页

作者： YANG Yuanxi and GAO Weiguang (Xi'an Research institute of Surveying and Mapping, Xi'an710054, china institute of Surveying and Mapping, University of Information Engineering, {3. 450052, china) [a]Xi' an Research institute of Surveying and Mapping Xi' an China [b]institute of Surveying Mapping University of Information Engineering Zhengzhou China

A key problem for an adaptive filter is to establish a suitable adaptive factor for balancing the contributions of the measurements and the predicted state information from some kinematic models. The reasonable adaptive factor needs a reliable learning statistics to judge the state kinematic model errors. After analyzing the existing two kinds of learning statistics based on the state discrepancy and variance component ratio, a new learning statistic based on predicted residuals is set up, which is different from the exiting learning statistics. The new learning statistic does not need to estimate the kinemetic state parameters before the filtering process, Of course, it does not need necessary measurements to estimate state parameters for all observation epochs. The new learning statistic can be applied together with the learning factor constructed by the state discrepancy. The advantages and shortcomings of the new learning factor are analyzed, and an example is given.

关键词： adaptive factor adaptive filter kinematic model predicted residual.

THE EQUIVALENCE CLASSES OF LRS OVER Z_p^e

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Systems Science and Mathematical Sciences 1998年第2期11卷 175-180页

作者： ZHU Yuefei(Department of APPlied Mathematics, zhengzhou InformationEngineering institute, zhengzhou 450002, {3.) 解放军信息工程学院应用数学系河南郑州 450002

In this paper, we discuss the counting of translation equivalellce classes oflinear recurrence sequences over Zap. For more general linear recurrence relation, we countthe number of translation equivalent classes of l... 详细信息

关键词： Sequence translation equivalence module ideal.