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Search Results: 1 - 10 of 58457 matches for " DENG Chun-lin "
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The Application of Federated Kalman Filtering in SINS/GPS/CNS Intergrated Navigation System
DENG Hong,LIU Guang-bin,CHEN Hao-ming,DENG Chun-lin
International Journal of Wireless and Microwave Technologies , 2012, DOI: doi: 10.5815/ijwmt.2012.02.03
Abstract: Federated filter was an important method to estimate high-precision navigation parameters based on “SINS/GPS/CNS”. A no-feedback federated filter with UD_UKF algorithm was designed in the paper, a threetime amendment scheme to correct navigation parameters was designed at the same time and the mathematical model of SINS/GPS/CNS was established in launch inertial coordinate system too. The paper discussed the simulation conditions and a lot of simulations were carried out to compare 2 aspects: (1)the performance between four navigation mode, which respectively is SINS, SINS/GPS, SINS/CNS, SINS/GPS/CNS;(2)the estimate precision of federated filter and that of centralized Kalman filter. The results of simulation showed that the designed federated filter and amendment scheme based on SINS/GPS/CNS had high estimate precision and led to gain high hitting precision of ballistic missile, that is to say position errors were less than 20 meter and velocity errors were less than 0.1m/s in simulation.
Analysis of Differences in Average Net Income of Peasants in Shandong Province Based on Moran’ I and LISA
Chun-lin HAO
Cross-Cultural Communication , 2009, DOI: 10.3968/744
Abstract: Through relevant analysis of the changing space in the peasants’ average net income from 2005 to 2006 in 139 counties, towns and regions, this thesis works out the overall space statistic index Moran’s I and partial statistic index LISA, which well demonstrates the change of net income made by peasants in this area, and obviously manifest disharmony and difference from one region to another, especially from the east to the west. To solve the problem of big gap between the east and west, more efforts should be made to accelerate the development of the west. Regions in the middle and the west should renew developmental concept, rely on, serve and interconnect with central cities, speed up the transition of the surplus labor, put more investment into the construction of the agricultural infrastructure, strive to develop cooperative economic organizations and agricultural leading enterprises, energetically push the industrialization of agriculture. Key words: average net income of peasants; relationship of space; Moran’s I; LISA; regional economic differences Résumé: En faisant des analyses sur la corrélation spaciale de la variation des revenus moyens des paysans entre 2005-2006 dans 139 districts et villes dans la province du Shangdong, l’auteur a obtenu l’indice statistique de l’ensemble spacial- Moran’I et l’indice statistique de localité régionale-LISA. Ces deux indices ont bien démontré les variations des revenus moyens des paysans dans tous les districts et villes de la province du Shangdong, les disparates et les écarts entre les régions et surtout entre l’est et l’ouest. Pour résoudre le problème d’un écart trop important entre l’est et l’ouest, il faut accélérer le développement des régions dans l’ouest. Les régions du centre et de l’ouest doivent renouveler leur conception du développement et essayer de s’appuyer sur les villes centrales, les servir et les aboucher pour transférer les mains-d’oeuvre surplus, investir plus pour les infrasturctures de l’agriculture, soutenir les organisations économiques de coopération dans la campagne et les entreprises leaders agricoles et promouvoir l’industrialisation de l’agriculture. Mots-clés: revenus moyens des paysans ; corrélation spaciale ; Moran’I, LISA ; différence de l’économie régionale 摘要:通過對山東省139個縣市區2005-2006年農民人均純收入變化的空間自相關分析,得出總體空間統計指數Moran’sI與局部統計指標LISA,這兩個指數在描述山東省各縣市區農民人均純收入變化時具有顯著作用,並明顯體現出區域之間的不協調性和差異性,尤其是東西部差距明顯。解決東西部差距過大問題,需要重點加快西部地區發展。中西部地區要進一步更新發展理念,依託、服務、對接中心城市,加快剩餘勞動力轉移,加大對農業基礎設施的投入,大力發展農村合作經濟組織和農業龍頭企業,積極推進農業產業化經營。 關鍵字:農民人均純收入;空間相關性;Moran’s I;LISA;區域經濟差異
N′-(2-Hydroxy-3-methoxybenzylidene)-1,3-benzodioxole-5-carbohydrazide monohydrate
Chun-Lin Du
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536808040117
Abstract: Single crystals of the title compound, C16H14N2O5·H2O, were obtained from a condensation reaction of 1,3-benzodioxole-5-carbohydrazide and 3-methoxysalicylaldehyde in a 95% ethanol solution. The asymmetric unit consists of a Schiff base molecule, which assumes an E configuration with respect to the C=N bond, and a water molecule of crystallization. The dihedral angle between the two substituted benzene rings is 12.7 (2)°. In the crystal structure, molecules are linked through intermolecular N—H...O and O—H...O hydrogen bonds, forming layers parallel to the bc plane.
An extension of gas-kinetic BGK Navier-Stokes scheme to multidimensional astrophysical magnetohydrodynamics
Chun-Lin Tian
Physics , 2010,
Abstract: The multidimensional gas-kinetic scheme for the Navier-Stokes equations under gravitational fields [J. Comput. Phys. 226 (2007) 2003-2027] is extended to resistive magnetic flows. The non-magnetic part of the magnetohydrodynamics equations is calculated by a BGK solver modified due to magnetic field. The magnetic part is treated by the flux splitting method based gas-kinetic theory [J. Comput. Phys. 153 (1999) 334-352 ], using a particle distribution function constructed in the BGK solver. To include Lorentz force effects into gas evolution stage is very important to improve the accuracy of the scheme. For some multidimensional problems, the deviations tangential to the cell interface from equilibrium distribution are essential to keep the scheme robust and accurate. Besides implementation of a TVD time discretization scheme, enhancing the dynamic dissipation a little bit is a simply and efficient way to stabilize the calculation. One-dimensional and two-dimensional shock waves tests are calculated to validate this new scheme. A three-dimensional turbulent magneto-convection simulation is used to show the applicability of current scheme to complicated astrophysical flows.
Establishment of 3D Urban Landscape Model Based on Skyline Terrasuite
基于Skyline Terrasuite的城市三维景观的建立

DENG Jie,XIA Chun-lin,WANG Run-fang,

遥感技术与应用 , 2008,
Abstract: This paper takes the color photography picture and large-scale terrain map from Northeast University as data source,and gains the DOM data and DEM by using VirtuoZoNT3.5.After pretreatment,these data can have the same coordinate system.By using 3D GIS software Skyline Terrasuite,we overlay DOM to DEM structuring the vein coming to show 3D circumstances and the building roof 3D surface.Also by making use of a digital camera to collect the side vein of buildings,we can achieve 3D landscape of city Visualization.The paper discus above-mentioned method process,and give some experience summary.
Specification of Initial Shapes for Dynamic Implicit Curve/Surface Reconstruction
Zhou-Wang Yang,Chun-Lin Wu,Jian-Song Dang,Fa-Lai Chen,
Zhou-Wang Yang
,Chun-Lin Wu,Jian-Song Deng,and Fa-Lai Chen

计算机科学技术学报 , 2006,
Abstract: The dynamic implicit curve/surface reconstruction demands no special requirement on the initial shapes in general. In order to speed up the iteration in the reconstruction, we discuss how to specify the initial shapes so as to reflect the geometric information and the topology structure of the given data. The basic idea is based on the combination of the distance function and the generalized eigenvector fitting model. Keywords Sampson distance, generalized eigenvector fitting, dynamic implicit surface reconstruction
Geographical structures and the cholera epidemic in modern Japan: Fukushima prefecture in 1882 and 1895
Chun-Lin Kuo, Hiromichi Fukui
International Journal of Health Geographics , 2007, DOI: 10.1186/1476-072x-6-25
Abstract: Changes in diffusion patterns between 1882 and 1895 reflect improvements in the Fukushima transportation system and growth in social-economic networks. The data reveal different diffusion systems in separate regions in which residents of Fukushima and neighboring prefectures interacted. Our model also shows that an area in the prefecture's northern interior was dominated by a mix of diffusion processes (contagious and hierarchical), that the southern coastal region was affected by a contagious process, and that other infected areas experienced relocation diffusion.In addition to enhancing our understanding of epidemics, the spatial-temporal patterns of cholera diffusion offer opportunities for studying regional change in modern Japan. By highlighting the dynamics of regional reorganization, our findings can be used to better understand the formation of an urban hierarchy in late nineteenth century Japan.Researchers from different disciplines are showing a growing interest in disease and its geographical effects, with studies focusing on the value of detecting spatial concentrations of disease, isolating processes that result in disease hot-spots, and analyzing the space-time dynamics of disease diffusion. A strong example of recent advancements in this area is [2] work on the geographical structures of international epidemics, resulting in models of how epidemic diffusions move through communities, regions and countries. The term geographical structures refers to the patterns and features of human-environment interactions in specific locations. In medical geography, studies of the geographical structures of disease emphasize diffusion and analyses of individual disease factors [8].Regarding cholera, the most serious global epidemic in the nineteenth century, several research teams have gathered evidence showing that its diffusion was dominated by geographic factors (see, for example, [3-6]). Since diffusion primarily occurs via survivors who transport a disease from
Biomechanical Properties of Porous Titanium with Different Surface Characteristics Used for Soft-tissue Anchorage

WU Yao,LI Hu,DENG Chun-Lin,YANG Bang-Cheng,ZHANG Xing-Dong,

无机材料学报 , 2005,
Abstract: In order to resolve the biological sealing of the percutaneous devices for a long time, porous titanium with three-dimensioned scaffold and suitable surface micropores were chosen for fixation the subcutaneous soft tissues. Bone-like apatite was firstly precipitated on the surface of the porous Ti in vitro, and the bare surface as control. All of the samples were implanted into the back of the rabbits subcutaneously. At 40 days and 70 days postoperation, the samples with the surrounding soft tissues were harvested and experienced biomechanical tensile testing. After that, the tensile testing sections were observed by SEM-EDX to analyze the situations of the tissues contacted with the different surface of the materials. The results demonstrate that all of tensile strength of the bone-like apatite coated porous titanium is bigger than that of the control group, and the bonding state at the interface of the materials/tissue is firmer than that of the control. When the samples implanted in vivo, the bone-like apatite coating precipitated in advance in vitro is efficient to the formation of the active cell/materials interface, which is beneficial for the ingrowth of the fibrous tissue and formation of the tight bonding between the tissues and materials.
Progress in Regulation of Rice Wx Gene Expression

SUN Ye-Ying,L Yan,DONG Chun-Lin,WANG Ping-Rong,HUANG Xiao-Qun,DENG Xiao-Jian,

遗传 , 2005,
Abstract: 水稻Wx基因编码颗粒结合淀粉合成酶(GBSS),是控制直链淀粉合成的主效基因.文中主要从转录水平和转录后水平介绍水稻Wx基因表达调控的研究进展,同时介绍转基因、遗传背景以及环境温度对Wx基因表达的影响,并提出Wx基因表达调控研究中一些期待解决的问题.
The Study on Estimation of Vegetation NPP of Xiaerxili Nature |Protection Area Based on RS

MA Chun-lin,

遥感技术与应用 , 2008,
Abstract: This article take the vegetation net primary productivity NPP remote sensing estimation and the analysis as the research content, take the geographical and ecological knowledge as the foundation, uses the RS, GIS technology method, comprehensived the multiple source informations as remote sensing spectrum data, the DEM data, the statistical data, the locating point measured data and so on, have constructed the NPP remote sensing topographical model in, calculates the Xiaerxili nature protection area vegetation NPP in July. Its final goal is to complete Xiaerxili nature protection area vegetation net primary productivity quantitative.
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