基于SuperMap 3D GIS的白云国际机场设备设施管理应用     

罗军 《测绘与空间地理信息》2017,40(Z1)

过去,归属于重资产行业的白云机场,在设备设施资产管理过程中一直存在问题.当下,借助SuperMap 3 D GIS应用技术构建的设备设施地理信息应用系统,将逐步解决其管理的弊端,让机场的日常运行管理更为顺畅,权责更加清晰明了.  相似文献   

SVOM: a Joint Gamma-ray Burst Detection Mission     

《Chinese Astronomy and Astrophysics》2020,44(2):269-282

SVOM (Space-based multi-band astronomical Variable Objects Monitor) is an international cooperation project led by the Chinese National Space Agency (CNSA) and the Centre National d’Etudes Spatiales of France (CNES). SVOM focuses on the detection of Gamma-ray bursts (GRBs). It is developed by the Chinese Academy of Sciences (CAS), CNES, and several other French laboratories. With the multi-band observation, fast manoeuvrability, flexible operation, and the capability of ground follow-up observation, the SVOM project will be the most important GRB detection mission after the SWIFT project, and will open a wide exploration field. In this paper, the project management, science objectives, the satellite platform and payloads, the ground segment, and operation concept are illustrated.  相似文献   

Geometry of scour hole around, and the influence of the angle of attack on the burial of finite cylinders under combined flows     

Yovanni A. Catao-Lopera  Marcelo H. García 《Ocean Engineering》2007,34(5-6):856-869

Experiments were conducted to investigate the geometry of the scour hole and flow structure around short cylinders under the action of waves alone (WA) and combined flows (CF). The study is aimed at better understanding the dynamics of isolated objects on a sandy floor under oscillatory flows as occurs in shallow water regions in coastal areas. Flow velocities within the fluid core were recorded and 3D mapping of the bottom was performed with sub-aquatic acoustic sensors. Experiments were conducted for cylinder Reynolds wave number and Keulegan-Carpenter number within the ranges 10⁴R_e1.7×10⁵ and 2KC71, respectively. The present experimental evidence shows that the geometric characteristics of the scour hole (length and width) depend primarily on the Keulegan-Carpenter number (KC) and the cylinder aspect ratio (a_r=L_c/D). The effect of variation in the angle of attack of the flow with respect to the cylinder main axis was also investigated. Initial orientations of zero and ninety degrees were found to be stable while cylinders with intermediate initial orientations tended to orientate their main axes perpendicular to the flow direction. The final angle of orientation was found to be primarily a function of the Shields parameter, θ, and the initial angle of attack, α_i.  相似文献   

河南省地名数据库的构建方法研究     

刘彬  刘建忠  刘宏建 《地域研究与开发》2012,31(2):141-144,149

河南省地名数据库是国家地名数据库的重要组成部分。介绍了河南省地名数据库建立的背景,按照国家标准要求建立了分布式的省、地市、县三级数据库,并以此为出发点,系统论述了河南省地名数据的分类方式与组织方式,描述了河南省地名数据库的逻辑构成与物理构成;论述了地名数据库建库的基本技术,包括基于元数据的建库方案与基于SuperMap的空间数据库技术。河南省地名数据库的建立充分考虑了城市地名服务的特点与要求,在民政服务信息化方面做了有益的尝试。  相似文献   

Blazar天体的辐射特性研究     

郑永刚  杨卫国  张皓晶  张雄 《天文学报》2007,48(4):418-427

收集了47个Blazar天体的短时标光变资料,估算了中心天体质量和不同波段辐射区域,并对估算结果作了统计分析,发现Blazar天体中心黑洞质量在10~7M_☉到10~(10)M_☉之间,BL Lac天体与平谱射电类星体中心黑洞质量有很大差异,平谱射电类星体中心黑洞质量大于BL Lac天体中心黑洞质量;红外波段和γ射线波段辐射区域大小相似.同时,利用收集到Blazar天体的热光度分析了Blazar天体热光度与短时标光变之间的关系,证实了射电选BL Lac(RBL)天体和平谱射电类星体(FSRQs)的辐射是强成束的,但相对论聚柬效应对X射线选BL Lac(XBL)天体的辐射影响较小.  相似文献   

GIS技术在动物疫病防控中的应用     

李万辉  刘延宏 《地理信息世界》2007,5(4):69-72

数字畜牧是动物卫生领域的重要发展趋势。本文着重讨论GIS技术在动物疫病防控中的应用,并以辽宁省畜禽分布定位及重大动物疫病防控调度指挥系统的建设为实例提出基于SuperMap GIS平台构建动物疫病防控系统的解决方案,从而为我国畜牧业信息化建设提供参考。  相似文献   

基于SuperMap的公路工程地理信息平台研究     

冯永玖  童小华  刘妙龙 《测绘与空间地理信息》2008,31(1):12-16

在研究公路交通地理信息系统(GIS-T)建设现状的基础上,提出了基于GIS组件SuperMap Objects的公路工程地理信息平台。从公路工程规划、设计、建设和管理过程中所涉及的各种数据和资料及现实需求出发,探讨了平台系统总体结构、数据库设计和系统功能设计,研究了系统开发中数据的组织与动态分段等关键技术。以广东省公路工程地理信息平台为实例,介绍了系统的功能和应用,实践了文中提出的技术和方法。  相似文献   

Meeting Report     

Steel  D. I.  Bailey  M. E. 《Earth, Moon, and Planets》2000,88(3):177-183

This report summarises a Royal Astronomical Society (RAS) Specialist Discussion Meeting held on 2001 December 14 in the rooms of the Geological Society, Burlington House, London. The meeting was well attended, with approximately 100 Fellows and guests being present, and attracted considerable interest from the media. Two associated talks, given byinvited international speakers, were also presented as part of the mainRAS Astronomy & Geophysics Meeting held the same day at the Scientific Societies' Lecture Theatre in Savile Row, as reported below in closing this summary. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   

基于GIS的地层剖面图形生成技术     

高明忠  谢和平  李洪  董建华 《岩土力学》2006,27(10):1791-1794

为了清楚地展现地下岩体结构,如裂隙、节理、层理、断层等不连续的结构面,在Visual Basic 6.0平台下对建立在OCX技术基础上的GIS(地理信息系统)功能组件MapObjects进行了集成二次开发,把三维数据结构边界表示法和三维栅格结构有机的结合,以三维栅格结构为主体,力求以最小的数据量表示更为真实的地下结构。改进后的三维栅格结构法实现了对区域平面地质图图层的放大、缩小、漫游以及地下剖面生成,并可以把生成剖面以多种格式输出以进行稳定性分析,成功应用该系统对四川省紫坪铺水利枢纽工程水库两岸重点库段进行了地质建模,有效地指导了该地区的滑坡治理和213国道的改线工程。  相似文献   

矿山开采沉陷地表移动观测站的设计与实现     

朱黎明  吴捷  于雪涛  魏庆伟 《测绘与空间地理信息》2014,(3):96-99

合理地设计地表移动观测站,是准确预测矿山开采沉陷引起地表移动、变形的基础。本文分析变形观测站设计方法,对该方法做了详尽剖析。结合淮南矿区的地质以及地表综合条件,设计适合淮南地区地表移动变形观测站设计的算法模式,并采用VB和MapObjects进行了实现。最后,以淮南市潘北矿区地表移动观测站设计为实验对象,结果表明:采用软件设计的地表移动观测站,能够有效反映沉陷区特征,且具有高效、可视化特点。  相似文献