基于元数据和数据集管理的空间数据共享研究   总被引：2，自引：0，他引：2  

牛晓琳  季民  赵志刚 《测绘与空间地理信息》2006,29(3):19-22

以实现地理空间数据的标准化为前提,实现数据共享及发布为目的,指出传统的基于数据集的共享模式存在着弊端,需要建立基于元数据和数据集相结合的管理机制,同时提出了元数据库设计的思想,这对于解决数据共享中的异地、异构存储是有借鉴意义的,该思想可以在数字山东的数据共享中得以实施和应用。  相似文献   

Book Reviews     

《The Professional geographer》1998,50(3):388-406

Boris, Eileen and Prugel, Elisabeth (eds.), Homeworkers in Global Perspective: Invisible No More Chrisman, Nicholas R., Exploring Geographic Information Systems Cox, Kevin R. (ed.), Spaces of Globalization: Reasserting the Power of the Local. Cullingworth, Barry, Planning in the USA: Policies, Issues and Processes Elliott, David, Energy, Society and Environment Hood, Christopher and Jones, David K. C. (eds.), Accident and Design: Contemporary Debates in Risk Management Jones, John Paul, III; Nast, Heidi J. and Roberts, Susan M. (eds.), Thresholds in Feminist Geography: Difference, Methodology, Representation Longley, Paul and Batty, Michael (eds.), Spatial Analysis: Modelling in a GIS Environment Masudpiloto, Felix Roberto, From Welcomed Exiles to Illegal Immigrants: Cuban Migration to the U.S., 1959–1995 Monmonier, Mark, Cartographies of Danger: Mapping Hazards in America Phelps, Nicholas A., Multinationals and European Integration: Trade Investment, and Regional Development Short, Nicholas M. and Blair, Robert W., Jr. (eds.), Geomorphology From Space: A Global Overview of Regional Landforms Sorenson, John L. and Raish, Martin H., Pre-Columbian Contact with the Americas across the Oceans: An Annotated Bibliography Thompson, Gary L., Shelley, Fred M., and Wije, Chand (eds.), Geography, Environment, and American Law Thompson, Russell D. and Perry, Allen (eds.), Applied Climatology: Principles and Practice Williams, Colin C., Consumer Services and Economic Development  相似文献   

地球空间数据元数据标准初探   总被引：33，自引：4，他引：29  

李军  周成虎 《地理科学进展》1998,17(4):57-65

论文首先概要介绍了目前有影响的几个地球空间数据元数据标准,然后从地球空间数据及数据集自身特征出发探讨了数据集元数据的内容,提出了地球空间数据集的层次结构,并给出了基本层和基础层元数据内容。  相似文献   

加拿大爱得蒙顿市犯罪问题的地理研究^*   总被引：4，自引：0，他引：4  

杜德斌 《地理研究》1998,17(4):415-422

运用GIS技术和回归分析方法,分析加拿大爱得蒙顿市各类犯罪的空间分布规律。结果发现：城市犯罪分布的空间差异异常明显,城市内部存在少数极端的犯罪高发区;犯罪的空间分布遵循距离衰减规律,表现为距城市中心越近的地区犯罪发生密度越高,距城市中心越远的地区犯罪密度越低;犯罪发生密度与居住人口密度成正相关,即居住人口密度越高,越容易诱发犯罪,但不同类型的犯罪与居住人口密度的关联程度不一样;不同用地性质的区域犯罪发生密度存在明显差异,在各类用地中,商业区为城市犯罪的高发区。  相似文献   

An internally consistent dataset with uncertainties and correlations: 3. Applications to geobarometry, worked examples and a computer program   总被引：31，自引：4，他引：31  

R. POWELL  T.J.B. HOLLAND 《Journal of Metamorphic Geology》1988,6(2):173-204

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美国国家水文数据综述     

顾纳  周星 《测绘科学》2003,28(4):72-74

美国国家水文数据是美国最新的数字地理空间数据库内容之一 ,是一种基于要素的复合矢量数据产品。美国国家水文数据为数据的增加、删除和改正设计了专门的方法 ,同时还涉及有自动识别和追踪更新数据的功能。介绍了美国国家水文数据的数据源和数据用途 ,分析了其数据特征 ,描述了其独特的数据更新方法 ,可供国内同行设计此类基础地理信息产品时参考。  相似文献   

Local state restructuring and urban transformation in post-apartheid Cape Town     

S. Oldfield 《GeoJournal》2002,57(1-2):29-37

This paper analyzes processes of state restructuring at the scale of the local state and the city, exploring the social and political relationships generated through processes of reconstruction specifically in Elsies River, a formerly segregated `coloured' neighborhood in Cape Town. While the relationship between Elsies River residents and the local state has been characterized by an obsessive focus on housing debt, I examine the ways in which antagonism over housing problems overlie a broader relational disjuncture between neighborhood and state political and social networks. The specificity of this case provides a lens onto the ways in which processes of state restructuring both contest and reinforce racial, economic, and place-based inequalities in South African cities. The paper concludes by using the complexities of local state-neighborhood relationships in the South African case to reflect on geographical theories of state-society relations on a conceptual level. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   

Strong motion dataset of Turkey: data processing and site classification     

Mehdi Zar  Pierre-Yves Bard 《Soil Dynamics and Earthquake Engineering》2002,22(8)

Strong motion records of Turkey are studied in order to prepare a catalog to be used as a database for further studies (for instance empirical attenuation laws). The network started to be installed in 1973, and the first record was obtained in 1976. The instruments are of SMA-1 analog recorders and SIG SM-2 and GeoSys GSR-16 digital types. Out of a total of 426 records released on the web sites of the General Directorate of the Disaster Affairs and of Kandili Observatory, a set of 210 records was selected with a satisfactory quality, for which it was possible to associate correctly determined source parameters (source magnitudes and epicentral distances). Most of the records are obtained from around North and East Anatolian Fault zones, as well as from western and southwestern parts of Turkey. The main outcome of this paper is a strong motion catalog of Turkey, with the indication of site conditions, of the frequency band of the reliability of the records, peak values of acceleration, velocity and displacements, source parameters (magnitude, epicentral and macroseismic distances), intensity and finally the fault plane solutions whenever possible. The aim is to have, with other regional dataset, a homogenous and good quality dataset.  相似文献   

Getting Away with the Stolen Vehicle: An Investigation of Journey‐after‐Crime*     

Yongmei Lu 《The Professional geographer》2003,55(4):422-433

Analyses of criminals' travel patterns can provide significant suggestions to improve crime management. This study extends the investigation of criminals' travel behavior from journey‐to‐crime to journey‐after‐crime. Moreover, new methods are developed to examine the spatial patterns of location pairs when restricted by the underlying geographical process. The methods are employed to investigate criminals' journey‐after‐auto‐theft in the city of Buffalo, New York. The analyses reveal that auto thieves' trips from vehicle‐theft locations to the corresponding vehicle‐recovery locations are local in nature. The travel distances are significantly shorter than the randomly simulated trips; the travel directions are biased from the random directions as well.  相似文献   

运用ArcGIS Desktop 9.0进行栅格数据的加载和地理参考变换     

魏义长  白由路  黄绍文  顾继光 《测绘与空间地理信息》2006,29(4):17-21

运用ArcGIS Desktop 9.0软件以海丰农场示意图为例,用DGPS进行控制点的测量,从建立坐标文件数据开始,把扫描的农场示意图(栅格图形数据)进行加载到地图中去并对其进行地理参考转换,使海丰农场示意图变成了一份具有地理坐标系统的数字化地图,从而为当前海丰农场精准农业研究提供了数字化的农场布局资料。  相似文献