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51.
This paper presents a task‐based and Semantic Web approach to find geospatial data. The purpose of the project is to improve data discovery and facilitate automatic retrieval of data sources. The work presented here helps create the beginnings of a Geospatial Semantic Web. The intent is to create a system that provides appropriate results to application users who search for data when facing tasks such as emergency response or planning activities. In our task‐based system, we formalize the relationships between types of tasks, including emergency response, and types of data sources needed for those tasks. Domain knowledge, including criteria describing data sources, is recorded in an ontology language. With the ontology, reasoning can be done to infer various types of information including which data sources meet specific criteria for use in particular tasks. The vision presented here is that in an emergency, for example, a user accesses a Web‐based application and selects the type of emergency and the geographic area. The application then returns the types and locations (URLs) of the specific geospatial data needed. We explore the abilities and limitations of the OWL Web Ontology Language along with other Semantic Web technologies for this purpose. 相似文献
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James A. Tyner 《The Professional geographer》1998,50(3):331-344
International labor migration is produced and patterned through the activities of government and private institutions, such as labor recruiters and government officials. Recently, labor recruitment agencies have utilized the World Wide Web as a means of facilitating the procurement of foreign employment contracts. The purpose of this research is to examine the institutional usage of the Web as a means to facilitate the global flow of labor. Based on a qualitative assessment of 27 recruitment-related Web sites, I suggest that Web-based recruitment reinforces global patterns of gendered, racial, and occupational segregation. Moreover, Web-based recruitment offers the potential for revolutionizing patterns and processes of international labor migration. 相似文献
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与WWW技术结合是GIS发展的必然趋势 总被引:4,自引:0,他引:4
本文介绍了GIS和WWW,对GIS与WWW相结合的必要性,实现办法以及展望进行了阐述。 相似文献
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简要介绍了Google Maps JavaScript API技术,并着重阐述了其作为主流的WebGIS技术在船舶自动气象站监控页面设计中的应用,包括:通过JavaScript和AJAX技术请求远程数据服务器获取气象数据、状态数据及GIS信息等,并将返回的JOSN格式数据加载到Google Map上,同时通过Google Maps JavaScript定制化船舶图标并对加载的船舶轨迹进行渲染,使用户需要的监控信息更加直观地显示在监控页面上。本文结果已成功应用到广东省气象局设备全网监控系统之中。 相似文献
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This paper explores the lived experiences and aspirational social constructions of call centre work and employment in India’s high profile IT Enabled Services-Business Process Outsourcing (ITES-BPO) industry; the ways in which they differ from those previously documented amongst call centre workers in the Global North (specifically the UK); and the consequences of that geographical reconfiguration of offshored call centre work for the replicability in India of workplace collective bargaining strategies successfully developed in some UK call centres. These issues are analysed using new empirical evidence from a regional survey of 511 non-unionised ITES-BPO workers and 42 in-depth interviews in India’s National Capital Region. Based on this analysis, the paper then discusses the operation, outcomes and ongoing challenges faced by the newly formed ‘Union for ITES Professionals’ (UNITES Pro) in developing an alternative occupational organising model better suited to the particular needs, motivations and preferences of India’s young, mobile, call centre workers. The empirical analysis presented in the paper is located, therefore, within wider debates on the role of geographical context in shaping possibilities for organising white-collar service workers at different ends of global service chains in the new economy. 相似文献
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本文研究了应用VSAT技术建立大震现场紧急通讯系统的设计和实施方案,规定了该系统应实现的功能。在此基础上,提出了建立我国未来陆地地震救灾移动卫星通讯计划,并对一些关键技术和为移动用户可能提供的通讯业务进行了讨论。 相似文献