智慧城市中的大数据

智慧城市的功能之一是构建可智能感知的、泛在化的空间信息服务,并将这些服务按需求进行组合提供灵活的服务,这就要求空间信息服务能更好地适应不断变化的地理上下文环境。设计了上下文感知的空间信息服务的语义模型,该模型扩展了OWL-S本体,增加了地理上下文类、上下文前提条件类、上下文效果类和上下文绑定类以支持地理上下文和地理上下文适应性,并使用智能规划技术和语义增强技术,将上下文感知的空间信息服务组合转化为智能规划的求解过程,提高了服务组合精度。最后通过智慧旅游验证了上下文感知的空间信息服务组合方法的可行性和有效性。     

面向GeoData Service的矿产资源规划信息服务系统

 通过对当前矿产资源规划信息化建设现状,以及GeoData Service技术特征和优势的基础上,提出面向服务理念架构3层B/S模式的矿产资源规划信息服务系统。着重对系统的逻辑结构、空间数据库、系统功能进行了详细设计,并对封装了矿产资源规划成果数据的GeoData Service服务的构建要点、处理方法及该种处理方法的技术优势进行了阐述;同时给出了在Dotnet框架下,采用ArcGIS Server.NET ADF开发技术,开发实现的矿产资源规划信息服务系统的运行实例。最后,剖析了Web ADF异步回调技术、基于JavaScript的Web动态导航技术、ADO.NET数据访问技术、系统性能的整体优化方法等关键技术在系统中的具体实现。系统运行表明,矿产资源规划信息服务系统为矿产资源规划信息化建设领域系统建设的架构方式从Web GISystem到Web GIServices的转变及矿产资源规划成果数据信息的同步更新与管理、远程提取、网络分布式共享拓展了一种新的应用模式。     

湖北省水土保持动态监测Web GIS系统的设计及实现

利用Web GIS技术建立大区域的水土保持动态监测系统需要解决海量数据处理与显示、多源数据集成、大型数据库支持、桌面地图排版与专题图制作等技术问题，这里介绍的“湖北省水土保持动态监测Web GIS系统”有效地解决了建立实用型水土保持动态监测Web GIS系统所面临的一些共性问题。     

图书情报资料工作在测绘教育中的地位与作用

学校图书馆是图书资料的供应与服务基地 ,其藏书量与藏书类别的多少 ,以及图书馆各专业情报资料源的数量与管理和服务水平 ,是办学条件的重要标志之一 ,因而 ,测绘图书情报资料的信息源建设、测绘科技文献的开发与利用和测绘科技情报资料为师生的服务 ,在测绘教育中有着举足轻重的地位与作用。     

Web-based application for estimating water quality impacts due to environmental dredging

A Web-based dredge plume simulation software has been developed for estimating sediment transport and contaminant release from dredging operations. This application software comprises a near-field source model and far-field sediment transport model, combined with the settling analysis of flocculent particles. It is designed to run on all computing platforms with a standard Web browser and is accessible over the Internet. This paper describes its internal software structures and the major features of the application software. In addition, an example application of sediment transport in the Savannah River, GA, is included to illustrate typical input and output screens and to demonstrate the accuracy of the model. The water quality assessment software developed herein will greatly enhance the ability of the predictive tool for estimating sediment transport and resuspension during dredging operations.     

Internet与我国旅游业

旅游业在Ｉｎｔｅｒｎｅｔ上开展商务活动,将引起传统运作模式的重大变革。我国地域辽阔,旅游资源丰富,利用这些独特的资源在Ｉｎｔｅｒｎｅｔ上建立优质的面向世界的旅游业网站,并走联合经营之路,将为我在的发展和我国经济的腾飞做出重大贡献。     

天文观测科学实践中心技术实现

天文观测科学实践中心是一个以天文观测为核心的网络实践体验中心,以网站的形式向公众提供服务。网站建设使用HTML、CSS、JavaScript和JSP/JaveBean等技术;基于B/S结构实现望远镜远程控制;采用Windows Media技术实现视频发布。建成的网站为用户提供了全新的天文观测实践体验机会,达到了传播天文知识的目的。     

西南三省山地剖面气象资料管理服务系统

利用云、贵、川三省主要山系哀牢山、大娄山、大巴山的２５个山地剖面气候站点，自１９８７－２１－１９９０．２－２８，１９个气象要素的逐日观测资料，首次建立了西南三省山地剖面气象资料管理服务系统。系统具有资料管理、气候统计分析、资料比较等功能，适于科研、气候资料业务管理应用．     

Trust in Web GIS: the role of the trustee attributes in the design of trustworthy Web GIS applications

Since the introduction of Xerox PARC Map Viewer, there is a high growth in the number of Web GIS (Geographical Information System) applications for public use in different contexts. These applications instruct, advise and provide the tools for spatial analysis to their users, and the people who use them depend or rely on these systems. Many of these users are non-experts who have no GIS expertise and a limited understanding of spatial data handling. These inherent characteristics of non-expert interaction establish risk and uncertainty, which are further increased due to the complexity of Web GIS interfaces. These issues of uncertainty, risk perception and dependence are all trust-related aspects. Online trust has been repeatedly identified as a major concept for online information systems and its value recognised as it influences the intentions to use and the acceptance of online systems and the overall user experience. However, there is a very limited understanding as to exactly how trust is constructed when people, especially non-experts, interact with Web GIS. To improve knowledge in this domain, this article explores the theoretical foundations on how trust can be investigated in this context. Trust studies (mainly from the e-commerce domain) suggest that a trust-oriented interface design may improve the trustworthiness of online systems, and such attention can be given to Web GIS interfaces. Such studies are reviewed and their applicability is considered in the Web GIS context, taking into consideration their special characteristics. A case study is used to discuss how some features may potentially influence the trustworthiness of Web GIS applications. This article concludes by suggesting future research directions for the implementation of a holistic approach, which is necessary to investigate trust in this context.     

Asian Labor Recruitment and the World Wide Web

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.