基于RIA地理信息共享平台的运维系统研究

运维系统是保证整个地理系统共享平台正常运行的重要组成部分,具有业务流程复杂,数据交互需求大等特点,由于基于B/S模式的传统Web应用程序在页面交互、数据可视化、传输效率等方面弱点制约其在运维系统中的应用,本文引入RIA技术有效解决上述问题。研究了RIA基本原理及应用可行性,并设计了基于该技术的Web应用程序结构模型。最后通过系统的实例运行,表明基于RIA的运维系统具有良好的性能。     

动态电子商务浅析

Internet促进了电子商务飞速发展,B2B模式的企业级电子商务要求动态电子商务的应用。动态电子商务着重程序对程序的交互作用,实现应用程序之间的集成。动态电子商务实现的关键是Web Service,它不仅已作为动态电子商务的基础,也是"电子商务随需应变"技术发展的基础。     

Web地图服务的集成共享研究

Web服务技术为GIS空间数据的互操作提供了全新的、有效的解决途径，越来越多的GIS软件支持OGC Web服务规范。如何在单个应用程序中集成多个服务器上的Web地图服务是本文要解决的核心问题。首先阐述了本文的研究意义，然后对OGC Web地图服务及开发所采用的主要技术分别作了介绍；提出了Web地图服务集成共享平台的体系结构和相应的功能设计，并利用Servlets、JSP、JavaScript等技术对其进行了初步实现。     

基于Web Service的Web地图服务设计与实践

集成和互操作一直是GIS发展的热点问题,而在互联网时代背景下产生的Web服务(Web Service)技术为GIS的集成和互操作提供了全新的、有效的解决途径。在介绍和分析Web服务技术的基础上,提出并实践了一种将地图服务的基本功能包装成Web服务进行发布的思路。通过将GIS的基本功能包装成Web服务,可以实现使用一种标准的协议来实现各GIS应用系统的交互和集成,屏蔽了系统间软、硬件平台的不同。     

基于ASP.NET的地理信息Web服务研究

ASP.NET是网站和XML Web服务的产物,是.NET框架中的核心要素。论文探讨了基于ASP.NET框架的地理信息Web服务(GI Web service)的实现原理,提出了服务体系软件架构,就应用服务器端组件设计、服务器端Web自定义组件设计等关键技术问题进行了深入分析,实现了一个Web服务原型系统。该原型系统经在校园网上测试,表现出良好的稳定性和较高的效率。     

基于Flex Viewer框架的商务资源信息管理系统的研究

富互联网应用程序技术以其出色的表现力、强大的交互能力、可靠的安全性以及与现有系统集成的方便性备受用户喜爱。本文对Flex Viewer结构框架进行了深入的研究,然后在此基础上提出了某市商务资源信息管理系统的框架设计方案,并对系统进行了开发实现;此外通过引入缓存地图服务提高系统的效率,结果表明利用Flex技术开发的Web GIS应用效果非常理想。     

基于ISB的地理信息服务系统研究

ISB（Internet服务总线）技术提供了构建网络化的地理信息服务系统平台的基础设施,基于ISB实现配置活动模板的Web应用程序,普通用户通过操作模板即可定制出满足自己需求的应用程序;开发人员也可以通过ISB利用来自网络的丰富的数据和功能服务,结合自已开发的业务流程快速实现应用程序的构建。基于ISB的地理信息服务系统实现了广泛的数据和功能共享、简捷、扩展性强、用户需求驱动的应用程序构建方式,使地理信息技术的应用领域和用户都将更加广泛。     

基于ArcGIS的动态路径诱导系统研究

在分析中心式动态路径诱导系统、ArcGIS、Web服务和GIS Web服务等关键技术的基础上,设计了基于ArcGIS的动态路径诱导系统方案和仿真系统的总体框架,并对系统采用的方法、技术进行分析和研究。     

Freehand地图数据在Web上使用

Freehand地图数据是面向出版系统的,本文主要介绍利用Macromedia公司另两个软件Flash、Dreamweaver开发Freehand数据,将Freehand格式的地图发布在Web上,并且利用Dreamweaver设计Web应用程序,以动态显示和管理要访问的地图数据库。     

Web目录服务在福建省测绘成果分发服务中的应用研究

OGC的Web目录服务规范提供了较为丰富的接口。简要介绍了OGC的Web目录服务及其应用,基于Web目录服务构建了福建省测绘成果目录服务系统,并开发了门户网站,实现了全省测绘成果的一站式查询,最后展望了测绘成果目录服务的应用前景。     

一种基于位置的移动服务系统的设计与实现

基于位置的移动服务需要设计高效、稳定和可扩展的体系结构与开发方式，提出了一种基于Web服务的LBS体系结构（WS-LBS），并设计了WS-LBS系统框架，实现了空间信息服务的构建与发布机制，扩展了终端用户，实现了一个WS-LBS原型系统。     

Spatial mashup technology and real time data integration in geo-web application using open source GIS – a case study for disaster management

The Web 2.0 technologies and standards enable web as a platform by allowing the user participation in web application. In the realization of Web 2.0, new knowledge and services are created by combining information and services from different sources which are known as ‘mashups'. The present study focused on spatial mashup solution for disaster management using open source GIS, mobile applications, web services in web 2.0, Geo-RDBMS and XML which are in the central of intelligent geo web services. The geo-web application is developed to generate the actionable GIS products at user end during disaster event by consuming various data and information services from web and central server system and also real time ground observation data collected through a mobile device. The technological solution developed in this study is successfully demonstrated for disaster management in the Assam State of India during the floods in 2010.     

MapGISK9服务引擎：一种基于云的影像分析功能部署

为了突破桌面软件对地理空间信息应用的限制,本文应用MapGISK9服务引擎,提出了一种新的服务引擎功能,它能够将MapGISK9REST风格的Web服务处理功能作为在线式和按需式影像科学程序提供给地理空间组织机构。针对目前地理空间用户在影像处理方面具有在线式和按需式访问需求的情况,本文借鉴ENVI并利用MapGISK9服务引擎的工程化应用实例,提出了一套客户端一服务器企业架构或云架构的解决方案,以增强态势感知能力。     

空间地理信息网络服务集成框架初探

本文在分析了W eb服务体系结构和OGC相关规范的基础上,提出了空间地理信息网络服务集成框架。框架由空间地理信息服务(提供者)、空间地理信息服务注册处(中介)和客户端(请求者)组成。并利用ESR I的空间地理信息网络服务雏形-ArcW eb,成功构建了一个简单的G IS应用。最后提出了要真正实现成熟的标准框架,还需要解决服务的标准化、空间数据传输以及地图数据显示等问题。     

大地测量Web服务框架及其应用的研究

定位技术的大众化和数据应用的广泛化正让传统大地测量模式悄然改变。本文从分析大地测量信息系统计算模式的发展过程入手,提出了网络环境下大地测量信息服务的总体框架,重点分析了以定位服务、控制点服务和数据服务为核心的服务内容,并对构建服务所要应用的XML、数据标准和元数据三个关键技术进行阐述,最后还对基于框架的大地测量过程进行了研究,实现了基于Web服务技术的大地测量生产和服务,为实现大范围跨系统的大地测量信息集成应用提供就新的技术思路。     

基于ArcGIS API for Flex的Web应用初探

ArcGIS Flex API是ArcGIS在RIA领域的第一个产品,因此选择了最为成熟的Flex/Flash平台,使用ArcGIS FlexAPI可以开发出具有丰富地图功能的互联网应用,包括浏览器中的Web应用或者运行于桌面的AIR应用。主要介绍了ArcGIS Flex API的主要对象和功能组件的使用;如何发布一个基于Rest的ArcGIS Server地图服务;开发时如何调用服务。     

A comparative analysis of routes generated by Web Mapping APIs

Web Mapping APIs (WMAs), such as Google Maps API, are widely used by researchers across different fields to develop geospatial Web applications. Among maps and map functionalities provided through WMAs, route and direction are prominent and commonly available. Given that each WMA uses a different map database and a different set of assumptions, the routes they generate, for the same pairs of origin and destination addresses, are different. Considering the current void in literature on WMAs and the routes they generate, in this paper, select common WMAs are compared and analyzed based on their routing techniques. The results of these comparisons will benefit researchers by helping them better understand the behavior of WMAs in producing routes, which in turn can be used for selecting suitable WMAs for research projects or developing applications (such as navigation and location-based services). The process in which routes are evaluated can also be used as a guideline to help researchers explore behavior of WMAs in generating routes.     

Building GIS web services on JXTA network

In recent years, Web services and Peer-to-Peer (or simply P2P) appear as two of the hottest research topics in network computing. On the one hand, by adopting a decentralized, network-based style, P2P technologies can make P2P systems enhance overall reliability and fault-tolerance, increase autonomy, and enable ad-hoc communication and collaboration. On the other hand, Web services provides a good approach to integrate various heterogeneous systems and applications into a cooperative environment. This paper presents the techniques of combining Web services and P2P technologies into GIS to construct a new generation of GIS, which is more flexible and cooperative. As a case study, an ongoing project JGWS is introduced, which is an experimental GIS Web services platform built on JXTA. This paper also explores the schemes of building GIS Web services in a P2P environment.     

Building GIS web services on JXTA network

In recent years, Web services and Peer-to-Peer (or simply P2P) appear as two of the hottest research topics in network computing. On the one hand, by adopting a decentralized, network-based style, P2P technologies can make P2P systems enhance overall reliability and fault-tolerance, increase autonomy, and enable ad-hoc communication and collaboration. On the other hand, Web services provides a good approach to integrate various heterogeneous systems and applications into a cooperative environment. This paper presents the techniques of combining Web services and P2P technologies into GIS to construct a new generation of GIS, which is more flexible and cooperative. As a case study, an ongoing project JGWS is introduced which is an experimental GIS Web services platform built on JXTA. This paper also explores the schemes of building GIS Web services in a P2P environment.     

Semantic Web and service computation in GIScience applications: a perspective and prospective

Semantic Web and Web services have been two prominent themes in the computer science and IT mainstream for more than a decade. While both of these themes have been evolving, some geographers and GIScientists have been trying to introduce and adopt such new technologies into GIScience research and development. This paper reviews the state-of-the-art and the main constraints of semantic Web and Web services technologies and their applications in GIScience. Unless some fundamental problems within both semantic Web and Web services can be resolved, such technologies will be difficult to match the needs in the GIScience community. Besides logics, more sciences and theories have to be introduced into this research front in order to break through the long-term bottleneck in semantic Web and service computation in general.