Geographic Information System (GIS) based on Internet is a promising research field, which brings new approaches to access, share and disseminate geographic information. However, current Internet-based GIS relies heavily on centralized server, which inevitably has drawbacks such as single points of failure and network congestion etc. In recent years, Peer-to-Peer (simply P2P) and Web services a...

Web GIS based applications and systems are becoming popular with the advancement of internet and related technologies and efforts of the open source community. Planners and decision makers are seeking web GIS based solutions as they are efficient at satisfying the needs of users in terms of availability of associated collateral information. The standards and specifications developed by the Open...

This paper introduces a Web Mapping system, UrMap, which incorporates new approaches for integrating GIS layers and Remote Sensing Imagery. UrMap is an on-line location-based service (LBS) website developed by OleMap Inc. in collaboration with the FORMOSAT-2 Image Application Distribution Center at National Taiwan Normal University and the National Space Organization (NSPO) in Taiwan. The goal ...

This study, focusing on the importance of encouraging outdoor activities for children, aims to propose and implement a Web-GIS based outdoor education program for junior high schools, which will then be evaluated by users. Specifically, for the purpose of improved outdoor activities in the junior high school education, the outdoor education program, with chiefly using the Web-GIS that provides ...

We have developed a framework for Web-based GIS/database applications which allow users to insert, update, delete, and query data with a map interface displayed by Web browsers. The framework was designed so that a Web-based GIS application that uses ArcIMS as a map server can be easily created, customized, and maintained. In order to achieve this goal, we have created our framework as a collec...

The GIS web portal usually functions as a web-based gateway to integrated and distributed geographic resources. Although current GIS web portals are gaining popularity among GIS users and are of great significance for building distributed Internet GIS, they remain weak in terms of analytical and modeling components. We discuss the possibilities of integrating state-of-the-art technologies which...

Web services have been developed and deployed for GIS applications. Client-server interaction in such applications is limited by the service provider, such as ArcWeb Service. This paper will discuss the needs from service requester which lead to the exploration on the design and manipulation of Web Service interface. It is likely that GIS Web Service promotes the separation of spatial feature a...

Mobile Geographical Information System (Mobile GIS) is a Geographical Information System based on mobile computing and mobile Internet. It is not a conventional GIS modified to operate on a smaller computer, but an extension of Web GIS to mobile Internet including wireless Internet/Intranet and mobile communication network. But architectures of Web GIS are unsuitable for Mobile GIS, because of ...

Web GIS (Geographic Information Systems) service systems provide the various GIS services of analyzing and displaying the spatial data with friendly user-interface. But, early systems don’t support open environment and interoperability. It is difficult to access diverse data sources, which provide each spatial data format. And, these systems have the difficult of upgrading the function and redu...