Summary
An increasing need for a 3D GIS is observed in many areas in the last several years that challenges researchers and vendors to find a solution for maintenance and analysis of 3D data. Advances in the field of software and hardware development warranty the “luxury” to operate with the third dimension. Based on some recent software achievements, the paper presents a client-server approach for a 3D GIS. The approach permits query and analysis of spatial and semantic information by remote users across the Web. The data are hosted in a DBMS according to a specially designed conceptual schema, which allows storage of geometry, attributes, spatial relationships and behaviour of object. The approach is based on established Web mechanisms to control the access to the database and create documents on the fly. The new aspect is the elaborated employment of VRML for visualisation, query and exploration of 3D data. A GUI on the client site provides the users with means (fill-out forms) to specify SQL queries and visualise 3D outcomes in virtual reality environment. A prototype system and a number of examples validate the proposed concepts.

ABSTRACT
Web-based GIS is increasingly utilized in health organizations to share and visualize georeferenced health data through the Web. In the development of a public information and disease surveillance network, issues of data publishing and user access are important concerns. The handling of data heterogeneity, lack of available data and tools, and methods of health information representation constitute continuing challenges. The purpose of this research is to address these three problems and provide new solutions for health information sharing.

Abstract:

GIS is one of the important sciences in these years. This highlights the importance of spatial factor in decision making in real estate. The purpose of this study is to use GIS to find house to rent simply by applying inquires and to find satisfaction locations. This study focuses on the rent prices in Abu-Dhabi Island. By using web-page browsing, it will help to choose a house that has the biggest weight and ranked the entire selections form most likely match to lowest match. So the user can see the report and select the optimal case that matches their needs. A list of selected range price will be shown to the user to select. A map with colored symbols according to the prices will be generated, and also it shows the targeted buildings that match the user needs. Then the user can choose and judge for the most advantageous case for them. The user can search by price, buildings name, apartment size and number of rooms. This project is one of the GIS applications that could help people in searching for new apartment to live in. For other people such as brokers, they could promote their buildings in the system.

Summary
In the past, mobile communication devices (such as cell phones) have not been utilized in flood forecasting and warning due to limitations in technology that have limited the ability of forecasters to gather and interpret geographical data in near real-time. This paper presents a prototype that integrates a GIS (geographic information system) with a hydrological model. It is a mobile mapping application for J2ME-enabled mobile communication devices that allows those in the flood forecasting, prevention, and related fields to execute programs and run mapping functions from a server using their mobile device. The proposed client-server network application uses mobile devices to connect to a server via the Internet. This study also evaluates the usability of the system using an in-lab tests.