The advantages of ‘Distributed GIS’ have long been realised by GIS practitioners and researchers, for its strengths of system flexibility, reliability, scalability, processing efficiency and resources sharing. However, due to the complex network architecture and software structure, current distributed GIS (DGIS) still cannot fully accommodate distributed, heterogeneous and speedy development in...

The foundation for the development of GIS throughout a local government is cadastral GIS applications. The applications need to maintain the cadastral data known as the tax assessment role, to evaluate land values including buildings and physical structures. Because the current 2D Cadastre systems with 3D visualizations (ArcScene) is a framework to support comprehensive land-related information...

the paper discusses the use of modern information technologies, and in particular geographic information systems (gis), in the management and control of major accident risk. for this purpose, the regulatory framework of the recent “seveso ii” directive is briefly described. the referencing in space of the phenomena may be defined in terms of a geometrically exact or a relative location. the for...

Automatic change detection and updating road networks is a key work for updating geo-spatial information especially in developing countries. Old GIS data can make road networks detection and extraction easier. However, detailed strategy and algorithms of automatic change detection for road networks based on GIS is not discussed in detail. Aiming at this, a strategy for automatic change detectio...

This paper presents the essential temporal data constructs necessary in providing solutions for transportation applications that use dynamic data, such as facility management systems, safety and incident management, transportation planning, emergency management, and intelligent transportation systems. These temporal data constructs are categorized as time stamps, temporal topology and temporal ...

Current methods of remotely sensed image change detection almost assume that the DEM of the surface objects do not change. However, for the geological disasters areas (such as: landslides, mudslides and avalanches, etc.), this assumption does not hold. And the traditional approach is being challenged. Thus, a new theory for change detection needs to be extended from two-dimensional (2D) to thre...

This paper discusses the design of formal theories of geographic space for the application in Geographic Information Systems. GIS software is an implementation of formal theories of geographic space. The notions of formal theories are introduced and discussed in the context of examples from the GIS ®eld. Our approach is an application of the general framework of formal theories to the special c...

Information technology can play an important role in helping the elderly to live full, healthy and independent lives. However, elders are often overlooked as a potential user group of many technologies. In particular, we are concerned with the lack of GIS applications which might be useful to the elderly population. The main underlying reasons which make it difficult to design usable applicatio...

Land use/land cover (LULC) changes have become a central issue in current global change and sustainability research. Saudi Arabia has undergone significant change in land use and land cover since the government embarked on a course of intense national development 30 years ago, as a result of huge national oil revenues. This study evaluates LULC change in Makkah and Al-Taif, Saudi Arabia from 19...