GIS is becoming an essential tool for utility companies, especially water companies, which have found an excellent way to manage and assess their assets. This paper presents an ArcView® GIS extension called GISRed, which is a customized application oriented to the task of water network modelling. GISRed is capable of simulating, analyzing and retrieving the actual network status under certain c...

Hong Kong is a highly urbanized city with a very complicated public transport system. Local residents and tourists rely heavily on public transport for everyday travelling. To assist people in making better use of the public transport system, a multi-modal public transport query and guiding LBS system for mobile users is developed. This system can automatically determine the mobile device posit...

Data compression algorithms can be categorized into lossless and lossy. Bit streams generated by lossless compression algorithm can be faithfully recovered to the original data. If loss of one single bit may cause serious and unpredictable consequences in original data (for example, text and medical image compression) lossless compression algorithm should be applied. If data consumers can toler...

Night-market is a special living culture of Taiwan. It is a natural process of spatial development, and presents popular night entertainment of Taiwanese people. The goal of this research is to establish the simulation model to analyze spatial development factors of Taiwanese Night-market. The method is integrated「Cellular Automata」(CA) and 「Artificial Neural Network」(ANN) to experiment spatial...

The need for global access and decentralized management of geographic information is pushing the GIS community to establish an open GIS architecture and provide distributed geographic information services. From an operational perspective, the role of client/server components underlie specification of task-oriented programming, and the modularization of GIS software. Exchange of geographic infor...

rangelands are important for plant productivity, livestock production, wildlife,conservation of soil and water resources, and etc. one of the main problem of rangeland isthat has not been used based on its potential that leads to more degradation of rangelands.the purpose of this study was to evaluate the range management capability of badrehregion in ilam province, iran, using anp (analytic ne...

The study aims at developing a GIS based contamination Risk Assessment procedure in water distribution systems. Water distribution network analysis model EPANET 2.0 was integrated with ArcGIS 8.3 for the water quality analysis retrieving data from the GIS database. Water supply system of Zone VIII of Guntur, India was selected for the case study. The results of water quality simulation were dis...

1082-4006/05/1101-29$5.00 ©2005 The International Association of Chinese Professionals in Geographic Information Science (CPGIS) Abstract Given the decentralized computing environment for managing landscape resources in Shanghai, China, this paper introduces a Distributed GIS application to support a more efficient and effective approach for resource management. Four critical computing issues r...

Combined with the GPRS (General Packet Radio Service) technology, Geographic Information Systems (GIS) extends its abilities from static to dynamic working environment for urban drainage network. In this paper, a framework of Web-GIS for the urban drainage network management system is presented. This three-layer system framework is based on the J2EE technologies. The principles of data structur...