نتایج جستجو برای: geographic information systems gis

تعداد نتایج: 2172722  

2010
Zhongchao Shi Ryosuke Shibasaki

GIS (Geographic Information System) is widely applied in many scientific domains. However, to keep the database “current” is still a “bottle-neck” which obstacles the application and promotion of GIS techniques and products. In this paper, we start with the analysis of why the updating of database is difficult and what kinds of the problems exist in GIS database updating. The problems are analy...

1996
Bjørn Skjellaug

The objective of this technical report is twofold. It gives an introduction to the notions and operationalization of time and temporal data in the context of data modeling and databases. The more philosophical aspects and conceptions of time is not discussed herein. Secondly, we introduce the previously presented time and temporal concepts in the realm of Geographic Information Systems (GIS), o...

2015
S. Senthil Kumar S. Arivazhagan N. Rangarajan

Remote sensing and Geographic Information System play a pivotal role in environmental mapping, mineral exploration, agriculture, forestry, geology, water, ocean, infrastructure planning and management, disaster mitigation and management etc. Remote Sensing and GIS has grown as a major tool for collecting information on almost every aspect on the earth for last few decades. In the recent years, ...

2005
Ibrahim HABLI

Several surveys have shown that about 80% of data in local governments and utility companies are geographical and 1.5% to 2% of the annual budget of such sectors is spent on collecting geographic information. Therefore, such reliance on geographic information has necessitated the development of high quality Geographic Information Systems (GIS) with system qualities such as performance, availabi...

2004
Miguel Rodríguez Luaces Nieves R. Brisaboa José R. Paramá José Ramon Rios Viqueira

Geographic information systems (GIS) are becoming more usual due to the improved performance of computer systems. GIS applications are being developed using the three-tier software architecture traditionally used for generalpurpose information systems. Even though this architecture is suitable for GIS applications, the special nature and exclusive characteristics of geographic information pose ...

2015
MARLEI POZZEBON SONIA TELLO ROZAS Charles Kirschbaum

This paper seeks to understand the use and the consequences of Participatory Geographic Information System (PGIS) in a Mexican local community. A multilevel framework was applied, mainly influenced by two theoretical lenses – structurationist view and social shaping of technology – structured in three dimensions – context, process and content – according to contextualist logic. The results of o...

2002
Robert A. Johnston Shengyi Gao

We review urban models useful in transportation planning, focusing especially on ones that are based on geographic information systems (GIS) software. We then describe UPlan, a simple model written by us in the ArcView GIS. Several different applications of UPlan are outlined, involving transportation planning and the analysis of the growthinducing effects of new facilitites, to demonstrate its...

2017
Alenka Poplin Linda Shenk Caroline Krejci Ulrike Passe

The main goal of this paper is to present the conceptual framework for engaging youth in urban planning activities that simultaneously create locally meaningful positive change. The framework for engaging youth interlinks the use of IT tools such as geographic information systems (GIS), agent-based modelling (ABM), online serious games, and mobile participatory geographic information systems wi...

2005
Alenka Krek

One of the most important goals of public participatory geographic information systems (PP GIS) is to improve citizen’s participation in planning processes. Does this really happen? Unfortunately, very little empirical research exists which would testify or falsify this hypothesis. In the process of trying to involve the citizens in the planning processes, we observe the effect of rational igno...

2003
Manfred M. Fischer

Both geographic information systems (GIS) and network analysis are burgeoning fields, characterised by rapid methodological and scientific advances in recent years. A geographic information system (GIS) is a digital computer application designed for the capture, storage, manipulation, analysis and display of geographic information. Geographic location is the element that distinguishes geographi...

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