The development of temporal GIS systems capable of dealing with the evolution of geographical objects is still a challenging task. Although many successful GIS systems have been implemented, comparatively little has been done on how to determine and analyse the patterns of continuous changes of geographical objects. The aim of this paper is to construct a GIS system using an object-oriented mod...

The research presented in this paper introduces a user context approach for collaborative and adaptive Geographical Information System (GIS). The proposed model is part of a framework based on a multi-dimensional contextual approach that combines user, geographical and device contexts. The spatial properties of the GIS components categorize different configurations as a support for the derivati...

Passive Coherent Location (PCL) requires detailed knowledge about the geometric transceiver-receiver-constellations and the technical parameters for simulating the effective field of view. Geographic Information Systems (GIS) provide tools to fuse spatial information with technical metadata to evaluate individual geometric constellations and obtain optimal radar coverage. This paper presents a ...

The weighted linear combination (WLC) technique is a decision rule for deriving composite maps using GIS. It is one of the most often used decision models in GIS. The method, however, is frequently applied without full understanding of the assumptions underling this approach. In many case studies, the WLC model has been applied incorrectly and with dubious results because analysts (decision mak...

1. INTRODUCTION Models provide a way to understand and predict the behavior of natural systems. Ocean-atmosphere models such as the Regional Ocean Modeling System (ROMS) are intended to provide a multipurpose , multidisciplinary oceanic modeling tool. Fisheries models provide ways to study simplified versions of complex ecosystems. While models provide greater understanding, the results can be ...

Abstract: This paper presents the methodology and procedure for flood risk assessment using GIS and flood inundation model (FIM) based on the “micro-zonation concept” in which an entire floodplain considered is divided into numerous unit areas (meshes or grids). In this study, Shinkawa-river floodplain around Nagoya City of Aichi Prefecture in Japan an urbanized lowland area, which was greatly ...

Generalization is perhaps the most intellectually challenging task for cartographers. It has proved to be very difficult to automate. In this paper, a cell-based model is applied to GIS generalization, which represents a new methodology within the GIS context. Cellular Automata (CA) has found a place in many interesting real world applications, including the modeling and simulation of numerous ...

The ceaselessly increasing number of trips on urban highways and major arterial roads have caused serious congestion and air pollution problems. Thus many transportation agencies have persevered in their efforts not only to alleviate such problems, but also to minimize social costs. However, the complex nature of such problems has strongly hindered transportation agencies’ ability to consider a...

GIS (Geographic Information Systems) are concerned with the manipulation and analysis of spatial data at a “Geographic” scale. Apart from issues of storage, database query and visualization, they must deal with several significantly different types of spatial information. These may be roughly classified as: discrete objects; networks; polygonal maps; and surfaces. Each of these has a specific s...

This paper presents a model for quantitative risk analysis with the application of geographic information systems (GISs) using Bayesian theory. It was used for the thematic integration of maps in a natural state (vegetation, geological-geotechnical, natural drainage and gradient). A landslide susceptibility map was produced based on this integration associated with vulnerability data (time and ...