Agent-based simulation is a technology which is being used as a decision support tool for recreation managers to better plan the development of tourist destinations in the face of increasing tourist numbers. Agent-based simulation for national park management is a developing field of research. A number of projects have been undertaken, applying the technology to a range of park scenarios. These...

The development of group sequential methods has produced multiple criteria that are used to guide the decision of whether a clinical trial should be stopped early given the data observed at the time of an interim analysis. However, the potential for timevarying treatment effects should be considered when monitoring survival endpoints. In order to quantify uncertainty in future treatment effects...

1. Introduction The study of geographic information sciences emerges in the last decade as an exciting multidisciplinary domain, spanning such areas as cartography, geography, remote sensing, image processing, and computer sciences. In recent years many new applications of GIS have appeared in different domain and the technology continues to expand at a spectacular rate. This advance is the res...

identifying the change trends in forms of land surface is one of the main topics in geomorphic system. in this view, we try to assess the stability level of geo systems, boundary changes, instability and prediction of surface forms and processes response. this paper tries to conduct a comparative analysis on the geomorphic equilibrium paradigms, critical thresholds, environmental and natural ha...

GEO Satellite imagery is an important tool and can be used to estimate rainfall during the thunderstorms and hurricanes for flash flood warnings in real time. However, for the GEO satellite is located higher than normal LEO satellite, the spatial resolution images are lower. Therefore, in order to obtain an image with enough resolution, some methods are to be implemented in GEO satellite observ...

The availability of geocoded health data and the inherent temporal structure of communicable diseases have led to an increased interest in statistical models and software for spatio-temporal data with epidemic features. The open source R package surveillance can handle various levels of aggregation at which infective events have been recorded: individual-level time-stamped geo-referenced data (...

eurotia ceratoides (l.) c. a. mey is an important plant species in semi-arid landsin iran. new approaches are required to determine the distribution of this plant species. forthis reason, geographical distributions of eurotia ceratoides were assessed using threedifferent models including: multiple discriminant analysis (mda), ecological niche factoranalysis (enfa) and logistic regression (lr). ...

Vehicular Ad Hoc Network (VANET) is a special case of opportunistic network where nodes are moving vehicles communicating together through short range wireless transmission. VANET applications vary from safety and accident avoidance to leisure and entertainment. The data dissemination routine differs according to the delay tolerance of the application. The bandwidth usage of the application is ...

To simulate dynamic soft geo-objects and reflect geoscientific laws, the authors discuss the characteristics, mathematical expression, parameter representation and rendering of GIS Flow Element (FE) and GIS Soft Voxel (SV). The simulation and rendering algorithms of GIS FE and GIS SV are based on particle system and metaball technology in computer graphics. The main differences are that GIS FE ...