In the present study, a modelling approach based on Geographical Information Systems (GIS) analysis is presented with the aim of identifying the influence of environmental parameters on three genera, namely, Tortula, Grimmia and Bryum as representatives of Iranian bryoflora. By using ArcGIS Desktop, we produced a model for environmental variables include altitude, precipitation, temperature and...

The development and documentation of software for the analysis of geographical data is maturing, and the needs and desires of varying user communities are becoming clearer. Certainly today there are more users in more communities, and in general much more data than before, even though data is more accessible in some countries than in others. Many more users are now meeting geographical data thr...

This paper reviews research in geographical cognition that provides part of the theoretical foundation of geographical information science. Freestanding research streams in cognitive science, behavioural geography, and cartography converged in the last decade or so with work on theoretical foundations for geographical information systems to produce a coherent research community that advances ge...

The research enterprise increasingly involves multidisciplinary collaboration, sometimes over geographic distance. Technological advances have made these collaborations possible, and the history of past innovations suggests these collaborations are desirable. Yet multidisciplinary projects can carry high coordination costs. This study investigated how collaborations address disciplinary differe...

Citizenship in the United States: The Roles of Immigrant Characteristics and Country of Origin This study develops and estimates a model of the naturalization process in the US. The model is based on both the characteristics of immigrants and features of their countries of origin. The empirical analysis is based on the 2000 US Census. Both the characteristics of immigrants and the origin-countr...

BACKGROUND The aim of this study is to show how geographical information systems (GIS) can be used to track and compare hospitalization rates for traumatic brain injury (TBI) over time and across a large geographical area using population based data. RESULTS & DISCUSSION Data on TBI hospitalizations, and geographic and demographic variables, came from the Ontario Trauma Registry Minimum Data ...

Location-based systems in the area of tourism, so-called mobile tourist guides, combine geographic information and tourism information in order to deliver relevant content to tourists on the spot. Existing systems often adhere to a heavy-weight approach. This means that, firstly, some do not build on existing tourism information systems, secondly, most of them do not employ standards for access...

Data modelling is a critical stage of database design. Recent research has focused upon object-oriented data modes, which appear more appropriate for certain applications than either the traditional relational model or the entity-relationship approach. The object-oriented approach has proved to be especially fruitful in application areas, such as the design of geographical information systems w...

Data modelling is a critical stage of database design. Recent research has focused upon object-oriented data modes, which appear more appropriate for certain applications than either the traditional relational model or the entity-relationship approach. The object-oriented approach has proved to be especially fruitful in application areas, such as the design of geographical information systems w...