Journal of Geographical Systems
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Surveying general prospects and challenges of GIS implementation in developing countries: a SWOT–AHP approach
Journal of Geographical Systems - Tập 11 - Trang 291-310 - 2009
We propose a combined method based on the strengths, weaknesses, opportunities and threats (SWOT) and analytic hierarchy process (AHP) to investigate the challenges and prospects of adopting geographic information systems (GIS) in developing countries. In this context, we identify, group, and analyse SWOT indicators in relation to the main GIS components: data, people, and technology. The relative......
A sampling approach to estimate the log determinant used in spatial likelihood problems
Journal of Geographical Systems - Tập 11 - Trang 209-225 - 2009
Likelihood-based methods for modeling multivariate Gaussian spatial data have desirable statistical characteristics, but the practicality of these methods for massive georeferenced data sets is often questioned. A sampling algorithm is proposed that exploits a relationship involving log-pivots arising from matrix decompositions used to compute the log determinant term that appears in the model lik......
Map projection errors in the Weber problem
Journal of Geographical Systems - Tập 4 - Trang 325-342 - 2002
When demand points are given as a planar map where projection method is explicitly stated, we usually know the latitudes and longitudes of these points from the map. Then we can solve the Weber problem on the globe, and we do not suffer from errors. This paper analyses how cylindrical projections cause distortion in the Weber problem when demands are distributed on the Northern Hemisphere. First,......
A spatio-temporal model of housing prices based on individual sales transactions over time
Journal of Geographical Systems - - 2009
A spatio-temporal model of housing price trends is developed that focuses on individual housing sales over time. The model allows for both the spatio-temporal lag effects of previous sales in the vicinity of each housing sale, and for general autocorrelation effects over time. A key feature of this model is the recognition of the unequal spacing between individual housing sales over time. Hence th......
Evaluating the impact of data quantity, distribution and algorithm selection on the accuracy of 3D subsurface models using synthetic grid models of varying complexity
Journal of Geographical Systems - Tập 15 - Trang 71-88 - 2011
Testing the accuracy of 3D modelling algorithms used for geological applications is extremely difficult as model results cannot be easily validated. This paper presents a new approach to evaluate the effectiveness of common interpolation algorithms used in 3D subsurface modelling, utilizing four synthetic grids to represent subsurface environments of varying geological complexity. The four grids a......
Accessibility in space and time: A theme in spatially integrated social science
Journal of Geographical Systems - Tập 5 - Trang 1-3 - 2003
Erratum to: Housing price prediction: parametric versus semi-parametric spatial hedonic models
Journal of Geographical Systems - Tập 20 - Trang 107-109 - 2017
Business establishment mobility behavior in urban areas: a microanalytical model for the City of Hamilton in Ontario, Canada
Journal of Geographical Systems - Tập 9 - Trang 229-252 - 2007
We present a microanalytical firm mobility model for the City of Hamilton, Canada, developed with data from the Statistics Canada Business Register. Contributing to the scarce literature on firm migration behavior, we explore and model the determinants of mobility among small and medium size firms who retained less than 200 employees between 1996 and 1997. Our exploratory results suggest that shor......
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