This paper is concerned with the estimation of the autoregressive parameter in a widely considered spatial autocorrelation model. The typical estimator for this parameter considered in the literature is the (quasi) maximum likelihood estimator corresponding to a normal density. However, as discussed in this paper, the (quasi) maximum likelihood estimator may not be computationally feasible in m...

The purpose of this article is to analyze the dynamic trend of spatial dependence, which is not only contemporary but time-lagged in many socio-economic phenomena. Firstly, we show some of the commonly used exploratory spatial data analysis (ESDA) techniques and we propose other new ones, the exploratory space-time data analysis (ESTDA) that evaluates the instantaneity of spatial dependence. We...

Spatial and geographic constructs have been incorporated into strategy research since its inception. Yet, strategy researchers have been slow to take advantage of methods designed specifically for these variables. This is despite the fact that spatial methods can be used to identify and remediate spatial autocorrelation—eliminating a potentially important source of bias in empirical results—and...

Cavities in spatial phenomena require geometric representations of regions with holes. Existing models for reasoning over topological relations either exclude such specialized regions (9-intersection) or treat them indistinguishably from regions without holes (RCC-8). This paper highlights that inferences over a region with a hole need to be made separately from, and in addition to, the inferen...

almost all countries have faced the urbanization. in the long run, changes in the production technology have caused migration from rural to urban areas. existing cities have grown and new ones have been created. this is named as “urban development” in the urban literature. cites are created because of economies of scale in production and consumption. there are different cities with different si...

iran is one of the world's arid regions and exposed to dust particles in the air. this is important in spatial and temporal terms as well as the affects human health. in this paper a day when due to the amount of dust particles visibility reduces to 5,000 m is considered the dusty day. in the spatial and temporal analysis of dusty days 38 synoptic stations were studied. in order to conduct data...

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abstractâ generally the level of development in different economic sections of a country is not the same as is in its regions, but heterogeneity and incongruity are seen in educational, health services, social services and welfare, agriculture and industry sections of a country. one of the issues and problems which regional planners are facing is the unequal growth and development of the areas,...