This paper concerns the changes in human geographical research over the last 20 years as far asthe mainstream Anglo-Saxon publications are concerned. We contend that although a lot ofcontinuity appears through the further co-existence of the three broad approaches in geography(regional, theoretical quantitative and radical), societal and scientific changes have brought newelemen...

This paper is concerned with clustering in demand. We present a discrete choice model of consumption that incorporates habit formation and information exchange among consumers in fixed social networks. We provide an analytical solution to a special case of the model by using technical tools from chemistry and biology. We demonstrate the validity of these results for the general case numerically...

This paper examines the interrelation between the geographical and social aspects of virtual worlds. We examine the main geographical features of Activeworlds, a multi-user virtual environment available over the Internet. Activeworlds is not only one of the most popular virtual environments, it is also the only publicly accessible one in which users can build themselves, and thus shape their ge...

The purpose of this research is to address the health disparities that are prominent among minority populations, particularly African American and Hispanic/Latino American women. Cardiovascular disease is the leading cause of death for Americans along with diabetes. This research addresses the underlying causes for poor health among minority women in inner-cities. Social factors such as residen...

Debate is open as to whether social media communities resemble real-life communities, and to what extent. We contribute to this discussion by testing whether established sociological theories of real-life networks hold in Twitter. In particular, for 228,359 Twitter profiles, we compute network metrics (e.g., reciprocity, structural holes, simmelian ties) that the sociological literature has fou...