Over the last several years, as new waves of immigrants have continued to enter the United States, the effects of immigration on the nation’s economy and society have been hotly debated. Largely ignored in the debate, however, has been the wellbeing of immigrant children. Little is known about...

Generalized Darwinian evolutionary theory has emerged as central to the description of economic process (e.g., Aldrich et al., J Evol Econ 18:577–596, <CitationRef CitationID="CR3">2008</CitationRef>). Just as Darwinian principles provide necessary, but not sufficient, conditions for understanding the dynamics of social entities, so too...</citationref>

Previous work on the asymptotic spread of HIV infection along a low dimensional 'sociogeographic' network--a social network characteristically embedded within a limited geographic area--is extended to explore threshold conditions under which the infection extends widely beyond an initial set of...

The March, 1978 issue of Management Science carried a paper by Jan M. Chaiken titled "Transfer of Emergency Service Deployment Models to Operating Agencies" which purported to describe the successful implementation of, among other things, fire service management models developed by the Rand...

Census data on migration within and between the 25 largest U.S. metropolitan areas--containing more than 113 million people--permit construction of a probability-of-contact matrix corre-sponding to a particular Markov process dominated by the nation's largest cities, a hierarchical structure....

Recent empirical research, and a simple stochastic modeling exercise, suggest that affluent suburban communities are at increased risk for the diffusion of HIV from present inner city epicenters, while the 'core group' construct of sexually transmitted disease theory suggests, somewhat...

During the 1970s, poor neighborhoods of New York City lost significant proportions of housing and associated community structure to a policy-driven process of contagious fire and building abandonment. The south Bronx was among the most heavily damaged areas. Here we analyze and compare the...