Matthew Valasik

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In this article we identify social communities among gang members in the Hollenbeck policing district in Los Angeles, based on sparse observations of a combination of social interactions and geographic locations of the individuals. This information, coming from LAPD Field Interview cards, is used to construct a similarity graph for the individuals. We use(More)
Territorial behavior is often found in nature. Coyotes and wolves organize themselves around a den site and mark their territory to distinguish their claimed region. Moorcroft et al. model the formation of territories and spatial distributions of coyote packs and their markings in [33]. We modify this ecological approach to simulate spatial gang dynamics in(More)
Territorial animals and street gangs exhibit similar behavioral characteristics. Both organize themselves around a home base and mark their territories to distinguish claimed regions. Moorcroft et al. model the formation of territories and spatial distributions of coyote packs and their markings in [24]. We modify this approach to simulate gang dynamics in(More)
AIM The aim of the present study was to assess the relationship between neighborhood perception and poor self-rated health among older Mexican Americans, adjusting for important background characteristics, such as neighborhood ethnic composition and other health conditions. METHODS Drawing on the 2004-2005 Hispanic Established Populations for the(More)
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