Life within a gang includes two endemic features: violence and alcohol. Yet, to date, most researchers studying gang behavior have focused on violence and its relationship to illicit drugs, largely neglecting the importance of alcohol in gang life. Because alcohol is an integral and regular part of socializing within gang life, drinking works as a social lubricant, or social glue, to maintain n...

Gang scheduling is a job scheduling policy for parallel computers that combines elements of space-sharing and time-sharing. In this paper, we analyze the performance of gang scheduling policies that allow the remapping of an executing job to a new set of processors. Most previously proposed gang-scheduling policies do not allow such job remapping under the assumption that it is prohibitively ex...

In this paper we study the performance of a distributed system which is subject to hardware failures and subsequent repairs. A special type of scheduling called gang scheduling is considered, under which jobs consist of a number of interacting tasks which are scheduled to run simultaneously on distinct processors. System performance is examined and compared in cases where different distribution...

Gang scheduling has been widely used as a practical solution to the dynamic parallel job scheduling problem. Parallel threads of a single job are scheduled for simultaneous execution on a parallel computer even if the job does not fully utilize all available processors. Non allocated processors go idle for the duration of the time quantum assigned to the threads. In this paper we propose a clas...

This study compares the scope and nature of the gang problem in two communities: one in the United States and one in Trinidad and Tobago, a small-island developing state in the eastern Caribbean that has experienced a serious outbreak of violence over the past decade. Data drawn from surveys of adult arrestees reveal that among respondents, 3.2% of those in the U.S. sample and 5.1% of those in ...

Helping communities combat gang activity is a leading priority for the Office of Juvenile Justice and Delinquency Prevention (OJJDP), and our Gang Reduction Program has been a key initiative to that end. A comprehensive, integrated, and coordinated approach to prevent ing and reducing gang activity, the program emphasizes addressing the needs of youth and affecting change in families, organizat...

BACKGROUND Many studies document a robust and consistent relationship between gang membership and elevated delinquency, with gang members disproportionately involved in crime compared to non-gang peers. Research also indicates that both delinquent youth and youth who join gangs often show a wide range of deficient or distorted social-cognitive processes compared to non-delinquent peers. Cogniti...

A preemptive gang scheduler is developed and evaluated. The gang scheduler, called SCoreD , is implemented on top of a UNIX operating system and runs on workstation and PC clusters connected by Myrinet, a giga-bit class, high-performance network. To have high-performance communication at the user-level and a multiuser environment simultaneously, we propose network preemption to save and restore...