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181.
Anne Dray Lorraine Mazerolle Pascal Perez Alison Ritter 《Journal of Experimental Criminology》2008,4(3):267-287
Our paper examines how street-level drug markets adapt to a macro-level disruption to the supply of heroin, under three experimental
conditions of street-level drug law enforcement: random patrol, hot-spot policing and problem-orientated policing. We utilize
an agent-based model to explore the relative impact of abstractions of these three law enforcement strategies after simulating
an ‘external shock’ to the supply of heroin to the street-level drug market. We use 3 years of data, which include the period
of the ‘heroin drought’ in Melbourne (Australia) that commenced in late 2000 and early 2001, to measure changes in a selected
range of crime and harm indicators under the three policing conditions. Our results show that macro-level disruptions to drug
supply have a limited impact on street-level market dynamics when there is a ready replacement drug. By contrast, street-level
police interventions are shown to vary in their capacity to alter drug market dynamics. Importantly, our laboratory abstraction
of problem-orientated policing is shown to be the optimal strategy to disrupt street-level injecting-drug markets, reduce
crimes and minimize harm, regardless of the type of drug being supplied to the market.
相似文献
Alison RitterEmail: |
182.
Anne van Hoof Quinten A. W. Raaijmakers Yolanda van Beek William W. HaleIII Liesbeth Aleva 《Journal of youth and adolescence》2008,37(7):772-782
This study investigated a multi-mediation model of the relationship between bullying behavior, peer victimization, personal
identity, and family characteristics to adolescent depressive symptoms in 194 high school students, 12–18 years of age. In
the first model, peer victimization mediated the relation between bullying behavior and depressive symptoms. In the second
model, personal identity mediated the relation between peer victimization and depressive symptoms. In the final model, the
two mediation models were combined. The relative influence of family characteristics on all variables in the two mediation
models was studied using structural equation modeling. The results supported both mediation models and confirmed the influence
of family characteristics on all variables in the mediation models. This study indicates that victimization by one’s peers
has consequences for adolescents’ psychological health when their personal identity is affected. In addition, the study was
able to model several processes in which family characteristics were related to adolescent depressive symptoms. Moreover,
the final combined model (in which the two mediation models and the influence of family characteristics on all variables were
confirmed) explained half of the variance in adolescent depressive symptoms.
相似文献
Liesbeth AlevaEmail: |
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International Journal for the Semiotics of Law - Revue internationale de Sémiotique juridique - 相似文献
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