3,236 research outputs found

    Proactive Policing and Robbery Rates Across US Cities

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    Author's manuscript made available in accordance with the publisher's policy.In recent years, criminologists, as well as journalists, have devoted considerable attention to the potential deterrent effect of what is sometimes referred to as “proactive” policing. This policing style entails the vigorous enforcement of laws against relatively minor offenses to prevent more serious crime. The current study examines the effect of proactive policing on robbery rates for a sample of large U.S. cities using an innovative measure developed by Sampson and Cohen (1988). We replicate their cross-sectional analyses using data from 2000 to 2003, which is a period that proactive policing is likely to have become more common than that of the original study—the early 1980s. We also extend their analyses by estimating a more comprehensive regression model that incorporates additional theoretically relevant predictors. Finally, we advance previous research in this area by using panel data, The cross-sectional analyses replicate prior findings of a negative relationship between proactive policing and robbery rates. In addition, our dynamic models suggest that proactive policing is endogenous to changes in robbery rates. When this feedback between robbery and proactive policing is eliminated, we find more evidence to support our finding that proactive policing reduces robbery rates

    Innovation and Tradition

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    Bohner G, Crutchfield RD, Messner SF, Zick A. Innovation and Tradition. International Journal of Conflict and Violence (IJCV). 2017;11

    Space power distribution system technology. Volume 2: Autonomous power management

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    Electrical power subsystem requirements, power management system functional requirements, algorithms, power management subsystem, hardware development, and trade studies and analyses are discussed

    Nonlinear elasticity of stiff biopolymers connected by flexible linkers

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    Networks of the biopolymer actin, cross-linked by the compliant protein filamin, form soft gels. They can, however, withstand large shear stresses due to their pronounced nonlinear elastic behavior. The nonlinear elasticity can be controlled by varying the number of cross-links per actin filament. We propose and test a model of rigid filaments decorated by multiple flexible linkers that is in quantitative agreement with experiment. This allows us to estimate loads on individual cross-links, which we find to be less than 10 pN. © 2009 The American Physical Society

    Not ‘Islands, Entire of Themselves’: Exploring the Spatial Context of City-level Robbery Rates

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    The current study examines spatial dependence in robbery rates for a sample of 1,056 cities with 25,000 or more residents over the 2000–2003 period. Although commonly considered in some macro-level research, spatial processes have not been examined in relation to city-level variation in robbery. The results of our regression analyses suggest that city robbery rates are not spatially independent. We find that spatial dependence is better accounted for by spatial error models than by spatial lag models. Further exploration of various spatial weights matrices indicates that robbery rates of cities within the same state are related to robbery rates of other cities within the same state, regardless of their proximity. Our analyses illustrate how systematic inquiry into spatial processes can alert researchers to important omitted variable biases and identify intriguing problems for future research

    "It is what it is": masculinity, homosexuality, and inclusive discourse in mixed martial arts

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    In this paper we make use of inclusive masculinity theory to explore online media representations of male homosexuality and masculinity within the increasingly popular combat sport of mixed martial arts MMA). Adopting a case-study approach, we discuss narratives constructed around one aspirational male MMA fighter, Dakota Cochrane, whose history of having participated in gay pornography became a major talking point on a number of MMA 'fanzine'/'community' websites during early 2012. While these narratives attempted to discursively 'rescue' Cochrane's supposedly threatened masculinity, highlighting both his 'true' heterosexuality and his prodigious fighting abilities, they also simultaneously celebrated the acceptance of homosexual men within the sport which Cochrane's case implied. Thus, we suggest that these media representations of homosexuality and masculinity within MMA are indicative of declining cultural homophobia and homohysteria, and an inclusive vision of masculinity, as previously described by proponents of inclusive masculinity theory

    Markbooks

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    A collection of carefully left traces — and their occasionally accompanying thoughts — Markbooks is the result of “an ongoing conversation about attention, its ecologies, its forms, and the markings of its passage.” “For many of the authors included here, the practice of making — and then reading — their little book located them in time… [T]here is paper, and there are pencils, and there are bodies to mark their own motion.

    Reliability and validity of cross-national homicide data: A comparison of UN and WHO data

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    Data reliability and validity are major methodological concerns in cross-national analyses of crime. Despite the large literature on cross-national homicide rates, there is little agreement on which source of data provides the most reliable estimates. In addition, few studies have examined the potential threat to validity posed by unclassified deaths. Through a description of trends over time as well as multivariate analyses, the current study aims to shed some light on these questions by (1) assessing the reliability of cross-national homicide data from the United Nations and the World Health Organization, and (2) investigating the impact of unclassified deaths on the validity of WHO data. Findings indicate that UN and WHO homicide rates (n=56) differ in magnitude but produce similar outcomes. Drawing on well-known correlates of cross-national homicide rates, the UN data provide more robust results and produce statistical models with less error. We find that WHO data are more stable and reliable over time, and better suited for longitudinal analyses. Findings also suggest that analyses drawing on WHO homicide data should not disregard unclassified deaths because their inclusion produces better fitted statistical models and provides a closer estimate of the true number of homicides
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