Dangerous Places: Gang Members and Neighborhood Levels of Gun Assault

Despite attention to the role of gangs in urban gun violence, much remains to be learned about the spatial distribution and consequences of residential gang membership. This study uses data from St. Louis to examine the effects of resident gang membership on rates of gun assault. We also consider whether gun violence is conditioned by the level of gang membership in surrounding communities. As anticipated, communities with the highest number of gang members also have the highest rates of gun assault. However, much of the impact of gang membership on gun assaults extends outside of the boundaries of gang neighborhoods, especially those neighborhoods with few or no gang members. The number of gang members in surrounding neighborhoods has no discernible effect on gun assaults in communities with higher rates of gang membership. Finally, controlling for the spatial proximity of residential gang membership helps to account for some of the association between neighborhood disadvantage and gun assaults.     

Using Propensity Score Matching to Understand the Relationship between Gang Membership and Violent Victimization: A Research Note

Due to methodological limitations, such as unmatched gang samples and a lack of longitudinal investigations, it remains unresolved whether joining a gang leads to future violent victimization or both share a set of common causes. Guided by selection, facilitation, and enhancement perspectives, the current study applied Propensity Score Matching on data from the Gang Resistance Education and Training longitudinal study to investigate the nature of the gang‐violent victimization relationship. Results indicated antecedent differences between those who did and did not join gangs, particularly violent victimization and delinquency. When gang and non‐gang members with similar propensities for joining were matched, the relationship between gang membership and violent victimization dissipated. Findings suggest policy attention to early delinquency and victimization risk factors generally.     

Slash,Shoot, Kill: Gang Recruitment of Children and the Penalties Gangs Face

Criminal street gang recruitment of minors has proliferated through countless communities in the United States as tensions continue to rise between gangs, communities, and the police. In response, many state legislatures have proposed legislation to combat such influence. However, not only are the proposed penalties too lenient, but some states do not even have laws that prosecute criminal street gang recruitment of minors. This note proposes that all 50 states enact an anti–gang recruitment statute specifically targeting recruiters of criminal street gangs by criminalizing gang recruitment of a minor.     

Revisiting the Use of Propensity Score Matching to Understand the Relationship between Gang Membership and Violent Victimization: A Cautionary Note

Previous research has consistently reported that gang members are more likely to experience violent victimization compared to non‐gang members. Recently, however, a study challenged this conventional wisdom using the Gang Resistance Education and Training (GREAT) data. Employing propensity score matching (PSM), this study reported no significant differences in violent victimization between gang and non‐gang members. Upon closer examination of the GREAT data and the PSM process used in this study, we note several theoretical, methodological, and statistical concerns. We reanalyze the GREAT data using both negative binomial regression and PSM. We find that self‐reported gang members were significantly more likely to report subsequent violent victimization compared to non‐gang members. Although contrary to this previous study, our findings are consistent with the bulk of previous empirical research and widely held beliefs about the relationship between gang membership and violent victimization.     

Routine Activities and Proactive Police Activity: A Macro-scale Analysis of Police Searches in London and New York City

This paper explored how city-level changes in routine activities were associated with changes in frequencies of police searches using six years of police records from the London Metropolitan Police Service and the New York City Police Department. Routine activities were operationalised through selecting events that potentially impacted on (a) the street population, (b) the frequency of crime or (c) the level of police activity. OLS regression results indicated that routine activity variables (e.g. day of the week, periods of high demand for police service) can explain a large proportion of the variance in search frequency throughout the year. A complex set of results emerged, revealing cross-national dissimilarities and the differential impact of certain activities (e.g. public holidays). Importantly, temporal frequencies in searches are not reducible to associations between searches and recorded street crime, nor changes in on-street population. Based on the routine activity approach, a theoretical police-action model is proposed.     

The Relationship Between Crime Reporting and Police: Implications for the Use of Uniform Crime Reports

Empirical studies that use reported crime data to evaluate policies for reducing crime will understate the true effectiveness of these policies if crime reporting/recording behavior is also affected by the policies. For instance, when the size of the police force increases, changes in the perceived likelihood that a crime will be solved may lead a higher fraction of victimizations to be reported to the police. In this paper, three data sets are employed to measure the magnitude of this reporting bias. While each of these analyses is subject to individual criticisms, all of the approaches yield similar estimates. Reporting bias appears to be present but relatively small in magnitude: each additional officer is associated with an increase of roughly five Index crimes that previously would have gone unreported. Taking reporting bias into account makes the hiring of additional police substantially more attractive from a cost–benefit perspective but cannot explain the frequent inability of past studies to uncover a systematic negative relationship between the size of the police force and crime rates.     

The European Sourcebook of Crime and Criminal Justice Statistics: A New Tool in Assessing Crime and Policy Issues in Comparative and Empirical Perspective

Theories which suggest a relationship between crime or criminal justice variables on the one hand, and variables related to criminal justice policies on the other hand, cannot be tested without reference to historic or comparative data. Since international comparisons offer the most powerful test of such theories, policy-related research in Europe has suffered, so far, from a lack of valid comparative data. Whether crime data from different countries are comparable, has always been subject to controversies. In the case of the European Sourcebook of Crime and Criminal Justice, a network of specialists was established under the auspices of the Council of Europe in order to assess the validity of the data. Although some problems in cross-country level comparisons could not be settled, the European Sourcebook offers comparative data on 36 Member States of the Council of Europe on a variety of subjects (offences and offenders known to the police; prosecution, convictions, sentences, and corrections; survey data; and indications on manpower and budgets of police forces, prosecutors, and corrections).     

Raman Microspectroscopic Mapping: A Tool for Identification of Fused Materials in Fire Debris

Examination of fire debris can provide information about the types of materials which were present at the time of the fire to give insights for fire scene reconstruction and understanding compartment fire dynamics. This paper demonstrates the ability of Raman spectroscopy for material identification postfire in complex situations, such as the production of fused masses during fire dropdown. A validated Raman spectral library is combined with Raman mapping in three fire case studies, to determine the individual materials in the fused masses formed. The case studies accessed material combinations of several common polymers. Raman mapping was carried out on a 10 μm × 10 μm square of the masses. Material identification using this technique ranged from a high of 85% match to a low of 40% match. This work demonstrated that complex masses found in the fire debris can be resolved into the individual material components for identification and spatial distribution.     

综合语篇分析模式与公安英语口语教学

综合语篇分析模式是指将文体分析、语域分析、体裁分析综合运用于英语语篇教学的模式,将该模式应用于公安英语 口语教学将有利于培养学生在将来的公安工作中用英语办事的能力。     

Small Screens and Big Streets: A Comparison of Women Police Officers on Primetime Crime Shows and in U.S. Police Departments, 1950 to 2008

This article utilizes a longitudinal approach to assess the visibility of women as police officers in primetime crime shows from 1950 to 2008 and compares these numbers for television to actual data on women who work as police officers in the United States. We find that as expected, annual labor force data and crime show data both indicate increases in the number of minorities and women working in the criminal justice system over time. Given the robust literature on the general underrepresentation of women on television, however, we did not expect to uncover that both White and minority women are overrepresented as police officers on television every year compared to the occupational reality. Implications of the findings are discussed.     

An Analysis of Advertisements: A Lens for Viewing the Social Exclusion of Women in Police Imagery

This study examines whether there are differential relationships among trauma exposure, familial risk and protective factors, substance abuse, and posttraumatic stress disorder (PTSD) among incarcerated and non-incarcerated women. A case-control method was used to match 100 incarcerated women with 100 women in the general population. Incarcerated women had a significantly higher risk of trauma exposure as compared with controls, with odds ranging from 1.7 to 3.7. When group was controlled, exposure to sexual or physical trauma significantly increased the odds of PTSD (odds ratio = 5.0; p < .05), as did substance use in response to traumatic distress (odds ratio = 8.9; p < .001). Family-related characteristics did not appear to moderate this relationship. The findings suggest that incarcerated women are at high risk for PTSD given their high rates of trauma exposure and apparent lack of appropriate coping mechanisms; the results support the use of trauma-specific interventions for this population.     

Violent Crime in the Urban Community: A Comparison of Stockholm and Basel

In this article the authors present some preliminary findings from a comparative study of police recorded violent crimes in Stockholm and Basel. They present the first results from a comparative analysis of the situational context, the ecology of crime, and of offender residences in these cities. There is impressive evidence of basic similarities in the situational context of violent crime and the residential distribution of violent offenders. Yet there are also significant differences, some of which may have interesting implications for crime prevention. Firstly, violent crime seems to be more highly concentrated during weekend nights in Stockholm than in Basel. Secondly, they find evidence that the presence of weapons in a community increases the risk of more serious outcomes of violent events. Efforts to reduce the availability of weapons may thus have significant effects on the outcomes of violence, but not necessarily on its frequency. Thirdly, they show that offenders in both cities are highly concentrated in socially disorganised communities with few economic and social resources.     

Crime Scene Behaviors and Characteristics of Offenders with Mental Illness: A Latent Class Analysis

The current study aimed to identify distinct types of crime scene behaviors based on the criminal planning and motivation of offenders with mental illness in South Korea. Furthermore, our study examined the relationships between the identified types of crime scene behaviors in terms of the offenders’ sociodemographic characteristics, modus operandi, and types of mental illness. Utilizing latent class analysis, the associations between crime scene behavior types and offender characteristics such as demographic factors, crime scene actions, and criminal information were empirically investigated. In particular, based on a sample obtained from a national police database of offenses committed between 2006 and 2014, four offense groups were identified: (i) instrumental–planned, (ii) instrumental–unplanned, (iii) expressive–unplanned, and (iv) hybrid. Additionally, significant relationships were found between offense styles and offender characteristics as well as criminal backgrounds. The findings suggest that mental disorders influence the types of actions exhibited by offenders during the commission of their crime. The results are discussed in terms of their theoretical and practical utility to criminal investigation.     

Reconsidering the Relationship Between Welfare Spending and Serious Crime: A Panel Data Analysis with Implications for Social Support Theory

Several researchers have found an inverse relationship between welfare spending and serious crime. With few exceptions, these findings have been based on cross‐sectional designs, single measures of welfare spending, and few indicators of crime. In response to these limitations, the relationship between welfare spending and crime was reconsidered using panel data from California counties. Fixed‐effects regressions revealed virtually no relationship between several measures of welfare spending and five types of serious crime: (1) homicide; (2) robbery; (3) assault; (4) burglary; and (5) larceny. The estimates were resistant to numerous robustness checks and alternative specifications. The most plausible explanation for the findings is that heterogeneity was not controlled for in previous studies. Implications for social support theory are discussed.     

Outline Shape Analysis on the Trochlear Constriction and Olecranon Fossa of the Humerus: Insights for Sex Estimation and a New Computational Tool,

Sex estimation through visual analysis of the distal humerus can contribute to establishing the biological profile of an unidentified skeletal individual. Using statistical shape modeling, the trochlear constriction open curves and olecranon fossa closed outlines of 151 humeri were digitized and analyzed. The shape configurations exhibited strikingly different degrees of sexual dimorphism when evaluated using linear discriminant analysis with leave‐one‐out cross‐validation. The trochlear constriction performed poorly, correctly classifying 63.6% of the individuals. However, the olecranon fossa showed high sexual dimorphism, presenting a 94.0% accuracy. A simpler model using only two principal components was also generated. While the accuracy is slightly inferior (88.1%), it has the advantage of being constrained to bidimensional components that were translated into morphoscopic variables within a simulator interface. This allowed us to implement the method through a web application that does not require users to be trained in landmark digitization or have knowledge of geometric morphometrics.     

The Market for Scientific Crime Prevention: A Comparative Study of Canada and Venezuela

Crime prevention is an activity that, sooner or later, requires the concourse of science. But the dictates of science may not mesh well with the social, institutional and political considerations that are persistent and powerful determinants of collective action. To the extent that they are ignored, crime prevention is less scientific and more pragmatic. Using a marketing metaphor, this paper examines selected aspects of the supply of and demand for scientific crime prevention in Canada and Venezuela from 1949 to the present. In both countries, academic entrepreneurs are revealed to be a necessary factor in the sale of crime prevention to government. On the demand side, governments adopt and adapt crime prevention policies in relation to their broader perspective on social problems and social change. However, rising crime rates and climates of urgency reduce the attractiveness of crime prevention. Scientific crime prevention is easier to sell when crime rates are stable or declining.     

我国药品专利司法保护制度立法与实践的宏观评析

专利司法保护之于激励创新药物研发的作用毋庸置疑,且得到了国内外研究和实践的印证。全面、宏观地梳理近年来我国药品专利案件总体情况,是评价和健全＂中国特色＂药品专利司法制度的基础。本文将在回顾我国创新药物专利保护立法现状的基础上,以＂中国知识产权裁判文书网＂登载的所有药品专利案件为样本,分析药品专利诉讼现状,并预测未来此类案件的发展趋势,以期为完善药品专利司法保护制度提供参考依据。     

A Novel Forensic Tool for the Characterization and Comparison of Printing Ink Evidence: Development and Evaluation of a Searchable Database Using Data Fusion of Spectrochemical Methods

A searchable printing ink database was designed and validated as a tool to improve the chemical information gathered from the analysis of ink evidence. The database contains 319 samples from printing sources that represent some of the global diversity in toner, inkjet, offset, and intaglio inks. Five analytical methods were used to generate data to populate the searchable database including FTIR, SEM‐EDS, LA‐ICP‐MS, DART‐MS, and Py‐GC‐MS. The search algorithm based on partial least‐squares discriminant analysis generates a similarity “score” used for the association between similar samples. The performance of a particular analytical method to associate similar inks was found to be dependent on the ink type with LA‐ICP‐MS performing best, followed by SEM‐EDS and DART‐MS methods, while FTIR and Py‐GC‐MS were less useful in association but were still useful for classification purposes. Data fusion of data collected from two complementary methods (i.e., LA‐ICP‐MS and DART‐MS) improves the classification and association of similar inks.     

Photographic Analyses Using Skin Detail of the Hand: A Methodology and Evaluation,

Skin features have been employed by law enforcement agencies for suspect and victim identification. Comparisons of hand have arisen in casework where images have been submitted where a face was not present but a hand was visible. This research utilizes a collection of 128 hands from employees of the U.S. Army Criminal Investigation Laboratory to examine the frequency and distribution of skin detail on the dorsal surface of the hand. To assess the location of features, the hand was segmented into 14 regions using readily discernible anatomical landmarks. Overall, 2618 pigmented lesions and 92 scars or injuries were documented. When comparing the regions with one another, Regions 1–10 had fewer pigmented lesions than Regions 11–14. There was no pattern to the distribution of scars throughout the regions. The findings presented a foundation for one possible method that may differentiate hands based on the frequency and distribution of such features.     

乡镇治理新转型及其整合困境——基于皖中G乡的经验研究

当前,以民生为重点的社会政策使广大农民得到实惠的同时,却使乡镇治理陷入了分化与整合的两难境地。皖中G乡的经验研究表明:乡村人口的频繁流动、公共生活的逐渐衰落,以及广大农民对乡村组织信任度的不断降低,使得乡镇治理不是悬浮在乡村社会之上,就是处于个体化的乡村社会与国家一统性政策之间的信任困境之中。因而,从一定意义上来说,当前农村实行的统合性社会政策不仅增加了乡村社会生活的风险,而且增加了乡村基层组织的整合难度。因此,为了达到乡村社会的善治,乡镇政权必须进行改革、重建取信于民的政治权威。