Why and How Civil Defense Militias Emerge: The Case of the Arrow Boys in South Sudan

This article uses a collective-action framework to study the mobilization of the Arrow Boys (AB), a community defense militia in South Sudan. Drawing on general collective-action explanations, this article argues that the mobilization of the AB was facilitated by two factors: (1) a strong overlap of the fighter's private and the community's public benefit and (2) close social relationships and expectations within the community. The article supports these theoretical claims by, first, examining the scope conditions under which the AB formed and, second, drawing on individual interviews with AB members from Western Equatoria in South Sudan.     

Analysis of 11 tetrameric STRs in wild boars for forensic purposes

STR profiling of animal species has a wide range of applications, including forensic identification, wildlife preservation, veterinary public health protection and food safety. We tested the efficacy of a multiplex PCR-based assay including 11 porcine-specific tetrameric STRs in a population sample of wild boars (n = 142) originating from Piedmont (North West Italy). Multiple deviations from Hardy–Weinberg expectations were observed, mostly due to a reduction in observed heterozygosity indicative of a high degree of inbreeding. A value of θ of 0.046 and an inbreeding coefficient of 0.089 were estimated. Combined power of discrimination and probability of exclusion values for the STR panel were 0.9999999999996 and 0.99989. In order to test the suitability of the method for meat traceability purposes, a domestic pig reference sample (n = 412), consisting of commercial lines commonly used in the meat production process, was also typed. A Bayesian cluster analysis carried out using the observed genotypes, showed a percentage of correct subspecies assignment of individual samples of 0.974 for wild boars and 0.991 for pigs, thus demonstrating the usefulness of the multiplex STR-typing system for discrimination purposes.     

Personality Profiles of Special Force Police Officers

The present study was aimed at investigating whether different personality profiles could be found among Italian police Special Force (SF) officers. Our hypothesis was that different personality profiles would be found, and that they would differ with respect to psychological and organizational functioning. This conjecture was tested on anonymously collected Big Five scores of all members of a 'Reparto Mobile' unit (n?=?289) by means of a Two-Step cluster analysis. Two distinct personality profiles were found: two-thirds of participants showed a personality profile that was quite similar to the general population, with the exception of a higher self-reported emotional stability and self-deceptive enhancement, while the remaining third showed higher levels of any personality domain than both the other cluster and the general population. These officers also endorsed lower scores in measures of depression, anxiety, professional exhaustion, loss of empathy, and higher scores in a measure of organizational resilience, suggesting that they may represent the most suitable personnel for the delicate tasks their unit usually has to accomplish. In addition, self-deceptive enhancement emerged as a likely personality trait of police SF officers.     

Assessing network patterns in illegal firearm markets

This study presents the results from a qualitative survey of 20 incarcerated and nonincarcerated illicit firearm market consumers in Quebec. Its general aim is to identify key acquisition patterns for illegal firearms. The interview sessions confirmed several general patterns emerging from past research. Illegal firearm acquisitions generally took place through informal channels. Opportunistic transactions were prevalent across all respondents’ experiences. The presence of key point sources were discussed across the interviews, but to a much lesser extent than the high volume of friends, family members, and close contacts who were more likely to supply firearms. Point sources, and particularly those operating off Native reserves near Montreal, were also more difficult to access for inexperienced acquirers. That such reputed suppliers were not as prevalent across respondents’ experiences was not simply due to the difficulties to access them, but largely because respondents were already well exposed to a variety of channels for acquiring firearms. An analysis of respondents’ personal networks revealed that only a few respondents had closed networks that were limited in suppliers and that most were able to acquire illegal firearms through open or brokered networks that put them into contact with a multitude of suppliers (in open networks) or a reliable set of intermediaries (in brokered networks). This was the case for both free and incarcerated respondents in the sample. That open and brokered networks were more prominent suggests that even if key point sources are removed from the market by law-enforcement efforts, consumers will be able to adjust rather quickly by turning to any of the channels that are accessible to them.     

GC／ECD、GC／MS法检验焚烧尸体组织中安定和舒乐安定

目的建立GC/ECD、GC/MS分析焚烧尸体肝组织中安定、舒乐安定的方法。方法采用酸性丙酮-水浸提、液-液分配净化的方法,以HP6890GC/ECD、OV-1701石英毛细管柱和岛津QP5050ADB-5MS石英毛细柱分析方法。结果该提取方法的回收率安定81.2%、舒乐安定75.8%,焚烧尸体肝组织中的含量:安定0.060μg/g,舒乐安定0.330μg/g。结论该方法操作简单,准确可靠,适用于中毒案件鉴定。     

The Effects of Oil Production and Ethnic Representation on Violent Conflict in Nigeria: A Mixed-Methods Approach

A large qualitative literature on violent conflict in Nigeria has identified the importance of oil production and ethnicity as salient factors in understanding violence, especially in the oil-rich Niger Delta. This resonates with the broader literature on natural resources, ethnic exclusion, and conflict. This article advances existing research by providing the first highly disaggregated statistical analysis of oil, ethnicity, and violence for Nigerian Local Government Areas (LGAs). We test whether oil production in a weak state environment, and local groups’ access to governmental power, affect the level of violence in Nigeria. We employ unique disaggregated data on violent conflict events, proprietary data on oil production, and newly collected information on local ethnic groups’ access to the federal government for 774 LGAs. We find strong evidence that LGAs with oil infrastructure experience significantly more violence than others, while access to the federal government significantly reduces violence. We complement these findings with a qualitative investigation of violent conflicts in Nigeria.