A DNA-based approach for the forensic identification of Asiatic black bear (Ursus thibetanus) in a traditional Asian medicine

Attempts to prevent illegal trade in bile and gallbladders from Asiatic black bears, Ursus thibetanus, are hampered by difficulties associated with identifying such items. We extracted DNA from bile crystals of unknown species origin and generated partial cytochrome b (cyt b) sequences using either universal primers (positioned in conserved regions of cyt b), or primers designed on existing U. thibetanus sequences (UT). Species origin was determined by aligning resolved sequences to reference sequence data. The universal primers were unsuitable for U. thibetanus identification when multiple species templates were present in the samples. The UT primers amplified U. thibetanus DNA from all sample extracts, including those containing mixed species templates. The amplified fragment can distinguish U. thibetanus from the most closely related species, U. americanus, a distinct advantage of DNA sequencing over the methods currently used to analyze suspected U. thibetanus bile.     

Sexual dimorphism in America: geometric morphometric analysis of the craniofacial region

One of the four pillars of the anthropological protocol is the estimation of sex. The protocol generally consists of linear metric analysis or visually assessing individual skeletal traits on the skull and pelvis based on an ordinal scale of 1-5, ranging from very masculine to very feminine. The morphologic traits are then some how averaged by the investigator to estimate sex. Some skulls may be misclassified because of apparent morphologic features that appear more or less robust due to size differences among individuals. The question of misclassification may be further exemplified in light of comparisons across populations that may differ not only in cranial robusticity but also in stature and general physique. The purpose of this study is to further examine the effect of size and sex on craniofacial shape among American populations to better understand the allometric foundation of skeletal traits currently used for sex estimation. Three-dimensional coordinates of 16 standard craniofacial landmarks were collected using a Microscribe-3DX digitizer. Data were collected for 118 American White and Black males and females from the W.M. Bass Donated Collection and the Forensic Data Bank. The MANCOVA procedure tested shape differences as a function of sex and size. Sex had a significant influence on shape for both American Whites (F = 2.90; d.f. = 19, 39; p > F = 0.0024) and Blacks (F = 2.81; d.f. = 19, 37; p > F = 0.0035), whereas size did not have a significant influence on shape in either Whites (F = 1.69; d.f. = 19, 39; p > F = 0.08) or Blacks (F = 1.09; d.f. = 19, 37; p > F = 0.40). Therefore, for each sex, individuals of various sizes were statistically the same shape. In other words, while significant differences were present between the size of males and females (males on average were larger), there was no size effect beyond that accounted for by sex differences in size. Moreover, the consistency between American groups is interesting as it suggests that population differences in sexual dimorphism may result more from human variation in size than allometric variation in craniofacial morphology.     

Decoding Negotiation Systems in the Middle East and North Africa: A Framework for Analysis

Regional conflicts are becoming increasingly complex due to the involvement of an ever more numerous and interconnected set of actors. Previous research has focused on regional conflict systems and has generated theoretical approaches such as the regional security complex paradigm. However, when complex, multifaceted, seemingly contradictory webs of relationships are spun in a region, new tools are needed to analyze and evaluate them. Drawing on previous regional conflict models, we propose a negotiation-oriented framework of regional conflict analysis that explores the type and intensity of relationships between state and nonstate actors in a conflict system. We offer a seven-step scale of relationships (ranging from ally to active armed opponent) that represents a novel contribution to the methodological efforts to analyze relationships in conflict systems. This framework brings to light the relational imbalance of the MENA region and has the potential to contextualize for negotiators and mediators the complex system of conflicts within, and possibly outside, the region.     

The Impact of Freezing on Bone Mineral Density: Implications for Forensic Research

It is common for researchers using animal or human remains for scientific study to freeze samples prior to use. However, effects of freezing on bone macro‐ or microstructure are relatively unknown. The research objective of this study was to determine whether freezing could potentially bias experimental results by analyzing changes in bone mineral density (BMD) with the freezing of remains over time. Eight fetal pigs were scanned to determine their initial BMD before freezing. Three piglets underwent a freeze‐thaw cycle to assess the effects of the freezing process. Four piglets were frozen and scanned weekly for 20 weeks to assess freezing over time. The overall average between the fresh initial scan and final frozen scan was significantly different (p < 0.001). Per contra, the final thawed BMD scans did not differ from the initial fresh scan (p = 0.418). Thus, completely thawed remains are recommended for experimental studies.     

School Suspensions and Adverse Experiences in Adulthood

The “school-to-prison pipeline” and the negative effects of suspensions, expulsions and school arrests have received increasing national attention recently. Researchers have documented some of the potential harms of these exclusionary school discipline practices for students, including academic difficulties, increased misconduct, and future justice system contact. However, these investigations have been somewhat limited in scope, as they tend to focus only on students’ academic outcomes and juvenile justice system involvement. In this paper we seek to expand upon prior studies by considering how school suspensions may affect youth in peripheral and long-lasting ways. Using data from the National Longitudinal Survey of Adolescent to Adult Health, we analyze whether being suspended from school relates to the likelihood of students experiencing a number of adverse events and outcomes when they are adults. We find that being suspended increases the likelihood that a student will experience criminal victimization, criminal involvement, and incarceration years later, as adults.     

A ‘double edged sword’: discretion and compulsion in policing domestic violence

Policing domestic violence is a complex area in which there are divergent views about the extent to which front line police action should be mandated by legislation and guidance. This study set in Victoria, Australia raised questions about the balance between discretion and compulsion in policing domestic violence through researching the implementation of the Code of Practice used to respond to domestic violence incidents. The project team interrogated aggregate data from the police database on family violence and also interviewed 125 police members (60 sergeants and 65 constables) to explore the attitudes to the Code of Practice and policing domestic violence. The findings reveal that discretion within a range of options is circumscribed. Variable understandings of the nature of domestic violence and the role of risk assessment and management suggest that constrained and guided discretion may be required to achieve optimum effectiveness in policing responses to domestic violence.     

Persistence and renewal: the German Left Party's journey from outcast to opposition

This article examines electoral support for the German Left Party (Die Linke) at the 2013 Federal election. It focuses on two substantive issues. The first is that whilst studies have commonly linked the party's support to political culture, the party has modernised and it is unclear how this has influenced its support. The second is that the election was held amidst the fallout of the global financial crisis and thus enables us to test if the party benefitted from economic adversity. Using multivariate logistic regression models, these issues are investigated at the individual-level using data from the German Longitudinal Election Study. The results demonstrate that the party's support is steeped in political culture, but with important east–west variation. Further, there is no evidence that the party attracted support from economically anxious voters. These findings present a basis for broader reflections on the party's influence on the contemporary political landscape.     

When Do Displaced Persons Return? Postwar Migration among Christians in Mount Lebanon

Under what conditions will forcibly displaced persons return to their original homes after wars end? We draw on theories of labor migration to show that even displaced persons who have positive feelings toward their original location may nevertheless choose to return as regular visitors rather than permanent residents unless the location offers attractive economic opportunities. Furthermore, we argue that violence can create negative emotions not only toward geographic locations of bloodshed but also against its perpetrators. After ethnic wars, the displaced may be unwilling to return to intermixed locations, exacerbating ethnic separation. We study postwar migration among Lebanese Christians displaced during the 1980s and identify economic conditions using exogenous price shocks for olive oil, a major local export. Among policy implications for economic reconstruction and transitional justice, our most important insight is that sometimes we should help the displaced in their new location rather than induce permanent return to their old homes.