Detecting Gunshot Residue from Sellier & Bellot Nontox Heavy Metal‐free Primer by in situ Cathodoluminescence

Gunshot residue (GSR) from the discharge of ammunition can provide crucial information in reconstructing criminal cases. Traditional primers create particles of heavy metals such as lead, barium, and antimony. In forensic laboratories, automatic inorganic particle detection is performed by scanning electron microscopy (SEM), using the backscattered electron signal to search for bright residues among the many darker environmental particles, due to higher electron density of the former. Some innovative primers, indicated as heavy metal‐free (HMF), produce a residue of elements with atomic numbers below 21, urgently demanding new detecting solutions. For the first time, residues from Sellier & Bellot Nontox HMF primer are demonstrated to emit visible light under electron beam stimulation in a SEM. Cathodoluminescence is then proposed as a promising tool to both detect and characterize residues in forensic cases involving HMF primers, with minor changes to traditional analytical apparatus used for inorganic GSR analysis.     

Context Matters: Reactive and Proactive Bystander Action to Prevent Sexual and Dating Violence in High Schools

ABSTRACT

Given high rates of relationship violence among adolescents, there is a need to understand variables that influence adolescents’ helping behaviors to reduce risk for dating and sexual violence (reactive) and promote prevention before violence happens or risk factors are evident (proactive). The current paper examined individual and school variables related to greater actionism in a large sample of high school students. Baseline, cross-sectional data used in the current analyses were gathered before intervention as part of a prevention program evaluation across 25 high schools in New England from students in grades 9–12 (N= 3,404). Students who self-reported a greater number of proactive actions taken were students who identified as sexual minorities, had a history of victimization, and were in schools with supportive peer norms. The current findings suggest a model for prevention that might include training individuals and attending to school level variables.     

How Much Does Effortful Thinking Underlie Observers’ Reactions to Victimization?

From blaming to helping innocent victims, just-world research has revealed that observers react to victimization in a variety of ways. Recent research suggests that such responses to victimization require effortful thought, whereas other research has shown that people can react to these situations intuitively. Along with manipulating just-world threat, across seven experiments, we manipulated or measured participants’ level of mental processing before assessing judgments of victim derogation, blame, willingness to help, and ultimate justice reasoning. The effect of just-world threat on these responses held constant over a range of manipulations/measures, suggesting that the processes involved in maintaining a belief in a just world are not restricted to the rational, deliberative level of mental processing but also occur intuitively.     

Regulation on coexisting legal and illegal markets with quality differentiation

European Journal of Law and Economics - This paper considers coexisting legal and illegal markets for goods with undesirable consumption externalities, such as marijuana markets. This paper...     

Letter From the Editor

American Journal of Criminal Justice -     

Uncontestable favoritism

Public Choice - One might obtain special favor or avoid disfavor by winning a competitive contest, a socially wasteful process that has been studied extensively in the rent-seeking literature. But...     

Carbon Neutrality in the New U.S.-China Future

正In U.S. Special Presidential Envoy for Climate John Kerry's visit to Tianjin, China, in early September and his discussions with China's Special Envoy for Climate Change Xie Zhenhua, we can see a welcome movement toward the better(old) days of cooperation in areas the two countries could agree on. The old official bridges were partially "deconstructed" and that self-inflicted damage was shouldered by the American people. Now, the U.S. can finally see what it produced: precisely nothing of value.     

Predicting perceptions of date rape: an examination of perpetrator motivation, relationship length, and gender role beliefs

The purpose of the current study is to examine the influence of multiple offender motivations (including no indication of a motivation), relationship length, and gender role beliefs on perceptions of a male-on-female date rape. A sample of 348 U.S. college students read a brief vignette depicting a date rape and completed a questionnaire regarding their attributions about the victim (culpability, credibility, trauma, pleasure) and perpetrator (culpability, guilt, sentencing recommendations). Results indicate that providing observers with information about the perpetrator's motivation was associated with lower victim blame. Relationship length is not predictive of rape attributions. Egalitarian gender role attitudes are associated with lower levels of victim blame. Overall, gender role attitudes exert a more significant influence on rape attributions than participant gender. The findings suggest that knowledge of an offender's motivation as well as observers' gender role attitudes can influence attributions about the culpability of victims and perpetrators of date rape.     

Lifestyle illicit drug seizures: A routine ESI-LC-MS method for the identification of sildenafil and vardenafil

For street samples suspected of containing the phosphodiesterase-5 inhibitors sildenafil (Viagra(?)) and/or vardenafil (Levitra(?)), including powders or adulterated herbal supplements, a chemical analysis is needed to provide confirmatory identification of these illegally procured substances. Sildenafil and vardenafil are structurally similar and it is difficult to differentiate between them, as previous mass spectrometric studies have shown the two drugs to produce similar fragmentation patterns. The use of tandem mass spectrometry can produce confirmatory data, but the technique requires a high level of technical expertise. We have developed an electrospray ionization-liquid chromatography-mass spectrometry (ESI-LC-MS) method that allows differentiation between these two structurally similar molecules via in-source fragmentation in combination with an ion trap mass spectrometer. A very stable gas phase ion is formed during in-source fragmentation of vardenafil; the combination of the stability of this ion and the longer residence time for the ion in the ion trap results in a very strong signal. This feature results in a method that can provide clear differentiation between sildenafil and vardenafil while at the same time requiring less expertise from the routine analyst to confirm the presence or absence of the two compounds.     

Migration,citizenship and autochthony: strategies and challenges for state-building in Côte d'Ivoire

Although migration has for some time been an important topic in African studies, the ‘politics of migration’ remain relatively under-examined. While there is a substantial body of literature on migration and economic development, we know much less about the impact of migration on other state-building processes. The upsurge of autochthony discourses throughout much of Africa is a recent phenomenon and an alarming trend that reveals the increased politicisation of migration and the challenge these discourses pose to state-building. This article uses Côte d'Ivoire as a case study to shed light on the complex relationship between migration and state-building. It also provides a fresh perspective on a new chapter in Ivoirian politics as it re-examines this relationship in light of the recent political developments following the 2010 elections. In so doing, it provides new insights into the enduring nature of autochthony, highlighting the contemporary challenges that these discourses pose for both migrants and state-building.