Identification of Opioids and Related Substances using Handheld Raman Spectrometers

This study describes the performance of handheld Raman devices for detecting one hundred opioids and related substances including fentanyl and several analogs. Using a single “parent” device, signatures (spectra) with excellent signal-to-noise ratios were generated using <5 mg of most compounds. The signatures were added to a method (library), which was electronically transferred to three “daughter” devices. The devices were able to discriminate different salt forms and isomers. On average, the daughter devices yielded a true-positive rate of 97.3% for generating an alarm for opioids and were 93.3% effective for correctly identifying the opioid. The devices yielded true-negative, false-positive and false-negative rates of 100%, 0%, and 2.7%, respectively, where false negatives were due to weak signal and fluorescence. These data demonstrate that the parent-daughter electronic transfer method was successful and effective, which permits the ability to develop methods in the laboratory that can be seamlessly pushed out to field devices.     

Positional Asphyxia in Opioid-Related Deaths: Is It Being Overlooked?

The contribution of positional asphyxia in opioid-related deaths is currently unknown. Diagnostic criteria for positional asphyxia include finding the decedent in a position that does not allow for adequate respiration and an inability to extricate themselves from the position due to various conditions. Our primary objective was to assess whether positional asphyxia and the resulting airway compromise were a contributing factor to death due to the toxic effects of opioids. We evaluated 225 deaths where the death scene investigation contained adequate information to evaluate for positional asphyxia and performed a Pearson chi-square test to determine if the proportion of deaths found in an airway compromising position was higher when opioid(s) caused the death. The proportion of decedents found in a potential airway compromising position was greater when the death was related to opioid use (p < 0.0001). Further, narrowing the dataset to decedents who were definitely in an airway compromising position [Yes (24.49%) vs. No (11.02%)] showed a statistically significant association between positional asphyxia and deaths related to opioid use (p = 0.0021). Carefully documenting the position in which the decedent was initially found may be a significant factor in accurate reporting and in harm reduction efforts to decrease the opioid mortality rate.     

Blast Suppression Foam,Aqueous Gel Blocks,and their Effect on Subsequent Analysis of Forensic Evidence*

In addition to having blast mitigation properties, aqueous foam concentrate AFC-380 blast suppression foam is designed to capture aerosolized chemical, biological, and radioactive particles during render-safe procedures of explosive devices. Exposure to aqueous environments and surfactants may negatively affect forensic evidence found at the scene, but the effects of AFC-380 foam and aqueous gel on the preservation and subsequent analysis of forensic evidence have not previously been investigated. Sebaceous finger and palm prints and DNA samples on paper, cardboard, tape, and various metal and plastic items, along with hairs, carpet and yarn fibers, and inks and documents, were exposed to AFC-380 foam. Similar mock evidence was also exposed to a superabsorbent gel of the type found in aqueous gel blocks used for shrapnel containment. Exposure to foam or aqueous gel was associated with a dilution effect for recovered DNA samples, but quality of the samples was not substantially affected. In contrast, exposure to AFC-380 foam or gel was detrimental to development of latent finger and palm prints on any substrate. Neither the hair nor the fiber samples were affected by exposure to either the foam or gel. Indented writing on the document samples was detrimentally affected by foam or gel exposure, but not inks and toners. The results from this study indicate that most types of forensic evidence recovered after being exposed to aqueous gel or blast suppression foam can be reliably analyzed, but latent finger and palm prints may be adversely affected.     

Socially Demoralizing Environments and the Development of the Street Code from Childhood to Emerging Adulthood

This study examines hypotheses regarding patterns of developmental change in street code commitment from childhood through emerging adulthood. It tests whether street code commitment demonstrates developmental stability or if it fluctuates in response to evolving socially demoralizing conditions. Latent growth curve and parallel process models are applied to longitudinal data from an African American sample. Confirmatory factor analysis tests the degree to which neighborhood violence, peer processes, and family hostilities combine to form a latent construct of socially demoralizing environments. Analysis also tests measurement invariance across the study assessment periods. Street code commitment demonstrates a non-linear growth pattern across time. Commitment increases in childhood, peaks in late adolescence, and declines in emerging adulthood. Exposure to demoralizing social environments demonstrates a similar pattern of change characterized by a peak in adolescence followed by a gradual decline. Harsh childhood social environments affect the initial levels but not the growth of the street code. Street code commitment fluctuates in response to contemporaneous environmental conditions. The street code is malleable from childhood through emerging adulthood. Commitment to the street code is not a stable product of socialization or early childhood social environmental exposures. The degree to which individuals embrace the code is largely a function of their current social environment.     

Assessing the Impact of Knowledge and Location on College Students’ Perceptions of Gun Control and Campus Carry Policies: a Multisite Comparison

American Journal of Criminal Justice - Recent incidents of mass shootings in schools have raised questions about the availability of “military-style” firearms and need for campus carry...     

Social Class: Perception and Reality

Middle class is a social construct and a moniker so central to the identity politics of the United States that it has become a persistent part of the rhetoric of both major political parties. This article seeks to understand how the way in which people categorize themselves in social class matches the observable characteristics that might be used to objectively classify them into such groups. This article examines survey data from a national poll and finds that a majority of the respondents consider themselves members of the middle class. While those in the lowest and highest income categories are less likely to categorize themselves as middle class (controlling for other factors), many in these groups also consider themselves middle class.     

European Cooperation on Future Crises: Toward a Public Good?

As crises grow more transnational in origin and effect, managing them effectively will require international cooperation. This article explores the dilemmas inherent to producing common crisis management capacities across national governments. Drawing on the literature related to "international public goods," the article builds an approach for understanding these dilemmas through the lens of collective action and the perverse incentives associated therein. The article applies this approach to cooperation in Europe on an issue that typifies the transnational crisis—the spread of communicable disease—and highlights obstacles to European Union ambitions to build a robust system for disease surveillance and control. Having isolated the obstacles, the article then identifies solutions to facilitate cooperation toward more effectively producing the good in question.     

Political Competition and Local Social Spending: Evidence from Brazil

Electoral theories of democracy imply electoral competition insures accountability. Using data on local elections, socioeconomic factors, and municipal budgets from more than 5,000 municipalities in Brazil for the years 1996, 2000, and 2004, we find that municipalities with more competitive elections allocate less to social spending compared to municipalities with little political competition. We argue that previous theory on political competition and public goods obscures the critical role that financial resources play in shaping the dynamics of social spending and political competition. Municipalities with small budgets lack the resources necessary to engineer convincing electoral victories. Where resources are negligible, voter turnout is low, and incumbents rarely win reelection. Incumbent parties in municipalities with large financial resources win big. Armed with adequate resources, incumbent parties mobilize voters and win by large margins. This new argument and evidence reconcile contradictory findings in the existing literature on competition and public goods.