The Capability of Raman Microspectroscopy to Differentiate Printing Inks

This study applies Raman microspectroscopy to differentiate the chemical components in printing inks of different brands, colors, and type using the 532 nm and 785 nm excitation wavelengths. Spectra were collected from 319 inks (78 inkjet, 76 toner, 79 offset, and 86 intaglio) representing various colors. Comparisons were performed to calculate discrimination capability percentages for each ink type. Overall, Raman microspectroscopy differentiates according to the following hierarchy: intaglio (96%), inkjet (92%), offset (90%), and toner (61%). The ability of Raman microspectroscopy to differentiate between same‐colored inks from different brands was dependent on the color and ink analyzed. Based on ink color, the discrimination capability ranged from 75 to 94% (inkjet), 0 to 86% (toner), and 0 to 77% (offset). Copper phthalocyanine was detected in cyan inks and various intaglio inks, while carbon black was identified in black inkjet, offset, and intaglio inks.     

The Impact of Field Court Attendance Notices on Property Crime in New South Wales,Australia

Objectives

This paper investigates the impact of Field Court Attendance Notices (FCANs) on rates of property crime in New South Wales (NSW), Australia. FCANs are used for relatively minor offenses, are issued ‘on the spot’, and provide an alternative to the time consuming process of arresting an alleged offender and taking them to the police station for processing. Despite their use in NSW for over 20 years, this study is the first to evaluate their impact on crime.

Methods

We use data provided by the NSW Bureau of Crime Statistics and Research, and the Australian Bureau of Statistics. We specify a general dynamic panel data model estimated via the Arellano and Bond (Rev Econ Stud 58:277–297, 1991) estimator, specifically the first-differenced twostep generalised method of moments (GMM) estimator.

Results

For property crime as a whole, in both the short- and long-run, we find no significant relationship between the use of FCANS and levels of offending. However, when offending rates are disaggregated into 11 sub-categories, we find that in the short-run an increase in the use of FCANs leads to statistically significant decreases in the rate of crime for five of the sub-categories offenses considered (break and enter dwelling; motor vehicle theft; steal from motor vehicle; steal from retail store and; steal from dwelling). The long-run results are largely consistent with the short-run results in terms of their signs and statistical significance, suggesting that the effects persist.

Conclusions

The empirical analysis presented in this paper suggests that the use of FCANs is an effective and potentially efficient policing strategy for a subset of property offenses, in that offenders can be processed at lower cost and long-run rates of certain crimes reduced.

     

A Molecular Method to Detect Wound Cells in Bloodstains Resultant of Sharp Force Injuries for Crime Scene Reconstruction

Previous research by the authors on an animal model showed that bloodstains can contain additional information about their somatic origin in the form of wound cells. Bloodstains produced by a gunshot wound to the head were distinguished from bloodstains produced by a gunshot wound to the chest by testing the stains for a brain microRNA marker. In this study, the effectiveness of the technique was examined on blood drops shed externally from a stab wound to the liver of rat carcasses. Specifically, investigations were conducted on the liver microRNA marker, rno‐mir‐122‐3p, with the QIAGEN miScript System, and PCR analysis. Between the two stabbing methods used, 67% of the scalpel blades and 57% of the blood drops tested positive for rno‐mir‐122‐3p; however, other samples tested negative giving inconclusive results as to the wound‐of‐origin. The amount of the liver cells in the bloodstains appeared to be related to the extent of trauma.     

Military Justice: Case Processing and Sentencing Decisions in America’s “Other” Criminal Courts

A wealth of criminological research examines punishment outcomes in state and federal courts, but virtually no research examines the thousands of defendants punished in the military justice system each year. Military courts are characterized by unique case processing norms and distinctive socio-cultural influences that shape punitive decision-making in key ways. The current study provides a broad, systematic analysis of the correlates of criminal case processing in this rarely examined court context. It analyzes a large sample of Air Force court-martial cases, evaluating the evidence for gender and racial/ethnic disparities and the influence of military-specific considerations. Findings indicate that some factors, like offense seriousness, exert influences that are largely consistent with the civilian court literature, but others including gender, race/ethnicity and case processing decisions operate in ways that are particular to military courts. Results are interpreted in light of contemporary sentencing theoretical perspectives.     

Two Novel Methods for Enhancing Postmortem Fingerprint Recovery from Mummified Remains

Postmortem fingerprint collection is a routine part of many forensic death investigations. Although the production of postmortem prints is usually straight forward, several obstacles and scenarios can make the collection difficult. A common challenge occurs when finger pads are mummified. Several current techniques allow for softening and rehydration of mummified finger pads; however, despite the employment of such techniques, the production of adequate postmortem fingerprints can remain elusive. The authors present two techniques that can improve the chances of obtaining suitable fingerprints from mummified remains. The “baby powder method” involves applying a cornstarch‐based powder, such as baby powder, onto the darkened and mummified finger pads, to allow better visualization of the fingerprint detail. The “transillumination method” involves carefully dissecting away the tissues underlying the finger pad, followed by placement of a bright light source underneath the finger pad, such that the finger ridge pattern is illuminated.     

Disaggregating Mass Public Shootings: A Comparative Analysis of Disgruntled Employee,School, Ideologically motivated,and Rampage Shooters

This study compares the demographic, background, motivation, and pre‐event and event‐level behaviors across four types of mass public shooters: disgruntled employee, school, ideologically motivated, and rampage offenders. Using a database containing detailed information on 318 mass public shootings that occurred in the United States between 1966 and 2017, we find systematic differences in the characteristics, motivations, target selection, planning, and incident‐level behaviors among these offenders. The results show that ideologically motivated shooters to be the most patient, and methodical, and as a result the most lethal. Conversely, disgruntled employees, who are driven by revenge, tend to have little time to plan and consequently are the least lethal shooters. These, among other differences, underscore the need for prevention strategies and policies to be tailored to specific types of offenders. Furthermore, the results also highlight commonalities across offender type, suggesting that the social and psychological pathways to violence are universal across offenders.     

Adjudicating Executive Privilege: Federal Administrative Agencies and Deliberative Process Privilege Claims in U.S. District Courts

Government transparency is a key component of democratic accountability. The U.S. Congress and the president have created multiple legislative avenues to facilitate executive branch transparency with the public. However, when the executive branch withholds requested information from the public, the federal judiciary has the power to determine whether agencies must release documents and information to requestors. When enforcing standards of executive branch transparency, judges must balance concerns of executive autonomy and judicial intrusion into administrative decisionmaking. While much judicial scholarship focuses on the decisionmaking on high courts, in the U.S. context, federal district courts play a key role in adjudicating transparency disputes. In this article, I examine case outcomes in disputes involving agency claims of deliberative process privilege over internal agency documents litigated between 1994 and 2004. I find that U.S. federal district courts largely defer to administrative agencies in transparency disputes. However, factors such as agency structure and the congruence between judicial and administrative agency policy preferences influence whether federal judges require executive branch officials to release requested information.     

Adolescent Sexual Onset: An Intergenerational Analysis

Adolescents have begun to initiate sexual activity at increasingly early ages in the past few decades. Using a sample of 2,494 adolescents from the National Longitudinal Survey of Youth (NLSY97), structural and parental process variables were examined in the prediction of sexual onset. Results indicated that the age at which youth initiate sexual intercourse is related to the structural characteristics of their grandmothers and mothers, as well as puberty, gender, and race. There is support for partial mediation of the effects of these grandmother characteristics via mother characteristics and parental process. Results are discussed within the framework of the life course perspective and provide support for the importance of previous generations in the explanation of adolescent sexual behavior. Implications for families and adolescents are also addressed. Katherine A. Johnson, is a doctoral student at the University of Nebraska–Lincoln. Her research interests include the study of crime, gender, and high-risk youth using both qualitative and quantitative methodology. Kimberly A. Tyler, is an associate professor in the Department of Sociology at the University of Nebraska–Lincoln. Her research interests include homelessness, child abuse and neglect, victimization, and high-risk behaviors among adolescents and youth.