Police research technology: Functional relations between juvenile citations and criminal offenses

In a multiple-reversal time-series design, additional plainclothes youth guidance officers were assigned to patrol and to issue juvenile warning citations in one of two target areas during school hours on weekdays. The presence and activity of these officers resulted in modest but consistent reductions in the number of criminal incidents reported in the target area. An untreated control area showed no consistent changes in the rates of criminal incidents. Issuance of juvenile citations appears to be a modestly effective crime control technology which may be implemented in a cost-efficient manner.     

A method for the determination of syringe needle punctures in rubber stoppers using stereoscopic light microscopy

The ability to accurately determine the number of syringe needle penetration holes through the rubber stoppers in pharmaceutical vials and rubber septa in intravenous (i.v.) line and bag ports has been a critical factor in a number of forensic cases involving the thefts of controlled substances or suspected homicide by lethal injection. In the early 1990s, the microscopy and microanalysis group of the U.S. Food and Drug Administration's Forensic Chemistry Center (FCC) developed and implemented a method (unpublished) to locate needle punctures in rubber pharmaceutical vial stoppers. In 1996, as part of a multiple homicide investigation, the Indiana State Police Laboratory (ISPL) contacted the FCC for information on a method to identify and count syringe needle punctures through rubber stoppers in pharmaceutical vials. In a joint project and investigation using the FCC's needle hole location method and applying a method of puncture site mapping developed by the ISPL, a systematic method was developed to locate, identify, count, and map syringe punctures in rubber bottle stoppers or i.v. bag ports using microscopic analysis. The method requires documentation of punctures on both sides of the rubber stoppers and microscopic analysis of each suspect puncture site. The final result of an analysis using the method is a detailed diagram of puncture holes on both sides of a questioned stopper and a record of the minimum number of puncture holes through a stopper.     

Development and Validation of a Virtual Examination Tool for Firearm Forensics, ,

The transition from 2D imaging to 3D scanning in the discipline of firearms and toolmark analysis is likely to provide examiners an unprecedented view of microscopic surface topography. The digital examination of measured 3D surface topographies has been referred to as virtual microscopy (VM). The approach offers several potential advantages over traditional comparison microscopy. Like any new analytic method, VM must be validated prior to its use in a crime laboratory. This paper describes one of the first validation studies of virtual microscopy. Fifty‐six participants at fifteen laboratories used virtual microscopic tools to complete two proficiency‐style tests for cartridge case identification. All participating trained examiners correctly reported 100% of the identifications (known matches) while reporting no false positives. The VM tools also allowed examiners to annotate compared surfaces. These annotations provide insight into the types of marked utilized in comparative analysis. Overall, the results of the study demonstrate that trained examiners can successfully use virtual microscopy to conduct firearms toolmark examination and support the use of the technology in the crime laboratory.     

Detection of Acetaminophen–Protein Adducts in Decedents with Suspected Opioid–Acetaminophen Combination Product Overdose

Acetaminophen overdose is a leading cause of drug‐induced liver failure in the United States. Acetaminophen–protein adducts have been suggested as a biomarker of hepatotoxicity. The purpose of this study was to determine whether protein‐derived acetaminophen–protein adducts are quantifiable in postmortem samples. Heart blood, femoral blood, and liver tissue were collected at autopsy from 22 decedents suspected of opioid–acetaminophen overdose. Samples were assayed for protein‐derived acetaminophen–protein adducts, acetaminophen, and selected opioids found in combination products containing acetaminophen. Protein‐derived APAP‐CYS was detected in 17 of 22 decedents and was measurable in blood that was not degraded or hemolyzed. Heart blood concentrations ranged from 11 ng/mL (0.1 μM) to 7817 ng/mL (28.9 μM). Protein‐derived acetaminophen–protein adducts were detectable in liver tissue for 20 of 22 decedents. Liver histology was also performed for all decedents, and no evidence of centrilobular hepatic necrosis was observed.     

Terrorism and affinity of nations

Public Choice - This article investigates whether a country’s political proximity to the United States, France, Germany, and the United Kingdom exposes the country to terrorist attacks. We...     

The many faces of counterterrorism: an introduction

This article sets the stage for the special issue by describing the many faces of counterterrorism policy. The article highlights some key concepts??e.g., domestic and transnational terrorism, and alternative types of counterterrorism policies??that are applied throughout the special issue. The two data sets exploited in this issue??s empirical contributions are also described. Next, each of the 12 articles is introduced and briefly summarized. The main conclusions and insights of the articles are distilled and placed in perspective.     

Parent Perceptions of Participating in a Program for Adolescents Who Are Violent at Home

Child-to-parent abuse (CPA) is an under-addressed form of family violence and relatively few resources are available for families experiencing CPA. The Step-Up program is a CPA-specific, family-level, group format intervention program in King County, Washington. Qualitative and long-term research on CPA intervention programs is lacking, and it is unknown how parents perceive the effects of participating in Step-Up after program completion. Fifteen parents who completed Step-Up with their adolescent child participated in individual semi-structured telephone or in-person interviews. Participants were asked about their perceptions of the effects of Step-Up participation, how they and their child have used skills taught in the program, and which program features were most and least effective. Participants expressed largely positive effects of participating in Step-Up, including decreased violent behavior by their adolescents and improved parent-child relationships. Recommendations for improving Step-Up included the inclusion of follow-up sessions to further reinforce behavior change and increased program accessibility.