An Optimized Centrifugal Method for Separation of Semen from Superabsorbent Polymers for Forensic Analysis

Connection of a perpetrator to a sexual assault is best performed through the confirmed presence of semen, thereby proving sexual contact. Evidentiary items can include sanitary napkins or diapers containing superabsorbent polymers (SAPs), complicating spermatozoa visualization and DNA analysis. In this report, we evaluated the impact of SAPS on the current forensic DNA workflow, developing an efficient centrifugal protocol for separating spermatozoa from SAP material. The optimized filtration method was compared to common practices of excising the top layer only, resulting in significantly higher sperm yields when a core sample of the substrate was taken. Direct isolation of the SAP‐containing materials without filtering resulted in 20% sample failure; additionally, SAP material was observed in the final eluted DNA samples, causing physical interference. Thus, use of the described centrifugal‐filtering method is a simple preliminary step that improves spermatozoa visualization and enables more consistent DNA yields, while also avoiding SAP interference.     

Al Qaeda Versus Big Brother: Anxiety About Government Monitoring and Support for Domestic Counterterrorism Policies

Explanatory models of attitudes toward U.S. domestic counterterrorism policy routinely incorporate individual concern over terrorism, but uniformly disregard concern about the government??s use of domestic surveillance. Indeed, one of the most prominent works of this kind explicitly argues that ordinary Americans will not perceive that government monitoring targets people like themselves and thus domestic surveillance programs will not generate anxiety. We question this assumption on theoretical and historical grounds. Our research uses a unique probability sample survey to demonstrate that significant portions of ordinary Americans feel anxious about domestic government monitoring. Moreover, the results show that anxiety about government monitoring negatively relates to attitudes toward domestic counterterrorism policies. Although never included in previous models, and even plainly dismissed as irrelevant, felt anxiety about government monitoring importantly predicts attitudes about domestic counterterrorism policies.     

Electoral contexts that impede voter coordination

An electorate can effectively coordinate on the viable parties in its district, or a relatively large proportion of its voters may “waste” their votes on parties that fail to obtain office. Avoiding wasted votes can be more or less difficult depending on several characteristics of the electoral context. Unfortunately, many of the features of electoral contexts hypothesized to cause vote wastage have been tested piecemeal on only a handful of (non-random) cases and/or with data inappropriately aggregated to the national, rather than the district, level. Based on results from 2007 districts in 183 lower chamber elections across 21 countries, we find evidence that new electoral rules, the entry of new parties, past electoral volatility, and high district magnitudes are all likely to make coordination a challenge, with entry by new parties having the largest, most consistent effect.     

Fatalities Due to Failure of Continuous Subcutaneous Insulin Infusion Devices: A Report of Six Cases

Diabetes mellitus type 1 and type 2 are diseases characterized by impaired regulation of blood glucose due to decreased insulin production and insulin resistance, respectively. Management of diabetes mellitus often requires injection of exogenous insulin. Continuous subcutaneous insulin infusion (CSII or insulin pump) is a diabetes treatment modality utilizing a device to aid in regulation of glycemic control. Malfunctions in device components can have rare fatal consequences. Described in this report are six fatalities due to one such malfunction, the failure of plastic cannulas of CSII devices to penetrate the skin and deliver insulin, resulting in fatal diabetic ketoacidosis (DKA). The cases derive from four different death investigation systems. For each case, scene and autopsy findings are presented, as well as selected toxicology and histology findings. These cases illustrate the importance of careful examination of CSII devices in death investigations and introduce a discussion on discrepant manner of death classifications.     

A God of Vengeance and of Reward? Voters and Accountability

Theories of democratic politics prize congruence between citizens’ preferences and their elected representatives’ actions in office. Elections are a critical means for achieving such policy congruence, providing voters the opportunity to chasten representatives who are out of step with constituent preferences and to reward the faithful. Do voters act this way? Recent studies based on observational data find they do, but these data are somewhat limited. We employ a survey experiment to estimate the extent to which information about policy congruence affects voters’ evaluations of representatives. We informed some subjects how often their member of Congress’s voting decisions match their own stated preferences on the same policies. We find that information about congruence enhances accountability by affecting constituent evaluations of representatives and may also affect citizens’ propensity to participate in upcoming elections.     

America’s most wanted criminals: comparing cybercriminals and traditional criminals

Reports of cybercrime have escalated over the past decade. While these crimes have increased, our understanding about the dynamics surrounding cyber offenders has not kept pace. Few studies have considered the characteristics of serious cyber criminals in comparison to other types of criminals. To fill this void in the literature, we examine a sample of cybercriminals appearing on the FBIs Most Wanted List and compare the characteristics of these offenders to other most wanted offenders. Results suggest that the most wanted cyber offenders are similar to other offenders in that it is a male-dominated offense category, but they are different from other offenders in that they are younger and more likely to exhibit certain types of physical and lifestyle characteristics. Implications for policy and future research are provided.     

Conclusion: prospects for analysing committees in comparative perspective

ABSTRACT

While theories of committees in the U.S. Congress can continue to play a central role in the still-growing comparative study of committees, they require careful, frequent modification. Moreover, more fruitful study of committees may require a wider framework, recognising more fully that committees are institutions embedded in wider social structures.