Inference of human geographic origins using Alu insertion polymorphisms

The inference of an individual's geographic ancestry or origin can be critical in narrowing the field of potential suspects in a criminal investigation. Most current technologies rely on single nucleotide polymorphism (SNP) genotypes to accomplish this task. However, SNPs can introduce homoplasy into an analysis since they can be identical-by-state. We introduce the use of insertion polymorphisms based on short interspersed elements (SINEs) as a potential alternative to SNPs. SINE polymorphisms are identical-by-descent, essentially homoplasy-free, and inexpensive to genotype using a variety of approaches. Herein, we present results of a blind study using 100 Alu insertion polymorphisms to infer the geographic ancestry of 18 unknown individuals from a variety of geographic locations. Using a Structure analysis of the Alu insertion polymorphism-based genotypes, we were able to correctly infer the geographic affiliation of all 18 unknown human individuals with high levels of confidence. This technique to infer the geographic affiliation of unknown human DNA samples will be a useful tool in forensic genomics.     

A Neo‐Institutional Account of Prison Diffusion

Interest in legal innovations, particularly in the criminal law realm, often centers on an innovation's emergence, but not its subsequent diffusion. Typifying this trend, existing accounts of the prison's historical roots persuasively explain the prison's “birth” in Jacksonian‐Era northern coastal cities, but not its subsequent rapid, widespread, and homogenous diffusion across a culturally, politically, and economically diverse terrain. Instead, this study offers a neo‐institutional account of the prison's diffusion, emphasizing the importance of national, field‐level pressures rather than local, contextual factors. This study distinguishes between the prison's innovation and early adoption, which can be explained by the need to replace earlier proto‐prisons, and its subsequent adoption, particularly in the South and frontier states, which was driven by the desire to conform to increasingly widespread practices. This study further attributes the isomorphic nature of the diffusion to institutional pressures, including uncertainty surrounding the new technology, pseudoprofessional penal reformers and their claims about competing models of confinement, and contingent historical factors that reinforced these institutional pressures. This study illustrates the importance of distinguishing between the motivations that initiate criminal law innovations and those that advance their diffusion.     

TEMPEST and the Bank of England

Since the major British banks first purchased computers in the 1960s, they have been concerned with the security challenges that these machines presented. One of the most potent risks was TEMPEST, the discovery that computers emitted radiation which could reveal the content of information processed by them, even if it had been encrypted. Archival material recently uncovered within the Bank of England’s archives from the mid-late 1970s is presented here to provide a first look at how the Bank evaluated the credibility of the threat posed by TEMPEST and how it sought to manage this new risk.     

A Comparison of Chemical Enhancements for the Detection of Latent Blood,,

Luminol, Bluestar^®, and Hemascein^® were tested to compare detection sensitivities to latent blood. Untreated, EDTA‐treated human blood, and a catalytically similar blood substitute were diluted (neat to 1:1,000,000) and pipetted onto a variety of substrates. Luminol and Bluestar^® performed similarly on all surfaces and fabrics. Hemascein^® yielded poor results on wood surfaces, but performed well in the detection of latent blood on fabrics. Results from untreated, EDTA‐treated, and synthetic blood results indicate that EDTA‐treated blood is similar or slightly less sensitive than untreated blood at all dilutions and on all substrates, and the synthetic blood is less sensitive than real blood, but consistent in detection threshold and thus is useful as a training aid. Additionally, some foods and household chemicals that have previously been shown to cross‐react were tested with Bluestar^®, Hemascein^®, and luminol. Hemascein^® cross‐reacted with many substances, while both luminol reagents were more discriminating.     

Serious about Change: A Gendered Examination of the Impact of Offense Type on Parole Success

Female offender populations are growing at an unprecedented rate. The present study examines gender differences among a large sample of male and female offenders as related to seriousness of their offense and success on parole. Data analyzed were originally collected from a random sample of parole case files in California. Results revealed that although gender does significantly impact parole success, seriousness of the offense does not. Other significant factors include age at release on parole, criminal history, and measures of stability upon release. The need for wrap-around services, comprehensive treatment models, and funding for gender-specific services are discussed.