A new approach to amino acid racemization in enamel: testing of a less destructive sampling methodology

Aspartic acid racemization has been found to be an accurate measure of age at death for recent forensic material. This paper examines the practicality of using acid etching of the tooth surface to extract amino acids from the enamel for racemization analysis. By serial etching of the tooth and contamination of the teeth with bovine serum albumin prior to etching, the ability of etching to remove contamination was assessed. The destructiveness of the method was visualized and quantified using micro-computed tomography (micro-CT). By bleaching the teeth and by deeper etching it was possible to obtain more consistent values. While etching had little effect on the enamel at the macroscale, it did have an impact at the microscale. The quantities of enamel removed varied depending upon the tooth morphology, but were not large. Acid etching of enamel thus appears to be a promising new method for extracting proteins for amino acid racemization age estimation noninvasively.     

The impact of racial slurs and racism on the perceptions and punishment of violent crime

When a crime is committed by an individual of one race against an individual of another race, there is the possibility that the crime is a hate crime. Legislation often mandates harsher penalties for perpetrators convicted of crimes determined to be hate crimes, yet this determination is difficult to make. This study used vignettes of violent crimes to examine how the races of the perpetrators and victims, the severity of the assault, and the use of racial slurs by the perpetrators would affect perceptions of the crimes as "hate crimes," victim blaming, and sentencing recommendations. Results showed that each of these factors affected participants' perceptions and punishments of violent crime. Participants' levels of racism were an additional factor. These results contribute to the understanding of how crimes in which the perpetrator's and victim's races differ are perceived.     

From Policy to Practice: From Ideas to Results,From Results to Trust

Few areas of public administration have been more discouraging, over a longer period of time, than the struggle to build public trust in government's work. However, new research suggests that public administrators can build trust by improving the results they produce for citizens. Practical, practicable steps can produce big improvements: improving government's focus on citizens' needs; engaging employees; focusing on fairness; and, especially, concentrating on the delivery of public services at the “retail” level. Citizens, research shows, can discriminate among levels of government, the administration of different programs in different functional areas, and the work of individual administrators. That provides strong hope for improving trust, in an era when too often government appears too untrustworthy.     

Suicidal Fatality from Azide Ingestion

A 35-year-old man ingested an unknown amount of sodium azide and died within 2 h. The postmortem interval was 3 days. No alcohol or drugs were found in the blood and urine. Azide was derivatized in the peripheral blood, urine, and vitreous fluid with propionic anhydride. A portion of the headspace was injected onto a gas chromatograph with a nitrogen–phosphorus detector. Azide was quantitated in the peripheral blood (1.1 μg/mL), urine (7.5 μg/mL), and vitreous (43 μg/mL). The vitreous appears to be a better fluid for azide screening because of slower degradation.     

Building Secure Elections: E-Voting, Security, and Systems Theory

The increased use of information technology promises to revolutionize both the provision of government services and the vibrancy of democracy. In the aftermath of the Florida voting controversy during the 2000 presidential election, governments have placed their faith in technology, adopting e-voting machines that offer enhanced voter convenience and eliminate the need for subjective recounts. However, the same underlying assumptions that apply to e-government theory do not apply to e-voting because of the severity of consequences if failure occurs and the loss of transparency traditionally associated with the voting process. A more useful theoretical guide is systems theory, which deals with complex, high-risk systems. This literature has been largely overlooked by adopters of e-voting technology, even though the practical criticisms of e-voting made by computer security specialists reflect an essentially systems theory perspective.