Validation of the use of a commercially available kit for the identification of prostate specific antigen (PSA) in semen stains

PSA is currently being used to detect and monitor quantitatively the development of prostate cancer by serum levels of PSA and has also been found to be present in high concentrations in semen. Elegantly simple, sensitive, and reproducible methods have been developed for analysis of the presence of PSA, including the Tandem-E PSA Immunoenzymetric Assay. The most common procedures for the forensic identification of semen have focused on the microscopic detection of sperm, acid phosphatase activity, and immunoelectrophoretic methods for the detection of PSA. Although these methods have been used for many years, there are problems associated with each method. The Tandem-E PSA Immunoenzymetric Assay detected PSA in 100% of the forensic casework fabric samples, 80% of the forensic casework vaginal swabs and 100% of the vasectomized individuals tested. The cut-off value was determined to be 1.77 ng/mL. These results indicate that this method can be used to identify the presence of semen in forensically significant specimens.     

Race, conventional crime, and criminal justice: The declining importance of skin color

Blacks in the United States are arrested, prosecuted, convicted, and incarcerated in numbers disproportionate to their percentage of the population. One explanation is that racial discrimination against Blacks pervades the American system of criminal justice. This study examined the nature and extent of racial discrimination in the criminal justice system by evaluating five propositions using data from extant literature. Little evidence was found to support the allegation that the criminal justice system systematically discriminates against Blacks.     

Public Sector Labour Relations in Western Australia – An Overview

The election of a LiberalNational Coalition government in 1993 heralded a period of significant and sustained change in Western Australian public sector labour relations. As legislator, the Coalition government embarked upon a program to decentralise and deregulate the Western Australian industrial relations system; as an employer, the government has had to respond to the economic imperatives which have faced most employers in recent years. The result has been a period of major change in the public sector – employment levels have declined as services have been privatised or contracted out; the proportion of non-permanent and part-time employees has risen significantly. Individual workplace agreements have been introduced; individualised performance-related management and reward systems have increased; and the scope for union involvement has diminished, as has the level and density of union membership. The experience of the public sector therefore reflects many of the workplace changes that are also found in the private sector. It also brings the government's industrial relations policies into sharper focus.     

Attrition in the RAND Health Insurance Experiment: a response to Nyman

In a prior article in this journal, John Nyman argues that the effect on health care use and spending found in the RAND Health Insurance Experiment is an artifact of greater voluntary attrition in the cost-sharing plans relative to the free care plan. Specifically, he speculates that those in the cost-sharing plans, when faced with a hospitalization, withdrew. His argument is implausible because (1) families facing a hospitalization would be worse off financially by withdrawing; (2) a large number of observational studies find a similar effect of cost sharing on use; (3) those who left did not differ in their utilization prior to leaving; (4) if there had been no attrition and cost sharing did not reduce hospitalization rates, each adult in each family that withdrew would have had to have been hospitalized once each year for the duration of time they would otherwise have been in the experiment, an implausibly high rate; (5) there are benign explanations for the higher attrition in the cost-sharing plans. Finally, we obtained follow-up health-status data on the great majority of those who left prematurely. We found the health-status findings were insensitive to the inclusion of the attrition cases.     

International relations in Indonesia: historical legacy, political intrusion, and commercialization

This paper is about the development of international relations(IR) as a field of study in Indonesian universities. It arguesthat IR as a discipline has been encountering a paradox. Onthe one hand, while the discipline has been increasingly heldin high esteem by students, marked by an increasing number ofapplicants to IR departments across the country; on the otherhand, IR scholars show too little commitment to research andpublication for the development of the discipline; and if theydo publish, the quality of writing is generally poor. This articleindicates that the paradox of teaching IR in Indonesia has muchto do with historical legacies and political intrusion, as wellas an economic environment in which universities are increasinglydriven toward commercial activities. All these factors shapethe current development of social science in general, and IRin particular. Received for publication August 28, 2008. Accepted for publication October 7, 2008.     

Validation of Tool Mark Comparisons Obtained Using a Quantitative,Comparative, Statistical Algorithm

Abstract: A statistical analysis and computational algorithm for comparing pairs of tool marks via profilometry data is described. Empirical validation of the method is established through experiments based on tool marks made at selected fixed angles from 50 sequentially manufactured screwdriver tips. Results obtained from three different comparison scenarios are presented and are in agreement with experiential knowledge possessed by practicing examiners. Further comparisons between scores produced by the algorithm and visual assessments of the same tool mark pairs by professional tool mark examiners in a blind study in general show good agreement between the algorithm and human experts. In specific instances where the algorithm had difficulty in assessing a particular comparison pair, results obtained during the collaborative study with professional examiners suggest ways in which algorithm performance may be improved. It is concluded that the addition of contextual information when inputting data into the algorithm should result in better performance.     

Transformational Leadership and Public Service Motivation: Driving Individual and Organizational Performance

Despite growing evidence about prosocial motivations and their effects on employee behavior, how can new public service motivation research translate into more effective management practices—which, so far, regrettably remain underdeveloped? Increasingly, public service motivation studies have moved from understanding what motivates public servants to exploring how public service motives influence performance. Similarly, greater attention is now paid to the practices of transformational leadership. Drawing on concepts from transformational leadership, this essay explores how managers can harness the positive aspects of public service motivation to enhance employee and organizational performance and outlines strategies that can help managers incorporate public service motivation values across management systems.