Development of a methodology for the standardisation and improvement of ‘Smartphone’ photography of patterned bruises and other cutaneous injuries

Human bite-mark analyses can play a prominent role in forensic case investigations, including those involving sexual assault. High-quality photographs routinely secure a link between a bite-mark and an individual's dentition. Access to around the clock forensic photography, however, is often limited, resulting in delay and/or missed opportunities to record valuable evidence. The emergence of Smartphone high-quality photographic technology now provides a previously unimagined opportunity to gather timely forensic photographic evidence. Problems can arise, however, due to the relatively poor quality of the photographs, as a result of many of those taking photographs having received little or no forensic photography training. This study compares unassisted photography with assisted photography, by a specifically developed camera application (App), to provide a standardised method for taking forensic photographs. An App, written in Java, was hosted on the Google Android Operating System, on a Samsung Galaxy SII Smartphone. Twenty-four volunteers participated in a study to photograph a pseudo bite-mark using three methods, (1) unassisted (as a control), (2) assisted by an ABFO No.2 right-angled photographic reference scale and (3) assisted by the App. The App, method (3), was shown to consistently outperform methods (1) and (2), demonstrating greater standardisation and precision (p < 0.001). Analysis of the data showed the extent to which acquiring an accurate photograph depends on the image being orthogonal to the camera. It appears likely that the relatively inaccurate photographs acquired by methods (1) and (2), were as a result of deviation from the plane, orthogonal to the bite-mark. Therefore, the App was successful in ensuring that the camera was both orthogonal and at an appropriate distance, relative to the bite-mark. Thus, the App enhanced the abilities of non-experts to acquire more accurate photographs and created the potential to significantly improve the quality of forensic photographs.     

Enhancing learning in development partnerships

Through an analysis of practical examples and key literature, this article considers what will enhance learning in and between NGOs and other development partners. The authors explore how the types and qualities of relationship currently evolving in the development sector affect learning, drawing predominantly on experiences of relationships between Northern and Southern NGOs. The article identifies those aspects of relationships that foster learning and those that inhibit it, and offers recommendations to strengthen learning. The authors highlight the relevance of, the challenges posed by, and the potential of partnership work, as well as the impact of accountability demands, procedures, and processes on organisational relationships and on learning.     

An experimental validation study of the SASSI: Predicting alcohol related behavior in law enforcement applicants

This investigation evaluated the validity and utility of two versions of the Substance Abuse Subtle Screening Inventory (SASSI, SASSI-2; Miller, 1988, 1996) for determining alcohol related risks among law enforcement applicants. Three hundred and seventy applicants were assessed in two separate studies to determine the degree to which SASSI classification corresponds with self-reported a) number of drinks per month, b) admissions to having recently driven while intoxicated, and c) adminissions to having ever been worried about one's drinking behavior. Analyses revealed a pattern of poor discrimination for both versions of the SASSI, raising concerns regarding its use as a clinical assessment tool.     

Recent human sexual dimorphism study using cephalometric plots on lateral teleradiography and discriminant function analysis

Abstract:  The examination of skull sexual dimorphism has been the subject of numerous morphologic and craniometric studies, but the disadvantage of these studies is that they are dependent on the experience of the operator and involve subjectivity. In 1996, a team from Taiwan refined the methods enabling the sex of an individual to be determined using cephalometric plots made from lateral teleradiography. To validate their work using a European population, 114 dry skulls (59 men and 55 women) were examined. Cephalometric plots were made on lateral teleradiography with an orthodontic software and 18 cephalometric variables were analyzed. Sex was determined with 95.6% accuracy using the 18 variables discriminant function. A subset of eight variables was selected and could predict sex with the same accuracy. In conclusion, it can be said that skull-sexing methods using lateral teleradiography seem always suitable but the most indicative variables could differ relative to the ethnic population concerned.