A comparison of Demirjian's four dental development methods for forensic age assessment

The aim of this study was to determine the comparative accuracy of Demirjian's four dental development methods for forensic age estimation in the Western Australian population. A sample comprising 143 individuals aged 4.6 to 14.5 years were assessed using Demirjian's four methods for dental development (original 7-tooth: M(2), M(1), PM(2), PM(1), C, I(2), and I(1); revised 7-tooth: M(2), M(1), PM(2), PM(1), C, I(2), and I(1); 4-tooth: M(2), M(1), PM(2), and PM(1); and an alternate 4-tooth: M(2), PM(2), PM(1), and I(1)). When comparing all four methods, the 4-tooth method overestimated age in both males and females by 0.04 and 0.25 years, respectively. The original 7-tooth was least accurate for males, while the original 7-tooth, the revised 7-tooth, and the alternate 4-tooth were unsuitable for females. Therefore, we recommend the 4-tooth method to be used for forensic age estimation in Western Australian males and females, as it has the lowest overall mean deviation and the highest accuracy.     

CHILD CUSTODY DISPUTES IN FAMILIES OF MUSLIM TRADITION

Islam is one of the fastest growing religions in America and by all accounts, there are 2.35 million Muslims in the country today. Muslims separate and divorce at rates consistent with the general population and almost half of those born in the United States are in relationships with non‐Muslims. It is not surprising that issues of religious education take center stage in child custody disputes. In addition, 64% of foreign Muslims cite the U.S. disrespect for Islam as the overwhelming factor in their resentment for America and Americans and they constitute the greatest potential risk for child abduction of American Muslim children. As more Muslim Americans separate and access the family law courts, we as lawyers, judges and child custody experts must be prepared to address the unique aspects of religion and foreign travel that these families present.     

Statistical Approaches to Type Determination of the Ejector Marks on Cartridge Cases

While type determination on bullets has been performed for over a century, type determination on cartridge cases is often overlooked. Presented here is an example of type determination of ejector marks on cartridge cases from Glock and Smith & Wesson Sigma series pistols using Naïve Bayes and Random Forest classification methods. The shapes of ejector marks were captured from images of test‐fired cartridge cases and subjected to multivariate analysis. Naïve Bayes and Random Forest methods were used to assign the ejector shapes to the correct class of firearm with success rates as high as 98%. This method is easily implemented with equipment already available in crime laboratories and can serve as an investigative lead in the form of a list of firearms that could have fired the evidence. Paired with the FBI's General Rifling Characteristics (GRC) database, this could be an invaluable resource for firearm evidence at crime scenes.     

Validation and uses of a Y-chromosome STR 10-plex for forensic and paternity laboratories

Y-chromosome short tandem repeats (Y-STRs) provide valuable information in cases of rape and questioned paternity, and they allow for the genetic identification of male lineages. The present study validated a Y-STR 10-plex on the ABI PRISM 3100 Genetic Analyzer for use in forensic and paternity laboratories at Orchid Cellmark. Following optimization of the polymerase chain reaction, father-son pairs were analyzed to ensure that each pair generated identical haplotypes. This study demonstrated that the 10-plex is sensitive to 0.125 ng of input DNA and that female samples mixed with male samples did not interfere with Y-STR haplotyping. In a sample of 525 males, there were three instances of locus multiplication, two at DYS19 and one at DYS435. Overall, haplotype diversity was 0.996, suggesting that the 10-plex can effectively distinguish among male lineages.     

A Lingering Question of Priorities: Athletic Budgets and Academic Performance Revisited1

Many organization theories suggest that divergent goals can hamper an organization's pursuit of its primary mission. An earlier version of this article analyzed the effect of the pursuit of divergent goals on American public schools. This is an update of the original article that adds two years of data to the original study. Using an educational production function, this article assesses the relationships between athletic budgets and various aggregate measures of academic performance. Controlling for various known components of academic performance, athletic budgets have a significant negative relationship with academic performance. Schools that devote a large amount of resources to athletic budgets have lower levels of academic achievement. A focus on athletics seems to institutionalize goals that conflict with the schools’ academic missions.     

The contribution of beneficiary participation to development project effectiveness

Criticism of development projects is widespread, and blame for disappointing results is cast in many directions. One line of criticism which has become quite strong in the recent development literature is that development projects are too top-down and need to be more bottom-up (e.g. Maguire, 1981). Projects should involve more participation by beneficiaries. In fact, some would argue that real development, by definition, must involve beneficiaries in their own improvement (e.g. Gran, 1983a,b). Without participation the people may benefit but not develop from a project. Thus participation has intrinsic value. As the recognition of the value of public, popular, beneficiary, or community participation has increased, so has the range of what is meant by participation. Some authors have expanded the concept to mean empowerment and capacity-building, sometimes including institution-building. In this paper we do not attempt to redefine participation per se. but aim instead to make an inventory of the principal concepts that have evolved in the literature so far, elicit a general model of participatory development projects, deduce the central implicit hypotheses from this literature on the relationship between participation and project effectiveness, and statistically test these hypotheses from the empirical evidence provided by AID'S series of 52 Impact Evaluation Reports. Our major question is how much does beneficiary participation contribute to project effectiveness?