Inferring the Number of Contributors to Complex DNA Mixtures Using Three Methods: Exploring the Limits of Low‐Template DNA Interpretation

In forensic DNA casework, the interpretation of an evidentiary profile may be dependent upon the assumption on the number of individuals from whom the evidence arose. Three methods of inferring the number of contributors—NOCIt, maximum likelihood estimator, and maximum allele count, were evaluated using 100 test samples consisting of one to five contributors and 0.5–0.016 ng template DNA amplified with Identifiler^® Plus and PowerPlex^® 16 HS. Results indicate that NOCIt was the most accurate method of the three, requiring 0.07 ng template DNA from any one contributor to consistently estimate the true number of contributors. Additionally, NOCIt returned repeatable results for 91% of samples analyzed in quintuplicate, while 50 single‐source standards proved sufficient to calibrate the software. The data indicate that computational methods that employ a quantitative, probabilistic approach provide improved accuracy and additional pertinent information such as the uncertainty associated with the inferred number of contributors.     

Migration of health professionals from India: tracking the flow

India has a vast reservoir of highly skilled, semi-skilled, and unskilled labor force and is one of the major source countries in the global labor market. The current paper is the first of its kind to focus primarily on migration of health professionals from India. In the absence of national-level data on migration, the paper uses data from different sources to outline the magnitude and direction of flow of health care providers from India. The paper also assesses the existing global and national policies on migration and discusses their relevance in the context of migration of health professionals from India.     

On the discriminability of the handwriting of twins

As handwriting is influenced by physiology, training, and other behavioral factors, a study of the handwriting of twins can shed light on the individuality of handwriting. This paper describes the methodology and results of such a study where handwriting samples of twins were compared by an automatic handwriting verification system. The results complement that of a previous study where a diverse population was used. The present study involves samples of 206 pairs of twins, where each sample consisted of a page of handwriting. The verification task was to determine whether two half-page documents (where the original samples were divided into upper and lower halves) were written by the same individual. For twins there were 1236 verification cases -- including 824 tests where the textual content of writing was different, and 412 tests where it was the same. An additional set of 1648 test cases were obtained from handwriting samples of nontwins (general population). To make the handwriting comparison, the system computed macro features (overall pictorial attributes), micro features (characteristics of individual letters), and style features (characteristics of whole-word shapes and letter pairs). Four testing scenarios were evaluated: twins and nontwins writing the same text and writing different texts. Results of the verification tests show that the handwriting of twins is less discriminable than that of nontwins: an overall error rate of 12.91% for twins and 3.7% for nontwins. Error rates with identical twins were higher than with fraternal twins. Error rates in all cases can be arbitrarily reduced by rejecting (not making a decision on) borderline cases. A level of confidence in the results obtained is given by the fact that system error rates are comparable to that of humans (lower than that of lay persons and higher than that of questioned document examiners [QDEs]).     

A New Typology of Electoral Violence: Insights from Indonesia

ABSTRACT

Existing literature on election violence has focused on how violence suppresses voter participation or shapes their preferences. Yet, there are other targets of election violence beyond voters who have so far received little attention: candidates and government agencies. By intimidating rival candidates into dropping out of the race, political hopefuls can literally reduce the number of competitors and increase their likelihood of winning. Likewise, aspiring candidates can target government agencies perceived to be responsible for holding elections to push for electorally beneficial decisions. In this paper, we introduce a new typology of electoral violence and utilize new data of election violence that occur around executive elections in Indonesia from 2005 through 2012. The types of violence we identified differ in these ways: a) Of all cases of electoral violence observed in this article, most incidents were targeted towards candidates and government bodies; b) candidates are generally targeted before elections, whereas voter-targeting incidents are spread out evenly before and after elections and government-targeted violence tends to occur afterwards; c) pre-election violence is concentrated in formerly separatist areas, but post-election violence is more common in districts with prior ethnocommunal violence. These distinctions stress the importance of examining when and why different strategies are adopted.     

Death Due to Coronary Artery Insufficiency Following Blunt Trauma to the Chest

There have been numerous reports of sudden cardiac death following blunt trauma to the chest, but there is lack of such references in forensic literature. It is the court of law which makes decision about trauma precipitating natural events. The forensic pathologist is scientifically trained in the medical field and would be in a better position to give clear picture about the victim's general status at the time of death, exact nature and severity of the illness he is suffering from if any. He can also assess the nature and severity of injuries sustained, and thus, his opinion as to the possible role played by the traumatic event in bringing about the death is valuable. This paper will discuss the mechanism of cardiac injury or possible cardiac injury and sudden death of an apparently healthy 36‐year‐old male following blunt chest trauma sustained during alleged assault by his neighbor.     

Dithranol: an unusual agent to produce artificial (false) bruise: a case report

Injuries are simulated by people for various reasons and may be labeled as "false/fictitious/forged." These may be self-inflicted or self-suffered. One such "injury" is an artificial/false bruise that may be produced by applying the juices of various irritant vegetable poisons. However, the present case is of an inmate of jail who used dithranol for producing 20 such artificial bruises on the back of his body. The purpose of such an act was to bring a charge of torture/beating against the jail officials.A good, thorough history taking and detailed and meticulous examination of the affected area, supplemented by relevant investigations and photography by a trained forensic expert, are a must to differentiate the "true" from the "false."     

Racial inequality in employment in Canada: Empirical analysis and emerging trends

Abstract: This article examines racial discrimination in employment in Canada using data from a sample of legal cases that were published in the Canadian Human Rights Reporter between 1980 and 1999. The authors discuss some theoretical perspectives on racial discrimination, briefly review empirical studies on the topic, examine the nature of and trends in such employment discrimination cases over the two decades, and provide an in‐depth discussion and analysis of selected legal cases on racial discrimination in Canada. After some concluding remarks, policy recommendations to combat racial discrimination in the workplace are suggested. Sommaire: Le présent article examine la discrimination raciale en matière d'emploi au Canada à l'aide de données d'un échantillon de causes judiciaires qui ont été publiées dans le Canadian Human Rights Reporter de 1980 à 1999. Les auteurs discutent de certaines perspectives théoriques sur la discrimination raciale, passent brièvement en revue les études empiriques sur le sujet, examinent la nature et les tendances de tels cas de discrimination en matière d'emploi au cours des deux décennies, et fournissent une discussion et analyse approfondie de causes judiciaires sélectionnées portant sur la discrimination raciale au Canada. En conclusion, ils proposent des recommandations de politiques pour combattre la discrimination raciale dans le lieu de travail     

Does hypernatremia cause subdural hematoma in children?: two case reports and a meta-analysis of the literature

Hypernatremia has been causally linked with subdural hematoma (SDH), but more recently this has been called into question. Conversely, there is a well-established link between SDH and injury. We wish to examine the evidence base that hypernatremia in infants and young children causes SDH.We present 2 cases of children with severe hypernatremia whose intracranial contents were assessed by imaging in the first case and postmortem examination in the second. Neither demonstrated SDH. The first case was important as the hypernatremia was iatrogenic occurring in a controlled hospital environment.We also searched the literature from 1950 to 2007, collecting data on all reported cases of hypernatremia in children younger than 7 years whose intracranial contents were examined by imaging, surgery, and/or postmortem examination. Of 124 cases reported in 31 articles, 112 cases developed hypernatremia in the community, and 12 in the hospital. Subdural hematoma was demonstrated in 7 cases, all of which had developed hypernatremia in the community under circumstances that would make it difficult to exclude nonaccidental injury. None of the 12 cases that developed hypernatremia in a controlled hospital environment had SDH.The evidence base supporting the hypothesis that hypernatremia causes SDH is poor, depending on isolated reports with uncertain histories.