Suicidal hanging resulting in complete decapitation--forensic, radiological, and anthropological studies: a case report

The authors report a case of complete posthanging decapitation. The decapitated corpse lay against a pillar of a road bridge. The head had rolled 5 m from the trunk. The bridge was 7.2 m above the road level. The rope was 3.6 m long, its lower end was 3.6 m from the ground and its diameter was 10 mm. The noose used was a slip knot. Plain X-rays of the skull and cervical spine were obtained. The skull X-rays showed air in the meningeal spaces, in both lateral and third ventricles. The severance plane of the cervical spine was between the third and the fourth cervical vertebrae. No other cervical vertebral injuries were noted. At autopsy, the brain was macroscopically unremarkable except for air in the meningeal veins. The decapitation injuries of the head and the torso corresponded perfectly, without apparent loss of substance. The severance plane was confirmed. Dry bone study was carried out. Except for fractures of the extremities of the spinous processes of the second and third cervical vertebrae, no other bone injury of the spine was seen. The cervical vertebrae displayed numerous osteoarthritic lesions. The traditional hangman's fracture was not found. To the best of our knowledge, this is the first report of complete posthanging decapitation with a severance plane between the third and fourth cervical vertebrae.     

Resolving paternity relationships using X-chromosome STRs and Bayesian networks

X-chromosomal short tandem repeats (X-STRs) are very useful in complex paternity cases because they are inherited by male and female offspring in different ways. They complement autosomal STRs (as-STRs) allowing higher paternity probabilities to be attained. These probabilities are expressed in a likelihood ratio (LR). The formulae needed to calculate LR depend on the genotype combinations of suspected pedigrees. LR can also be obtained by the use of Bayesian networks (BNs). These are graphical representations of real situations that can be used to easily calculate complex probabilities. In the present work, two BNs are presented, which are designed to derive LRs for half-sisters/half-sisters and mother/daughter/paternal grandmother relationships. These networks were validated against known formulae and show themselves to be useful in other suspect pedigree situations than those for which they were developed. The BNs were applied in two paternity cases. The application of the mother/daughter/paternal grandmother BN highlighted the complementary value of X-STRs to as-STRs. The same case evaluated without the mother underlined that missing information tends to be conservative if the alleged father is the biological father and otherwise nonconservative. The half-sisters case shows a limitation of statistical interpretations in regard to high allelic frequencies.     

Rough Sets and Three Valued Connectives Extended Abstract

1 Introduction
In [5] we investigated the significance of some truth-functional three valued logics of ill-known sets described by pairs of disjoint （or pairs of nested） subsets. In particular, we referred to the case of rough sets showing that if from a mathematical standpoint we obtain sound results, the interpretation with respect to reasoning about data tables is questionable. The operators taken into account in that work were the usual intersection and union （min/max） on three values and three different implications： Lukasiewicz, Gedel and Kleene     

Foreign Direct Investment Spillovers and Productivity Growth in Indonesian Garment and Electronics Manufacturing

Inflows of foreign direct investment generate externalities that spill over to domestic firms and raise their productivity. This article examines the extent of spillover effects of foreign direct investment for firms in the highly disaggregated garment (ISIC 3221) and electronics industries (ISIC 3832) in Indonesia. Both are export-intensive industries, but differ greatly in technological sophistication and labour intensity. Changes in both the productivity level and rate of growth in each industry are decomposed into the effects of technological change, technical efficiency change and scale efficiency change and then the impacts of spillovers on each component and on total productivity are estimated. The findings suggest that foreign direct investment generates a positive effect on total productivity change, technical efficiency change, technological change, and scale efficiency change in the garment industry. In contrast, foreign direct investment contributes significantly negatively to total productivity, technological change and scale efficiency change, but has no significant effect on technical efficiency change in the electronics industry.     

Obtaining Party Positions on Immigration in Switzerland: Comparing Different Methods

The position of political parties on policy issues is crucial for many questions of political science, including studies of political representation. This research note examines different methods for obtaining party positions on immigration in retrospective. Party positions are obtained using pooled expert surveys, manual coding of party manifestos with a conventional codebook, manual coding of manifestos using check‐lists, and automatic coding of manifestos using Wordscores and a dictionary of keywords respectively. In addition, positions from a media analysis and a retrospective evaluation of researchers in the field of immigration are used. The results suggest that most methods differentiate the same order of party positions. While there are high correlations between many methods, the different methods tend not to agree on the exact positions. The automatic dictionary approach does not seem to measure party positions reliably.     

The Role of Language in the Automatic Coding of Political Texts

Automatic approaches to coding party manifestos and other political texts have become more widespread. This research note addresses the question to what extent the source language of a text affects the results. To do so, Swiss manifestos in German and French are coded automatically, comparing a keyword‐based dictionary approach and Wordscores. Because of language differences, both stemming and particularly stop words are important to obtain comparable results for Wordscores. If both are used, the predicted scores are almost identical in both languages. With the right preparations, the challenge of language differences can thus be overcome.     

Ethnic Group Representation in a Cross-National Comparison

This paper compares the levels of ethnic group representation in parliament in 95 democracies. The analyses are comparative in nature, breaking with the literature where single country studies are the norm. Considering both electoral and cultural variables, the results cast doubt on whether the role of the electoral system in shaping political representation is dominant. In contrast to what much of the literature suggests, once controlling for the ethnic make-up of society and cultural attitudes, electoral aspects seem of little significance. Levels of ethnic group representation are best explained with cultural variables, in particular liberal attitudes towards marginalised groups in society.     

Introducing a semi-automatic method to simulate large numbers of forensic fingermarks for research on fingerprint identification

Statistical research on fingerprint identification and the testing of automated fingerprint identification system (AFIS) performances require large numbers of forensic fingermarks. These fingermarks are rarely available. This study presents a semi-automatic method to create simulated fingermarks in large quantities that model minutiae features or images of forensic fingermarks. This method takes into account several aspects contributing to the variability of forensic fingermarks such as the number of minutiae, the finger region, and the elastic deformation of the skin. To investigate the applicability of the simulated fingermarks, fingermarks have been simulated with 5-12 minutiae originating from different finger regions for six fingers. An AFIS matching algorithm was used to obtain similarity scores for comparisons between the minutiae configurations of fingerprints and the minutiae configurations of simulated and forensic fingermarks. The results showed similar scores for both types of fingermarks suggesting that the simulated fingermarks are good substitutes for forensic fingermarks.     

Age calculation using X-ray microfocus computed tomographical scanning of teeth: a pilot study

To correlate dental age with an individual's chronological age based on the calculated volume ratio of pulp versus tooth volume measured, an X-ray microfocus computed tomography unit (microCT) with 25 microm spatial resolution was used to non-destructively scan 43 extracted single root teeth of 25 individuals with well-known chronological age. Custom-made analysis software was used by two examiners to obtain numerical values for pulpal and tooth volume. The ratio of both was calculated and statistically processed. No significant intra- or inter-examiner differences were found. In fact, a very strong concordance correlation coefficient was found. Linear regression analysis showed a coefficient of determination (r) of 0.31 which suggests that there is a rather weak correlation between the volume ratio of pulp versus tooth and biological age. Although rather time consuming, this technique shows promising results for dental age estimation in a non-destructive manner using X-ray microfocus computed tomography.     

Methodological Challenges for National and Multi-sited Comparative Survey Research

This paper will examine the ways in which ‘textbook’survey research methods need to be adapted and refined for researchwith forced migrants, and the ways in which cross-national contexts,as well as research within one national context with forcedmigrants from different communities, affect the utilizationof survey methods. Linked to this, the ways in which surveydesign issues need to be sensitive to the diversity betweenand within countries and communities will be explored. The paperwill draw on two surveys, one a UK national survey and the othera multi-sited comparative survey in the UK and South Africa,to explore access to forced migrants in different contexts andthe appropriateness of different modes of data collection betweenand within countries and communities (e.g. paper self-completion,face-to-face interviews and web-based surveys). The impact ofpolitics, language and literacy, gender, and immigration status,especially irregular and insecure statuses, will be examined.