“Sex change” in skeletal remains: Assessing how heat-induced changes interfere with sex estimation

The true impact of heat-induced changes in human bone regarding their sex estimation has not been comprehensively documented having a potentially negative impact on forensic anthropology. The objective of this paper was to evaluate how heat exposure affects sex estimation based on both morphological and metric features. The study focused in both low-to-medium intensity burns and high intensity burns. Selected sexually dimorphic features were analysed in 51 experimentally burnt skeletons from the 21st Century Identified Skeletal Collection. Bones were burnt to maximum temperatures between 450 °C and 1050 °C achieved after 75 to 257 min. Morphological methods tested in this study comprised the recommendations for hipbone features from Buikstra and Ubelaker (1994) and from Bruzek (2002). On the other hand, metric references tested here were the ones from Wasterlain (2000), Curate et al. (2016) and Gonçalves et al. (2013) focused on the humerus, femur, calcaneus and talus. Agreement was tested with Gwet’s AC1 test and was further assessed by calculating the relative amount of perfect agreements. Results demonstrated that heat-induced changes affected not only the scoring of morphological features burnt at high temperatures but also the scoring of features burnt at lower intensities. On the other hand, metric features were only considerably affected in high intensity burns, no major changes being documented for low-to-medium intensity burns. For low-to-medium intensity burns, the Bruzek and Curate et al. methods revealed a better agreement between the pre- and post-burning scores. For high intensity burns, better agreement was obtained by using the Bruzek (2002) and Gonçalves et al. (2013) methods. As expected, heat-induced warping, fracture and metric change had a major impact on the pre- and post-observations’ agreement. Contrary to what has been systematically assumed over the years, this impact is also quite substantial in bones burnt at low-to-medium burn intensities so caution is advised during the analysis of this kind of burnt skeletal material.     

International relations scholarship,academic institutions and the Israeli–Palestinian conflict

This paper explores the role of academic scholarship and practice in constituting, aggravating, and resolving the Israeli–Palestinian conflict. The first section of the paper examines how scholarly discourse and methods of analysis contribute to shaping (mis)understandings of on-the-ground conflict dynamics. To demonstrate this point, the paper first overviews conventional social science methods used in mainstream international relations (IR) scholarship that tend to reify, freeze and homogenize ‘the conflict’ as well as conflict parties and then uses a different scholarly approach—namely a processual, peace-studies-oriented methodology—that provides a very different ‘picture’ of the conflict, its parties and appropriate strategies of engagement in the pursuit of peace. The second section of the paper uses three brief case studies to demonstrate how Israeli and Palestinian academics help constitute ‘the conflict’ and its parties not only through their scholarship but also through their ‘practice’. These examples also show the importance of re-evaluating analytical models to include contextual dynamics such as time, place and sources of available power as well as to recognize the diversity of Palestinian and Israeli views regarding the sources of—and best approaches for addressing—‘the conflict’.     

Evaluation of Lip Prints on Different Supports Using a Batch Image Processing Algorithm and Image Superimposition

This study aimed to develop and to assess an algorithm to facilitate lip print visualization, and to digitally analyze lip prints on different supports, by superimposition. It also aimed to classify lip prints according to sex. A batch image processing algorithm was developed, which facilitated the identification and extraction of information about lip grooves. However, it performed better for lip print images with a uniform background. Paper and glass slab allowed more correct identifications than glass and the both sides of compact disks. There was no significant difference between the type of support and the amount of matching structures located in the middle area of the lower lip. There was no evidence of association between types of lip grooves and sex. Lip groove patterns of type III and type I were the most common for both sexes. The development of systems for lip print analysis is necessary, mainly concerning digital methods.     

Molecular genetics of sudden cardiac death

Sudden cardiac death (SCD) is one of the most common causes of death. An important number of sudden deaths, especially in the young, are due to genetic heart disorders, both with structural and arrhythmogenic abnormalities. In recent years, significant advances have been made in understanding the genetic basis of SCD. Identification of the genetic causes of sudden death is important because close relatives are also at potential risk of having a fatal cardiac condition. A comprehensive post-mortem investigation is vital to determine the cause and manner of death and provides the opportunity to assess the potential risk to the family after appropriate genetic counselling. In this paper, we present an update of the different genetic causes of sudden death, emphasizing their importance for the forensic pathologist due to his relevant role in the diagnosis and prevention of SCD.     

Correction to: The emotional dimensions of reason‑giving in deliberative forums

Policy Sciences - In the original publication of the article, the second author’s name was misspelt. The correct name is given in this Correction.     

Sarcomeric gene mutations in sudden infant death syndrome (SIDS)

In developed countries, sudden infant death syndrome (SIDS) represents the most prevalent cause of death in children between 1 month and 1 year of age. SIDS is a diagnosis of exclusion, a negative autopsy which requires the absence of structural organ disease. Although investigators have confirmed that a significant percentage of SIDS cases are actually channelopathies, no data have been made available as to whether other sudden cardiac death-associated diseases, such as hypertrophic cardiomyopathy (HCM), could be responsible for some cases of SIDS. The presence of a genetic mutation in the sarcomeric protein usually affects the force of contraction of the myocyte, whose weakness is compensated with progressive hypertrophy and disarray. However, it is unclear whether in the most incipient forms, that is, first years of life, the lack of these phenotypes still confers a risk of arrhythmogenesis. The main goal of the present study is to wonder whether genetic defects in the sarcomeric proteins, previously associated with HCM, could be responsible for SIDS. We have analysed 286 SIDS cases for the most common genes implicated in HCM in adults. A total of 680 mutations localised in 16 genes were analysed by semi-automated matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry (MALDITOF-MS) using the Sequenom MassARRAY(?) System. Ten subjects with completely normal hearts showed mutated alleles at nine of the genetic variants analysed, and one additional novel mutation was detected by conventional sequencing. Therefore, a genetic mutation associated with HCM may cause sudden cardiac death in the absence of an identifiable phenotype.     

Nucleotide variability of HV-I in admixed population of the Brazilian Amazon Region

The analysis of genetic variation in the nucleotide sequences of mitochondrial DNA has been used as a tool in the study of history of different human populations, as Amerindians, Afro-descendents populations and furthermore admixed populations. In this study, the mitochondrial DNA was analyzed in 158 unrelated individuals in an admixed population of the Amazonian Region: Santarém-PA-Brazil. The polymorphisms were detected using both levels, analysis of restriction enzyme and direct sequencing. We observed a total of 49 different haplotypes were found determined by 46 variable nucleotides. The more frequent haplotypes (Hap03) was shared by five samples and 43 sequences were unique. The genetic diversity was estimated to 0.989+/-0.0067 and the probability of two random individuals showed identical mitochondrial DNA (mtDNA) haplotypes were 2.8%.     

The emotional dimensions of reason-giving in deliberative forums

Policy Sciences - This study investigates the role of emotions in the context of a controversial debate surrounding criminal legislation in Brazil. While several thinkers have criticized...     

Populism,ontological insecurity and Hindutva: Modi and the masculinization of Indian politics

Abstract

In an era increasingly defined by insecurity and populist politics, India has emerged as a forceful ontological security provider under the leadership of Marendra Modi. If ontological security is about finding a safe (imagined) haven, then ontological insecurity is about the lack of such a space in narrative terms. Drawing on Lacanian understandings of ‘the imaginary’ as something that can fill and naturalize this lack of space, the article is concerned with how memories, places and symbols of narrative identity constructions are used in populist discourse. More specifically, it attempts to understand the relationship between ontological insecurity and the imaginaries of populist politics in India. In so doing, it argues that the re-invention of ‘nationhood’, ‘religion’ and ‘Hindu masculinity’ along gendered lines has created a foundation for governing practices aimed at ‘healing’ a number of ontological insecurities manifest in Indian society. It specifically looks at how the Modi doctrine has formulated and expanded its foreign policy discourse into one that privileges populist narratives of nativism, nationalism and religion as forms of ontological security provision at home and abroad, but also how everyday practices can challenge such narratives, thus allowing different imaginaries of the Indian state.     

Costly distribution and the non-equivalence of tariffs and quotas

When governments impose a quota or tariff on imports, it is well known that the resulting rents and revenues trigger costly rent-seeking and revenue-seeking activities, which are welfare-reducing and may be economically more significant than the efficiency losses resulting from the protectionist-induced resource misallocation. Repeated interaction among firms can eliminate wasteful rent- and revenue-seeking expenditures through cooperation. We show that while aggregate outcomes are equivalent under tariffs and quotas if cooperation arises, the conditions under which cooperation arises differ by policy. This difference arises because a firm must incur additional cost to physically import and distribute the goods associated with additional quota licenses, whereas there is no such cost when it comes to consuming additional tariff revenue. Thus, quotas and tariffs are non-equivalent. We provide a simple sufficient condition under which cooperative elimination of rent-seeking under quotas is easier than cooperative elimination of revenue-seeking under tariffs and therefore a quota is the preferred policy whenever the policy admits cooperation.