1,720,994 research outputs found
Complex fracture patterns in hanging associated with a fall from height
No full textIn some rare cases of hanging, the so-called ‘hangman’s fracture’ is observed. This occurs when a fall from height is associated with hanging, e.g. capital executions. We describe the case of an 81-year-old man who committed suicide by jumping off a bridge, with a rope wrapped around his neck. The combination of hanging and falling caused a series of bone fractures to the cervical spine and the hyoid bone, leading to dislocation of the vertebral column and multiple bone fragments, producing peculiar patterns. Computed tomography also identified a transverse full-thickness fracture of the dens, which is a rare event. This case highlights specific injuries associated with the combination of hanging and falling, and underlines the importance of a multidisciplinary approach in terms of radiological examination and complete autopsy
Differential diagnosis on discolorations of the skin in a case of suspected positional asphyxia
No full textA 65-year-old man was found lifeless in his apartment, laying in a peculiar head-down position. His head was on the floor and his neck was over-flexed, with his trunk flexed on his neck. Examination of the body showed intense violet lividity of the head, torso and limbs, according to the position of the body. Moreover, diffuse hemorrhagic spots on the shoulders, upper part of the back and upper arms, along with an intense arch-shaped purple area on the anterior neck were detected at external examination. Suspicions of neck injuries due to strangulation and death due to positional asphyxia arose, but a thorough examination of circumstantial data and autopsy findings enabled a correct identification of cause and manner of death, and excluded strangulation and positional asphyxia as the cause of death. This case raises several issues on differential diagnosis and underlines the importance of a correct combined analysis of the findings provided by on-scene investigation and autopsy
Estimation of Late Postmortem Interval: Where Do We Stand? A Literature Review
Full text linkEstimating time since death can be challenging for forensic experts, and is one of the most challenging activities concerning the forensic world. Various methods have been assessed to calculate the postmortem interval on dead bodies in different stages of decomposition and are currently widely used. Nowadays, the only well-recognized dating technique is carbon-14 radioisotope measurement, whereas other methods have been tested throughout the years involving different disciplines with different and sometimes not univocal results. Today, there is no precise and secure method to precisely determine time since death, and late postmortem interval estimation remains one of the most debated topics in forensic pathology. Many proposed methods have shown promising results, and it is desirable that with further studies some of them might become acknowledged techniques to resolve such a difficult and important challenge. The present review aims at presenting studies about the different techniques that have been tested in order to find a valuable method for estimating time since death for skeletal remains. By providing a comprehensive overview, the purpose of this work is to offer readers new perspectives on postmortem interval estimation and to improve current practice in the management of skeletal remains and decomposed bodies
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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