Identification Using Frontal Sinus by Three‐Dimensional Reconstruction from Computed Tomography*

Abstract: Radiographs and computed tomography (CT) images have been increasingly applied and accepted in forensic sciences. Along with radiographs and CT images, the frontal sinus is often used for the individual identification because of its unique and unchangeable characteristics. The purpose of this study is to define the usefulness of three‐dimensional (3‐D) images of the frontal sinus for identification. CT images from 119 Korean cadavers were built up for 3‐D reconstruction and surveyed with 15 measurements. The total volume of the sinus, some nonmetric characteristics, and the bilateral asymmetry index in men differed significantly from those in women (p < 0.05). The digit codes, six sections and 10‐digit number, were almost able to accurately identify individuals (98%). This study showed a statistical difference between the sexes and classified the fused and prominent middle sinuses for the first time. This proposed method for identification is more accurate than those used in other studies.     

The interpersonal voice: applying appraisal to the rap and sung voice

Following in the traditions of Systemic Functional Linguistics (SFL) and social semiotics, this paper applies the linguistic system of appraisal to the mode of sound. More specifically, it aims to describe and compare the interpersonal properties of the rap and sung performance voices. In doing so, this paper also aims to provide analysts with a systematic, principled method by which to identifying interpersonal meanings in sound. Drawing on various aspects of the appraisal framework, and the respective sound features of the rap and sung voice, this paper offers three approaches. The first approach employs the grammatical frames used to classify the attitude sub-systems of affect, judgment, and appreciation. The second approach is more general in scope and analogizes from the sound systems of melody, time, and voice quality to the appraisal systems of attitude, engagement, and graduation, respectively. The third approach applies the concept of binding to the distinctive sounds of the rap and sung voice. The paper concludes by considering some future directions for this research.     

中国社团管理:制度安排、职能协调与影响力

不同的制度安排会产生不同的制度安排结果。中国社会团体发展的实践表明,双重管理体制和分级管辖体制的制度安排决定着中国社团发展的规模与影响。通过政策性协调与事务性协调,更强化了对中国社团的控制与规范。中国社团管理存在的诸多问题,一方面要求完善双重管理体制和分级管辖体制,另一方面需要大力培育和引导社团自主地发展,从而形成政府、市场与社会三者有机组合的和谐局面,促进中国社会现代化进程。     

Missed Opportunities for Diagnosis of Post‐traumatic Thrombosis: A Case Series and Literature Review

Thrombosis is caused by abnormalities in the composition of the blood, the quality of the vessel wall, and the nature of the blood flow. Herein, we present four cases of fatal thrombus formation after a trauma, which were missed at clinical diagnosis as the symptoms were misinterpreted. We stress that a blunt trauma can be fatal because of its direct and indirect kinetic energy effects at the subacute phase. This report highlights the importance of considering thrombosis in the diagnosis of closed trauma, which is usually missed because of lack of awareness for early diagnosis and treatment or is detected too late for any therapeutic intervention, which can result in avoidable morbidity and mortality.     

Histologic findings of the sinus node and the perinodal area in street heroin addicts, victims of sudden unexpected death

Sudden unexpected death is frequent in street heroin addicts. We conducted a histologic study of the sinus node (SN) to offer some evidence about the possible arrhythmogenic cause of death. Postmortem coronary angiography and microscopic examination of the SN and the perinodal area were performed in 50 heroin addicts (group 1) and in 50 nonaddicts (group 2), all men (16-40 years old). In heroin addicts, fatty and/or fibrous tissue replaced SN tissue in 21 cases (42%). Perinodal infiltration was found in 15 cases (30%). Fibromuscular dysplasia in branches of the sinus node artery (SNA) was found in eight cases (16%). Inflammation with focal and/or diffuse concentration of round cells was detected in the SN in 22 cases (44%). Old mural thrombi were also found in 13 cases (26%). The histologic changes in the SN and perinodal area offer an explanation about the possible mechanism of arrhythmia and sudden death in this population.     

Occlusion of left and right coronary arteries and coronary sinus following blunt chest trauma

Blunt chest trauma from rapid automobile airbag deployment causing coronary artery occlusion and myocardial infarction is a rare but potentially fatal condition. We present the case of a 37-year-old man who developed extensive anterior and inferior myocardial infarction because of occlusion of both left anterior and right coronary arteries following blunt injury to the chest in a car accident. The patient was scheduled for emergency coronary angiography but left and right coronary ostia were not cannulated because of thrombus formation probably. The patient died, and the autopsy revealed external compression by epicardial hematomas involving separately left and right coronary arteries and the coronary sinus without signs of coronary and/or aortic dissection. To our knowledge, this is the first case presenting occlusion of both coronary arteries secondary to blunt chest trauma causing acute myocardial infarction in a young man without signs of prior coronary artery disease.     

Sudden Infant and Early Childhood Death and Sinus of Valsalva Pseudoaneurysms

Two cases of occult pseudoaneurysms of the sinus of Valsalva (SoV) are reported to demonstrate different etiologies and lethal mechanisms. A previously well 9‐month‐old boy who suffered an unexpected fatal cardiorespiratory arrest was found at autopsy to have a ruptured pseudoaneurysm of the left SoV resulting in lethal hemopericardium. A 13.5‐month‐old boy died soon after presenting with a 24‐h history of poor feeding and reduced urine output. At autopsy, destruction of the noncoronary cusp of the aortic valve by bacterial endocarditis was found with extension of the inflammation into a pseudoaneurysm of the SoV with surrounding abscess formation involving the atrioventricular node. Death was most likely due to an arrhythmia. Pseudoaneurysms of the SoV are exceedingly rare but may result in sudden/unexpected death in infancy and early childhood from rupture or involvement of the conduction system or myocardium. Detailed cardiac examination is essential in all unexpected deaths in early life.     

涉外警务英语口语语篇的人际功能对比分析——以办案类语篇和求助类语篇为例

从Halliday系统功能语法的人际功能角度出发,以《涉外警务英语口语语篇的功能语言学研究》中的两篇涉外警务英语口语语篇为研究语料,试从语气系统、情态系统和语言特色三方面对两类涉外警务英语口语语篇不同的人际功能特征进行对比分析,并归纳出两类语篇不同的人际特点。认识到不同类型涉外警务英语口语语篇的特点不仅有利于改进当前警察院校警务英语专业的科研和教学,更有利于提高我国公安干警涉外警务管理的水平。     

The Frontal Sinus Cavity Exhibits Sexual Dimorphism in 3D Cone‐beam CT Images and can be Used for Sex Determination

Few studies have assessed the use of the frontal sinus cavities for sex differentiation. In this study, a new methodology was used to assess the reliability of CBCT images of the frontal sinus cavity for determining sex based on the sexual dimorphism found in this anatomical structure. The survey sample consisted of 130 scans that were reconstructed three‐dimensionally. 3D images of the cavity volume in the frontal, lateral, and basal views were exported in TIFF. The following variables were measured in a second program: area, perimeter, bounding rectangle, ellipse fit, circularity, aspect ratio, roundness, solidity, and Feret's diameter. The methodology demonstrated the existence of sexual dimorphism with an accuracy of 80.0% in the logistic regression model. The basal view had the greatest explanatory power in the final model. This methodology may be used as an alternative way of determining a reliable biological profile during the analysis of skeletal remains.     

Putting the Special Case in Its Place: Switzerland and Small‐N Comparison in Policy Research

This research note presents a set of strategies to conduct small‐N comparisons in policy research including the Swiss case. Even though every country can be considered “special” to some extent, the Swiss political system is often viewed as a particularly difficult case for comparison because of the impact of its idiosyncratic institutional features (most notably direct democracy). In order to deal with this problem, our note sets out two possible strategies ‐ the use of functional equivalents and of counterfactual reasoning ‐ and explains how to implement them empirically through process tracing and the establishment of causal chains. As an illustration, these strategies are used for a comparison of the process of electricity market liberalisation in Switzerland and Belgium.