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81.
Ferreira da Silva LA Pimentel BJ Almeida de Azevedo D Pereira da Silva EN Silva dos Santos S 《Forensic science international》2002,130(2-3):187-188
The polymorphism of nine STR loci has been studied in a sample of 598 individuals from the population of Alagoas, Northeastern Brazil. Determination of the allele frequencies as well as of several commonly used statistics in forensic and paternity testing were defined. The most polymorphic loci were TH01 and D7S317. The exact test demonstrated that the nine loci analyzed in the population have no deviation from Hardy-Weinberg equilibrium (P > 0.05). 相似文献
82.
Allele and haplotype frequencies of seven Y-chromosome STR loci, DYS 19, DYS388, DYS389I, DYS389II, DYS390, DYS391 and DYS392, were determined from 109 unrelated males in Rio de Janeiro, Brazil, sample population. 相似文献
83.
Silva JA Derecho DV Leong GB Weinstock R Ferrari MM 《Journal of forensic sciences》2001,46(2):309-316
Posttraumatic stress disorder has long been linked to violent behavior. However, the exact nature of that association remains poorly characterized due to the limitations of knowledge in the area of phenomenology, contextual factors, the biology, and the nature of the aggression involved in the disorder. A clear understanding of the genesis of violence in posttraumatic stress disorder can be helpful to those involved in assessing psychiatric-legal issues relevant to the disorder and in its therapeutic management. In this article, we review the potential psychological links between posttraumatic stress disorder secondary to combat exposure and violent behavior and suggest a tentative classification of the main psychological causes of violence in that syndrome. 相似文献
84.
Previous research has established a relationship between income and food security. In this article, we examine the effect of food security on food purchases, specifically on five food‐at‐home groups. Using a set of Tobit models, and after controlling for a set of confounding factors, we show that food security perception leads to the purchase of fruit and vegetables, meats and eggs, and dairy products while decreasing the purchase of fat and carbohydrates. However, we cannot be certain of the actual nutritional effect. 相似文献
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87.
Maria da Gloria Bonelli 《Law & social inquiry》2003,28(4):1045-1073
This study focuses on the trajectories of the Institute of Brazilian Lawyers (Instituto dos Advogados Brasileiros, or IAB), created in 1843, and the Order of Lawyers of Brazil (Ordem dos Advogados do Brasil, or OAB), formed in 1933, extending the analysis up to 1997. The article has three objectives: (a) to point out the role played by expertise in the cohesion of the IAB-OAB, changing its public image from one of the political counterelite to that of representatives of civil society, with the "institutional vocation" to defend juridical order and, later, human and citizenship rights; (b) to describe the social ties that permeate the legal world, preventing internal disputes from becoming deep and lasting cleavages; and (c) to contrast the experience of the Brazilian bar with those of the German and French. 相似文献
88.
公安工作的现代化,必须走科技强誓之路.建立信息中心要以公安信息网建设为基础,以公安业务信息共享为目标,向科技要誓力.加强信息中心建设,发挥科技强警作用. 相似文献
89.
Multivariate Classification of Original and Fake Perfumes by Ion Analysis and Ethanol Content
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Clêrton L. Gomes Ph.D. Ari Clecius A. de Lima M.S. Adonay R. Loiola Ph.D. Abel B. R. da Silva M.S. Manuela C. L. Cândido M.S. Ronaldo F. Nascimento Ph.D. 《Journal of forensic sciences》2016,61(4):1074-1079
The increased marketing of fake perfumes has encouraged us to investigate how to identify such products by their chemical characteristics and multivariate analysis. The aim of this study was to present an alternative approach to distinguish original from fake perfumes by means of the investigation of sodium, potassium, chloride ions, and ethanol contents by chemometric tools. For this, 50 perfumes were used (25 original and 25 counterfeit) for the analysis of ions (ion chromatography) and ethanol (gas chromatography). The results demonstrated that the fake perfume had low levels of ethanol and high levels of chloride compared to the original product. The data were treated by chemometric tools such as principal component analysis and linear discriminant analysis. This study proved that the analysis of ethanol is an effective method of distinguishing original from the fake products, and it may potentially be used to assist legal authorities in such cases. 相似文献
90.
Ana Claudia Martins Ciconelle BSc MSc Renan Lucio Berbel da Silva DDS MSc Jun Ho Kim DDS MSc PhD Bruno Aragão Rocha MD Dênis Gonçalves dos Santos BSc Luis Gustavo Rocha Vianna BSc MSc Luma Gallacio Gomes Ferreira BSc Vinícius Henrique Pereira dos Santos Jeferson Orofino Costa DDS Renato Vicente BSc MSc PhD 《Journal of forensic sciences》2023,68(6):2057-2064
The objective of this study is to assess the performance of an innovative AI-powered tool for sex determination using panoramic radiographs (PR) and to explore factors affecting the performance of the convolutional neural network (CNN). The study involved 207,946 panoramic dental X-rays and their corresponding reports from 15 clinical centers in São Paulo, Brazil. The PRs were acquired with four different devices, and 58% of the patients were female. Data preprocessing included anonymizing the exams, extracting pertinent information from the reports, such as sex, age, type of dentition, and number of missing teeth, and organizing the data into a PostgreSQL database. Two neural network architectures, a standard CNN and a ResNet, were utilized for sex classification, with both undergoing hyperparameter tuning and cross-validation to ensure optimal performance. The CNN model achieved 95.02% accuracy in sex estimation, with image resolution being a significant influencing factor. The ResNet model attained over 86% accuracy in subjects older than 6 years and over 96% in those over 16 years. The algorithm performed better on female images, and the area under the curve (AUC) exceeded 96% for most age groups, except the youngest. Accuracy values were also assessed for different dentition types (deciduous, mixed, and permanent) and missing teeth. This study demonstrates the effectiveness of an AI-driven tool for sex determination using PR and emphasizes the role of image resolution, age, and sex in determining the algorithm's performance. 相似文献