1,720,968 research outputs found

    Applicazione delle anulazioni di cemento per la determinazione dell'età di resti umani

    No full text
    Scopo di tale lavoro è verificare l'applicabilità, l'accuratezza e la precisione di tre differenti metodi per la valutazione dell'età biologica: il conteggio delle anulazioni del cemento radicolare, il metodo di Lamendin e quello di Gustafson-Johanson. Per il metodo delle anulazioni del cemento sono stati utilizzati 194 denti decalcificati e non, colorati istologicamente mediante Ematossilina-Eosina, von Kossa e Tricromica di Masson; tale metodo risulta essere quello con il maggior coefficiente di correlazione ed ha inoltre restituito una maggiore precisione, mentre a suo sfavore gioca un tempo di preparazione dei campioni piuttosto lungo. Il metodo è stato testato anche su materile di natura archeologica. Sia il metodo di Lamendin che il Gustafson-Johanson, tendono a sovrastimare l'età entro i 40 anni ed a sottostimarla al di sopra dei 40, ed entrambi i metodi si dimostrano più accurati in un range d'età compreso tra i 35 ed i 45 anni, quello di Gustafson-Johanson è leggermente più preciso, mentre il Lamendin è certamente più semplice da applicare per i non esperti

    L’odontostomatologo tra obbligazione di diligenza e vincolo di risultato : le aspettative del paziente odontoiatrico

    No full text
    La presentazione mira ad esporre alcune problematiche relative alla responsabilità professionale dell'odontostomatologo

    Linee guida dell'American board of forensic odontology per lo studio delle bitemark : applicabilità

    No full text
    Obiettivo. Lo scopo di questo lavoro è testare l'applicabilità delle linee guida per l'analisi delle morsicature proposte dall'American Board of Forensic Odontology (ABFO) su una serie di casi simulati su cadavere. Dalla tabella per l'analisi dei morsi suggerita dall'ABFO, sono state prese in considerazione solo le principali caratteristiche che più frequentemente si rinvengono sul tessuto cutaneo lesionato: numero e posizione dei denti, forma e dimensione degli archi, rotazioni dentarie, spazi interdentali, ampiezza labiolonguale e mesiodistale di ciascun dente. Metodi. Otto coppie di calchi dentari sono state montate in articolatore. Cinque tra queste, scelte casualmente, sono state utilizzate per produrre morsi su cadavere. Ciascuna morsicatura è stata confrontata, usando una metodica di sovrapposizione computer-assistita, con 5 o 6 coppie di calchi: tra questi era presente anche quello usato per produrre il morso. Ciascuna analisi è stata condotta prima con applicazione di un criterio qualitativo (esclusione/compatibità), successivamente, l'assegnazione di un punteggio (1 per compatibilità e 0 per esclusione, per ciascuna delle caratteristiche esaminate) ha permesso di ottenere una percentuale di corrispondenza tra la morsicatura e i calchi dentari. Risultati. I risultati ottenuti hanno mostrato che i punteggi inferiori al 48,5% corrispondevano sempre a un'esclusione; tra il 48,5% e il 75,8% (massima percentuale ottenuta) si rientrava nella compatibilità tra morsicatura e calchi analizzati. Conclusioni. Questo studio dimostra che il metodo a punteggio è facile da usare, veloce e utile, in particolare qualora si debba partire da un giudizio di esclusione

    APPLICATION OF THE ABFO GUIDELINES ON BITEMARKS IN SIMULATED CASES

    No full text
    This presentation aims at exposing the limits of morphological analysis of bitemarks, with special attention to ABFO guidelines

    Going Beyond Counting First Authors in Author Co-citation Analysis

    Get PDF
    The 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

    The Problem of Identification by Dental and Skeletal Morphology : a Quantitative Issue?

    No full text
    This presentation will demonstrate how both dental and osteological morphology may be quantified when dealing with identification of human remains. This implies that the odontologist or anthropologist may supply courts with a numerical possibility of identity. Identification by odontological and skeletal methods is frequently based on a qualitative assessment. Very rarely can one quantify morpho- logical aspects (e.g., the shape of teeth, bones, or dental work) and thus quantitate identification. Forensic odontologists frequently assert that quantification is not necessary, whereas radiologists and anthropologists who strive to identify human remains via bone morphology say that it is sufficient to find 8-10 distinctive morphological traits when comparing antemortem and postmortem data. However, it is not clear what distinctive morphological traits are, both in the dental and osteological scenario. The authors set forth to verify whether it is possible to apply a semi-quantitative method when comparing dental and bone morphology in order to supply courts with a “number” or probability when identifying human remains. The scope of this study was therefore to verify the possibility of identifying a subject according simply to dental and bone (1st thoracic vertebra) mor- phology. Dental study: A radiographic study was performed on 50 orthopan- tograms (OPTs), two for each subject performed at different times (within a ten year range). Every OPT of an individual was superimposed with all OPTs of the other individuals. Dental morphology was compared by exam- ining the profile of each tooth, also by superimposition. A scoring system was then adopted for each dental profile. Osteological study: In the osteological study 10 vertebrae (1st tho- racic) were used (from ten different individuals), and each radiographed in 15 different positions (which diverged of a maximum of 15 degrees from each other). All images were compared, similarly to the dental study, by examining the bone profile and by superimposition with all others. A score was also given in these cases. Finally, from the score, a correspondence index was calculated, both for the dental and osteological study. In all cases, correspondence indices allowed the authors to find thresholds that allowed them to exclude or identify individuals by comparing X-rays or bone morphology. This study, though certainly not conclusive, shows that dental, bone (1st thoracic vertebra) morphology is extremely specific, and that a scoring method for comparing morphology may be useful as a quantitative tool for identification

    Variations on the Author

    Get PDF
    “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

    Get PDF
    We 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
    corecore