1,720,990 research outputs found
Cutaneous ganglion cell tumor of the skin : Case report and review of the literature
No full textWe describe the histological and immunological findings of a cutaneous tumor composed of mature ganglion cells. The tumor was ganglioneuromatous but differed from other ganglioneuromas in that the neurofibromatous proliferating components were absent
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
Relazione Annuale SIR
No full textRelazione dell’Istituto di Anatomia Patologica sull’attività svolta nel 2005 sulla sindrome della morte improvvisa del lattante (SID), della morte inaspettata perinatale (del feto a termine e neonatale) e sulla patologia cardiovascolare.
L’attività di ricerca è proseguita con la collaborazione non solo della Regione Lombardia-Sanità (in base al DGR 49210 e 11693 “Provvedimenti relativi all’adozione di interventi anatomo-patologici e medico-legali finalizzati alla prevenzione, conoscenza e rilevazione dei casi di morte improvvisa del lattante”, ma anche di altre regioni (Emilia Romagna, Toscana, ecc.).
Le linee guida messe a punto in Istituto sono utilizzate in tutte le regioni italiane che collaborano al progetto e saranno applicate in campo internazionale. Infatti lo scrivente è stato nominato membro dell’ISA (Internazionale Stillbirth Alliance) con sede presso l’Università di Harvard (Boston USA).
La rilevanza di tale protocollo è inoltre testimoniata dal progetto della Regione Lombardia (Network dei centri regionali per la riduzione del rischio di morte inaspettata perinatale e di SIDS), che si propone di estendere tale iniziativa in tutti gli ospedali materno-infantili, alfine anche di consentire una obiettiva raccolta di dati ai fini epidemiologici.
E’ infine da rilevare che la proposta di Legge n° 31 “Disciplina del riscontro diagnostico sulle vittime della sindrome della morte improvvisa del lattante (SIDS) e di morte inaspettata del feto”individua la 1a Cattedra di Anatomia Patologica, quale centro di riferimento per la ricerca (Art. n° 2) e di raccolta dati nell’apposita Banca Dati (Art. n° 4).
Deve essere infine sottolineato l’interesse anche di Nazioni dell’America Latina e della Turchia che hanno invitato lo scrivente per corsi di aggiornamento teorico-pratici
Unsuspected imported malaria in a case of sudden infant death
No full textHere we describe the case of a 4-mo-old female who
died suddenly without any apparent cause that was
initially mistaken as a case of sudden infant death syn
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drome. Histologic observation of brain sections revealed
blue-black bodies in erythrocytes of the blood vessels,
suggestive of specific stages of the hematic schizogonic
cycle. Further examinations revealed hemozoin and
hemosiderin deposits in the parenchyma of all organs,
leading to the diagnosis of malaria by Plasmodium falci
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parum (P. falciparum). The death occurred in Italy, the
native country of the infant, two weeks after a Christ-
mas holiday spent in Pakistan, the parents’ birthplace,
which has a high malarial endemicity. As this case
demonstrates, the diagnosis of malaria should always
be considered as a differential diagnosis in subjects,
including infants, that die unexpectedly after returning
from P. falciparum endemic area
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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