1,720,961 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
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
Alcune osservazioni storiche e teoriche sulla valutazione psicodinamica. : commento al capitolo "La formulazione del caso come finale di partita e non come mossa di apertura nei modelli relazionali e psicodinamici”
No full textAppropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe 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
Get PDFWe 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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Epidermoid cyst of the adult testis. Case report and literature review
No full textBACKGROUND: Testicular epidermoid cysts (TEC) are rare lesions often incidentally discovered and radically treated. They present as testicular firm palpable mass. Ultrasound and MR may be useful in characterizing the lesion. Diagnosis depends on histology. The real understanding of biological behaviour and clinical management is unresolved. We report the case of a young male who underwent to surgical keratocyst enucleation.
CASE REPORT: A 16 y.o. male presented for a firm mass in the testis. The right testis presented with a palpable painless mass in the middle portion. Inguinal and supraclavicular lymph nodes were negative. Serum markers (AFP, bHCG, PLAP and LDH) were normal. Scrotal sonography (US) reported a well circumscribed 2 centimetres mass with intervening septa and coexisting solid areas: intralesional calcifications were not described. Magnetic Resonance (MR) ruled out secundarisms and intralesional contrast enhancement. Biopsy with was offered.
RESULTS: Frozen section was suggestive for mature keratocyst and surgical enucleation of the mass was offered.
DISCUSSION: TEC are benign tumors which arise from ectoderm, endoderm or mesoderm tissues. They account for around 1-2% of all testicular masses and tipically present in mid-adulthood. The etiology is still debated and whether these should be classed as a variant of mature teratoma is still under discussion. Simple TEC correspond to the prepubertal-type teratoma of the 2018 WHO classification and are unrelated to germ cell neoplasm in situ (GCNIS). Post-pubertal variant may be more frequently associated with invasive GCT and should be radically treated especially when bad prognostic features coexist: due to this reason the are identifyed as complex TEC. Clinically keratocysts are highly indistinguishable to all testicular neoplasms. Serum markers are negative too. Sonographic study (US) may guide diagnosis: they present as non-vascular, well marginated intratesticular masses with a lamellar ‘onion skin’ or ‘bull-eye’ image and avascular centre. Contrast enhanced ultrasound (CEUS) and Magnetic Resonance (MR) also provide with more informations since the absence of contrast enhancement highly suggest the benign nature of the lesions. Diagnosis only depends on histology: differentiation from coexisting enthities such as teratomas, germ cell tumors (GCT) and granulomatous disease is mandatory also in pre-pubertal forms. Microscopically, cellular atypia, mitotic activity, necrosis, hemorrhage and epythelial hyperplasia are usually missing in pre-pubertal ones totally suggesting a benign behaviour. Moreover, no case of recurrence or metastases have been to date reported in literature: partial orchiectomy or testis-sparing excision with frozen section is becoming day by day the standard treatment.
CONCLUSION: Testicular keratocysts are rare lesions commonly presenting in young male and indistinguishable from other testicular lesions. Pre- and post-pubertal form represent the main variants. Biologic behaviour and clinical management is still unresolved. Pre-pubertal form are not related to IGCNIS and no cases of spreading have been reported to date: differently from post-pubertal ones they are considered benign tumors to date. Serum markers, sonographic features and MR may be helpful in making diagnosis and surgical planning. Only histology confirms the nature of the lesion and ruling out coexisting histotype. The importance of accurate diagnosis is crucial for preventing unncessary orchiectomy since testicular sparing surgery shoudl be offered
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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