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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
LIVELLI DI TOSSICITà NELLE ACQUE REFLUE URBANE DEPURATE E NEI RELATIVI CORPI RECETTORI MARINI
No full textInfluence of the impactor mass on the dynamic behaviour of woven carbon/vinylester laminates
No full textFiber-reinforced laminar composite structures are widely used in several industrial sectors like aerospace and automotive due to their extraordinary peculiarities. This work deals with the influence of the impactor mass on the behaviour of carbon/vinylester woven laminates subjected to low velocity impact (LVI) events, very common in the cited fields. Samples with two different thicknesses were tested with a drop weigh machine using three nominal impact energy values and three different impactor masses. To highlight any influence of the impactor mass, the impact behaviour and the evolution of the damage suffered by the specimen examined were systematically analyzed through confocal microscope inspections and ultrasound investigations. Results also discussed in terms of strain rate sensitivity and mass of the specimen emphasized the prevalence of dissipative interlaminar phenomena and a more marked influence of the impactor mass on the thinnest laminates
Potere depurativo del terreno agrario ammendato con compost: aspetti microbiologici delle acque di drenaggio
No full textLaparoscopic splenectomy - How to make it easier using an innovative atraumatic suction grasper
No full textStrumento da presa atraumatico a ventosa : utilizzo del prototipo in corso di laparosplenectomia
No full textEarly and prolonged continuous hemodiafiltration for the treatment of severe Metformin-Associated Lactic Acidosis
No full textIn this article, we discuss the case of a 42-year-old female diabetic patient who developed severe lactic acidosis,
coma, shock, rhabdomyolysis, and renal and hepatic failure during metformin therapy after alcohol abuse. The
APACHE II score of this patient was 38, which is associated with an estimated mortality rate >88%. Conventional
treatment of acidosis with IV infusion of sodium bicarbonate (400 mmol) was ineffective in restoring a normal
acid/base balance. Lactic acidosis was successfully treated with bicarbonate-buffered continuous veno-venous
hemodiafi ltration. The patient also had a complete recovery from all complications
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
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