1,721,201 research outputs found
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
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
Solitudine e autoefficacia percepita in adolescenza
No full textINQUADRAMENTO TEORICO
In adolescenza il significato che viene associato al senso di solitudine può assumere valenze differenti. A volte è identificata con la percezione di isolamento sociale e quindi collegata a vissuti negativi, altre viene ricercata, se non addirittura desiderata, in quanto occasione importante che permette di riflettere su di sé e ritrovare quell’equilibrio interno che spesso i ritmi della vita di tutti i giorni spezzano (Rotenberg e Hymel, 1999). A questo proposito da tempo in letteratura si riconosce che al termine “solitudine” possono essere attribuiti tre diversi significati (Marcoen e Goossen 1993; Corsano 1999; Miceli 2003):
1- quella che in inglese viene definita aloneness, ovvero la condizione oggettiva di solitudine fisica, priva della connotazione emotiva ad essa associata;
2- la loneliness, che indica la dimensione soggettiva della solitudine, la sofferenza psicologica che deriva dal “sentirsi soli”; il senso di vuoto e di mancanza che può essere ricondotta, ma non necessariamente, alla aloneness;
3- la solitude, quel sottile, ma profondo, desiderio di solitudine intesa come momento in cui l’individuo si isola per riflettere su di sé o per impegnarsi in attività cognitivamente impegnative, come ad esempio i momenti di produzione artistica; Si tratta di un tipo di solitudine che rappresenta per la psicoanalisi un segno di maturità dello sviluppo emozionale (Winnicott, 1958) e una condizione necessaria per l’autorealizzazione dell’individuo (Storr 1989). Anche nell'ambito psicosociale si sostiene la connotazione positiva della capacità di “stare da solo” (solitude): essa può essere un'occasione per riflettere su di sé e sul mondo che ci circonda, una sospensione necessaria per risolvere problemi complessi che richiedono una particolare attenzione e concentrazione. In questo senso la solitude appare come una dimensione fondamentale ed ineliminabile della condizione adolescenziale, un mezzo per raggiungere la propria interiorità in una fase di definizione dell'identità (Larson 1990; Miceli 2003).
La ricerca psicosociale ha però mostrato uno scarso interesse per lo studio della solitude focalizzandosi principalmente sull’analisi delle possibili relazioni tra il vissuto negativo della solitudine (loneliness) e costrutti quali l'autostima (Leary 1999; Miceli 2003) e la depressione (Wiebe e Mc Cabe 2002; Rook).
SCOPO
Analizzare l’esperienza del senso di solitudine in un campione di adolescenti con particolare attenzione alla relazione tra l’espressione positiva della solitudine (solitude) e la percezione di autoefficacia emotiva, scolastica e nella soluzione di problemi.
IPOTESI
Gli adolescenti che ricercano volontariamente momenti in cui stare soli sono quelli che mostrano complessivamente livelli maggiori di autoefficacia emotiva, scolastica e nella soluzione di problemi.
SOGGETTI
Circa 400 soggetti tra i 14 e 16 anni che frequentano la scuola superiore e residenti nelle città di Modena e Reggio Emilia.
STRUMENTI
1-associazioni libere alla parola stimolo “SOLITUDINE”
2-LLCA (Louvain Loneliness Scale for Children and Adolescents) (Marcoen, Goossens e Caes, 1987);
3-Scala di Autoefficacia Percepita nella gestione delle Emozioni Negative e Positive (Caprara e Gerbino 2001);
4-Scala di Autoefficacia Percepita nella Soluzione di Problemi (Pastorelli, Vecchio e Boda 2001);
5-Scala di Autoefficacia Scolastica Percepita (Pastorelli e Picconi 2001);
6-Scheda socioanagrafic
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
The challenge of antiretroviral-drug-resistant HIV: is there any possible clinical advantage?
No full textResistance to antiretroviral drugs is associated with reduced treatment options and, therefore, increased risk of disease progression or death. Despite the main goal of antiretroviral therapy should be achievement of complete suppression of HIV replication, the accumulation of resistance mutations in patients with multiple treatment failure makes this objective often difficult, or even impossible to obtain. Thus, clinicians should be aware about the complex relationship between drug pressure and viral replication capacity and about some potential advantages related to antiretroviral drug resistance. The two main biological mechanisms that can be at the origin of these clinical benefits are: reduction of viral fitness and viral hypersusceptibility. The term "fitness" indicates the ability of HIV to maintain high rate of replication capacity in presence of antiretroviral drugs. Consequently, replication capacity, high in presence of wild type virus, tends to decrease when HIV must adapt its enzymes to work in presence of drugs. A reduction of viral fitness is observed in patients harbouring mutations conferring resistance to all the three classes of antiretroviral drugs currently in use. Particularly, the effects on reduction of replication capacity related to M184V mutation in reverse transcriptase are analyzed. Viral isolates with reduced susceptibility or resistance to some antiretroviral drugs may exhibit significant increased susceptibility to other drugs acting on the same enzyme. This phenomenon is known as hypersusceptibility and can be demonstrated in vitro by phenotypic assays. Phenotypic hypersusceptibility has been demonstrated for all three drug classes. Particularly, NNRTI hypersusceptibility, associated with NRTI mutations, is analyzed and discussed
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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