1,721,589 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
Palazzo Novelli a Carinola: la storia, il rilievo, il restauro
No full textIl volume riepiloga le attività di restauro della fabbrica quattrocentesca rivelatasi un importante testiminianza di architettura catalan
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
Visualizzazione di parametri morfologici e ambientali a supporto della pianificazione urbana
Full text linkNell’attuale scenario di urbanizzazione e crescita della popolazione urbana, numerose strategie di mitigazione e adattamento stanno venendo sviluppate al fine di affrontare le problematiche ambientali e gli effetti dei cambiamenti climatici (i.e. produzione di energia da fonti rinnovabili, agricoltura urbana, regolazione microclimatica etc.). Tali soluzioni sono strettamente correlate all'utilizzo delle superfici urbane (i.e. involucro degli edifici, strade, spazi pubblici, ecc.). Tuttavia, gli attuali metodi di pianificazione urbana mostrano la mancanza di un approccio sistemico in grado di allocare ed eventualmente integrare più utilizzi, evitando soluzioni sub-ottimali.
La pianificazione urbana svolge e svolgerà sempre più un ruolo essenziale nella gestione dei conflitti tra diversi usi e nella loro integrazione finalizzata alla realizzazione di città resilienti e sostenibili. Ciò implica decisioni spazialmente esplicite relative all’allocazione di funzioni specifiche delle superfici, alla loro estensione e disposizione. L’ articolo dimostra come tale processo possa essere supportato da informazioni accurate circa la distribuzione spaziale di parametri chiave nella determinazione di strategie efficaci, quali ad esempio le caratteristiche morfologiche e geometriche dell'area urbana, i materiali utilizzati, la termodinamica e la dinamica dei fluidi applicata a irraggiamento solare e vento.
Questo studio infine presenta le potenzialità d’utilizzo di modelli spaziali a supporto delle decisioni relative all’uso delle superfici urbane e alla loro disposizione spaziale attraverso il caso specifico di un distretto situato a Bolzano
Repurposing Ketamine in Depression and Related Disorders: Can This Enigmatic Drug Achieve Success?
Full text linkRepurposing ketamine in the therapy of depression could well represent a breakthrough in understanding the etiology of depression. Ketamine was originally used as an anesthetic drug and later its use was extended to other therapeutic applications such as analgesia and the treatment of addiction. At the same time, the abuse of ketamine as a recreational drug has generated a concern for its psychotropic and potential long-term effects; nevertheless, its use as a fast acting antidepressant in treatment-resistant patients has boosted the interest in the mechanism of action both in psychiatry and in the wider area of neuroscience. This article provides a comprehensive overview of the actions of ketamine and intends to cover: (i) the evaluation of its clinical use in the treatment of depression and suicidal behavior; (ii) the potential use of ketamine in pediatrics; (iii) a description of its mechanism of action; (iv) the involvement of specific brain areas in producing antidepressant effects; (v) the potential interaction of ketamine with the hypothalamic-pituitary-adrenal axis; (vi) the effect of ketamine on neuronal transmission in the bed nucleus of stria terminalis and on its output; (vii) the evaluation of any gender-dependent effects of ketamine; (viii) the interaction of ketamine with the inflammatory processes involved in depression; (ix) the evaluation of the effects observed with single or repeated administration; (x) a description of any adverse or cognitive effects and its abuse potential. Finally, this review attempts to assess whether ketamine’s use in depression can improve our knowledge of the etiopathology of depression and whether its therapeutic effect can be considered an actual cure for depression rather than a therapy merely aimed to control the symptoms of depression
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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