1,721,351 research outputs found
Scarpat (0.) - La relazione tra solari e produttività in1modello neoclassico di sviluppo.
No full textBousquet G.-H. Scarpat (0.) - La relazione tra solari e produttività in1modello neoclassico di sviluppo.. In: Revue économique, volume 19, n°3, 1968. pp. 556-557
Scarpat (0.) - La relazione tra solari e produttività in1modello neoclassico di sviluppo.
No full textBousquet G.-H. Scarpat (0.) - La relazione tra solari e produttività in1modello neoclassico di sviluppo.. In: Revue économique, volume 19, n°3, 1968. pp. 556-557
Impianti Integrati Solari e Geotermici: un’Analisi Prestazionale
No full textFacendo uso dell’ambiente di programmazione TRNSYS, si è condotta un’analisi sulle prestazioni di impianti integrati solare-geotermico utilizzati per la produzione di acqua sanitaria e per la climatizzazione invernale. Il caso di studio di partenza è quello di un’abitazione mono-familiare sita a Brindisi. Creati e testati, dapprima in maniera separata, i modelli di impianti solare e geotermico sono, poi, stati integrati nell’ottica di utilizzare l’acqua calda proveniente dal collettore solare termico nel circuito idronico di scambio a terreno della pompa di calore per mantenerne alta la temperatura di evaporazione. Per questa applicazione, i miglioramenti in termini di consumi e di efficienza dell’impianto prodotti con l’approccio integrato si sono rivelati più ridotti delle attese. Gli studi hanno, in seguito, riguardato le prestazioni dell’impianto integrato in diverse configurazioni caratterizzate da differenti proporzioni tra la superficie dei collettori solari e l’accumulo termico. Lo stesso modello è stato poi applicato a utenze del tipo ufficio con risultati più incoraggianti
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
On the outer boundary of the sunspot penumbra
No full textComparison of photographic observations and vector-magnetograph measurements demonstrate that the outer boundary of sunspot penumbra - even in complex sunspot groups - closely follows the 0.075 T iso-gauss line of the total value of the magnetic field, corresponding approximately to the equipartition value in the photosphere. Radio observations also show this feature. The thick penumbra model which interchange convection (Jahn and Schmidt, 1994) gives the best explanation of the penumbral structure
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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