1,722,577 research outputs found
Turbulent convective heat transfer in an inclined cylinder with liquid sodium
No full textThe natural turbulent convection of liquid sodium in a cell with end heat exchangers providing a fixed temperature drop is investigated experimentally. The cell is a straight thermally isolated tube with inner diameter D = 96 mm and length L ≈ 20D. Experiments are carried out for a fixed Rayleigh number Ra = 2.4 • 10^6 and for different tube orientations with respect to the gravity. A strong dependence of power transferred along the tube on the inclination angle is discovered: Nusselt number varies by an order in the investigated range of angles with a maximum approximately at 65 degrees to the vertical. Presented characteristics of the large-scale circulation (LSC) and turbulent temperature fluctuations demonstrate the fact that the convective heat transfer is mainly determined by the velocity of the LSC
53. Vasiliev (A. A.) History of the Byzantine Empire. 324-1453. Madison, 1952
No full textGuilland Rodolphe. 53. Vasiliev (A. A.) History of the Byzantine Empire. 324-1453. Madison, 1952. In: Revue des Études Grecques, tome 66, fascicule 311-313, Juillet-décembre 1953. p. 522
Vasiliev (A. A). Histoire de l'Empire byzantin. Traduit du russe par Brodin (P.) et Bourguina (Α.)
No full textDraguet R. Vasiliev (A. A). Histoire de l'Empire byzantin. Traduit du russe par Brodin (P.) et Bourguina (Α.). In: Revue belge de philologie et d'histoire, tome 12, fasc. 3, 1933. pp. 735-737
Vasiliev (A. A). Histoire de l'Empire byzantin. Traduit du russe par Brodin (P.) et Bourguina (Α.)
No full textDraguet R. Vasiliev (A. A). Histoire de l'Empire byzantin. Traduit du russe par Brodin (P.) et Bourguina (Α.). In: Revue belge de philologie et d'histoire, tome 12, fasc. 3, 1933. pp. 735-737
53. Vasiliev (A. A.) History of the Byzantine Empire. 324-1453. Madison, 1952
No full textGuilland Rodolphe. 53. Vasiliev (A. A.) History of the Byzantine Empire. 324-1453. Madison, 1952. In: Revue des Études Grecques, tome 66, fascicule 311-313, Juillet-décembre 1953. p. 522
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
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