1,720,988 research outputs found
Concept Design of a module for reversible HVDC submarine deep-water sea electrodes
No full textOver the last years many HVDC (High Voltage Direct Current) links are being studied, commissioned and built. Among the constraints, one of the most important is the corrosion risk analysis of surrounding submerged/buried metallic structures. If the coastal area is rich of metallic structures, corrosion risk may be unacceptable, and the electrode must be located at greater distance offshore. As seawater at the selected location may be considerably deep, many issues about maintenance and mechanical resistance must be considered, and related problems must be solved. We developed a modular electrode able to cope efficiently with all such requirements
Concept Design and Development of a Module for the construction of reversible HVDC submarine deep-water Sea Electrodes
No full textOver the last years many HVDC (High Voltage Direct Current) links have been studied, commissioned and built. Among the constraints, one of the most important is the corrosion risk for surrounding submerged/buried metallic structures. When the coastal area is rich of metallic structures, corrosion risk may be unacceptable, requiring the relocation of the electrode at significant distance offshore. As seafloor at the selected location may be considerably deep, relevant issues about installation and maintenance must be addressed in the design phase. A modular electrode design, able to cope efficiently with all such requirements and minimizing the overall cost has been developed
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
Indagine territoriale sulla qualità del servizio elettrico: un’esperienza in corsoGiornata di studio: “La qualità del servizio elettrico per gli utenti industriali”, Bari, dicembre 2004.
No full textVariations 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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