1,720,986 research outputs found
DIVERSITÀ E DIFFERENZIAZIONE GENETICA DEL PINO SILVESTRE (PINUS SYLVESTRIS L.) IN EUROPA
No full textThermal modelling of GaInAs/AlInAs quantum cascade lasers
No full textWe measured the facet temperature profiles of GaInAs/AlInAs quantum cascade lasers QCLs
operating in continuous wave mode by means of microprobe photoluminescence. These results were
used to evaluate the in-plane k and the cross-plane k thermal conductivities of the active region
and to validate a two-dimensional model for the anisotropic heat diffusion in QCLs. In the
temperature range of 80–250 K, k monotonically increases with temperature and remains one
order of magnitude smaller than the thermal conductivities of bulk constituent materials. We found
an excellent agreement between the calculated and experimental values of the thermal resistance of
GaInAs/AlInAs QCLs operating in continuous wave up to 400 K. Comparison between the
calculated thermal performances of QCLs sharing the same active region structure, but having either
a buried or a ridge waveguide, shows that devices with Au contact layers thicker than 4 m have
better thermal properties than the buried structures
DIVERSITA’ E DIFFERENZIAZIONE GENETICA DEL PINO SILVESTRE (PINUS SYLVESTRIS l.) IN EUROPA
No full text
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
"England belonged to them": Edward Carpenter and Forster's "Utopia" of Masculine Love in Maurice
No full textStarting from Forster's account of the genesis of Maurice after a visit to Edward Carpenter, the essay explores the complex and ambivalent relationship that connects Forster's tale of homosexual self-discovery to Edward Carpenter's thought and life and investigates the way in which Forster's narrative draws on Carpenter evolutionary progressivism and reworks his utopian vision
Bloomsbury between élite and mass culture. A selective introduction
No full textWith its fluid boundaries, the Bloomsbury Group was first and foremost a circle of friends who shared a similar social background and progressive political views. Variously considered an elitist coterie and a democratic avant-garde, the group not only left behind an intellectual legacy as impressive as it was diverse, but also introduced a new way of living and working that helped to mark a definite break with Victorian tradition and paved the way to modernity in British culture
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