1,720,966 research outputs found
Low-Cost Houses for Self-Construction with Precast Wall Panels
No full textThe experience is described of a low-cost housing project developed in the past years in Costa Rica. suited for its particular climate and social conditions. The construction system provides precast prestressed concrete panels with thin cross-section, that can be moved and erected by few non specialized people. without the help of machinery. A full one-family house is easily built by the users with some help, The structure is made of bearing wall panels, clamped in a channel on foundation and linked together on top by a wooden rod. Wooden truss-beams support a light roof and realize a horizontal diaphragm, too, System's main features are: safety (dimensioned against wind and seismic actions), security (concrete walls); flexibility of lay-out and ease of adding rooms for enlarging the house; economy (self-construction); pleasing appearance. More than 1200 house's have been built with it, in the frame of a government granted program
MEMS and combined MEMS/LC technology for mm-wave Electronic Scanning
No full textThis paper proposes two innovative solutions
for the exploitation of MEMS and Liquid Crystal (LC)
technology in mm-wave electronic scanning
reflectarrays: a MEMS-only approach, where the
switches are used to obtain reconfigurable elementary
cells with 1-bit of phase resolution and a LC/MEMS
combined solution, able to provide a continuous phaseshift
up to 180°
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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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