1,721,082 research outputs found
Enforcing Team Cooperation: an example of Computer Supported Collaborative Learning in Software Engineering
No full textIn this paper the OTRE experience is presented, as a case study in a larger project named Enforcing Team Cooperation (ETC). Cooperation is one of the keywords in education and in computer assisted instruction, and thus e-learning platforms provide users with specific tools, enabling them to collaborate and/or to cooperate to reach a common objective. Collaboration is considered as a teaching strategy but, in software engineering classes, it has to be a learning outcome too, since students must acquire ability in team working. A specific working environment is needed and the authors propose an experimental set-up based on the Eclipse and Jazz technologies
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
Application of Pulsed Electric Fields technology for improving peeling of tomato fruits
No full textTomato peeling is one of the most critical phase in the industrial transformation of tomato fruits. It generally consists of either a thermophysical treatment (steam blanching +vacuum cooling), or a chemical treatment (adding of caustic soda), which lead to, respectively, a high-energy consumption or a strong environmental impact. The aim of this study was to assess the potential of pulsed electric field (PEF) technology to facilitate the peeling phase of tomato. The effect of PEF treatments of different field strength (E=0.125 — 0.75 kV/cm) and 4 energy input (WT=0.25 — 0.75 kJ/kg), used alone or in combination with steam blanching at different temperatures (50-70°C), on the textural properties (hardness, peel strength) of different Tomato variety (Minitor, Cherry, Taylor, Impact and Dress), was investigated.
Results showed that, regardless the tomato variety, single PEF treatment applied at 25°C in the range of values 0.25-0.5 kV/cm and 0.25-0.50 kJ/kg, significantly affected the textural properties and thus the peelability of tomato fruits. Under these conditions, it was observed a reduction of the peel strengths of, respectively, 47% for Minitor, 55% for Cherry, 69% for Taylor, 62% for Impact, and 41% for Dress variety. No or a slight further improvement was observed when PEF was combined with SB. Consequently, PEF pre-treatment of tomatoes
has the potential to facilitate the peeling of the fruits with considerable reduction of the steam consumption
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