1,721,232 research outputs found
Levey, D. J., Silva, W. R. & Galetti, M. (eds). — Seed, dispersal and frugivory : Ecology, evolution and conservation. CABI Publishing, Oxon & New York. 2002
No full textErard Chr. Levey, D. J., Silva, W. R. & Galetti, M. (eds). — Seed, dispersal and frugivory : Ecology, evolution and conservation. CABI Publishing, Oxon & New York. 2002. In: Revue d'Écologie (La Terre et La Vie), tome 59, n°1-2, 2004. pp. 404-406
Questions arising from the application of Best-Estimate Methods to the Angra-2 NPP Licensing Process in Brasil
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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
Exploitation of BEPU Approach for Licensing purposes
No full textBest estimate codes supplemented by uncertainty evaluation (i.e. BEPU = Best Estimate
Plus Uncertainty) achieved a suitable maturity and can be applied to the licensing process
of water cooled nuclear power plants. The Final Safety Analysis Report (FSAR) constitutes
the key element for demonstrating the safety of a nuclear power plant. Thus BEPU
approach is relevant to the FSAR.
The present paper deals with a proposal to apply a BEPU approach to the FSAR of Atucha-
2 PHWR (Pressurized Heavy Water Reactor) now in construction in Argentina with
operation start expected in 2010. Atucha-2 is a vessel type two loop KWU-Siemens-
AREVA plant with vertical core channels and hydraulically separated moderator and
coolant circuits.
The following key aspects are at the basis of the possible application of the BEPU approach
in the Atucha-2 licensing process:
• The accident classification: the standard distinction between Anticipated Operational
Occurrences, Design Basis Accident and Beyond Design Basis Accident is
considered. However, different assumptions are proposed for the analysis of selected
transients belonging to individual classes.
• Conservatism is embedded into the reactor design including protection system and
related set-points; furthermore, conservatism can be added in the analyses through the
proper choice of boundary and initial conditions or by (typically) preventing
redundant trains of emergency core cooling systems (ECCS) from contributing in
recovering the plant safety functions.
• A best estimate analysis of phenomena expected in the concerned class of transients
implies the coupled application of system thermal-hydraulics, computational fluid
dynamics and three-dimensional neutron kinetics computational tools other than
structural mechanics codes. The demonstration of suitable qualification for the
computational tools constitutes a challenge for the present approach
MONOCLONAL GAMMOPATHY (MG) AND CHRONIC COMPLEMENT ALTERNATIVE PATHWAY DYSREGULATION: FROM GLOMERULOPATHY TO THROMBOTIC MICROANGIOPATHY (TMA)
No full textVariations 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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