1,721,933 research outputs found
Producción y evaluación de la viabilidad de embriones bovinos criopreservados producidos in vitro
Full text linkFil: Ortega, J. Universidad Nacional de Villa María; Argentina.Fil: Moreira, G. Universidad Nacional de Villa María; Argentina.Fil: Caccia, M. Universidad Nacional de Villa María; Argentina.Fil: Watanabe, Y. F. Universidad Nacional de Villa María; Argentina.Fil: Tríbulo, P. Universidad Nacional de Villa María; Argentina.Fil: Bó, G. A. Universidad Nacional de Villa María; Argentina
Remote data collection near marine glacier fronts unmanned vehicles for autonomous sensing, sampling in the north pole
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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
Development of a Silicon Photomultiplier based dual readout calorimeter: The pathway beyond the proof-of-concept
No full textA first dual-readout fibre calorimeter readout with Silicon Photomultipliers was designed, constructed and tested on beam. This first test completed the proof-of-concept and pointed out some issues to be address in future beam tests. Possible solutions and strategies to overcome these challenges are summarized in this paper
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Wetlands monitoring: hints for innovative autonomous surface vehicles design
No full textWetlands are geographic areas where water meets the earth. They cover between 5% and 8% percent of the Earth’s surface including coastal areas, swamps rivers and lakes. They are essential ecosystems for human life. Various international conventions, directives and projects work on their protection that can help fighting the disasters resulting also from climate change. However, the acquisition and monitoring of environmental parameters in these areas is often difficult and ineffective. Classical vehicles (boats or wheeled vehicles) are not adequate in these areas and sometimes they are inaccessible or dangerous to human beings (critical or extreme environments). The development and the exploitation of innovative unmanned technologies can make surveys faster, more efficient and precise. Autonomous Surface Vehicles (ASVs) can work over extended periods of time and less staffing is required thanks to the high level of autonomy. In this paper, several technological solutions are explored and a modular and portable ASV with an innovative propulsion system suitable for working in shallow water is described
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