1,726,335 research outputs found
Vasco de Goma, descubridor portugues, litografía
No full textI.O. ""VASCO DE GAMA. DESCUBRIDOR PORTUGUES 1469 - 1524"
Fernando de Magallanes, Navegante Portugues, pintura
No full textI.O. ""FERNANDO DE MAGALLANES. 1480-1521. NAVEGANTE PORTUGUES"
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
No full text“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
No full textWe 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
Author-Character Conflict in Mist
No full textA paper written for Honors 181, Don Quixote and the Experimental Novel, Fall 2008. MacQuarrie examines the novel Mist by Miguel de Unamuno to discuss the dynamic relationship that exists between an author and his
creations.College of Arts and ScienceDepartment of Spanish and Portugues
Outlet Works for Cerrillos Dam, Cerrillos River, and Portugues Dam, Portugues River, Puerto Rico: Hydraulic Model Investigation
No full textSource: https://erdc-library.erdc.dren.mil/jspui/Tests were conducted on a 1:24- scale model of the outlet works for the Cerrillos and Portugues Dams located in Puerto Rico. The purpose of the model investigation was to determine the performance of the stilling basins for the full range of discharges with minimum head pool and the optimum riprap protection plan for the exit channel. The model reproduced a schematic of the intake tower, conduit transition, 60 percent of the conduit length, the stilling basins, and exit channel. The original design stilling basin (type 1) for the Cerrillos outlet works performed satisfactorily for low discharges of 500 cfs and less, and for the higher range of discharges between 1500 and 2500 cfs (design discharge). However, with the intermediate discharge of 1000 cfs, eddy conditions developed. Recommended modifications (type 14 stilling basin) incorporated into the original design included extending the invert immediately downstream from the outlet portal horizontally for 10 ft, raising the basin apron, relocating and reducing the size of the baffle blocks, and terminating the basin with a sloping end sill. These modifications produced satisfactory flow conditions for the full range of discharges. The optimum riprap protection plan was developed for the exit channel. Performance of the type 1 stilling basin design for the Portugues outlet works was generally satisfactory with discharges ranging from 250 to 1100 cfs (design discharge). Eddy conditions did not develop for any discharge observed, but the water surface in the basin was rougher with the design discharge of 1100 cfs than that desired. Recommended modifications (type 4 stilling basin) incorporated into the original design included extending the invert immediately downstream from the outlet portal horizontally 10 ft, reducing the width of the baffle blocks, and terminating the basin with a sloping end sill. The overall length of the structure was increased 10 ft to retain the original apron length. The optimum riprap plan was also determined for the exit channel. The conduits of both Cerrillos and Portugues outlet works were designed to provide for river diversion during construction of the dams. When the dams are completed, the flow will be regulated so that only bank-full capacities will be passed through the stilling basins. The conduit capacities were 4500 cfs for Cerrillos and 5300 cfs for Portugues. However, the stilling basins were designed for 2500 cfs (Cerrillos) and 1100 cfs (Portugues), the bank-full capacities downstream. Therefore, considerable damage to the downstream exit channel will occur should it become necessary to pass the conduit design flow through the outlet works
Dispelling the Myths Behind First-author Citation Counts
No full textWe 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
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