1,721,014 research outputs found
Carta Geológico-Económica de la República Argentina
No full textFil: Franchi, Mario R. Ministerio de Economía. Secretaría de Minería. Dirección Nacional de Minería y Geología; Argentina
Hojas 39 M y 40 M, Viedma 39 N, Isla San Blas, Provincia de Buenos Aires y Río Negro
No full textFil: Franchi, Mario. Ministerio de Economía. Secretaría de Minería. Servicio Geológico Nacional y Servicio Minero Nacional; Argentina
Aspectos Geológicos de Algunas Localidades del Mioceno Medio de Patagonia Occidental
No full textInforme producido por impresora, sin buen contraste. Escaneo de median a baja calidadFil: Franchi, Mario R. Dirección Nacional de Minería. Secretaría de Industria y Minería. Ministerio de Economí
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
Sitios de Interés Geológico de la República Argentina
Full text linkFil: Ardolino, Alberto. Servicio Geológico Minero Argentino, Instituto de Geología y Recursos Minerales; Argentina.Fil: Franchi, Mario. Servicio Geológico Minero Argentino, Instituto de Geología y Recursos Minerales; Argentina.Fil: Salani, Flavia. Departamento de Geología, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires-CONICET; Argentina.El paisaje más descollante del sur de la provincia de Río Negro y norte de la del Chubut es la meseta de Somún Curá. Difícilmente accesible, no ha sido transitada por mucha gente, y hasta ahora muy pocos han tenido la fortuna de internarse y conocerla en su totalidad. Su aspecto es el del más absoluto desierto, y la habitan menos de 500 personas, exiguo número para una extensión de más de 25.000 kilómetros cuadrados, comparable a la de algunos países europeos. La meseta está constituida por extensos mantos de lavas basálticas que se derramaron durante el Cenozoico, sobre un terreno prácticamente llano, constituido en su gran mayoría por rocas fácilmente erosionables. Debido a ello, las áreas no cubiertas por las lavas más duras se degradaron más rápidamente, conformándose así el paisaje que vemos hoy, una superficie más o menos regular, topográficamente alta en relación con las áreas vecinas, de las que está separada por márgenes abruptos. En general, el relieve mesetiforme sólo está interrumpido por largos cañadones, bajos sin salida, grandes entalladuras y «las sierras», centros que emitieron lavas de composición fundamentalmente traquítica, las que se proyectan por encima de la meseta hacia alturas de 1500 - 2000 metros sobre el nivel del mar
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
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