1,721,414 research outputs found
Diagnóstico de parámetros físicos de suelos en yerbales del Noreste de Corrientes
No full textEl objetivo de éste trabajo fue realizar un diagnóstico productivo, a través de parámetros físicos del suelo, de las explotaciones
yerbateras un grupo de productores que están ubicados en la zona de influencia de la AER Virasoro.EEA MercedesFil: Gallardo, Roque. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mercedes. Agencia de Extensión Rural Virasoro; ArgentinaFil: Fernandez, Daniel Esteban. Instituto Nacional de la Yerba Mate (INYM). Programa de asistencia técnica a productores yerbateros (PAPETY); Argentin
Ciclo de cine-debate Ciencia y Sociedad
Get PDFEn el marco de la asignatura Introducción a la Biología de la Universidad Nacional de Tierra del Fuego realizamos durante fines del 2013 un ciclo de cine-debate sobre Ciencia y Sociedad que permitió poner en contexto conceptos discutidos en clase en un marco de referencia más amplio para poder pensar cómo la ciencia influye en la sociedad en la que vivimos.Fil: Fernandez, Daniel Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de Tierra del Fuego; Argentin
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
Variations 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
Caso de yerbateros vinculados a la AER INTA Virasoro
No full textA través de la articulación entre el INYM y el INTA, se desarrollaron diversas herramientas programáticas de intervención. Es allí
donde aparece el Programa de asistencia técnica para el pequeño yerbatero (PATEPY), que busca a través de la intervención
pública con profesionales jóvenes y referentes de las agencias de extensión rural del INTA, implementar estrategias de acción a
través de diversas herramientas. En este caso, la propuesta desde el programa fue el trabajo con grupos de productores.
La AER Virasoro trabaja con tres grupos, con un total de 90 productores ubicados en diversas localidades: Colonia Garavi,
Garruchos, Colonia Liebig y Virasoro.EEA MercedesFil: Gallardo, Roque. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mercedes. Agencia de Extensión Rural Virasoro; ArgentinaFil: Fernandez, Daniel Esteban. Instituto Nacional de la Yerba Mate (INYM). Programa de asistencia técnica a productores yerbateros (PAPETY); Argentin
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
Drivers of macroinvertebrate metacommunity structure in Tierra del Fuego rivers
Get PDFAmong the different mechanisms that shape metacommunity structure, species sorting and mass effects are the moststudied and often reported mechanisms. Species sorting it?s related with environmental filtering while mass effects isrelated with high dispersion between communities, that ultimately overrides environmental control. In this paper weaimed at studying metacommunity patterns of stream invertebrates in Tierra del Fuego Island at different spatial scales(province, ecoregion and catchment) and at different positions along the river network, (upstream, mid-stream anddownstream segments) in order to understand the mechanisms driving metacommunity structure. For this purpose, weused complementary approaches based on the analysis of beta diversity index as well as its turnover and nestednesscomponents, which are associated with the two main underlying mechanisms of metacommunity structure (speciessorting and mass effect). Our results indicate that species sorting is the preponderant mechanism structuringmacroinvertebrate metacommunities at larger spatial scales, with an increased importance of mass effects at smallerscales (e.g. catchment). Metacommunities at different positions on the river network exhibit similar values of total betadiversity, turnover and nestedness components. On the other hand, turnover and total beta diversity increased withspatial extent, while nestedness remained constant. Those results suggest that at the catchment scale and along thelongitudinal axis of the rivers other mechanisms, like randomness and species dispersal, are more important inshaping the macroinvertebrate metacommunity.Fil: Fernandez, Daniel Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Villatarco Vazquez, Amanda Paola. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de Tierra del Fuego; ArgentinaFil: Albariño, Ricardo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentin
- …
