1,721,064 research outputs found
El avance de la frontera agropecuaria en el Valle Central de Catamarca
Full text linkEl avance de la frontera agropecuaria es la sustitución de áreas naturales hacia tierras productivas que ocasiona, generalmente, pérdida de bienes y servicios ecosistémicos. Durante los últimos 20 años, en Argentina, miles de hectáreas fueron desmontadas para establecer diferentes tipos de cultivos. La provincia de Catamarca, caracterizada históricamente por poseer pequeñas explotaciones agropecuarias, no estuvo ajena a este proceso.EEA CatamarcaFil: Ahumada, Rodrigo José. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Catamarca; Argentin
Incendio en las Sierras de Ancasti, mayo-agosto 2020
Full text linkEl objetivo de este informe es presentar un relevamiento de la superficie afectada por los fuegos de grandes dimensiones ocurridos recientemente en dicho cordón montañoso y estimar las fechas de inicio de las quemas.EEA CatamarcaFil: Ahumada, Rodrigo José. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Catamarca; ArgentinaFil: Alvarez Ocampo, Sonia Viviana. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Catamarca; Argentin
Incendio en las Sierras de Ambato, Agosto 2020
No full textAnte los incendios últimos ocurridos en nuestra provincia investigadores del INTA Catamarca, mediante el uso de imágenes satelitales, evaluaron los daños de las zonas afectadas. Para ello se elaboró un informe con el objetivo de presentar un relevamiento de la superficie afectada por el fuego de grandes dimensiones en el mencionado cordón montañoso.EEA CatamarcaFil: Ahumada, Rodrigo José. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Catamarca; ArgentinaFil: Alvarez Ocampo, Sonia Viviana. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Catamarca; Argentin
Formulación de Proyectos: Perfil de proyectos de Educación Ambiental
Full text linkPresentación en diapositivasPresentación destinada a docentes de todos los niveles de la provincia que participan de los distintos proyectos elaborados en el marco de la comisión provincial de educación ambiental (COPEA). La misma tiene como objetivo fortalecer las capacidades docentes y consolidar un perfil de proyectos de educación ambiental que permita perfeccionar los procesos de formulación y evaluación de los mismos.EEA CatamarcaFil: Alvarez Ocampo, Sonia Viviana. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Catamarca; ArgentinaFil: Ahumada, Rodrigo José. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Catamarca; Argentin
Receptividad ganadera en pastizales de la Sierra de El Alto, Ancasti, Catamarca
Full text linkEn la Sierra de El Alto - Ancasti (Catamarca), los pastizales naturales son la fuente casi exclusiva de forraje para el ganado. Con el propósito de conocer la receptividad ganadera de estos ambientes, se realizaron mediciones de productividad forrajera en 5 sitios representativos del área.EEA CatamarcaFil: Quiroga, Raul Emiliano. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Catamarca; ArgentinaFil: Ahumada, Rodrigo José. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Catamarca; ArgentinaFil: Ahumada, Luis Paulo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Catamarca. Agencia de Extesión Rural Santa Rosa; Argentin
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
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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