1,720,969 research outputs found
Evaluación de genotipos de Populus deltoides como alternativa de diversificación del cultivo de salicáceas en la provincia de San Juan
Full text linkActualmente, el álamo es la especie forestal más difundida en la Región de Cuyo. Gracias a su rápido crecimiento, su facilidad de propagación y su buena adaptación a las condiciones edafoclimáticas de los oasis regadíos, se ha convertido en un cultivo de notable
importancia para la agricultura y silvicultura regional. En la provincia de San Juan, la mayoría de las plantaciones se encuentran conformadas por híbridos de P. x canadensis ‘Veronese’, ‘Guardi’, ‘Conti 12’ e ‘I- 214’ y Populus nigra ‘Álamo criollo’ (Ministerio de Agroindustria 2017).EEA Delta del ParanáFil: Medina, Sindy. Universidad Nacional de San Juan. Facultad de Ingeniería. Departamento de Agronomía; ArgentinaFil: Nosetti, Julia. Universidad Nacional de San Juan. Facultad de Ingeniería. Departamento de Agronomía; ArgentinaFil: Nosetti, Julia. Ministerio de Agricultura, Ganadería y Pesca. Dirección Nacional de Desarrollo Foresto Industrial; ArgentinaFil: Alvarez, Javier Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Delta del Paraná; Argentin
Diferencias entre los clones Populus deltoides ‘Australiano 129/60’ y Populus deltoides ‘Hovyú INTA’ en la exclusión del sodio ante estrés salino
Full text linkLa forestación de pastizales en ambientes con napa cercana a la superficie y escaso drenaje, puede originar procesos de salinización a partir de los cambios que genera en el balance hídrico y la exclusión selectiva de sales que se acumulan en torno a las raíces (Jobbágy & Jackson 2004). Los clones de álamo (Populus spp.) disponibles para la forestación en el Delta del Río Paraná tienen diferencias importantes en las respuestas a estreses abióticos, mecanismos de aclimatación y tasas de crecimiento. La variabilidad de respuestas es posible debido a la amplia diversidad genética que presentan los álamos en general, y a las diferencias intraespecíficas reportadas para los materiales genéticos de la región en particular (Alvarez et al. 2020).EEA Delta del ParanáFil: Bonnin, Sebastían Martín. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Delta del Paraná; Argentina.Fil: Alvarez, Javier Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Delta del Paraná; ArgentinaFil: Faustino, Laura Inés. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Delta del Paraná; ArgentinaFil: Graciano, Corina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal; ArgentinaFil: Graciano, Corina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; Argentin
Plantaciones clonales mixtas como alternativa silvicultural y de diversificación: el ejemplo de los álamos en el Delta del Río Paraná
Full text linkLas plantaciones de álamos del Delta del Río Paraná se concentran en una región conocida como Zona Núcleo Forestal, que comprende parte de los partidos de Zárate, Campana y San Fernando en la Provincia de Buenos Aires, y alcanzan aproximadamente 14.500 ha (Dirección Nacional de Desarrollo Foresto Industrial 2022). Como en otras regiones del mundo, el cultivo de álamos se realiza mediante silvicultura clonal debido a la fácil multiplicación vegetativa de las especies. Es decir, los rodales están compuestos por individuos genéticamente idénticos. Actualmente, en el Delta se planta mayoritariamente un clon (P. deltoides ´Australiano 129/60´) a pesar de contar en el mercado con más de una decena de genotipos seleccionados para la producción (Cortizo et al. 2017). Esto determina una gran superficie forestada con baja variabilidad genética, tanto a nivel predial como a escala de paisaje.EEA Delta del ParanáFil: Bonnin, Sebastían Martín. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Delta del Paraná; Argentina.Fil: Alvarez, Javier Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Delta del Paraná; ArgentinaFil: Faustino, Laura Inés. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Delta del Paraná; ArgentinaFil: Graciano, Corina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal; ArgentinaFil: Graciano, Corina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; 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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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