1,721,183 research outputs found
Relevamiento sobre el manejo de agroquímicos en chacras de la periferia de la ciudad de Corrientes
Get PDFFil: Castillo, Alicia E. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.Fil: Santillán, Rubén A. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.Fil: Sosa López, Ángela Antonia. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina
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
Estrategias de divulgación de la cultura científica en la comunidad matancera
Get PDFEsta ponencia es un desprendimiento de un proyecto de investigación en curso que se propone conocer y evaluar los dispositivos y las estrategias de comunicación pública de la ciencia que desarrolla la Universidad Nacional de La Matanza, para promover la apropiación social del conocimiento científico y sensibilizar a la población respecto de la producción científica y tecnológica que allí se realiza, habida cuenta de que el público no suele reconocer a las universidades como productoras de ciencia, según la última Encuesta Nacional de Percepción Pública de la Ciencia.
Entendemos que tanto la Extensión como la Comunicación Pública de la ciencia tienden a vincular saberes y conocimientos producidos por la universidad con la comunidad y desde esta perspectiva presentamos este trabajo.
Como investigadoras y partícipes de prácticas de extensión en la comunicación, cabe preguntarnos acerca de las estrategias de divulgación de la cultura científica que ponen en juego las Universidades para contribuir a mejorar la calidad de vida de las poblaciones donde están insertas. Y, en ese sentido, preguntarnos también acerca de qué clase de ciencia vale la pena poner en circulación y el sentido mismo de la acción popularizadora, es decir, divulgar para qué.A su vez, vemos que la comunicación de la ciencia es un concepto bastante complejo porque bajo ese título se agrupan un conjunto heterogéneo de fenómenos comunicacionales que versan sobre contenidos científicos, que se desarrollan en situaciones, registros, contextos y soportes diferentes.
Pero debemos destacar de esa conceptualización, al menos, dos procesos de comunicación: aquel en el que la información científica circula dentro de la comunidad académica, es decir, entre la comunidad de pares, ya sea a través de artículos en revistas del género o en congresos y convenciones; y aquel otro que responde a la idea de divulgación de la ciencia y que pone énfasis en los aspectos de cambio de registro de la práctica científica a la popularizadora.
Es este último proceso de comunicación, que contempla el aspecto de la divulgación,el que nos ha interesado relevar y analizar porque la acción popularizadora se traduce en gran parte de las actividades de extensión que realiza la universidad.-Fil: Lago, María Cristina. Universidad Nacional de Villa María; Argentina.Fil: Castillo, Alicia Susana. Universidad Nacional de Villa María; Argentina.Fil: Herrero, Eugenia. Universidad Nacional de Villa María; Argentina
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
Discussion of Difference Equation Model of Ventricular Parasystole as an Interaction Between Cardiac Pacemakers Based on the Phase Response Curve
Get PDF24 pages, 1 article*Discussion of Difference Equation Model of Ventricular Parasystole as an Interaction Between Cardiac Pacemakers Based on the Phase Response Curve* (Leslie, Nandi Olive; Villegas, Miriam Araceli Nuno; Del Castillo, Alicia Yvonne Simms) 24 page
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
Collective action in the management of a tropical dry forest ecosystem: effects of Mexico's property rights regime
Get PDFDilemmas of natural resources governance have been a central concern for scholars, policy makers and users. Major debates occur over the implications of property rights for common resources management. After the Mexican Revolution (1910-1917), land was distributed mainly as Ejidos conceived as a hereditary but unalienable collective form of property. In 1992, a new Agrarian Law was decreed that allows individual ownership by removing various restrictions over the transfer of land. Scholars have examined the reform mainly focusing on land-tenure changes and environmental fragmentation. This study examines how the new ownership regime is affecting collective decision making in ejidos located in a tropical dry forest (TDF) ecosystem. Information on decision making processes before and after the 1992 reform was gathered through 52 interviews conducted in four ejidos selected along a gradient including agricultural, cattle raising and TDF use. The new individualized land property system reduced collective action in ejidos but not triggered it. Collective action responses to the 1992 reform were buffered by self-organization each ejido already had. Heterogeneous users who shared a short history and showed little understanding of TDF and low dependence on its resources seemed to explain why ejidos have not been able to share a sense of community that would shape the construction of institutions for the collective management of forest resources. However, when a resource is scarce and highly valuable such as water the same users showed capacities for undertaking costly cooperative activities.Fil: Schroeder, Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Provincia de Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Universidad Nacional de Cuyo. Instituto Argentino de Investigaciones de las Zonas Áridas; Argentina. Universidad Nacional Autonoma de Mexico. Centro de Inv.de Ecosistemas; México;Fil: Castillo, Alicia. Universidad Nacional Autonoma de Mexico. Centro de Inv.de Ecosistemas; México
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