1,720,964 research outputs found
La economía pesquera y el cambio climático¿en dónde estamos y hacia a dónde deberíamos ir?
Get PDFLa gestión económica de los recursos pesqueros ha motivado una amplia literatura académica, tanto teórica como empírica, que tiene una larga trayectoria y que se encuentra en renovación constante. Sin embargo, el caso de los impactos económicos y sociales del cambio climático en la pesca es un tópico relativamente poco explorado. El vacío se hace más notable en comparación con la producción en las ciencias naturales sobre el mismo tema. Este trabajo revisa la literatura económica de la pesca y su potencial para el análisis desde la óptica del cambio climático, como así también los estudios que vinculan directamente el cambio climático con este sector. El foco está puesto en la pesca marítima de captura. La investigación realizada destaca la existencia de trabajos con modelos integrados ecológicos-económicos, los cuales ofrecen una perspectiva promisoria para su profundización. Las conclusiones señalan la conveniencia de enfoques interdisciplinarios capaces de vincular los efectos antrópicos del cambio climático sobre la biomasa y las actividades económicas.Fil: Carciofi, Ignacio
How can the input-output matrix be used to analyze the multiplier effects and linkages of the fishing sector? An exercise for a set of latin american countries
Get PDFEl sector pesquero en Argentina, Chile, México y Perú presenta ventajas naturales comparativas y un valor socioeconómico relativamente importante. Sin embargo, históricamente, la mayor parte de los esfuerzos de la política económica vinculada a la explotación de recursos naturales se ha concentrado en la gestión de actividades en otros sectores. Esto se debe, en parte, a la presunción de que el sector pesquero no cuenta con el potencial para generar efectos que impulsen al resto de sectores económicos. Asimismo, la evidencia empírica sobre los efectos multiplicadores y relaciones interindustriales de dicho sector para América Latina es escasa. En ese marco, el objetivo de esta investigación es valuar la importancia del sector pesquero en los principales países productores de la región. Para ello, se utilizan matrices insumo-producto (MIP) para estimar los efectos multiplicadores e indicadores de encadenamientos productivos en el sector. Además, los datos analizados corresponden a los últimos disponibles al momento de esta investigación, la cual está enmarcada en un proyecto del Inter-American Institute for Global Change Research. Finalmente, este estudio constituye un aporte a la literatura en tanto que presenta evidencia sobre la utilidad de este tipo de datos y la aplicación de metodologías para la valuación de los efectos económicos totales en la actividad pesquera y el análisis de sus relaciones interindustriales. Además, se muestra que un análisis apartir de la matriz insumo-producto puede ser útil para hacer política pública vinculada a la gestión económica de un recurso natural como es el proveniente de la pesca y la acuicultura.The fishing sector in Argentina, Chile, Mexico and Peru presents comparative natural advantages and a relatively important socioeconomic value. However, historically most of the policy linked to the exploitation of natural resources have focused their efforts on the management of other activities. This is due, in part, to the assumption that the sector does not have the potential to generate effects that boost the rest of the economy. However, the empirical evidence on its multiplier effects and inter-industrial relations for Latin America is scarce. Within this framework, the objective of this research is to carry out a methodological exercise that allows assessing the importance of the fishing sector in the main producing countries of the region. For this, multiplier effects and indicators of productive interlinkages are estimated based on input-output matrices. The data correspond to the latest available at the time of this research, which is framed in a project of the Inter-American Institute for Global Change Research. This study constitutes a contribution to the literature, as it presents evidence on the usefulness of this type of data and methodologies for the assessment of the total economic effects of the activity and the analysis of its interindustrial relations. Finally, this research shows that an analysis based on the input-output matrix can be very useful for policy linked to the economic management of a natural resource such as that from fishing and aquaculture.Fil: Sánchez Vargas, Isabela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina. Universidad Nacional de Misiones. Facultad de Cs.económicas; ArgentinaFil: Carciofi, Ignacio Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Instituto Interdisciplinario de Economía Política de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Económicas. Instituto Interdisciplinario de Economía Política de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Económicas. Departamento de Economía; 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
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
Condicionantes y estrategias para la explotación sostenible de la merluza argentina
Get PDFFil: Merino, María Florencia. Universidad de Buenos Aires. Facultad de Ciencias Económicas. Buenos Aires, Argentina
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