1,720,954 research outputs found
A comparison of socioeconomic dynamics and market performance in lobster and giant freshwater prawn value chains in Sri Lanka
No full textWild-captured lobster fisheries and cultured giant freshwater prawns (GFP) in Sri Lanka cater to high-end markets with significant exports. However, there is a notable gap in existing literature on value chain analysis and market performance aspects in both sectors. This study identified actor profiles and value chain dynamics in both sectors using structural mapping. Market performance was assessed through costs, margins, price spread, and marketing efficiency, with differentiation strategies proposed for sectoral growth. Data collection involved interviewer-administered questionnaires and in-depth interviews with 748 fishers, 44 collectors, and 12 exporters from December 2022 to March 2024. Results highlighted that the lobster value chain was highly export-driven, with a concentration on live trade and premium pricing. Fishers and collectors faced risks from fluctuating stocks and strict regulations, while exporters dealt with logistical and market volatility. Upstream actors often overexploit resources to increase yields, rather than improve quality, leading to unsustainable practices. To mitigate market challenges, actions like promoting products under branding tags such as ‘wild-caught lobster’ and ‘conventionally cultured GFP’, maintaining food safety and quality standards and optimizing logistics are essential for enhancing competitiveness. The GFP sector operates in both domestic and export markets, competing with commodity shrimp. While it provides employment, its financial performance is moderate, limited by high farming costs and pricing competitiveness. Differentiation efforts should focus on sustainable labeling, value-added products, direct exports, and catering to niche markets to boost profitability and reduce dependence on bulk markets.Las pesquerías de langosta silvestre y langostino gigante de agua dulce (GFP) de cultivo en Sri Lanka abastecen a mercados de alta gama con exportaciones significativas. Sin embargo, existe una notable brecha en la literatura sobre el análisis de la cadena de valor y los aspectos del desempeño del mercado en ambos sectores. Este estudio identificó los perfiles de los actores y la dinámica de la cadena de valor en ambos sectores mediante un mapeo estructural. El desempeño del mercado se evaluó a través de costos, márgenes, diferencial de precios y eficiencia de comercialización, y se propusieron estrategias de diferenciación para el crecimiento sectorial. La recopilación de datos incluyó cuestionarios administrados por entrevistadores y entrevistas en profundidad con 748 pescadores, 44 recolectores y 12 exportadores, entre diciembre de 2022 y marzo de 2024. Los resultados destacaron que la cadena de valor de la langosta estaba altamente orientada a la exportación, concentrándose en el comercio de ejemplares vivos y precios prémium. Los pescadores y recolectores se enfrentaban a los riesgos derivados de la fluctuación de las poblaciones y las estrictas regulaciones, mientras que los exportadores lidiaban con la volatilidad logística y del mercado. Los actores aguas arriba a menudo sobreexplotan los recursos para aumentar la producción, en lugar de mejorar la calidad, lo que conduce a prácticas insostenibles. Para mitigar los desafíos del mercado, acciones como la promoción de productos con etiquetas como “langosta silvestre” y “GFP de cultivo convencional”, el mantenimiento de los estándares de inocuidad y calidad alimentaria y la optimización logística son esenciales para mejorar la competitividad. El sector de GFP opera tanto en el mercado nacional como en el de exportación, compitiendo con el camarón comercial. Si bien genera empleo, su rendimiento financiero es moderado, limitado por los altos costos de cultivo y la competitividad de precios. Los esfuerzos de diferenciación deben centrarse en el etiquetado sostenible, los productos con valor añadido, la exportación directa y la atención a nichos de mercado para impulsar la rentabilidad y reducir la dependencia de los mercados a granel.
Comparación de la dinámica socioeconómica y el desempeño del mercado en las cadenas de valor de la langosta y el camarón gigante de agua dulce en Sri Lanka
Full text linkWild-captured lobster fisheries and cultured giant freshwater prawns (GFP) in Sri Lanka cater to high-end markets with significant exports. However, there is a notable gap in existing literature on value chain analysis and market performance aspects in both sectors. This study identified actor profiles and value chain dynamics in both sectors using structural mapping. Market performance was assessed through costs, margins, price spread, and marketing efficiency, with differentiation strategies proposed for sectoral growth. Data collection involved interviewer-administered questionnaires and in-depth interviews with 748 fishers, 44 collectors, and 12 exporters from December 2022 to March 2024. Results highlighted that the lobster value chain was highly export-driven, with a concentration on live trade and premium pricing. Fishers and collectors faced risks from fluctuating stocks and strict regulations, while exporters dealt with logistical and market volatility. Upstream actors often overexploit resources to increase yields, rather than improve quality, leading to unsustainable practices. To mitigate market challenges, actions like promoting products under branding tags such as ‘wild-caught lobster’ and ‘conventionally cultured GFP’, maintaining food safety and quality standards and optimizing logistics are essential for enhancing competitiveness. The GFP sector operates in both domestic and export markets, competing with commodity shrimp. While it provides employment, its financial performance is moderate, limited by high farming costs and pricing competitiveness. Differentiation efforts should focus on sustainable labeling, value-added products, direct exports, and catering to niche markets to boost profitability and reduce dependence on bulk markets.Las pesquerías de langosta silvestre y langostino gigante de agua dulce (GFP) de cultivo en Sri Lanka abastecen a mercados de alta gama con exportaciones significativas. Sin embargo, existe una notable brecha en la literatura sobre el análisis de la cadena de valor y los aspectos del desempeño del mercado en ambos sectores. Este estudio identificó los perfiles de los actores y la dinámica de la cadena de valor en ambos sectores mediante un mapeo estructural. El desempeño del mercado se evaluó a través de costos, márgenes, diferencial de precios y eficiencia de comercialización, y se propusieron estrategias de diferenciación para el crecimiento sectorial. La recopilación de datos incluyó cuestionarios administrados por entrevistadores y entrevistas en profundidad con 748 pescadores, 44 recolectores y 12 exportadores, entre diciembre de 2022 y marzo de 2024. Los resultados destacaron que la cadena de valor de la langosta estaba altamente orientada a la exportación, concentrándose en el comercio de ejemplares vivos y precios prémium. Los pescadores y recolectores se enfrentaban a los riesgos derivados de la fluctuación de las poblaciones y las estrictas regulaciones, mientras que los exportadores lidiaban con la volatilidad logística y del mercado. Los actores aguas arriba a menudo sobreexplotan los recursos para aumentar la producción, en lugar de mejorar la calidad, lo que conduce a prácticas insostenibles. Para mitigar los desafíos del mercado, acciones como la promoción de productos con etiquetas como “langosta silvestre” y “GFP de cultivo convencional”, el mantenimiento de los estándares de inocuidad y calidad alimentaria y la optimización logística son esenciales para mejorar la competitividad. El sector de GFP opera tanto en el mercado nacional como en el de exportación, compitiendo con el camarón comercial. Si bien genera empleo, su rendimiento financiero es moderado, limitado por los altos costos de cultivo y la competitividad de precios. Los esfuerzos de diferenciación deben centrarse en el etiquetado sostenible, los productos con valor añadido, la exportación directa y la atención a nichos de mercado para impulsar la rentabilidad y reducir la dependencia de los mercados a granel.
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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