1,720,954 research outputs found
Incidencia de la infraestructura vial sobre el crecimiento económico de las regiones que integran la macrorregión sur del Perú, periodo 2010 - 2022
No full textLa investigación tiene como objetivo determinar la incidencia de la infraestructura vial sobre el crecimiento económico de las regiones que integran la Macrorregión sur del Perú, periodo 2010 – 2022, cuya metodología aplicada se fundamenta en un enfoque cuantitativo, con un diseño de investigación no experimental - longitudinal, de tipo causal. Conforme a la metodología econométrica aplicada, los resultados derivados de los test estadísticos respaldan la selección del modelo de datos de panel con efectos fijos como la elección más apropiada. Concretamente el análisis de regresión de Prais-Winsten revela relaciones cuantitativas significativas entre las variables independientes y el Producto Bruto Interno en las regiones de la Macrorregión Sur del Perú. Se destaca que, un incremento del 1% en la longitud de la red vial nacional pavimentada se asocia con un aumento de 0.9484% en el Producto Bruto Interno de las regiones. Análogamente se evidencia que un aumento del 1% en el gasto público en vías departamentales y vecinales conlleva a un incremento del 0.1178% y 0.1885% en el Producto Bruto Interno respectivamente. En cuanto a las variables de control del estudio, se verifica que un aumento de 1 punto porcentual en el nivel educativo se asocia con un incremento del 0.0125% en el Producto y finalmente se valida que la informalidad laboral tiene un impacto adverso en el crecimiento económico, concretamente, un incremento de 1 punto porcentual en la tasa de empleo informal se asocia con una reducción del 0.0414% en el Producto Bruto Interno
Infraestructuras básicas y seguridad alimentaria: Evidencia para economías en transición
Get PDFTreballs Finals del Màster Universitari d'Economia, Regulació i Competència als Serveis Públics (ERCSP), Facultat d'Economia i Empresa, Universitat de Barcelona, Curs: 2023-2024. Tutor: Dr. Xavier FagedaEsta investigación contribuye a la literatura existente al evaluar el efecto de las infraestructuras básicas sobre dos dimensiones opuestas de la seguridad alimentaria: el suministro de energía alimentaria y la prevalencia de subalimentación. El estudio analiza un panel de 30 países de renta baja y renta media baja, evaluados del 2010 al 2023. Utilizando una estimación de efectos fijos encontramos que la mejora de la seguridad alimentaria en países en transición depende en gran medida de la expansión y calidad de las infraestructuras básicas como agua, energía y transportes. Como análisis complementario, aplicamos un modelo DiD escalonado (CS) para estimar el impacto causal de la adhesión a los ODS sobre la seguridad alimentaria. Los resultados revelan efectos significativos: los ODS logran un aumento del 7.5% en el suministro de energía alimentaria y una reducción del 10.8% en la prevalencia de subalimentación en contraste con el escenario contrafactual sin adhesión. Lo que refuerza el papel de los ODS como herramienta de política pública en la reducción del hambre
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
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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