1,720,957 research outputs found
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
Simplified equation for the estimation of the approximate fundamental period of vibration for buildings with combined seismic resistance systems
Get PDFEn este trabajo investigativo se evaluó el periodo natural de vibración de una muestra significativa comprendida de 15 edificios construidos en la ciudad de Bucaramanga, con sistemas de resistencia sísmica combinado. Motivado por la ausencia de una ecuación simplificada para la estimación del periodo de vibración en estructuras con este tipo de resistencia sísmica en el Reglamento Colombiano de Construcción Sismo Resistente (NSR-10). Se determinó el periodo natural de vibración de la muestra significativa por medio de tres métodos; el primero fue experimental (prueba de vibración ambiental), el segundo analítico donde se desarrollaron los modelamientos numéricos de cada una de las edificaciones y el ultimo el teórico, donde se calculó el periodo de vibración por medio ecuaciones simplificadas dados en cuatro códigos sísmicos internacionales seleccionados. A partir de esta metodología se obtuvieron resultados experimentales y analíticos que conllevaron a proponer una ecuación simplificada para la estimación del periodo fundamental vibración aproximado para las edificaciones con sistemas de resistencia sísmica combinado.Contenido
DEDICATORIA III
AGRADECIMIENTOS IV
LISTA DE TABLAS IV
LISTA DE FIGURAS IV
LISTA DE GRAFICAS V
LISTA DE ABREVIATURAS VI
RESUMEN VII
ABSTRACT VIII
CAPÍTULO 1. INTRODUCCIÓN 1
1.1 Planteamiento del problema 2
1.2 Justificación 2
1.3 Objetivos 3
1.3.1 Objetivo General 3
1.3.2 Objetivos Específicos 3
CAPÍTULO 2. ANTECEDENTES Y ESTADO DEL ARTE 5
2.1 Antecedentes del proyecto 5
2.2 Marco conceptual 6
2.3 Sistema combinado de resistencia sísmica 6
2.4 Marco legal 7
2.4.1 Constitución Política de Colombia 7
2.4.2 Reglamento Colombiano de Construcción Sismo Resistente NSR-10 8
2.5 Estado del arte 8
CAPÍTULO 3. MARCO TEÓRICO 16
3.1 Método de análisis: 16
3.2 Ecuaciones propuestas en Reglamentos Internacionales 18
3.2.1 Ecuaciones propuestas NSR-10: 18
3.2.2 Ecuación Reglamento de Construcción de México (SMIE): 19
3.2.3 Reglamento American Society of Civil Engineers (ASCE 7-10): 20
3.2.4 Norma Chilena Oficial -Diseño Sísmico (NCh 433.0f1996): 20
CAPÍTULO 4. METODOLOGÍA 22
4.1 Selección y Determinación de las Edificaciones: 22
4.2 Prueba de Vibración Ambiental: 28
4.3 Modelamiento Numérico: 33
4.4 Análisis Teórico: 33
CAPÍTULO 5. RESULTADOS 34
5.1 Análisis Experimental 34
5.2 Análisis Analítico 34
5.3 Análisis Teórico 35
5.3.1 Reglamento Colombiano de Construcción Sismo Resistente (NSR-10) 35
5.3.2 Reglamento de Construcción de México (SMIE) 36
5.3.3 Reglamento American Society of Civil Engineers (ASCE 7-10) 37
5.3.4 Norma Chilena Oficial -Diseño Sísmico (NCh 433.0f1996) 38
5.4 Comparación de Resultados 39
5.5 Propuesta de Ecuación para el periodo natural de vibración 43
CAPÍTULO 6. CONCLUSIONES Y RECOMENDACIONES 46
BIBLIOGRAFÍA 48
ANEXOS 50In this research paper, it will be evaluated the natural period of vibration of a significant sample comprised of 15 buildings built in the city of Bucaramanga, with systems of combined seismic resistance, motivated by the absence of a simplified equation for the vibration period estimation in structures with this type of seismic resistance in the Colombian Regulations for Earthquake Resistant Construction (NSR-10). The period will be determined Natural vibration of the significant sample by means of three methods; the first method is experimental (environmental vibration test), the second one is analytical in which the numerical modeling of each of the buildings are developed, and the last one is theoretical that is calculated the period of vibration by means of simplified equations given in four seismic codes internationals selected. From this methodology, it is expected to obtain results experimental and analytical that lead to propose a simplified equation for estimation of the fundamental period approximate vibration for buildings with resistance systems combined seismic.Maestrí
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
Simplified equation for the estimation of the approximate fundamental period of vibration for buildings with combined seismic resistance systems
No full textEn este trabajo investigativo se evaluó el periodo natural de vibración de una muestra significativa comprendida de 15 edificios construidos en la ciudad de Bucaramanga, con sistemas de resistencia sísmica combinado. Motivado por la ausencia de una ecuación simplificada para la estimación del periodo de vibración en estructuras con este tipo de resistencia sísmica en el Reglamento Colombiano de Construcción Sismo Resistente (NSR-10). Se determinó el periodo natural de vibración de la muestra significativa por medio de tres métodos; el primero fue experimental (prueba de vibración ambiental), el segundo analítico donde se desarrollaron los modelamientos numéricos de cada una de las edificaciones y el ultimo el teórico, donde se calculó el periodo de vibración por medio ecuaciones simplificadas dados en cuatro códigos sísmicos internacionales seleccionados. A partir de esta metodología se obtuvieron resultados experimentales y analíticos que conllevaron a proponer una ecuación simplificada para la estimación del periodo fundamental vibración aproximado para las edificaciones con sistemas de resistencia sísmica combinado.In this research paper, it will be evaluated the natural period of vibration of a significant sample comprised of 15 buildings built in the city of Bucaramanga, with systems of combined seismic resistance, motivated by the absence of a simplified equation for the vibration period estimation in structures with this type of seismic resistance in the Colombian Regulations for Earthquake Resistant Construction (NSR-10). The period will be determined Natural vibration of the significant sample by means of three methods; the first method is experimental (environmental vibration test), the second one is analytical in which the numerical modeling of each of the buildings are developed, and the last one is theoretical that is calculated the period of vibration by means of simplified equations given in four seismic codes internationals selected. From this methodology, it is expected to obtain results experimental and analytical that lead to propose a simplified equation for estimation of the fundamental period approximate vibration for buildings with resistance systems combined seismic.Contenido
DEDICATORIA III
AGRADECIMIENTOS IV
LISTA DE TABLAS IV
LISTA DE FIGURAS IV
LISTA DE GRAFICAS V
LISTA DE ABREVIATURAS VI
RESUMEN VII
ABSTRACT VIII
CAPÍTULO 1. INTRODUCCIÓN 1
1.1 Planteamiento del problema 2
1.2 Justificación 2
1.3 Objetivos 3
1.3.1 Objetivo General 3
1.3.2 Objetivos Específicos 3
CAPÍTULO 2. ANTECEDENTES Y ESTADO DEL ARTE 5
2.1 Antecedentes del proyecto 5
2.2 Marco conceptual 6
2.3 Sistema combinado de resistencia sísmica 6
2.4 Marco legal 7
2.4.1 Constitución Política de Colombia 7
2.4.2 Reglamento Colombiano de Construcción Sismo Resistente NSR-10 8
2.5 Estado del arte 8
CAPÍTULO 3. MARCO TEÓRICO 16
3.1 Método de análisis: 16
3.2 Ecuaciones propuestas en Reglamentos Internacionales 18
3.2.1 Ecuaciones propuestas NSR-10: 18
3.2.2 Ecuación Reglamento de Construcción de México (SMIE): 19
3.2.3 Reglamento American Society of Civil Engineers (ASCE 7-10): 20
3.2.4 Norma Chilena Oficial -Diseño Sísmico (NCh 433.0f1996): 20
CAPÍTULO 4. METODOLOGÍA 22
4.1 Selección y Determinación de las Edificaciones: 22
4.2 Prueba de Vibración Ambiental: 28
4.3 Modelamiento Numérico: 33
4.4 Análisis Teórico: 33
CAPÍTULO 5. RESULTADOS 34
5.1 Análisis Experimental 34
5.2 Análisis Analítico 34
5.3 Análisis Teórico 35
5.3.1 Reglamento Colombiano de Construcción Sismo Resistente (NSR-10) 35
5.3.2 Reglamento de Construcción de México (SMIE) 36
5.3.3 Reglamento American Society of Civil Engineers (ASCE 7-10) 37
5.3.4 Norma Chilena Oficial -Diseño Sísmico (NCh 433.0f1996) 38
5.4 Comparación de Resultados 39
5.5 Propuesta de Ecuación para el periodo natural de vibración 43
CAPÍTULO 6. CONCLUSIONES Y RECOMENDACIONES 46
BIBLIOGRAFÍA 48
ANEXOS 50Maestrí
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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