• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 32
  • 14
  • 12
  • 2
  • 2
  • 1
  • 1
  • Tagged with
  • 65
  • 65
  • 25
  • 24
  • 21
  • 17
  • 17
  • 16
  • 15
  • 14
  • 11
  • 10
  • 9
  • 8
  • 8
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Unbundling a Big Deal: Comparing Three Data Sources to Come to Decisions

Dawson, Diane January 2014 (has links)
Academic libraries in Canada acquire many “big deal” journal packages through a national consortium, the Canadian Research Knowledge Network (CRKN). Recently, negotiations with the American Chemical Society (ACS) broke down and it appeared that member libraries would need to negotiate with ACS individually for the Web Editions bundle of 40+ titles. It soon became clear that the University Library, University of Saskatchewan would likely no longer be able to afford the entire package, and tough decisions would need to be made. Usage data on each title were readily available – but is that enough evidence? Working under the common assumption that the primary users of this package are the Chemistry Department researchers, a citation analysis was conducted on what ACS journals these users recently published in and cited in their articles. The Chemistry Department was kept informed of developments in the ACS/CRKN situation, and expressed interest and concern in the outcome. In an effort to continue to engage chemistry researchers and offer them a voice in the process, a survey of their opinions on each ACS title was also conducted. It was hoped that combining data from these three discrete sources: usage statistics, citation analyses, and user feedback, would enable us to arrive at the most conscientious, evidence-based decisions possible. This presentation will discuss the outcome of this thorough analysis and consider the benefits and challenges of this comprehensive methodology and whether it is practical in every situation. / Slides from "Featured Paper" presentation to STS Research Forum, American Library Association Annual Conference, Las Vegas, June 2014
2

Mapping the field of virtual work: a co-citation analysis

Raghuram, Sumita, Türtscher, Philipp, Garud, Raghu January 2010 (has links) (PDF)
Interest in the area of virtual work continues to increase with articles being written from different disciplinary perspectives - e.g. information systems (IS), management, psychology and transportation. In this paper, we map research on virtual work to (a) understand the intellectual base from which this field has emerged, (b) explore how this field has evolved over time, and (c) identify clusters of research themes that have emerged over time and the relationships between them. Specifically, we use co-citation analysis of research published in all social science disciplines to map the field at three points in time - 1995, 2000 and 2006. Our results show that the field has grown from nine research clusters in 1995 to sixteen in 2006. A comparison across these maps suggests that research in the cluster of "virtual teams" has gained significance even as research within some earlier clusters such as "urban planning and transportation" has lost ground. Our longitudinal analysis identifies relevant concepts, theories and methodologies that have emerged in the field of virtual work. This analysis can help interested researchers identify how they may want to contribute to the field of virtual work - by adding to popular clusters, enriching emerging smaller clusters or by acting as bridges across clusters. (author's abstract)
3

Discussão epistemológica da produção científica brasileira em biodiesel / Epistemological discussion of the Brazilian scientific production on biodiesel

Vianna, Fernanda Cristina 05 April 2013 (has links)
Etimologicamente, epistemologia significa discurso (logos) sobre a ciência e, em um sentido amplo, pode ser conceituada como o estudo metódico e reflexivo da ciência, de sua organização, de sua formação, do seu funcionamento e produtos intelectuais. Em função do evidente crescimento da produção científica brasileira em torno do biodiesel, verifica-se a necessidade de um estudo de natureza epistemológica desta produção, pois é uma maneira de se observar e avaliar a qualidade do que está sendo produzido. O presente trabalho propõe uma discussão de natureza epistemológica sobre artigos de autoria brasileira, relacionados ao assunto biodiesel, publicados em periódicos internacionais no período de janeiro de 2000 a junho de 2011. Com este trabalho, do tipo exploratório-descritivo, foi possível reconhecer e identificar o que está sendo pesquisado a respeito do biodiesel no Brasil e quais as tendências temáticas e metodológicas que estão sendo usadas, além de determinar como vem se desenvolvendo o conhecimento ao longo dos anos constituintes do intervalo de tempo considerado. Para realização desta pesquisa, optou-se por uma abordagem do tipo teórico-empírica e, a pesquisa documental seguida de uma análise crítica, como estratégias de pesquisa. Os resultados mostram que é significativa a quantidade de artigos produzidos por pelo menos um autor filiado ao Brasil, especialmente a partir do ano 2008, quando se deu a obrigatoriedade do uso do biocombustível no país. No entanto, é patente a escolha, de certo modo recorrente, de um padrão de pesquisa durante a condução destes trabalhos, tanto na seleção dos temas e formulação das propostas, como também na opção pelas abordagens metodológicas utilizadas. Foram encontrados muitos estudos com propostas e estruturas semelhantes. A maior parte dos artigos amostrados é do tipo empírico-positivista e faz uso do delineamento experimental para tratar de métodos, técnicas e processos químicos para produção do biodiesel. Pode-se dizer que, de uma maneira geral, tais estudos exercem sua contribuição para o desenvolvimento científico, mas ainda há muito para ser pesquisado. Para uma evolução da produção científica a respeito do biodiesel, é necessário que se procure inovar nas escolhas das estratégias e abordagens metodológicas utilizadas, bem como despender maior cuidado na formulação dos problemas e objetivos das pesquisas. A qualidade dos estudos pode e deve ser aprimorada, especialmente se a intenção implica aproveitar os resultados dessas pesquisas para que se consiga solucionar os problemas ainda vigentes, relacionados à consolidação do uso do biocombustível no país. / Etymologically, epistemology means speech (logos) of the Science and, in a wide sense, may be conceived as the methodic and reflexive study of science, its organization, its formation, its functioning and intellectual products. Owing to the clear growth of the Brazilian scientific production about biodiesel, it is noticed the necessity of an epistemological study of this production since it is a way to observe and evaluate the quality of what is being produced. This paper proposes an epistemological discussion about Brazilian authorship articles related to biodiesel published on international journals from January 2000 to June 2011. With this exploratory-descriptive paper, it has been possible to recognize and identify what is being researched about biodiesel in Brazil and what thematic and methodological trends are being used, besides to determine how knowledge has been developing along the constituent years of the considered time interval. In order to carry out this research the option has been for a theoretical empirical approach and the inquiry followed by a critical analysis as research strategies. The results show that it is significant the number of articles produced by at least one author associated with Brazil, particularly from 2008 on when the use of biofuel became mandatory in the country. However, it is evident the choice, some way recurrent, of a research pattern during the leading of these works, not only concerning the selection of the themes and formulation of the proposals, but also on the options for the methodological approaches used. Many studies have been found with similar proposals and structures. Most part of the sampled articles are of empirical positivist type and it uses the experimental delineation to deal with the methods, techniques and chemical processes for the biodiesel production. It may be said that altogether, such studies contribute to the scientific development but there is still much to be researched. In order to reach an evolution of the scientific production of the biodiesel, it is necessary to innovate in choices of the strategies and methodological approaches used as well as to take greater care on the formulation of the matters and targets of the researches. The quality of the studies may and should be perfected, especially if the intention implies to improve the results of these researches to solve the current matters related to the consolidation of the use of biofuel in the country.
4

Discussão epistemológica da produção científica brasileira em biodiesel / Epistemological discussion of the Brazilian scientific production on biodiesel

Fernanda Cristina Vianna 05 April 2013 (has links)
Etimologicamente, epistemologia significa discurso (logos) sobre a ciência e, em um sentido amplo, pode ser conceituada como o estudo metódico e reflexivo da ciência, de sua organização, de sua formação, do seu funcionamento e produtos intelectuais. Em função do evidente crescimento da produção científica brasileira em torno do biodiesel, verifica-se a necessidade de um estudo de natureza epistemológica desta produção, pois é uma maneira de se observar e avaliar a qualidade do que está sendo produzido. O presente trabalho propõe uma discussão de natureza epistemológica sobre artigos de autoria brasileira, relacionados ao assunto biodiesel, publicados em periódicos internacionais no período de janeiro de 2000 a junho de 2011. Com este trabalho, do tipo exploratório-descritivo, foi possível reconhecer e identificar o que está sendo pesquisado a respeito do biodiesel no Brasil e quais as tendências temáticas e metodológicas que estão sendo usadas, além de determinar como vem se desenvolvendo o conhecimento ao longo dos anos constituintes do intervalo de tempo considerado. Para realização desta pesquisa, optou-se por uma abordagem do tipo teórico-empírica e, a pesquisa documental seguida de uma análise crítica, como estratégias de pesquisa. Os resultados mostram que é significativa a quantidade de artigos produzidos por pelo menos um autor filiado ao Brasil, especialmente a partir do ano 2008, quando se deu a obrigatoriedade do uso do biocombustível no país. No entanto, é patente a escolha, de certo modo recorrente, de um padrão de pesquisa durante a condução destes trabalhos, tanto na seleção dos temas e formulação das propostas, como também na opção pelas abordagens metodológicas utilizadas. Foram encontrados muitos estudos com propostas e estruturas semelhantes. A maior parte dos artigos amostrados é do tipo empírico-positivista e faz uso do delineamento experimental para tratar de métodos, técnicas e processos químicos para produção do biodiesel. Pode-se dizer que, de uma maneira geral, tais estudos exercem sua contribuição para o desenvolvimento científico, mas ainda há muito para ser pesquisado. Para uma evolução da produção científica a respeito do biodiesel, é necessário que se procure inovar nas escolhas das estratégias e abordagens metodológicas utilizadas, bem como despender maior cuidado na formulação dos problemas e objetivos das pesquisas. A qualidade dos estudos pode e deve ser aprimorada, especialmente se a intenção implica aproveitar os resultados dessas pesquisas para que se consiga solucionar os problemas ainda vigentes, relacionados à consolidação do uso do biocombustível no país. / Etymologically, epistemology means speech (logos) of the Science and, in a wide sense, may be conceived as the methodic and reflexive study of science, its organization, its formation, its functioning and intellectual products. Owing to the clear growth of the Brazilian scientific production about biodiesel, it is noticed the necessity of an epistemological study of this production since it is a way to observe and evaluate the quality of what is being produced. This paper proposes an epistemological discussion about Brazilian authorship articles related to biodiesel published on international journals from January 2000 to June 2011. With this exploratory-descriptive paper, it has been possible to recognize and identify what is being researched about biodiesel in Brazil and what thematic and methodological trends are being used, besides to determine how knowledge has been developing along the constituent years of the considered time interval. In order to carry out this research the option has been for a theoretical empirical approach and the inquiry followed by a critical analysis as research strategies. The results show that it is significant the number of articles produced by at least one author associated with Brazil, particularly from 2008 on when the use of biofuel became mandatory in the country. However, it is evident the choice, some way recurrent, of a research pattern during the leading of these works, not only concerning the selection of the themes and formulation of the proposals, but also on the options for the methodological approaches used. Many studies have been found with similar proposals and structures. Most part of the sampled articles are of empirical positivist type and it uses the experimental delineation to deal with the methods, techniques and chemical processes for the biodiesel production. It may be said that altogether, such studies contribute to the scientific development but there is still much to be researched. In order to reach an evolution of the scientific production of the biodiesel, it is necessary to innovate in choices of the strategies and methodological approaches used as well as to take greater care on the formulation of the matters and targets of the researches. The quality of the studies may and should be perfected, especially if the intention implies to improve the results of these researches to solve the current matters related to the consolidation of the use of biofuel in the country.
5

Supply chain cost research: a bibliometric mapping perspective

Ramos, Edgar, Dien, Steven, Gonzales, Abel, Chavez, Melissa, Hazen, Ben 01 January 2020 (has links)
El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado. / Purpose: The purpose of this paper is to review the literature on logistics and supply chain costs to provide an analysis of sources of publication, citations and authorship using bibliometric analysis techniques (VOSviewer and CitNetExplorer tools). Design/methodology/approach: A review of 756 articles published during the period 2014 to 2019 referenced in the Scopus database was performed. The review was limited to articles published in English and directly related to logistics and supply chain costs. Findings: The research identified more than 2,000 authors representing more than 5,000 keywords and 10,000 references from a total of 155 journals investigated. A critical synthesis of the resulting data revealed several insights about various aspects of studies in this field. For instance, the review identified a scarcity of academic publications in three key areas, namely “supply chain,” “optimization” and “transportation”, which are concepts focused on the total supply chain. Originality/value: This research highlights important areas of attention for both researchers and practitioners considering costs associated with logistics and supply chain operations and strategies. The results can also help identify thematic areas, journals and topics for future research. The paper identifies and proposes research areas to contribute to the literature when challenges to investigating logistics and supply chain costs are discussed.
6

Revisión bibliométrica de artículos científicos sobre niños diagnosticados con TDAH de la base de datos Redalyc en el periodo de publicación 2010 – 2019 / Bibliometric review of scientific articles on children diagnosed with ADHD from the Redalyc database in the period of publication 2010 – 2019

Corcuera Bustamante, Santiago Andrés, Garay Palomino, Ana Sofía, Gutierrez Damas, Luz María, Saroli Araníbar, Daniela 25 August 2020 (has links)
El presente estudio tuvo por objetivo realizar un estudio bibliométrico sobre los artículos científicos de Psicología sobre niños diagnosticados con TDAH, recogidos de la base de dato Redalyc - Revistas de Latinoamérica. Para ello, se realizó una búsqueda de la variable de interés encontrando 24 estudios, de los cuales finalmente, quedaron 4 seleccionados por los criterios de inclusión. Por medio del análisis de los datos, se encontró que la mayoría de estudios no contaba con doi, orcid, hipótesis, ni recomendaciones. Asimismo, los estudios se caracterizaron por usar instrumentos de medición mixtos (cuestionarios y entrevistas). Se concluye que existe una gran necesidad en continuar investigando las alteraciones y dificultades concomitantes que manifiestan los niños diagnosticados con TDAH, debido al impacto que tiene sobre su adaptación social, escolar y familiar. / The objective of the present investigation was to perform a bibliometric study on the scientific articles of Psychology on children diagnosed with ADHD, collected from the Redalyc - Latin American Magazines database. For this, it has been made a search for the variable of interest, finding 24 studies, of which, finally, 4 were selected by the inclusion criteria. Through data analysis, it was found that most studies did not have doi, orcid, hypotheses, or recommendations. Likewise, the studies were characterized by using mixed measurement instruments (questionnaires and interviews). It is concluded that there is a great need to continue investigating the concomitant alterations and difficulties manifested by children diagnosed with ADHD, due to the impact it has on their social, school and family adaptation. / Trabajo de investigación
7

Estudio Bibliométrico de Artículos Científicos sobre el Teletrabajo en personal de empresas recogidos de la base de datos Redalyc.org en el periodo de publicación 2005-2020 / Bibliometric Study of Scientific Articles on Telework in company personnel collected from the Redalyc.org database in the period of publication 2005-2020

De La Cruz Yonguri, Smith Gregory, Diaz Yataco, Nicole, Paredes Carrasco, Dayanna Nicol, Villegas Mendoza, Jhara Gilary, Zamorano Pinedo, Camila Ingrid 29 August 2020 (has links)
El objetivo del estudio fue realizar un análisis bibliométrico de las publicaciones científicas de la base de datos Redalyc.org, para establecer información actual sobre los artículos científicos del teletrabajo en colaboradores de empresas. Primero, se realizó una búsqueda de la variable teletrabajo en la base de datos Redalyc.org, encontrándose un total de 9 artículos, de los cuales 1 artículo fue relacionado al teletrabajo en colaboradores de una empresa, el cual conforma la muestra de estudio. Seguidamente, se realizaron los análisis de datos y metodología utilizadas, y se desarrolló un análisis de la información obtenida. En los resultados resalta la poca cantidad de estudios cuantitativos, el cien por ciento de trabajos contienen resumen, abstract, palabras claves, introducción, objetivos e hipótesis. Se llega a la conclusión de que la bibliometría es una herramienta efectiva y fácil de utilizar para la medición del ejercicio de un investigador, este hecho fomenta que sea tangible la información de estudios previos, esto permite contribuir con información actual al panorama organizacional en el Perú. / The objective of the study was to carry out a bibliometric analysis of the scientific publications of the Redalyc.org database, to establish current information on the scientific articles on telework in company collaborators. First, a search for the telework variable was performed in the Redalyc.org database, finding a total of 9 articles, of which 1 article related to telework in collaborators of a company, which makes up the study sample. Subsequently, the data analysis and methodology used were performed, and an analysis of the information obtained was carried out. The results highlight the small number of quantitative studies, one hundred percent of works contain abstract, abstract, keywords, introduction, objectives and hypotheses. It is concluded that bibliometrics is an effective and easy-to-use tool for measuring the exercise of a researcher, this fact encourages the information from previous studies to be tangible, this allows contributing current information to the organizational landscape in Peru. / Trabajo de investigación
8

Return on investment in social media marketing: bibliometric analysis

Ismagilova, Elvira, Dwivedi, Y.K., Lal, Banita, Rana, Nripendra P., Doneddu, D. 04 May 2022 (has links)
Yes / Return on investment (ROI) from social media marketing activities has attracted significant attention from academics and practitioners resulting in an increasing number of studies on this important topic. The current study conducted a bibliometric analysis to provide a consolidated view on the topic of ROI in social media marketing. By using 115 outputs from the Web of Science database and employing software CiteSpace the study presents and discusses the analysis of temporal distribution, cited countries, cited journals, cited authors, and research hotspots from 2009 till 2020. A holistic picture of this topic will help researchers to get an overview of this field and develop directions for future studies.
9

Análise de componentes principais em data warehouses / Principal components analysis in data warehouses

Rossi, Rafael Germano 07 November 2017 (has links)
A técnica de Análise de Componentes Principais (PCA) tem como objetivo principal a descrição da variância e covariância entre um conjunto de variáveis. Essa técnica é utilizada para mitigar redundâncias no conjunto de variáveis e para redução de dimensionalidade em várias aplicações nas áreas científica, tecnológica e administrativa. Por outro lado, o modelo de dados multidimensionais é composto por relações de fato e dimensões (tabelas) que descrevem um evento usando métricas e a relação entre suas dimensões. No entanto, o volume de dados armazenados e a complexidade de suas dimensões geralmente envolvidas neste modelo, especialmente no ambiente de data warehouse, tornam a tarefa de interpretar a correlação entre dimensões muito difícil e às vezes impraticável. Neste trabalho, propomos o desenvolvimento de uma Interface de Programação de Aplicação (API) para a aplicação da PCA no modelo de dados multidimensionais para facilitar a tarefa de caracterização e redução de dimensionalidade, integrando essa técnica com ambientes de Data Warehouses. Para verificar a eficácia desta API, um estudo de caso foi realizado utilizando dados de produção científica e suas citações obtidas das Plataformas Lattes, Web of Science, Google Scholar e Scopus, fornecidas pela Superintendência de Tecnologia da Informação da Universidade de São Paulo. / The Principal Component Analysis (PCA) technique has as the main goal the description of the variance and covariance between a set of variables. This technique is used to mitigate redundancies in the set of variables and as a mean of achieving dimensional reduction in various applications in the scientific, technological and administrative areas. On the other hand, the multidimensional data model is composed by fact and dimension relations (tables) that describe an event using metrics and the relationship between their dimensions. However, the volume of data stored and the complexity of their dimensions usually involved in this model, specially in data warehouse environment, makes the correlation analyses between dimensions very difficult and sometimes impracticable. In this work, we propose the development of an Application Programming Interface (API) for the application of PCA on multidimensional data model in order to facilitate the characterization task and dimension reduction, integrating the technique with Data Warehouses environments. For verifying the effectiveness of this API, a case study was carried out using the scientific production data obtained from the Lattes Platform, the Web of Science, Google Scholar and Scopus, provided by the IT Superintendence at University of São Paulo.
10

Análise de componentes principais em data warehouses / Principal components analysis in data warehouses

Rafael Germano Rossi 07 November 2017 (has links)
A técnica de Análise de Componentes Principais (PCA) tem como objetivo principal a descrição da variância e covariância entre um conjunto de variáveis. Essa técnica é utilizada para mitigar redundâncias no conjunto de variáveis e para redução de dimensionalidade em várias aplicações nas áreas científica, tecnológica e administrativa. Por outro lado, o modelo de dados multidimensionais é composto por relações de fato e dimensões (tabelas) que descrevem um evento usando métricas e a relação entre suas dimensões. No entanto, o volume de dados armazenados e a complexidade de suas dimensões geralmente envolvidas neste modelo, especialmente no ambiente de data warehouse, tornam a tarefa de interpretar a correlação entre dimensões muito difícil e às vezes impraticável. Neste trabalho, propomos o desenvolvimento de uma Interface de Programação de Aplicação (API) para a aplicação da PCA no modelo de dados multidimensionais para facilitar a tarefa de caracterização e redução de dimensionalidade, integrando essa técnica com ambientes de Data Warehouses. Para verificar a eficácia desta API, um estudo de caso foi realizado utilizando dados de produção científica e suas citações obtidas das Plataformas Lattes, Web of Science, Google Scholar e Scopus, fornecidas pela Superintendência de Tecnologia da Informação da Universidade de São Paulo. / The Principal Component Analysis (PCA) technique has as the main goal the description of the variance and covariance between a set of variables. This technique is used to mitigate redundancies in the set of variables and as a mean of achieving dimensional reduction in various applications in the scientific, technological and administrative areas. On the other hand, the multidimensional data model is composed by fact and dimension relations (tables) that describe an event using metrics and the relationship between their dimensions. However, the volume of data stored and the complexity of their dimensions usually involved in this model, specially in data warehouse environment, makes the correlation analyses between dimensions very difficult and sometimes impracticable. In this work, we propose the development of an Application Programming Interface (API) for the application of PCA on multidimensional data model in order to facilitate the characterization task and dimension reduction, integrating the technique with Data Warehouses environments. For verifying the effectiveness of this API, a case study was carried out using the scientific production data obtained from the Lattes Platform, the Web of Science, Google Scholar and Scopus, provided by the IT Superintendence at University of São Paulo.

Page generated in 0.0747 seconds