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Search Results: 1 - 10 of 3354 matches for " metric indicators "
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Nuevos indicadores métricos para la evaluación de las publicaciones seriadas científicas y académicas
Ca?edo Andalia,Rubén; Cruz Font,Jaime;
ACIMED , 2012,
Abstract: the recent emergence of novel indicators as the eigen factor, the scimago journal rank and the source normalized impact per paper have increased interest in metric evaluation of scientific and academic journals. as a rule, they intend to reduce the limitations mentioned repeatedly to the classical impact factor and introduce new perspectives for evaluating the use of serials. however, they are also more complex from a conceptual and mathematical perspective. for this reason, before its final introduction into practice, it requires to understand its real meaning, purpose, relationships, strengths and limitations, that means characterize individually and collectively studied indicators and identify their advantages over the impact factor and its limitations in general.
Producción científica mundial sobre biodiesel
Collymore Rodríguez,Andrea; Arencibia Jorge,Ricardo; Blanco García,Armando; Araújo Ruiz,Juan A.;
ACIMED , 2008,
Abstract: the current paper is a bibliometric study of the world scientific production on biodiesel compiled in the web of science, in order to identify the most productive authors, countries, institutions and journals; as well as the languages of the articles, documental typology, isi subject categories, and keywords presented in the registries. it was obtained a total of 1022 articles, signed by 1857 authors. the co-authorship index was 3.04. the papers were published in 232 journals. a total of 565 institutions from 56 countries were identified. an exponential growth of the scientific production during the last 15 years was observed.
Análisis métrico de la revista MEDISAN en el período 2004-2007
Cardona Sánchez,Omara Mercedes; de la Torre Vega,Gertrudis; Casta?eda Amondaray,Tatiana; Ca?edo Andalia,Rubén;
ACIMED , 2009,
Abstract: the scientific production published by medisan electronic journal from santiago de cuba in the period 2004-2007 was studied aiming to characterize that production as well as the bibliographical references used for the production. the documental typology was observed and the most frequent themes of investigation. the price index for the articles was determined and the productivity of the authors. the universe was constituted by 179 articles of the cuatrienium studied and its 2 503 bibliographical references. in all the years studied, the price index obtained values less than 0.5, and this reveals the lack of actualization in the references used to elaborate the papers in the period being analyzed. a predominance of scientific articles was observed. obstetrics and gynaecology, ophthalmology and dentistry were the specialities most treated. the majority of the authors have only one article in the studied sample.
Indicadores basados en análisis de citas para la caracterización de las neurociencias cubanas
Dorta Contreras,Alberto Juan; Arencibia Jorge,Ricardo; Lahera,Yohannis Martí; Araújo Ruiz,Juan A;
ACIMED , 2008,
Abstract: neurosciences are one of the most visible research fronts in the scientific production of cuba. as research area they are characterized by high degree of collaboration among there specialists, citation and multidisciplinarity. the production and use statistics from high productive cuban scientists in this sector were analyzed. the systematic study of cuban neuroscientists activity through indicators based on citation analysis, the main objective of the current work, will show in the future the characteristics of its documental production with a more levels of detail, at the same time that it will become an essential tool for a better evaluation of its performances and scientific efficiency.
Indicadores bibliométricos em ciência da informa??o: análise dos pesquisadores mais produtivos no tema estudos métricos na base Scopus
Oliveira, Ely Francina Tannuri de;Gracio, Maria Cláudia Cabrini;
Perspectivas em Ciência da Informa??o , 2011, DOI: 10.1590/S1413-99362011000400003
Abstract: this research aims at analyzing the indicators of impact and relevance - total of published articles, average of citations, total number of citations and index h of the most productive researchers in the "metric studies" field, within periods of the scopus base by means of a correlation study, determining the best equation of regression of index h due to the total of citations, as well as to all other indicators under analysis. as research procedure, we used the search terms "bibliometr* or scientometr* or infometr* or webometr* or informetr* or webmemetr* or paentometr*", obtaining 36 researchers as the most productive ones. for each indicator, the following descriptive statistics were calculated: maximum, minimum, average, standard deviation and coefficient of variation. the coefficient of correlation of pearson was calculated and adjusted to the equation of regression of index h due to the total of citations. the equation of multiple regression was identified, from index h due to the other indicators. concluding, we highlight the need for a matching of such indicators to broadly describe a researcher's multifaceted profile, seeing the complementarity of information provided by the indicators of productivity and impact, from distinctive nature.
Productividad, visibilidad e impacto de la producción científica del Laboratorio Central de Líquido Cefalorraquídeo en el período 2004-2009
Dorta Contreras,Alberto Juan; Magraner Tarrau,María Esther; Torres Pombert,Ana; González,Yuleydi Mérida;
ACIMED , 2010,
Abstract: the central laboratory for cerebrospinal fluid was founded in 2004 in the medical science faculty "dr. miguel enríquez" from havana medical sciences university it has three main functions: scientific research, pre and postgraduate university teaching and medical attention as reference centre for excellence devoted to cerebrospinal fluid analysis. the purpose is to describe the scientific productivity, the visibility and its international impact of the scientific production made by central laboratory for cerebrospinal fluid during 2004-2009. the total of papers made by the four researchers was collected. the following database and database systems were consulted: web of science, scopus, pubmed y cumed. gopubmed was employed to identify author leadership and to make collaboration maps. productivity, visibility and h, g, r y a indexes as well as h1 and h2 successive index were calculated. the international authors ranking from lab members in two selected topic were determined. author's productivity was 16 papers average by author during the period 2004-2009. in 2009, almost 70% and more than 53% of the identified contributions were registered by pubmed and web of science. centre h1 index was 8 and h2 index was 3. in the theme "intrathecal synthesis of immunoglobulins" two researchers from this lab were ranked amongst the first 20 ones in the world. the productivity, visibility and impact of the scientific work of this centre due because of its established coherent politics have been contributed to place its researchers in an important place among the cuban neuroscientists and from the american continent devoted to cerebrospinal fluid studies.
PROInTec: un software para el tratamiento inteligente de datos sobre patentes
Giráldez Reyes,Raudel; Díaz Pérez,Maidelyn; Armas Pe?as,Dayron;
ACIMED , 2008,
Abstract: among the reductionist techniques that allow the representation of extensive domains of knowledge, we find the cluster analyses, the multidimensional scaling and the factor analyses, as well as other techniques of a more connective approach as the neuronal and social networks. each one of these tools, whether individually or combined in indistinct ways, makes possible nowadays the representation of large scientific fields and the making of world-scale maps of science. among their uses, one of the less common is the presentation of information from the patent records. starting from these antecedents, the progintec group developed a new work tool for the conduction of metric studies that enable the processing of patent information. the prointec software is presented and its main modules of operation, its different interfaces and application functionalities are described. the system was designed to facilitate the integral management of patents: from the automatic download of their full texts to their representation and presentation as technological maps for their analysis and decision making. prointec is a reliable tool, that does not need to migrate to other systems in none of its phases and that processes the information thoroughly. to this end, powerful data processing tools supported by their extensive use in commercial applications of great coverage and by their capacity to manage large volumes of data were used. finally, this design was conceived as a modular system that permits a high scaling.
Nuevos indicadores métricos para la evaluación de las publicaciones seriadas científicas y académicas New metric indicators for evaluation of scientific and academic serials
Rubén Ca?edo Andalia,Jaime Cruz Font
ACIMED , 2012,
Abstract: La aparición reciente de indicadores novedosos como el Eigen factor, el SCImago journal rank y el Source normalized impact per paper han multiplicado el interés en la evaluación métrica de las revistas científicas y académicas. Como norma, se proponen reducir las limitaciones se aladas en forma reiterada al clásico factor de impacto e introducir nuevas perspectivas para la evaluación de las publicaciones seriadas. Sin embargo, estos también son mucho más complejos desde el punto de vista conceptual y matemático. Por esta razón, antes de su introducción definitiva en la práctica se requiere comprender su significado real, propósitos, relaciones, ventajas y limitaciones, es decir, caracterizar de manera individual y colectiva los indicadores estudiados, así como identificar sus ventajas en relación con el factor de impacto y sus limitaciones en general. The recent emergence of novel indicators as the Eigen factor, the SCImago journal rank and the Source normalized impact per paper have increased interest in metric evaluation of scientific and academic journals. As a rule, they intend to reduce the limitations mentioned repeatedly to the classical impact factor and introduce new perspectives for evaluating the use of serials. However, they are also more complex from a conceptual and mathematical perspective. For this reason, before its final introduction into practice, it requires to understand its real meaning, purpose, relationships, strengths and limitations, that means characterize individually and collectively studied indicators and identify their advantages over the impact factor and its limitations in general.
Análisis métrico de la revista MEDISAN en el período 2004-2007 Metric analysis of MEDISAN journal in the period 2004-2007
Omara Mercedes Cardona Sánchez,Gertrudis de la Torre Vega,Tatiana Casta?eda Amondaray,Rubén Ca?edo Andalia
ACIMED , 2009,
Abstract: Se estudió la producción científica publicada por la revista electrónica provincial MEDISAN, de Santiago de Cuba, en el período 2004-2007, con el objetivo de caracterizar dicha producción así como las referencias bibliográficas utilizadas para su generación. Se observó la tipología documental y las temáticas de investigación más frecuentes. Se determinó el índice de Price para los artículos así como la productividad de sus autores. El universo quedó constituido por 179 artículos del cuatrienio estudiado y sus 2 503 referencias bibliográficas. En cada uno de los a os estudiados, el índice de Price obtuvo valores por debajo de 0,5, y ello revela la falta de actualidad de las referencias empleadas para elaborar los trabajos en el período objeto de análisis. Se observó un predominio de los artículos científicos. Las especialidades de Obstetricia y Ginecología, Oftalmología y Estomatología fueron las más tratadas. La mayoría de los autores aportó un solo artículo a la muestra estudiada. The scientific production published by MEDISAN electronic journal from Santiago de Cuba in the period 2004-2007 was studied aiming to characterize that production as well as the bibliographical references used for the production. The documental typology was observed and the most frequent themes of investigation. The Price index for the articles was determined and the productivity of the authors. The universe was constituted by 179 articles of the cuatrienium studied and its 2 503 bibliographical references. In all the years studied, the Price index obtained values less than 0.5, and this reveals the lack of actualization in the references used to elaborate the papers in the period being analyzed. A predominance of scientific articles was observed. Obstetrics and Gynaecology, Ophthalmology and Dentistry were the specialities most treated. The majority of the authors have only one article in the studied sample.
Indicadores basados en análisis de citas para la caracterización de las neurociencias cubanas Citation-based indicators for the characterization of Cuban Neurosciences
Alberto Juan Dorta Contreras,Ricardo Arencibia Jorge,Yohannis Martí Lahera,Juan A Araújo Ruiz
ACIMED , 2008,
Abstract: Las neurociencias constituyen uno de los frentes de investigación más visibles de la producción científica de Cuba. Como sector de la investigación, ellas se caracterizan por el alto nivel de colaboración entre sus especialistas, citación y una gran multidisciplinariedad. En el presente trabajo se analizaron las estadísticas de producción y el uso de una muestra de científicos cubanos altamente productivos en esta área. El estudio sistemático del quehacer de los neurocientíficos cubanos mediante indicadores basados en análisis de citas, objetivo principal del presente estudio, revelará en el futuro -con mayor nivel de detalle- las características de su producción documental, a la vez que será un instrumento imprescindible para una mejor evaluación de su desempe o como investigadores, así como de su eficiencia científica. Neurosciences are one of the most visible research fronts in the scientific production of Cuba. As research area they are characterized by high degree of collaboration among there specialists, citation and multidisciplinarity. The production and use statistics from high productive Cuban scientists in this sector were analyzed. The systematic study of Cuban Neuroscientists activity through indicators based on citation analysis, the main objective of the current work, will show in the future the characteristics of its documental production with a more levels of detail, at the same time that it will become an essential tool for a better evaluation of its performances and scientific efficiency.
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