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Search Results: 1 - 10 of 190186 matches for " Tejada-Gómez "
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Ranking de revistas científicas en Latinoamérica mediante el índice h: estudio de caso Colombia
Romero-Torres, Mauricio,Acosta-Moreno, Luis Alberto,Tejada-Gómez, María Alejandra
Revista Espa?ola de Documentación Científica , 2013,
Abstract: The future of scientific journals in Latin America is uncertain. The inability to calculate bibliometric indicators to classify and homologate journals according to globally-used quartiles reduces journal visibility. For instance, Colombian journals classified in the National Bibliographic Database Publindex (BBNP) under categories A1, A2, B and C, have low rates of indexing in international databases, such as Web of Science or Scopus, thus limiting the estimation of bibliometric indicators for comparison at an international level. In this case study, articles published between 2003 and 2007 were taken from 211 journals selected from the BBNP- 2008. Using Google Scholar, Publish or Perish software and the Scopus database, impact and productivity indicators were quantified and compared creating a regional ranking (Q1-Q4). They were subsequently homologated internationally with the Scimago Journal Ranking (SJR). The h index proved the best indicator to generate the ranking of 170 Colombian journals based on quartiles (Q1-Q4) able to be homologated with SJR quartiles. We propose this methodology for classifying and homologating Latin American journals that are not indexed internationally, as a useful tool for publishers, publishing houses, information agencies and public policy decision-makers concerning education, science and technology, both regionally and globally. El futuro de las revistas científicas en Latinoamérica es incierto. La incapacidad de calcular indicadores bibliométricos útiles para clasificarlas y homologarlas con cuartiles de referencia mundial reducen su visibilidad. Por ejemplo, las revistas colombianas clasificadas en la Base Bibliográfica Nacional Publindex (BBNP) bajo las categorías A1, A2, B y C, poseen baja indexación en bases de datos internacionales como Web of Science o Scopus, limitando la estimación de indicadores bibliométricos para su comparación a nivel internacional. Como estudio de caso se seleccionaron 211 revistas de la BBNP-2008, tomando artículos publicados entre 2003 y 2007. Utilizando Google Académico, el software Publish or Perish y la base de datos Scopus, se cuantificaron y compararon indicadores de productividad e impacto para construir un ranking local (Q1-Q4) y realizar una homologación internacional con Scimago Journal Rank (SJR). El índice h resultó el mejor indicador para generar un ranking basado en cuartiles (Q1-Q4) de 170 revistas colombianas, homologables con cuartiles de SJR. Se propone esta metodología para clasificar y homologar las revistas latinoamericanas no indexadas, como herramienta útil para
Ampullary carcinoid tumor: An atypical location Tumor carcinoide primario de conductos biliares extrahepáticos, una localización atípica
Luis Tallón-Aguilar,Remedios Jurado-Marchena,Antonio Tejada-Gómez,Rafael Balongo-García
Revista Espa?ola de Enfermedades Digestivas , 2012,
Abstract:
Factores psicosociales y laborales asociados al burnout de psiquiatras en Colombia
Tejada M,Paola Andrea; Gómez O,Viviola;
Revista Colombiana de Psiquiatría , 2009,
Abstract: introduction: burnout is a consequence of chronic work stress. the negative consequence of stress can affect not only the well-being of the physicians but also the quality of care they give to their patients. besides being a public health problem, it may also be an obstacle to the smooth running of the institution. as such, it is important to strengthen the research on burnout in our environment. method: seven participants were selected from each group of psychiatrists (high versus low burnout). an interview based on a semistructured questionnaire was carried out with each participant. the interviews were recorded and transcribed verbatim. the transcriptions were analyzed by using a case study approach for qualitative analysis. results: as regards the analysis of the interviews, this study emphasizes the importance of the effort-reward and demand-control models for the study of burnout in psychiatrists. it was observed that the imbalance between the model components is caused by individual factors such as overcommittment with work, interpersonal factors and organizational factors. conclusions: high levels of burnout in psychiatrists may have an impact on their effectiveness when working with patients. this means that the best way to improve the patients’ satisfaction, is to improve the welfare and satisfaction of the psychiatrists. for this reason, apart from personal considerations, prevention of burnout should be carried out based on profession policies with the aim of modifying some of the current work forms in the institutions.
Factores psicosociales y laborales asociados al burnout de psiquiatras en Colombia Psychosocial and Work Factors Associated with Burnout in Colombian Psychiatrists
Paola Andrea Tejada M,Viviola Gómez O
Revista Colombiana de Psiquiatría , 2009,
Abstract: Introducción: El burnout es una consecuencia del estrés laboral crónico. Sus efectos negativos pueden afectar no sólo el bienestar de los médicos, sino la calidad del cuidado brindado a sus pacientes. Además de ser un problema de salud pública, también puede ser un obstáculo para lograr un buen funcionamiento institucional. Por estos motivos, es necesario fortalecer la investigación sobre burnout en nuestro medio. Método: Se seleccionaron siete participantes de dos grupos de psiquiatras (alto frente a bajo burnout). Con cada participante se realizó una entrevista semiestructurada, que fue grabada y trascrita. Las trascripciones se analizaron utilizando la metodología de análisis de casos para investigación cualitativa. Resultados: Este estudio recalca la importancia de los modelos de esfuerzo-recompensa y de demandacontrol para el estudio del burnout en psiquiatras. Se observó que el desequilibrio entre los componentes del modelo está dado por factores personales como el sobrecompromiso con el trabajo, factores interpersonales y factores organizacionales. Conclusiones: Altos niveles de burnout en los psiquiatras pueden tener un impacto en el trabajo con sus pacientes. Esto significa que la mejor forma de mejorar la satisfacción de los pacientes es mejorar el bienestar y la satisfacción de los psiquiatras. Por este motivo, además de las consideraciones personales, la prevención del burnout debe hacerse desde políticas gremiales que permitan modificar algunas formas de trabajo presentes en las instituciones. Introduction: Burnout IS a consequence of chronic work stress. The negative consequence of stress can affect not only the well-being of THE PHYSICIANS but also the quality of care they give to their patients. Besides being a public health problem, it may also be an obstacle to the smooth running of the institution. As such, it is important to strengthen the research on burnout in our environment. Method: Seven participants were selected from each group of psychiatrists (high versus low burnout). An interview based on a semistructured questionnaire was carried out with each participant. The interviews were recorded and transcribed verbatim. The transcriptions were analyzed by using a case study approach for qualitative analysis. Results: As regards the analysis of the interviews, this study emphasizes the importance of the Effort-Reward and Demand-Control models for the study of burnout in psychiatrists. It WAS observed that the imbalance between the model components is caused by individual factors such as overcommittment with work, interpersonal facto
The Dispersion Equation of MGD Waves for non-stationary Plasmas
H. Pérez-de-Tejada,Eric Gómez-Gómez
Physics , 2014,
Abstract: The dispersion equation of MGD plasma waves measured in a reference frame with a relative speed from that where they are generated is derived. The analysis leads further from what is known for waves produced in stationary plasmas in the presence of an imposed magnetic field, and includes terms containing space gradients in the density and speed values in the continuity and momentum equations of the plasma. The dispersion equation that is derived leads to an Alfven wave and magnetogasdynamics wave modes whose distribution with respect the direction of the imposed magnetic field varies with the relative speed of the reference frame. For the particular case in which the speed of the reference frame is zero the dispersion equation of the magnetogasdynamic waves reduces to what is known for stationary plasmas. More complicated waves with different distribution modes with respect to the magnetic field direction are implied from the more general four-order dispersion equation that is derived. A particular case is presented for a non-zero speed value of the reference frame, but the derivation and analysis of the corresponding solutions will be discussed in a forthcoming report.
Influencia de los diferentes regímenes de administración de los bifosfonatos sobre la tolerabilidad
Sosa Henríquez,M.; Gómez de Tejada Romero,M. J.;
Anales de Medicina Interna , 2006, DOI: 10.4321/S0212-71992006001200011
Abstract: osteoporosis is the most prevalent metabolic bone disease and fractures are its clinical complication. we have nowadays some drugs that reduce the incidence of new fractures: bisphosphonates. nevertheless, treatment must be taken properly in the long run to reduce the incidente of new fractures and a few months alter starting the treatment, a great number of patients stop it because of different reasons. the introduction of new bisphosphonates that can be taken weekly or even better monthly, has improved notably the adherence and compliance to osteoporosis treatment.
Funciones y escenarios de actuación del profesor universitario: Apuntes para la definición del perfil basado en competencias
Ruiz Bueno, Carmen;Mas Torelló, óscar;Tejada Fernández, José;Navío Gámez, Antonio;
Revista de la educación superior , 2008,
Abstract: the accelerated changes that our society is living (globalization, technological revolution, multiculturality, uncertainty valuation) are affecting the educative institutions. these social alterations next to the european convergence (european space for higher education and european space of research), the educative paradigm changes (centred in learning), the revisionist moment that the socio-educative institutions are living (new exigencies of quality, effectiveness, efficiency) causes new demands and, in mid term, great amendments at the university. all these changes generate the need to transform the university teacher professional abilities as to go on within the new context.
La didáctica en un entorno virtual interuniversitario: experimentación de ECTS apoyados en TIC
José Tejada Fernández,Antonio Navío Gámez,Carmen Ruiz Bueno
Pixel-Bit , 2007,
Abstract: En el contexto actual de desarrollo tecnológico y de construcción del Espacio Europeo de Educación Superior (EEES), emergen, entre otras igualmente relevantes, las necesidades de adaptación a las nuevas exigencias de trabajo didáctico, de estrategias propiciadas por el propio sistema ECTS. Es decir, la exigencia de experimentar metodologías relacionadas con la implementación inminente de los créditos europeos. En el estudio, realizado sobre la virtualización de determinadas asignaturas del Plan de Estudios de Pedagogía, se presentan varios proyectos individuales que conjuntamente apuestan por la incorporación de las TIC a la docencia como uno de los elementos clave para mejorar el proceso de ense anza-aprendizaje, así como la experimentación de los créditos europeos. En este artículo se presentan los resultados más relevantes de la experimentación realizada en el curso académico 2005-2006, desde la valoración de los actores (profesores y alumnos).
Peritoneal carcinomatosis of colorectal origin. Current treatment: Review and update Carcinomatosis peritoneal de origen colorrectal. Estado actual del tratamiento: Revisión y puesta al día
A. Gómez Portilla,I. Cendoya,I. López de Tejada,I. Olabarría
Revista Espa?ola de Enfermedades Digestivas , 2005,
Abstract: Colorectal cancer is the most frequent tumor of the digestive tract. The high incidence of abdominal dissemination; the poor prognosis of these patients, with median survival consistently ranging from 5 to 9 months in all studies of peritoneal carcinomatosis from colorectal cancer; the failure of adjuvant systemic chemotherapy treatment with a maximal survival of 18 months despite the development of new cytostatic drugs, and new combinations of use, make it crucial to search for and develop new treatment strategies. We review the principles of Sugarbaker′s treatment protocol, which involves the combination of maximum cytoreductive radical oncological surgery for the treatment of all macroscopically disseminated disease with maximum perioperative intraperitoneal intensification chemotherapy to treat residual microscopic disease. We present the results of several scientific papers, all of them phase II studies with more than 10 patients treated, published in the medical literature by the main groups working in this line of treatment, together with the only phase III study reported and published so far, and finally the results of a recently reported retrospective international multicenter study. With this new alternative therapeutic approach, overall mean survival is 40% at 36 months, and 20% at 5 years. Based on these results, this new therapeutic approach is proposed as the treatment of choice for these unfortunate patients. El cáncer colorrectal es el tumor más frecuente del tracto digestivo. La alta incidencia de diseminación abdominal, el pobre pronóstico de estos pacientes con una mediana de supervivencia entre 5 y 9 meses demostrada repetidamente en todos los estudios de carcinomatosis peritoneal por cáncer colorrectal, el fracaso de los tratamientos sistémicos adyuvantes con quimioterapia con supervivencias máximas de 18 meses independientemente del desarrollo de nuevas drogas citostáticas y las nuevas combinaciones o formas de uso, hacen crucial la investigación y el desarrollo de nuevas estrategias de tratamiento. Revisamos los principios del protocolo del tratamiento de Sugarbaker, que contempla la combinación de la máxima cirugía radical oncológica citorreductora para el tratamiento de la enfermedad macroscópica diseminada con la máxima quimioterapia de intensificación intraperitoneal perioperatoria para el tratamiento de la enfermedad microscópica residual. Se presentan los resultados de las publicaciones científicas, de todos los estudios fase II con más de 10 pacientes tratados publicados en la literatura médica por los principales grupos de
Síntesis, estructura y propiedades de transporte de nuevos óxidos complejos de cobre, plata y plomo
Tejada-Rosales, E. M.,Oro-Sole, J.,Gómez-Romero, P.
Boletín de la Sociedad Espa?ola de Cerámica y Vidrio , 2002,
Abstract: A solid solution of formula Ag5Pb2-xCuxO6, (x = 0, 0.1, 0.3, 0.5) is reported. The synthesis was carried out by coprecipitation of Ag(I), Pb(II) and Cu(II) nitrates in alkaline media. The structure of the series is that of the parent Ag5Pb2O6, with Cu(II) occupying part of the octahedral Pb(IV) sites. This substitution induces interesting changes in the transport properties of the different members of the series, which range from metallic conductivity to semiconducting behavior. From Rietveld analysis for Ag5Pb1.5Cu0.5O6, the best fit is obtained for a model with Pb and Cu disordered occupying the octahedral site (Pm1, a = 5.8306(9) , c = 6.3430(6) , V = 187.37 3). Se presenta la síntesis y caracterización de la serie de disolución sólida Ag5Pb2-xCuxO6, (x = 0, 0.1, 0.3, 0.5). La síntesis se llevó a cabo mediante coprecipitación de los nitratos de Ag(I), Pb(II) y Cu(II) en medio básico. La estructura de la serie es la del óxido Ag5Pb2O6, con el Cu(II) ocupando parcialmente los sitios octaédricos del Pb(IV). Esta sustitución induce cambios interesantes en las propiedades de transporte eléctrico de los miembros de la serie, que van desde conductividad metálica a comportamiento semiconductor. El análisis Rietveld para el óxido Ag5Pb1.5Cu0.5O6, mostró un modelo estructural óptimo en el que Pb y Cu comparten el sitio octaédrico en una distribución desordenada (Pm1, a = 5.8306(9) , c = 6.3430(6) , V = 187.37 3).
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