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Search Results: 1 - 10 of 211213 matches for " Martín Sempere "
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Estructura y dinámica de los grupos de investigación
Rey Rocha, Jesús,Martín Sempere, María José,Sebastián, Jesús
Arbor : Ciencia, Pensamiento y Cultura , 2008, DOI: 10.3989/arbor.2008.i732.219
Abstract: The importance of associability is being increasingly stated when the present ways of production of the knowledge are analyzed. Different organizational levels exist in the context of scientific research. Among them, research groups constitute one of the most generalized modalities of association. In this article we analyze conceptual and practical aspects which are considered when it comes to identify the nature and characteristics of research groups, as well as their differences with other modalities of scientific association, such as research teams. We emphasize the functional and dynamic character of research groups, which go through different stages in their evolution. We conclude that research groups must be considered as functional organizational units, instead than structural units. This has important consequences for the policies of promotion of research groups and for the consideration of groups on the part of research institutions. La importancia de la asociabilidad se está poniendo crecientemente de manifiesto cuando se analizan los actuales modos de producción del conocimiento. Existen diferentes niveles organizativos en el ámbito de la investigación científica, entre los que los grupos de investigación constituyen una de las modalidades de asociación más generalizadas. En este artículo se analizan los aspectos conceptuales y prácticos que se plantean cuando se trata de identificar la naturaleza y las características de los grupos de investigación, así como las diferencias con otras modalidades de asociación, como los equipos de investigación. Se enfatiza el carácter funcional y dinámico de los grupos de investigación, que transitan por diferentes etapas en su evolución. Se concluye que los grupos de investigación se deben considerar más como unidades organizativas funcionales que estructurales, lo que tiene importantes consecuencias en las políticas de fomento de los grupos e incluso en su consideración en las instituciones de investigación.
Validez del protocolo de adecuación de urgencias hospitalarias
Selva Teresa Sempere,Peiró Salvador,Pina Pilar Sendra,Espín Consuelo Martínez
Revista Espa?ola de Salud Pública , 1999,
Abstract: FUNDAMENTO: Diversos trabajos sitúan la proporción de visitas inadecuadas a los servicios de urgencia hospitalarios entre el 20% y el 80% del total. Este amplio intervalo se debe, en buena parte, a la inexistencia de un consenso en torno a la definición de urgencia y el nivel asistencial idóneo para la atención de cada situación posible que conduce al uso de juicios subjetivos para evaluar la inadecuación. El objetivo de este trabajo es desarrollar y validar un instrumento objetivo de identificación de urgencias hospitalarias inadecuadas. MéTODO: A partir de un marco conceptual que incluía como dimensiones la gravedad clínica del paciente, la intensidad de los servicios prestados y algunas situaciones que justificarían la adecuación de las visitas espontaneas, se construyó el Protocolo de Adecuación de Urgencias Hospitalarias, un instrumento con criterios explícitos para evaluar la adecuación de las visitas a los servicios de urgencia hospitalarios y se evaluó, en una muestra aleatoria de 100 historias clínicas de urgencias, su fiabilidad intra y entre observadores y su validez de criterio y predictiva frente al juicio de expertos. RESULTADOS: El Protocolo de Adecuación de Urgencias Hospitalarias mostró una excelente fiabilidad tanto intra como entre observadores (índices de acuerdo observado entre el 99% y 100%; estadístico kappa entre 0,97 y la unidad), y validez de criterio en el límite entre moderada y baja (índice de acuerdo observado 68%, estadístico kappa 0,39. Este bajo nivel de acuerdo se debe a que el Protocolo de Adecuación de Urgencias Hospitalarias se comporta como un instrumento muy especifico (los casos inadecuados según el juicio clínico son evaluados como inadecuados) pero poco sensible (sólo el 59% de los casos que el Protocolo de Adecuación de Urgencias Hospitalarias consideró apropiados, fueron valorados de esta forma por los clínicos). CONCLUSIONES: El Protocolo de Adecuación de Urgencias Hospitalarias se comporta como un instrumento muy fiable y capaz de identificar la fracción mas claramente inadecuada de las visitas inadecuadas a los Servicios de Urgencias Hospitalarios. Estas características lo hacen especialmente útil para las comparaciones entre centros y el seguimiento a lo largo del tiempo o la monitorización de intervenciones para reducir el uso inapropiado.
Noticias y experiencias
Sancho, Rosa,Codina, Lluls,Martín Sempere, M. José,Rey Rocha, Jesús
Revista Espa?ola de Documentación Científica , 1999,
Abstract:
Es adecuado el sistema espa ol de evaluación de la actividad investigadora para su aplicación a las Ciencias de la Tierra y otros campos afines?
López Vera, F.,Martín Sempere, M. J.,Rey Rocha, J.
Estudios Geologicos , 1999, DOI: 10.3989/egeol.99553-4175
Abstract: Through the survey Research activities in the R&D system in Earth Sciences in Spain (1990-1994)>>, information about different aspects of the professional activity of Spanish researchers in this field has been retrieved, as well as their opinion about prevailing research evaluation criteria. Starting from survey's results, we discuss the suitability of the present Spanish scientific evaluation system for assessing research activity of said researchers. Results show scientist's disagreement with the prevailing evaluation procedures and criteria. More than 70 % of both University and CSIC researchers consider that evaluation criteria are inappropriate or unacceptable, being this percentage significantly higher than the obtained from scientists belonging to other institutions. Disagreement with evaluation criteria is significantly lower among authors that only publish in foreign journals. Positive correlation has been found between opinion about evaluation criteria and the level of consolidation and stability of research teams. Main cause of disagreement is concerned with the over-valuation of papers published in SCI journals and the scarce consideration given to high quality papers published in serious domestic journals and to other scientific contributions. Results suggest that the evaluation system could have been detrimental to researchers working in some scientific fields, but does not seem to have discriminate among basic and applied research or among research of local or national interest and those more internationally-oriented. The research evaluation system should consider the idiosyncrasy of the different scientific fields, as well as their particular and distinctive characteristics and dynamics. It should take into the adequate consideration quality scientific work that, despite being of particular importance in fields as Earth Sciences, is not published in SCI joumals. A través de la opinión expresada por los propios investigadores, se discute la idoneidad del actual sistema espa ol de evaluación de la actividad investigadora, para su aplicación en el campo de las Ciencias de la Tierra. Dicha opinión ha sido obtenida a través de la encuesta Actividades de investigación realizadas en el Sistema de I+D en Ciencias de la Tierra en Espa a, 1990-1994 , que recoge información sobre distintos aspectos de la actividad profesional de los investigadores espa oles en este campo. Los resultados muestran su desacuerdo con los criterios y el procedimiento de evaluación actualmente vigentes. Más del 70 % tanto de los profesores universitarios como de los i
Solitary Polypoid Laryngeal Xanthoma
Francisco Vera-Sempere,Diego Collado-Martín,Beatriz Vera-Sirera
Case Reports in Otolaryngology , 2013, DOI: 10.1155/2013/967536
Abstract: We report the case of a 51-year-old male smoker with diabetes mellitus and hyperlipidaemia and a long history of human immunodeficiency virus (HIV)/hepatitis C virus (HCV) infection treated with various antiretroviral regimes, who was referred to the otolaryngology department with progressive dysphonia. Fibre-optic laryngoscopy showed a solitary, yellowish-white pedunculated polyp on the anterior third of the left cord, with no other abnormality. Pathological analysis revealed a polypoid laryngeal xanthoma that was immunoreactive against CD68, perilipin, and adipophilin. This unusual laryngeal lesion in the clinical context of our patient suggests a possible role of antiretroviral treatment in the pathogenesis of these xanthomas. 1. Introduction An xanthoma is a localised collection of fat-laden histiocytes that is not considered a true tumour but rather a reactive histiocytic proliferation [1]. They are often, but not always, a consequence of hyperlipidaemia and are sometimes indicative of specific lipoprotein disorders. The clinical presentation of xanthomas is variable, often affecting the skin and subcutaneous or tendinous tissues. Mucosal xanthomas are uncommon [2] and a solitary xanthoma affecting the larynx is very rare; only two case reports have been published [3, 4]. We report a case of a solitary polypoid xanthoma of the vocal cord affecting a 51-year-old male smoker who had a long history of antiretroviral treatment for human immunodeficiency virus (HIV)/hepatitis C virus (HCV) coinfection, who presented with progressive dysphonia, and discuss the optical and immunohistochemical findings of this unusual lesion. 2. Case Report A 51-year-old male smoker (1 pack/day for 35 years) was referred to the otolaryngology department with progressive dysphonia of 3-week duration. The dysphonia was intermittent initially and later became almost constant. The medical history included an HIV-1 infection, diagnosed 25 years earlier and controlled with various antiretroviral drugs in the infectious diseases unit, with an acceptable current immunovirological status (CD4 529 cells/μL and serum viral load undetectable). The patient had also been diagnosed with HCV coinfection (genotype 3a) and had been treated with interferon-ribavirin. Currently the patient was a diabetic on insulin, had a serum dyslipidaemia attributed to antiretroviral treatment, and was receiving atorvastatin (40?mg/day). The lipid profile showed the following: total cholesterol: 253?mg/dL, high-density lipoprotein (HDL): 103?mg/dL, low-density lipoprotein (LDL): 135?mg/dL, very low-density
Validez del protocolo de adecuación de urgencias hospitalarias
Selva,Teresa Sempere; Peiró,Salvador; Pina,Pilar Sendra; Espín,Consuelo Martínez; Aguilera,Inmaculada López;
Revista Espa?ola de Salud Pública , 1999, DOI: 10.1590/S1135-57271999000400004
Abstract: background: different studies rate the proportional number of visits unsuited to the her services at 20%-80% of all. this wide range is due, in good part, to no consensus existing as to the definition of the term "emergency" and the ideal degree of assistance for dealing with each possible situation which leads to the use of subjective judgments for evaluating unsuitability. the purpose of this study is that of developing and validating an objective tools for pinpointing unsuitable hospital emergencies. method.- based on a conceptual framework which included as dimensions the seriousness of the clinical condition of the patient in question, the intensity of the services rendered and some situations which would warrant spontaneous visits being suitable, the hospital emergency suitability protocol (hesp), a tool entailing explicit criteria for assessing the suitability of the visits to the her?s, and a random sample of 100 emergency room clinical histories, the reliability thereof of observers on an individual and group basis and the validity of judgment and predictive validity thereof as regarding the opinion of experts having been analyzed results.- the hesp revealed itself to provide an excellent reliability rate of observers on an individual and group basis (indexes of agreement fond of 99%-100%; kappa statistic of 0.97 -1.00), and judgment validity on the borderline between moderate and low (index of agreement found of 68%, kappa statistic 0.39). this low level of agreement is due to the fact that the hesp functions like a highly specific (the inappropriate cases accord to the clinical judgment are evaluated as inappropriate) yet not highly sensitive tool (solely 59% of the cases which the hesp considered to be suitable were evaluated as such by the clinical judgments). conclusions.- the hesp acts as a highly reliable tool capable of pinpointing the most clearly unsuitable fraction of the inappropriate visits to the her?s. these characteristics make it useful for
Análisis de la producción científica espa ola en ecología y medio ambiente. 1989-1993
Pérez Alvarez-Ossorio, J. R.,Martín Sempere, M. J.,Fernández, M. T.,Vázquez, M.
Revista Espa?ola de Documentación Científica , 1997,
Abstract: Four databases have been used to analyze Spanish scientific production in Ecology and Environment: ICYT, a domestic database, for those works published in Spanish journals, and three interactional databases, Chemical Abstracts, Biosis and ASFA, for articles published in foreign journals. For both series, a subject distribution is made, according to four broad headlines included in the National Programme on Environment and Natural Resources : Environmental destruction; Environmental preservation; Environmental Technologies; and Dynamics of Ecosystems. Corporate sources of the articles are also analyzed, as well as their geographic distribution and the most frequently used journals. The high participation of universities (over two thirds of total articles) justifies a more detailed study of this institutional sector. Para el estudio de la producción científica espa ola en Ecología y Medio Ambiente se utilizan cuatro bases de datos: una nacional, lCYT, para lo publicado en revistas espa olas, y tres internacionales, Chemical Abstracts, Biosis y ASFA, para lo que se publica en revistas extranjeras. En ambos casos se analiza la distribución temática de los trabajos en cuatro grandes apartados incluidos en el Programa Nacional de Medio Ambiente y Recursos Naturales: Degradación ambiental; Conservación del Medio Ambiente; Tecnologías medioambientales; y Funcionamiento y Dinámica de Ecosistemas. Asimismo, se analiza el origen institucional de los trabajos, su distribución geográfica y las revistas más utilizadas, tanto nacionales como extranjeras. La alta participación de la Universidad, que representa dos tercios del total , justifica un estudio especial de su contribución, tanto por tipos de centros (Facultades y Escuelas Técnicas) como por universidades.
La reagrupación familiar de africanos y latinoamericanos en la Espa a mediterránea. Dinámicas y estructuras sociodemográficas
Gozálvez Pérez, Vicente,Sempere Souvannavong, J. D.,Martín-Serrano Rodríguez, G.,Valero Escandell, J. R.
Estudios Geográficos , 2012,
Abstract: The amount of foreigners authorised to live in Spain as residents between 2006 and 2009 due to family reunification reflects the significance of this type of immigration in the number of new registered foreigners. This research is based on a specific survey carried out on Africans and Latin Americans, who also provide information on the family members who have joined them here, in accordance with reunification laws or not. Africans and Latin Americans have very different dynamics and socio-demographic structures due, amongst other reasons, to the antiquity of their flows, their fertility rates, their command of Spanish, their level of education, their possibility of income, their structure by sex and age, the size of the reunited families, etc. Information is provided on both continental groups and family subgroups —those who reunite the family, spouses, children, parents and other family members— using scales for the group studied and for the geographical area —coastal Catalonia, the Region of Valencia, Murcia and Almeria—. Africans report the most negative structural aspects —Spanish language, education, income, etc.—; nevertheless it is this group that claim to have more firm and generalised intentions of staying in Spain. The conclusions in this paper give an indication of future flows for these two groups. Los extranjeros autorizados en 2006-2009 a residir en Espa a por motivos de reagrupación familiar, muestran la importancia que ha alcanzado esta forma de inmigración en el total de nuevos extranjeros empadronados. La investigación se basa en una encuesta específica a reagrupantes africanos y latinoamericanos, que también informan sobre sus familiares reagrupados, hayan utilizado, o no, las leyes de reagrupación. Africanos y latinoamericanos ofrecen dinámicas y estructuras sociodemográficas muy diferentes, a resultas, entre otras causas, de la antigüedad de sus flujos, su fecundidad, su dominio del idioma espa ol, su nivel de instrucción, sus posibilidades de ingresos, su estructura por sexo y edad, tama o de las familias reagrupadas, etc. Se ofrece información para los dos colectivos continentales y para los subgrupos familiares —reagrupantes, cónyuges, hijos, progenitores y otros familiares—, y se utilizan escalas del conjunto estudiado y de ámbitos territoriales —Catalu a litoral, Comunidad Valenciana, Murcia-Almería—. Los africanos concentran los aspectos estructurales más negativos —idioma espa ol, instrucción, ingresos,…—, pero también son los que declaran intenciones más firmes y generalizadas de permanencia en Espa a. Las conclusiones orien
Quistes epididimarios en la infancia
Chillón Sempere,Francisca Silvia; Domínguez Hinarejos,Carlos; Serrano Durbá,Agustín; Estornell Moragues,Francisco; Martínez-Verduch,Mario; García Ibarra,Francisco;
Archivos Espa?oles de Urología (Ed. impresa) , 2005, DOI: 10.4321/S0004-06142005000400007
Abstract: objectives: to retrospectively review all cases of epididymal cysts registered over the last five years; 15 cases have been included. simple epididymal cysts are a rare pathology in childhood, being most of them diagnosed in puberty. currently, due to the scarce case series, there is not consensus about the most adequate therapy. methods/results: mean age at presentation was 11.5 yr. (1-16). 50% were diagnosed incidentally and 29% presented increased scrotal size. 46% of the cases had associated left varicocele (n = 6) and 26% had history of orchiepididymitis. diagnosis was based on physical examination and confirmed by ultrasound. 40% of the patients underwent surgery and the remainder received conservative treatment without evidence of complications on follow-up. conclusions: due to the benign character and good evolution of all cases of epididymal cysts treated conservatively and the absence of benefit after surgical treatment, we believe that management should be conservative with clinical and ultrasound controls, leaving surgery for cysts with complications. the frequent association between epididymal cysts and varicocele is related to coincidence of both pathologies in the prepuberal age.
Tumores vesicales inusuales: carcinoma epidermoide, adenocarcinoma y sarcoma primarios. Comportamiento clínico. Nuestra experiencia
Queipo Zaragozá,J.A.; Chicote Pérez,F.; Borrell Palanca,A.; Beltrán Meseguer,J.F.; Alcalá-Santaella Casanova,C.; Martínez García,B.; Pastor Sempere,F.;
Actas Urológicas Espa?olas , 2003, DOI: 10.4321/S0210-48062003000200008
Abstract: introduction and objectives: non-transitional cell tumours of the bladder are both a diagnostic challenge for the pathologist and a therapeutic challenge for the urologist, because although uncommon (less than 5% of all malignancies of the bladder) they show different biological behaviours each requiring a unique approach. the most significant pathoanatomical types are: primary epidermoid carcinoma, primary adenocarcinoma and primary sarcoma. this paper presents an analysis of our experience in these types of tumours. material and methods: a retrospective study of unusual cases of cancer of the bladder seen in our hospital between 1988-2001. their biological behaviour and the therapies applied are analysed. the extravesical origin of the tumour was ruled out in all cases. results: we found 21 cases of the following pathoanatomical varieties: 13 epidermoid carcinomas, 7 adenocarcinomas (3 urachal) and 1 sarcoma. mean age was very different between epidermoid carcinomas (69.2 ± 9.1 years) and adenocarcinomas (50.3 ± 8.1). tumour behaviour was very aggressive in all three histological varieties. at the time of diagnosis 19 patients had locally advanced stages (≥t2). although elective therapy was cystectomy, this was only feasible in 10 cases. systemic chemotherapy (most frequently m-vac) and/or local radiotherapy was used in 7 cases. 14 patients have died after a mean survival of 15.7 ± 11.6 months. conclusions: late diagnosis of these tumours and their aggressive biological behaviour involve a gloomy prognosis. only early diagnosis and radical therapy could improve the prognosis.
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