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Search Results: 1 - 10 of 448353 matches for " López-Bastida J. "
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Los costes socioeconómicos de las enfermedades cardiovasculares y del cáncer en las Islas Canarias en 1998
López-Bastida,J.; Serrano-Aguilar,P.; Duque-González,B.;
Gaceta Sanitaria , 2003, DOI: 10.1590/S0213-91112003000300007
Abstract: objective: to evaluate the economic impact in terms of direct and indirect costs of the cardiovascular disease and cancer in the canary islands in 1998. methods: the cost-of-illness method was used. direct and indirect costs were estimated using prevalence costs, i.e., the costs produced in 1998. direct costs were divided into hospitalization costs, outpatient costs, primary health care costs, and drug costs while indirect costs were obtained through transformation of physical units into monetary units using the approach of human capital theory and the friction cost method. results: the total costs of cardiovascular disease and cancer were 246.11 and 193.72 million euros respectively. the direct costs of the two diseases were 134.44 and 58.04 million euros respectively, representing 55% and 30% of total costs and 16% of total health care expenditure in this region. the indirect costs of these two diseases were 111.68 and 135.68 million euros respectively, representing 45% and 70% of total costs. use of the friction cost method revealed that indirect costs decreased by 88% for cardiovascular disease and those for cancer decreased by 77%. conclusions: although this study adopts a conservative approach by omitting costs associated with pain and suffering, permanent disability, and those of at-home care provided by the family, the annual socioeconomic cost of cardiovascular disease and cancer in the canary islands was high, amounting to 440 million euros.
Los costes socioeconómicos de las enfermedades cardiovasculares y del cáncer en las Islas Canarias en 1998
López-Bastida J.,Serrano-Aguilar P.,Duque-González B.
Gaceta Sanitaria , 2003,
Abstract: Objetivo: Evaluar el impacto económico, en términos de costes directos e indirectos, de las enfermedades cardiovasculares y del cáncer, en Canarias, durante el a o 1998. Métodos: El enfoque que se ha utilizado es el método del coste de la enfermedad. Los costes directos e indirectos se han estimado utilizando los costes de la prevalencia, es decir, los costes que se produjeron durante el a o 1998. Los costes directos se han desglosado en costes de las hospitalizaciones, consultas externas, atención primaria y fármacos. Los indirectos se han obtenido a partir de unidades físicas mediante su transformación en unidades monetarias utilizando el enfoque de la teoría del capital humano y el método del período de fricción. Resultados: Los costes totales de las enfermedades cardiovasculares y del cáncer ascendieron a 246,11 y 193,72 millones de euros, respectivamente, utilizando el método del capital humano. Los costes directos atribuibles a las mismas fueron de 134,44 y 58,04 millones de euros, respectivamente, representando el 55 y 30% de los costes totales y el 16% del gasto total sanitario en esta región. Los costes indirectos de estas dos enfermedades ascendieron a 111,68 y 135,68 millones de euros, respectivamente, representando el 45 y 70% del total. Utilizando el método del período de fricción, los costes indirectos se redujeron en un 88% para enfermedades cardiovasculares y en un 77% en el cáncer. Conclusiones: A pesar de haberse adoptado un enfoque conservador, dado que en este estudio no se incluyen los costes asociados con el dolor y el sufrimiento, la invalidez permanente y la atención en el hogar por parte de los familiares, el elevado coste socioeconómico anual de las enfermedades cardiovasculares y del cáncer en Canarias alcanzó los 440 millones de euros.
Análisis de costes y ahorros potenciales relacionados con la utilización de pruebas preoperatorias en los hospitales de Canarias
López-Bastida,J.; Serrano-Aguilar,P.; Duque-González,B.; Talavera-Déniz,A.;
Gaceta Sanitaria , 2003, DOI: 10.1590/S0213-91112003000200007
Abstract: objective: to estimate the potential cost savings that might take place in the canary islands health service (chs) through the appropriate scientific use of preoperative tests, using information obtained from five public university hospitals. methods: a questionnaire was completed by 55 anesthesiologists, representing 60% of the total in the chs. the questionnaire paid special attention to the most frequently used preoperative tests: chest radiograph, electrocardiogram, laboratory tests, and spirometry. the mean unit costs for the various preoperative tests were obtained from the two hospitals participating in the study. to calculate the potential cost savings derived from the appropriate use of preoperative tests, several scenarios were considered. these were characterized by different hypotheses or degrees of fulfillment of a protocol based on scientific knowledge and considered as the gold standard. results: in the ideal scenario in which the recommended scientific protocol was fulfilled in 100% of the 16 179 patients with an american society of anesthesiologists (asa) grade of i-ii, the economic impact would be notable, since it would free sensitive resources that could be used for other health programs. these figures could amount to approximately 1.02 million euros, without considering the cost of preoperative hospital stay. this figure could increase by up to approximately 2.13 million euros if one day of preoperative hospital stay were included and by up to 3.24 million euros if two days of preoperative hospital stay were included. conclusions: the recent literature review and the results of the questionnaire applied in the chs indicate that preoperative tests are of greatest benefit to patients and to society if their use is guided by scientific knowledge. in addition, resources can be freed by better selection and utilization of preoperative tests.
Análisis de costes y ahorros potenciales relacionados con la utilización de pruebas preoperatorias en los hospitales de Canarias
López-Bastida J.,Serrano-Aguilar P.,Duque-González B.,Talavera-Déniz A.
Gaceta Sanitaria , 2003,
Abstract: Objetivos: Estimar el ahorro potencial que podría tener lugar en el Servicio Canario de Salud (SCS), a partir de una utilización apropiada científica de las pruebas preoperatorias, haciendo uso de la información obtenida de los 5 hospitales universitarios de la red pública. Métodos: Un total de 55 anestesiólogos (60%) del SCS cumplimentaron un cuestionario. En éste se prestó especial atención a las pruebas preoperatorias más frecuentemente utilizadas, como la radiografía de tórax, el electrocardiograma, las pruebas de laboratorio y la espirometría. Los costes unitarios medios para las diferentes pruebas preoperatorias se obtuvieron de 2 hospitales participantes en el estudio. Para calcular los ahorros potenciales derivados del uso apropiado de las pruebas preoperatorias se han considerado varios escenarios caracterizados por diferentes hipótesis o grados de cumplimiento de un protocolo basado en el conocimiento científico, considerado como parámetro de referencia. Resultados: En el caso ideal de que se cumpliera el protocolo científico recomendado en el 100% de los 16.179 pacientes considerados ASA I y II, la repercusión económica sería notable, pues supondría una liberación de recursos sensible que podría ser utilizada para otros programas de salud. Estas cifras podrían alcanzar aproximadamente los 1,02 millones de euros, sin considerar el coste de la estancia preoperatoria. Esta cifra podría incrementarse hasta, aproximadamente, los 2,13 millones de euros si incluimos un día de estancia preoperatoria, y hasta los 3,24 millones de euros incluyendo 2 días de estancia preoperatoria. Conclusiones: La revisión reciente de la literatura científica y los resultados proporcionados por el cuestionario aplicado en el SCS indican que las pruebas preoperatorias alcanzan los mayores beneficios para los pacientes y para la sociedad si se guían por el conocimiento científico. Es posible, además, liberar recursos a partir de una mejor selección y utilización de las pruebas preoperatorias.
Influencia de características microestructurales de caolinita en las propiedades de sus pastas de colaje
García-Portillo, C.,Bastida, J.,Pardo, P.,Rodríguez-López, G.
Boletín de la Sociedad Espa?ola de Cerámica y Vidrio , 2005,
Abstract: The granulometrical, chemical, mineralogical and microestructural characterizations of 9 kaolins and 4 clays widely used as raw materials at the Manises ceramic cluster were performed. Technological properties such as viscosity, thickness formation speed, shrinkage, water absorption and apparent density of all materials were studied. The aim of the work is to analyse the relationships between the characteristics of the materials and their technological properties, paying special attention to the kaolinite crystallite size. Significant relationships between kaolinite crystallite size and properties after firing such as water absorption and apparent density were found. The most important characteristic was the clay fraction, showing relationship with water absorption, apparent density and casting rate. En el presente trabajo se realiza la caracterización granulométrica, mineralógica, química y microestructural de 9 caolines y 4 arcillas de amplio uso en el clúster cerámico de Manises. Se determinan propiedades en crudo (viscosidad, velocidad de formación de capa) y en cocido (absorción de agua, contracción, densidad aparente) y se analizan las relaciones existentes entre dichas propiedades y las características composicionales, prestándose especial atención a la influencia de la microestructura de la caolinita. Se concluye que existe relación entre el tama o de cristalito de la caolinita y propiedades en cocido como la absorción de agua y la densidad aparente. Destaca como principal parámetro de composición el contenido en fracción fina de los materiales, que se relaciona con la densidad aparente, la absorción de agua, y la velocidad de formación de pared.
Covariant hydrodynamic Lyapunov modes and strong stochasticity threshold in Hamiltonian lattices
M. Romero-Bastida,Diego Pazó,Juan M. López
Physics , 2012, DOI: 10.1103/PhysRevE.85.026210
Abstract: We scrutinize the reliability of covariant and Gram-Schmidt Lyapunov vectors for capturing hydrodynamic Lyapunov modes (HLMs) in one-dimensional Hamiltonian lattices. We show that,in contrast with previous claims, HLMs do exist for any energy density, so that strong chaos is not essential for the appearance of genuine (covariant) HLMs. In contrast, Gram-Schmidt Lyapunov vectors lead to misleading results concerning the existence of HLMs in the case of weak chaos.
Structure of characteristic Lyapunov vectors in anharmonic Hamiltonian lattices
M. Romero-Bastida,Diego Pazó,Juan M. López,Miguel A. Rodríguez
Physics , 2010, DOI: 10.1103/PhysRevE.82.036205
Abstract: In this work we perform a detailed study of the scaling properties of Lyapunov vectors (LVs) for two different one-dimensional Hamiltonian lattices: the Fermi-Pasta-Ulam and $\Phi^4$ models. In this case, characteristic (also called covariant) LVs exhibit qualitative similarities with those of dissipative lattices but the scaling exponents are different and seemingly nonuniversal. In contrast, backward LVs (obtained via Gram-Schmidt orthonormalizations) present approximately the same scaling exponent in all cases, suggesting it is an artificial exponent produced by the imposed orthogonality of these vectors. We are able to compute characteristic LVs in large systems thanks to a `bit reversible' algorithm, which completely obviates computer memory limitations.
Preservation of Minority Languages in North America: French Immersion Programs in the Province of Alberta  [PDF]
Baltasar J. López Ruiz
Open Journal of Social Sciences (JSS) , 2015, DOI: 10.4236/jss.2015.34012
Abstract: Canada, which was officially declared a bilingual nation after the proclamation of the Official Language Act (1969), counts with a low percentage of French speaking population who hardly reaches a quarter of the total population. We must add the fact that there is a very little fraction of the population who speaks French outside the province of Quebec. Social, cultural and ethnic realities which are present within the Canadian territories enable us to observe and investigate the diversity of identities and the different linguistic assimilation processes experienced by non Anglophone citizens. Facts seem to indicate that the francophone minority groups, living in areas of the country where the most spoken language is different from their mother tongue, struggle for the preservation of their cultural heritage at the same time that keep alive their Canadian identity. The possibility of contrasting the situation of the Francophones in Western Canada with the reality of other minority groups which represent a similar percentage with respect to the total population—such as the Germans and the Ukrainian origin citizens—constitutes a valuable resource in order to predict the evolution of the demographic patterns and the use of French as a heritage language within the Canadian territories. The present work reviews the diverse political, linguistic and demographic contexts that may support our idea that using an additional language—French and English in the case of most Francophones in Western Canada—represents an advantage from a cognitive, social and linguistic point of view. The high degree of acceptance of the francophone schools and the popularity of the French immersion programs set up by Albertan authorities are considered within this article in order to support this hypothesis.
Numerical Solution of a Complete Formulation of Flow in a Perfusion Bone-Tissue Bioreactor Using Lattice Boltzmann Equation Method
T. J. Spencer,I. Halliday,C. M. Care,S. H. Cartmell,L. A. Hidalgo-Bastida
Quantitative Biology , 2011,
Abstract: We report the key findings from numerical solutions of a model of transport within an established perfusion bioreactor design. The model includes a complete formulation of transport with fully coupled convection-diffusion and scaffold cell attachment. It also includes the experimentally determined internal (Poly-L-Lactic Acid (PLLA)) scaffold boundary, together with the external vessel and flow-port boundaries. Our findings, obtained using parallel lattice Boltzmann equation method, relate to (i) whole-device, steady-state flow and species distribution and (ii) the properties of the scaffold. In particular the results identify which elements of the problem may be addressed by coarse grained methods such as the Darcy approximation and those which require a more complete description. The work demonstrates that appropriate numerical modelling will make a key contribution to the design and development of large scale bioreactors.
Coste-efectividad de un programa de actividad física de tiempo libre para prevenir el sobrepeso y la obesidad en ni?os de 9-10 a?os
Moya Martínez,Pablo; Sánchez López,Mairena; López Bastida,Julio; Escribano Sotos,Francisco; Notario Pacheco,Blanca; Salcedo Aguilar,Fernando; Martínez Vizcaíno,Vicente;
Gaceta Sanitaria , 2011, DOI: 10.1590/S0213-91112011000300005
Abstract: objective: to assess the cost-effectiveness a school-based intervention designed to reduce overweight/obesity and other cardiovascular risk factors in children. methods: standard cost effectiveness analysis methods and two perspectives (societal and institutional) were used. a cluster-randomized controlled trial with 10 intervention schools (691 children) and 10 control schools (718 children) was performed. net costs were calculated by subtracting the usual after-school care cost from intervention costs. the effectiveness of the intervention was measured as the reduction in health outcomes compared with the control group. results: the intervention costs totaled 125,469.75€, representing 269.83€/year/child. the usual after-school care was estimated at 844,56€/year/child. intervention children showed a decrease in triceps skinfold thickness (-1.25mm, 95% ci: -1.82 to -0.67; p <.001). intervention children with body mass index (bmi) between the percentiles 25 and 75 showed a decrease in the percentage of body fat (-0.59%; 95% ci: -1.03 to -0.67; p<.001), and those with a bmi>p75 showed a decrease in triceps skinfold thickness (-1.87mm; 95%ci: -3.43 to -0.32; p<.001), and percentage of body fat (-0.67%; 95%ci: -1.32 to -0.01; p<.05). conclusions: this type of after-school program for recreational physical activity to prevent obesity are likely to be a cost-effective use of public funds and warrant careful consideration by policy makers and program planners.
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