6,793 research outputs found
Estudio de carcterĂsticas fenotĂpicas del VIH mediante la generaciĂłn y desarrollo de virus recombinantes: aplicaciĂłn al estudio de la capacidad replicativa de virus multirresistentes
Tesis Doctoral inĂ©dita leĂda en la Universidad AutĂłnoma de Madrid, Facultad de Ciencias, Departamento de BiologĂa Molecular.Fecha de lectura: 13-12-200
Dinámica no lineal y control en Ecosistemas
Resumen de Tesis Doctoral. Director: Ricard V. Solé. Centro: Universitat Politècnica de Catalunya. Universitat de Lleida. Fecha de lectura: 1 de Febrero 2002
Physical Activity and Sport for Acquired Brain Injury (PASABI): A Non-Randomized Controlled Trial.
Background and objectives: Acquired brain injury (ABI) is the first cause of disability and physical activity (PA) is a key element in functional recovery and health-related quality of life (HRQoL) during the subacute and chronic phases. However, it is necessary to develop PA programs that respond to the heterogeneity and needs of this population. The aim of this study was to assess the effectiveness of a PA program on the HRQoL in this population. Materials and Methods: With regard to recruitment, after baseline evaluations, participants were assigned to either the intervention group (IG, n = 38) or the control group (CG, n = 35). Functional capacity, mood, quality of life and depression were measured pre- and post-intervention. The IG underwent the “Physical Activity and Sport for Acquired Brain Injury” (PASABI) program, which was designed to improve HRQoL (1-h sessions, two to four sessions/week for 18 weeks). The CG underwent a standard rehabilitation program without PA. Results: Results for the IG indicated significant differences and large effect sizes for the physical and mental dimensions of quality of life, as well as mood and functional capacity, indicating an increase in HRQoL. No significant differences were found for the CG across any variables. Conclusions: The PASABI program was feasible and beneficial for improving physiological and functionality variables in the IG. The wide range of the activities of the PASABI program allow its application to a large number of people with ABI, promoting health through PA, especially in the chronic phasepost-print465 K
Madrid L6 chondrite (fall 1896): ESEM-cathodoluminescence survey
Depto. de Geodinámica, EstratigrafĂa y PaleontologĂaFac. de Ciencias GeolĂłgicasTRUEpu
Pre-Schauder Bases in Topological Vector Spaces
A Schauder basis in a real or complex Banach space X is a sequence (en)n is an element of N in X such that for every x is an element of X there exists a unique sequence of scalars (lambda n)n is an element of N satisfying that x= n-ary sumation n=1 infinity lambda nen. Schauder bases were first introduced in the setting of real or complex Banach spaces but they have been transported to the scope of real or complex Hausdorff locally convex topological vector spaces. In this manuscript, we extend them to the setting of topological vector spaces over an absolutely valued division ring by redefining them as pre-Schauder bases. We first prove that, if a topological vector space admits a pre-Schauder basis, then the linear span of the basis is Hausdorff and the series linear span of the basis minus the linear span contains the intersection of all neighborhoods of 0. As a consequence, we conclude that the coefficient functionals are continuous if and only if the canonical projections are also continuous (this is a trivial fact in normed spaces but not in topological vector spaces). We also prove that, if a Hausdorff topological vector space admits a pre-Schauder basis and is w*-strongly torsionless, then the biorthogonal system formed by the basis and its coefficient functionals is total. Finally, we focus on Schauder bases on Banach spaces proving that every Banach space with a normalized Schauder basis admits an equivalent norm closer to the original norm than the typical bimonotone renorming and that still makes the basis binormalized and monotone. We also construct an increasing family of left-comparable norms making the normalized Schauder basis binormalized and show that the limit of this family is a right-comparable norm that also makes the normalized Schauder basis binormalized
Las libertades pĂşblicas en TĂşnez tras las revueltas de 2011
Este artĂculo analiza los cambios legislativos relacionados con las libertades pĂşblicas en TĂşnez desde las revueltas de 2011, concretamente los referidos a la libertad de asociaciĂłn, expresiĂłn y la regulaciĂłn de los medios de comunicaciĂłn, poniĂ©ndolos en relaciĂłn con el contexto sociopolĂtico del paĂs. Ello pretende demostrar cĂłmo los factores sociales y polĂticos han generado un nuevo marco legal de actuaciĂłn, basado en la nueva ConstituciĂłn, pero con un intenso desarrollo normativo que en muchos aspectos rompe con la legislaciĂłn anterior, aunque conservando ciertos elementos de autoridad heredados del pasado. Dos aspectos merecen especial atenciĂłn: los lĂmites que estas nuevas normas siguen manteniendo como factor de control social y, no completamente acordes con una democracia desarrollada; y, por el otro, los problemas de interpretaciĂłn, las especificidades culturales o los comportamientos autoritarios que hacen que se mantenga la falta de libertades en ámbitos tan fundamentales como los analizados
A Highly Available Cluster of Web Servers with Increased Storage Capacity
Ponencias de las Decimoséptimas Jornadas de Paralelismo de la Universidad de Castilla-La Mancha celebradas el 18,19 y 20 de septiembre de 2006 en AlbaceteWeb servers scalability has been traditionally solved by improving software elements or increasing hardware resources of the server machine.
Another approach has been the usage of distributed
architectures. In such architectures, usually, file al-
location strategy has been either full replication or full distribution. In previous works we have showed that partial replication offers a good balance between storage capacity and reliability. It offers much higher
storage capacity while reliability may be kept at an equivalent level of that from fully replicated solutions.
In this paper we present the architectural details of Web cluster solutions adapted to partial replication.
We also show that partial replication does not imply a penalty in performance over classical fully replicated architectures. For evaluation purposes we have used a simulation model under the OMNeT++ framework and we use mean service time as a performance comparison metric.Publicad
Multiscale thermo-mechanical analysis of multi-layered coatings in solar thermal applications
Solar selective coatings can be multi-layered materials that optimize the solar absorption while reducing thermal radiation losses, granting the material long-term stability. These layers are deposited on structural materials (e.g., stainless steel, Inconel) in order to enhance the optical and thermal properties of the heat transfer system. However, interesting questions regarding their mechanical stability arise when operating at high temperatures. In this work, a full thermo-mechanical multiscale methodology is presented, covering the nano-, micro-, and macroscopic scales. In such methodology, fundamental material properties are determined by means of molecular dynamics simulations that are consequently implemented at the microstructural level by means of finite element analyses. On the other hand, the macroscale problem is solved while taking into account the effect of the microstructure via thermo-mechanical homogenization on a representative volume element (RVE). The methodology presented herein has been successfully implemented in a reference problem in concentrating solar power plants, namely the characterization of a carbon-based nanocomposite and the obtained results are in agreement with the expected theoretical values, demonstrating that it is now possible to apply successfully the concepts behind Integrated Computational Materials Engineering to design new coatings for complex realistic thermo-mechanical applications.Peer ReviewedPostprint (author's final draft
Wheelchair basketball : influence of shoulder pain in sport skills
Shoulder injuries are a common problem among wheelchair basketball players (WB). The purpose of this study was to detect the influence of shoulder pain (SP) in WB sport skills. Fifty-one WB players aged from 15 to 42 (21 females, 23, 86±1, 38 years and 30 males, 23, 90±1, 46 years) were evaluated. Shoulder Pain Index for Wheelchair Basketball (SPI-WB) was used to determine SP in relation to specific WB skills. Gender and age were compared using T-test and One Factor ANOVA, respectively. The level of significance was set at p≤0, 05. 27, 5% of the sample reported actual SP. Statistical analysis revealed a main effect for gender regarding SP during shooting skills, especially for females. There were no significant differences according to rebounding/one-handed long passes and other sport situations. In conclusion, SP could affect the specific activities of WB according to gender, especially during shooting in females, so ways to promote shoulder health must be develop.Las lesiones del hombro son un problema comĂşn entre los jugadores de baloncesto en silla de ruedas (BSR). El objetivo de este estudio fue detectar la influencia del dolor de hombro (DH) en las habilidades deportivas propias del BSR. 51 jugadores de BSR entre 15 y 42 (21 mujeres, 23, 86 ± 1, 38 años y 30 hombres, 23, 90 ± 1, 46 años) fueron evaluados. El Cuestionario del Dolor de Hombro en BSR se utilizĂł para determinar el DH en relaciĂłn a las habilidades especĂficas del BSR. El gĂ©nero y la edad se compararon mediante la prueba t y ANOVA de un factor, respectivamente. El nivel de significaciĂłn se estableciĂł en p≤0, 05. 27, 5% de la muestra informĂł SP en el momento del estudio. Los resultados muestran diferencias significativas de acuerdo al gĂ©nero en relaciĂłn con DH en habilidades como el tiro, especialmente para las mujeres. No hubo diferencias significativas en funciĂłn de realizar acciones de rebote y pases largos/una sola mano y otras situaciones propias del BSR. En conclusiĂłn, SP podrĂa afectar a las actividades especĂficas del BSR en funciĂłn del gĂ©nero, especialmente en las mujeres, por lo que se debe promover la salud del hombro
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