Search results for "H1"
showing 10 items of 1219 documents
El reto del conocimiento en la practica del Trabajo Social
2005
En el presente artículo se pretende subrayar la importancia de que desde el Trabajo Social y la Educación Social se profundice en el conocimiento y la utilización de las Tecnologías de la Información y la Comunicación (TIC) como recurso y requisito para la intervención socioeducativa. Unas tecnologías que cada vez ostentan un mayor protagonismo en nuestra sociedad y ante las que, además, es preciso constituir una adecuada respuesta desde las entidades que habrán de asumir, tarde o temprano, la responsabilidad de atender las nuevas situaciones de exclusión a las que se podrán ver sometidos aquellos que no tengan posibilidad de acceder a ellas. En este sentido, se destaca la necesidad de que …
Un grupo sobre el grupo de discusión. Entre la lógica instrumental y el eterno retorno a la sociología crítica
2016
El texto presenta una reunión grupal sobre la evolución de los usos en la técnica del grupo de discusión y, en general, en la investigación cualitativa; desde el trabajo de campo, captación, transcripción hasta el análisis de los discursos y la redacción de informes de investigación. Dicha discusión se enmarca en el contexto social e histórico actual, por lo que la perspectiva se ve atravesada no sólo por los cambios en los usos de la técnica y, de manera genérica, en la investigación cualitativa, sino también por los cambios de discursos sociales. La característica que homogeneiza a los/as participantes de dicho grupo es que todos ellos/as utilizan el grupo de discusión como técnica en sus…
Perceived Corruption and Individuals’ Life Satisfaction: The Mediating Role of Institutional Trust
2018
Corruption degrades the quality of institutions, increases economic inequality and limits growth. Recent studies indicate that corruption is also associated with lower satisfaction with life. This research examines a potential explanation for this association and investigates the role of institutional trust in mediating the linkage between perceived corruption and satisfaction with life. Specifically, in two studies, we tested the novel hypothesises that perceived corruption affects life satisfaction indirectly by undermining individuals’ confidence in institutions. Study 1 (N = 251) involved an opportunity sample from the US. Study 2 (N = 9508) analysed data from the World Value Survey and…
¿Se han hecho más democráticos los partidos en España? La evolución en las reglas de elección del líder (1977-2008)
2011
En este trabajo, los autores verifican si, entre 1977 y 2008, ha habido un aumento de la democracia interna en los principales partidos políticos españoles. Para ello, analizan el proceso de selección del líder, al tiempo que cuestionan si ha habido un incremento de la igualdad en la participación para elegirlo, favoreciendo sistemas representativos o de elección directa. El artículo plantea también la hipótesis de si el grado de igualdad en las reglas de la elección influye en el grado de competencia en la lucha por el liderazgo del partido. Para comprobar tal supuesto, los autores examinan las condiciones de elegibilidad así como la representatividad del cuerpo electoral que escoge al líd…
Economic Evaluation of Health Services Costs During Pandemic Influenza A (H1N1) Pdm09 Infection in Pregnant and Non-Pregnant Women in Spain
2016
Background: The healthcare and socio-economic burden resulting from influenza A (H1N1) pdm09 in Spain was considerable. Our aim was to estimate and compare the management (resource utilization) and economic healthcare impact in an at-risk group of unvaccinated pregnant women with an unvaccinated group of non-pregnant woman of childbearing age (15-44 yr old). Methods: We addressed this question with a longitudinal, observational, multicentre study. Inputs were the requirements in managing both groups of women. Outcome measures were healthcare costs. Direct healthcare (including medical utilisation, prescriptions of antivirals, medication, diagnostic tests, and hospitalisation) costs and indi…
Staring: how we look
2010
Staring: how we look, by Rosemarie Garland-Thomson, New York, Oxford University Press, 2009, 244 pp., US$24.95 (paperback), ISBN 978-0-195-32680-2 I have always been a starer. People have reminded ...
Statistics of nonlinear stochastic dynamical systems under Lévy noises by a convolution quadrature approach
2010
This paper describes a novel numerical approach to find the statistics of the non-stationary response of scalar non-linear systems excited by L\'evy white noises. The proposed numerical procedure relies on the introduction of an integral transform of Wiener-Hopf type into the equation governing the characteristic function. Once this equation is rewritten as partial integro-differential equation, it is then solved by applying the method of convolution quadrature originally proposed by Lubich, here extended to deal with this particular integral transform. The proposed approach is relevant for two reasons: 1) Statistics of systems with several different drift terms can be handled in an efficie…
Weighted bounded mean oscillation applied to backward stochastic differential equations
2015
Abstract We deduce conditional L p -estimates for the variation of a solution of a BSDE. Both quadratic and sub-quadratic types of BSDEs are considered, and using the theory of weighted bounded mean oscillation we deduce new tail estimates for the solution ( Y , Z ) on subintervals of [ 0 , T ] . Some new results for the decoupling technique introduced in Geiss and Ylinen (2019) are obtained as well and some applications of the tail estimates are given.
Mean square rate of convergence for random walk approximation of forward-backward SDEs
2020
AbstractLet (Y,Z) denote the solution to a forward-backward stochastic differential equation (FBSDE). If one constructs a random walk$B^n$from the underlying Brownian motionBby Skorokhod embedding, one can show$L_2$-convergence of the corresponding solutions$(Y^n,Z^n)$to$(Y, Z).$We estimate the rate of convergence based on smoothness properties, especially for a terminal condition function in$C^{2,\alpha}$. The proof relies on an approximative representation of$Z^n$and uses the concept of discretized Malliavin calculus. Moreover, we use growth and smoothness properties of the partial differential equation associated to the FBSDE, as well as of the finite difference equations associated to t…
Rough linear PDE's with discontinuous coefficients - existence of solutions via regularization by fractional Brownian motion
2020
We consider two related linear PDE's perturbed by a fractional Brownian motion. We allow the drift to be discontinuous, in which case the corresponding deterministic equation is ill-posed. However, the noise will be shown to have a regularizing effect on the equations in the sense that we can prove existence of solutions for almost all paths of the fractional Brownian motion.