5,256 research outputs found
Timber roof structure for outdoor auditorium in Parque Paraiso, San Blas (Madrid)
p. 468-475A timber shell structure is designed to provide covering for an outdoor auditorium in
Madrid (Spain). The covering comprises five independent overlapped marquees with
similar shape but diverse dimensions. The surface geometry of each marquee is defined by a hyperbolic paraboloid, with its boundaries delimited by elliptical curves in horizontal
projection. Structural section for the timber shell is a composite section with several
staggered layers of straight sawn timber planks, arranged in two orthogonal directions
following the straight skew lines of the hyperbolic paraboloid. Over them two continuous
top layers are arranged which provides bracing for the structure and support for the
waterproofing material. Each layer is laid over the previous one, bolted and glued with
polyurethane adhesive. Special characteristics of the design analysis and detailed erection process are described. The designed solution provides lightweight roofing with a powerful and original image, short construction time and reasonable budget.Anton, A.; Meijide, AG.; Corbal, JJ. (2009). Timber roof structure for outdoor auditorium in Parque Paraiso, San Blas (Madrid). Editorial Universitat Politècnica de València. http://hdl.handle.net/10251/653
Estudio de vulnerabilidad sĂsmica del Hospital Fernando VĂ©lez Paiz
El área investigada al Noroeste de la ciudad de Managua (Anexo: figura 19), se sitĂşa en terreno plano sobre el cuál se emplaza el Hospital VĂ©lez Paiz, siendo la mayorĂa de sus estructuras de mamposterĂa confinada (80% del total evaluado). Dichas estructuras, fueron construidas con materiales de exigua calidad estructural, cuyos daños fĂsicos se evidencian despuĂ©s del sismo de Octubre del 2004, tambiĂ©n divulgados en diferentes diarios escritos y cadenas televisoras del paĂ
Particle methods parallel implementations by GP-GPU strategies
This paper outlines the problems found in the parallelization of SPH (Smoothed Particle Hydrodynamics) algorithms using Graphics Processing Units. Different results of some parallel GPU implementations in terms of the speed-up and the scalability compared to the CPU sequential codes are shown. The most problematic stage in the GPU-SPH algorithms is the one responsible for locating neighboring particles and building the vectors where this information is stored, since these specific algorithms raise many dificulties for a data-level parallelization. Because of the fact that the neighbor location using linked lists does not show enough data-level parallelism, two new approaches have been pro- posed to minimize bank conflicts in the writing and subsequent reading of the neighbor lists. The first strategy proposes an efficient coordination between CPU-GPU, using GPU algorithms for those stages that allow a straight forward parallelization, and sequential CPU algorithms for those instructions that involve some kind of vector reduction. This coordination provides a relatively orderly reading of the neighbor lists in the interactions stage, achieving a speed-up factor of x47 in this stage. However, since the construction of the neighbor lists is quite expensive, it is achieved an overall speed-up of x41. The second strategy seeks to maximize the use of the GPU in the neighbor's location process by executing a specific vector sorting algorithm that allows some data-level parallelism. Al- though this strategy has succeeded in improving the speed-up on the stage of neighboring location, the global speed-up on the interactions stage falls, due to inefficient reading of the neighbor vectors. Some changes to these strategies are proposed, aimed at maximizing the computational load of the GPU and using the GPU texture-units, in order to reach the maximum speed-up for such codes. Different practical applications have been added to the mentioned GPU codes. First, the classical dam-break problem is studied. Second, the wave impact of the sloshing fluid contained in LNG vessel tanks is also simulated as a practical example of particle method
New 3d SCFT's with scaling
We construct several novel examples of 3d models whose free
energy scales as at large . This is the first step towards the
identification of field theories with an M-theory dual. Furthermore, we match
the volumes extracted from the free energy with the ones computed from the
Hilbert series. We perform a similar analysis for the 4d parents of the 3d
models, matching the volume extracted from the conformal anomaly to that
obtained from the Hilbert series. For some of the 4d models, we show the
existence of a Sasaki-Einstein metric on the internal space of the candidate
type IIB gravity dual.Comment: 33+34 pages, 4 appendices, 7 figures, 3 tables; v2: references added,
minor corrections; v3: version published in JHE
eatris the european research infrastructure for translational medicine and a_iatris its italian node
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Policy and planning of prevention in Italy: results from an appraisal of prevention plans developed by Regions for the period 2010-2012
Health policies on disease prevention differ widely between countries. Studies suggest that different countries have much to learn from each other and that significant health gains could be achieved if all countries followed best practice. This paper describes the policy development and planning process relating to prevention activities in Italy, through a critical appraisal of Regional Prevention Plans (RPPs) drafted for the period 2010-2012. The analysis was performed using a specific evaluation tool developed by a Scientific Committee appointed by the Italian Ministry of Health. We appraised nineteen RPPs, comprising a total of 702 projects, most of them in the areas of universal prevention (62.9%) and prevention in high risk groups (27.0%). Italian Regions established prevention activities using an innovative combination of population and high-risk individuals approaches. However, some issues, such as the need to reduce health inequalities, were poorly addressed. The technical drafting of RPPs required some improvement; e.g. the evidence of the effectiveness and cost-effectiveness of the health interventions proposed was seldom reported. There were significant geographical differences across the Regions in the appraisal of RPPs. Our research suggests that continuous assessment of the planning process of prevention may become a very useful tool for monitoring, and ultimately strengthening, public health capacity in the field of prevention. Further research is needed to analyze determinants of regional variation
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