La 1ª Conferencia Internacional sobre educación y formación en geociencias

Depto. de Mineralogía y PetrologíaFac. de Ciencias GeológicasFALSEpu

On the effect of low blowing ratio continuous jets on wingtip vortex characteristics

Vortices are an unavoidable effect of flight, which appear behind the wing with a bounded length. The strength of these vortices, which are extremely stable, is due to the lift force [1]. That is the reason why this phenomenon is especially relevant during take-off and landing operations. In these situations, when aircraft are departing from or arriving to the airport runways, the following aircraft might feel two counter-rotating vortices which remain long time under normal environmental conditions. Unfortunately, this huge rotation of airflow patterns always destabilizes the following aircraft. Consequently, trailing vortices have a mighty influence on the air traffic control of airport runways, and they have justified the research interest in this topic since the 1960's [2]. However, aeronautical engineers are still searching for different technological strategies to breakdown these wingtip vortices.Short-Term Postdoctoral Stay of Talent Attraction Plan of Andalucía TECH ICE. Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tec

Chicxulub-Decán: ¿Una conspiración contra los dinosaurios?

La reciente publicación de un artículo (Richards et al., 2015) en el que se propone que el impacto de Chicxulub desencadenó una fase paroxísmica de vulcanismo en la meseta del Decán (India) ha vuelto a poner de actualidad la confrontación entre las dos hipótesis que intentan explicar la extinción masiva sucedida en el límite Cretácico/Paleógeno (K/Pg)

On the optimaL response of q-vortex

Wingtip vortices represent a hazard for the stability of the following airplane in airport highways. These flows have been usually modeled as swirling jets/wakes, which are known to be highly unstable and susceptible to breakdown at high Reynolds numbers for certain flow conditions, but different to the ones present in real flying airplanes. A very recent study based on Direct Numerical Simulations (DNS) shows that a large variety of helical responses can be excited and amplified when a harmonic inlet forcing is imposed. In this work, the optimal response of q-vortex (both axial vorticity and axial velocity can be modeled by a Gaussian profile) is studied by considering the time-harmonically forced problem with a certain frequency ω. We first reproduce Guo and Sun’s results for the Lamb-Oseen vortex (no axial flow) to validate our numerical code. In the axisymmetric case m = 0, the system response is the largest when the input frequency is null. The axial flow has a weak influence in the response for any axial velocity intensity. We also consider helical perturbations |m| = 1. These perturbations are excited through a resonance mechanism at moderate and large wavelengths as it is shown in Figure 1. In addition, Figure 2 shows that the frequency at which the optimal gain is obtained is not a continuous function of the axial wavenumber k. At smaller wavelengths, large response is excited by steady forcing. Regarding the axial flow, the unstable response is the largest when the axial velocity intensity, 1/q, is near to zero. For perturbations with higher azimuthal wavenumbers |m| > 1, the magnitudes of the response are smaller than those for helical modes. In order to establish an alternative validation, DNS has been carried out by using a pseudospectral Fourier formulation finding a very good agreement.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

El transporte urbano sostenible: revisión de las medidas implantadas en las ciudades españolas integradas en la iniciativa CIVITAS. Comparación con las medidas establecidas en la ciudad de Madrid

El presente trabajo pretende ofrecer una aproximación sobre el panorama que presenta España en materia de transporte urbano sostenible. En primer lugar, hemos partido como base de nuestro estudio, de las directrices sobre movilidad urbana sostenible, que la Comisión Europea plantea a través de la Comunicación de 25 de septiembre de 2007, COM(2007) 551 FINAL “Libro Verde: Hacia una nueva cultura de la movilidad urbana” donde plantea una estrategia común a seguir por los países miembros a fin de resolver cinco grandes grupos de problemas que afectan a una movilidad urbana sostenible en el ámbito de las ciudades europeas. En segundo lugar, y considerando la premisa fundamental que plantea el Libro Verde respecto a que cualquier estrategia en esta materia sólo tendrá éxito si se adoptan y aplican una medidas concretas por parte de las autoridades locales, hemos centrado nuestro estudio en el análisis de las medidas propuestas por la Unión Europea en materia de transporte urbano sostenible, materializada en la iniciativa CIVITAS. Dentro de este programa y participando en distintas convocatorias, se encuentran ciudades españolas como Barcelona, Burgos, Vitoria-Gasteiz y Donostia-San Sebastián sobre las que hemos efectuado un estudio particularizado de las medidas en materia de transporte urbano sostenible que nos permita apreciar la situación actual en el ámbito nacional para las ciudades participantes. Por último, centrando nuestra atención en la ciudad de Madrid y teniendo en cuenta que recientemente se ha publicado el “Primer informe de estado de la movilidad de la ciudad de Madrid” (23 de febrero de 2009) para el periodo 2006-2008, hemos efectuado un análisis de las medidas implantadas de acuerdo a los indicadores generales y sectoriales que afectan al transporte urbano sostenible, con el objeto de comparar la situación actual que presenta el transporte urbano madrileño respecto a las medidas llevadas a cabo por parte de las ciudades españolas que se han acogido a las distintas iniciativas CIVITAS. Nuestro trabajo se ha centrado exclusivamente en el estudio de las medidas instauradas en proyectos de la iniciativa CIVITAS, así como de las establecidas en el Ayuntamiento de Madrid, sin considerar el problema de su financiación, cuestión que analizaremos en futuros trabajos.This paper aims to provide an approximation of the picture that presents Spain as regards urban transport systems. First, we start as the basis of our study of the guidelines for sustainable urban mobility, published by the European Commission like “Green Paper: Towards a new culture of urban mobility "which poses a common strategy to be followed by member countries to resolve five major groups of problems that affect sustainable urban mobility in European cities. Secondly, considering the basic premise is that the Green Paper with regard to any strategy in this area will only be successful if they adopt and implement a concrete action by the local authorities; we have focused our study on analysis of measures proposed by the European Union on sustainable urban transport, materialized in the CIVITAS initiative. Within this program and participating in various calls are Spanish cities like Barcelona, Burgos, Vitoria-Gasteiz and San Sebastian on which we made a study of the particularized measures regarding urban transport systems to enable us to assess the situation present at the national level for the participating cities. Finally, by focusing our attention on the city and taking into account recent has published the "First report of status of mobility in the city of Madrid" for the period 2006-2008, we conducted an analysis of the measures implemented under the overall and sectorial impact sustainable urban transport, in order to compare the current situation shows that urban transport of Madrid regard to measures taken by the Spanish cities that have benefited from various initiatives CIVITAS

Introducción a la colonización y repartimiento de la Sierra de Jaén en el siglo XVI

Artículo de la sección: EstudiosDepartamento de Historia Moderna y de América, Universidad de Granada

Implementación de comportamientos sociales para robots móviles

A lo largo de este proyecto se estudia, desarrolla e implementa una serie de algoritmos que doten a un robot móvil de un comportamiento más cercano a algunos de los estándares sociales más aceptados. El código que dota al robot de dicho comportamiento está escrito en C++ usando ROS. El proyecto se ha desarrollado en el entorno de simulación CoppeliaSim, capaz de incluir personas en la escena para poder realizar todas las pruebas. En el proyecto se implementan una serie de nodos agrupados en un paquete que ejecutan los distintos algoritmos que afectan al comportamiento del robot reduciendo su velocidad, haciendo que mantenga las distancias o evitando que cruce entre dos personas que mantienen una conversación

Predictors of optimal pharmacological treatment in patients with heart failure and depressed ejection fraction. Results of the VIDA-IC study

Abstrac

Quality of anticoagulation with vitamin K antagonists

[Abstract] Background. Vitamin K antagonists (VKA) have a narrow therapeutic range, and literature analysis reveals poor quality of anticoagulation control. We sought to assess the prevalence of poor anticoagulant control in patients under VKA treatment in the prevention of stroke for atrial fibrillation (AF). Hypothesis.Control of anticoagulation with VKA is inadequate in a high percentage of patients with AF. Methods.Patients with AF under VKA treatment were prospectively recruited in this observational registry. The sample comprised 948 patients. The estimated time spent in the therapeutic range (TTR) was calculated, and variables related with a TTR >65% were analyzed. Results.Mean age was 73.8 ± 9.4 years, and 42.5% of the patients were women. Mean TTR was 63.77% ± 23.80% for the direct method and 60.27% ± 24.48% for the Rosendaal method. Prevalence of poor anticoagulation control was 54%. Variables associated with good anticoagulation control were university studies (odds ratio [OR]: 1.99, 95% confidence interval [CI]: 1.08-3.64), chronic hepatic disease (OR: 8.15, 95% CI: 1.57-42.24), low comorbidity expressed as Charlson index (OR: 0.87, 95% CI: 0.76-0.99), no previous cardiac disease (OR: 0.64, 95% CI: 0.41-0.98), lower risk of bleeding assessed as hypertension, abnormal renal/liver function, stroke, bleeding history or predisposition, labile international normalized ratio, elderly age, and use of drugs or alcohol (HAS-BLED; OR: 0.81, 95% CI: 0.69-0.95), and lower heart rate (OR: 0.99, 95% CI: 0.98-0.99). Conclusions.Patients who receive VKA to prevent stroke for AF spend less than half the time within therapeutic range.Instituto de Salud Carlos III; RD12/0042/0068Instituto de Salud Carlos III; RD12/0042/0010Instituto de Salud Carlos III; RD12/0042/0069Instituto de Salud Carlos III; RD12/0042/0049Instituto de Salud Carlos III; RD12/0042/006