Live demonstration: Neuro-inspired system for realtime vision tilt correction

Correcting digital images tilt needs huge quantities of memory, high computational resources, and use to take a considerable amount of time. This demonstration shows how a spikes-based silicon retina dynamic vision sensor (DVS) tilt can corrected in real time using a commercial accelerometer. DVS output is a stream of spikes codified using the address-event representation (AER). Event-based processing is focused on change in real time DVS output addresses. Taking into account this DVS feature, we present an AER based layer able to correct in real time the DVS tilt, using a high speed algorithmic mapping layer and introducing a minimum latency in the system. A co-design platform (the AER-Robot platform), based into a Xilinx Spartan 3 FPGA and an 8051 USB microcontroller, has been used to implement the system

Neuro-inspired system for real-time vision sensor tilt correction

Neuromorphic engineering tries to mimic biological information processing. Address-Event-Representation (AER) is an asynchronous protocol for transferring the information of spiking neuro-inspired systems. Currently AER systems are able sense visual and auditory stimulus, to process information, to learn, to control robots, etc. In this paper we present an AER based layer able to correct in real time the tilt of an AER vision sensor, using a high speed algorithmic mapping layer. A codesign platform (the AER-Robot platform), with a Xilinx Spartan 3 FPGA and an 8051 USB microcontroller, has been used to implement the system. Testing it with the help of the USBAERmini2 board and the jAER software.Junta de Andalucía P06-TIC-01417Ministerio de Educación y Ciencia TEC2006-11730-C03-02Ministerio de Ciencia e Innovación TEC2009-10639-C04-0

El concepto de creatividad en la educación física

Desde un punto de vista histórico, la emotividad ha sido expuesta como el gran objetivo de todo proceso educativo. Sin embargo, abordando la realidad "creatividad" desde ángulos de una filosofía crítica, esta realidad puede aparecer: 1) como un concepto indeterminado en sí mismo, 2) como una realidad conceptual, 3) como una consecuencia del desarrolla profundo de la personalidad. La crítica de las dos primeras acepciones pertenece al ámbito de una filosofía metafísica, que abordaré sólo como punto dialéctico de referencia. La tercera acepción enclavada en un ámbito de filosofía psicológica, es el tema origen de este trabajo que desarrollaré según el esquema siguiente: a) Análisis de los factores determinantes de la creatividad. b) Descripción de experiencias. c) Posibilidades de desarrollo en la Educación Física. Mi postura ante este desarrollo se asienta deliberadamente sobre bases descriptivas y empíricas, intentando el análisis de la realidad “creatividad" a partir de un análisis crítico de lo que considero como factores determinantes del concepto real de creatividad

Relevance of Gastronomy in the Tourism of a World Heritage Site: The Case of Sucre (Bolivia)

Recently, gastronomy has become one of the most important tourist attractions for cities as well as for rural areas. In this respect, tourists look for authenticity in the gastronomy heritage of these destinations, making it, thusly, a motivation for visiting the place. This research presents a segmentation of the tourists who visit Sucre (Bolivia), on the basis of a higher or lower interest in the gastronomy of the city. The results extracted from the research highlight the existence of three tourist segments with different attitudes regarding gastronomic experiences. Additionally, it notes the importance that a specific type of tourist places on discovering and better understanding the gastronomy of a city as part of its cultural heritage

Making profiles in boys and girls playing basketball = Perfiles decisionales en niños y niñas de baloncesto

Decision-making in players of sports such as basketball is essential to the sport activity itself. For this reason, decision-making is being researched in sports from a range of approaches and angles. The focus of this study is on understanding the decision-making profiles of basketball playing boys and girls (n=63), aged between 10 and 12. They belong to a basketball school with a distinct educational philosophy and an internal competition style that favour educational values required in sports at the initial stages. A descriptive study was conducted by applying a questionnaire on decision-making styles in sports (CETD). The questionnaire results according to the three analysed parameters are as follows: perceived decisional competence, M=2.26 ± 0.2. Anxiety and feeling overwhelmed when making decisions, M=2.36 ± 0.3. Tactical learning commitment, M=3.43 ± 0.3. These results have allowed the acquisition of greater knowledge about the players being analysed in terms of their perception on how they make decisions in training and competition, thus allowing the application of certain teaching strategies, enabling them to progress in basketball skills. ----------RESUMEN---------- La toma de decisiones de los jugadores en deportes como el baloncesto, es consustancial al propio deporte. Por este motivo, la decisión es objeto de investigación en el ámbito deportivo, abordándola desde diferentes enfoques y perspectivas. El objetivo de este estudio ha sido conocer el perfil decisional de un grupo de niños y niñas que practican baloncesto (n=63), con edades comprendidas entre los 10 y 12 años. Pertenecen a una escuela de baloncesto con una marcada filosofía educativa y un tipo de competición interna favorecedora de los valores educativos necesarios para la práctica deportiva en las etapas de iniciación. Se realizó un estudio descriptivo aplicando el cuestionario de estilos al decidir en el deporte (CETD). Los resultados obtenidos según las tres dimensiones analizadas del cuestionario fueron: competencia decisional percibida, M=2.26 ± 0.2. Ansiedad y agobio al decidir, M=2.36 ± 0.3. Compromiso en el aprendizaje táctico, M=3.43 ± 0.3. Estos resultados han permitido obtener mayor conocimiento de los jugadores y jugadoras analizados en cuanto a su percepción sobre cómo deciden en el entrenamiento y la competición y, de este modo, poder aplicar determinadas estrategias didácticas que les permita progresar en el aprendizaje del baloncesto

Feasibility Study of a Proton Irradiation Facility for Radiobiological Measurements at an 18 MeV Cyclotron

A feasibility study of an experimental setup for the irradiation of biological samples at the cyclotron facility installed at the National Centre of Accelerators (Seville, Spain) is presented. This cyclotron, which counts on an external beam line for interdisciplinary research purposes, produces an 18 MeV proton beam, which is suitable for the irradiation of mono-layer cultures for the measurement of proton cell damages and Relative Biological Effectiveness (RBE) at energies below the beam nominal value. Measurements of this kind are of interest for proton therapy, since the variation of proton RBE at the distal edge of the Bragg curve may have implications in clinical proton therapy treatments. In the following, the characteristics of the beam line and the solutions implemented for the irradiation of biological samples are described. When dealing with the irradiation of cell cultures, low beam intensities and broad homogeneous irradiation fields are required, in order to assure that all the cells receive the same dose with a suitable dose rate. At the cyclotron, these constraints have been achieved by completely defocusing the beam, intercepting the beam path with tungsten scattering foils and varying the exit-window-to-sample distance. The properties of the proton beam thus obtained have been analysed and compared with Monte Carlo simulations. The results of this comparison, as well as the experimental measurement of the lateral dose profiles expected at the position of samples are presented. Meaningful dose rates of about 2–3 Gy/min have been obtained. Homogeneous lateral dose profiles, with maximum deviations of 5%, have been measured at a distance of approximately 50 cm in air from the exit window, placing a tungsten scattering foil of 200 μm in the beam path

Utilización de materiales didácticos para fomentar valores educativos en baloncesto de formación

Con la intención de promover la enseñanza y aprendizaje del baloncesto desde una perspectiva educativa en las etapas de formación, las Escuelas de Baloncesto de la Fundación Real Madrid, a través del proyecto de investigación denominado “Por una Educación REAL: Valores y Deporte”, ha elaborado una serie de materiales didácticos que permitan ayudar a los entrenadores y jugadores a desarrollar la práctica del baloncesto en el mejor contexto educativo. Dichos materiales ofrecen a los entrenadores la posibilidad de mejorar su calidad como docentes, tanto en los entrenamientos como la competición, incluyendo los valores educativos en la práctica diaria, haciendo también partícipes a los jugadores y sus familias. El objetivo principal de este estudio, después de varias temporadas de desarrollo del proyecto, ha sido analizar el uso que los entrenadores hacen de los diferentes materiales didácticos

R353Q polymorphism in the factor VII gene and cardiovascular risk in Heterozygous Familial Hypercholesterolemia: a case-control study

<p>Abstract</p> <p>Background</p> <p>Heterozygous Familial Hypercholesterolemia (FH) is a genetic disorder characterized by a high risk of cardiovascular disease. Certain polymorphisms of the factor VII gene have been associated with the development of coronary artery disease and there is a known association between factor VII levels and polymorphic variants in this gene. To date, no study has evaluated the association between factor VII and coronary artery disease in patients with FH.</p> <p>Results</p> <p>This case-control study comprised 720 patients (546 with FH and 174 controls). We determined the prevalence and allele frequencies of the R353Q polymorphism of factor VII, the plasma levels of factor VII antigen (FVII Ag) and whether they could be predictive factors for cardiovascular risk. 75% (410) of the patients with FH were RR, 23% (127) RQ and 1.6% (9) QQ; in the control group 75.3% (131) were RR, 21.3% (37) RQ and 3.4% (6) QQ (p = 0.32). No statistically significant associations were observed in the distribution of genotypes and allele frequencies between case (FH) and control groups. Nor did we find differences when we evaluated the relationship between the R353Q polymorphism and cardiovascular risk (including coronary disease, ischemic stroke and peripheral arterial disease), either in the univariate analysis or after adjustment for sex, age, arterial hypertension, body mass index, xanthomas, diabetes, smoking, HDLc and LDLc and lipid-lowering treatment. The FVII Ag concentrations behaved in a similar fashion, with no differences for the interaction between controls and those with FH (RR vs. RQ/QQ; p = 0.96). In the subgroup of patients with FH no association was found among cardiovascular disease, genotype and FVII Ag levels (RR vs. RQ/QQ; p = 0.97).</p> <p>Conclusions</p> <p>Our study did not find a direct relationship between cardiovascular risk in patients with Heterozygous Familial Hypercholesterolemia, the R353Q polymorphism of factor VII and FVII Ag levels.</p