Fuzzy heterogeneous neurons for imprecise classification problems

In the classical neuron model, inputs are continuous real-valued quantities. However, in many important domains from the real world, objects are described by a mixture of continuous and discrete variables, usually containing missing information and uncertainty. In this paper, a general class of neuron models accepting heterogeneous inputs in the form of mixtures of continuous (crisp and/or fuzzy) and discrete quantities admitting missing data is presented. From these, several particular models can be derived as instances and different neural architectures constructed with them. Such models deal in a natural way with problems for which information is imprecise or even missing. Their possibilities in classification and diagnostic problems are here illustrated by experiments with data from a real-world domain in the field of environmental studies. These experiments show that such neurons can both learn and classify complex data very effectively in the presence of uncertain information.Peer ReviewedPostprint (author's final draft

Fuzzy heterogeneous neural networks for signal forecasting

Fuzzy heterogeneous neural networks are recently introduced models based on neurons accepting heterogeneous inputs (i.e. mixtures of numerical and non-numerical information possibly with missing data) with either crisp or imprecise character, which can be coupled with classical neurons. This paper compares the effectiveness of this kind of networks with time-delay and recurrent architectures that use classical neuron models and training algorithms in a signal forecasting problem, in the context of finding models of the central nervous system controllers.Peer ReviewedPostprint (author's final draft

Using fuzzy heterogeneous neural networks to learn a model of the central nervous system control

Fuzzy heterogeneous networks based on similarity are recently introduced feed-forward neural network models composed by neurons of a general class whose inputs are mixtures of continuous (crisp and/or fuzzy) with discrete quantities, admitting also missing data. These networks have activation functions based on similarity relations between inputs and neuron weights. They can be coupled with classical neurons in hybrid network architectures, trained with genetic algorithms. This paper compares the e ectivity of this fuzzy heterogeneous model based on similarity with the classical feed-forward one (scalar-product driven and using crisp quantities) in a time-series prediction setting. The results obtained show a remarkable increasing performance when departing from the classical neuron and a comparable one when confronted with other current powerful techniques, such as the FIR methodology.Peer ReviewedPostprint (author's final draft

Recent developments for the calculation of elastic and non-elastic breakup of weakly-bound nuclei

In this contribution, we review some recent theoretical advances for the calculation of breakup cross sections in reactions induced by weakly-bound nuclei.Ministerio de Economía y Competitividad FIS2013-41994-P, CSD2007-00042Junta de Andalucía FQM160, P07-FQM-02894European Commission 60037

Evaluación de la huella hídrica del sector agropecuario en la cuenca del Río Combeima : (Tolima, Colombia)

En la cuenca del río Combeima, se desarrollan actividades agrícolas y pecuarias que han deteriorado la calidad y disponibilidad del recurso hídrico, a tal punto que la cuenca ha sido considerada como una de las de mayor índice de escasez en la región. Para determinar el impacto de algunas de estas actividades, se evaluó la Huella Hídrica (HH), Azul (HA), Verde (HV) y Gris (HG) del sector agropecuario, mediante la aplicación de cuatro fases metodológicas para la evaluación de la HH en cuenca. Los resultados preliminares apuntan a que el sector pecuario es el que presenta los mayores valores de HH. Se definieron unos índices de sostenibilidad ambiental, los cuales determinaron que existe mayoritariamente un impacto sobre la calidad del agua. Preliminarmente, se estima que el uso de la HH como indicador de gestión permite conocer el “hotspot" del conflicto en el uso y la calidad del agua y definir el papel que juegan los diferentes actores en la resolución del mismo.In the Combeima river basin agricultural and livestock activities are being developed, these activities deteriorate the quality and availability of water resources, until the river basin has been considered one of the most scarce index in the region. To determine the impact of some of these activities, the water footprint (HH), Blue (HA), Green (HV) and Gray (HG) of the agricultural sector were evaluated through the application of four methodological phases for the evaluation of HH. Preliminary results suggest that the livestock sector represents the highest HH values. Environmental sustainability indexes were defined which determined that there is a greater impact on water quality. Preliminarily it is estimated that the use of HH as a management indicator, allows to know the “hotspot" of the conflict in the use and quality of water and to define the role played by the different actors in its resolution.Fil: Varón Vargas, Perla Tatiana . Universidad del Tolima (Colombia)Fil: Muñoz Ramos, Jader. Universidad del Tolima (Colombia)Fil: Guio Duque, Antonio José. Universidad del Tolima (Colombia

Pre-competitive anxiety in U12, U14 and U16 paddle tennis players

The main aim of this research is to analyze the level of precompetitive anxiety in female paddle players and male paddle players of Castilla y León in the categories U12, U14 and 16 before the beginning of the competition. Thus, 221 players participated in the study: 100 female athletes and 121 male athletes. The results showed that the level of self-confidence of athletes is higher than the levels obtained in the cognitive anxiety and somatic anxiety, respectively. In relation with the sex of the athletes, male players showed higher levels in self-confidence and somatic anxiety, while the female players counted higher on cognitive anxiety. Finally, depending on the category in which they compete, U12 players are those who have more confidence in themselves, whereas U16 players are those who counted higher in the variables of cognitive anxiety and somatic anxiety.El objetivo principal que se propone con este trabajo de investigación es analizar el nivel de ansiedad precompetitiva en los jugadores y las jugadoras de pádel de Castilla y León en las categorías alevín, infantil y cadete, en los minutos previos al comienzo de la competición. Para ello, participaron 221 jugadores: 100 deportistas de sexo femenino y 121 del sexo masculino. Los resultados demostraron que el nivel de autoconfianza de los deportistas es mayor que los niveles obtenidos en las variables ansiedad cognitiva y ansiedad somática, respectivamente. En relación con el sexo, los jugadores mostraron niveles superiores en autoconfianza y ansiedad somática, mientras las jugadoras puntuaron más alto en ansiedad cognitiva. Por último, en función de la categoría en la que compiten, los alevines son los que más confianza tienen en ellos mismos, mientras que los cadetes son los que puntuaron más alto en las variables de ansiedad cognitiva y ansiedad somática

Transfer induced by core excitation within an extended distorted-wave Born approximation method

Background: Dynamic core-excitation effects have been found to be of importance in breakup reactions and may be of relevance when obtaining spectroscopic information from transfer reactions. Purpose: In this paper we extend the distorted-wave Born approximation (DWBA) formalism in order to allow for noncentral components in the core-core term appearing in the transition operator, which allows for dynamic core-excitation effects. Then we study these effects by applying the formalism to different (d,p) reactions. Methods: The expression of the nonlocal kernels required for the evaluation of the DWBA amplitudes has been extended so as to include noncentral parts in the core-core interaction. The DWBA scattering amplitude is then obtained by solving the corresponding inhomogeneous equation, with the new computed kernels, and the usual outgoing boundary conditions. A new DWBA code has been developed for this purpose. Results: For Be10(d,p)Be11, core-excitation effects are found to be almost negligible (<3%). The importance of this effect has been found to depend to a large extent on the excitation energy of the core. This has been confirmed in the Ne30(d,p)Ne31 case, for which the excitation energy of the first 2+ state is 0.8 MeV, and the effect of core excitation increases to ≈10%. Conclusions: We find dynamic core-excitation effects in transfer reactions to have small contributions to cross sections, in general. However, they should not be neglected, since they may modify the spectroscopic information obtained from these reactions and may become of importance in reactions with nuclei with a core with high deformation and low excitation energy.Junta de Andalucía FQM160 P07-FQM-02894Ministerio de Economía y Competitividad (España) FPA-2013-47327-C02-01-RPrograma Consolider-Ingenio 2010 (España) CSD2007-00042 FPA2009- 0765

Female Spanish athletes face pre-competition anxiety at the highest levels of competition

Pre-competition anxiety is one of the most common emotions experienced among athletes in high performance sport. It can cause both positive and negative effects, which makes the ability to manage this anxiety one of the most important parts of an athlete's preparation. This study analyzes the anxiety levels in athletes from the Spanish Women's National Track & Field Team who participated in the European Championships, the World Championships, and the Olympic Games. The study evaluates how these athletes cope with pre-competition anxiety by examining three variables in the moments prior to the competition-cognitive anxiety, self-confidence, and somatic anxiety-and the way these variables impacted the results achieved by these athletes. The study indicates that a significant difference exists between cognitive anxiety and self-confidence, which shows that the higher an athlete's self-confidence, the lower the levels of cognitive anxiety. Higher levels of self-confidence and lower levels of cognitive anxiety were also shown to have a positive impact on performance results.La ansiedad precompetitiva es una de las emociones más generalizadas en el deporte de alto rendimiento deportivo. Provoca efectos tanto positivos como negativos, por lo que el control de la misma es uno de los objetivos más importantes dentro de la preparación del atleta de alto nivel. El objeto de este estudio es analizar los niveles de ansiedad en las atletas españolas del equipo nacional de atletismo que participan en la máxima competición tanto a nivel español como en campeonatos de Europa, del Mundo y Juegos Olímpicos. Se realizó un estudio desde la perspectiva de cómo afrontan las atletas españolas la ansiedad precompetitiva a partir de las variables ansiedad cognitiva, autoconfianza y ansiedad somática, y la manera en que estas tres variables inciden en el resultado obtenido por las atletas españolas en el momento previo a la competición. Los resultados obtenidos muestran diferencias significativas entre la ansiedad cognitiva y la autoconfianza, lo que provoca que, a mayores niveles de autoconfianza, los niveles de ansiedad cognitiva sean menores. Esto les permite evitar los signos negativos que causa la ansiedad cognitiva, con lo que esta no afecta a su rendimiento

Efecto agudo del chaleco lastrado sobre la condición física del portero de fútbol

There are few studies related to the physical condition of young soccer goalkeepers. The aim of the study is to analyze the acute effect on the goalkeeper's physical condition through a session by wearing a weight-bearing vest at 5% of body weight. The variables analyzed are explosive strength (SJ and CMJ) through the application "My Jump" and the agility test Lloureq (Llopis, Ulloa &amp; Requena, 2010) adapted. A session with a weight-bearing vest is carried out at 5% of his body weight, on 6 young goalkeepers of high sporting skill, with a mean age of 16.17 (± 1.17 years). The main results show that there are no significant differences between the pretest and posttest SJ and CMJ force levels, however, there are significant differences (p &lt;.05) in the other variables analyzed in relation to specific agility and technical elements Specific to the goalkeeper. The use of the ballast vest with acute effect can be considered as a good training material specific to the goalkeeper of soccer.Son pocos los estudios relacionados con la condición física de los porteros jóvenes de fútbol. El objetivo del estudio es analizar el efecto agudo sobre la condición física del portero a través de una sesión mediante el empleo de un chaleco lastrado al 5% del peso corporal. Las variables analizadas son fuerza explosiva (SJ y CMJ) a través de la aplicación “My Jump” y el test de agilidad Lloureq (Llopis, Ulloa &amp; Requena, 2010) adaptado. Se realiza una sesión con chaleco lastrado al 5% de su peso corporal, sobre 6 porteros jóvenes de alta pericia deportiva, con una media de edad de 16.17 (±1.17 años). Los principales resultados muestras que no existen diferencias significativas entre los niveles de fuerza SJ y CMJ pretest y postest, sin embargo sí que existen diferencias significativas (p &lt;.05) en el resto de variables analizadas en relación a la agilidad específica y los elementos técnicos específicos del portero de fútbol. El uso del chaleco lastrado con efecto agudo se puede considerar como un buen material de entrenamiento específico del portero de fútbol