Sociedad Española de Psicooncología (SEPO)

Sin resume

The historical evolution of the musical programs in the Spanish televisión: From the programs of musical spreading to the talent shows

Esta investigación tiene como objetivo evaluar las narrativas y formatos predominantes en los programas musicales en la televisión española desde 1970 hasta hoy. La metodología combina la elaboración de un censo con técnicas cualitativas, a partir de entrevistas a expertos relacionados con el mundo de la música y la televisión. Los resultados apuntan a un predominio del talent show desde el año 2001, que puede ser explicado en clave de la rentabilidad y el interés por contenidos no estrictamente musicales. Esto ha impuesto ciertos patrones de gustos en la población, que han convertido al talent show en el formato musical predominante.This research tries to evaluate the narratives and predominant formats in the musical programs in the Spanish television from 1970 up to nowadays. The methodology combines the production of a census and qualitative tactics, like interview experts related to the world of the music and the television. The results point at a predominance of the talent show from the year 2001. It is because of profitability and the interest by not strictly musical contents. This has imposed some new interests in the population. Finally, the talent show has been converted into the musical predominant format today

Bounds on Quantile Treatment Effects of Job Corps on Participants' Wages

This paper assesses the effect of the U.S. Job Corps (JC), the nation's largest and most comprehensive job training program targeting disadvantaged youths, on wages. We employ partial identification techniques and construct informative nonparametric bounds for the causal effect of interest under weaker assumptions than those conventionally used for point identification of treatment effects in the presence of sample selection. In addition, we propose and estimate bounds on quantile treatment effects of the program on participants' wages. In general, we find convincing evidence of positive impacts of JC on participants' wages. Importantly, we find that estimated impacts on lower quantiles of the distribution are higher, with the highest impact being in the 5th percentile where a positive effect on wages is bounded between 8.4 and 16.1 percent. These bounds suggest that JC results in wage compression within eligible participants.Job Corps, Nonparametric Bounds, Principal Stratification, Active Labor Market Programs., Labor and Human Capital, Public Economics, Research Methods/ Statistical Methods, J24, J68, C14, C21,

Bounds on Average and Quantile Treatment Effects of Job Corps Training on Wages

We assess the effectiveness of Job Corps (JC), the largest job training program targeting disadvantaged youth in the United States, by constructing nonparametric bounds for the average and quantile treatment effects of the program on wages. Our preferred estimates point toward convincing evidence of positive effects of JC on wages both at the mean and throughout the wage distribution. For the different demographic groups analyzed, the statistically significant estimated average effects are bounded between 4.6 and 12 percent, while the quantile treatment effects are bounded between 2.7 and 11.7 percent. Furthermore, we find that the program's effect on wages varies across quantiles and groups. Blacks likely experience larger impacts in the lower part of their wage distribution, while Whites likely experience larger impacts in the upper part of their distribution. Non-Hispanic Females show statistically significant impacts in the upper part of their distribution but not in the lower part.training programs, wages, bounds, quantile treatment effects

Dominance Measuring Method Performance under Incomplete Information about Weights.

In multi-attribute utility theory, it is often not easy to elicit precise values for the scaling weights representing the relative importance of criteria. A very widespread approach is to gather incomplete information. A recent approach for dealing with such situations is to use information about each alternative?s intensity of dominance, known as dominance measuring methods. Different dominancemeasuring methods have been proposed, and simulation studies have been carried out to compare these methods with each other and with other approaches but only when ordinal information about weights is available. In this paper, we useMonte Carlo simulation techniques to analyse the performance of and adapt such methods to deal with weight intervals, weights fitting independent normal probability distributions orweights represented by fuzzy numbers.Moreover, dominance measuringmethod performance is also compared with a widely used methodology dealing with incomplete information on weights, the stochastic multicriteria acceptability analysis (SMAA). SMAA is based on exploring the weight space to describe the evaluations that would make each alternative the preferred one

Analytical study of a hovering magnetic system (Levitron)

El objetivo de este proyecto es llevar a cabo un estudio analítico del sistema de levitación magnética, conocido como Levitron. En primer lugar, se va a empezar haciendo una introducción explicando el funcionamiento del juguete, los elementos típicos que conforman el kit para jugar y su historia. En el capítulo 2 comienza el estudio analítico: se empieza describiendo el movimiento de la peonza como sólido libre, en ausencia de campo magnético externo y sometida únicamente a la acción de la gravedad, utilizando los ángulos clásicos de Euler. Sin embargo, veremos que el uso de estos ángulos produce una singularidad que nos obligará a presentar, en el capítulo 3, los ángulos de Tait-Byan para solucionarlo. En el capítulo 4 obtenemos las expresiones del campo magnético creado por la base, y en el capítulo 5 enunciamos el Teorema de Earnshaw y se estudia la estabilidad estática del sistema por medio de su energía potencial. En el capítulo 6, se obtienen las ecuaciones de movimiento utilizando la mecánica vectorial, y en el capítulo 7 se obtienen las ecuaciones del sistema empleando la formulación Lagrangiana y Hamiltoniana de la mecánica analítica. Una vez obtenidas las ecuaciones, se introducen variables adimensionales en el capítulo 8 para llevar a cabo la simulación numérica de los posteriores apartados. En el capítulo 9 estudiamos la estabilidad lineal del sistema, obteniendo la región de estabilidad en la que es posible la levitación y los modos normales de movimiento. En el capítulo 10, analizamos el acoplamiento lineal y no lineal y simulamos numéricamente la trayectoria considerando distintas condiciones iniciales que intentan reproducir situaciones reales que se dan a la hora de jugar. En el capítulo 11 presentamos las constantes de movimiento del sistema, y en el capítulo 12 se elabora un sencillo modelo para tener en cuenta el efecto de la fricción del aire sobre la peonza. Finalmente, en el capítulo 13 se añaden algunas instrucciones para dominar el juguete y se adjunta un diagrama de flujo donde se describen las situaciones habituales a las que un jugador se enfrenta cuando intenta hacer levitar la peonza. Por último, se adjuntan tres anexos: el primero contiene el ajuste experimental del campo magnético en el eje 01; el segundo está dedicado a los cuaterniones, incluyendo las propiedades más importantes y el sistema con las ecuaciones de movimiento en término de los parámetros de Euler; y en el tercero, se estudia la dinámica de tres sistemas que guardan analogías con el sistema de levitación magnética.The scope of this project is to perform an analytical study of the hovering magnetic system, known as Levitron. Firstly, we will start with an introduction where we explain how the toy works, the typical elements of the kit and its history. In chapter 2, the analytical study starts: we begin describing the free motion, in absence of the external magnetic field and solely submitted to the action of gravity, using the Classic Euler angles. Nevertheless, the use of these angles leads to a singularity that we need to avoid, so in chapter 3 we present the Tait-Bryan angles to solve this problem. In chapter 4 we obtain the expressions for the magnetic field generated by the base, and in chapter 5 we outline Earnshaw’s Theorem and study the static stability by means of the potential energy of the system. In chapter 6, we derive the equations of motion using vector mechanics, and in chapter 7 the same is done using the Lagrangian and Hamiltonian formulation of the analytical mechanics. Once the equations of the system are obtained, we define nondimensional variables in chapter 8 to perform the numerical simulations. In chapter 9 we study the linear stability of the system, obtaining the stability region for which stable hovering is possible and the normal modes. In chapter 10 we analyze the linear and nonlinear coupling, and numerically simulate the trajectory of the spinning top considering different initial conditions that reproduce real situations when one plays with the toy. In chapter 11, we present the constants of the motion of the system, and in chapter 12 a simple model considering air friction is shown. Finally, chapter 13 contains some instructions to master the toy and we attach a flowchart where we describe the usual situations that a player has to face to achieve levitation. Lastly, we include three addendums: the first contains the experimental adjustment of the magnetic field generated by the base in the 0�����1 axis; the second is dedicated to the quaternions, containing the main properties of its algebra and the set of equations of the system in terms of the Euler parameters; and finally, in the third we study the dynamics of three systems that share some of the characteristics of the hovering magnetic device.Universidad de Sevilla. Grado en Ingeniería de Tecnologías industriale

Coste energético del dribling en hockey sobre patines

El objetivo del presente estudio ha sido analizar y comparar el coste energético del dribling en hockey sobre patines con respecto a la acción de patinar. Doce jugadores amateurs bien entrenados han realizado, durante cinco minutos a 11, 13 y 15 km/h, patinaje solamente y patinaje mientras driblaban la bola con el stick. En ambos casos se evaluaron directamente y compararon consumo de oxígeno, ventilación, frecuencia cardíaca y nivel de percepción subjetiva del esfuerzo. Las variables fisiológicas fueron registradas mediante un analizador de gases portátil telemétrico (Cosmed K2) y un cardiotacómetro (Sport Tester PE4000). El coste energético se incrementa linealmente con la velocidad y, además, es superior en todos los casos al driblar la bola mientras se patina (17.50 ± 0.7 ml/kg.in vs 20.40 ± 0.61 inl/kg.m a 11 km/h; 19.23 ± 0.51 ml/kg.m vs 24.54 ± 0.76 ml/kg.m a 13 km/h; 24.84 ± 0.85 ml/kg.m vs 32.44 ± 0.7 ml/kg.m a 15 km/h). La ventilación y la frecuencia cardíaca muestran también una evolución similar. Los niveles de percepción subjetiva del esfuerzo son más altos al realizar el dribling que al patinar (p<.05) y, en ambos casos, también más elevados cuanto mayor es la velocidad (p<.05). Se puede concluir que el dribling de la bola en hockey al patinar aumenta significativamente el coste energético y la percepción subjetiva del esfuerzo con respecto a la acción de solamente patinar

Improving bankruptcy prediction in micro-entities by using nonlinear effects and non-financial variables

The use of non-parametric methodologies, the introduction of non-financial variables, and the development of models geared towards the homogeneous characteristics of corporate sub-populations have recently experienced a surge of interest in the bankruptcy literature. However, no research on default prediction has yet focused on micro-entities (MEs), despite such firms’ importance in the global economy. This paper builds the first bankruptcy model especially designed for MEs by using a wide set of accounts from 1999 to 2008 and applying artificial neural networks (ANNs). Our findings show that ANNs outperform the traditional logistic regression (LR) models. In addition, we also report that, thanks to the introduction of non-financial predictors related to age, the delay in filing accounts, legal action by creditors to recover unpaid debts, and the ownership features of the company, the improvement with respect to the use of solely financial information is 3.6%, which is even higher than the improvement that involves the use of the best ANN (2.6%)

Hybrid model using logit and nonparametric methods for predicting micro-entity failure

Following the calls from literature on bankruptcy, a parsimonious hybrid bankruptcy model is developed in this paper by combining parametric and non-parametric approaches.To this end, the variables with the highest predictive power to detect bankruptcy are selected using logistic regression (LR). Subsequently, alternative non-parametric methods (Multilayer Perceptron, Rough Set, and Classification-Regression Trees) are applied, in turn, to firms classified as either “bankrupt” or “not bankrupt”. Our findings show that hybrid models, particularly those combining LR and Multilayer Perceptron, offer better accuracy performance and interpretability and converge faster than each method implemented in isolation. Moreover, the authors demonstrate that the introduction of non-financial and macroeconomic variables complement financial ratios for bankruptcy prediction