Gestión de clientes de servicios deportivos: un modelo de dinámica de sistemas

[ESP] Esta investigación propone un modelo general de gestión de clientes de servicios deportivos que pretende mejorar la dirección estratégica de los mismos. Para ello, se han integrado variables de la oferta y la demanda, en un planteamiento principalmente enfocado en la perspectiva de marketing. La dinámica de sistemas ha sido la metodología utilizada, con el fin de manejar la complejidad inherente al estudio de este tipo de fenómenos. Además, el modelo se presenta con un enfoque didáctico, en aras de facilitar su comprensión, describiendo las ecuaciones, aportando la sintaxis de programación, y dejando las puertas abiertas a la mejora y posible reformulación del mismo. [ENG] In this research a customer management model of sports services is formulated. This model may serve as a strategic tool that will allow managers to better understand the flow of customers in the sports centre. System dynamics has been used in order to deal with this complex task. The model is explained using a didactic approach. Finally, the equations and the program syntax are provided

Percepción del empleado y del cliente en servicios públicos deportivos

[ESP]Proponemos un modelo para medir las actitudes de los trabajadores de servicios deportivos públicos, con el fin de relacionar sus percepciones sobre su situación laboral y condiciones de trabajo con las actitudes de los consumidores. El modelo está concebido para ser utilizado con los trabajadores que interactúan con el cliente, ya que de su desempeño dependen buena parte de las evaluaciones que los consumidores realizan sobre el servicio. En el desarrollo de nuestra propuesta utilizamos un enfoque novedoso, basado en la modelización formativa y en el análisis de distribuciones de probabilidad. Así, ofrecemos una metodología de análisis que puede servir como guía para la dirección de recursos humanos, un área muy poco tratada en la investigación académica sobre servicios deportivos. [ENG] We propose a model for measuring the employee attitudes of public sports services, with the aim to establish a relationship between their perceptions of job conditions and the consumer attitudes toward the service provider. The model must be applied to customer-contact employees, because the performance of this type of employees is directly linked with the customer evaluations of the service. In the development of our proposal, we use a formative approach to measurement. In addition, the method for mapping both employee and customer perceptions is based on their probability distributions. Therefore, we offer a methodology of analysis that can serve as a guide to human resource management. The contribution of our study is valuable, because this field of research has been an under-researched area in the academic sports service literature

The band gap problem: the accuracy of the Wien2k code confronted

This paper is a continuation of our detailed study [Phys. Rev. B 86, 195106 (2012)] of the performance of the recently proposed modified Becke-Jonhson potential (mBJLDA) within the known Wien2k code. From the 41 semiconductors that we have considered in our previous paper to compute the band gap value, we selected 27 for which we found low temperature experimental data in order to pinpoint the relative situation of the newly proposed Wien2k(mBJLDA) method as compared to other methods in the literature. We found that the GWA gives the most accurate predictions. The Wien2k (mBJLDA) code is slightly less precise, in general. The Hybrid functionals are less accurate, on the overall. The GWA is definitely the most precise existing method nowadays. In 88% of the semiconductors considered the error was less than 10%. Both, the GWA and the mBJLDA potential, reproduce the band gap of 15 of the 27 semiconductors considered with a 5% error or less. An extra factor to be taken into account is the computational cost. If one would seek for precision without taking this factor into account, the GWA is the method to use. If one would prefer to sacrifice a little the precision obtained against the savings in computational cost, the empirical mBJLDA potential seems to be the appropriate method. We include a graph that compares directly the performance of the best three methods, according to our analysis, for each of the 27 semiconductors studied. The situation is encouraging but the problem is not yet a closed issue.Comment: 8 pages, 1 figur

Dissipative dynamics of a particle in a vibrating periodic potential: Chaos and control

The dissipative chaotic dynamics of a particle subjected to a horizontally vibrating periodic potential is characterized theoretically and confirmed numerically in the case of an external chaos-controlling periodic excitation also acting on the particle. Theoretical predictions concerning the chaotic threshold in parameter space are deduced from the application of Melnikov's method that fully determine the chaos-control scenario. Also, the structure of diverse regularization regions in parameter space is explained theoretically with the aid of an energy analysis. It was found that the phase difference between the two periodic excitations involved plays a crucial role in the chaos-control scenario, with the particular feature that its optimal value depends upon the ratio between the damping coefficient and the excitation frequency. This constitutes a genuine feature of the chaos-control scenario associated with nonsteady potentials which is in contrast to the case of steady potentials. Additionally, we demonstrate the robustness of the chaos-control scenario against the presence of low-intensity Gaussian noise and reshaping of chaos-suppressing excitations.R.C. and J.A.M. acknowledge financial support from the Ministerio de Economía y Competitividad (MINECO, Spain) through Project No. FIS2012-34902 cofinanced by FEDER funds. R.C. acknowledges financial support from the Junta de Extremadura (JEx, Spain) through Project No. GR15146. P.J.M. acknowledge financial support from the Ministerio de Economía y Competitividad (MINECO, Spain) through Project No. FIS2011-25167 cofinanced by FEDER funds.Peer Reviewe