A Bayesian model for longitudinal circular data

The analysis of short longitudinal series of circular data may be problematic and to some extent has not been completely developed. In this paper we present a Bayesian analysis of a model for such data. The model is based on a radial projection onto the circle of a particular bivariate normal distribution. Inferences about the parameters of the model are based on samples from the corresponding joint posterior density which are obtained using a Metropolis-within-Gibbs scheme after the introduction of suitable latent variables. The procedure is illustrated both using a simulated data set and a realdata set previously analyzed in the literature.Circular data, Longitudinal data, Gibbs sampler, Latent variables, Mixed-effects linear models, Projected normal distribution

'Ephemerality’ in game development: opportunitiees and challenges

Ephemeral Computation (Eph-C) is a newly created computation paradigm, the purpose of which is to take advantage of the ephemeral nature (limited lifetime) of computational resources. First we speak of this new paradigm in general terms, then more specifically in terms of videogame development. We present possible applications and benefits for the main research fields associated with videogame development. This is a preliminary work which aims to investigate the possibilities of applying ephemeral computation to the products of the videogame industry. Therefore, as a preliminary work, it attempts to serve as the inspiration for other researchers or videogame developers.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

The Villanueva de la Reina Bridge Over the Guadalquivir (Jaén). Structural and Constructive Design of a Historic Reinforced Concrete Work

En la parte central de la provincia de Jaén, sobre una carretera poco transitada, se localiza un puente histórico de hormigón armado. Fue construido a principios del siglo XX y todavía se mantiene en uso en nuestros días. Este puente tiene una configuración insólita, estando formado por tramos rectos de vigas trianguladas de hormigón armado. A pesar de ser una obra muy original, relevante para la Historia de la Ingeniería en España, su conocimiento hasta ahora era limitado En el presente artículo se hace una introducción a su historia y se describe técnicamente su configuración y las particularidades de sus elementos, a partir de una revisión global en la que se incluyen los planteamientos de diseño originales y las modificaciones introducidas durante su ejecució