This paper aims to analyse the underlying factors of varied behaviour shown in the store set of purchase of households during a time period (temporal variation). In order to examine whether there are differences between households with and without shopping varied behaviour, a Bayesian Separate...

This paper evaluates optimal monetary policy in a new Keynesian model for an open economy with financial frictions. In the model, aggregate demand is made up of the weighted average of the short and long-term interest rates. A comprehensive set of monetary policy rules is established, all...

One of the most frequent questions asked by economists is how individual members of societies make choices. It can be observed that economic agents imitate other agents’ actions. It should be asked why rational people choose to imitate other’s behaviour and make decisions that are not based...

Este documento analiza la relación existente entre la deuda externa pública y la inversiónprivada para Colombia entre 1994 y 2007, a partir del modelo de series de tiempo no linealesTAR. La estimación del modelo se realizó a través de los métodos MCMC y el enfoquebayesiano. Los resultados...

The propose of this paper is to develop a Bayesian procedure that adequately account for studies with zero observations in meta-analysis and then we focus the problem in the context of the Bayesian selection models. Also, attention is focused to the link distribution between effectiveness in...

The Black-Litterman (BL) model has been proposed as an alternative to Markowitz's average-variance model for the structuring of financial asset portfolios, allowing the incorporation of perspectives of fundamental analysts and guaranteeing a high degree of diversification. This model is applied...

En este estudio se identifica un conjunto de características asociadas al hecho de que un migrante colombiano retornado se convierta en un emprendedor. El análisis se realizó con los datos recogidos en la encuesta Global Entrepreneurship Monitor (GEM) cuyo formulario fue modificado en el año...

The approximation of G/G/s models from Markov models M/M/s has been studied in the literature. The study of a queue model is detailed in the present article, using times of arrivals and time service distributed by Weibull whose estimation of parameters was performed with the Bayesian method...

The valuation of options and to a large extent the financial derivatives market require an optimal estimation of the volatility, since this is precisely the variable that is negotiated. We present then a statistical methodology for the estimation of the volatility parameter for an asset using...

It was in the 1990's when the concept of Operational Risk was defined, since then the institutions, especially those in the financial sector, are worried about this type of risk since their exposure could have fatal consequences. In case of the insurance sector its study originates due to the...