We consider the single item lot-sizing problem with capacities that are non-decreasing overtime. When the cost function is i) non-speculative or Wagner-Whitin (for instance, constantunit production costs and non-negative unit holding costs), and ii) the production set-upcosts are non-increasing...

To date, empirical investigations of trade liberalization under the conditions of increasingreturns to scale (IRS) and imperfect competition (IC) have either assumed or imposed themarket and productive structures necessary for such a model. However, of the recent IRS/ICmodels used to simulate...

Using U.S. manufacturing data, Griliches (1969) found evidence suggesting that capitalequipment was more substitutable for unskilled than skilled labor. Griliches formulated thisfinding as the capital-skill complementarity hypothesis. The purpose of this study is todetermine whether the...

We propose a general class of Markov-switching-ARFIMA processes in order to combine strands of long memory and Markov-switching literature. Although the coverage of this class of models is broad, we show that these models can be easily estimated with the DLV algorithm proposed. This algorithm...

In this paper we carry over the concept of reverse probabilistic representations developed in Milstein, Schoenmakers, Spokoiny (2004) for diffusion processes, to discrete time Markov chains. We outline the construction of reverse chains in several situations and apply this to processes which are...

The subject of the present paper is a simplified model for a symmetric bistable system with memory or delay, the reference model, which in the presence of noise exhibits a phenomenon similar to what is known as stochastic resonance. The reference model is given by a one dimensional parametrized...

This paper analyzes the recently documented instability of money demand in theeuro area in the framework of a Markov switching trend model. First, we consider astandard flexible price model with stable money demand, rational expectations, andan exogenous income-money ratio which follows a Markov...

In this paper, we present a bounding methodology that allows to compute a tight lower boundon the cycle time of fork--join queueing networks with blocking and with general service timedistributions. The methodology relies on two ideas. First, probability masses fitting (PMF)discretizes the...

In this paper, we propose an analytic analogue to the simulation procedure described in Taylor (1997). We apply the formulas to a Belgian data set and discuss the interaction between a priori and a posteriori ratemakings.

We are dealing with the ruin probability and the expected ruin time in a two state Markov model ...