The evolution of consumer behaviour (a dual demand of a large variety and personalised products) has encouraged firms to enlarge their product range. As a result, certain products have a very short life cycle (a few weeks to a few months). The supply chain for these products cannot be exactly...

The assumption of linearity is implicitly accepted in the process which generates a time series condition submitted to a ARIMA. That is why, in this paper, we shall discuss the research of long memory in the processes: the fractional ARIMA models, denoted as ARFIMA, where d and D, the degree of...

This paper presents the preliminary results of the study of the evolution of the SMEs in the information technology industry in France. This study was started during a research visit at the University Dauphine Paris, France, as a test model for a study involving SMEs from the information...

Econometrics has strongly evolved in recent years on both the methodological level as well as in terms of applications. This article presents the different econometric methods (time series econometrics, information panels, models of duration,...) and their applications for the enterprise: demand...

The aim of this study is to highlight the characteristics of corruption and non-academic behaviour in higher education. Using data series recorded at a representative student sample we emphasise causal relationships between certain components of corruption and aspects of academic behaviour in...