Die Produktlebenszyklusanalyse ist ein wichtiges Instrument der Produktpolitik. Verschiedene Diffusionsmodelle werden in der Theorie und Praxis angewendet, um Aussagen über künftige Umsatzverläufe zu erhalten. Die mathematische Modellierung geht grundsätzlich von einem deterministischen...

In the experience of the authors, most firms do not have good procedures for estimating the net profitability of coupon promotions. Instead, managers generally examine a number of subsidiary measures such as: redemption rates, market share and the direct costs of the coupon promotion. A...

Analysts often rely on methods that presume constant stochastic variance, even though its degree can differ markedly across experimental and field settings. This reliance can lead to misestimation of effect sizes or unjustified theoretical or behavioral inferences. Classic utility-based...

The sales-marketing mix relationships for brands of a product class are often modelled as a multiple equation system. Whenever sales are expressed as shares, such systems are sum-constrained and therefore singular. Singular systems can be calibrated by deleting one equation from the model and...

L'ensemble des travaux que l'on regroupe sous la même dénomination d'"analyse économique des normes" sont relativement dispersés. Ce qui fait leur point commun est qu'ils se revendiquent de l'individualisme méthodologique et qu'ils donnent lieu à des modélisations de l'interaction entre...

In transport analysis, we generally have several correlative explanatory variables when we want to explain the evolution of a factor. Therefore the quantification of the contribution of each variable in the evolution of our study object is often problematic. This problem is well known in...

The agreement recently signed between Morocco and the United States foresees several modalities in dismantling tariffs. Our simulations show that the various modalities of trade liberalization may have different impacts on the welfare, the rate of growth and the sectoral trade balance of these...