This paper examines the occurrence of upward distorsions on working-hours caused by the existence of multiplicative effects in the production process. Multiplicative effects are mainly associated with managerial positions but, more generally, with jobs involving multiple tasks or affecting the...

Concepts of organizational learning abound in the literature. There has been an increasing diversity of attempts at classification, but an integrated theory is still missing. To provide some tentative answers as to why theory development id organizational learning has made such little progress,...

We use a decomposition approach to solve two types of realistic problems: block-angular linear programs arising in energy planning, and multicommodity network problems arising in capacity planning for survvable telecommunication netwroks. Decomposition is an algorithmic device that breaks down...

We describe in this paper a method allowing to order submodels in linear regression. A real function is attached to each submodel, allowing to graphically compare and order them. Our procedure defines an objective function depending on two factors (lack of fit and multicolinearity) with the...

Two new subroutines, SPLITDAT and DECOMP, have been created in the GAMS I/O library. The aim of these subroutines is to provide the GAMS user with the possibility of using Benders and other decomposition algorithms within the Gams modeling language framework.

We present a comparative study of perceptions concerning the environmental quality of residential real estate in Switzerland based on empirical data collected in three different linguistic regions. Responses by homeowners in the Geneva, Zurich and Lugano areas to questionnaires involving...

The capacitated multi-item lot sizing problem consists of finding a production schedule that minimizes over a finite number of periods the total production, holding inventory, and setup costs subject to demand and capacity constraints. Approximate solutions can be obtained by heuristics. In this...

Cet article propose une alternative automatisie ` la gestion manuelle des dicoupes dans une papeterie industrielle. Nous utilisons le modhle classique de Gilmore et Gomory. Nous risolvons le problhme relaxi par ACCPM qui est une mithode de plans coupants. Les sous-problhmes et la giniration...

Le present texte propose un inventaire general des pratiques de recherche marketing en SUisse en termes de type, d'intensite et d'objectif. Sur la base d'une etude sur 120 responsables de marketing en Suisse romande et en Suisse alemanique dans divers secteurs industriels, les tendances...