Sales force management decisions belong to the major issues considered in marketing research. Among others, the alignment of sales territories has been one of the main field of work for years. Recent results have reported a strong impact of the alignment of sales territories on profit, and,...

The sales force deployment problem is considered which arises in many selling organizations. As a solution a novel mixed-integer formulation is introduced which is specifically characterized by an infinite number of variables. A column generation approach is proposed to obtain upper and lower...

The Capacitated Facility Location Problem (CFLP) is a well-known combinatorial optimization problem with applications in distribution and production planning. A variety of lower bounds based on Lagrangean relaxation and subgradient optimization has been proposed for this problem. However, in...

This paper analyzes the Steiner-Weber-Problem with piecewise linear or piecewise constant transportation costs. These non-differentiable cost functions are analyzed using different one-step and dynamic linearization methods, which are based on approximations via average and marginal costs. An...

Die EU-Osterweiterung ermöglicht eine stärkere Arbeitsteilung zwischen den relativ kapitalreichen Staaten der EU und den relativ arbeitsreichen Zutrittsländern Mittel- und Osteuropas, von der insbesondere die ostdeutschen Kreise in Nähe der Grenze profitieren können. Diese Studie widmet...

This paper examines the impact of locational choice as a firm strategy to access knowledge spillovers from universities. Based on a large data set of young high-technology start-ups publicly listed in Germany, this study tests the propositions that geographic proximity to the university is...

Österreich und Deutschland sind nicht nur Nachbarländer sondern auch in der Geschichte Mitteleuropas historisch eng verbunden - so sehr, daß Österreicher und Deutsche neben der gemeinsamen Sprache auch wichtige Grundüberzeugungen politischer, sozialer und kultureller Art teilen. Trotzdem...

This paper analyzes the effects of local externalities on the probability of starting a new economic activity. We use firm-level data and geographic information on French zip-codes for 1993-2002. Poisson and Negative Binomial panel data models are estimated as they naturally allow for large sets...

Recently, Branzei, Dimitrov, and Tijs (2003) introduced cooperative interval-valued games. Among other insights, the notion of an interval core has been coined and proposed as a solution concept for interval-valued games. In this paper we will present a general mathematical programming algorithm...

This paper examines the costs of recent sovereign defaults using synthetic control methods, a novel econometric technique based on comparative case studies. Evidence on the effects of debt crises is thus presented on a case-by-case basis, uncovering large variations in country-specific...