The present paper proposes a new approach to solve generalized fractional programming problems through user interaction. Capitalizing on two alternatives, we review the Dinkelbach-type methods and set forth the main difficulty in applying these methods. In order to cope with this difficulty, we...

This paper shows that the conditionality of investment decisions in R&D has a critical impact on portfolio risk, and implies that traditional diversification strategies should be reevaluated when a portfolio is constructed. Real option theory argues that research projects have conditional or...

At the time of writing we entered the final stage of implementing the crew rostering system Harmony CDR to facilitate the planning of catering crews on board of the Thalys, the High Speed Train connecting Paris, Cologne, Brussels, Amsterdam, and Geneva. Harmony CDR optimally supports the...

Many high-tech products and durable goods exhibit exactly one significant price cut some time after their launch. We call this sudden transition from high to low prices the price landing. In this paper we present a new model that describes two important features of price landings: their timing...

The paper claims that the analysis of the private business sector needs to concentrate on entrepreneurship. Based on fieldwork the paper proceeds by describing how Chinese entrepreneurs perceive the (economic) problems whose solutions pre-determine the economic performance of new firms....

Previous research has considered extensively the causes and effects of market entry order and timing. It has neglected, however, the timeliness of such entry — the degree to which a firm delivered a new product on the date it had set for its release. In this article, we begin to fill the...

Conventional studies of bilateral trade patterns specify a log-normal gravity equation for empirical estimation. However, the log-normal gravity equation suffers from three problems: the bias created by the logarithmic transformation, the failure of the homoscedasticity assumption, and the way...

In this paper, we explain how Internet retailers can learn from proven revenue management concepts and use them to reduce costs and enhance service. We focus on attended deliveries as these provide the greatest opportunities and challenges. The key driver is service differentiation. Revenue...

Two extensions are formulated of the analysis of the allocation of decision rights in Hendrikse and Veerman (2001). First, the incomplete contracts in their article can be viewed as simple long-term contracts, i.e. it is not allowed to make the allocation of authority contingent on the...

We define emotional competence as a person’s domain-specific working model about how one can appropriately manage one’s emotions within interpersonal situations. Emotional competence is conceived as the integration of seven seemingly unrelated proficiencies: perspective taking,...