The importance of social and economic networks has meanwhile been widely acknowledged throughout social sciences. Network positions are supposed to be important for both, consumers and suppliers. Examples are R&D collaborations, strategic alliances, knowledge management within organizations,...

Advances in information technology increasingly allow firms to identify expensive, high-cost customers, who are not only individually less profitable for firms but also raise the average marginal cost incurred by firms and thus impose a negative externality on inexpensive customers. Should...

Four essays, or chapters, model the capital structure, governance, and investment decisions as part of a sequential game. Each chapter is separate in its context, assumptions, and conclusions. The titles of the chapters are below.Abstracts of each essay or chapter can be found at the beginning...

The objective of this paper was to compare and to analyze three portfolio selection models: Mean-Variance, Minimax and Minimax Weighted. These models were evaluated using historical data (September 1999 to August 2000, January 2001 to December 2001 and February 2002 to January 2003) obtained...

As the world's largest carbon resources country with relatively great carbon emission, China in has just started its carbon trade. China is only a passive participant in international carbon trading market, rarely participating in the project of Clean Development Mechanism (CDM). Therefore,...

This paper considers a tourism supply chain (TSC) for package holidays. Three sectors are included: a theme park, hotel and accommodation providers and tour operators. The different sectors are coordinated with each other, while enterprises within each compete in order to optimize their own...