Athanasia Mavrommati

Game Theory Models and Their Applications in Inventory Management and Supply Chain

Analysis of supply chain politics can benefit from applying game-theory concepts extensively. Game theory tries to enlighten the interactions between individuals or groups of people whose goals are ...

Measuring advertising intensity and intangible capital in the Greek food industry

The objective of the present paper is to examine market conduct and its determinants in the Greek food industry and to measure how and to what degree the industry and the firms structural characteristics affect advertising intensity. An advertising intensity model giving emphasis to intangible capital is formulated. Data from ICAP have been used on a four-digit classification for the food industry during the 1990–1997 period. The empirical results indicate that intangible capital positively affects the advertising intensity of the firm and plays an important role in strategies that affect total cost, demand and structure of the market.

Efficient minimization over products of simplices and its application to nonlinear multicommodity network problems

Many problems in portfolio selection, in traffic planning and in computer communication networks can be formulated as nonlinear problems involving minimization of a nonlinear function over simplices. Based on the concepts of regularization and partial linearization, we propose an efficient solution technique for such programs, prove its global convergence and discuss the possibilities for parallel implementation. We provide, as an application, an algorithm for traffic assignment which outperforms previous state-of-the-art codes.

From Logistics to Collaborative Logistics — A Theoretical Approach

The purpose of this paper is to describe the collaborative environment now involving, particularly within the scope of logistics; to understand collaborative logistics lines and to recognize how costs are distributed in a logistics network. The paper defines the collaborative commerce and understands its place in logistics strategies, determines the value of third party logistics providers, looks for partnerships, alliances and information hubs that will improve business and collaborates with competitors to reduce the costs.