A new algorithm for selecting an effective investment project portfolio from a collection of projects developed by a company has been presented in this paper. The problem of selecting an investment project was formulated as multi-objective optimization problem. The algorithm is suited for...

A cooperative game in partition function form is proposed for a cost allocation problem. The game describes a real situation in which a payoff of any coalition does not only depend on the players in the coalition but also on the coalition structure of the other players. Solution concepts like...

The article describes some analytical applications of the basic DEA model – CCR model proposed by Charnes, Cooper and Rhodes [2]. The author presents elementary DEA profiles, terminology, ideas and some traditional ways of determining the optimal technology for inefficient objects and...

The author examines the Internet network as a global economy in which the only output is information. It is assumed that there is a certain hierarchy of keywords in the net space. Important keywords create large information graphs, which attract smaller graphs consisting of less important data....

In this article we propose the application of Wroclaw taxonomy, which is also known as the dendric method. This is a tool used in comparative analysis for non-profit units. The research was conducted in a spatio-temporal way and involved 59 public universities (universities subordinate to the...

In this paper a simulation model is presented, which by means of a cellular automaton allows us to analyze the process of decision making by consumers. The model takes into account the influence of the neighborhood, as well as of advertising. It works on the basis of a two-dimensional cellular...

The a priori power of the president of Poland, lower chamber of parliament (Sejm) and upper chamber of parliament (Senate) in the process of legislation are considered in this paper. The evaluation of power is made using the Johnston power index

The emission trading is proposed in the Kyoto Protocol. An appropriate market and the market of financial derivatives for allowances will be established. Using the neutral martingale method and Monte Carlo simulations, we propose a stochastic model with a pricing formula, which may be useful for...

In the paper the criteria of preliminary selection used by venture capital funds were described. Two methods of carrying out selection were characterised. Next, a model of the process of preliminary selection, based on the parallel method, was presented. An example of such a selection procedure...

In this paper we present a new definition related to super-balanced games interpreted as a particular type of cooperative game with transferable utility (TU). A concept of solution is defined and an existence result is determined. The fundamental aim of the paper is to extend the results...