Efficiency of enterprises can be improved by implementation the computer system. Among potential advantages may be found: the decrease of the half-finished products, improving time of deliveries, growth of output of production, enlargement of the sale etc. But no one can overlook that it means...

We generalize a well-known Gale–Shapley algorithm [4] concerning optimal assignment of candidates to schools. In the classical Gale–Shapley model we consider a set of schools (colleges) S, a set of candidates K, candidates’ preferences in S and schools’ preferences in the set K...

A fuzzy concept of solving the linear programming problem with interval coefficients is proposed. For each optimism level of the decision maker (where the optimism concerns the certainty that no errors have been committed in the estimation of the interval coefficients and the belief that...

Real option valuation methods used in firm valuation process allow taking into consideration firm’s flexibility and its adaptability to environmental changes. The risk is taken into consideration at an expected rate of return in real option – an expected return rate is related to CAPM model....

This article presents an introduction to multicriteria decision making using two decision tools: the Analytic Hierarchy Process (AHP) and its generalization to dependence and feedback – the Analytic Network Process (ANP). The discussion involves theoretical aspects of these methods and some...

Numerous cases of systems not bringing expected results cause that investments in information technology are treated more and more carefully and are not privileged amongst others. This gives rise to the need for applying costs–effect calculations. Modeling IT effectiveness is a procedure which...

The paper investigates a certain inventory system whose input is a non-aggregated dynamicparameter process. The authors derive equations that define the distribution of conditional probabilities for the case of a lower-limit barier in subsystem L. They depend on the parameters of the functioning...

The paper considers a model for supporting mediator in bilateral negotiations with respect to the main factors that influence negotiation process and outcomes. A detailed description of the second gametheory based module of the model is given. The module is to determine the mix of negotiation...

One of the most known combinatorial problem is a Travelling Salesman Problem. In this paper a extended version is considered – multisalesman problem, which is known in the literature as a vehicle routing problem. It is very easy to define this NP-hard problem, but to find a optimal solution is...

In the classic Markowitz model, risk is measured by the return rates variance. However, equal treatment of negative and positive deviations from the expected return rate is a slight shortcoming of variance as the risk measure. Markowitz defined semi-variance to measure the negative deviations...