Classic DEA models (e.g., CCR or super-efficiency DEA) assume that inputs are complementary and there is no substitution of inputs. The lack of substitution is a result of using the same input multiplier for all inputs. The author indicates that there is a possibility of including the...

Nowadays the problem of efficient costs management affects not only the manufacturing industry concentrated on profits. Many factors, above all the managers awareness, cause that every institution is trying to find solutions which ensure information support in cost area. This is an important...

A possibility of a software quality estimation becomes a necessity as the software costs gradually increase. Quality measurement methods are being sought in accordance with customer’s and developer’s needs. These methods may contribute to an improvement of the quality of the delivered...

Assessing the voting power of a decision maker depends on the appropriate evaluation of all factors influencing such power. Models constructed with the use of a set of given factors are usually statistically significant, but at the same time the determination coefficient is very low. An...

The Laffer curve is undoubtedly the most popular tax revenue curve. Many critics claim that the Laffer curve does not describe any real economic processes, but only represents an “ideology”. The author of the present paper shows that the Laffer curve, and, in general, the tax revenue curves,...

A model of the short-term power system load forecasting based on fuzzy clustering is presented. It can be classified as similarity-based models relying on the assumption that if patterns of the time series sequences are similar, then the forecast patterns associated with them are also similar....

The methodology of risk calculation for project network techniques is presented. Development and research work is connected with uncertainty and risk. Many models for engineering design process are described in literature but it is necessary to develop a new one which would involve uncertainty....

The paper deals with the problem of determining movement schedule of many objects, used in many domains such as: routing in computer networks, movement planning of mobile robots, tasks processing in parallel or distributed computing systems, arms control of independent robots, planning and...

Along with the development of world and regional economy the importance of the transfer pricing is growing up. In the paper, some results of research accomplished in Poland, in 2006, are partly presented. It was carried out upon a large number of Polish enterprises belonging to capital groups...

The balanced scorecard is a management system that enables organizations to clarify their vision and strategy and translate them into action. In four perspectives it can catch most important targets of the firm. Activity Based Costing (ABC) is a method which can estimate cost of process and...