This work presents a proposal of usage of genetic algorithm to short-term forecasting of price and volume quotations. Presented algorithm resembles the naive method with seasonality but a lag of observation used as predictor can change in order to achieve best adjustment of ex post prognosis to...

The article presents a method of establishing efficiency of business units when a result (e.g. production, profit, income) is obtained with more than one input. This approach is a generalization of a method presented in [4]. It is based on partial efficiency isoquants in the input-productivity...

In the process of assets selection and their allocation to the investment portfolio the most important factor issue thing is the accurate evaluation of the volatility of the return rate. In order to achieve stable and accurate estimates of parameters for contaminated multivariate normal...

Fuzzy arithmetic seems to be a well-developed and well-formalized branch of fuzzy sets theory. Nevertheless, there are some problems with its practical implementation. In practice, one can very often encounter the question of how to calculate the value of an arithmetic expression when its...

In the article the author introduces time-driven activity based costing – a new method of costs counting. It is an improved concept of the activity based costing (ABC). The author performs a synthesis of scattered and incomplete knowledge based on the literature about the new concept. The...

The article presents the implementation of Balanced Scorecard for processes and activities. This method (ZKD) could be cascaded not on the functional structure of the organization but on processes and activities. Due to the bottom up orientation there can be noticed different aspects (important...

The paper present a review of information system usability assurance approaches. The author describes a historical development of software production models and divides them into two main groups. The first one, named classical, included fundamental computer program life cycles derived from...

A scale curve is a nonparametric approach to study a dispersion of a random vector around a multivariate median. The scale curve is a volume functional based on probabilities allocated on the so-called central regions induced by a given statistical depth function. The curve expresses a degree of...

In this paper we consider the sensitivity problem connected with portfolio optimization results when different measures of risk such as portfolio rates of return standard deviation, portfolio VaR, CVaR are minimized. Conditioning the data (represented by spectral condition index of the rates of...

The idea for this article was conceived on my subsequent visit at Ludwig van Beethoven’s Museum at Bonngase 20 in Bonn in August 2007. Since 2004 in The Digital Beethoven’s House there has been an opportunity to listen to and watch Beethoven’s works, in totally new three-dimensional...