Estimation of volatility of financial time series plays a crucial role in pricing derivatives. Volatility is often estimated from historical data; however, it is well known that volatility varies in time. We propose a method to choose a suitable length of historical data to estimate contemporary...

We present a model of learning in which agents learn from errors. If an action turns out to be an error, the agent rejects not only that action but also neighboring actions. We find that, keepng memory of his errors, under mild assumptions an acceptable solution is asymptotically reached....

Results of a survey concerning the importance of quality management of the educational process among high officials of Czech universities and colleges are summarized in this article. Three of possible methods of quality management in the educational process are described here: Standardization...

This paper presents the basics of the Transaction cost theory (TCT) and shows it's contribution to the Theory of the firm by the view of the new institutional economics. In the first part, author presents resources and presumptions of the TCT mainly by O. E. Williamson. The theory is based on...

The interconnections within food, biofuel and fossil fuel markets are first described in the context of biofuels technologies and economic policy framework. Consequently, the econometric analysis consisting of Johansen cointegration, error correction model, vector autoregression and Granger...

Modifying IS-MP-IA model by using EU economic characteristics allows for better interpretation of the results. Specifically, from the point of view of the IS and MP curves we obtain useful information about the influence of EU economy on the Czech economy (i.e. on its GDP). We may conclude that...

In the study submitted, selected methods of financial time-series analysis are applied to daily returns of the most liquid stocks at Czech capital market. In most cases, symmetric GARCH(1,1) models are quite satisfactory. Further, ARFIMA models enabling to catch "long memory" of underlying...

This study thoroughly analyzes the stock market efficiency hypothesis - its weak form - in the Czech Republic, Poland and Hungary in 1995-2005. It aims to reveal whether trading on historical information about stock prices or indices may lead to economically significant abnormal profits and...