monetary announcements. Volatility of the returns is accounted for at the beginning and end of the trading session and it …

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 volatility. The method is based on adaptation of a procedure used …

Each year we are informed in the "World Competitiveness Yearbook" , which is published by the International Institute … economically most developed countries of the world, are regarded by this Institute as the main "etalon" for its evaluations, so …