Long Memory on the German Stock Exchange

In this study, the contributors present the results of their investigations into the long-memory properties of trading volume and the volatility of stock returns (given by absolute returns and alternatively by square returns). Their database is daily stock data of German companies in the DAX segment of the German Stock Exchange. The purpose of these investigations is the calculation of memory parameters and to determine whether there exists the same degree of long memory for trading-volume and return-volatility data. Calculations are performed on daily results from January 1994 to November 2005 and in three sub-periods: January 1994 to December 1997, January 1998 to December 2001, and January 2002 to November 2005.DAX 30; trading volume; univariate and bivariate long memory

Java based transistor level CPU simulation speedup techniques

Transistor level simulation of the CPU, while very accurate, brings also the performance challenge. MOS6502 CPU simulation algorithm is analysed with several optimisation techniques proposed. Application of these techniques improved the transistor level simulation speed by a factor of 3–4, bringing it to the levels on par with fastest RTL-level simulations so far

An optimal strategy of resource sharing in a case of state-toggling agents

This paper presents an optimal scheduling solution for a case of agents sharing a resource. The amount of resource can not satisfy all agents at once and in case of runout there is a penalty. Each agent randomly toggle its state between requiring and not requiring the resource. Using the knowledge of previous state and probability of change, the scheduling algorithm is able to calculate optimal number of concuring agents for one turn, that minimizes possibility of collision yet provides as much throughput as possible. Several different scheduling strategies are tested. The optimal solution adapts automatically to the value of probability of change. Further experiments show that optimality is retained if only the average probability of a set of agents is known. A case of practical application is provided

Intraday patterns in time-varying correlations among Central European stock markets

In this paper we investigate intraday relationships between three Central European stock exchanges: those in Frankfurt, Vienna and Warsaw. They represent different types of stock markets: two of them are developed, while the last is an emerging market. Via DCC-GARCH models we analyze and compare time-varying conditional correlations of intraday returns of the main indices of the stock exchanges. We study the impact of important public information, US macroeconomic news announcements, on the strength of interrelationships between the markets. Additionally, we analyze diurnal patterns in time-varying correlations on different days of the week

Pałac w Jabłonowie Pomorskim – historia i współczesność

The author describes an interesting history, architecture and management of the palace in the revival-gothic style in Jabłonowo Pomorskie. The benefactor of this palace was Stefan Narzymski and the architect August Fryderyk Stüler. The palace was built between 1854 and 1859. At the moment there is a convent located in this building

An improvement in fuzzy entropy edge detection for X-ray imaging

The following paper discusses the topic of edge detection in X-ray hand images. It criticises the existing solution by highlighting a design fault, which is a carelessly chosen function and then proposes a way to eliminate the fault by replacing it with a better suited function. The search for this function and its results are also discussed in this paper. It also presents the aspect of pre- and postprocessing through filtering as another improvement in edge detection

An improvement in fuzzy entropy edge detection for X-ray imaging

The following paper discusses the topic of edge detection in X-ray hand images. It criticises the existing solution by highlighting a design fault, which is a carelessly chosen function and then proposes a way to eliminate the fault by replacing it with a better suited function. The search for this function and its results are also discussed in this paper. It also presents the aspect of pre- and postprocessing through filtering as another improvement in edge detection

Aktywnie na matematyce. Program nauczania matematyki dla IV etapu edukacyjnego

Program nauczania matematyki w szkołach ponadgimnazjalnych, tj. w ramach IV etapu nauczania, z uwzględnieniem wymagań reformy programowe

METODY WYZNACZANIA STANU NAŁADOWANIA AKUMULATORÓW STOSOWANE W POJAZDACH ELEKTRYCZNYCH, URZĄDZENIACH PRZENOŚNYCH I W LABORATORIUM

State-of-charge of battery is a very important parameter for any electrical vehicle or mobile device user. It allows estimating the time range and in the case of electric vehicles available distance range. The paper presents the main methods for determining the state-of-charge of batteries used in portable devices, electric vehicles, and at laboratories. The principle of each method, described here, their advantages and disadvantages and applicability to specific devices has been explained.Stan naładowania akumulatora jest bardzo istotnym parametrem dla użytkownika pojazdu elektrycznego lub urządzenia przenośnego. Pozwala on oszacować pozostały czas pracy, a w przypadku pojazdów elektrycznych dostępny zasięg. Artykuł przedstawia najważniejsze metody służące do wyznaczania stanu naładowania akumulatorów, stosowane w urządzeniach przenośnych, pojazdach elektrycznych, a także w badaniach laboratoryjnych. Wyjaśniono istotę działania każdej z metod, opisano ich wady i zalety oraz możliwości zastosowania do konkretnych urządzeń