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

Regional economic effects of differentiated climate action, carbon leakage, and anti-leakage measure

Unilateral climate policy by the EU can be detrimental for global climate protection. Our purpose is to provide an economic analysis of this policy, to quantify the risk of carbon leakage, and to investigate economic effects related to the potential anti-leakage policy measures. We analyze existing definitions of carbon leakage and propose a new rigorous one. This is then tested using computable general equilibrium analysis for unilateral carbon dioxide abatement programs in the European Union in 2020, adopted under the United Nations Framework Convention on Climate Change (8%, 20% and 30% emission reduction relative to 1990). Our model of the global economy is disaggregated into three regions (the EU, the rest of the Annex I and non-Annex I countries). The analysis includes a decomposition of change in carbon emission using Logarithmic Mean Divista Index. While some anti-leakage measures (such as border tax adjustment on imports) reduce carbon leakage significantly, some of them are less effective. We found that output-based allocation of free emission permits to energy-intensive and trade exposed sectors reduce the leakage rate slightly, and a clean development mechanism -- depending how it is defined -- can either remove or increase carbon leakage. The results crucially depend on technical assumptions adopted in such models. We identified a list of parameters (like intra-import and Armington elasticities) which affect not only the magnitude but also the sign of carbon leakage rate. Manipulating with elasticities of substitution in production function suggests that in reaction to the unilateral action of the EU, the other regions may both increase or decrease their carbon emissions. Even though we are positive about computable general equilibrium models? application in this policy area, their policy simulations cannot be directly treated as policy recommendations without a careful validation of their assumptions