Leybourne et al. (1998) have proved the possibility of a `converse Perron phenomenon' when conventional Dickey-Fuller tests are applied to deter-mine the order of integration of a time series. That is, if the true generating process is I(1) but with a break, frequent spurious rejections of the...

Preisgarantien im Einzelhandel scheinen auf den ersten Blick Ergebnis eines intensiven Wettbewerbs zu sein. Theoretische Analysen und empirische Studien zeigen jedoch, dass dies in der Regel nicht der Fall ist. Preisgarantien und hier vor allem Garantien, bei denen mehr als die Differenz zu...

We investigate the impact of agent communication networks on prices in an artificial stock market. Networks with different centralization measures are tested for their effect on the volatility of prices. Trading strategies diffuse through the different network topologies, mimetic contagion...

This paper employs an asymmetric component generalized autoregressive conditional heteroskedasticity (AC-GARCH) model to test the relation between securities transaction tax (STT) and market volatility. Proponents of an STT argue that such a tax will reduce market volatility by discouraging the...

This paper analyzes the cost of long-term care (LTC) associated to individuals in dependence situation. The economic cost of care per unit of service is linked to the expected time of needed care and the intensity of required services. We have estimated the expected lifetime cost of LTC in...

Grey system theory can powerfully deal with incomplete and uncertain information. In this paper, we introduced an improved grey GM(1,1) model that integrates residual modification with Markov chain model. By this model, we improved the forecast accuracy of original grey forecast model and...

Exchange-traded funds (ETFs) exist for stock, bond and commodity markets. In most cases the underlying feature of an ETF is an index. Fund management today uses the active and the passive way to construct a portfolio. ETFs can be used for passive portfolio management, for which ETFs with...

In this paper is carry out an analysis of affinities in the perception on how to leave the crisis behind. For that we have considered the opinion of experts belonging to the politics, the economy, the company and the banking in order to gather those opinions and to look for likeness and...

The Sharpe ratio is a common financial performance measure that represents the optimal risk versus return of an investment portfolio, also defined as the slope of the capital market line within the mean-variance Markowitz efficient frontier. Obtaining sample point and confidence interval...

This research was undertaken to develop a user-friendly, systematic management tool to understand and assess the key risks specific to PPP power station project with the ultimate goal of improving project performance. The study develops a conceptual risk assessment system (RAS) using combined...