Using the maximum likelihood method, in order to estimate Half-Normal stochastic frontier production models, entails several practical di±culties that, perhaps, have not been su±ciently emphasised. In employing FRONTIER software, we analyse the case in which the estimation obtained suggests...

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...

The paper intends to measure the daily Value-at-Risk (VaR) for Rial-Euro exchange rate fluctuations risk. Since in this case we deal with a single risk factor, so we will not use the Monte Carlo simulation method to measure the VaR and we will only use the parametric and historical simulation...

Insurance companies have to estimate reserves and provisions to cover the payment of either unreported claims or unsettled claims. In this paper, we apply the Chain-Ladder method to obtain a point estimate of reserves, and then we use the bootstrap technique to estimate the margin of error and...

In some circumstances a decision maker, expert, in a group decision making problem cannot express his/her preferences with a unique linguistic fuzzy preference because he/she is dubious into some preferences. In this paper, we present a consensus model for group decision making problems with...

Today it's frequently used the terms PIGS or PIIGS, acronyms used by economic journalists to refer to different countries of the European Union for their statement of affairs. The bad connotation is evident from the fact that pigs in English suggest the bad state of the economies of these...

This paper offers a specific analysis of speculation bubbles in the economic history of the world, and then tries to identify the causes and effects of the speculation bubble on the real estate market in the USA, which was the main cause of the subprime crisis. The first part of the paper aims...

In this paper we extend the Stock and Watson’s (Leading economic indicators, new approaches and forecasting records, 1991) single-index dynamic factor model in an econometric framework that has the advantage of combining information from real and financial indicators published at different...

This paper sets out a comprehensive framework to identify regional business cycles within Spain and analyses their stylised features and the degree of synchronisation both within them and between them and the Spanish economy. We show that the regional cycles are quite heterogeneous although they...

Nachdem die deutsche Wirtschaft 2011 noch um drei Prozent gewachsen ist, sind die Aussichten für 2012 durch die Krise im Euroraum überschattet. Dadurch wird der kräftige Aufschwung unterbrochen, obwohl die Kapazitäten bis zuletzt nicht voll ausgelastet waren. Vorübergehend wird die deutsche...