Parameter uncertainty has been a recurrent subject treated in the financial literature. The normative portfolio selection approach considers two main kinds of decision rules: expected expected utility maximization and mean-variance criterion. Assuming that the mean-variance criterion is a good...

In this paper, we calculate the realized volatility measures using intraday data not equally spaced in time. The aim is to compare these measures with the ones from the stochastic volatility model. With this model, the data used are obtained in equal time intervals. Known facts are that the...

This paper examines the relationship between inequality and economic growth for thirty Portuguese NUTS3 regions within a multivariate panel framework over the period 1995–2007, using panel cointegration techniques to test for the existence of a relationship between inequality and real GDP per...

In this paper we construct a panel data set from 2000 to 2011 for the EU 28, studying the impact of education on the levels of software piracy in a country. When an aggregated analysis is made, e.g. considering all ISCED (International Standard Classification of Education) levels, expenditure on...

Project volatility is an essential parameter for real options analysis, and it may also be useful for risk analysis. Many volatility estimation procedures only consider the volatility in the first year of the project. Others consider that different years may have different values of the project...

The effect of collective bargaining on innovation has long been in dispute. At the level of theory, the hold-up problem has been used to justify positive as well as negative effects of unionism. At the empirical level, although some would consider the North American evidence as cut and dried,...

It is sometimes claimed that the coverage of collective bargaining in Germany is considerably understated because of orientation, a process whereby uncovered firms profess to shadow the wages set under sectoral bargaining. Yet importantly, at a time when collective bargaining proper has been in...

We investigate the links between agriculture and non-agricultural sectors in Portugal by assessing the existence of long-run relationships and causality among the three main sectors of activity in terms of value added and labour productivity using a VAR model for the period 1970-2006....

Keynes has emphasized a particular situation in which the liquidity preference becomes absolute, leading to monetary policy ineffectiveness: the near zero nominal rate of interest does not allow negative values of the real interest rate. This situation is termed liquidity trap (LT) and although...