A kutatói életpálya legmeghatározóbb szakasza a doktori fokozat megszerzését követő hat-nyolc év. Az ezen időszakot vizsgáló nemzetközi kutatások két fontos tényre hívják fel a figyelmet. Egyfelől arra, hogy az egyetemi és a kutatóintézeti munkahelyek száma lassabban nő,...

Carbon terrestrial sinks are seen as a low-cost alternative to fuel switching and reduced fossil fuel use for lowering atmospheric CO₂. In this study, we review issues related to the use of terrestrial forestry activities to create CO₂ offset credits. To gain a deeper understanding of the...

The traditional Capital Asset Pricing Model stating that the risk premium of a financial asset is positively related to its market risk, was found to be insufficient in explaining the expected returns of stocks. Fama and French (1993) introduced the “Three-Factor Asset Pricing Model” via...

En el análisis estadístico-descriptivo de la serie 1952-2003 para la economía boliviana, se observó que el comportamiento tendencial es dominante respecto al cíclico, por lo que la discrecionalidad de las políticas económicas no coadyuva al crecimiento económico. De esta manera, adquiere...

We construct a weighted Euclidean distance that approximates any distance or dissimilarity measure between individuals that is based on a rectangular cases-by-variables data matrix. In contrast to regular multidimensional scaling methods for dissimilarity data, the method leads to biplots of...

Canonical correspondence analysis and redundancy analysis are two methods of constrained ordination regularly used in the analysis of ecological data when several response variables (for example, species abundances) are related linearly to several explanatory variables (for example,...

The problem of outliers is well-known in statistics: an outlier is a value that is far from the general distribution of the other observed values, and can often perturb the results of a statistical analysis. Various procedures exist for identifying outliers, in case they need to receive special...

We survey a number of papers that have focused on the construction of cross-country data sets on average years of schooling. We discuss the construction of the different series, compare their profiles and construct indicators of their information content. The discussion focuses on a sample of...

This paper discusses identification problems in the fractionally cointegrated system of Johansen (2008) and Johansen and Nielsen (2012). The identification problem arises when the lag structure is over-specified, such that there exist several equivalent reparametrization of the model associated...

Correspondence analysis, when used to visualize relationships in a table of counts (for example, abundance data in ecology), has been frequently criticized as being too sensitive to objects (for example, species) that occur with very low frequency or in very few samples. In this statistical...