A lack of sufficient diversification in research strategies has been identified as an important problem for delegated research. We show that this problem can be solved by local competition (such as bribery, lobbying, rent seeking, competition at the patent office) among players who apply the...

The seasonal adjustment method proposed by Schlicht (1981) can be viewed as a method that minimizes non-stochastic deviations (perturbations). This interpretation gives rise to a critique of the seasonality criterion used there. A new seasonality criterion is proposed that avoids these...

The paper discusses a new seasonality hypothesis which is one part of a weighted regression approach for the decomposition of a time series into a trend, a seasonal component and an irregular component. It is shown that there exists a regression formulation leading, as in the descriptive...