Showing 1 - 10 of 77
The formation and the diversity of most types of organizations goinginternational are well researched. However, some aspects of postmodernlife, such as sports and entertainment, are presently growing in importanceand management complexity.
Persistent link: https://www.econbiz.de/10005850189
scant. We evaluate a national teacher development program in Sweden - the 'Boost for Mathematics' - containing core elements …' mathematics performance. The positive effect on student performance persists also long after the intervention has ended. In …
Persistent link: https://www.econbiz.de/10013394336
In this paper, we decompose worldwide PISA mathematics and reading scores. While mathematics scores are still tilted … towards boys, girls have a larger advantage in reading over boys. Girls' disadvantage in mathematics is increasing over the …
Persistent link: https://www.econbiz.de/10011916770
Persistent link: https://www.econbiz.de/10001510973
The imprecise Beta model (IBM) of Bernard (1996) and Walley (1996) is the most popular model for learning about a binomial random variable under prior ignorance. Piatti et al. (2005) show that there is a fundamental issue with the interpretation of results produced by the IBM in applications....
Persistent link: https://www.econbiz.de/10005858357
support of the distribution and are vastly superior to existing approximations. An application in finance is considered which …
Persistent link: https://www.econbiz.de/10005858504
The recently proposed class of MixN-GARCH models, which couple a mixed normal distributional structure with linked GARCH-type dynamics, has been shown to offer a plausible decomposition of the contributions to volatility, as well as admirable out-of-sample forecasting performance, for financial...
Persistent link: https://www.econbiz.de/10005858753
We consider consistent tests for stochastic dominance efficiency at any order of a given portfolio with respect to all possible portfolios constructed from a set of assets. We justify block bootstrap approaches to achieve valid inference in a time series setting. The test statistics are computed...
Persistent link: https://www.econbiz.de/10005858776
A generalized correlated random walk is a process X_k of partial sums of random variables Y_j such that (X,Y) forms a Markov chain. For a sequence X^n of such processes where each Y^n_j takes only two values, we prove weak convergence to a diffusion process whose generator is explicitly...
Persistent link: https://www.econbiz.de/10005858866
We study a test statistic based on the integrated squared difference between a kernel estimator of the copula density and a kernel smoothed estimator of the parametric copula density. We show for fixed smoothing parameters that the test is consistent and that the asymptotic properties are driven...
Persistent link: https://www.econbiz.de/10005858871