This work studies implicitly weighted robust statistical methods suitable for econometric problems. We study robust estimation mainly for the context of heteroscedasticity or high dimension, which are up-to-date topics of current econometrics. We describe a modification of linear regression...

We focus on changes in dynamic correlation during the recent fi nancial crisis. The results show different responses to this symmetric shock in V4 countries. We discuss possible specialization if the dynamic correlation increases only at certain of the frequencies. Especially, in case of the...

We introduce a structural model of procurement auctions with incomplete contracts, where a procurer chooses an initial project specification endogenously. The contract between the procurer and the winner of the auction is incomplete in that the two parties may agree to adopt a new feasible...

We analyze the effects of an ALMP for disadvantaged workers implemented in a depressed area of Italy. Using propensity-score matching, we find that a) the employment subsidy had a positive effect for participants on both the probability of finding a job and income, b) the outcome of the policy...

We show that spline and wavelet series regression estimators for weakly dependent regressors attain the optimal uniform (i.e., sup-norm) convergence rate (n/log n)^{-p/(2p+d)} of Stone (1982), where d is the number of regressors and p is the smoothness of the regression function. The optimal...

This paper derives asymptotic power functions for Cramer-von Mises (CvM) style tests for conditional moment inequality models in the set identified case. Combined with power results for Kolmogorov-Smirnov (KS) tests, these results can be used to choose the optimal test statistic, weighting...

I propose a new theoretical framework to assess the approximate validity of overidentifying moment restrictions. Their approximate validity is evaluated by the divergence between the true probability measure and the closest measure that imposes the moment restrictions of interest. The divergence...

Landschaften stellen ein wesentliches Grundkapital des Tourismus dar, die Auswirkungen einzelner Landnutzungsformen auf den ländlichen Tourismus sind aber noch weitgehend unklar. Die vorliegende Studie untersucht den Einfluss verschiedener Landnutzungsformen auf den ländlichen Tourismus unter...

Die Schweiz gehört weltweit zu denjenigen Ländern mit der höchs-ten Agrarstützung. Dabei trägt die Bevölkerung die Kosten, als Steuerzahler und als Konsument. Ihre Unterstützungsbereitschaft ist abhängig von ihrer Wertschätzung gegenüber der Landwirt-schaft und deren Leistungen, aber...

This study supplies new evidence regarding the predictive power of jumps for conditional market returns and volatilities. We change the constant jump intensity as in the Liu et al. and Du models with time-varying intensity following an autoregressive conditional jump intensity process and a...