RSS 1.0Artikel und Monographien
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2003-06-25ZeitschriftenartikelHow labour organization may affect technology adoption: an analytical framework analysing the case of integrated pest management Integrated Pest Management (IPM) is an important component of sustainable agriculture. Farmers who switch from a more capital-intensive pesticide-based pest management strategy to IPM have to substitute capital with labour. ...
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2014-12-22ZeitschriftenartikelHidden markov structures for dynamic copulae Understanding the time series dynamics of a multi-dimensional dependency structure is a challenging task. Multivariate covariance driven Gaussian or mixed normal time varying models have only a limited ability to capture ...
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2012-01-19ZeitschriftenartikelA consistent nonparametric test for causality in quantile This paper proposes a nonparametric test of Granger causality in quantile. Zheng (1998, Econometric Theory 14, 123–138) studied the idea to reduce the problem of testing a quantile restriction to a problem of testing a ...
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2010-10-11ZeitschriftenartikelOn rate optimality for ill-posed inverse problems in econometrics In this paper we clarify the relations between the existing sets of regularity conditions for convergence rates of nonparametric indirect regression (NPIR) and nonparametric instrumental variables (NPIV) regression models. ...
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2005-04-22ZeitschriftenartikelA note on testing restrictions for the cointegration parameters of a VAR with I(2) variables We give a brief introduction to the vector autoregressive model for cointegrated I(2) variables and show how some plausible economic relations can be formulated in the I(2) framework in such a way that likelihood ratio ...
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2004-12-01ZeitschriftenartikelThe live method for generalized additive volatility models We investigate a new separable nonparametric model for time series, which includes many autoregressive conditional heteroskedastic (ARCH) models and autoregressive (AR) models already discussed in the literature. We also ...
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2004-02-10ZeitschriftenartikelBootstrap inference in semiparametric generalized additive models Semiparametric generalized additive models are a powerful tool in quantitative econometrics. With response Y, covariates X,T, the considered model is E(Y |X;T) = G{XTβ + α + m1(T1) + ··· + md(Td)}. Here, G is a known link, ...
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2003-06-06ZeitschriftenartikelNonparametric estimation of homogeneous functions Consider the regression , where and the exact functional form of f is unknown, although we do know that f is homogeneous of known degree r. Using a local linear approach, we examine two ways of nonparametrically estimating ...
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2002-05-17ZeitschriftenartikelEstimation in an additive model when the components are linked parametrically Motivated by a nonparametric GARCH model we consider nonparametric additive autoregression models in the special case that the additive components are linked parametrically. We show that the parameter can be estimated with ...
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2002-05-16ZeitschriftenartikelTesting for a unit root in a time series with a level shift at unknown time Unit root tests for time series with level shifts of general form are considered when the timing of the shift is unknown. It is proposed to estimate the nuisance parameters of the data generation process including the shift ...
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2002-09-24ZeitschriftenartikelOn the Properties of Some Tests for Common Stochastic Trends We study the asymptotic properties of the tests suggested by Choi and Ahn (1995, Econometric Theory 11, 952–983) in the case of a (nearly) improper normalization of the cointegration vectors. To overcome the size problems ...
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2000-06-01ZeitschriftenartikelTesting for the cointegrating rank of a var process with an intercept Testing the cointegrating rank of a vector autoregressive process with an intercept is considered. In addition to the likelihood ratio (LR) tests developed by Johansen and Juselius (1990, Oxford Bulletin of Economics and ...
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2012-04-17ZeitschriftenartikelThe adaptation and well-being of adolescent immigrants in Greek schools: A multilevel, longitudinal study of risks and resources This study examined growth patterns in adaptation of immigrant youth from a risk and resilience perspective. Students from first- and second-generation immigrant families living in Greece and their nonimmigrant classmates ...
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2009-10-14ZeitschriftenartikelChanging dynamics in problematic personality: A multiwave longitudinal study of the relationship between shyness and aggressiveness from childhood to early adulthood The present longitudinal study investigated cascade effects linking the longitudinal trajectories of shyness and aggressiveness between age 4 and 23 and individual differences in this longitudinal relationship. Results ...
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2016-01-13ZeitschriftenartikelGrassroots Transnationalism(s): Franco-German Opposition to Nuclear Energy in the 1970s During the 1970s opposition to nuclear energy was present in countries around the world and thus eminently ‘transnational’. But what did it mean to participate at the grassroots of such a transnational movement and (how) ...
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2012-03-29ZeitschriftenartikelOnce and for all: The encounter between Stalinism and Nazism. Critical remarks on Timothy Snyder's Bloodlands Twenty years ago it would have been unthinkable for a historian to combine the National Socialists’ murderous excesses and programme of extermination with Bolshevik atrocities in a single history. He would have been accused ...
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2020-07-08ZeitschriftenartikelSummands of theta divisors on Jacobians We show that the only summands of the theta divisor on Jacobians of curves and on intermediate Jacobians of cubic threefolds are the powers of the curve and the Fano surface of lines on the threefold. The proof only uses ...
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2017-02-06ZeitschriftenartikelThe extremal secant conjecture for curves of arbitrary gonality We show that the only summands of the theta divisor on Jacobians of curves and on intermediate Jacobians of cubic threefolds are the powers of the curve and the Fano surface of lines on the threefold. The proof only uses ...
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2023-10-02ZeitschriftenartikelControlling the interaction between CaMKII and Calmodulin with a photocrosslinking unnatural amino acid Using unnatural amino acid mutagenesis, we made a mutant of CaMKII that forms a covalent linkage to Calmodulin upon illumination by UV light. Like wild‐type CaMKII, the L308BzF mutant stoichiometrically binds to Calmodulin, ...
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2023-09-11ZeitschriftenartikelEffect of sex on muscle–tendon imbalances and tendon micromorphology in adolescent athletes—A longitudinal consideration Imbalances between muscle strength and tendon stiffness may cause high‐level tendon strain during maximum effort muscle contractions and lead to tendon structural impairments and an increased risk for tendinopathy in ...
