Geschlechterspezifische Unterschiede in der Entwicklung von Leseflüssigkeit und sinnentnehmendem Lesen hinsichtlich zusätzlicher Fördermaßnahmen im Rahmen einer Längsschnittuntersuchung in drei Grundschulklassen der Jahrgangsstufe zwei in Levumi See

Analyse der Anpassungskapazität der Regionalplanung an den Klimawandel See

KURZFASSUNG Unter dem Begriff Klimawandel wird die menschengemachte Veränderung des globalen Klimas verstanden. Der Klimawandel äußert sich durch langfristige, irreversible Veränderungen von Klimaparametern wie Temperatur und Niederschlag und führt zu einem häufigeren Auftreten von extremen Wetterereignissen (vgl. DWD 2014a). Die regional unterschiedlich ausgeprägten Auswirkungen des Klimawandels haben gemein, dass sie auf anthropogene Raumnutzungen treffen, die diesen Auswirkungen gegenüber...

Generalized sign tests based on sign depth See

We introduce generalized sign tests based on K-sign depth, shortly denoted by K-depth. These so-called K-depth tests are motivated by simplicial regression depth. Since they depend only on the signs of the residuals, these test statistics are easy to comprehend and outlier robust. We show that the K-depth test with K = 2 is equivalent to the classical sign test so that K-depth tests with K > 2 are generalizations of the classical sign test. Since the K-depth test with K = 2 is equivalen...

A quasi-optimal Crouzeix-Raviart discretization of the Stokes equations See

A generalized method of moments estimator for structural vector autoregressions based on higher moments See

I propose a generalized method of moments estimator for structural vector autoregressions with non-Gaussian shocks. The shocks are identified by exploiting information contained in higher moments of the data. Extending the standard identification approach, which relies on the shocks' covariance, to the shocks' coskewness and cokurtosis allows to identify the simultaneous interaction without any further restrictions. I analyze the estimator's performance depending on the co-moments used ...

Optimal designs for series estimation in nonparametric regression with correlated data See

In this paper we investigate the problem of designing experiments for series estimators in nonparametric regression models with correlated observations. We use projection based estimators to derive an explicit solution of the best linear oracle estimator in the continuous time model for all Markovian-type error processes. These solutions are then used to construct estimators, which can be calculated from the available data along with their corresponding optimal design points. Our results are ...

Goodness-of-fit testing the error distribution in multivariate indirect regression See

We propose a goodness-of-fit test for the distribution of errors from a multivariate indirect regression model. The test statistic is based on the Khmaladze transformation of the empirical process of standardized residuals. This goodness-of-fit test is consistent at the root-n rate of convergence, and the test can maintain power against local alternatives converging to the null at a root-n rate.

Modellierung nichtlinearer Eigenschaften von ESD-Schutzelementen See

Elektrostatische Entladungen stellen ein großes Risiko für die Elektronik dar. Eine simulationsgestützte Optimierung hilft, die ESD-Risiken bereits in einer frühen Entwicklungsphase zu erkennen und geeignete Gegenmaßnahmen einzuleiten. Die Güte des Simulationsergebnisses ist direkt mit den Modellen einzelner Komponenten verknüpft. Einen besonderen Stellungswert nehmen dabei die ESD-Schutzelemente ein. In der vorliegenden Arbeit wird eine systematische Methode zur Charakterisierung und Modelli...

Chemical tools for protein analysis: development of an MS-cleavable cross-linker and a new approach for glycopeptide enrichment See

The technological development in analytical methods, especially in chromatography and mass spectrometry, has allowed a deeper understanding of biological systems at a molecular level. Characterization and quantification of biomolecules and its modifications are crucial for comprehension of the entire biological machinery. However, additional bioanalytical methods are needed to gain more detailed information about protein structure, dynamic protein complexes and low abundant protein modificati...

MgO/Co/GaAs(001) - an interface analysis by means of XPS and XPD See

Diese Arbeit befasst sich mit den Oberflächen- und Grenzflächeneigenschaften des Mehrschichtsystems MgO/Co/GaAs(001) im Bezug auf Struktur und chemische Bindungen. Im gesamten Forschungsfeld der Spintronik findet sich dieses Schichtsystem wieder, wobei der magnetische Tunnelwiderstand (TMR) als fundamentales Phänomen genutzt wird. Da dieser Effekt sehr empfindlich auf die Grenzfläche von Heterostrukturen reagiert, sind die Photoelektronenspektroskopie (XPS) und die Photoelektronenbeugun...

Engineering novel TALE repeats for the selective and direct detection of epigenetic cytosine modifications See

Genetic information within a cell is stored in the nucleotide sequence of deoxyribonucleic acid (DNA). In a multicellular organism, all somatic cells contain the same genetic material i.e. have the same genotype. Nevertheless, they can differ greatly in their morphologies and functions, which is commonly attributed to a differentiated pattern of gene expression. Responsible for the formation of a cell´s specific phenotype are epigenetic modifications, which act as an additional layer of i...

Lernen in Pluralität durch Diskurs im Religionsunterricht der Grundschule See

Reflection in novice English teacher development: a future perspective See

Die vorliegende qualitative Forschungsstudie untersuchte die Reflexionen von vier unerfahrenen Lehrern für Englisch als Fremdsprache. Die Datenerhebungsinstrumente umfassten semi-strukturierte Interviews, ausführliche Interviews, schriftliche Tagebücher und Beobachtungen, Video- und Tonaufnahmen, Transkripte sowie andere Dokumente. Die erste Frage der Studie analysierte Daten hinsichtlich des Konzepts der Reflexion sowie reflektierender Praktiken. Die Ergebnisse zeigen, dass die Teilnehmer k...

A similarity measure for second order properties of non-stationary functional time series with applications to clustering and testing See

Due to the surge of data storage techniques, the need for the development of appropri-ate techniques to identify patterns and to extract knowledge from the resulting enormous data sets, which can be viewed as collections of dependent functional data, is of increasing interest in many scientific areas. We develop a similarity measure for spectral density oper-ators of a collection of functional time series, which is based on the aggregation of Hilbert-Schmidt differences of the individual time...

Aliasing effects for random fields over spheres of arbitrary dimension See

In this paper, aliasing effects are investigated for random fields defined on the d-dimensional sphere Sd, and reconstructed from discrete samples. First, we introduce the concept of an aliasing function on Sd. The aliasing function allows to identify explicitly the aliases of a given harmonic coefficient in the Fourier decomposition. Then, we exploit this tool to establish the aliases of the harmonic coefficients approximated by means of the quadrature procedure named spherical uniform samp...

Increased market transparency in Germany’s gasoline market: The death of rockets and feathers? See

Drawing on a consumer search model and a unique panel data set of daily fuel prices covering over 5,000 fuel stations in Germany, this paper documents a change in the price setting behavior of retail gas stations following the introduction of a legally mandated on-line price portal. Prior to the introduction of the portal in 2013, positive asymmetry is found on the basis of error correction models, with prices following the “rockets and feathers” pattern documented in many commodity mark...

Konzeptionelle Perspektiven von Arbeit in der digitaliserten Logistik See

Projektabschlussbericht - Fertigung von Aluminiumprofilen mit kontinuierlicher Verstärkung See

Game theoretical analyses of industrial and societal organization See