Successive photoswitching and derivatization effects in photochromic dithienylethene-based coordination cages See

A new series of [Pd2(L)4] cages based on photochromic dithienylethene (DTE) ligands allowed us to gain insight into the successive photoswitching of multiple DTE moieties in a confined metallo‐supramolecular assembly. Three new X‐ray structures of [Pd2(o‐L4)4], [Pd2(o‐L1)2(c‐L1)2] and [Pd2(c‐L1)4] (o‐L and c‐L = open and closed forms of DTE ligands, respectively) were obtained. The structures deliver snapshots of three different combinations of DTE photoisomeric states within the cage, facili...

Combination between land suitability evaluation and multi-objective optimization mathematics model to sustainable agricultural land use planning in the coastal zone of the Mekong Delta, Viet Nam See

Land evaluation is the primary content in the land-use planning process. There were many land evaluation methods which have been improved based on the FAO framework, but most of them have not been effectively assessed. The requirements of land characteristics and physical conditions supply a common view of land use types for land suitability. It is difficult in precise decision making for agricultural planning. Decision makers have to optimize productive agriculture and promote farmers’ socio...

Chiral self-discrimination and guest recognition in helicene-based coordination cages See

Chiral nanosized confinements play a major role for enantioselective recognition and reaction control in biological systems. Supramolecular self‐assembly gives access to artificial mimics with tunable sizes and properties. Herein, a new family of [Pd2L4] coordination cages based on a chiral [6]helicene backbone is introduced. A racemic mixture of the bis‐monodentate pyridyl ligand L1 selectively assembles with PdII cations under chiral self‐discrimination to an achiral meso cage, cis‐[Pd2L1P2...

Fourth-order spin correlation in doped semi-conductor quantum dots See

This thesis focuses on fourth-order spin correlation functions in semi-conductor quantum dots. Widely studied are the second order spin noise power spectrum and its counterpart in the time domain. However, the information extracted from the second order correlation function is limited, and it stands to reason that higher order correlators carry additional physics. The best and most accessible option to study higher order statistics are fourth order correlators. These can be observe...

Amtliche Mitteilungen der Technischen Universität Dortmund See

Financial risk measures for a network of individual agents holding portfolios of lighttailed objects See

We investigate a financial network of agents holding portfolios of independent light-tailed risky objects whose losses are asymptotically exponentially distributed with distinct tail parameters. We show that the asymptotic distributions of portfolio losses belong to the class of functional exponential mixtures which we introduce in this paper. We also provide statements for Value-at-Risk and Expected Shortfall risk measures as well as for their conditional counterparts. Compared to heav...

Die Leseförderung „Levumi und Braunidra auf der Suche nach Goldstaub“ für die zweite Jahrgangsstufe See

Untersuchungen zur Implementierung des Direct Behavior Ratings „PUTSIE“ in einer inklusiven Grundschule. Verhaltensverlaufsdiagnostik in der Praxis See

Entwicklung und Evaluation der Lesefördermaterialien „Die Abenteuer von Levumi und Malini“ See

Entwicklung und Evaluation des datenbasierten Förderkonzepts „Levumi im Dschungel“ See

Beitrag zur Untersuchung partnerschaftlicher Gegengeschäfte See

Unternehmen sind permanent an Wachstum und neuen Kunden interessiert. Weitere Absatzmöglichkeiten zu erschließen ist neben technologischer Entwicklung die allgegenwärtige Herausforderung der Unternehmensführung. Dabei ist es bereits schwer genug, Unternehmen nachhaltig zu führen und am Markt zu bestehen. Einerseits müssen produzierende Unternehmen ihre Produkte zunehmend unter harten, internationalen Wettbewerbsbedingungen herstellen und immer öfter gegen Waren aus so genannten Billiglohnländ...

Vertrauen in mobile Applikationen See

Die Nutzung von Apps setzt auf Seiten der Nutzer*innen Vertrauen in die Datensicherheit und Nützlichkeit der App voraus. Da Apps einer zunehmenden Nutzung unterliegen und darüber hinaus ein mögliches Instrument zur Echtzeitsteuerung komplexer Systeme darstellen können, besteht sowohl aus Sicht der Soziologie als auch aus einer Governance-Perspektive ein Interesse an Erkenntnisgewinn hinsichtlich der Mensch-App-Interaktion. In diesem Arbeitspapier wird besagte Interaktion daher modelliert un...

A new approach for open-end sequential change point monitoring See

We propose a new sequential monitoring scheme for changes in the parameters of a multivariate time series. In contrast to procedures proposed in the literature which compare an estimator from the training sample with an estimator calculated from the remaining data, we suggest to divide the sample at each time point after the training sample. Estimators from the sample before and after all separation points are then continuously compared calculating a maximum of norms of their differences...

Musikgeschichte ohne Markennamen See

Do teachers' beliefs about math aptitude and brilliance explain gender differences in children's math ability self-concept? See

The self-concept of ability in math in elementary school is an early predictor for future math-related choices and careers. Unfortunately, already at this early age girls report lower ability self-concepts in math than boys—despite their comparable performances in objective math competence tests. In the present study we focus on teachers' beliefs as factors explaining these gender differences. Women's underrepresentation in math and science in academia has recently been explained by the belie...

Integrated forming and surface engineering of disc springs by inducing residual stresses by incremental sheet forming See

Disc springs are conical annular discs, which are characterized by a high spring force with a small spring travel and good space utilization. In operation, they must meet high demands on the stability of the spring characteristic and the fatigue strength. Under loading, tensile stresses occur which limit the possible applications of disc springs. Compressive stresses can be generated in the stressed areas by means of shot-peening in order to extend the operating limits for a given yield and f...

Lineare Inverse Probleme See

Wirtschaftliche Aktivität und Emissionen: Die Umweltkuznetskurve See

Seit dem Beginn der industriellen Revolution ist die mittlere globale Temperatur um circa ein Grad Celsius gestiegen. Es steht außer Zweifel, dass dieser Anstieg wesentlich auch durch menschliche Aktivitäten getrieben ist - durch Emissionen von Kohlenstoffdioxid und anderen Treibhausgasen. Wie sehen die Zusammenhänge zwischen wirtschaftlicher Aktivität und Emissionen aus? Steigen die Emissionen zwingend mit steigender wirtschaftlicher Aktivität? In diesem Kapitel wollen wir einige grundl...

Evaluation of land cover change and agricultural protection sites: a GIS and Remote Sensing approach for Ho Chi Minh City, Vietnam See

Ho Chi Minh City (HCMC), economic center and most populous city of Vietnam faces a strong structural change since its market liberalization in the late 1980s. Big challenges occur in the form of uncontrolled urban sprawl due to rapid population growth with encroachment of agricultural land, which leads to environmental and climatic issues like urban heat island effects, air pollution and flooding events. Remote Sensing and Geographic Information Systems (GIS) provide new computer-based techno...