2,717 Works

Heat transfer from laminar premixed flames to cylindrical walls: Experimental studies using thermographic phosphors and micro-thermocouples

Peter Obara Oketch
In industrial and domestic heating processes, components of various geometrical configura-tions have to be heated. Impinging flame jets are widely used for these heating processes be-cause of their high heat transfer rates. The heat transfer from the flame to the target body de-pends on many physical and chemical parameters. Whereas the interaction between the unburned gas velocity, the flame speed, and heat transfer to the burner is well understood for laminar flame jets impinging on...

How one fights determines what one wins: (Non)violent resistance in revolutionary situations and its prospects for sustainable democratization

Markus Bayer
The dissertation at hand entiteled “How one fights determines what one wins’ - (Non)violent resistance in revolutionary situations and its prospects for sustainable democratization” deals with the long-term consequences of peaceful resistance in transition processes on the following democracy. The cumulative dissertation consists of six independent, but linked publications. The overarching research question of the dissertation, which unites all papers, is whether and due to which mechanisms different forms of resistance (Modes of Resistance) against...

The Carl Schurz Memorial Professorship at the University of Wisconsin

Michael Kaeding

SOLVITUR AMBULANDO - From Policy Intent to Actions: Policy Innovation for the Higher Education Test and Admission System in China

Weijing Le
The present thesis titled “SOLVITUR AMBULANDO – From Policy Intent to Actions: Policy Innovation for Higher Education Test and Admission System in China”, deals with a policy analysis in the field of admission policies by applying the process tracing method. The policy under investigation is the top-level designed policy innovation for China’s higher education test and admission system in 2014 – “Opinions of the State Council on Deepening Reform to Examinations and Admission System”. Higher...

Laserbasierte Nanopartikelsynthese und Imprägnierung von mesoporösen Katalysatoren, Aerogelen und Polymeren in überkritischem CO2

Marc Labusch
Die vorliegende Arbeit behandelt die Synthese ligandenfreier, poröser Katalysatoren durch die gepulste Laserablation in überkritischem CO2. Die Hauptmotivation besteht darin, die günstigen Transporteigenschaften des überkritischen CO2 auszunutzen, um lasergenerierte Nanopartikel in poröse Trägermaterialien einzubringen. Zeitgleich stellt CO2 ein „grünes“ Prozessmedium dar, welches in Kombination mit dem laserbasierten Verfahren eine nachhaltige Syntheseroute für Trägerkatalysatoren darstellt. Bisherige experimentelle Untersuchungen zur gepulsten Laserablation in überkritischem CO2 führten aufgrund von Instabilitäten der Nanopartikel zu großen Partikeln (< 500 nm)...

Filme zum Schreien, voller Soul und Zuversicht : Maxa Zoller im Interview

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How do Customers Value the Use of Inner City Shopping? An Empirical Analysis

Stephanie Schwipper, Severine Peche & Gertrud Schmitz
The aim of this study is to identify and empirically validate relevant benefits and costs of perceived value in use of an inner city shopping trip. Moreover, we examine the relevance of customers’ value perceptions for four behavioral outcomes. We identified relevant benefit and cost components as well as behavioral outcomes through a literature review and a qualitative pre-study (n=29) and developed a higher-order conceptualization of the perceived value in use. We tested our research...

Chinese Listed National Oil Companies: an Analysis of the Minor Shareholder within an Agency Theory Framework

Stenya Kountourakis
During the period of economic reforms Chinese National Oil Companies (NOCs) became involved in a process of corporatization. This led to an Initial Public Offering (IPO) of three major Chinese NOCs in the beginning of 2000. After the IPO, along with the State as a major shareholder, Chinese NOCs obtained private shareholders. In a framework of an Agency theory one concludes that Chinese listed NOCs as Agents obtained Multiple Principals (State and Private Shareholders). This...

Atomic layer deposition of Manganese oxide on Carbon substrate for electrocatalytic water splitting

Sakeb Hasan Choudhury
Stability is one of the key issues that determine the applicability of catalysts in industrial application. In this thesis, a composite heterogeneous catalyst was synthesized and its stability was scrutinized in electrocatalytic water splitting conditions. The conventional preparation of drop coating the electrocatalyst on glassy carbon was interchanged with Atomic layer deposition (ALD) to incorporate covalent interaction of the electrocatalyst with the carbon substrate. Manganese oxide was chosen for the Atomic layer deposition process to...

Mentoring an der Medizinischen Fakultät der Ruhr-Universität Bochum – mQuadrat[at]RUB

Katrin Marcus, Marie Lutz & Helga Rudack

„Top or Token?“ – Frauen in SpitzenPositionen

Doris Lucke

Fachkultur und Vergeschlechtlichung im Visier

Edyta Joanna Łukaszuk

„Ich wünsche mir Solidaritätsaktionen von den Frauen, die in der Wissenschaft erfolgreich sind.“: Anke Brunn und Svenja Schulze im Gespräch

Susanne Keil

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Journal Netzwerk Frauen- und Geschlechterforschung NRW, vol. 2011, no. 28

Wissenschaftlicher Mittelbau – privilegiert und prekär?

Christina Möller

Sexualität und Macht in pädagogischen Kontexten: Tagung am 03. und 04.02.2011 in Berlin

Julia Siemoneit & Karla Verlinden

„Nur wer quer denkt, kann die Richtung ändern“: Zur Preisverleihung der Stiftung „Aufmüpfige Frauen“ an Shaima Ghafury am 24.09.2010 in Dortmund

Ute Zimmermann, Felizitas Sagebiel & Sigrid Metz-Göckel

Combining Heuristics and Machine Learning for Hybrid Flow Shop Scheduling Problems

Miriam Zacharias
This dissertation presents a new generic scheduling approach to makespan and flowtime minimization in hybrid flow shops with unrelated machines. In addition, possibilities of utilizing machine learning tools in job scheduling are explored.The proposed scheduling approach is twofold. First, a new heuristic based on the divide et impera strategy is introduced, that can be optionally enhanced by different local search improvement schemes. Moreover, several parameters are provided that enable a trade-off between solution quality and...

Laser generated magneto-plasmonic Fe-Au Nanoparticles: Formation, Real Structure and Properties

Anna Piatek
Gold-iron binary alloy nanoparticles delivering next to magneto-plasmonic properties, surface available for the bio-conjugation. The combination of noble and less expensive metal such as nickel, iron or cobalt, is a widespread tool for a biomedical application like MRI/optical-dual imaging or photothermal therapy. For this purpose, the laser-generated nanoparticle is advantageous due to control over the atomic composition and alloying degree. Nevertheless, properties of such nanomaterials are morphology dependent. Hence, synthesis of various structures such as...

Von der Frauenförderung zum umfassenden Personalentwicklungskonzept

Renate Petersen

Geschlechterforschung zu Japan: Intersektionalität – Arten von Differenzen: Gender-Workshop vom 19.–20. November 2009 in Berlin

Julia Siep

Konzeption, Durchführung und Evaluation eines Trainings zur Verbesserung der Studierfähigkeit in den Lehramtsstudiengängen

Vasilena Beckmann
In der vorliegenden Arbeit wird die Konzeption, Durchführung und die Evaluation eines Trainings zur Verbesserung der Studierfähigkeit in den Lehramtsstudiengängen beschrieben. Die Ziele des Trainings sind die Vermittlung von allgemeinen Kompetenzen (Stress- und Zeitmanagement) und studienrelevanten Arbeitstechniken (Lerntechniken, Arbeit mit wissenschaftlichen Texten, Vor- und Nachbereitung von Veranstaltungen, Erstellung von wissenschaftlichen Ausarbeitungen, Vorbereitung von Vorträgen), die reflektierende Auseinandersetzung mit den prospektiven Tätigkeiten einer Lehrkraft sowie eine stärkere Vernetzung unter den Studierenden. Im Anschluss findet eine empirische...

Environmental Forensics of Industrial Wastewater based on Non-Target Screening

Kirsten Purschke

GehälterUngleichheit und GeschlechterGerechtigkeit

Doris Lucke

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