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Zeitschrift
Jahresbericht 2020
(Universität Kassel, Fachbereich Wirtschaftswissenschaften, 2021)
Zeitschrift
Jahresbericht 2009/2010
(Universität Kassel, Fachbereich Wirtschaftswissenschaften, 2011)
Konferenzveröffentlichung
On the Challenges toward Realization of Functionally Graded Structures by Electron Beam Melting—Fe-Base Shape Memory Alloy and Stainless Steel
(ASTM International, 2020-09-22)
In the present study, an iron-manganese-aluminum-nickel (Fe-Mn-Al-Ni) shape memory alloy was processed on an austenitic steel (AISI 304) build platform by electron beam melting in order to study the feasibility of realizing functionally graded structures consisting of two different materials (i.e., a functional and a structural material). Compression specimens consisting of the processed shape memory alloy and the austenitic build platform in equal parts were investigated. The microstructure was analyzed in the ...
Aufsatz
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Investigation of residual stresses in polypropylene using hot plate welding
(2020-08-05)
During the cooling process of the molten material, residual stresses appear because the reduced volume of the cooled material cannot fully fill the space formerly occupied by the molten material. The morphology in and around the weld is formed by different factors depending on the material and process parameters. Different morphological structures relate to different mechanical properties. The process parameters and the welding results including morphology and residual stress are linked together. In this article, ...
Dissertation
A Unifying Theory for Runge-Kutta-like Time Integrators: Convergence and Stability
(2024)
The work deals with two major topics concerning the numerical analysis of Runge-Kutta-like (RK-like) methods, namely their stability and order of convergence. RK-like methods differ from additive RK methods in that their coefficients are allowed to depend on the solution and the step size. As a result of this, we also refer to them as non-standard additive RK (NSARK) methods. We motivate and introduce modified Patankar (MP) schemes as a subclass of NSARK methods and emphasize their importance. The first major part ...
Dissertation
Immobilization of Neodymium Complexes on Semiconductor Surfaces and Processing of GaAs-based Photonic Crystals
(2024)
Lanthanide ion luminescence exhibits characteristic narrow emission bands ranging from VIS to NIR along with relatively long emission lifetimes which makes them attractive for applications in lighting, sensing, and display technologies. The focus of this dissertation lies on the optical characterization of newly synthesized neodymium complexes bearing phosphonate ester ligands and the fabrication of photonic crystal (PhC) cavities. Micro-photoluminescence (PL) spectroscopy is used to investigate the NIR emission bands ...
Dissertation
New Approaches for the Quantification of Metabolic and Economic Trade-Offs Related to the Health and Longevity of Individual Dairy Cows
(2024)
Background: In dairy cows, negative associations between the genetic merit for milk yield and fitness traits as well as a lack of success in lowering the prevalence of production diseases have been noticed over the past 30 years across different production methods, herd sizes and countries. On the other hand, individual farms and individual cows within a farm succeed in simultaneously achieving high performance, low prevalence and high profitability, while others cannot cope with these challenges. Differences in milk ...
Teil eines Buches
Aufgabenorientiertes Lernen im Fremdsprachenunterricht: Beispiele zur Förderung kognitiver, metakognitiver und sozioaffektiver Lernprozesse
(Waxmann, 2008)
Dieser Beitrag geht von der Prämisse aus, dass aufgabenorientiertes Fremdsprachenlernen
(task-based language learning, TBLL) Katalysatorwirkung hat auf kognitive, metakognitive und sozioaffektive Lernprozesse. Nachdem auf die Rahmenbedingungen fremdsprachlichen Lehrens und Lernens eingegangen wird, findet eine Erörterung der Entwicklung auf gaben orientierten Lernens statt. Die Prinzipien aufgabenorientierten Lernens werden dargelegt und die Umsetzung dieses Konzeptes in verschiedene Sequenzen und Zyklen wird erklärt. ...
Teil eines Buches
Brands and branding in the non-profit sector − theoretical overview and discussion
(Publishing House of the University of Economics, 2015)
Branding has been acknowledged as a fundamental function for companies (e.g. Aaker & Shansby 1982: 56; Ambler et al. 2002: 13; Doyle 1990: 5; Gardner & Levy 1955; Grönroos 2007; Homer 2008; Keller 1993). A brand may be explained as an entirety of perceptions and feelings that consumers associate with a product/service recognized by a brand name. Included are aspects like distinctiveness (e.g., its packaging and logos), quality, performance, familiarity and user imagery (e.g. Batra, Ahuvia & Bagozzi 2012). Brands ...
Dissertation
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Drivers for Fostering Agroforestry Systems in Temperate and Mediterranean Climates: Past, Present, and Future
(2024)
Traditional multifunctional agroforestry landscapes provide not only food but also support biodiversity and provide a multitude of ecosystem services. However, such landscapes have been frequently lost in the last decades. Given the multiple global challenges that have emerged from an industrial model of agriculture, agroforestry as a concept based on multifunctionality is increasingly regarded as key for sustainable food production systems of the future. To guide future land management and policies, past land-use ...