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Masterarbeit
Free decay testing of a semisubmersible offshore floating platform for wind turbines in model scale
(2017-12-20)
Wind turbines can be installed on floating platforms in order to use wind resources, which blow above the deep sea. The presented research investigates the hydrodynamic behaviour of the Olav Olsen Concrete Star floater in free decay motion. The floater is a new design of a semisubmersible offshore floating platform for wind turbines. The thesis describes the physical free decay testing of a 1/40 plastic scale model in a water basin as well as numerical simulations of the same test cases with the aero-hydro-servo-elastic ...
Aufsatz
Index-based agricultural insurance products: challenges, opportunities and prospects for uptake in sub-Sahara Africa
(Kassel University Press, 2017-07-25)
Agricultural insurance products have been piloted in Sub-Saharan Africa (SSA) to address climate related risks faced by farmers. However, these products in general face low rates of adoption in SSA. Factors and challenges that may explain the low uptake of index-based insurance products in SSA are reviewed in this paper with the objective of assessing and documenting (i) the insurance products available to farmers, (ii) factors influencing farmers to purchase insurance products, (iii) challenges limiting farmers ...
Working paper
![Open Access](/themes/Mirage2/images/Open_Access_logo_PLoS_transparent.svg)
Dienstleistungen rund um das Automobil.
(2017)
Many contributions to the history of the automobile focus on production. Instead, this paper explores various kinds of services that supports automobile drivers to use their vehicles. The service network consists of automobil dealers, the automobile workshops, fueling stations, tire dealers and garage stations as service centers. The mass production of automobiles was supplemented by mass distribution. A special structure of automobile dealers the automobile producers had to establish. The paper explores the conflicts ...
Preprint
Convergence analysis of time-discretization schemes for rate-independent systems
(2017-12-21)
It is well known that rate-independent systems involving nonconvex energy functionals in general do not allow for time-continuous solutions even if the given data are smooth. In the last years, several solution concepts were proposed that include discontinuities in the notion of solution, among them the class of global energetic solutions and the class of BV-solutions. In general, these solution concepts are not equivalent and numerical schemes are needed that reliably approximate that type of solutions one is ...
Preprint
Balanced Viscosity solutions to a rate-independent system for damage
(2017-05-02)
This article is the third one in a series of papers by the authors on vanishing-viscosity solutions to rate-independent damage systems. While in the first two papers [KRZ13, KRZ15] the assumptions on the spatial domain $\Omega$ were kept as general as possible (i.e. nonsmooth domain with mixed boundary conditions), we assume here that $\partial\Omega$ is smooth and that the type of boundary conditions does not change. This smoother setting allows us to derive enhanced regularity spatial properties both for the ...
Aufsatz
Global Peasants Rights: International Congress 2017
(Department of Organic Food Quality and Food Culture at the University of Kassel, Germany and Federation of German Scientists (VDW), 2017-06)
“Reaffirming that all human rights are universal, indivisible, interrelated, interdependent and mutually reinforcing and must be treated in a fair and equal manner, on the same footing and with the same emphasis, and recalling that the promotion and protection of one category of rights should never exempt States from the promotion and protection of the other rights, recognizing the special relationship and interaction between peasants and other people working in rural areas, and the land, water, nature and territory ...
Teil eines Buches
Die Fragilität des Körpers
(transcript, 2017)
Schwere Krankheiten, Beeinträchtigungen und Behinderungen werden im öffentlichen wie auch fachlichen Diskurs um Sterbehilfe immer wieder als Begründung benutzt, für die Ermöglichung des ärztlich assistierten Suizids zu plädieren – mit dem Argument, ein entsprechendes Leben sei letztlich „nicht menschenwürdig“. Doch Menschenwürde hat jeder Mensch, bzw. jedem Menschen wird Menschenwürde in den internationalen Menschenrechtsabkommen zugesprochen. Die Achtung der Menschenwürde hat den Stellenwert einer unhintergehbaren ...
Masterarbeit
Marketingstrategien zu In-Wert-Setzung von Naturschutzmaßnahmen in der ökologischen Direktvermarktung
(2017-01-31)
Forschungsgegenstand der Arbeit sind Marketingstrategien zur In-Wert-Setzung von Naturschutzmaßnahmen in der ökologischen Direktvermarktung. Vor diesem Hintergrund wurden anhand konkreter Beispiele unterschiedliche Marketingstrategien und Kommunikationskonzepte verglichen und untersucht, wodurch die Aufpreisbereitschaft der KundInnen für den Zusatznutzen „Naturschutz“ beeinflusst wird. Die Untersuchungen fanden zwischen November 2015 und Januar 2016 auf drei Höfen, die Naturschutzmaßnahmen in die ökologische ...
Dissertation
Development of UNCD-based multielectrode arrays for neuronal measurements
(2017-07-26)
The work in hand will show how some of diamond’s extraordinary features can be utilized in bio-applications especially for in vitro cultures of neuronal cells. Diamond has proven itself as an excellent material for bio-applications such as simple fluorescent microarrays over bioFET (field effect transistor) to bioMEMS (microelectro-mechanical systems). The reason does not only lie in its best known properties namely extreme hardness and high refractive index, but in its unique chemistry. As one of the modifications ...
Dissertation
Zweiachsige Hybriderregung von Synchronmaschinen
(2017-04-25)
Neue Anwendungsfelder von geregelten elektrischen Antrieben, wie beispielsweise die Windenergie und die Elektromobilität, führen zu einer stetig steigenden Nachfrage nach wartungsfreien Systemen mit langen Betriebszeiten. Der Preisverfall der Leistungselektronik bei immer höheren Wirkungsgraden ermöglicht durch geeignete Topologien und entsprechende Regelung deutliche Energieeinsparung beim Betrieb elektrischer Antriebe.
In der Elektromobilität stellen im Besonderen gegensinnige Anforderungen, wie hohe Effizienz bei ...