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Now showing items 4331-4340 of 5254
Dissertation
Qualitative und quantitative Schwingungsmessung und -analyse mittels Digital-Shearografie
(2008-11-12)
Speckle Pattern Shearing Interferometrie (Shearografie) ist eine speckle-interferometrische Messmethode und zeichnet sich durch die ganzflächige, berührungslose Arbeitsweise, hohe räumliche Auflösung und hohe Messempfindlichkeit aus. Diese Dissertation beinhaltet die neue bzw. weitere Entwicklung der Shearografie zur qualitativen Schwingungsbeobachtung und zur quantitativen Schwingungsmessung. Für die qualitative Schwingungsbeobachtung in Echtzeit werden die Optimierung des Zeitmittelungsverfahrens und die neue ...
Diplomarbeit
Temperaturbestimmung beim Thermofließlochformen
(2004-05)
Die vorliegende Arbeit beschäftigt sich mit der Ermittlung der beim Thermofließlochformen entstehenden Temperaturen. Im Rahmen dieser Arbeit wurden die Temperaturen während des Bearbeitungsprozesses mittels der berührungslosen Temperaturmesssysteme Pyrometer und Thermografiekamera in Abhängigkeit von Werkstoffsorte, Werkstoffdicke und Werkzeuggeometrie untersucht. Die Untersuchung beinhaltet die Auswertung der Ergebnisse unter Anwendung einer statistischen Versuchsplanung und -auswertung, den Vergleich der gewonnenen ...
Aufsatz
Computational aspects of the symmetric eigenvalue problem of second order tensors
(Institut für Mechanik, Otto-von-Guericke-Universität Magdeburg, 2003)
Aufsatz
Documenting the social and environmental consequences of oil palm plantations in Nicaragua
(Department of Organic Food Quality and Food Culture at the University of Kassel, Germany and Federation of German Scientists (VDW), 2017-12-29)
Palm oil production is expanding in many tropical areas worldwide. The implications for the landscape, social relations and living conditions in the respective areas are the subject of a controversial debate. This article explores the social, economic, and environmental impacts caused by palm oil production in two places in south-eastern Nicaragua: Kukra Hill and Boca de Sábalos. From a theoretical perspective of political ecology, this article reflects on the opportunities and limitations of non-governmental ...
Aufsatz
Urban agriculture: How bottom-up initiatives are impacting space and policies in São Paulo
(Department of Organic Food Quality and Food Culture at the University of Kassel, Germany and Federation of German Scientists (VDW), 2017-12-29)
The growing demand for the creation of urban gardens in large cities has created a discussion about the need for green spaces in cities that fulfil multiple functions. Beyond the production of fresh and healthy food, these spaces should also connect citizens, transform the public space through collective action, and engage the participation of society in the policies and planning for a greener city with a better quality of life. This paper addresses the case of São Paulo specifically and illustrates how urban gardens ...
Aufsatz
The case for citizen science in urban agriculture research
(Department of Organic Food Quality and Food Culture at the University of Kassel, Germany and Federation of German Scientists (VDW), 2017-12-29)
In an uncertain future of climate change and constrained resources, urban agriculture is widely viewed as a sustainable and scalable approach to improving food security. While its social, health and wellbeing benefits are well documented, there is a major knowledge gap in terms of the financial accessibility of urban food production for all households. The implications are far-reaching: if urban agriculture is purely a middle-class discretionary activity, then it will play a limited role in improving food security ...
Aufsatz
Ensuring community and agricultural resiliency to climate change: Ceremonial practices as emic adaptive strategies
(Department of Organic Food Quality and Food Culture at the University of Kassel, Germany and Federation of German Scientists (VDW), 2016-12-23)
This paper is an analysis of emic versus etic approaches to climate change resiliency, taking as a case study the traditional ceremony performed by farmers in eastern Flores, Indonesia to rid their fields of rats. This paper begins by providing a theoretical framework discussion on the dominant etic and emic academic research on monsoons and climate change impacts on agriculture. The rat ceremony performed in villages throughout East Flores is a local custom used to rid agricultural fields of pests—often rats—that ...