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Dissertation
Exploring and Validating Construct Interpretations of Psychological Measurements
(2024)
In psychological research, as in other scientific disciplines, developing accurate measures of the phenomena under study is fundamental to maintaining the integrity of scientific conclusions. Psychological researchers are often criticized for a lack of rigor when it comes to measurement. On closer inspection, however, these problems may be due not only to the lack of implementation of common standards, but also to fundamental methodological flaws in those standards. Measurement methodology within psychological research ...
Working paper
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Index Archiv für Eisenbahnwesen 1878 bis 1936
(2024)
Der Index der Verkehrszeitschriften aus den Jahren 1878 bis 1942 geben einen Blick in den Aufstieg der Verkehrssysteme des fossilen Kapitalismus und die koloniale Expansion der Eisenbahn nach Asien, Afrika und Lateinamerika. Ohne Eisenbahntransporte wäre eine flächendeckende Versorgung mit dem Brennstoff Kohle unmöglich gewesen, der die Produktionsmaschinen des Industriekapitalismus antrieb. Das Big Oil ermöglichte den Betrieb von Personenkraftwagen und Lastkraftwagen auf einem Straßennetz, das infolge der steigenden ...
Dissertation
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Participatory Governance, Determinants and Networks towards Diffusion and Adoption of Climate Smart Agricultural Technologies in Bangladesh
(2024)
Bangladesch gilt als eines der klimatisch vulnerabelsten Länder der Welt und steht aufgrund des Klimawandels vor großen Herausforderungen in der Landwirtschaft. Sowohl technologische als auch institutionelle Innovationen sind für die Bewältigung dieser Herausforderungen von entscheidender Bedeutung. Climate Smart Agriculture (CSA) zielt darauf ab, die landwirtschaftliche Produktivität zu steigern, sich an den Klimawandel anzupassen und die Treibhausgasemissionen zu verringern. Trotz der großen Aufmerksamkeit für ...
Dissertation
Enhanced Methods for Performance Evaluation and Fault Detection of Concentrating Solar Process Heat Plants
(2024)
Accurate measurements of direct irradiance are required for precise performance analysis and fault detection of concentrating solar process heat plants for industrial processes (CSHIP). For this reason, a cost-effective and low-maintenance pyranometer SPN1 has been investigated by comparing four years minute mean direct normal irradiance measurements of a SPN1 to a reference pyrheliometer at the Institute for Solar Technology SPF in Rapperswil (Switzerland). A significant overestimation of the direct normal irradiance ...
Dissertation
Development of decentralized solar-assisted yogurt processing unit for the production of on-farm high-quality yogurt
(2024)
In Pakistan, the dairy sector represents a significant part of agricultural production and is an important source of income, especially for small farmers. Yogurt production at the farm level is important for adding value to the milk. In this study, a solar-assisted yogurt processing unit capable of performing three processes of heating, fermentation, and cooling in a single unit was developed. It consisted of a circular chamber surrounded by a coil for heating by a solar vacuum tube collector and a pillow plate for ...
Dissertation
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Analyse der direkten elektrischen Kopplung mit aktiver Dämpfung im hybrid-aviatischen Antriebsstrang
(2024)
Die Luftfahrtindustrie steht aktuell unter einem hohen Innovationsdruck. Getrieben von steigenden Passagierzahlen und strengeren Umweltanforderungen befindet sich die Branche in einer Phase intensiver Transformation. Gesellschaftliche Forderungen und internationale Vereinbarungen setzen die Branche zusätzlich unter Druck, ihre Umweltauswirkungen deutlich zu reduzieren. Damit bis zum Jahr 2050 ein CO2-neutraler Flugverkehr möglich ist, müssen die Entwicklungen von innovativen Technologiekonzepten vorangetrieben werden. ...
Aufsatz
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Transformative research for sustainability: characteristics, tensions, and moving forward
(2024-02-14)
Technical summary:
The question of how science can become a lever in achieving the Sustainable Development Goals permeates most recent sustainability research. Wide-ranging literature calling for a transformative approach has emerged in recent years. This ‘transformative turn’ is fueled by publications from fields such as sustainability science, social-ecological research, conservation science, sustainability transitions, or sustainability governance studies. However, there is a lack of a shared understanding ...
Working paper
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Warenströme und Logistik in Mitteleuropa - Die Integrationsleistungen der Logistik im 20. Jahrhundert
(2024)
The article begins with an outline of the concept of logistics in the context of mass consumer society. Based on case studies of the Speicherstadt in Hamburg and the Rhenania warehouse in Mannheim, it describes warehouse management as part of logistics. The article distinguishes between bulk goods and packaged goods. The logistics of bulk goods are illustrated on the basis of Rhine shipping, the oil transport in the oil harbour of Hamburg and railway transport services, while also outlining tensions in railway policy ...
Working paper
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Warenströme in Mitteleuropa – Die Integrationsleistungen der Logistik im 20. Jahrhundert
(2018-09-01)
The paper first explains the concept of logistics in the context of the mass consumer society. It uses the case studies of the Speicherstadt in Hamburg and the Rhenania warehouse in Mannheim to describe warehouse management as part of logistics. The article distinguishes between bulk goods and packaged goods. The logistics of bulk goods are explained by the transport services of Rhine shipping and by the transport services of the railways, with tensions in railway policy between France and Germany being outlined. The ...