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Buch
Social Security Expansion in the South: From Welfare Regimes to Implementation
(Reiner Hampp Verlag, 2019)
The profound lack of social security for much of the world's population is increasingly recognised as a problem, both in policy making and in social sciences. Many new national and international policy initiatives aim at the expansion of social security and social protection in countries of the Global South. Correspondingly, academia is discussing the specific Southern nature of welfare arrangements and regimes, as well as the design of social protection systems. This book studies India as an exemplary case of social ...
Dissertation
Determinants of resource use and use efficiency in urban and peri-urban dairy, beef cattle and pig production units in Ouagadougou, Burkina Faso (West Africa)
(2019)
The (peri-) urban demand for food of animal origin is increasing in sub-Saharan Africa as a result of the rapidly growing population and urbanisation. Livestock production in the vicinity of West African cities is well established but currently undergoes changes triggered by key transforming factors such as access to resources, production management related to famers' knowledge or know-how, increasing demand for livestock and/or animal products, policies and the legal framework in which livestock production systems ...
Dissertation
Untersuchungen und Modellierungsansatz zum Einfluss der Stärkesorte und Stärkemenge auf die strukturellen Eigenschaften von Biskuitmassen
(2019)
In der vorliegenden Arbeit wird der Einfluss verschiedener Stärkesorten und Stärkemengen auf die Struktur von Biskuitrohmassen und der gebackenen Produkte untersucht. Dabei wird der Faktor Sorte in sieben Stufen untersucht: Kartoffel, Mais, Wachsmais, Reis, Wachsreis, Weizen und Tapioka. Der Faktor Stärkemenge wird in drei Stufen (60g / 75g / 90g) untersucht. Die Herstellung der Massen erfolgt zum einen nach traditioneller Rezeptur und zum anderen im modernen All-In Verfahren mit der Zugabe von Emulgator.
Die ...
Dissertation
Energy transfer in free-standing van der Waals heterostructures after optical excitation
(2019)
The wide range of layered van der Waals materials is interesting due to its plenty of deviating characteristics. The structure of all these materials is built from covalently joined layers, which are stacked by van der Waals forces. Aside from this structural similarity the specific characteristics spread out in a variety of electronic and optical properties. The electronic properties of layered materials vary from pure insulators to metallic conductors and can even depend on the number of layers. In the work presented ...
Dissertation
Ab-initio analysis of the structural response of solids after femtosecond-laser-pulse excitation
(2019)
After an intense femtosecond-laser excitation extreme non-equilibrium conditions are induced in materials. The high photon density in such an ultrashort-laser pulse interacts directly with the electronic system of the material. By absorbing the photon energy the electrons are excited in high energy states, where they form a non-equilibrium distribution shortly after the excitation. Due to fast electron-electron scattering and cascading processes equilibrates the electronic system within several femtoseconds to a ...
Preprint
Large-scale heat pumps: market potential and barriers, classification and estimation of efficiency
(2019-12-20)
Heat pumps powered by renewable electricity have a significant potential to become a critical technology to disruptively decarbonize an economy. An essential step towards this goal is the development of an accurate understanding and model of how heat pumps in large-scale implementations perform in terms of economics, energy, and the environment. In this study, the influence of system design and operating conditions on the Coefficient of Performance (COP) of large-scale (> 50 kWth) electric driven mechanical compression ...
Konferenzveröffentlichung
Classifying Smart Personal Assistants: An Empirical Cluster Analysis
(University of Hawaii at Manoa, Hamilton Library, ScholarSpace, 2019)
The digital age has yielded systems that increasingly reduce the complexity of our everyday lives. As such, smart personal assistants such as Amazon’s Alexa or Apple’s Siri combine the comfort of intuitive natural language interaction with the utility of personalized and situation-dependent information and service provision. However, research on SPAs is becoming increasingly complex and opaque. To reduce complexity, this paper introduces a classification system for SPAs. Based on a systematic literature review, a ...
Konferenzveröffentlichung
Alexa, Can You Help Us Solve This Problem? How Conversations With Smart Personal Assistant Tutors Increase Task Group Outcomes
(Association for Computing Machinery, 2019)
Despite a growing body of research about the design and use of Smart Personal Assistants, existing work has mainly focused on their use as task support for individual users in rather simple problem scenarios. Less is known about their ability to improve collaboration among multiple users in more complex problem settings. In our study, we directly compare 21 groups who either use a Smart Personal Assistant tutor or a human tutor when solving a problem task. The results indicate that groups interacting with Smart ...
Konferenzveröffentlichung
Insights into Using IT-Based Peer Feedback to Practice the Students Providing Feedback Skill
(University of Hawaii at Manoa, Hamilton Library, ScholarSpace, 2019)
The skills students need nowadays have changed over the last decades. The required skills are shifting more and more towards higher order thinking skills, such as critical thinking, collaboration and communication. One of the main ways of practicing these skills is through formative feedback, which consists of self-assessment and peer-assessment in our setting.
However, today’s lecturers are facing the challenge that the number of students per lecture is continuously increasing, while the available budget is stagnating. ...
Dissertation
Aufbereitung von Biertrebern für eine optimierte energetische und stoffliche Nutzung
(2019)
Die vorliegende Arbeit befasst sich mit der Aufgabe, ein neues Konzept zur wertschöpfenden und stofflichen Nutzung des industriellen biogenen Reststoffs Biertreber zu untersuchen.