Based on the example of wear of polymers, which exhibit a power-law time variation of the wear loss under constant loading conditions, a fractional time-derivative wear equation has been introduced. The wear contact problem with a fixed contact zone is solved using the known method of separation of spatial and time variables. It is shown that durin...
The need to support existing sewage systems is obvious due to the noticeable consequences of climate change, such as extreme rainfall, which is causing more urban flooding. It is believed that these phenomena will intensify in the long-term, and that sewage systems will be overloaded with stormwater. Consequently, cities will need more opportunitie...
Buildings are one of the main drivers of global energy consumption and CO2 emissions. Efficient home energy management systems and residential sector coupling play a key role in supporting the energy transition in this sector. At the same time, the European Commission calls for more small-scale renewable energy producers to actively participate in th...
Das interdisziplinäre Foschungsprojekt „Decoding Antisemitism“ dient der Untersuchung von Antisemitismus im Internet. Seit Sommer 2020 ist dieses dreijährige Pilotprojekt am Zentrum für Antisemitismusforschung (ZfA) an der TU Berlin angesiedelt und wird in Zusammenarbeit mit dem King’s College London (KCL) durchgeführt. Beim Untersuchungsgegenstand...
The atomic layer deposition of gallium and indium oxide was investigated on mesoporous silica powder and compared to the related aluminum oxide process. The respective oxide (GaOx, InOx) was deposited using sequential dosing of trimethylgallium or trimethylindium and water at 150 °C. In-situ thermogravimetry provided direct insight into the growth ...
In many everyday situations, we experience the influence of the human voice directivity. We perceive loudness and timbre differently when a speaker faces us or turns away from us. Often, we use voice directivity intuitively, for example when facing a person in a meeting or a casual conversation. Such effects of human voice directivity have long been a...
Spatial hearing is an essential auditory function. It allows us to localize, segregate, and group sound sources in space. Accurate sound source localization is a fundamental ability for understanding and following speech in everyday situations, as it contributes to our capacity to discern between target signal streams and other simultaneous sound s...
CdS nanoparticles were successfully synthesized using cadmium acetate and sodium sulfide as Cd and S precursors, respectively. The effect of using sodium thiosulfate as an additional sulfur precursor was also investigated (combined milling). The samples were characterized by XRD, Raman spectroscopy, XPS, UV-Vis spectroscopy, PL spectroscopy, DLS, a...
This thesis concerns the combination of dependable error control and data based approximation to derive non-intrusive and reliable algorithms for uncertainty quantification in forward and inverse problems. In particular Bayesian inverse problems subject to high-dimensional parametric forward models driven by partial differential equations are the m...
Deflector wheel classifiers are widespread in industry for the separation of powders into fine and coarse powders. Even though this separation process has been known for quite some time, it is not yet fully understood, and existing models fail to precisely predict the separation characteristics. Due to the high throughput of deflector wheel classif...
