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Dissertation
Trajectory Mapping in Physical and Topical Spaces
(2023)
In this dissertation, two different types of trajectories are investigated. In the engfirst part of this work, we investigate methods for the analysis of physical trajectories. We focus on scenarios, in which signal strengths ofWiFi access points are recorded. In detail, they are recorded through smartphone devices by people moving through a building. By means of theWiFi signal strengths, (physical) trajectories of humans are reconstructed, which reflect the locations visited over time. Accurate localization based ...
Dissertation
Orometry, Intrinsic Dimensionality and Learning: Novel Insights into Network Data
(2023-11)
Today, networks are an integral part of our world. Let it be real-life friendship networks or social connections that are based on social media. In this thesis, we contribute to the understanding of networks by studying networks from three different perspectives. First, we adapt notions and concepts from orometry to metric data and networks to gain novel insights from a local perspective. Specifically, we study measures of local outstandingness and propose concepts to derive small hierarchies from larger networks. ...
Dissertation
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Regionalisierung von E-Kfz-Ladestellen in Szenarien für den zukünftigen Ausbau in Deutschland
(2023-04)
Ein wesentlicher Baustein zur Senkung der CO2-Emissionen im Verkehrssektor ist die Elektrifizierung des Individualverkehrs, wobei die schnell wachsende Lade-infrastruktur Auswirkungen auf das Stromnetz hat. Netzberechnungen erfordern die räumliche Verortung von zukünftigen Ladestellen. Die vorliegende Arbeit mo-delliert dafür Heimladestellen und öffentlich zugängliche Ladestellen holistisch und punktgenau, und ist für alle Gemeinden in Deutschland anwendbar. Zunächst wird die Anzahl an Elektrofahrzeugen und Ladestellen ...