Master Thesis
Recent Submissions
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Lab-Scale Prototype of a Thermochemical Energy Storage System: Assembly and Experimental Investigation
(2019)Thermal Energy Storage (TES) has the potential to enable 24/7 production of clean, and infinitely abundant solar energy. Vast efforts are being made to achieve cost-competitiveness with other forms of energy. In this work, Thermochemical Energy Storage (TCS), which stores thermal energy in the form of chemical bonds, is experimentally investigated for its potential for improving the efficiency and economics of the traditional TES ...Master Thesis -
Fast and Resolution-AgnosticDenoising Diffusion for Visual Content Generation and Computer Vision
(2024)Denoising Diffusion Probabilistic Models (DDPMs) have recently emerged as a transformative technology due to their ability to generate naturally-looking images with unprecedented quality and diversity. However, limitations still prevent them from being adapted to more applications than pure image generation. These models often generate images with fixed resolution and are not directly applicable to canvases of flexible sizes. Moreover, ...Master Thesis -
Data-Drift-Based Model Retraining Triggering in Modyn
(2024)Machine learning has become increasingly data driven. In real-world scenarios, datasets are usually not stationary, causing degradation in model quality overtime. Modyn is an open source ML pipeline designed to provide system support for exploring training triggering and data selection policies on dynamic datasets. This thesis aims to extend Modyn with a data drift-based triggering component. We study design principles of automatic training ...Master Thesis -
Heatwave and Drought Adaptation to Enhance Health and Livelihood Resilience in Kenya - A Policy Review
(2024)Climate change poses substantial threats to the resilience and wellbeing of people in Kenya, especially concerning their health and livelihoods. Recognizing its vulnerability to climate change, Kenya underscores the critical importance of adaptation and resilience as primary responses to climate change. Recent developments such as the new medium term climate adaptation plans published in 2023 have reshaped climate adaptation planning in ...Master Thesis -
Evaluation of E-Bike-City road networks
(2024)Agent-based simulation in transport research is used to model behavior and interactions of persons (agents) traveling on the network. Here the reactions to capacity changes for cars in urban contexts are investigated, first by performing a sensitivity analysis with scaled capacities and second by using networks with road space reallocated from cars to bikes. In the reallocated networks, bikes and e-bikes are modeled to interact with cars ...Master Thesis -
Middlebox DDoS Defence using Hidden Paths and Path Migration: SCION DDoS Defence
(2024)Master Thesis -
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Full Waveform Inversion for Medical Ultrasound Tomography in Julia on multi-xPUs
(2023)This Master's Thesis aims to develop efficient yet user-friendly tools to perform seismic tomography using the Full Waveform Inversion (FWI) approach, as derived from the field of Earth sciences, and apply them in the realm of ultrasound medical tomography. Since its introduction in geosciences a few years ago, FWI has provided spectacular images of the Earth's subsurface at different scales, revealing, with unprecedented details, the ...Master Thesis -
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Solving the Elastic Wave Equation with Physics-Informed Neural Networks: A Robust and Critical Assessment
(2024)Physics-Informed Neural Networks (PINNs) have recently emerged as a promising approach for solving Partial Differential Equations (PDEs), offering a meshfree alternative that integrates physical principles into the learning process. This presents a new paradigm compared to traditional discretization methods and purely data-driven machine learning techniques. While promising, PINNs are not a panacea; they inherit challenges such as spectral ...Master Thesis -
Quantify the Unquantifiable: Social Framework for a Regenerative Built Environment
(2024)Certification and rating systems aim to reduce harm. However, they still fall under a degenerating system, resulting in incremental changes. This highlights the need to shift towards regenerative systems to create a positive impact. Blockchain technology can address design structures and mental models highlighted by regenerative design principles. Therefore, this study explores how blockchain technology can facilitate the transition from ...Master Thesis -
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Thermal Analysis and Optimization Potential of Clamp Kilns for Fired Clay Brick Production
(2023)Fired clay bricks are the primary building material in Malawi, traditionally produced in small-scale clamp ovens. However, the country’s construction sector faces significant challenges. Malawi experiences rapid growth and has one of the highest rates of urbanization globally, resulting in a high demand for building materials. Unfortunately, wood, the predominant fuel for clay brick production, is increasingly scarce due to the depletion ...Master Thesis -
Addressing Outcome Reporting Bias in Meta-Analysis
(2023)Outcome Reporting Bias (ORB) poses significant threats to the validity of meta-analytic findings. It occurs when researchers selectively report outcomes based on the significance or direction of results, potentially leading to distorted treatment effect estimates. Despite its critical implications, ORB remains an under-recognized issue, with few comprehensive adjustment methods available. This Thesis critically reviews the existing ...Master Thesis -