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Code-driven Language Development: Framework for Analysis of C/C++ Open-Source Projects
(2021)Bachelor Thesis -
Online Feedback Optimization for Minimal Curtailment of Renewable Generation with Real Data
(2021)The increasing integration of distributed energy sources into low-voltage distribution networks and of photovoltaic systems in particular poses new challenges to power grid operators. Excessive distributed generation can result in overvoltages at certain distribution feeders and may consequently lead to system damages. As an alternative to physical grid reinforcement, reactive power control (Volt/VAr control) has been shown to be an ...Bachelor Thesis -
Set-Centric Subgraph Isomorphism
(2021)We investigate techniques for accelerating subgraph isomorphism (SI). SI is the task of finding occurrences of a pattern graph in a target graph and relevant to many practical applications. Our key idea is to use set algebra based formulations of SI. This facilitates employing set data structures to test the feasibility of partial mappings from the pattern graph to the target graph. The methods we use involve a range of algorithm variants ...Bachelor Thesis -
Scalable Triangle Counting and LCC with Caching
(2021)Graph analytical algorithms gained great importance in recent years as they proved to be useful in a variety of fields, such as data mining, social network analysis, or cybersecurity. To cope with the computational and memory demands that stem from the size of today's networks highly parallel solutions have to be developed. In this thesis, we present our algorithm for shared memory as well as for distributed triangle counting and local ...Bachelor Thesis -
On-board Power Generation for a Ground-Based Airborne Wind Energy System Using Brushless DC Generators
(2018)Due to the battery capacity, a ground-based Airborne Wind Energy has a limited flight time. An on-board power generation system could eliminate this problem and therefore increase the annual power production drastically. The main objective of this thesis is to investigate the feasibility of an on-board power generation system for a ground-based AWE-aircraft to recharge the batteries mid flight. A main focus hereby lies on using the existing ...Bachelor Thesis -
Accelerating BLAS with HBM on FPGAs in DaCe
(2021)In recent years FPGAs have gained interest by the high performance community because they can allow to greatly reduce the data movement compared to typical load-store architectures. However, for memory bound operations FPGAs tend to be slow due to their limited memory performance. To solve this issue the major FPGA companies started inte- grating High-Bandwidth Memory (HBM) into their devices. The DaCe Framework provides an abstraction ...Bachelor Thesis -
Turtle Graphics for WebTigerJython-3
(2023)This bachelor thesis presents the development and integration of Turtle Graphics into WebTigerJython-3, an interactive web-based educational platform aimed at introducing beginners to programming and computational thinking. Turtle Graphics is a widespread visual programming concept made popular by Seymour Papert in the 1960s. It revolutionized the way beginners learn how to write code by allowing them to create intricate drawings and ...Bachelor Thesis -
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Solving the Fisher/KPP Evolution on the Globe
(2020)The Fisher equation was originally intended to model the propagation of advantageous genes. We use this reaction-diffusion equation equipped with non-local boundary conditions to model the propagation of individuals across geographical maps. These boundary condition account for a non-local "diffusion" across channels. The results represent the dispersal of the Homo Sapiens across the globe. The discretisation is based on finite element ...Bachelor Thesis -
Kompensation des Einflusses eines Mehrfingergreifers auf einen Kraft-Momenten-Sensor
(2011)This work addresses the analysis and compensation of the force and torque effects of a multi-finger gripper on a force-torque sensor. The gripper and the sensor are attached to a free moving multiple axis industrial robot. The problem to be solved is that external force-torque influences have to be differentiated from internal influences. With respect to all static effects, the components and their constellation are analyzed and calculated ...Bachelor Thesis