@masterthesis{Breitbach2022,
  type      = {Bachelor Thesis},
  author    = {Breitbach, Evgeniya},
  title     = {goodays Garderobe : eine Saison \& Wetter orientierte Station},
  publisher = {FH Aachen},
  address   = {Aachen},
  pages     = {61 Seiten},
  year      = {2022},
  abstract  = {Garderobe- ist ein M{\"o}belst{\"u}ck, dessen Nutzungsbedingungen alleine von den Jahreszeiten und dem Wetter bestimmt werden. Mit dem Wechsel der Saison ver{\"a}ndert sich auch unsere Garderobe. Garderobe ist auch erstes Erscheinungsbild eines Zuhauses, welches vieles {\"u}ber deren Bewohner verr{\"a}t. Goodays ist eine erweiterungsf{\"a}hige und nach dem Wetter/Zweck ver{\"a}nderbare Station. Es gibt Feuchtigkeit und Schmutz orientierte Fl{\"a}chen und l{\"u}ftungsf{\"a}hige R{\"a}ume, um Ger{\"u}che zu vermeiden. Die Dimensionen sind flexibel, was nicht viel Platz und Lichtfang wegnimmt. Die Tiefe des M{\"o}belst{\"u}ckes entspricht den notwendigen Kleidern und Schuhmaßen. Verschiede Bestandteile der Kollektion unterst{\"u}tzen bei der Forderung zur Ruhe und verringern den visuellen L{\"a}rm. Geschlossene Staur{\"a}ume sorgen f{\"u}r mehr Ordnung und Neutralit{\"a}t. Die Station bietet Komfort in der Form von Sitzfl{\"a}che und ausreichender Ablagefl{\"a}che.},
  language  = {de}
}
@masterthesis{Eberhardt2022,
  type      = {Bachelor Thesis},
  author    = {Eberhardt, Dag Norman},
  title     = {"I Was Here!"},
  publisher = {FH Aachen},
  address   = {Aachen},
  pages     = {77 Seiten},
  year      = {2022},
  abstract  = {Die Menschheit erlebt aktuell Zeiten drastischen Wandels. Deswegen k{\"o}nnte es wohltun, einen Blick in die Vergangenheit zu werfen und sich darauf zu besinnen, wo die Menschen herkommen, wer sie waren und was seitdem bereits erreicht wurde. In dieser Grafiknovelle wird ein kleiner Steinzeitjunge namens Muami begleitet, der vor 35.000 Jahren die Verg{\"a}nglichkeit des Lebens kennenlernt. Im Verlauf des folgenden Jahres erfindet er die Selbstverewigung in der H{\"o}hlenmalerei. Mit seiner Figur soll aufgezeigt werden, dass die fr{\"u}hen Europ{\"a}er eben keine primitiven Halbaffen, sondern intelligente und außerdem zutiefst kreative Menschen waren. Trotz ihrer rauen Umwelt waren ihre Sorgen und Freuden den unseren gar nicht so un{\"a}hnlich. „I Was Here!" ist ein Versuch, ein authentisches Portr{\"a}t jener Menschen zu schaffen und dabei ihrer Welt, ihrem Leben und ihrer Kunst gerecht zu werden.},
  language  = {de}
}
@masterthesis{Vornewald2022,
  type      = {Bachelor Thesis},
  author    = {Vornewald, Klara Franziska},
  title     = {Graphic Novel : Konzeptionierung und Umsetzung einer Graphic Novel f{\"u}r Kinder},
  publisher = {FH Aachen},
  address   = {Aachen},
  pages     = {147 Seiten},
  year      = {2022},
  abstract  = {Die Graphic Novel „Traumspiel" erz{\"a}hlt eine kindgerechte Fantasiegeschichte zum Thema Traum. Ansatz des Projektes war die Frage, wie wohl eine Welt auss{\"a}he, in der Tr{\"a}ume eine greifbare Entit{\"a}t darstellen. Ziel war es, diese Welt und eine dort spielende Geschichte zu erschaffen und beides visuell in einer Graphic Novel zum Leben zu erwecken. In „Traumspiel" werden Menschen unwissentlich nachts in ein Traumland entf{\"u}hrt, wo ihnen die Tr{\"a}ume als Marionettentheater vorgespielt werden. Erz{\"a}hlt wird die Geschichte eines Kindes, das auf diese Weise je einen Traum und Albtraum erlebt. Die Illustrationen sind mit Tusche gemalt. Durch die Beschr{\"a}nkung auf drei Farben werden verschiedene Aspekte der Geschichte visuell unterschieden. Entstanden ist eine Graphic Novel, in der alle konzeptionellen und gestalterischen Entscheidungen aufeinander aufbauen, um eine spannende Geschichte zu erz{\"a}hlen.},
  language  = {de}
}
@phdthesis{Biewendt2022,
  author    = {Biewendt, Marcel},
  title     = {Socio-Economic challenges in sustainability and resource management},
  publisher = {Hungarian University of Agriculture and Life Sciences},
  pages     = {160 Seiten},
  year      = {2022},
  abstract  = {This dissertation uses in first stage a macroeconomic investigation to examine the dependence, influence and corruption of socio-economic development through effects of sustainability and resource management. The conducted research found that the state's dependence on its citizens decreases when the state's sources of revenue are largely detached and independent of the citizens' financial resources. In this case, financial resources are taxes and duties provided by the citizens. One possible consequence is the restriction of state investment in its citizens. Both the qualitative literature review and the quantitative data analysis revealed a negative correlation between socio-economic development and the resource economy's share of GDP for the period under study. The microeconomic investigation was primarily conducted through an intensive literature review. It was shown that the rebound effect as such is already very well researched. However, it also became clear that avoidance strategies for the rebound effect and links to sustainability initiatives are scarce or non-existent. The need for a redesign of the impact analysis with regard to technological innovations and their influence on resource consumption and resource management has become clear on the basis of the present study. Further, emerging and developing countries in particular, which will be confronted in the foreseeable future not only with the fundamental problems of resource abundance in the overall economic context, but also with the issues of their sustainable use, should be confronted with these problems as early as possible in order to find solutions in a timely manner.},
  language  = {de}
}
@masterthesis{Buhr2022,
  type      = {Bachelor Thesis},
  author    = {Buhr, Amelie},
  title     = {Entschleunigen : warum unser Modekonsum verlangsamt werden muss},
  publisher = {FH Aachen},
  address   = {Aachen},
  pages     = {141 Seiten},
  year      = {2022},
  abstract  = {In Zeiten von Schnelllebigkeit {\"a}ndern immer mehr Menschen bewusst ihren Umgang mit allt{\"a}glichen Dingen. Was dabei h{\"a}ufig in den Hintergrund r{\"u}ckt, ist das Thema "bewusste Kleidung". Beeinflusst durch sogenannte Fast-Fashion-Modeketten und Social Media leben wir in einer regelrechten Wegwerfgesellschaft. „Entschleunigen" besch{\"a}ftigt sich mit den Schattenseiten der Modeindustrie, zeigt aber ebenso (neue) Wege auf, die auf eine bessere Zukunft f{\"u}r uns und unsere Umwelt hoffen lassen. Aufgeteilt in zwei Kapitel gibt „Entschleunigen" einen Einblick in den {\"o}kologischen und sozialen Fußabdruck der Modeindustrie und stellt zum anderen die Gegenseite vor, bei der Wert auf faire Produktion und Nachhaltigkeit gelegt wird. Das Buch „Entschleunigen" soll {\"u}ber die Missst{\"a}nde in der Textilbranche informieren, jedoch im Umkehrschluss dazu motivieren, diese mit einfachen Mitteln zu verbessern.},
  language  = {de}
}
@misc{OPUS4-11128,
  title     = {Dimensionen Nr. 30 / 2023: Magazin der FH Aachen University of Applied Sciences - Der Mensch im Mittelpunkt},
  address   = {Aachen},
  organization    = {Fachhochschule Aachen},
  pages     = {62 Seiten},
  year      = {2023},
  abstract  = {06| Warum es gemeinsam besser geht 10| Interview 14| Wer ist hier der Boss? 18| Schnittstelle zwischen Mensch und Technik 22| Zweite Heimat J{\"u}lich 28| Zwischen Angst und Hoffnung 32| Eine Sternstunde f{\"u}r die FH Aachen 36| Gegen alle Widerst{\"a}nde 38| Ein Ort, der bleibt 42| Der Aufbl{\"u}hende 46| Der Computer sitzt am Steuer 52| Da geht das Herz auf 54| Hoch hinaus 58| Beratungsangebote 60| Das alte Sch{\"a}tzchen},
  language  = {de}
}
@phdthesis{Bung2023,
  author    = {Bung, Daniel Bernhard},
  title     = {Imaging techniques for investigation of free-surface flows in hydraulic laboratories},
  doi       = {10.25926/BUW/0-172},
  pages     = {XXIII, 218 Seiten},
  year      = {2023},
  abstract  = {This thesis aims at the presentation and discussion of well-accepted and new imaging techniques applied to different types of flow in common hydraulic engineering environments. All studies are conducted in laboratory conditions and focus on flow depth and velocity measurements. Investigated flows cover a wide range of complexity, e.g. propagation of waves, dam-break flows, slightly and fully aerated spillway flows as well as highly turbulent hydraulic jumps. Newimagingmethods are compared to different types of sensorswhich are frequently employed in contemporary laboratory studies. This classical instrumentation as well as the general concept of hydraulic modeling is introduced to give an overview on experimental methods. Flow depths are commonly measured by means of ultrasonic sensors, also known as acoustic displacement sensors. These sensors may provide accurate data with high sample rates in case of simple flow conditions, e.g. low-turbulent clear water flows. However, with increasing turbulence, higher uncertainty must be considered. Moreover, ultrasonic sensors can provide point data only, while the relatively large acoustic beam footprint may lead to another source of uncertainty in case of relatively short, highly turbulent surface fluctuations (ripples) or free-surface air-water flows. Analysis of turbulent length and time scales of surface fluctuations from point measurements is also difficult. Imaging techniques with different dimensionality, however, may close this gap. It is shown in this thesis that edge detection methods (known from computer vision) may be used for two-dimensional free-surface extraction (i.e. from images taken through transparant sidewalls in laboratory flumes). Another opportunity in hydraulic laboratory studies comes with the application of stereo vision. Low-cost RGB-D sensors can be used to gather instantaneous, three-dimensional free-surface elevations, even in flows with very high complexity (e.g. aerated hydraulic jumps). It will be shown that the uncertainty of these methods is of similar order as for classical instruments. Particle Image Velocimetry (PIV) is a well-accepted and widespread imaging technique for velocity determination in laboratory conditions. In combination with high-speed cameras, PIV can give time-resolved velocity fields in 2D/3D or even as volumetric flow fields. PIV is based on a cross-correlation technique applied to small subimages of seeded flows. The minimum size of these subimages defines the maximum spatial resolution of resulting velocity fields. A derivative of PIV for aerated flows is also available, i.e. the so-called Bubble Image Velocimetry (BIV). This thesis emphasizes the capacities and limitations of both methods, using relatively simple setups with halogen and LED illuminations. It will be demonstrated that PIV/BIV images may also be processed by means of Optical Flow (OF) techniques. OF is another method originating from the computer vision discipline, based on the assumption of image brightness conservation within a sequence of images. The Horn-Schunck approach, which has been first employed to hydraulic engineering problems in the studies presented herein, yields dense velocity fields, i.e. pixelwise velocity data. As discussed hereinafter, the accuracy of OF competes well with PIV for clear-water flows and even improves results (compared to BIV) for aerated flow conditions. In order to independently benchmark the OF approach, synthetic images with defined turbulence intensitiy are used. Computer vision offers new opportunities that may help to improve the understanding of fluid mechanics and fluid-structure interactions in laboratory investigations. In prototype environments, it can be employed for obstacle detection (e.g. identification of potential fish migration corridors) and recognition (e.g. fish species for monitoring in a fishway) or surface reconstruction (e.g. inspection of hydraulic structures). It can thus be expected that applications to hydraulic engineering problems will develop rapidly in near future. Current methods have not been developed for fluids in motion. Systematic future developments are needed to improve the results in such difficult conditions.},
  language  = {en}
}
@article{BergmannMoehrenBraunetal.2023,
  author    = {Bergmann, Ole and M{\"o}hren, Felix and Braun, Carsten and Janser, Frank},
  title     = {On the influence of elasticity on swept propeller noise},
  series = {AIAA SCITECH 2023 Forum},
  journal   = {AIAA SCITECH 2023 Forum},
  publisher = {AIAA},
  address   = {Reston, Va.},
  doi       = {10.2514/6.2023-0210},
  year      = {2023},
  abstract  = {High aerodynamic efficiency requires propellers with high aspect ratios, while propeller sweep potentially reduces noise. Propeller sweep and high aspect ratios increase elasticity and coupling of structural mechanics and aerodynamics, affecting the propeller performance and noise. Therefore, this paper analyzes the influence of elasticity on forward-swept, backward-swept, and unswept propellers in hover conditions. A reduced-order blade element momentum approach is coupled with a one-dimensional Timoshenko beam theory and Farassat's formulation 1A. The results of the aeroelastic simulation are used as input for the aeroacoustic calculation. The analysis shows that elasticity influences noise radiation because thickness and loading noise respond differently to deformations. In the case of the backward-swept propeller, the location of the maximum sound pressure level shifts forward by 0.5 °, while in the case of the forward-swept propeller, it shifts backward by 0.5 °. Therefore, aeroacoustic optimization requires the consideration of propeller deformation.},
  language  = {en}
}
@article{ThomaThomessenGardietal.2023,
  author    = {Thoma, Andreas and Thomessen, Karolin and Gardi, Alessandro and Fisher, A. and Braun, Carsten},
  title     = {Prioritising paths: An improved cost function for local path planning for UAV in medical applications},
  series = {The Aeronautical Journal},
  journal   = {The Aeronautical Journal},
  number    = {First View},
  publisher = {Cambridge University Press},
  address   = {Cambridge},
  issn      = {0001-9240 (Print)},
  doi       = {10.1017/aer.2023.68},
  pages     = {1 -- 18},
  year      = {2023},
  abstract  = {Even the shortest flight through unknown, cluttered environments requires reliable local path planning algorithms to avoid unforeseen obstacles. The algorithm must evaluate alternative flight paths and identify the best path if an obstacle blocks its way. Commonly, weighted sums are used here. This work shows that weighted Chebyshev distances and factorial achievement scalarising functions are suitable alternatives to weighted sums if combined with the 3DVFH* local path planning algorithm. Both methods considerably reduce the failure probability of simulated flights in various environments. The standard 3DVFH* uses a weighted sum and has a failure probability of 50\% in the test environments. A factorial achievement scalarising function, which minimises the worst combination of two out of four objective functions, reaches a failure probability of 26\%; A weighted Chebyshev distance, which optimises the worst objective, has a failure probability of 30\%. These results show promise for further enhancements and to support broader applicability.},
  language  = {en}
}
@article{RuebbelkeVoegeleGrajewskietal.2023,
  author    = {R{\"u}bbelke, Dirk and V{\"o}gele, Stefan and Grajewski, Matthias and Zobel, Luzy},
  title     = {Cross border adjustment mechanism: Initial data for the assessment of hydrogen-based steel production},
  series = {Data in Brief},
  volume    = {47},
  journal   = {Data in Brief},
  number    = {Article 108907},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {2352-3409},
  doi       = {10.1016/j.dib.2023.108907},
  pages     = {1 -- 5},
  year      = {2023},
  abstract  = {Ambitious climate targets affect the competitiveness of industries in the international market. To prevent such industries from moving to other countries in the wake of increased climate protection efforts, cost adjustments may become necessary. Their design requires knowledge of country-specific production costs. Here, we present country-specific cost figures for different production routes of steel, paying particular attention to transportation costs. The data can be used in floor price models aiming to assess the competitiveness of different steel production routes in different countries (R{\"u}bbelke, 2022).},
  language  = {en}
}