OPUS Publikationsserver der Hochschule Rhein-Waal
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19/2025 Vierte Änderungssatzung zur Prüfungsordnung für den Bachelorstudiengang Environment and Energy der Fakultät Kommunikation und Umwelt an der Hochschule Rhein-Waal vom 08.08.2025
No full textOrigami Applications in Engineering
No full textThis thesis explores how origami-inspired modular structures—specifically uniformly thick, load-carrying designs—can be prototyped using accessible 3D printing work flows. We focus on translating geometric folding principles into real materials and hinges suitable for repeated deployment by designing printable panels and connectors, and by validating performance with a bar-and-hinge simulation approach.
Physical prototypes are fabricated and tested for packing ratio, deployment re
peatability, and stiffness-to-mass. Results indicate that thick-panel origami can
be produced with consumer 3D printers while retaining compact storage, rapid deployment, and promising structural behavior. The work outlines a practical path toward portable, reusable, and more sustainable engineering systems that minimize material use, support repair and reuse through modularity, and simplify logistics through high packing ratios
Comparative Analysis of Dry and Wet Total Mixed Ration Uptake in Calves: A Study on Feed Intake, Growth, and Health Parameters
No full textThis study investigates the effects of dry and wet Total Mixed Ration (TMR) restrictive feeding on the feed intake, growth, and health parameters of Holstein Friesian (Bostaurus) calves. Conducted on a commercial dairy farm in Bedburg-Hau, Germany, the research involved 40 calves divided into eight groups (n1, 2 = 14, n3, 4 = 6, and n5, 6, 7, 8 = 20) with dry TMR provided to odd-numbered groups and wet TMR to even-numberedgroups. The experiment monitored daily feed intake and health parameters from birth to at least six weeks of age for heifer calves from two groups and from birth to three weeks of age from further two groups, and from birth to four weeks for bull calves, alongside weekly assessments of growth progression.
T-test results did not reveal significant differences among the examined parameters when various groups were compared head-to-head. However, observable differences were noted, specifically in the amount of feed intake during the first few weeks, where calves fed dry TMR showed increased feed intake. Additionally, calves fed dry TMR exhibited less susceptibility to digestive disorders and a subsequent need for clinical treatment.
Regarding sustainability, dry TMR showed advantages in ease of handling and storage, reducing time investment and feed waste. Wet TMR showed advantages in palatability and feed intake nearing the 5-week mark of the calves’ age. However, wet TMR posed challenges, in terms of time required for its preparation. These findings provide insights into optimizing calf nutrition, promoting sustainable dairy farming practices, and addressing the challenges of different feed alternatives
04/2025 Dritte Änderungssatzung zur Prüfungsordnung für den Bachelorstudiengang International Business and Management der Fakultät Gesellschaft und Ökonomie vom 11.11.2024
No full textAnalysis of Health Literacy among Young Adults
No full textThis study investigates several key questions related to health literacy, text difficulty, and AI-generated content. Our research explores whether there is a statistical significance in the perceived difficulty of texts based on their authorship (human-translated to layman language, AI-translated, and original excerpts from a medical book), the correlation between participants' evaluations of text difficulty and quantitative analysis of these texts using JASNOPIS, and the relationship between health literacy levels and the ability to recognise AI-generated work. Additionally, the study examines the impact of exposure to AI-made writing on recognising AI-generated content and the relationship between health literacy levels and perceived text difficulty.
A cross-sectional survey was conducted with 94 participants, collecting data through online questionnaires between September 19, 2024, and October 9, 2024. Key findings include significant correlations between average perceived difficulty and several JASNOPIS variables. The study also highlights the lack of a significant relationship between exposure to AI-made writing and the ability to recognise AI-generated work. However, the findings indicate that individuals who scored higher on health literacy tests perceived the texts to be easier.
The implications of this research emphasise the importance of enhancing health-related and educational materials using plain language principles to improve accessibility and comprehension. Future studies should consider using more objective measures to avoid the influence of personal biases
Laser Modification of Thin Polymer Coatings
No full textTraditional manufacturing techniques are well-established for processing polyimides, such as Kapton®. This thesis presents a novel approach to producing polyimide and graphite using low-cost, commercially available equipment. Employing a 450 nm laser to both imidize and pyrolyze a polyamide precursor enables the flexibility of on-site manufacturing, even at a microscale, without relying on conventional fabrication techniques. The proposed method offers significant advantages, including cost and time efficiency, design flexibility, and biocompatibility, paving the way for innovative micromechanical and biomedical sensing applications. Moreover, this technique would enable the integration of fully additive manufacturing methods for Kapton® production, which currently relies primarily on subtractive manufacturing technologies. The thesis outlines the fabrication process, highlights optimal laser settings, and demonstrates the practicality of this technique by developing a water detector sensor manufactured entirely from the precursor liquid using the described method
05/2025 Zweite Änderungssatzung zur Prüfungsordnung des Bachelorstudiengangs International Taxation and Law der Fakultät Gesellschaft und Ökonomie vom 27.11.2024
No full textRadio Astronomy Essentials: Calibration Techniques with the 2.3m Radio Telescope at Rhine-Waal University
No full textThis thesis discusses calibration and, in this context, multiple ways of determining the system temperature of the 2.3-metre radio telescope at Rhine-Waal University of Applied Sciences in Kamp-Lintfort. Two methods for determining the system temperature are described here: the hot/cold-method and the derivation from the radiometer equation using measurement data from a source with a known brightness temperature, in this case, S7.
Both methods deliver different results, depending on the measurements and assumptions on which they are based. The results show that the data basis and uncertainties should always be considered when analysing the observational data to be able to evaluate the results correctly. Overall, the telescope is quite suitable for educational observations, especially of the 21-cm line of neutral hydrogen.
Furthermore, instructions have been created for the various tasks so that the results are reproducible and comprehensible. The entire process is made transparent, from planning the observations and setting up the telescope to measuring and analysing the data. In addition, basic concepts of radio astronomy are described in theory to provide valuable background knowledge. On this basis, the use of the telescope enables students and amateur astronomers to understand and apply the basic principles of radio astronomy and to plan and carry out their own observations
Sustainability and the Fast Fashion Paradox of Gen Z - A qualitative Analysis of Consumer Characteristics and Cognitive Dissonance
No full textThis study delves into the fashion preferences and decision-making processes of six Gen-Z participants, shedding light on their intricate choices. Despite a shared emphasis on visually appealing fashion and moderate sustainability knowledge, participants showed a limited inclination towards sustainable choices. Notably, price takes precedence, reflecting a prevalent budget-conscious approach. Surprisingly, participants exhibit a low preference for consistency, challenging the expectation of significant cognitive dissonance in their fashion choices. The results suggest a minimal role of cognitive dissonance, indicating a relaxed decision-making style. The study underscores the dominance of ultra-fast fashion, design, and affordability in participants' choices. Future research is encouraged to address and reduce Gen-Z's (ultra-) fast fashion consumption, promoting sustainability knowledge and a greater preference for sustainable fashion
The potential of direct marketing within the transformation process to sustainable farming in Lower Saxony, Germany
No full textFamily farms present the majority of farms worldwide, and their survival is crucial to support the growing world population. Preventing those farms from disappearing is therefore very important. These family farms face many challenges like high investments and high price volatility. Diversification in form of direct marketing can be one way to reduce these risks.
Objective was to determine the state of direct marketing usage, faced challenges in a direct marketing system, which role counselling services play in that scenario and how farmers perceive sustainability in general and in context with direct marketing. These objectives were reviewed with a quantitative study conducted by an anonymous online survey. Provided to farmers of Lower Saxony by counselling rings, network “LandTouristik Niedersachsen”, network “Kompetenzzentrum Ökolandbau Niedersachsen” and the Chamber of Agriculture.
Direct marketing usage had increased over the last years and did not depend on the way of farming. On farm direct marketing solutions like a farm shop were most popular, most likely because it can be a low-cost solution. Bureaucracy, marketing and economic viability are the major challenges in direct marketing systems and correlate with reasons why direct marketing was not used. These presented a clear work order for government, science and counselling services, and show a high potential in increasing farm sustainability. Counselling services presented to be only used if free options were exploited, which emphasized the importance of high quality counselling offers. Overall, on-farm factors stood in favor for diversification and in combination with the as important stated status of sustainability for farmers, direct marketing most likely holds potential to positively impact the transformation to sustainable farming in Lower Saxony