Oscillation Flow of Viscous Electron Fluids in Conductors of Rectangular Cross-Section

The article presents results of an analytical and numerical modeling of electron fluid motion and heat generation in a rectangular conductor at an alternating electric potential. The analytical solution is based on the series expansion solution (Fourier method) and double series solution (method of eigenfunction decomposition). The numerical solution is based on the lattice Boltzmann method (LBM). An analytical solution for the electric current was obtained. This enables estimating the heat generation in the conductor and determining the influence of the parameters characterizing the conductor dimensions, the parameter M (phenomenological transport time describing momentum-nonconserving collisions), the Knudsen number (mean free path for momentum-nonconserving) and the Sh number (frequency) on the heat generation rate as an electron flow passes through a conductor

Wind Energy in Forests: An Analysis of Potentials and Impacts

Onshore wind energy, the highest share of electricity production and the cheapest form of electricity in Germany has become an essential part of Germany’s aim to reach greenhouse gas neutrality in 2045. Still, its development faces social rejection due to perceived health problems that are as a result of wind turbines construction in close proximity to settlements. Forest, the second largest land use in Germany provides consistent wind resources for further expansion of wind energy generation but the social perception about wind energy in the forest is not great as forest is identified as the second largest natural carbon sink and provides some ecological benefits to humans and animals. This thesis sought to provide a quantitative comparison of the climate impact of wind turbines and forests. Forest carbon stock of German forests was extracted from the German National Forest Inventory (NFI) database on the seven tree species and 2 species classification. The data available were the tree size and tree age. A multiple linear regression was used to estimate the influence of tree age and tree size on the carbon stock on a tree species. The model was performed using R language. The emission saving of Vestas V162-6.0 wind turbine was estimated and the results were compared to those of the results of the multiple linear regression. It was determined that the emissions payback period of the wind turbine was seven (7) months, and the emissions avoided per year by the wind turbine was equivalent to the carbon stock of about 28 hectares of a matured forest. The research showed that both forest and wind energy are gains to climate change but in different ways and to be able to meet the climate goals, there should be a harmonious use of both resources

Towards Precision in Bifacial Photovoltaic System Simulation: A Model Selection Approach with Validation

As global reliance on sustainable energy solutions intensifies, there is a growing need to optimise and accurately predict renewable energy outputs. Bifacial photovoltaic systems, which are capable of capturing irradiance on both their front and rear sides, represent a significant advancement over traditional monofacial systems, yielding higher energy per area. The accuracy of simulation models for these systems has a direct impact on their financial viability, necessitating the use of comprehensive and reliable simulation frameworks. This research validates BifacialSimu, an open-source simulation tool designed to enhance the prediction of bifacial PV system energy outputs by incorporating multiple simulation models. The practical validation of BifacialSimu is based on empirical data from three diverse geographic locations. The locations of Golden, United States; Heggelbach, Germany; and Florianópolis, Brazil, provide insights into the performance of bifacial PV systems across a range of environmental conditions and installation configurations. These findings underscore the practical applicability of BifacialSimu, with recommendations for simulation model selection and methodological advancements, paving the way for more precise and efficient bifacial PV system simulations across diverse scenarios. This study employs a number of validation metrics, including relative error, coefficient of determination and Normalized Root Mean Square Error, to assess the accuracy of the simulations. The findings indicate that the Ray tracing method is the most accurate of the irradiance simulation modes for most scenarios. The validation results highlight that the Ray Tracing method achieves superior accuracy in irradiance simulations, particularly under varied environmental conditions, while Variable Albedo models further enhance predictive precision by accounting for dynamic factors such as snow cover

Open-Access-Challenge

Ein Spiel, um sich in den Inhalten zum Modul "Open Access, digitales Publizieren & Lizenzmanagement" zu testen. Setzt euch zusammen, um in einem Brettspiel ähnlich zu "Rutschen und Leitern" knifflige Fragen zu beantworten. Mit Spielfiguren und Würfel könnt ihr unsere Spielmaterialien entdecken, mehr dazu findet ihr in der Spielanleitung. Wir wünschen euch viel Spaß ;

Analysis of gender roles and implications for natural resource management in rural communities of Durango, Mexico

This research analyzes the gender dynamics that have influenced natural resource management in the rural communities of La Ferrería and El Nayar, Durango, Mexico, over the past 50 years. Using a theoretical framework based on gender perspective, intersectionality, and rural systems theory, the study examines how social change, globalization, and the new rurality have transformed gender roles and access to natural resources. Through qualitative methods such as participant observation, semi-structured interviews, life histories, and documentary research, this study identifies the progressive loss of traditional knowledge and the increasing urbanization of rural life. The results reveal that although women have gained greater participation in decision-making processes, structural barriers continue to limit their access to land and resource management. In addition, changing generational perspectives, particularly among participants aged 18 to 24, indicate a growing disengagement from traditional agricultural practices in favor of technical and academic approaches. This study highlights the urgent need to integrate gender perspectives into rural development policies, promoting sustainable and equitable resource management while preserving ancestral knowledge. The research underscores the importance of revaluing rural work to ensure long-term food security and maintain cultural ties to the land. Key words: Gender perspective, natural resource management, new rurality, traditional knowledge, rural development.Esta investigación analiza las dinámicas de género que han influido en el manejo de los recursos naturales en las comunidades rurales de La Ferrería y El Nayar, Durango, México, durante los últimos 50 años. Utilizando un marco teórico basado en la perspectiva de género, la interseccionalidad y la teoría de sistemas rurales, el estudio examina cómo los cambios sociales, la globalización y la nueva ruralidad han transformado los roles de género y el acceso a los recursos naturales. A través de métodos cualitativos, como la observación participante, las entrevistas semi estructuradas, historias de vida y la investigación documental, este estudio identifica la pérdida progresiva de conocimientos tradicionales y la creciente urbanización de la vida rural. Los resultados revelan que, aunque las mujeres han conseguido una mayor participación en los procesos de toma de decisiones, las barreras estructurales siguen limitando su acceso a la gestión de la tierra y los recursos. Además, el cambio en las perspectivas generacionales, sobre todo entre las personas de 18 a 24 años, indica una creciente desconexión de las prácticas agrícolas tradicionales en favor de enfoques técnicos y académicos. Este estudio pone de relieve la urgente necesidad de integrar las perspectivas de género en las políticas de desarrollo rural, promoviendo una gestión sostenible y equitativa de los recursos y preservando al mismo tiempo los conocimientos ancestrales. La investigación subraya la importancia de revalorizar el trabajo rural para garantizar la seguridad alimentaria a largo plazo y mantener los vínculos culturales con la tierra. Palabras clave: Perspectiva de género, gestión de recursos naturales, nueva ruralidad, conocimientos tradicionales, desarrollo rural

Virtual Virtuoso: A Systematic Literature Review of Immersive Learning Environments for Psychomotor Skill Development

Psychomotor skill training has traditionally relied on the physical presence of both teacher and learner for effective demonstrations and feedback, posing challenges for remote and self-directed learning. Technological advancements have given rise to immersive learning environments (ILEs), offering novel solutions for interactive and multimodal training. Despite the widespread use of technologies, comprehensive insights into the potential and specific advantages of ILEs within the psychomotor domain remain understudied. This systematic literature review investigates current research on ILEs tailored for psychomotor skill development, focusing on four key dimensions: motor skill classification, technological integration, feedback mechanisms, and design characteristics of virtual environments. By conducting frequency and correlation analyses, the review identifies positive correlations that suggest potential synergies between various aspects of ILE-based psychomotor training and highlights research gaps through negative correlations. The findings offer a comprehensive understanding of the state-of-the-art ILEs for psychomotor training and provide a foundation for future research in this evolving field

Agent-Based Analysis of Financial Crisis Management Strategies to Enhance the Energy Transition in Germany

Crises appear to be occurring with increased frequency, whether provoked directly by human actions or through indirect causes such as resource scarcity or natural disasters. Crisis management strategies are frequently implemented with the aim of mitigating the immediate impacts of these crises. Nevertheless, it is critical to also consider the long-term consequences of such strategies. This study investigates both the short- and long-term effects of various crisis management strategies during a financial crisis in relation to the energy transition. An agent-based model of the German electricity sector is developed to analyze the effects of different strategies. The findings suggest that a reduction in electricity demand by 10% achieves the most favorable outcomes, decreasing short-term electricity costs by 11% and long-term carbon dioxide emissions by 9%

Konsens - (k)eine Lösung für sexualisierte Gewalt?

Konsens verbreitet sich in den letzten Jahren nicht nur in feministischen, sondern auch in gesamtge-sellschaftlichen Diskursen. Prävalent sind dabei Konsenskonzepte mit den Slogans „Ja heißt Ja“ und „Nein heißt Nein“. Gerade im Zusammenhang mit sexualisierter Gewalt wird Konsens immer wieder zugeschrieben, sowohl sexuelle Gewalt verhindern als auch die Qualität sexueller Interaktionen ver-bessern zu können. Doch kann Konsens diese Erwartungen erfüllen? Diese Arbeit analysiert die Potenziale und Limitierungen für die Prävention von sexualisierter Gewalt. Dabei wird eine machttheoretische und intersektionale Perspektive angewandt. Konsens wird im Kontext von verbreiteten Vergewaltigungsmythen, Täter*innennarrativen und verwobenen Macht-strukturen betrachtet und nach den Ebenen Motivation, Wille und Kommunikation differenziert ana-lysiert. Es wird herausgearbeitet, inwiefern aktuelle Konsenskonzepte zur Stabilisierung von Macht-strukturen beitragen können, anstelle sie zu dekonstruieren. Die Analyse gelangt zu dem Ergebnis, dass Konsens weder unmittelbar sexualisierte Gewalt zwischen zwei Menschen verhindern kann, noch ein Ideal für sexuelle Interaktionen darstellt. Langfristig kann Konsens dennoch zu einem Kulturwandel beitragen und dabei unterstützen, Rape Culture, welche sexualisierte Gewalt ermöglicht und fördert, abzubauen. Die Thesis mündet in der Vorstellung eines neu entwickelten Konsensmodells. Dieses ermöglicht es, sexuelle Handlungen differenziert theoretisch zu analysieren. Es kann zudem genutzt werden, um Präventionsprojekte zu reflektieren und (weiter) zu entwickeln

Der Einfluss von Religiosität auf das persönliche Erleben von Menschen mit Sehschädigung – Eine qualitative Untersuchung mit Betroffenen

Diese Bachelorarbeit beschäftigt sich mit dem Einfluss von Religiosität auf das persönliche Erleben von Menschen mit Sehschädigung. Im Fokus stehen sowohl blinde als auch sehbehinderte Personen. Die Arbeit basiert auf einer empirischen Untersuchung im Rahmen der qualitativen Sozialforschung. Mithilfe leitfadengestützter Interviews wurden Erfahrungen, Perspektiven und individuelle Bedeutungszuschreibungen von Betroffenen erhoben und ausgewertet. Die Analyse bewegt sich an der Schnittstelle von Disability Studies und Religionswissenschaften – ein Themenfeld, das laut aktuellem Forschungsstand bislang wenig untersucht wurde. Ziel der Arbeit war es, aufzuzeigen, welche Rolle Religiosität bei der Lebensbewältigung spielt, welche Ressourcen sie bieten kann und welche Herausforderungen damit verbunden sind. Die Ergebnisse zeigen, dass Religiosität für viele Betroffene eine wichtige Quelle für Selbstwert, Akzeptanz und innere Zufriedenheit darstellt. Gleichzeitig wurden Barrieren innerhalb religiöser Institutionen thematisiert. Die Arbeit leistet einen Beitrag zur fachlichen Diskussion in der Sozialen Arbeit und betont die Bedeutung von Religiosität als Ressource im professionellen Handeln

Providing the Transport Sector in Europe with Fossil Free Energy - A Model-Based Analysis under Consideration of the MENA Region

For reaching the European greenhouse gas emission targets, the phase-in of alternative technologies and energy carriers is crucial for all sectors. For the transport sector, synthetic fuels are–next to electromobility–a promising option, especially for long-distance shipping and air transport. Within this context, the import of synthetic fuels from the Middle East and Northern Africa (MENA) region seems attractive due to low costs for renewable electricity in this region and low transport costs of synthetic fuels at the same time. Against this background, this paper analyzes the role of the MENA region in meeting the future synthetic fuel demand in Europe using a cost-optimizing energy supply model. In this model, the production, storage and transport of electricity, hydrogen and synthetic fuels by various technologies in both European and MENA countries in the period up to 2050 are explicitly modeled. Thereby, different scenarios are analyzed to depict regional differences in investment risks: a base scenario that does not take into account regional differences in investments risks and three risk scenarios with different developments of regional investment risks. Sensitivity analyses are also carried out to derive conclusions about the robustness of results. Results show that meeting the future synthetic fuel demand in Europe to a large extent by imports from the MENA region can be an attractive option from an economic point of view. If investment risks are incorporated, however, lower import quotas of synthetic fuels are economically attractive for Europe: the higher generation costs are outweighed by the lower investments risks in Europe to a certain extent. Thereby, investment risks outweigh other factors such as transport distance or renewable electricity generation costs in terms of exporting MENA regions and a synthetic fuel import is especially attractive from MENA countries with low investment risks. Concluding, within this paper, detailed export relations between MENA and EU considering investment risks were modeled for the first time. These model results should be complemented by a more in-depth analysis of the MENA countries, including evaluating opportunities for local value chain development, sustainability concerns (including social factors), and optimal site selection