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A review of flexible fluid-structure interactions in the ocean : Progress, challenges, and future directions
No full textFlexible Fluid-Structure Interaction (FFSI) has emerged as an important, but challenging research direction in modern ocean engineering. This line of research gradually evolved in response to the pressing need to model the dynamic responses of ships and marine structures to sea loads; to predict the performance of flexible marine propellers, energy converters, and coastal protection systems; and to understand the mutual interactions between sea ice, marine vegetation, and mud with oceanic and coastal processes occurring near the surface and seabed. This review presents the state of knowledge and art of modelling of FFSI in the maritime environment, tracing research progress from early physical tests to high-fidelity computational ones emerged recently. Flexible wave–structure interaction, global ship hydroelasticity, hydroelastic slamming, flexible marine propellers, vegetation dynamics, and wave–mud interactions are covered. Limitations and strengths of existing models, and the challenges that remain are discussed in-depth, and it is concluded that FFSI-based research in ocean engineering has very well grown, though some gaps are still open. In specific, hydroelastic effects are still overlooked in the design practices and classification rules do not fully incorporate them, and there are still concerns regarding uncertainties related to FFSI modelling of flexible slamming, dynamic of flexible marine vegetation, and wave-mud interactions. Hence, future research must bridge computational modelling with real-world applications, expand benchmarking coverage for marine engineering problem, and incorporate AI-based methods for modelling FFSI problems, predicting related dynamic responses, or accelerating simulations
Verstehen leicht(er) gemacht : Komplexe Zusammenhänge mit Hilfe von Erklärvideos erarbeiten
No full textLehrkräfte stehen im Sachunterricht vor der Herausforderung, komplexe Zusammenhänge zu verdeutlichen, um seitens der Lernenden Konzeptentwicklungen anzuregen. Mit Hilfe von Modellen und Animationen in Erklärvideos kann es gelingen, sachunterrichtliche Zusammenhänge und Prozesse fachgerecht darzustellen
Potentiale und Herausforderungen von E-Medien-Nutzungsanalysen in wissenschaftlichen Bibliotheken
No full textDie Analyse der Nutzung elektronischer Medien stellt einen zentralen Pfeiler eines nutzerorientierten Bibliotheksmanagements dar. Mittels Nutzungsanalysen kann die Bibliotheksleitung allgemeine Trends und Muster im Informationsverhalten der Nutzer identifizieren. Darüber hinaus liefern sie eine fundierte Entscheidungsgrundlage für operative Fragestellungen des Bibliotheksmanagements, insbesondere im Hinblick auf einen bedarfsorientierten Bestandsaufbau. Die praktische Umsetzung solcher Analysen ist jedoch mit einigen Herausforderungen verbunden, insbesondere durch die Vielzahl externer Plattformen, auf denen lizenzierte Inhalte gehostet werden. Die Beschaffung und Integration der von Anbietern bereitgestellten Statistiken erfordern eine technisch leistungsfähige Infrastruktur, um systematische Auswertungen zu ermöglichen.
Vor diesem Hintergrund adressiert die vorliegende Arbeit drei zentrale Forschungsfragen: Welches Potential bietet die Auswertung von Nutzungsstatistiken in wissenschaftlichen Bibliotheken? Welche organisatorischen und technischen Gestaltungsfaktoren beeinflussen die effektive und effiziente Nutzung dieser Statistiken? Welche Herausforderungen erschweren die Ausschöpfung des Potentials der E-Medien-Nutzungsanalyse in wissenschaftlichen Bibliotheken?
Zur Beantwortung dieser Fragen wird zunächst ein theoretisches Framework entwickelt, das die relevanten Aspekte des Themas systematisch zusammenführt. Darauf aufbauend erfolgt eine explorative empirische Untersuchung, in deren Rahmen die organisatorischen und technischen Praktiken wissenschaftlicher Bibliotheken anhand qualitativer Interviews analysiert werden. Die Ergebnisse liefern neue Einsichten in den aktuellen Entwicklungsstand, bestehende Defizite und zukünftige Gestaltungsperspektiven im Bereich der E-Medien-Nutzungsanalysen.
Diese Veröffentlichung geht zurück auf eine Masterarbeit im weiterbildenden Masterstudiengang Bibliotheks- und Informationswissenschaft im Fernstudium an der Humboldt-Universität zu Berlin aus dem Jahr 2025
Implementation of solar UV and energetic particle precipitation within the LINOZ scheme in ICON-ART
No full textWe extended the Linearized ozone scheme – LINOZ in the ICON (ICOsahedral Nonhydrostatic) – ART (the extension for Aerosols and Reactive Trace gases) model system to include NOy formed by auroral and medium-energy electrons in the upper mesosphere and lower thermosphere, and the corresponding ozone loss, as well as changes in the rate of ozone formation due to the variability of the solar radiation in the ultraviolet wavelength range. This extension allows us to realistically represent variable solar and geomagnetic forcing in the middle atmosphere using a very simple ozone scheme. The LINOZ scheme is computationally very cheap compared to a full middle atmosphere chemistry scheme, yet provides realistic ozone fields consistent with the stratospheric circulation and temperatures, and can thus be used in climate models instead of prescribed ozone climatologies. To include the reactive nitrogen (NOy) produced by auroral and radiation belt electron precipitation in the upper mesosphere and lower thermosphere during polar winter, the so-called energetic particle precipitation indirect effect, an upper boundary condition for NOy has been implemented into the simplified parameterization scheme of the N2O/NOy reactions. This parameterization, which uses the geomagnetic Ap index, is also recommended for chemistry-climate models in the CMIP6 experiments. With this extension, the model simulates realistic “tongues” of NOy propagating downward in polar witner from the model top in the upper mesosphere into the mid-stratosphere with an amplitude that is modulated by geomagnetic activity. We then expanded the simplified ozone description used in the model by applying LINOZ version 3. The additional ozone tendency from NOy is included by applying the corresponding terms of the version 3 of LINOZ. This NOy, coupled as an additional term in the linearized ozone chemistry, led to significant ozone losses in the polar upper stratosphere in both hemispheres which is qualitatively in good agreement with ozone observations and model simulations with EPP-NOy and full stratospheric chemistry. In a subsequent step, the tabulated coefficients forming the basis of the LINOZ scheme were provided separately for solar maximum and solar minimum conditions. These coefficients were then interpolated to ICON-ART using the F10.7 index as a proxy for daily solar spectra (UV) variability to account for solar UV forcing. This solar UV forcing in the model led to changes in ozone in the tropical and mid-latitude stratosphere consistent with observed solar signals in stratospheric ozone
Personality-based analysis of resilience and aggressive behaviour : A latent profile approach
No full textPersonality traits reflect patterns of thoughts, feelings and behaviour that are characteristic of people. A person who manifests an intensity of certain traits is expected to behave in a manner consistent with the behavioural repertoire accepted for those categories over time. Therefore, in our study, using latent profile analysis (in a person-centered approach), we proposed to replicate personality trait profiles in terms of tendencies toward certain aggressive behaviours and resilience abilities. The study involved 670 people aged 18-29. The study procedure consisted of filling out psychological questionnaires measuring resilience, aggressive behaviour and personality traits. We replicated three personality profiles. Those with the "resilient" profile scored low on neuroticism and relatively high on conscientiousness, agreeableness and extraversion, in contrast to those with the "overcontrolled" profile, who scored significantly higher on neuroticism and lower on the extraversion domain. The "resilient" profile was characterized by the highest levels of resilience and the lowest levels of aggression. In contrast, the "overcontrolled" profile was characterized by low levels of resilience and high levels of aggression. The "adaptive" profile was the most numerous, with average scores in all Big Five domains and average scores in resilience and aggression. Our study shows that generalizable personality profiles can be identified empirically, and that the unique constellation of traits that define an individual has important implications for a wide range of behaviours including aggressive behaviour and resilience
Identification of damage severity in Fraxinus excelsior L. trees caused by ash dieback using multisensory and multitemporal UAV imagery
No full textThe extended spread of ash dieback in Europe has far-reaching consequences for Fraxinus excelsior L. populations. The progression of the disease leads to characteristic symptoms, particularly within the tree crowns. To date, assessing the damage severity of each individual tree typically requires in-field inspections. However, UAVs equipped with RGB, thermal, and multispectral sensors offer cost-effective and objective possibilities. This study relied on such analyses and focused on two ash seed orchards in Baden-Wuerttemberg, Germany, where visual inspections were compared with multisensorial data obtained in spring, summer and autumn of 2022 and 2023. The calculated RGB and multispectral vegetation indices were able to significantly discriminate between different degrees of damage due to ash dieback; in contrast, thermal data were less reliable and linked to different dynamics. Novel thresholds applied to the vegetation indices enabled a classification of mild and severe damage with an overall accuracy of 74.9 % for the multispectral index DVI (Difference Vegetation Index) and 73.0 % for the RGB index GRVI (Green-Red Vegetation Index). Combining RGB and multispectral indices further improved the overall accuracy to 77.2 %. The presented workflow offers forest practitioners an accessible toolset for evaluating the health status of ash populations affected by ash dieback
‘Nature in the glass’ : Principles and practices in low-intervention winemaking
No full textWine is often portrayed and perceived as a natural product; however, in fact, it's predominantly a highly industrialized, processed commodity. The vast majority of vine is cultivated in monocultural systems, requiring the intensive use of pesticides and agricultural machinery. Advanced cellar technologies and oenological practices standardize vinification, controlling and manipulating microbial and biochemical processes to ensure a uniform product. This approach has faced criticism, primarily due to its ecological implications. In response, a niche market has developed around so-called ‘natural’ or ‘low-intervention’ wines, emphasizing environmentally conscious production methods, resulting in a distinctive product. In a qualitative research approach, we explore the alternative practices which reflect the winemaker's care for soil and plant health, support microorganisms in the must, and preserve the wine's ingrediencies. Through practices like no-till, soil fertilization, and spontaneous fermentation, low-intervention winemakers aspire to stop soil degradation, regenerate their plants' microbiome and respect the grape's indigenous fermentation capacity, allowing in-situ yeasts to do their job and craft an individual wine flavour. Our article proposes a framework to explore these practices and the underlying philosophy, where the observed processes and winemaker's attitudes reflect an approach of ‘co-producing with nature’, which we explore by adopting conceptual ideas from more-than-human geographies
Kirchliche Rechtschöpfung in Geschichte und Gegenwart : selektive Aneignung und systemspezifische Neubildung : eine Problemskizze
No full textAdaptation and psychometric properties of the Polish version of the Spiritual Well-Being Scale (SWBS) by Paloutzian and Ellison
No full textAccording to previous research, spiritual well-being may be an indicator of mental health, which refers to the positive experience of one’s life. The purpose of this study was to adapt and assess the validity of the Polish version of the Spiritual Well-Being Scale (SWBS) by Paloutzian and Ellison (1982). Web-based survey data were collected from 546 participants aged 18 to 72 years, 67% of whom were female. Exploratory and confirmatory data analysis revealed a two-factor questionnaire structure, which includes an existential well-being scale (EWB) and a religious well-being scale (RWB). Internal consistency (Cronbach’s alphas) for the factors was .94 for EWB, .87 for RWB, and .92 for the general scale. Significant associations with the Spirituality Scale, Gratitude/Awe Questionnaire, Patient Health Questionnaire, and World Health Organisation’s five-item Well-being Index confirmed the accuracy of the Polish version of the scale. The results strengthen the psychometric qualities of the scale, indicating its applicability in the study of religiosity and spirituality in the local context
Gender, Language, and Genre : Exploring Fluidity in Music Education Contexts
No full textThis paper starts from the premise that queer individuals might be navigating complex challenges in finding their place within the vocal constructs of music education. By questioning the necessity of framing the voice within rigid gender binaries, this study leverages post-structuralist and queer theories of gender performativity to explore how these constructs influence self-expression and identity. The paper examines the artistry of Nuri Harun Ateş, a Turkish countertenor whose eclectic vocal and stylistic choices challenge conventional constructs of genre and gender. Ateş seamlessly navigates Western classical, pop, and nostalgic Turkish music, performing in Turkish, French, Italian, English, and Kurdish. His performances, marked by feminine-coded styling and lyrics that foreground his queerness, invite audiences to question entrenched societal norms about gender and identity. Drawing on media analysis, interviews, and live performance observations, the paper aims to highlight Ateş’s role in challenging traditional binaries and to explore how his approach to fluidity can inspire and inform music education practices. By foregrounding these theoretical perspectives, this paper aims to offer new insights into integrating concepts of gender and genre fluidity within formal, non-formal, and informal music education. While the study is ongoing, this presentation will focus on theoretical implications and their potential applications, providing a foundation for future work in this area