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Frequency-Resolved High-Frequency Broadband Measurement of Acoustic Longitudinal Waves by Laser-Based Excitation and Detection

Brand, Felix; Drese, Klaus Stefan (2024)

Sensors 24 (5), 1630.
DOI: 10.3390/s24051630


Open Access Peer Reviewed
 

Optoacoustics is a metrology widely used for material characterisation. In this study, a measurement setup for the selective determination of the frequency-resolved phase velocities and attenuations of longitudinal waves over a wide frequency range (3-55 MHz) is presented. The ultrasonic waves in this setup were excited by a pulsed laser within an absorption layer in the thermoelastic regime and directed through a layer of water onto a sample. The acoustic waves were detected using a self-built adaptive interferometer with a photorefractive crystal. The instrument transmits compression waves only, is low-contact, non-destructive, and has a sample-independent excitation. The limitations of the approach were studied both by simulation and experiments to determine how the frequency range and precision can be improved. It was shown that measurements are possible for all investigated materials (silicon, silicone, aluminium, and water) and that the relative error for the phase velocity is less than 0.2%.

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Seminar "ChatGPT an der Hochschule"

Holtorf, Christian; Rottmann, Pauline; Hesel, Charlotte (2024)

Beitrag zur vhb-Ideenwerkstatt „KI-Hochschullehre in der Praxis“. Online unter: https://oer.vhb.org/edu-sharing/components/render/22ea73c6-772b-4a11-80ca-bffbe093d2d7.


Open Access Peer Reviewed

Tree species-specific wood traits control diazotrophic community composition in deadwood

Hossen, Shakhawat; Groß , C.; Stapf, D.; Borken , W.; Noll, Matthias (2024)

International Biodeterioration & Biodegradation 187, 105723 .
DOI: 10.1016/j.ibiod.2023.105723


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Ziviler Ungehorsam – wo ist Dein Standort? Ein Kurztrip zwischen Mottenkiste, Moral und Verfassungsrecht. In: praefaktisch.de – Ein Philosophieblog, 27. Februar 2024. https://www.praefaktisch.de/002e/ziviler-ungehorsam-wo-ist-deinstandort-ein-kurztrip-zwischen-mottenkiste-moral-und-verfassungsrecht/. (Abrufdatum: 27.2.2024).

Buchholz-Schuster, Eckardt (2024)


Open Access

Verbesserung der Testqualität mit dem Testing Quality Audit

Reißing, Ralf; Houdek, Frank; Gomringer, Christoph (2024)

In: Dhungana, D.; Lambers, L.; Bonorden, L.; Henning, S. (Hrsg.): Software Engineering 2024 - Companion Proceedings, 21. Workshop Automotive Software Engineering, Linz, Februar 2024, 19-30.
DOI: 10.18420/sw2024-ws_02


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Positiv trotz Krisen? Wie Sie Zufriedenheit trainieren können

Kohls, Niko (2024)

Focus Online - https://www.focus.de/gesundheit/mental-gesund/wie-sie-zufriedenheit-finden-obwohl-sich-die-krisen-in-ihrem-leben-stapeln_id_259686380.html.



Energieeffizienz industrieller Liegenschaften

Schaub, Michael (2024)

Innovation durch Dialog - "Energie intelligent im Unternehmen managen".


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Handlungsfeld Kulturelle Teilhabe – Gelingensbedingungen und gelebte Praxis im kritischen Blick

Gross, Hellen (2024)

Vortrag auf dem virtuellen Netzwerktreffen des Goethe Instituts.


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Mirror-image phage display for the selection of D-amino acid peptide ligands as potential therapeutics

Funke, Susanne A.; Malhis, Marwa (2024)

Current Protocolls 2024 (4), e957.


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Autoshuttle: A Novel Dataset for Advancing Autonomous Driving in Shuttle-Specific Environments

Zhou, Lixian; Salaar, Hamza; Schmidt, Michael; Dehghani, Ali; Arbeiter, Georg (2024)

2024 IEEE 22nd World Symposium on Applied Machine Intelligence and Informatics (SAMI) 2024, 383-390.
DOI: 10.1109/SAMI60510.2024.10432901


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Verbesserte Clear-Sky-Erkennung durch hybrides Maschinelles Lernen

Schönau, Maximilian; Daume, Darwin; Panhuysen, Markus; Schulze, Achim...

7. Regenerative Energietechnik Konferenz in Nordhausen (RET.Con) 7. RET.Con, 2024 (7), 145-152.


Peer Reviewed
 

Die präzise Erkennung von Clear-Sky-Momenten ist für die Überwachung und Effizienzana-lyse von Photovoltaikanlagen von zentraler Bedeutung, da zu diesen Zeitpunkten definierte und model-lierbare Einstrahlungsverhältnisse herrschen. Es wird ein hybrides Modell zur verbesserten Erkennung von Clear-Sky-Momenten auf Basis von Einstrahlungsdaten vorgestellt. Hierfür wurden zunächst ma-nuell, dann mithilfe eines CNNs Merkmale aus den Einstrahlungsdaten gebildet. Eine Falls tudie mit Referenzdaten belegt, dass durch die Kombination dieser wissens-und datengetriebenen Methoden Clear-Sky-Momente zuverlässiger identifiziert werden können. Dadurch können Analysemethoden schneller und zuverlässiger Aussagen über die untersuchten PV-Anlagen treffen.

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Künstliche Intelligenz: Trends, Gefahren und Chancen

Interview für Radio Plassenburg, Sendung Heimat ist..., 7.2.2024.



Biological nitrogen fixation, diversity and community structure of diazotrophs in two mosses in 25 temperate forests

Groß , C.; Hossen, Shakhawat; Dittrich, S.; Knorr, K.-H.; Borken , W....

Environmental Microbiology 26, e16555.
DOI: 10.1111/1462-2920.16555


Open Access Peer Reviewed
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Ai-Aided Design

Markert, Michael (2024)

https://ai-productdesign.de 2024.


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An Energy Self-Sufficient Alpine Hut: The Refurbishment of an Ex-Tobacco Farm Using Building Integrated Photovoltaics

Bottino-Leone, Dario; Exner, Dagmar; Adami, Jennifer; Troi, Alexandra...

Buildings 14 (2), 518.
DOI: 10.3390/buildings14020518


Open Access Peer Reviewed
 

The abandonment and deterioration of historic rural buildings in Europe raise significant issues, including hydrogeological risks, the loss of productive land, and cultural heritage decline. Despite being underestimated, these structures hold significant potential for cultural and productive activities. Renovating these structures is crucial for local communities committed to preserving their heritage, and it is a more sustainable approach than constructing new buildings. This study explores activities undertaken in the Interreg IT/AT project “SHELTER” in Valbrenta (IT): through a participatory approach involving communities, stakeholders, designers, and researchers, an energy concept is developed for refurbishing an abandoned tobacco farm, chosen by the community, to be an alpine hut. Due to the inability to connect to the city electricity grid, the new energy concept focuses on minimizing consumption through envelope refurbishment, efficient heating, and domestic hot water systems. Additionally, the integration of renewable energy sources, particularly Building Integrated Photovoltaics (BIPV), is emphasized to preserve the building’s original appearance. This study demonstrates the feasibility of meeting seasonal energy needs entirely through renewables and explores the potential integration of biomass for meeting annual energy requirements.

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Application of the Guidelines for the Integration of Photovoltaics in Historic Buildings and Landscapes to Evaluate the Best Practices of the Historic Building Energy Retrofit Atlas

Di Rocco, Alice; Bottino-Leone, Dario; Troi, Alexandra; Herrera-Avellanosa, Daniel (2024)

Buildings 14 (2), 499.
DOI: 10.3390/buildings14020499


Open Access Peer Reviewed
 

The challenge of transforming historic buildings and city centers into energy-self-sufficient environments requires innovative solutions. The research project “BiPV meets History” addressed this challenge by providing comprehensive guidelines for assessing the integration of photovoltaic (PV) systems in protected historic architectural contexts. To validate these guidelines, this study conducts a thorough examination of best practices through the mentioned guidelines, developing an application tool. Recognizing the power of well-communicated best practices in overcoming obstacles to integrated photovoltaic adoption, this tool is used to assess PV integration quality with respect to the best practice contained in the HiBERatlas database. The analysis of 17 successful refurbishment cases highlighted the robustness and reliability of the proposed methodology, considering aesthetic, technical, and energy aspects. This study emphasizes the potential of the guidelines for achieving a harmonious integration of renewable energy solutions with historic architectural heritage and landscape and improving usability through the developed tool.

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Evaluating the Implementation of Energy Retrofits in Historic Buildings: A Demonstration of the Energy Conservation Potential and Lessons Learned for Upscaling

Herrera-Avellanosa, Daniel; Rose, Jørgen; Thomsen, Kirsten; Haas, Franziska...

Heritage 7 (2), 997–1013.
DOI: 10.3390/heritage7020048


Open Access Peer Reviewed
 

This study presents an in-depth analysis of 69 case studies focusing on the energy retrofit of historic buildings, uncovering challenges, best practices, and lessons learned to balance energy efficiency improvements with heritage preservation. The findings highlight several challenges encountered during renovations, such as complex heritage evaluations, restrictions on alterations, coordination issues with authorities, technical limitations, higher investment costs, and knowledge gaps. On the other hand, identifying factors promoting renovation, including demonstrating energy savings while respecting heritage, early collaboration between planners and authorities, and quantifying investments, could incentivize owners and authorities. The limitations of a still-limited sample size, occasional incomplete data, and potential sample bias call for cautious interpretation of the presented analysis. Despite these, the study provides valuable insights into successful projects, emphasizing the need for scalability, knowledge transfer from innovative policies, and targeted policy-making for successful replication. The study concludes with a call for further development of the HiBERatlas (Historic Building Energy Retrofit atlas), an extensive resource for historic building renovation, expanding its database, collaborating with agencies, and tailoring guidance for stakeholders to foster energy retrofits in heritage buildings.

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(AI4Coping)

Meißner, Karin; Grubert, Jens (2024)

Interview im TV Oberfranken, Sendung xxx, 31.01.2024.



Poultry litter biochar soil amendment affects microbial community structures, promotes phosphorus cycling and growth of barley (Hordeum vulgare).

Deinert, L.; Hossen, Shakhawat; Ikoyi, I.; Kwapinksi, W.; Noll, Matthias...

European Journal of Soil Biology 120, 103591.
DOI: 10.1016/j.ejsobi.2023.103591


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Tackling Learning Obstacles in Learning Videos by Thematic Ad-hoc Recommendations

Lehmann, Alexander; Landes, Dieter (2024)

M.E. Auer, U.R. Cukierman, E.V. Vidal und E. Tovar Caro (Hrsg.): Towards a Hybrid, Flexible and Socially Engaged Higher Education Band 1, 474-481.


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Hochschule Coburg

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Ansprechperson für Publikationsverzeichnis:

Monika Schnabel
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T +49 9561 317 8062
monika.schnabel[at]hs-coburg.de