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A conductivity-based, batch-optimized system for analyzing the total of carbon parameter in water
No full textIn cooperation with the company Purification Membranes Analytics GmbH (PMA), a prototype has been developed that analyzes the total organic carbon (TOC) content of water samples based on a complex conductivity measurement. In the process, a batchoptimized system was developed that delivers qualitative results even in highly polluted waters. This method requires small sample volumes and was assembled using an ultrapure water system, a sample mixing system, various electronic control units and a miniTOC system that uses a UV light source to decompose organic carbons and outputs differential values using two conductivity sensors. During the project, a fully automated prototype was developed and is ready for use. In the future, this method could support common methods and lead to more accurate statements on water quality in a cost-effective manner
Optimized fuel values for emission reduction
No full textAviation is an integral and vital part of modern society. The growth over the last decades has consequences for greenhouse gas emissions and reducing this through efficiency within the same framework is difficult. Precision flight planning is crucial for reliably and optimized real environment aircraft operation. The presented study gives an overview of the status of the legal requirements for flight planning under the current fuel requirements of the European Union Aviation Safety Agency (EASA) and the emerging opportunities for fuel savings. As part of the larger study, planned and actual fuel figures of an international cargo airline were statistically analyzed. The overall analysis showed that there was no significant deviation between planned and consumed fuel. Based on the results, an adjustment of the planned alternative fuel quantity can be considered within the framework of an individual fuel plan. The possible savings potential using the example of Destination Alternate Airport fuel is presented
Predictive Policing – Eine kritische Bestandsaufnahme am Beispiel der Dimension Raum
No full textDieser Beitrag bietet eine kritische Bestandsaufnahme des Predictive Policing am Beispiel der Dimension Raum. Unter Berücksichtigung der aktuellen Entwicklungen des europäischen AI-Acts werden Maßnahmen und Methoden beleuchtet und aus ethischer Perspektive reflektiert und diskutiert. Das methodische Fundament bildet eine systematische Literaturanalyse anhand einer Korpusanalyse zu Techniken des Predictive Policing. Es werden vorhandene wissenschaftliche Vorarbeiten vorgestellt und ethische Fragestellungen im Zusammenhang mit der Verwendung von Daten für Predictive Policing untersucht. Der Beitrag eröffnet wichtige Fragen, die es weiter zu erforschen gilt. Die aktuellen Entwicklungen im Rahmen des AI-Acts bestätigen die Relevanz der Thematik
Connected Driving in German-Speaking Social Media
No full textIntelligent transportation systems (ITS) have been steadily becoming part of our reality. For their successful integration, studying and understanding public opinions and acceptance is important. Social media platforms offer an extensive opportunity for opinion mining. While there have been studies on people’s attitudes towards automated driving, another important ITS concept—connected driving—has received little to no attention. In the current study, data on how connected driving is represented and perceived were collected from German(-speaking) Reddit and Twitter. In relevant Reddit entries, the necessity of communication between vehicles was discussed almost exclusively in the context of automated driving. On Twitter, mostly shared news and information on the topic are presented, while the number of personal opinions is low. The most concerning subtopic seems to be cybersecurity, which reflects a general trend of data protection issues discussed in society
Homo remotus - Kritik zur Führung auf Distanz
No full textWie sich die Welt um uns herum verändert, nehmen wir wohl so wahr, als würde darunter eine Beschleunigungskraft wirken.
Die Entwicklung gesellschaftlicher Interaktionen wird von uns Menschen selbst angetrieben. Je mehr sich die eine oder andere Gruppe in eine bestimmte Richtung verhält, umso mehr wirkt das Gruppenverhalten als Entwicklungstendenz.
Die technisch vernetzte Welt drängt seit über 20 Jahren in unseren Lebens- und Arbeitsalltag vor. Die fast drei Jahre andauernde Corona- Pandemie hat unter Druck von Kontaktbeschränkungen die Nutzung der technischen Möglichkeiten beschleunigt und damit Arbeitsflexibilität und -mobilität in einer Weise realisiert, wie dies zuvor noch nie der Fall war.
Arbeitswelt ist Lebenswelt; und deshalb wirkt sich ein zunehmendes Potenzial an Distanzinteraktionen auf wirtschaftliche, soziale, psychische, rechtliche und/oder kulturelle Bedingungen aus
Bericht Forschung und Transfer 2022
No full textProjekte und Publikationen der Technischen Hochschule Wildau aus dem Jahr 2022
Determination of scattering and Urbach absorption contributions to the light extinction in PTFE films by using graphical representation technique and numerical solution of the inverse problem
No full textEllipsometrically obtained spectral dependences of ordinary αxy and extra-ordinary αz extinction/attenuation coefficients within the spectral range λ = 300…980 nm of uniaxially anisotropic polytetrafluoroethylene (PTFE) films were analyzed. We considered the capabilities and specific features of the graphical representation technique for determining the contribution of Rayleigh scattering and Urbach absorption to light attenuation in the spectral range beyond fundamental absorption. It has been shown that the graphical approach enables to estimate these contributions qualitatively, semi-quantitatively or quantitatively, depending on the situation. The conclusions made using the analysis of graphical representation are confirmed by numerical solution of the inverse problem via simulation of the αxy (λ), αz (λ) experimental dependences within the framework of a best-fit procedure. Being based on both of these approaches, we have ascertained that, in the as-prepared PTFE films, the so-called anomalous light scattering (ALS) with the spectral dependence of scattering coefficient αs ≈ as λ–p (p > 4) takes place. Transformation of scattering from ALS to the Rayleigh one with p ≈ 4 due to annealing is accompanied by an increase of Urbach (subband) absorption. Both of these factors cause narrowing the dynamic range of extinction coefficient values. Both scattering and absorption coefficients are higher for the component of light polarized along the normal to the substrate as compared to the component polarized in parallel to it. The relationship between observed behavior of the scattering and absorption coefficients and the film structure has been discussed
Plasmonic Nanostructures - Basic Concepts, Optimization and Applications
No full textPlasmonics includes the fundamentals of surface plasmon polaritons in metals, and its rapidly increasing applications in biochemistry, nanotechnology, optical communication, sensing, and medicine. Surface plasmon polaritons have become popular because of their ultrasensitive optical measurement capabilities, and in recent years they have also been employed for ultra-high-speed data transfer. This book presents recent advances in the broad field of plasmonics, covering not only current progress and the latest breakthroughs in emergent applications but also geometry optimizations and the fundamentals of physical interactions
Features of technological regulation for cardiac bioimplants
No full textPatients with congenital heart defects and cardiovascular diseases are required new approaches to surgical intervention. The use of biological cardiac implants, which are made from the extracellular matrix, is a promising trend in modern regenerative medicine. These bioimplants can completely replace defective tissue or organs, and when manufactured with strict protocols and quality control measures, can be safe and effective for therapeutic applications. The process of manufacturing bioimplants involves various risks that need to be assessed and mitigated with ongoing monitoring and evaluation necessary to ensure the highest standards of quality. Overall, this study was successfully evaluated the requirements for introducing a new medical device into practice and created a technical file that meets all necessary documentation for certification
Automated subject classification for classes of the Regensburger Verbundklassifikation using the toolkit Annif
No full textDas Toolkit Annif ist ein modulares Werkzeug zur automatisierten Sacherschließung, mit dem über verschiedene Verfahren des maschinellen Lernens Schlagwörter oder Notationen zu Dokumenten vorgeschlagen werden. In dieser Arbeit wird untersucht, ob mit Annif Ergebnisse erzielt werden können, die einen praktischen Einsatz für Bibliotheken im deutschsprachigen Raum rechtfertigen. Getestet wird die Vergabe von Notationen der Regensburger Verbundklassifikation (RVK) an deutschsprachigen monografischen Texten. Dabei wird auch untersucht, wie aufwändig die Beschaffung und Aufbereitung von geeigneten Daten für das Training ist. Es wird eine Auswahl von drei angebotenen Verfahren evaluiert. Hierzu werden Metadaten mit RVK-Notationen der Hauptgruppe S beispielhaft ausgewertet. Zusätzlich wird getestet, ob ein Training mit Volltexten die Qualität der Ergebnisse verbessert. Die Arbeit zeigt auf, welches Verfahren für die ausgewählten Daten am besten geeignet ist und erläutert, welche Herausforderungen es in Bezug auf die Vergabe von RVK-Notationen gibt und welche Aspekte bei der Zusammensetzung der Trainingsdaten besonders berücksichtigt werden müssen.Annif is a modular toolkit for automated subject indexing that is used to suggest subject keywords or class notations for documents using various machine learning methods. This thesis examines whether Annif can be used to achieve results that justify its practical use for libraries in German-speaking countries. An assignment of class notations of the Regensburger Verbundklassifikation (RVK, a common German classification system) to German-language monographic resources will be tested. The effort which is needed to receive data and prepare it for use in Annif will also be assessed. A selection of metadata which contain class notations of topics linked to the letter S in the RVK will be used to evaluate the system. In addition, it will be tested whether a use of full texts for training will increase the quality of the results. The work shows which method is best suited for the selected data and explains the challenges which arise regarding the assignment of RVK class notations and discusses aspects which must be given special consideration in the composition of the training data