University of Applied Sciences Emden Leer
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Real-Time Aspects of VR Systems
No full textThe term real-time refers to the ability of computer systems to deliver results reliably within a predictable – usually as short as possible – time span. Real-time capability is one of the most difficult requirements for VR systems: users expect a VR system to let them experience the effects of interactions without noticeable delays. This chapter deals with selected topics concerning the real-time capability of VR systems. In the first section, an overall view of VR systems shows which types of latencies occur between user input and system reaction. It also discusses how latencies of the sub-components of VR systems can be estimated or measured. The second section presents common methods for efficient collision detection, such as the use of bounding volumes, which are important in real-time simulation of dynamic virtual worlds. The third section deals with real-time aspects when rendering virtual worlds
VR-basierte Digital Reusable Learning Objects Ein interdisziplinäres Fortbildungskonzept für Bildungspersonal in der Pflegebildung
No full textSeit einigen Jahren finden VR-Technologien Einzug in die Gesundheitsberufe. Häufig wird der Einsatz durch Forschungsprojekte begleitet, eine mediendidaktische Einbettung oder lerntheoretische Begründung steht hier jedoch zumeist aus. Hinzu kommt, dass Schulungsmassnahmen zur Nutzung von VR-Technologien bisweilen den Fokus auf die Vermittlung von instrumentell-qualifikatorischen Bedienfähigkeiten legen. Der nachfolgende Artikel zeigt auf, wie das Modell des Technological Pedagogical Content Knowledge (TPACK) von Mishra und Koehler (2006) als Grundlage für die Konzeption interdisziplinär entworfener, sowohl fachwissenschaftlich und -didaktisch als auch medienpädagogisch begründeter Fortbildungsmassnahmen für Bildungspersonal in der Pflege genutzt werden kann. Neben der interdisziplinären Entwicklung der Fortbildungsmassnahme wird ein innovativer Ansatz zur niederschwelligen und praxisorientierten Erstellung und Nutzung von 360°-VR-Szenarien in der Pflegeausbildung vorgestellt
Simulation of mechanical relays under coupled electromagnetic physics and structural dynamics
No full textThe function of mechanical relays depends largely on the mechanics and electromagnetics. Both can be calculated separately using finite element analysis (FEA). In this specific application, the electromagnetic field, which is induced by a coil in the relay, generates forces in the component that lead to deformations in the geometry, which, in turn, influences the electromagnetic forces in the relay. The aim of this simulation is to couple both physics so that the mechanics and electromagnetics can be calculated in a combined model.
For this purpose, the properties for mechanical deformations and magnetic fields are simulated with the software Comsol Multiphysics. The electromagnetic forces are calculated in the electromagnetic model and coupled into the structure in the mechanical model using Maxwell’s surface tension tensor. The relay is operated by a voltage fed into the coil and is reset via a spring at the upper end of the relay. In this way, a work cycle of the relay can be simulated. The calculation can be used to determine the electromagnetic forces necessary to trigger the relay. Structural dynamic calculations in the electromagnetic field are possible, and the magnetic flux density in the corresponding areas can be optimised. Furthermore, interfering stray fields in the course of deformation can be determined, and the properties of the coil and the iron core can be optimised. This way, the function of a mechanical relay can be significantly improved
Converting sea weed to biogas energy: Utilization of synergism during co-digestion with maize silage
No full textCircular economy is a system solution framework replacing the traditional linear approach and aims at creating value from waste. Bladderwrack, a brown sea weed is often cast away in huge volumes on the North Sea coast and is perceived as a waste product. Removal of this algae incurs heavy costs for the municipal authorities since deposits of this sea wrack weakens and poses threat to the flood protective dikes and also to the tourism industry due to its unpleasant sight and smell. This study investigated the biogas potential of the nutrient-rich bladderwrack, Fucus vesiculosus, and co-digestion experiments were performed with maize silage. Mathematical simulations were performed with the Anaerobic Digestion Model No. 1 (ADM1) in order to assess optimal operational conditions and understand the reaction kinetics. While bladderwrack and maize silage on an average yielded 178 ml/g FM together during mono-fermentation, the co-digestion experiment provided 236 ml/g FM, clearly demonstrating the synergistic effect with nearly 33% more biogas. This means reduced dependence on a forage crop like maize by substituting it with a waste product like the brown sea weed along with attaining enhanced biogas production. This positive effect is reasoned to be due to the balanced C/N ratio in the digester during co-digestion. Furthermore, bladderwrack supplements trace metals and vitamins to the nutrient deficient maize silage. The ADM1 model indicated active microbial growth and activities and proved its competence in predicting the synergistic impacts with high accuracy
Zielgruppenspezifische Suchtprävention für Personen im Homeoffice
No full textDer Anstieg von Homeoffice-Erwerbsarbeit wirft neue Gestaltungs- und Jg 48 Umsetzungsfragen für die Praxis betrieblicher Suchtprävention auf. Grund dafür sind vor allem die veränderten Arbeitsbedingungen im Homeoffice. Auf Basis einer aktuellen Untersuchung zeigt der vorliegende Artikel, dass insbesondere hybride Konzepte, digitaler zwischenmenschlicher Austausch, entsprechende Schulungen, Datenschutz, Anonymität sowie zeitliche Flexibilität wichtige Erfolgsfaktoren zukünftiger Programme darstellen
The impact of the COVID-19 pandemic on the mental health of healthcare workers: study protocol for the COVID-19 HEalth caRe wOrkErS (HEROES) study
No full textBackground
Preliminary country-specific reports suggest that the COVID-19 pandemic has a negative impact on the mental health of the healthcare workforce. In this paper, we summarize the protocol of the COVID-19 HEalth caRe wOrkErS (HEROES) study, an ongoing, global initiative, aimed to describe and track longitudinal trajectories of mental health symptoms and disorders among health care workers at different phases of the pandemic across a wide range of countries in Latin America, Europe, Africa, Middle-East, and Asia.
Methods
Participants from various settings, including primary care clinics, hospitals, nursing homes, and mental health facilities, are being enrolled. In 26 countries, we are using a similar study design with harmonized measures to capture data on COVID-19 related exposures and variables of interest during two years of follow-up. Exposures include potential stressors related to working in healthcare during the COVID-19 pandemic, as well as sociodemographic and clinical factors. Primary outcomes of interest include mental health variables such as psychological distress, depressive symptoms, and posttraumatic stress disorders. Other domains of interest include potentially mediating or moderating influences such as workplace conditions, trust in the government, and the country’s income level.
Results
As of August 2021, ~ 34,000 health workers have been recruited. A general characterization of the recruited samples by sociodemographic and workplace variables is presented. Most participating countries have identified several health facilities where they can identify denominators and attain acceptable response rates. Of the 26 countries, 22 are collecting data and 2 plan to start shortly.
Conclusions
This is one of the most extensive global studies on the mental health of healthcare workers during the COVID-19 pandemic, including a variety of countries with diverse economic realities and different levels of severity of pandemic and management. Moreover, unlike most previous studies, we included workers (clinical and non-clinical staff) in a wide range of settings
Protocol for Identifying User Experience Aspects for Voice User Interfaces with Intensive Users
No full textPROFESSIONAL DEVELOPMENT OF UNIVERSITY TEACHERS AS A RESULT OF CAPACITY BUILDING IN THE MACICT PROJECT OF THE ERASMUS+ PROGRAMME
No full textEffective education plays a fundamental role in the development of society. To satisfy the demands and requirements of society education is to prepare an optimal response in every respect. In fulfilling this educational mandate,professionalism of teachers is of central importance. Professionalism includes good knowledge and a confident handling of pedagogical-didactic methods for teaching professional competences and transferable and soft skills.
Central objectives of the MaCICT-project (“Modernisation of Master Curriculum in ICT for Enhancing Student Employability in Belarus”) were to improve ICT education to meet the labour market needs and to optimise employability and self-employability of master graduates.
The MaCICT project started with a detailed research and analysis of the needs of the labour market regarding the required ICT skills. This research provided an insight into the needs of ICT professionals in Belarus. Subsequent research into current teaching methods and practices in universities revealed a gap between university training of ICT specialists and the needs of companies. Based on that research, the ICT master degree study programmes were modernised by introducing new study modules and updating the existing ones.
The pedagogical-didactic knowledge of the teachers was analysed to identify their training needs. Based on that analysis, a training programme was designed and implemented to cover the needs in a targeted way. By doing so, the specific needs of the ICT sector were targeted so that both interdisciplinarity setting and teaching of transferable/soft skills were in the foreground.
The focal point of the project was the development of a new or updating of the existing MSc study programmes in the field of ICT at five Belarusian partner universities in five different regions in the country. Simultaneously, the project has a forward-looking and far-reaching goal of turning towards and gradual introduction of interactive education and students’ active learning through application of innovative pedagogical approaches and methods. Here, the main objective was the introduction of learning design to the process of academic development. Though, this project can be perceived as one step forward within the ongoing process of modernisation and improvement of the Belarusian system of higher education.
Among the few immediate effects of the MACICT project on the participating academic staff at the five Belarusian beneficiaries were:
1) forming skills in designing a study module and structuring the curriculum based on learning outcomes of its modules;
2) enhancing skills in formal description of the study module in its syllabus;
3) developing skills of organising supporting materials for students to back up the turn to student-centred education, and
4) enhancing use of appropriate pedagogical approaches and teaching and learning methods to match student-centredness and labour-market orientation of outcomes-based education.
This work reports the impact of capacity building within the MaCICT project on teaching staff in Belarus. The results are measured by changes in the experiences of the teachers and changes in the performance of students. Although the long-term effects of this contribution cannot be observed or even expected at the time being, the immediate impact of the project on the targeted audiences is evident. Possible future developments towards the sustainability of the project results will be discussed
Development of a Prototype for a Process Support and Analysis Platform for Small and Medium-sized Enterprises
No full textThis paper presents a prototype for an information exchange system, which allows information exchange between companies without actually sharing data. First, the need for such an intercompany exchange platform is explained and the value for supply chains resulting from such a platform is described. A literature review presents the existing concepts and techniques contributing to the development of an architecture. Finally. The information exchange concept and the prototype implementation are explained in detail
IoT Device for Reduction of Roe Deer Fawn Mortality During Haymaking
No full textIn this paper, we propose a novel approach in smart farming with the deployment of centrally controlled IoT-scaring devices in meadows with the goal to reduce the killing of roe deer fawn during haymaking. These deaths are due to fawns not actively avoiding threats in their first two weeks of life, employing a defensive strategy of hiding scentless and motionless in order to avoid predation instead. Currently, they are searched and removed from areas to be mowed by hand. Our approach allows for a reduction of the labour required in advance of a scheduled mowing. During field tests, the effectiveness of the devices has been shown in northern Germany