TY - BOOK A1 - Remmerbach, Klaus-Ulrich A1 - Krumme, Robin T1 - The effectiveness of compliance management systems N2 - This working paper addresses the effectiveness of compliance management systems (CMS). The objective is to answer the question whether CMS are effective, and to consider the limits of compliance. For this purpose, the highly legalistic topic is considered in the context of business ethics and behavioural economic foundations. The review of effectiveness is based on the seven basic components set out in the Assurance Standard of the Institut der Wirtschaftsprüfer in Deutschland e. V. [Institute of Public Auditors in Germany, Incorporated Association] (IDW AssS 980). To answer this question, reference is made to the three levels of business ethics and to selected behavioural economics concepts. For example, performance pressure, peer pressure and variable compensation schemes encourage opportunistic behaviour. It is argued that corporate compliance depends significantly on the behaviour of single individuals and their environment. Especially in the context of economic activity and competition, compliance cannot be equated to morality and ethics, or be expected as a matter of course. On the whole, the interdisciplinary consideration of corporate compliance demonstrates a natural limit whenever ethical and moral standards are contrary to economic interests. T3 - ITB-Arbeitsberichte - 10 Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:836-opus-177857 SN - 978-3-947263-21-9 PB - FH Münster CY - Münster ER - TY - JOUR A1 - Kernebeck, Sven A1 - Busse, Theresa S A1 - Böttcher, Maximilian D A1 - Weitz, Jürgen A1 - Ehlers, Jan A1 - Bork, Ulrich T1 - Impact of mobile health and medical applications on clinical practice in gastroenterology JF - World Journal of Gastroenterology N2 - Mobile health apps (MHAs) and medical apps (MAs) are becoming increasingly popular as digital interventions in a wide range of health-related applications in almost all sectors of healthcare. The surge in demand for digital medical solutions has been accelerated by the need for new diagnostic and therapeutic methods in the current coronavirus disease 2019 pandemic. This also applies to clinical practice in gastroenterology, which has, in many respects, undergone a recent digital transformation with numerous consequences that will impact patients and health care professionals in the near future. MHAs and MAs are considered to have great potential, especially for chronic diseases, as they can support the self-management of patients in many ways. Despite the great potential associated with the application of MHAs and MAs in gastroenterology and health care in general, there are numerous challenges to be met in the future, including both the ethical and legal aspects of applying this technology. The aim of this article is to provide an overview of the current status of MHA and MA use in the field of gastroenterology, describe the future perspectives in this field and point out some of the challenges that need to be addressed. Y1 - 2020 U6 - http://dx.doi.org/10.3748/wjg.v26.i29.4182 SN - 1007-9327 VL - 26 SP - 4182 EP - 4197 ER - TY - JOUR A1 - Draber, F.M. A1 - Ader, C. A1 - Arnold, J. A1 - Eisele, S. A1 - Grieshammer, S. A1 - Yamaguchi, S. A1 - Martin, M. T1 - Nanoscale percolation in doped BaZrO3 for high proton mobility JF - Nature Mater Y1 - 2020 U6 - http://dx.doi.org/10.1038/s41563-019-0561-7 VL - 19 SP - 338 EP - 346 ER - TY - JOUR A1 - Schütt, J. A1 - Schultze, T. A1 - Grieshammer, S. T1 - Oxygen ion migration and conductivity in LaSrGa3O7 melilites from first principles JF - Chem. Mater Y1 - 2020 U6 - http://dx.doi.org/10.1021/acs.chemmater.9b04599 VL - 32 SP - 4442 EP - 4450 ER - TY - JOUR A1 - Grieshammer, S. A1 - Momenzadehd, L. A1 - Belova, I.V. A1 - Murch, G.E. T1 - Ionic and thermal conductivity of pure and doped ceria by molecular dynamics JF - Solid State Ionics Y1 - 2020 U6 - http://dx.doi.org/10.1016/j.ssi.2020.115424 VL - 355 SP - 115424 ER - TY - JOUR A1 - Eisele, S. A1 - Grieshammer, S. T1 - MOCASSIN: Metropolis and kinetic Monte Carlo for solid Electrolytes JF - J. Comput. Chem Y1 - 2020 U6 - http://dx.doi.org/10.1002/jcc.26418 VL - 41 SP - 2663 EP - 2677 ER - TY - JOUR A1 - Koettgen, J. A1 - Grieshammer, S. A1 - Dück, G. A1 - Ulbrich, G. A1 - Lerch, M. A1 - Martin, M. T1 - Ab initio and experimental conductivity in Sm-Zr and Gd-Zr co-doped ceria JF - Solid State Ionics Y1 - 2020 U6 - http://dx.doi.org/10.1016/j.ssi.2020.115422 VL - 355 SP - 115422 ER - TY - CHAP A1 - Lilienthal, Jonas A1 - Sonnenschein, Ines T1 - Exploring future work processes – Conclusions from an interdisciplinary project in Building Information Modeling T2 - ETH Learning and Teaching Journal Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:836-opus-171012 VL - 2 IS - 2 SP - 271 EP - 275 ER - TY - GEN A1 - Sanfilippo-Schulz, Jessica T1 - “Hungry for a home in Susan Abulhawa’s ‘Memories in an Un-Palestinian Story, in a Can of Tuna’.” The Diasporic Plate: Food in the Contemporary Diasporic World in Times of Crisis (28 November 2020) Institute of Modern Languages Research, London KW - Food, Susan Abulhawa, adoption, childhood Y1 - 2020 ER - TY - JOUR A1 - Sanfilippo-Schulz, Jessica T1 - Riccardino - The Dead Lines of Andrea Camilleri JF - Crossed Lines Exhibition, AHRC-funded research project led by Dr Sarah Jackson (Nottingham Trent University) in partnership with the Science Museum and the BT Archives KW - Translation, telephone lines, Andrea Camilleri, Montalbano Y1 - 2020 UR - https://crossedlines.co.uk/online-exhibition/ ER - TY - JOUR A1 - Sanfilippo-Schulz, Jessica T1 - Daughters and Mothers JF - Corona Lost and Found: A Pandemic Archive. Rebecca Adelman (Ed.) KW - Creative writing, lock-down Y1 - 2020 UR - https://pandemicarchive.com/daughters-and-mothers/ ER - TY - JOUR A1 - Ristau, Patrick A1 - Oetting-Roß, Claudia A1 - Büscher, Andreas T1 - Mapping the knowledge on coping processes in patients with pancreatic cancer: a scoping review protocol. JF - Social Science Protocols Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:836-opus-170113 VL - 3 IS - 1 SP - 1 EP - 15 PB - Edinburgh Diamond ER - TY - GEN A1 - Boentert, Annika T1 - The CORE model for Quality Development - A case study of FH Münster (HAQAA - Workshop, Harmonisation of African Higher Education Quality Assurance and Accreditation) KW - Quality Management, Higher Education management, Accreditation Y1 - 2020 ER - TY - JOUR A1 - Biessey, Philip A1 - Bayer, Hakan A1 - Theßeling, Christin A1 - Grünewald, Marcus T1 - Prediction of Bubble Sizes in Bubble Columns with Machine Learning Methods JF - Chemical Engineering Research and Design Y1 - 2020 U6 - http://dx.doi.org/10.1016/j.cherd.2020.08.020 VL - 2020 IS - 163 SP - 47 EP - 57 ER - TY - JOUR A1 - Tan, Shu Ling A1 - Jetzke, Malte A1 - Vergeld, Vera A1 - Müller, Carsten T1 - Independent and Combined Associations of Physical Activity, Sedentary Time, and Activity Intensities With Perceived Stress Among University Students: Internet-Based Cross-Sectional Study JF - JMIR Public Health and Surveillance N2 - Background: Mental health is an emerging topic on university campuses, with students reporting higher levels of psychological distress than the general population of the same age. Increasing physical activity and reducing sedentary time have been proved promising measures to promote mental health in the general population. However, to derive and implement effective measures to promote mental health among university students, further exploration of the associations between physical activity, sedentary time, and perceived stress in this specific setting is needed. Objective: This study aims to identify associations between physical activity, sedentary time, and perceived stress after controlling for sociodemographic and behavioral variables among university students in Germany. We hypothesize that perceived stress is inversely related to physical activity and positively associated with sedentary time. Furthermore, we hypothesize that combined associations of concurrently high physical activity and low sedentary time on perceived stress are stronger compared with either alone and that the association between physical activity and perceived stress depends on activity intensity. Methods: We conducted cross-sectional analyses from a large-scale internet-based student health survey (n=4189; response rate=10.0%). Physical activity, sedentary time, and engaging in moderate and vigorous activity intensities were assessed using the International Physical Activity Questionnaire Short Form with categorization into low, intermediate, and high levels. We measured perceived stress using the 10-item Perceived Stress Scale (range 0-40). Results: The results indicate that higher physical activity and lower sedentary time are associated with reduced levels of perceived stress. Following adjustment for gender, BMI, income, fruit and vegetable intake, alcohol consumption, and sleep quality, perceived stress scores were lower for students reporting high physical activity levels and low sedentary time compared with the least active and highly sedentary students (Perceived Stress Scale –2.2, 95% CI –2.9 to –1.5, P<.001 for physical activity and –1.1, CI 95% –1.7 to –0.5, P<.001 for sedentary time). Combined associations with perceived stress revealed that students concurrently reporting high total physical activity and low sedentary time reported the lowest perceived stress scores of all possible combinations following adjustment for confounders (Perceived Stress Scale –3.5, CI 95% –4.6 to –2.5, P<.001 compared with students reporting low physical activity levels and concurrently high sedentary time). Associations between vigorous physical activities and perceived stress were not stronger compared with moderate activity intensities. Conclusions: Self-reported physical activity and low sedentary time are favorably associated with perceived stress, while the intensity of physical activities seems to be of minor importance. These results help to effectively implement health-promoting measures on campus among university students through increasing physical activity and reducing sedentary time. KW - physical activity KW - sedentary time KW - perceived stress KW - university students KW - intensity of physical activity Y1 - 2020 UR - https://publichealth.jmir.org/2020/4/e20119/ U6 - http://dx.doi.org/10.2196/20119 VL - 6 IS - 4 SP - 1 EP - 14 ER - TY - CHAP A1 - Kappelhoff, J. A1 - Jüstel, T. T1 - Nanoscale UV-B emitting Scintillator - LuPO4:Pr3+,Gd3+ T2 - Jungchemiker Forum, Köln-Leverkusen, Germany Y1 - 2020 ER - TY - CHAP A1 - Jüstel, T. A1 - Baur, F. T1 - Applications of Pr3+ Phosphors to Fight the Covid-19 Pandemic T2 - ICOM-ASIA 2020, Chongqing Y1 - 2020 ER - TY - CHAP A1 - Schwung, S. A1 - Pues, P. A1 - Jüstel, T. A1 - Enseling, D. A1 - Wesemann, V. A1 - Rytz, D. T1 - Standards for Quantitive Luminescence Measurements T2 - WODIL 2020, Berlin, Germany Y1 - 2020 ER - TY - CHAP A1 - Pues, P. A1 - Schwung, S. A1 - Rytz, D. A1 - Jüstel, T. T1 - Temperature and Time Dependent Luminescence of Single Crystalline KTb3F10 T2 - WODIL 2020, Berlin, Germany Y1 - 2020 ER - TY - CHAP A1 - Jüstel, T. A1 - Baur, F. T1 - Sensitisation of Ceramic Eu3+ Phosphors for Solid State Lighting T2 - CIMTEC 2020, Montecatini Terme, Italy Y1 - 2020 ER - TY - CHAP A1 - Baur, F. A1 - Jüstel, T. T1 - Utilizing Deep-red Emitting Mn4+ Phosphors for Horticultural Lighting T2 - CIMTEC 2020, Montecatini Terme, Italy Y1 - 2020 ER - TY - CHAP A1 - Baur, F. A1 - Jüstel, T. T1 - Enabling Warm-White LEDs with Very High Luminous Efficacy by Use of Uranyl Sensitized Eu3+ T2 - ICRTAM-2020, Online-Conference Y1 - 2020 ER - TY - CHAP A1 - Keil, J.-N. A1 - Jüstel, T. T1 - Properties of Garnet Type Phosphors in Dependence on the Synthesis Route T2 - Jungchemiker Forum, Köln-Leverkusen, Germany Y1 - 2020 ER - TY - CHAP A1 - Pues, P. A1 - Exeler, J. A1 - Jüstel, T. T1 - Egyptian Blue – An Efficient Infrared Emitting Blue Pigment T2 - Jungchemiker Forum, Köln-Leverkusen, Germany Y1 - 2020 ER - TY - GEN A1 - Fairhurst, Gorry A1 - Jones, Tom A1 - Tüxen, Michael A1 - Rüngeler, Irene A1 - Völker, Timo T1 - Packetization Layer Path MTU Discovery for Datagram Transports Y1 - 2020 UR - https://www.rfc-editor.org/info/rfc8899 U6 - http://dx.doi.org/10.17487/RFC8899 PB - IETF ER - TY - CHAP A1 - Weinrich, Sören A1 - Pröter, Jürgen A1 - Hofmann, Josephine A1 - Kube, Jürgen T1 - Mass balancing of biogas plants T2 - Collection of Measurement Methods for Biogas Y1 - 2020 SN - 978-3-946629-47-4 SP - 381 EP - 392 PB - DBFZ ER - TY - JOUR A1 - Astals, Sergi A1 - Koch, Konrad A1 - Weinrich, Sören A1 - Hafner, Sasha D. A1 - Tait, Stephan A1 - Peces, Miriam T1 - Impact of Storage Conditions on the Methanogenic Activity of Anaerobic Digestion Inocula JF - Water Y1 - 2020 U6 - http://dx.doi.org/10.3390/w12051321 SN - 2073-4441 VL - 12 IS - 5 ER - TY - JOUR A1 - Schumacher, Britt A1 - Zerback, Timo A1 - Wedwitschka, Harald A1 - Weinrich, Sören A1 - Hofmann, Josephine A1 - Nelles, Michael T1 - The Influence of Pressure-Swing Conditioning Pre-Treatment of Cattle Manure on Methane Production JF - Bioengineering Y1 - 2020 U6 - http://dx.doi.org/10.3390/bioengineering7010006 SN - 2306-5354 VL - 7 IS - 1 ER - TY - JOUR A1 - Hofmann, Josephine A1 - Müller, Liane A1 - Weinrich, Sören A1 - Debeer, Lies A1 - Schumacher, Britt A1 - Velghe, Filip A1 - Liebetrau, Jan T1 - Assessing the Effects of Substrate Disintegration on Methane Yield JF - Chemical Engineering & Technology Y1 - 2020 U6 - http://dx.doi.org/10.1002/ceat.201900393 SN - 0930-7516 VL - 43 IS - 1 SP - 47 EP - 58 ER - TY - JOUR A1 - Janke, Leandro A1 - McDonagh, Shane A1 - Weinrich, Sören A1 - Murphy, Jerry D. A1 - Nilsson, Daniel A1 - Hansson, Per-Anders A1 - Nordberg, Åke T1 - Optimizing power-to-H2 participation in the Nord Pool electricity market: Effects of different bidding strategies on plant operation JF - Renewable Energy Y1 - 2020 U6 - http://dx.doi.org/10.1016/j.renene.2020.04.080 SN - 0960-1481 VL - 156 SP - 820 EP - 836 ER - TY - JOUR A1 - Janke, Leandro A1 - McDonagh, Shane A1 - Weinrich, Sören A1 - Nilsson, Daniel A1 - Hansson, Per-Anders A1 - Nordberg, Åke T1 - Techno-Economic Assessment of Demand-Driven Small-Scale Green Hydrogen Production for Low Carbon Agriculture in Sweden JF - Frontiers in Energy Research Y1 - 2020 U6 - http://dx.doi.org/10.3389/fenrg.2020.595224 SN - 2296-598X VL - 8 ER - TY - JOUR A1 - Koch, Konrad A1 - Hafner, Sasha D. A1 - Weinrich, Sören A1 - Astals, Sergi A1 - Holliger, Christof T1 - Power and Limitations of Biochemical Methane Potential (BMP) Tests JF - Frontiers in Energy Research Y1 - 2020 U6 - http://dx.doi.org/10.3389/fenrg.2020.00063 SN - 2296-598X VL - 8 ER - TY - JOUR A1 - Koch, Konrad A1 - Hafner, Sasha D. A1 - Astals, Sergi A1 - Weinrich, Sören T1 - Evaluation of Common Supermarket Products as Positive Controls in Biochemical Methane Potential (BMP) Tests JF - Water Y1 - 2020 U6 - http://dx.doi.org/10.3390/w12051223 SN - 2073-4441 VL - 12 IS - 5 ER - TY - CHAP A1 - Weinrich, Sören A1 - Astals, Sergi A1 - Hafner, Sasha D. A1 - Koch, Konrad T1 - Kinetic modelling of anaerobic batch tests T2 - Collection of Measurement Methods for Biogas Y1 - 2020 SN - 978-3-946629-47-4 SP - 349 EP - 369 PB - DBFZ ER - TY - GEN A1 - Salameh, Samir A1 - Penners, Jack A1 - Zeichner, Achim T1 - Evaporative cooler with controlled cooling effect. WO/2020/187518 Y1 - 2020 UR - https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2020187518 SP - 1 EP - 34 ER - TY - JOUR A1 - Yu, Cunming A1 - Sasic, Srdjan A1 - Lui, Kai A1 - Salameh, Samir A1 - Ras, Robin A1 - van Ommen, Ruud T1 - Nature–Inspired self–cleaning surfaces: Mechanisms, modelling, and manufacturing JF - Chemical Engineering Research and Design Y1 - 2020 U6 - http://dx.doi.org/10.1016/j.cherd.2019.11.038 VL - 155 SP - 48 EP - 65 ER - TY - CHAP A1 - Ibenthal, E. A1 - Sobkowicz, S. A1 - Backhaus, C T1 - Investigation of Clamping and Crushing Injuries with Electrically Height-Adjustable Therapy Beds T2 - Contribution to the 22th International Human Computer Interaction Conference Y1 - 2020 U6 - http://dx.doi.org/10.1007/978-3-030-49904-4_10 SP - 132 EP - 144 ER - TY - JOUR A1 - Ibenthal, E. A1 - Kehmann, M. A1 - Backhaus, C. T1 - Feasibility of a Music System Intervention to Affect Mental Stress and Strain of Employees in Inpatient Dementia Care JF - Annals of Work Exposures and Health Y1 - 2020 U6 - http://dx.doi.org/10.1093/annweh/wxaa120 VL - 65 SP - 591 – 604 ER - TY - CHAP A1 - Harth, Thilo A1 - Panke, Stefanie T1 - Thinking Inside the Box: Does Design Thinking Fit into Zoom Squares? T2 - Innovative Learning Summit. Theo J. Bastiaens, Gary H. Marks (Eds.) N2 - The article describes and evaluates the concept and format of a 2-day design thinking workshop with vocational teacher candidate students. Drawing from our experiences as instructors as well as the qualitative feedback we received from students, we critically discuss what worked well and what was lost. We contrast the outcomes of this workshop with previous design thinking activities. The results highlight the qualities of design thinking that necessitate interaction in physical spaces, as well as opportunities for design thinking activities in a digitized format. As many regions experience second waves of COVID-19, educational programs will face the challenge of transforming physically co-located instruction to a completely virtual format. Our results can serve as a guide on how to recuperate energy and engagement for highly interactive seminars and workshops KW - Online Learning Y1 - 2020 UR - https://www.learntechlib.org/primary/p/218832/ SP - 423 EP - 434 ER - TY - JOUR A1 - Müller-Hagemann, M. A1 - Albayrak, I A1 - Auel, C A1 - Boes, RM T1 - Field Investigation on Hydroabrasion in High-Speed Sediment-Laden Flows at Sediment Bypass Tunnels JF - Water 12 (2) N2 - Wear due to sediment particles in fluid flows, also termed hydroabrasion’ or simply ‘abrasion’, is an omnipresent issue at hydraulic structures as well as in bedrock rivers. However, interactions between flow field, particle motion, channel topography, material properties and abrasion have rarely been investigated on a prototype scale, leaving many open questions as to their quantitative interrelations. Therefore, we investigated hydroabrasion in a multi‐year field study at two Swiss Sediment Bypass Tunnels (SBTs). Abrasion depths of various invert materials, hydraulics and sediment transport conditions were determined and used to compute the abrasion coefficients kv of different abrasion models for high‐strength concrete and granite. The results reveal that these models are useful to estimate spatially averaged abrasion rates. The kv‐value is about one order of magnitude higher for granite than for high‐strength concrete, hence, using material‐specific abrasion coefficients enhances the prediction accuracy. Three‐dimensional flow structures, i.e., secondary currents occurring both, in the straight and curved sections of the tunnels cause incision channels, while also longitudinally undulating abrasion patterns were observed. Furthermore, hydroabrasion concentrated along joints and protruding edges. The maximum abrasion depths were roughly twice the mean abrasion depths, irrespective of hydraulics, sediment transport conditions and invert material. Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:836-opus-151268 PB - MDPI CY - Basel ER - TY - CHAP A1 - Reinker, Felix A1 - Wagner, Robert A1 - Passmann, Maximilian A1 - Hake, Leander A1 - aus der Wiesche, Stefan T1 - Performance of a Rotatable Cylinder Pitot Probe in High Subsonic Non-ideal Gas Flows T2 - Proceedings of the 3rd International Seminar on Non-Ideal Compressible Fluid Dynamics for Propulsion and Power. Hrsg.: Matteo Pini, Carlo de Servi, Andrea Spinelli, Francesca di Mare, Alberto Guardone. ERCOFTAC Series book series (ERCO, volume 28) Y1 - 2020 SN - 978-3-030-69306-0 U6 - http://dx.doi.org/10.1007/978-3-030-69306-0 SP - 144 EP - 152 PB - Springer CY - Berlin ER - TY - CHAP A1 - Reinker, Felix A1 - aus der Wiesche, Stefan T1 - Application of Hot-Wire Anemometry in the High Subsonic Organic Vapor Flow Regime T2 - Proceedings of the 3rd International Seminar on Non-Ideal Compressible Fluid Dynamics for Propulsion and Power. Hrsg.: Matteo Pini, Carlo de Servi, Andrea Spinelli, Francesca di Mare, Alberto Guardone. ERCOFTAC Series book series (ERCO, volume 28) Y1 - 2020 SN - 978-3-030-69306-0 U6 - http://dx.doi.org/10.1007/978-3-030-69306-0 SP - 135 EP - 143 PB - Springer CY - Berlin ER - TY - CHAP A1 - Passmann, Maximilian A1 - aus der Wiesche, Stefan A1 - Povey, Thomas A1 - Bergmann, Detlef T1 - Effect of Reynolds Number on Five-Hole Probe Performance: Experimental Study of the Open-Access Oxford Probe T2 - Proceedings ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition, September 21–25, 2020, Virtual, Online, GT2020-16074, V005T05A028; 12 pages Y1 - 2020 ER - TY - CHAP A1 - aus der Wiesche, Stefan T1 - A Simplified Model for Predicting Natural Draft Wet Cooling Tower Performance of Large Steam Power Plants T2 - Proceedings ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition, September 21–25, 2020, Virtual, Online, GT2020-15369, V009T23A020, 12 pages Y1 - 2020 ER - TY - JOUR A1 - Passmann, Maximilian A1 - aus der Wiesche, Stefan A1 - Joos, Franz T1 - Focusing schlieren visualization of transonic turbine tip-leakage flows JF - Int. J. Turbomachinery Propulsion Power Y1 - 2020 U6 - http://dx.doi.org/10.3390/ijtpp5010001 VL - 5 IS - 1 ER - TY - JOUR A1 - aus der Wiesche, Stefan T1 - Stagnation Flow and Heat Transfer From a Finite Disk Situated Perpendicular to a Uniform Stream JF - ASME Journal of Fluids Engineering Y1 - 2020 VL - 142 IS - 3 SP - 031108 (15 pages) ER - TY - CHAP A1 - Völker, Timo A1 - Volodina, Ekaterina A1 - Tüxen, Michael A1 - Rathgeb, Erwin Paul T1 - A QUIC Simulation Model for INET and its Application to the Acknowledgment Ratio Issue T2 - 2020 IFIP Networking Conference N2 - Quick UDP Internet Connections (QUIC) is a novel transport protocol introducing known features in a new protocol design. To investigate these features and the design, we developed a QUIC implementation in the INET simulation model suite. In this paper, we describe that implementation, its validation and a result achieved using the simulation model. The result shows the negative impact on throughput, when raising the acknowledgment ratio. We propose a solution and describe how it solves the issue. KW - QUIC KW - INET OMNeT++ KW - Protocol Simulation KW - Transport Protocol KW - Ack Ratio Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:836-opus-149662 UR - https://ieeexplore.ieee.org/document/9142723 SN - 978-3-903176-28-7 SP - 737 EP - 742 PB - IEEE CY - New York, NY, USA ER - TY - JOUR A1 - Bartelmess, Juergen A1 - Zimmek, David A1 - Bartolmai, Matthias A1 - Strangfeld, Christoph A1 - Schäferling, Michael T1 - Fibre optic ratiometric fluorescence pH sensor for monitoring corrosion in concrete JF - Analyst N2 - In this communication a novel concept for pH sensing is introduced which is specifically adapted to monitor carbonation induced corrosion in concrete structures. The method is based on a ratiometric measurement principle, exploiting the pH sensitive colour switching of thymol blue in the basic pH regime and the emissive properties of two different (Zn)CdSe/ZnS core shell quantum dots. The transition point of thymol blue in a Hydrogel D4 matrix was determined to be at around pH 11.6, which fits ideally to the intended application. Next to the fundamental spectroscopic characterization of the ratiometric response, a new design for a sensor head, suitable for the incorporation into concrete matrices is presented. Toward this, a manufacturing process was developed which includes the preparation of a double layer of polymers containing either thymol blue or a quantum dot mixture inside a porous ceramic tube. Results of a proof-of-priciple performance test of the sensor head in solutions of different pH and in cement specimens are presented, with encouraging results paving the way for future field tests in concrete. Y1 - 2020 U6 - http://dx.doi.org/10.1039/C9AN02348H VL - 2020 IS - 145 SP - 2111 EP - 2117 ER - TY - JOUR A1 - Sun, Chunning A1 - Resch-Genger, Ute A1 - Schäferling, Michael A1 - Gradzielski, Michael T1 - Solvothermal Synthesis of Lanthanide‐doped NaYF 4 Upconversion Crystals with Size and Shape Control: Particle Properties and Growth Mechanism JF - ChemNanoMat N2 - Lanthanide-doped NaYF4 upconversion nano- and microcrystals were synthesized via a facile solvothermal approach. Thereby, the influence of volume ratios of ethylene glycol (EG)/H2O, molar ratios of NH4F/RE3+ (RE3+ represents the total amount of Y3+ and rare-earth dopant ions), Gd3+ ion contents, types of activator dopant ions, and different organic co-solvents on the crystal phase, size, and morphology of the resulting particles were studied systematically. A possible formation mechanism for the growth of crystals of different morphology is discussed. Our results show that the transition from the α- to the β-phase mainly depends on the volume ratio of EG/H2O and the molar ratio of NH4F/RE3+, while the morphology and size could be controlled by the type of organic co-solvent and Gd3+ dopant ions. Furthermore, the reaction time has to be long enough to convert α-NaYF4 into β-NaYF4 during the growth process to optimize the upconversion luminescence. The formation of larger β-NaYF4 crystals, which possess a higher upconversion luminescence than smaller particles, proceeds via intermediates of smaller crystals of cubic structure. In summary, our synthetic approach presents a facile route to tailor the size, crystal phase, morphology, and luminescence features of upconversion materials. Y1 - 2020 U6 - http://dx.doi.org/10.1002/cnma.202000564 VL - 2020 IS - 7 SP - 174 EP - 183 ER - TY - JOUR A1 - Kreutzer, Susanne A1 - Nolte, Karen T1 - Editorial: Bads in Nursing Ethics, History and Historiography JF - European Journal for Nursing History and Ethics Y1 - 2020 U6 - http://dx.doi.org/10.25974/enhe2020-1en VL - 2 IS - 2020 ER -