TY  - CHAP
A1  - Rosin, Julia
A1  - Butenweg, Christoph
A1  - Boesen, Niklas
A1  - Gellert, Christoph
T1  - Evaluation of the Seismic Behavior of a Modern URM Building During the 2012 Northern Italy Earthquakes
T2  - 16th European Conference on Earthquake Engineering, Thessaloniki, 18-21 June, 2018
Y1  - 2018
SP  - 1
EP  - 12
ER  - 
TY  - CHAP
A1  - Rosin, Julia
A1  - Butenweg, Christoph
T1  - Seismic isolation of cylindrical liquid storage tanks
T2  - Proceedings of the 9th European Conference on Structural Dynamics, EURODYN 2014 Porto, Portugal, 30 June - 2 July 2014 / A. Cunha, E. Caetano, .... (eds.)
Y1  - 2014
SN  - 978-972-752-165-4
SP  - 3145
EP  - 3152
CY  - Porto
ER  - 
TY  - CHAP
A1  - Rosin, J.
A1  - Mykoniou, K.
A1  - Butenweg, Christoph
T1  - Analysis Of Base Isolated Liquid Storage Tanks With 3D Fsi-Analysis As Well As Simplified Approaches
T2  - 16th World Conference on Earthquake Engineering, 16WCEE 2017 Santiago Chile, January 9th to 13th 2017
N2  - Tanks are preferably designed, for cost-saving reasons, as circular, cylindrical, thin-walled shells. In case of seismic excitation, these constructions are highly vulnerable to stability failures. An earthquake-resistant design of rigidly supported tanks for high seismic loading demands, however, uneconomic wall thicknesses. A cost-effective alternative can be provided by base isolation systems. In this paper, a simplified seismic design procedure for base isolated tanks is introduced, by appropriately modifying the standard mechanical model for flexible, rigidly supported tanks. The non-linear behavior of conventional base isolation systems becomes an integral part of a proposed simplified process, which enables
the assessment of the reduced hydrodynamic forces acting on the tank walls and the corresponding stress distribution. The impulsive and convective actions of the liquid are taken into account. The validity of this approach is evaluated by
employing a non-linear fluid-structure interaction algorithm of finite element method. Special focus is placed on the boundary conditions imposed from the base isolation and the resulting hydrodynamic pressures. Both horizontal and vertical
component of ground motion are considered in order to study the principal effects of the base isolation on the pressure distribution of the tank walls. The induced rocking effects associated with elastomeric bearings are discussed. The results
manifest that base isolated tanks can be designed for seismic loads by means of the proposed procedure with sufficient accuracy, allowing to dispense with numerically expensive techniques.
KW  - liquid storage tank
KW  - seismic isolation
KW  - elastomeric bearing
KW  - friction pendulum bearing
KW  - simplified approach
Y1  - 2017
N1  - Paper No 2246
SP  - 1
EP  - 14
PB  - Chilean Association on Seismology and Earthquake Engineering (ACHISINA)
ER  - 
TY  - JOUR
A1  - Rosenauer, A.
A1  - Oberst, W.
A1  - Litvinov, D.
A1  - Gerthsen, D.
A1  - Förster, Arnold
A1  - Schmidt, R.
T1  - Structural and Chemical Investigation of In-0.6Ga0.4As Stranski-Krastanow Layers Burried in GaAs by Transmission Electron Microscopy
JF  - Physical Review B. 61 (2000), H. 12
Y1  - 2000
SN  - 1095-3795
SP  - 8276
EP  - 8288
ER  - 
TY  - CHAP
A1  - Rosemann, Michael
A1  - Eggert, Mathias
A1  - Voigt, Matthias
A1  - Beverungen, Daniel
T1  - Leveraging Social Network Data for Analytical CRM Strategies - The Introduction of Social BI.
T2  - ECIS 2012 Proceedings
Y1  - 2012
N1  - European Conference on Information Systems
(ECIS), 2012
ER  - 
TY  - CHAP
A1  - Roosen, Petra
A1  - Feyerl, Günter
T1  - Gender-specific perception and utilization of personal use vehicles
T2  - FISITA World Automotive Congress 2014 : Maastricht, The Netherlands, 2 - 6 June / [organised by the International Federation of Automotive Engineering Societies (FISITA) ...]. Bd. 1
Y1  - 2015
SN  - 978-1-5108-0209-4
SP  - 418
EP  - 425
PB  - Curran
CY  - Red Hook, NY
ER  - 
TY  - JOUR
A1  - Rolka, David
A1  - Poghossian, Arshak
A1  - Schöning, Michael Josef
T1  - Integration of a capacitive EIS sensor into a FIA system for pH and penicillin determination
JF  - Sensors. 4 (2004)
Y1  - 2004
SN  - 1424-8220
SP  - 84
EP  - 94
ER  - 
TY  - CHAP
A1  - Rokitansky, Carl-Herbert
A1  - Ehammer, Max
A1  - Gräupl, Thomas
A1  - Schnell, Michael
A1  - Brandes, Sinja
A1  - Gligorevic, Snjezana
A1  - Rihacek, Christoph
A1  - Sajatovic, Miodrag
T1  - B-AMC a system for future broadband aeronautical multi-carrier communications in the L-BAND
T2  - IEEE/AIAA 26th Digital Avionics Systems Conference ; DASC '07 ; 21 - 25 Oct. 2007, Dallas, Texas
Y1  - 2007
SN  - 978-1-4244-1108-5
SP  - 4D2-1
EP  - 4D2-13
ER  - 
TY  - CHAP
A1  - Rokitansky, Carl-Herbert
A1  - Ehammer, Max
A1  - Gräupl, Thomas
A1  - Schnell, Michael
A1  - Brandes, Sinja
A1  - Gligorevic, Snjezana
A1  - Rihacek, Christoph
A1  - Sajatovic, Miodrag
T1  - B-AMC – Aeronautical Broadband Communication in the L-Band
T2  - First CEAS European Air and Space Conference : Motto: century perspectives : Deutscher Luft-und Raumfahrtkongress 2007 : 10-13 September 2007 in Berlin, Germany. (Jahrbuch der Deutschen Gesellschaft für Luft- und Raumfahrt 2007 ; Bd. 1-5. - Enth.: Jahrbuch der Deutschen Gesellschaft für Luft- und Raumfahrt 2006 ; Bd. 3)
Y1  - 2007
SN  - 0070-4083
SP  - 487
EP  - 496
PB  - Deutschen Gesellschaft für Luft- und Raumfahrt
CY  - Bonn
ER  - 
TY  - JOUR
A1  - Roeth, A.A.
A1  - Slabu, I.
A1  - Kessler, A.
A1  - Engelmann, Ulrich M.
T1  - Local treatment of pancreatic cancer with magnetic nanoparticles
JF  - HPB
Y1  - 2019
U6  - https://doi.org/10.1016/j.hpb.2019.10.959
SN  - 1365-182X
VL  - 21
IS  - Supplement 3
SP  - S868
EP  - S869
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Roesner, Andreas
A1  - Scheik, Sven
A1  - Olowinsky, Alexander
A1  - Gillner, Arnold
A1  - Reisgen, Uwe
A1  - Schleser, Markus
T1  - Laser assisted joining of plastic metal hybrids
JF  - Lasers in manufacturing 2011 : proceedings of the sixth International WLT Conference on Lasers in Manufacturing, Munich, May 23 - 26 2011. (Physics procedia ; Vol. 12 (2011), Part B)
Y1  - 2011
SN  - 1875-3892 (E-Journal); 1875-3884 (Print)
SP  - 370
EP  - 377
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Roesner, Andreas
A1  - Scheik, Sven
A1  - Olowinsky, Alexander
A1  - Gillner, Arnold
A1  - Propawe, Reinhart
A1  - Schleser, Markus
A1  - Reisgen, Uwe
T1  - Innovative approach of joining hybrid components
JF  - Journal of laser applications
Y1  - 2011
SN  - 1042-346X
VL  - Vol. 23
IS  - Iss. 3
SP  - 32007
PB  - Laser Institute of America
CY  - Orlando, Fla.
ER  - 
TY  - JOUR
A1  - Roepke, Rene
A1  - Köhler, Klemens
A1  - Drury, Vincent
A1  - Schroeder, Ulrik
A1  - Wolf, Martin R.
A1  - Meyer, Ulrike
T1  - A pond full of phishing games - analysis of learning games for anti-phishing education
JF  - Model-driven Simulation and Training Environments for Cybersecurity. MSTEC 2020
N2  - Game-based learning is a promising approach to anti-phishing education, as it fosters motivation and can help reduce the perceived difficulty of the educational material. Over the years, several prototypes for game-based applications have been proposed, that follow different approaches in content selection, presentation, and game mechanics. In this paper, a literature and product review of existing learning games is presented. Based on research papers and accessible applications, an in-depth analysis was conducted, encompassing target groups, educational contexts, learning goals based on Bloom’s Revised Taxonomy, and learning content. As a result of this review, we created the publications on games (POG) data set for the domain of anti-phishing education. While there are games that can convey factual and conceptual knowledge, we find that most games are either unavailable, fail to convey procedural knowledge or lack technical depth. Thus, we identify potential areas of improvement for games suitable for end-users in informal learning contexts.
Y1  - 2020
SN  - 978-3-030-62433-0
U6  - https://doi.org/10.1007/978-3-030-62433-0_32020
N1  - Lecture Notes in Computer Science, vol 12512
SP  - 41
EP  - 60
PB  - Springer
CY  - Cham
ER  - 
TY  - JOUR
A1  - Rodrigues, Raul T.
A1  - Morais, Paulo V.
A1  - Nordi, Cristina S. F.
A1  - Schöning, Michael Josef
A1  - Siqueira Jr., José R.
A1  - Caseli, Luciano
T1  - Carbon Nanotubes and Algal Polysaccharides To Enhance the Enzymatic Properties of Urease in Lipid Langmuir-Blodgett Films
JF  - Langmuir
N2  - Algal polysaccharides (extracellular polysaccharides) and carbon nanotubes (CNTs) were adsorbed on dioctadecyldimethylammonium bromide Langmuir monolayers to serve as a matrix for the incorporation of urease. The physicochemical properties of the supramolecular system as a monolayer at the air–water interface were investigated by surface pressure–area isotherms, surface potential–area isotherms, interfacial shear rheology, vibrational spectroscopy, and Brewster angle microscopy. The floating monolayers were transferred to hydrophilic solid supports, quartz, mica, or capacitive electrolyte–insulator–semiconductor (EIS) devices, through the Langmuir–Blodgett (LB) technique, forming mixed films, which were investigated by quartz crystal microbalance, fluorescence spectroscopy, and field emission gun scanning electron microscopy. The enzyme activity was studied with UV–vis spectroscopy, and the feasibility of the thin film as a urea sensor was essayed in an EIS sensor device. The presence of CNT in the enzyme–lipid LB film not only tuned the catalytic activity of urease but also helped to conserve its enzyme activity. Viability as a urease sensor was demonstrated with capacitance–voltage and constant capacitance measurements, exhibiting regular and distinctive output signals over all concentrations used in this work. These results are related to the synergism between the compounds on the active layer, leading to a surface morphology that allowed fast analyte diffusion owing to an adequate molecular accommodation, which also preserved the urease activity. This work demonstrates the feasibility of employing LB films composed of lipids, CNT, algal polysaccharides, and enzymes as EIS devices for biosensing applications.
Y1  - 2018
U6  - https://doi.org/10.1021/acs.langmuir.7b04317
SN  - 1520-5827
VL  - 34
IS  - 9
SP  - 3082
EP  - 3093
PB  - ACS Publications
CY  - Washington, DC
ER  - 
TY  - CHAP
A1  - Rochefort, E. de
A1  - Verver, M.
A1  - Grunendahl, A.
A1  - Mooi, H.
A1  - Butenweg, Christoph
T1  - Detailed modelling of the lumbar spine for investigation of low back pain
T2  - Digital Human Modeling for Design and Engineering Symposium : Iowa City, Iowa June 14-16, 2005. (SAE technical papers series ; 2005-1-2716)
Y1  - 2005
U6  - https://doi.org/10.4271/2005-01-2716
SN  - 0096-736X
SP  - 1
EP  - 11
PB  - SAE International
CY  - Warrendale, Pa.
ER  - 
TY  - JOUR
A1  - Rochefort, E. de
A1  - Verver, M.
A1  - Grunendahl, A.
A1  - Mooi, H.
A1  - Butenweg, Christoph
T1  - Detailed modelling of the lumbar spine for investigations of low back pain
JF  - SAE transactions : papers presented at Society and Section meetings / Society of Automotive Engineers
Y1  - 2005
SN  - 0096-736X
VL  - Volume 114
IS  - Part 7
SP  - 788
EP  - 796
ER  - 
TY  - JOUR
A1  - Robinson, A. E.
A1  - Rönna, Uwe
A1  - Funke, Harald
T1  - Testing of a 10 kW diffusive micro-mix combustor for hydrogen-fuelled micro-scale gas turbines
JF  - International Workshop on Micro and Nanotechnology for Power Generation and Energy Conversion Applications <7, 2007, Freiburg, Breisgau>  ; PowerMEMS ; 7
Y1  - 2007
SP  - 225
EP  - 228
ER  - 
TY  - JOUR
A1  - Robinson, A. E.
A1  - Funke, Harald
A1  - Wagemakers, R.
A1  - Grossen, J.
A1  - Bosschaerts, W.
A1  - Hendrick, P.
T1  - Numerical and Experimental Investigation of a Micromix Combustor for a Hydrogen Fuelled μ-Scale Gas Turbine
JF  - Proceedings of the ASME Turbo Expo 2009 : : presented at the 2009 ASME Turbo Expo, June 8 - 12, 2009, Orlando, Florida, USA / sponsored by the International Gas Turbine Institute
Y1  - 2009
SN  - 9780791848869
N1  - GT2009-60061
SP  - 253
EP  - 262
PB  - ASME
CY  - New York, NY
ER  - 
TY  - JOUR
A1  - Robinson, A. E.
A1  - Funke, Harald
A1  - Hendrick, P.
A1  - Recker, E.
A1  - Peirs, J.
T1  - Development of a hydrogen fuelled 1 kW ultra micro gas turbine with special respect to designing, testing and mapping of the µ-scale combustor
JF  - IEEE International Conference on Sustainable Energy Technologies, 2008 : ICSET 2008 ; Singapore, 24 - 27 Nov. 2008.
Y1  - 2008
SN  - 978-1-4244-1887-9
SP  - 656
EP  - 660
PB  - IEEE
CY  - Piscataway, NJ
ER  - 
TY  - JOUR
A1  - Robinson, A. E.
A1  - Funke, Harald
A1  - Hendrick, P.
T1  - Design and Testing of a Micromix Combustor With Recuperative Wall Cooling for a Hydrogen Fueled µ-Scale Gas Turbine
JF  - Journal of engineering for gas turbines and power
Y1  - 2011
SN  - 1528-8919
VL  - 133
IS  - 8
PB  - ASME
CY  - New York
ER  - 
TY  - JOUR
A1  - Ritz, Thomas
A1  - Stender, Michael
T1  - Modeling of B2B mobile commerce processes
JF  - International Journal of Production Economics
Y1  - 2006
U6  - https://doi.org/10.1016/j.ijpe.2005.05.017
SN  - 0925-5273
VL  - 101
IS  - 1
SP  - 128
EP  - 139
ER  - 
TY  - CHAP
A1  - Ritz, Thomas
A1  - Izquierdo Tello, César
A1  - Damm, Sebastian
T1  - Connecting a pedelec to the cloud as basis for gamification in multi modal mobility planning
T2  - MobileCloud 2014 : 2nd IEEE International Conference on Mobile Cloud Computing, Services, and Engineering Oxford, United Kingdom 7-10 April 2014
Y1  - 2014
SN  - 978-1-4799-2504-9
U6  - https://doi.org/10.1109/MobileCloud.2014.25
SP  - 101
EP  - 108
PB  - IEEE Service Center
CY  - Piscataway, NJ
ER  - 
TY  - BOOK
A1  - Ritz, Thomas
A1  - Benz, Axel
A1  - Stender, Michael
T1  - Marktstudie mobile CRM-Systeme
Y1  - 2003
SN  - 3-8167-6361-8
PB  - Fraunhofer-IRB-Verl.
CY  - Stuttgart
ER  - 
TY  - JOUR
A1  - Ritz, Thomas
T1  - Information Channels
JF  - Information Technology. Nr. 52 (2000), H. 08. Mai 2000
Y1  - 2000
SP  - 15
EP  - 15
ER  - 
TY  - JOUR
A1  - Ritz, Thomas
T1  - Modelling Production of personalized information services and their delivery on multiple distribution channels
JF  - Personalization Techniques in Electronic Publishing on the Web. Workshop in the Framework of the 2nd international conference on Adaptive Hypermedia and adaptive web based systems (AH2002) in Malaga (ES)
Y1  - 2002
N1  - AH <2, 2002, Málaga>
SP  - 19
EP  - 30
ER  - 
TY  - CHAP
A1  - Ritz, Thomas
T1  - Production and distribution of personalized information services employing mass customization
T2  - 2nd Interdisciplinary World Congress on Mass Customization and Personalization : MCPC'03, October 6 - 8, 2003, Technische Universität München, Munic, Germany
Y1  - 2003
SP  - Part IV
PB  - Techn. Univ. (TUM)
CY  - München
ET  - CD-Ausg.
ER  - 
TY  - JOUR
A1  - Ritz, Thomas
T1  - Modelling mass customization of digital news services
JF  - International journal of e-business strategy management
Y1  - 2002
VL  - 3
IS  - 3
ER  - 
TY  - JOUR
A1  - Ritz, Thomas
T1  - Personalized information services : an electronic information commodity and its production
JF  - International Journal of E-Business Strategy Management
Y1  - 2000
SN  - 1467-0305
VL  - 2
IS  - 2
ER  - 
TY  - CHAP
A1  - Ritz, Thomas
T1  - Personalized information services : an electronic information commodity and its production
T2  - Electronic publishing '01 : 2001 in the digital publishing odyssey ; proceedings of an ICCC/IFIP conference held at the University of Kent at Canterbury, Kent, United Kingdom, 5 - 7 July, 2001 ; [proceedings of the Fifth Conference on Electronic Publishing]
Y1  - 2001
SN  - 1-58603-191-0
SP  - 48
EP  - 58
PB  - IOS Press [u.a.]
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Ritz, Thomas
T1  - Mass Customized Production of Information Services - The combination of economies-of-scale with economies-of-scope
JF  - Media firms : structures, operations, and performance ; [World Media Economics Conference, 5th : 2002 : Turku, Finland] / ed. by Robert G. Picard
Y1  - 2002
SN  - 0-8058-4165-2
N1  - World Media Economics Conference (5, 2002, Turku)
PB  - Erlbaum
CY  - Mahwah, NJ [u.a.]
ER  - 
TY  - CHAP
A1  - Ritz, Thomas
T1  - DISMED - an innovation portal for printing and media industry
T2  - CRIS 2000 : the fifth conference on Current Research Information Systems in Europe, in Helsinki (Finland), 25-27 May 2000
Y1  - 2001
N1  - Programmpunkt: Cybercafé.
PB  - CORDIS Archive
CY  - [s.l.]
ER  - 
TY  - JOUR
A1  - Ritz, Thomas
T1  - Personalized Information Services: Production and Distribution of these Services employing Mass-Customization
Y1  - 2002
N1  - International Congress on Mass Media and Communications in the e-society of the 21st Century, Moskau, 17.-19.10.2002
ER  - 
TY  - JOUR
A1  - Rittweger, Jörn
A1  - Albracht, Kirsten
A1  - Flück, Martin
A1  - Ruoss, Severin
A1  - Brocca, Lorenza
A1  - Longa, Emanuela
A1  - Moriggi, Manuela
A1  - Seynnes, Olivier
A1  - Di Giulio, Irene
A1  - Tenori, Leonardo
A1  - Vignoli, Alessia
A1  - Capri, Miriam
A1  - Gelfi, Cecilia
A1  - Luchinat, Claudio
A1  - Franceschi, Claudio
A1  - Bottinelli, Roberto
A1  - Cerretelli, Paolo
A1  - Narici, Marco
T1  - Sarcolab pilot study into skeletal muscle’s adaptation to longterm spaceflight
JF  - npj Microgravity
Y1  - 2018
U6  - https://doi.org/10.1038/s41526-018-0052-1
SN  - 2373-8065
VL  - 4
IS  - 1
SP  - 1
EP  - 9
PB  - Nature Portfolio
ER  - 
TY  - CHAP
A1  - Ritschel, Konstantin
A1  - Stenzel, Adina
A1  - Czarnecki, Christian
A1  - Hong, Chin-Gi
ED  - Gesellschaft für Informatik e.V. (GI), 
T1  - Realizing robotic process automation potentials: an architectural perspective on a real-life implementation case
T2  - GI Edition Proceedings Band 314 "INFORMATIK 2021" Computer Science & Sustainability
N2  - The initial idea of Robotic Process Automation (RPA) is the automation of business processes through a simple emulation of user input and output by software robots. Hence, it can be assumed that no changes of the used software systems and existing Enterprise Architecture (EA) is
required. In this short, practical paper we discuss this assumption based on a real-life implementation project. We show that a successful RPA implementation might require architectural work during analysis, implementation, and migration. As practical paper we focus on exemplary lessons-learned and new questions related to RPA and EA.
KW  - Robotic Process Automation
KW  - Enterprise Architecture
KW  - Implementation Case
Y1  - 2021
SN  - 9783885797081
U6  - https://doi.org/10.18420/informatik2021-108
SN  - 1617-5468
N1  - INFORMATIK 2021 – 51. Jahrestagung der Gesellschaft für Informatik, 27. September – 01. Oktober 2021 / Virtuell
SP  - 1303
EP  - 1311
PB  - Köllen
CY  - Bonn
ER  - 
TY  - CHAP
A1  - Rings, René
A1  - Ludowicy, Jonas
A1  - Finger, Felix
A1  - Braun, Carsten
A1  - Bil, Cees
T1  - Sensitivity Analysis of General Aviation Aircraft with Parallel Hybrid-Electric Propulsion Systems
T2  - Asia Pacific International Symposium on Aerospace Technology. APISAT 2019
Y1  - 2019
ER  - 
TY  - INPR
A1  - Ringers, Christa
A1  - Bialonski, Stephan
A1  - Solovev, Anton
A1  - Hansen, Jan N.
A1  - Ege, Mert
A1  - Friedrich, Benjamin M.
A1  - Jurisch-Yaksi, Nathalie
T1  - Preprint: Local synchronization of cilia and tissue-scale cilia alignment are sufficient for global metachronal waves
T2  - bioRxiv
N2  - Motile cilia are hair-like cell extensions present in multiple organs of the body. How cilia coordinate their regular beat in multiciliated epithelia to move fluids remains insufficiently understood, particularly due to lack of rigorous quantification. We combine here experiments, novel analysis tools, and theory to address this knowledge gap. We investigate collective dynamics of cilia in the zebrafish nose, due to its conserved properties with other ciliated tissues and its superior accessibility for non-invasive imaging. We revealed that cilia are synchronized only locally and that the size of local synchronization domains increases with the viscosity of the surrounding medium. Despite the fact that synchronization is local only, we observed global patterns of traveling metachronal waves across the multiciliated epithelium. Intriguingly, these global wave direction patterns are conserved across individual fish, but different for left and right nose, unveiling a chiral asymmetry of metachronal coordination. To understand the implications of synchronization for fluid pumping, we used a computational model of a regular array of cilia. We found that local metachronal synchronization prevents steric collisions and improves fluid pumping in dense cilia carpets, but hardly affects the direction of fluid flow. In conclusion, we show that local synchronization together with tissue-scale cilia alignment are sufficient to generate metachronal wave patterns in multiciliated epithelia, which enhance their physiological function of fluid pumping.
Y1  - 2021
U6  - https://doi.org/10.1101/2021.11.23.469646
N1  - Veröffentlicht in eLife 12:e77701 (https://doi.org/10.7554/eLife.77701).
ER  - 
TY  - JOUR
A1  - Ringers, Christa
A1  - Bialonski, Stephan
A1  - Ege, Mert
A1  - Solovev, Anton
A1  - Hansen, Jan Niklas
A1  - Jeong, Inyoung
A1  - Friedrich, Benjamin M.
A1  - Jurisch-Yaksi, Nathalie
T1  - Novel analytical tools reveal that local synchronization of cilia coincides with tissue-scale metachronal waves in zebrafish multiciliated epithelia
JF  - eLife
N2  - Motile cilia are hair-like cell extensions that beat periodically to generate fluid flow along various epithelial tissues within the body. In dense multiciliated carpets, cilia were shown to exhibit a remarkable coordination of their beat in the form of traveling metachronal waves, a phenomenon which supposedly enhances fluid transport. Yet, how cilia coordinate their regular beat in multiciliated epithelia to move fluids remains insufficiently understood, particularly due to lack of rigorous quantification. We combine experiments, novel analysis tools, and theory to address this knowledge gap. To investigate collective dynamics of cilia, we studied zebrafish multiciliated epithelia in the nose and the brain. We focused mainly on the zebrafish nose, due to its conserved properties with other ciliated tissues and its superior accessibility for non-invasive imaging. We revealed that cilia are synchronized only locally and that the size of local synchronization domains increases with the viscosity of the surrounding medium. Even though synchronization is local only, we observed global patterns of traveling metachronal waves across the zebrafish multiciliated epithelium. Intriguingly, these global wave direction patterns are conserved across individual fish, but different for left and right noses, unveiling a chiral asymmetry of metachronal coordination. To understand the implications of synchronization for fluid pumping, we used a computational model of a regular array of cilia. We found that local metachronal synchronization prevents steric collisions, i.e., cilia colliding with each other, and improves fluid pumping in dense cilia carpets, but hardly affects the direction of fluid flow. In conclusion, we show that local synchronization together with tissue-scale cilia alignment coincide and generate metachronal wave patterns in multiciliated epithelia, which enhance their physiological function of fluid pumping.
Y1  - 2023
U6  - https://doi.org/10.7554/eLife.77701
SN  - 2050-084X
VL  - 12
PB  - eLife Sciences Publications
ER  - 
TY  - CHAP
A1  - Ringbeck, Thorsten
A1  - Schwarte, Rudolf
A1  - Buxbaum, Bernd
A1  - Hess, Rudolf
ED  - Tang, Suning
T1  - Optical GMSK modem for infrared wireless communication based on a new receiver principle in CMOS technology
T2  - Optoelectronic interconnects VIII : 25 - 26 January 2001, San Jose, USA. - (Proceedings of SPIE ; 4292)
Y1  - 2001
SN  - 0-8194-3970-3
SN  - 0038-7355
SN  - 0361-0748
SN  - 0277-786X
N1  - Optoelectronic Interconnects <8, 2001, San Jose, Calif.>
SP  - 25
EP  - 34
PB  - SPIE
CY  - Bellingham, Wash.
ER  - 
TY  - CHAP
A1  - Ringbeck, Thorsten
A1  - Schwarte, Rudolf
A1  - Buxbaum, Bernd
ED  - Korevaar, Eric John
T1  - Introduction of a new opto-electrical phase-locked loop in CMOS technology: the PMD-PLL
T2  - Optical wireless communications II / [SPIE Conference on Optical Wireless Communications II], 22 September 1999, Boston, Massachusetts. - (SPIE proceedings series ; 3850)
Y1  - 1999
SN  - 0-8194-3443-4
SN  - 0038-7355
SN  - 0361-0748
SN  - 0277-786X
N1  - Conference on Optical Wireless Communications <2, 1999, Boston, Mass.
SP  - 108
EP  - 116
PB  - SPIE
CY  - Bellingham, Wash.
ER  - 
TY  - CHAP
A1  - Ringbeck, Thorsten
A1  - Hagebeuker, Bianca
ED  - Grün, Armin
T1  - A 3D time of flight camera of object detection
T2  - Optical 3-D measurement techniques VIII : applications in GIS, mapping, manufacturing, quality control, robotics, navigation, mobile mapping, medical imaging, cultural heritage, VR generation and animation; papers presented to the conference organized at ETH Zurich, Switzerland, July 9 - 12, 2007. - Vol. 1
Y1  - 2007
SN  - 3-906467-67-8 (Gesamtwerk)
N1  - Conference on Optical 3-D Measurement Techniques <8, 2007, Zürich>
SP  - 1
EP  - 16
PB  - ETH
CY  - Zürich
ER  - 
TY  - CHAP
A1  - Ringbeck, Thorsten
A1  - Buxbaum, Bernd
T1  - A highly integrated monolithic electro-optical PLL in CMOS-technology (PMD-PLL) for communication and ranging systems
T2  - Proceedings / OPTO 2000, 4th International Conference and Exhibition on Optoelectronics, Optical Sensors and Measuring Techniques : May 9 - 11, 2000, Erfurt Fair, Conference Centre
Y1  - 2000
N1  - International Congress and Exhibition on Optoelectronics, Optical Sensors and Measuring Techniques <4, 2000, Erfurt> ; OPTO <4, 2000, Erfurt>
SP  - 235
EP  - 239
PB  - AMA Service GmbH
CY  - Wunsdorf
ER  - 
TY  - CHAP
A1  - Ringbeck, Thorsten
A1  - Albrecht, M.
A1  - Frey, J.
ED  - Lerch, Reinhard
T1  - Time-of-Flight 3D-camera for autonomous navigation and industrial automation
T2  - Proceedings : 11th international conference, 13 - 15 May 2003, Exhibition Centre Nuremberg, Germany ; an event of the Association for Sensor Technology, AMA
Y1  - 2003
N1  - Internationale Messe mit Kongress Sensor <Nürnberg>
PB  - AMA Service
CY  - Wunstorf/Germany
ET  - CD-ROM-Ausg.
ER  - 
TY  - JOUR
A1  - Rigling, Andreas
A1  - Eilmann, Britta
A1  - Koechli, Roger
A1  - Dobbertin, Matthias
T1  - Mistletoe-induced crown degradation in Scots pine in a xeric environment
N2  - Increasing Scots pine (Pinus sylvestris L.) mortality has been recently observed in the dry inner valleys of the European Alps. Besides drought, infection with pine mistletoe (Viscum album ssp. austriacum) seems to play an important role in the mortality dynamics of Scots pines, but how mistletoes promote pine decline remains unclear. To verify whether pine mistletoe infection weakens the host via crown degradation, as observed for dwarf mistletoes, we studied the negative effects of pine mistletoe infestation on the photosynthetic tissues and branch growth of pairs of infested and non-infested branches. Pine mistletoe infection leads to crown degradation in its host by reducing the length, the radial increment, the ramification, the needle length and the number of needle years of the infested branches. This massive loss in photosynthetic tissue results in a reduction in primary production and a subsequent decrease in carbohydrate availability. The significant reduction in needle length due to mistletoe infection is an indication for a lower water and nutrient availability in infested branches. Thus, mistletoe infection might lead to a decrease in the availability of water and carbohydrates, the two most important growth factors, which are already shortened due to the chronic drought situation in the area. Therefore, pine mistletoe increases the risk of drought-induced mortality of its host when growing in a xeric environment.
Y1  - 2010
U6  - https://doi.org/10.1093/treephys/tpq038
SN  - 1758-4469  (Online)
SN  - 0829-318X (Print)
VL  - 30
IS  - 7
SP  - 845
EP  - 832
PB  - Oxford University Press
CY  - Oxford
ER  - 
TY  - JOUR
A1  - Rigling, Andreas
A1  - Bigler, Christof
A1  - Eilmann, Britta
A1  - Feldmeyer-Christe, Elisabeth
A1  - Gimmi, Urs
A1  - Ginzler, Christian
A1  - Graf, Ulrich
A1  - Mayer, Phillip
A1  - Vacchiano, Giorgio
A1  - Weber, Pascal
A1  - Wohlgemuth, Thomas
A1  - zweifel, Roman
A1  - Dobbertin, Matthias
T1  - Driving factors of a vegetation shift from Scots pine to pubescent oak in dry Alpine forests
JF  - Global Change Biology
N2  - An increasing number of studies have reported on forest declines and vegetation shifts triggered by drought. In the Swiss Rhone valley (Valais), one of the driest inner-Alpine regions, the species composition in low elevation forests is changing: The sub-boreal Scots pine (Pinus sylvestris L.) dominating the dry forests is showing high mortality rates. Concurrently the sub-Mediterranean pubescent oak (Quercus pubescens Willd.) has locally increased in abundance. However, it remains unclear whether this local change in species composition is part of a larger-scale vegetation shift. To study variability in mortality and regeneration in these dry forests we analysed data from the Swiss national forest inventory (NFI) on a regular grid between 1983 and 2003, and combined it with annual mortality data from a monitoring site. Pine mortality was found to be highest at low elevation (below 1000 m a.s.l.). Annual variation in pine mortality was correlated with a drought index computed for the summer months prior to observed tree death. A generalized linear mixed-effects model indicated for the NFI data increased pine mortality on dryer sites with high stand competition, particularly for small-diameter trees. Pine regeneration was low in comparison to its occurrence in the overstorey, whereas oak regeneration was comparably abundant. Although both species regenerated well at dry sites, pine regeneration was favoured at cooler sites at higher altitude and oak regeneration was more frequent at warmer sites, indicating a higher adaptation potential of oaks under future warming. Our results thus suggest that an extended shift in species composition is actually occurring in the pine forests in the Valais. The main driving factors are found to be climatic variability, particularly drought, and variability in stand structure and topography. Thus, pine forests at low elevations are developing into oak forests with unknown consequences for these ecosystems and their goods and services.
Y1  - 2012
U6  - https://doi.org/10.1111/gcb.12038
SN  - 1354-1013 (Print)
SN  - 1365-2486 (Online)
VL  - 19
IS  - 1
SP  - 229
EP  - 240
PB  - Wiley-Blackwell
CY  - Oxford
ER  - 
TY  - CHAP
A1  - Riga, Evi
A1  - Pitilakis, Kyriazis
A1  - Butenweg, Christoph
A1  - Apostolaki, Stefania
A1  - Karatzetzou, Anna
ED  - Arion, Cristian
ED  - Scupin, Alexandra
ED  - Ţigănescu, Alexandru
T1  - Investigating the impact of the new European Seismic Hazard Model ESHM20 on the seismic design and safety control of industrial facilities
T2  - The Third European Conference on Earthquake Engineering and Seismology
N2  - The seismic performance and safety of major European industrial facilities has a global interest for Europe, its citizens and economy. A potential major disaster at an industrial site could affect several countries, probably far beyond the country where it is located. However, the seismic design and safety assessment of these facilities is practically based on national, often outdated seismic hazard assessment studies, due to many reasons, including the absence of a reliable, commonly developed seismic hazard model for whole Europe. This important gap is no more existing, as the 2020 European Seismic Hazard Model ESHM20 was released in December 2021. In this paper we investigate the expected impact of the adoption of ESHM20 on the seismic demand for industrial facilities, through the comparison of the ESHM20 probabilistic hazard at the sites where industrial facilities are located with the respective national and European regulations. The goal of this preliminary work in the framework of Working Group 13 of the European Association for Earthquake Engineering (EAEE), is to identify potential inadequacies in the design and safety control of existing industrial facilities and to highlight the expected impact of the adoption of the new European Seismic Hazard Model on the design of new industrial facilities and the safety assessment of existing ones.
KW  - ESHM20, industrial facilities
KW  - seismic hazard
KW  - seismic design
KW  - safety control
Y1  - 2022
SN  - 978-973-100-533-1
N1  - 3ECEES - Third European Conference on Earthquake Engineering and Seismology, September 4 – September 9, 2022, Bucharest
SP  - 3261
EP  - 3270
ER  - 
TY  - JOUR
A1  - Rietsch, Stefan H. G.
A1  - Pfaffenrot, Viktor
A1  - Bitz, Andreas
A1  - Orzada, Stephan
A1  - Brunheim, Sascha
A1  - Lazik-Palm, Andrea
A1  - Theysohn, Jens M.
A1  - Ladd, Mark E.
A1  - Quick, Harald H.
A1  - Kraff, Oliver
T1  - An 8-channel transceiver 7-channel receive RF coil setup for high SNR ultrahigh-field MRI of the shoulder at 7T
JF  - Medical Physics
Y1  - 2017
U6  - https://doi.org/10.1002/mp.12612
SN  - 0094-2405
IS  - Article in press
PB  - Wiley
CY  - Hoboken
ER  - 
TY  - JOUR
A1  - Rietsch, Stefan H. G.
A1  - Brunheim, Sascha
A1  - Orzada, Stephan
A1  - Voelker, Maximilian N.
A1  - Maderwald, Stefan
A1  - Bitz, Andreas
A1  - Gratz, Marcel
A1  - Ladd, Mark E.
A1  - Quick, Harald H.
T1  - Development and evaluation of a 16-channel receive-only RF coil to improve 7T ultra-high field body MRI with focus on the spine
JF  - Magnetic Resonance in Medicine
Y1  - 2019
U6  - https://doi.org/10.1002/mrm.27731
SN  - 1522-2594
IS  - Early view
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Rieper, Harald
A1  - Gebhardt, Andreas
A1  - Stucker, Brent
T1  - Selective Laser Melting of the Eutectic Silver-Copper Alloy Ag 28 wt % Cu
JF  - RTejournal - Forum für Rapid Technologie
N2  - The aim of this work was to perform a detailed investigation of the use of Selective Laser Melting (SLM) technology to process eutectic silver-copper alloy Ag 28 wt. % Cu (also called AgCu28). The processing occurred with a Realizer SLM 50 desktop machine. The powder analysis (SEM-topography, EDX, particle distribution) was reported as well as the absorption rates for the near-infrared (NIR) spectrum. Microscope imaging showed the surface topography of the manufactured parts. Furthermore, microsections were conducted for the analysis of porosity. The Design of Experiments approach used the response surface method in order to model the statistical relationship between laser power, spot distance and pulse time.
KW  - SLM
KW  - Response Surface Method
KW  - Porositat
KW  - Eutectic Silver Copper alloy
KW  - Additive Manufacturing
Y1  - 2016
U6  - http://nbn-resolving.de/urn/resolver.pl?nbn:de:0009-2-44141
SN  - 1614-0923
VL  - 13
ER  - 
TY  - CHAP
A1  - Rieper, Harald
A1  - Gebhardt, Andreas
A1  - Stucker, Brent
T1  - Process parameters for Selective Laser Melting of AgCu7
T2  - DDMC, Fraunhofer Direct Digital Manufacturing Conference, 3
Y1  - 2016
SN  - 978-3-8396-1001-5
N1  - DDMC, 2016, Fraunhofer Direct Digital Manufacturing Conference, 3rd, Berlin, DE, 2016-03-16 - 2016-03-17
SP  - 171
EP  - 176
PB  - Fraunhofer-Verlag
CY  - Stuttgart
ER  - 
TY  - JOUR
A1  - Riemer, A.
A1  - Schroth, P.
A1  - Schütz, S.
A1  - Hummel, Hans E.
A1  - Lüth, H.
A1  - Kohl, C.-D.
A1  - Schöning, Michael Josef
T1  - The future of fire detection: Biological sensors? – Die Zukunft der Brandgassensorik: Biologische Sensoren?
JF  - Gassensorik in der Brandmeldetechnik : [VdS-Fachtagung, am 15. und 16. November 2000 in Köln] = Gas sensors for fire detection / VdS Schadenverhütung
Y1  - 2000
N1  - Fachtagung Gassensorik in der Brandmeldetechnik ; (2000, Köln)
SP  - 1
EP  - 7
PB  - VdS Schadenverhütung
CY  - Köln
ER  -