@inproceedings{OwetschkinMeyerGeigeretal.2013, author = {Owetschkin, Konstantin and Meyer, Laurid and Geiger, Christian and Drochtert, Daniel}, title = {Mobile virtual archery}, series = {SIGGRAPH Asia 2013 Symposium on Mobile Graphics and Interactive Applications on - SA '13, 19.11.2013 - 22.11.2013, Hong Kong}, booktitle = {SIGGRAPH Asia 2013 Symposium on Mobile Graphics and Interactive Applications on - SA '13, 19.11.2013 - 22.11.2013, Hong Kong}, editor = {Billinghurst, Mark and Karlsson, B{\"o}rje}, publisher = {ACM Press}, address = {New York}, isbn = {9781450326339}, doi = {10.1145/2543651.2543684}, pages = {1}, year = {2013}, language = {en} } @inproceedings{GroteRammSchoenigSchwarzboezletal.2024, author = {Grote-Ramm, Wolfgang and Sch{\"o}nig, Felix and Schwarzb{\"o}zl, Peter and Drexelius, Maximilian and Maldonado Quinto, Daniel and Binder, Matthias}, title = {Model Predictive Control and Service Life Monitoring for Molten Salt Solar Power Towers}, series = {29th SolarPACES Conference, Sydney}, booktitle = {29th SolarPACES Conference, Sydney}, publisher = {SolarPACES}, doi = {10.52825/solarpaces.v2i.774}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-43233}, year = {2024}, abstract = {A two-component system for control and monitoring of solar power towers with molten salt receivers is proposed. The control component consists of a model predictive control applica-tion (MPC) with a flexible objective function and on-line tunable weights, which runs on a In-dustrial PC and uses a reduced order dynamic model of the receiver's thermal and flow dy-namics. The second component consists of a service-life monitoring unit, which estimates the service-life consumption of the absorber tubes depending on the current mode of operation based on thermal stresses and creep fatigue in the high temperature regime. The calculation of stresses is done based on a detailed finite element study, in which a digital twin of the re-ceiver was developed. By parallelising the model solver, the estimation of service-life con-sumption became capable of real-time operation. The system has been implemented at a test facility in J{\"u}lich, Germany, and awaits field experiments. In this paper, the modeling and archi-tecture are presented along simulation results, which were validated on a hardware-in-the-loop test bench. The MPC showed good disturbance rejection while respecting process variable constraints during the simulation studies.}, language = {en} } @inproceedings{GroteRammSchoenig2022, author = {Grote-Ramm, Wolfgang and Sch{\"o}nig, Felix}, title = {Model Predictive Control of Solar Receivers}, series = {25th Cologne Solar Colloquium (DLR)}, booktitle = {25th Cologne Solar Colloquium (DLR)}, publisher = {DLR Institut f{\"u}r Solarforschung}, pages = {17}, year = {2022}, language = {en} } @article{MierMoellenbruckJostetal.2015, author = {Mier, Dominik and M{\"o}llenbruck, Florian and Jost, Michael and Grote, Wolfgang and M{\"o}nnigmann, Martin}, title = {Model predictive control of the steam cycle in a solar power plant}, series = {IFAC-PapersOnLine}, volume = {48}, journal = {IFAC-PapersOnLine}, number = {8}, publisher = {Elsevier}, issn = {2405-8963}, doi = {10.1016/j.ifacol.2015.09.052}, pages = {710 -- 715}, year = {2015}, abstract = {We derive a nonlinear model of the steam cycle of a solar power plant, estimate its unknown parameters with measured data, and design a linear model predictive controller based on the resulting model. Simulations show that the linear model predictive controller is able to regulate the electrical power of the nonlinear steam process of the plant to a given reference trajectory very well. Moreover, it results in very good disturbance rejection.}, language = {en} } @article{FuHeeminkLuetal.2016, author = {Fu, Guangliang and Heemink, Arnold and Lu, Sha and Segers, Arjo and Weber, Konradin and Lin, Hai-Xiang}, title = {Model-based aviation advice on distal volcanic ash clouds byassimilating aircraft in situ measurements}, series = {Atmospheric Chemistry and Physics}, volume = {16}, journal = {Atmospheric Chemistry and Physics}, number = {14}, publisher = {Copernicus}, issn = {1680-7324}, doi = {10.5194/acp-16-9189-2016}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-50058}, pages = {9189 -- 9200}, year = {2016}, abstract = {Abstract. The forecast accuracy of distal volcanic ash clouds is important for providing valid aviation advice during volcanic ash eruption. However, because the distal part of volcanic ash plume is far from the volcano, the influence of eruption information on this part becomes rather indirect and uncertain, resulting in inaccurate volcanic ash forecasts in these distal areas. In our approach, we use real-life aircraft in situ observations, measured in the northwestern part of Germany during the 2010 Eyjafjallaj{\"o}kull eruption, in an ensemble-based data assimilation system combined with a volcanic ash transport model to investigate the potential improvement on the forecast accuracy with regard to the distal volcanic ash plume. We show that the error of the analyzed volcanic ash state can be significantly reduced through assimilating real-life in situ measurements. After a continuous assimilation, it is shown that the aviation advice for Germany, the Netherlands and Luxembourg can be significantly improved. We suggest that with suitable aircrafts measuring once per day across the distal volcanic ash plume, the description and prediction of volcanic ash clouds in these areas can be greatly improved.}, language = {en} } @inproceedings{DiprasetyaPullaniSchwungetal.2024, author = {Diprasetya, Mochammad Rizky and Pullani, Ali Nafih and Schwung, Andreas and Schwung, Dorothea}, title = {Model-based Reinforcement Learning for Sim-to-Real Transfer in Robotics using HTM neural networks}, series = {2024 10th International Conference on Control, Decision and Information Technologies (CoDIT), 1-4 July 2024}, volume = {97}, booktitle = {2024 10th International Conference on Control, Decision and Information Technologies (CoDIT), 1-4 July 2024}, publisher = {IEEE}, doi = {10.1109/CoDIT62066.2024.10708424}, pages = {43 -- 48}, year = {2024}, subject = {Maschinelles Lernen}, language = {en} } @inproceedings{LippelBeckerZielke2019, author = {Lippel, Jens and Becker, Martin and Zielke, Thomas}, title = {Modeling Dynamic Processes with Deep Neural Networks: A Case Study with a Gas-fired Absorption Heat Pump}, series = {SIMULTECH 2019: Proceedings of the 9th International Conference on Simulation and Modeling Methodologies, Technologies and Applications : Prague, Czech RepublicJuly 29-31, 2019}, booktitle = {SIMULTECH 2019: Proceedings of the 9th International Conference on Simulation and Modeling Methodologies, Technologies and Applications : Prague, Czech RepublicJuly 29-31, 2019}, editor = {Obaidat, Mohammad S. and {\"O}ren, Tuncer and Szczerbicka, Helena}, publisher = {INSTICC}, isbn = {978-989-758-381-0}, doi = {10.5220/0007932903170326}, pages = {317 -- 326}, year = {2019}, language = {en} } @article{GrebSteffensSchlotz2019, author = {Greb, Fabian and Steffens, Jochen and Schlotz, Wolff}, title = {Modeling Music-Selection Behavior in Everyday Life: A Multilevel Statistical Learning Approach and Mediation Analysis of Experience Sampling Data}, series = {Frontiers in psychology}, volume = {10}, journal = {Frontiers in psychology}, publisher = {Frontiers}, doi = {10.3389/fpsyg.2019.00390}, year = {2019}, abstract = {Music listening has become a highly individualized activity with smartphones and music streaming services providing listeners with absolute freedom to listen to any kind of music in any situation. Until now, little has been written about the processes underlying the selection of music in daily life. The present study aimed to disentangle some of the complex processes among the listener, situation, and functions of music listening involved in music selection. Utilizing the experience sampling method, data were collected from 119 participants using a smartphone application. For 10 consecutive days, participants received 14 prompts using stratified-random sampling throughout the day and reported on their music-listening behavior. Statistical learning procedures on multilevel regression models and multilevel structural equation modeling were used to determine the most important predictors and analyze mediation processes between person, situation, functions of listening, and music selection. Results revealed that the features of music selected in daily life were predominantly determined by situational characteristics, whereas consistent individual differences were of minor importance. Functions of music listening were found to act as a mediator between characteristics of the situation and music-selection behavior. We further observed several significant random effects, which indicated that individuals differed in how situational variables affected their music selection behavior. Our findings suggest a need to shift the focus of music-listening research from individual differences to situational influences, including potential person-situation interactions.}, language = {en} } @inproceedings{RoegnvaldssonArnasonPalssonetal.2015, author = {R{\"o}gnvaldsson, {\´O}lafur and Arnason, Gylfi and Palsson, Thorgeir and Eliasson, Jonas and Weber, Konradin and B{\"o}hlke, Christoph and Thorsteinsson, Throstur and Tirpitz, Lukas and Platt, Ulrich and Smith, Paul D. and Jones, Roderic L.}, title = {Modeling of SO2 dispersion from the 2014 Holuhraun eruption in Iceland using WRF-Chem}, series = {Geophysical Research Abstracts: EGU General Assembly 2015}, volume = {17}, booktitle = {Geophysical Research Abstracts: EGU General Assembly 2015}, publisher = {Copernicus}, address = {G{\"o}ttingen}, year = {2015}, abstract = {The fissure eruption in Holuhraun in central Iceland is the country's largest lava and gas eruption since 1783 but has produced very little volcanic ash. The eruption started in late August 2014 and is still ongoing as of January 2015. The main threat from this event has been atmospheric pollution of SO2 that is carried by wind to all parts of the country and produces elevated concentrations of SO2 that have frequently violated National Air Quality Standards (NAQS) in many population centers. The Volcanic Ash Research (VAR) group in Iceland is focused on airborne measurement of ash contamination to support safe air travel, as well as various gas concentrations. In relation to the Holuhraun eruption the VAR group has organized an investigation campaign including 10 measurement flights and performed measurements of both the source emissions and the plume distribution. SO2 concentrations measured at the source showed clear potential for creating pollution events in the toxic range and contamination of surface waters. The data obtained in the measurement campaign was used for calibration of the WRF-chem model of the dispersion of SO2 and volcanic ash concentration. The model has both been run in operational forecast mode (since mid October) as well as in a dynamical downscaling mode, to estimate the dispersion and fallout of SO2 from the plume. The model results indicate that a large part of the sulphur was precipitated in the Icelandic highlands. The first melt waters during the spring thaw are likely to contain acid sulphur compounds that can be harmful for vegetation, with the highland vegetation being the most vulnerable. These results will be helpful to estimate the pollution load on farmlands and pastures of farmers.}, subject = {Vulkanismus}, language = {en} } @inproceedings{LinnemannEchternachtBreueretal.2011, author = {Linnemann, Christian and Echternacht, David and Breuer, Christopher and Moser, Albert}, title = {Modeling optimal redispatch for the European Transmission grid}, series = {2011 IEEE Trondheim PowerTech,19.06.2011 - 23.06.2011, Trondheim}, booktitle = {2011 IEEE Trondheim PowerTech,19.06.2011 - 23.06.2011, Trondheim}, publisher = {IEEE}, isbn = {978-1-4244-8418-8}, doi = {10.1109/PTC.2011.6019442}, pages = {1 -- 8}, year = {2011}, language = {en} } @article{LehmannWittpahlZakouretal.2019, author = {Lehmann, Matthias and Wittpahl, Christian and Zakour, Hatem Ben and Braun, Alexander}, title = {Modeling realistic optical aberrations to reuse existing drive scene recordings for autonomous driving validation}, series = {Journal of Electronic Imaging}, volume = {28}, journal = {Journal of Electronic Imaging}, number = {1}, publisher = {SPIE}, issn = {1560-229X}, doi = {10.1117/1.JEI.28.1.013005}, pages = {013005}, year = {2019}, abstract = {Training autonomous vehicles requires lots of driving sequences in all situations. Collecting and labeling these drive scenes is a very time-consuming and expensive process. Currently, it is not possible to reuse these drive scenes with different optical properties, because there exists no numerically efficient model for the transfer function of the optical system. We present a numerical model for the point spread function (PSF) of an optical system that can efficiently model both experimental measurements and lens design simulations of the PSF. The numerical basis for this model is a nonlinear regression of the PSF with an artificial neural network. The novelty lies in the portability and the parameterization of this model. We present a lens measurement series, yielding a numerical function for the PSF that depends only on the parameters defocus, field, and azimuth. By convolving existing images and videos with this PSF, we generate images as if seen through the measured lens. The methodology applies to any optical scenario, but we focus on the context of autonomous driving, where the quality of the detection algorithms depends directly on the optical quality of the used camera system. With this model, it is possible to reuse existing recordings, with the potential to avoid millions of test drive miles. The parameterization of the optical model allows for a method to validate the functional and safety limits of camera-based advanced driver assistance systems based on the real, measured lens actually used in the product.}, language = {en} } @article{LeadbetterHortvonLoewisetal.2012, author = {Leadbetter, S. J. and Hort, M. C. and von L{\"o}wis, S. and Weber, Konradin and Witham, C. S.}, title = {Modeling the resuspension of ash deposited during the eruption of Eyjafjallaj{\"o}kull in spring 2010}, series = {Journal of Geophysical Research: Atmospheres}, volume = {117}, journal = {Journal of Geophysical Research: Atmospheres}, number = {D20}, publisher = {American Geophysical Union (AGU)}, issn = {0148-0227}, doi = {10.1029/2011JD016802}, year = {2012}, abstract = {Eyjafjallaj{\"o}kull, a volcano in southern Iceland, erupted explosively in April and May 2010 depositing ash over a region of more than 3000 km2 to the east and southeast of the volcano. This deposited ash has been frequently remobilized by the wind causing concern for the health of Icelanders living in the region. An investigation was carried out to determine whether it would be possible to produce forecasts of days when high airborne ash concentrations were likely to occur. Information about the spatially varying surface characteristics of the region of deposited ash is not available so in the modeling approach adopted here ash is released from the surface at a rate proportional to the cube of the excess friction velocity (local friction velocity minus a threshold) only when the friction velocity exceeds a threshold. Movement of the resuspended ash is then modeled in a Lagrangian dispersion model. Modeled ash concentrations are compared to observed concentrations from two periods; PM10 observations between 23 May and 2 July 2010 and airborne particle counts between 21 September 2010 and 16 February 2011. More than 66\% of the resuspension episodes between May and July are captured by the model and the relative magnitudes of the modeled episodes in this period are in good agreement with the observations. 66\% of episodes between October and February are also captured by the model although there is an increase in the false alarm rate which appears to be due to the influence of precipitation.}, language = {en} } @article{VersuemerSteffensBlaettermannetal.2020, author = {Vers{\"u}mer, Siegbert and Steffens, Jochen and Bl{\"a}ttermann, Patrick and Becker-Schweitzer, J{\"o}rg}, title = {Modelling evaluations of low-level sounds in everyday situations using linear machine learning for variable selection}, series = {Frontiers in Psychology}, volume = {11}, journal = {Frontiers in Psychology}, publisher = {Frontiers}, issn = {1664-1078}, doi = {10.3389/fpsyg.2020.570761}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-23779}, year = {2020}, language = {en} } @article{BenimEppleKrohmer2005, author = {Benim, Ali Cemal and Epple, B. and Krohmer, B.}, title = {Modelling of pulverised coal combustion by a Eulerian-Eulerian two-phase flow formulation}, series = {Progress in Computational Fluid Dynamics, An International Journal}, volume = {5}, journal = {Progress in Computational Fluid Dynamics, An International Journal}, number = {6}, publisher = {inderscience}, doi = {10.1504/pcfd.2005.007067}, pages = {345}, year = {2005}, language = {en} } @inproceedings{JuerjensOchoaSchmidtetal.2011, author = {J{\"u}rjens, Jan and Ochoa, Mart{\´i}n and Schmidt, Holger and Marchal, Lo{\"i}c and Houmb, Siv Hilde and Islam, Shareeful}, title = {Modelling Secure Systems Evolution: Abstract and Concrete Change Specifications}, series = {Formal Methods for Eternal Networked Software Systems: 11th International School on Formal Methods for the Design of Computer, Communication and Software Systems, SFM 2011, Bertinoro, Italy, June 13-18, 2011. Advanced Lectures}, volume = {LNCS, 6659}, booktitle = {Formal Methods for Eternal Networked Software Systems: 11th International School on Formal Methods for the Design of Computer, Communication and Software Systems, SFM 2011, Bertinoro, Italy, June 13-18, 2011. Advanced Lectures}, editor = {Bernardo, Marco and Issarny, Val{\´e}rie}, publisher = {Springer}, address = {Berlin, Heidelberg}, isbn = {978-3-642-21455-4}, doi = {10.1007/978-3-642-21455-4_15}, pages = {504 -- 526}, year = {2011}, abstract = {Developing security-critical systems is difficult, and there are many well-known examples of vulnerabilities exploited in practice. In fact, there has recently been a lot of work on methods, techniques, and tools to improve this situation already at the system specification and design. However, security-critical systems are increasingly long-living and undergo evolution throughout their lifetime. Therefore, a secure software development approach that supports maintaining the needed levels of security even through later software evolution is highly desirable. In this chapter, we recall the UMLsec approach to model-based security and discuss on tools and techniques to model and verify evolution of UMLsec models.}, language = {en} } @inproceedings{EchternachtStaggePriebeetal.2015, author = {Echternacht, David and Stagge, Hanno and Priebe, Jens and Wiernes, Pablo Ezequiel and Jagielski, Kai and Petri, Anne-Kathrin and Drießen, Sarah and Trevisan, Bianka and Digmayer, Claas and Oberst, Christian A. and Keysselitz, B{\"a}rbel and Kremer, Martin and Sieber, Sandra and Krapp, Stefan and Jakobs, Eva-Maria and Frenz, Martin and Lohrberg, Frank and Wachten, Kunibert and Moser, Albert}, title = {Modelling, Planning, Design and Evaluation of DC-Distribution Grids}, series = {International ETG Congress 2015 : die Energiewende ; blueprints for the new energy age ; proceedings ; November 17 - 18, 2015, World Conference Center, Bonn}, booktitle = {International ETG Congress 2015 : die Energiewende ; blueprints for the new energy age ; proceedings ; November 17 - 18, 2015, World Conference Center, Bonn}, publisher = {VDE-Verl.}, address = {Bonn}, pages = {289 -- 295}, year = {2015}, language = {en} } @misc{Mehlhorn2017, author = {Mehlhorn, Nils}, title = {Modern Cross-Platform Development for Mobile Applications}, address = {D{\"u}sseldorf}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-11276}, pages = {43}, year = {2017}, abstract = {While developing for multiple platforms at once seems like a convenient solution, there are several challenges arising when trying to abstract the entire mobile development. This paper is meant to evaluate current cross-platform development for mobile applications. The background for its necessity, its conceptual approach and the problems to face when developing cross-platform were determined and explained in detail. Afterwards, certain solutions were evaluated against the former insights. Based on the results, an informed discussion and conclusion was performed. The mobile environment consist of only two big players by now, Android and iOS. These operating systems differ in architecture, design and consequently in the way applications are developed for each of them. Therefore, high demands are made towards cross-platform solutions. Tools which allow for the creation of applications for multiple platforms at once have to match native applications in regard to user experience and performance. At the same time they need to be able to optimize developments with the goal of being cost efficient. Apache Cordova, Xamarin and NativeScript were selected for evaluation in regard to their ability to meet these requirements. Cordova acts as the comparison group of cross-platform tools. It is the big player in the field and there are reasons for this. However, aspiring solutions with higher nativity and ambitious approaches are emerging. Xamarin and NativeScript deliver top quality results while offering loosely coupled developments. Therefore it is possible to develop high quality applications and still benefit from the advantages of platform-independent solutions. As a consequence mobile development is about to change in the foreseeable future. More sophisticated approaches may lead to a higher number of developments done cross-platform, and rightfully so.}, language = {en} } @inproceedings{HurdTruckenmuellerThammetal.2005, author = {Hurd, Paul and Truckenmueller, Frank and Thamm, Norbert and Pollak, Helmut and Neef, Matthias and Deckers, Mathias}, title = {Modern Reaction HP/IP Turbine Technology Advances and Experiences}, series = {Proceedings of the ASME Power Conference - 2005 : includes papers from the 2005 International Conference on Power Engineering (ICOPE) ; presented at the 2005 ASME Power Conference, April 5 - 7, 2005, Chicago, Illinois, USA}, booktitle = {Proceedings of the ASME Power Conference - 2005 : includes papers from the 2005 International Conference on Power Engineering (ICOPE) ; presented at the 2005 ASME Power Conference, April 5 - 7, 2005, Chicago, Illinois, USA}, publisher = {ASME}, address = {New York}, isbn = {0-7918-4182-0}, doi = {10.1115/PWR2005-50085}, pages = {425 -- 435}, year = {2005}, language = {en} } @article{EliassonPalssonWeber2011, author = {El{\´i}asson, J{\´o}nas and Palsson, Asgeir and Weber, Konradin}, title = {Monitoring ash clouds for aviation}, series = {Nature}, volume = {475}, journal = {Nature}, number = {7357}, publisher = {Springer Nature}, doi = {10.1038/475455b}, pages = {455}, year = {2011}, language = {en} } @article{GalbanMaderwaldEggebrechtetal.2005, author = {Galban, Craig and Maderwald, Stefan and Eggebrecht, Holger and Grote, Wolfgang and de Greiff, A. and Uffmann, K. and Ladd, M. E.}, title = {Monitoring the Effects of Chronic Obstructive Pulmonary Disease on Muscle Elasticity by MR Elastography}, series = {Proc. Intl. Soc. Mag. Reson. Med.}, volume = {13}, journal = {Proc. Intl. Soc. Mag. Reson. Med.}, pages = {2015}, year = {2005}, abstract = {Men afflicted with chronic obstructive pulmonary disease (COPD) show signs of muscle dysfunction, such as increased muscle fatigue and acidosis during exercise. We hypothesize that muscle elasticity of the lower extremities differs between patients with COPD and age-related controls. The shear modulus of the soleus muscle was measured non-invasively using MR elastography (MRE) at 0\%, 5\%, 10\%, 15\%, and 20\% of the subject's maximum applied force. The results from this study showed statistical differences between the patients and controls, even though there were no statistical differences in the maximum applied force.}, language = {en} } @article{AgneseSalvador2012, author = {Agnese, Pablo and Salvador, Pablo F.}, title = {More alike than different: the Spanish and Irish labour markets before and after the crisis}, series = {IZA Journal of European Labor Studies}, volume = {1}, journal = {IZA Journal of European Labor Studies}, number = {1}, publisher = {Springer Nature}, issn = {2193-9012}, doi = {10.1186/2193-9012-1-9}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-28185}, pages = {9}, year = {2012}, language = {en} } @inproceedings{MuellerMeuterPark2008, author = {M{\"u}ller, Dennis and Meuter, Mirko and Park, Su-Birm}, title = {Motion segmentation using interest points}, series = {2008 IEEE Intelligent Vehicles Symposium}, booktitle = {2008 IEEE Intelligent Vehicles Symposium}, publisher = {IEEE}, isbn = {978-1-4244-2568-6}, doi = {10.1109/IVS.2008.4621239}, pages = {19 -- 24}, year = {2008}, language = {en} } @inproceedings{LadwigEversJansenetal.2020, author = {Ladwig, Philipp and Evers, Kester and Jansen, Eric J. and Fischer, Ben and Nowottnik, David and Geiger, Christian}, title = {MotionHub: Middleware for Unification of Multiple Body Tracking Systems}, series = {Proceedings of the 7th International Conference on Movement and Computing: MOCO '20: 7th International Conference on Movement and Computing, Jersey City, 15.07.2020-17.07.2020}, booktitle = {Proceedings of the 7th International Conference on Movement and Computing: MOCO '20: 7th International Conference on Movement and Computing, Jersey City, 15.07.2020-17.07.2020}, publisher = {ACM}, address = {New York}, isbn = {9781450375054}, doi = {10.1145/3401956.3404185}, pages = {1 -- 8}, year = {2020}, language = {en} } @inproceedings{Dahm2007, author = {Dahm, Markus}, title = {MP3ergo - Usability of MP3 players}, series = {proc. 10th intl conf Humans and Computers, Duesseldorf}, booktitle = {proc. 10th intl conf Humans and Computers, Duesseldorf}, address = {D{\"u}sseldorf}, pages = {123 -- 128}, year = {2007}, abstract = {Listening to music played by small MP3-players is almost as ubiquituous as talking over mobile phones. In this paper we analyse interaction elements and usabilty of current MP3-players. To determine the usability, an empirical study based on a website that presented three simulated MP3-players was performed with over 1000 participants. The results show that, despite most marketing claims, some interaction devices are not as intuitive and really suitable for the task as they schould be. Also we found some surprising results concerning erroneous usage of navigation keys.}, language = {en} } @article{HubervanderBurgvanderHooftetal.2021, author = {Huber, Florian and van der Burg, Sven and van der Hooft, Justin J. J. and Ridder, Lars}, title = {MS2DeepScore: a novel deep learning similarity measure to compare tandem mass spectra}, series = {Journal of Cheminformatics}, volume = {13}, journal = {Journal of Cheminformatics}, number = {1}, publisher = {Cold Spring Harbor Laboratory}, issn = {1758-2946}, doi = {10.1186/s13321-021-00558-4}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-34847}, pages = {84}, year = {2021}, abstract = {Mass spectrometry data is one of the key sources of information in many workflows in medicine and across the life sciences. Mass fragmentation spectra are generally considered to be characteristic signatures of the chemical compound they originate from, yet the chemical structure itself usually cannot be easily deduced from the spectrum. Often, spectral similarity measures are used as a proxy for structural similarity but this approach is strongly limited by a generally poor correlation between both metrics. Here, we propose MS2DeepScore: a novel Siamese neural network to predict the structural similarity between two chemical structures solely based on their MS/MS fragmentation spectra. Using a cleaned dataset of > 100,000 mass spectra of about 15,000 unique known compounds, we trained MS2DeepScore to predict structural similarity scores for spectrum pairs with high accuracy. In addition, sampling different model varieties through Monte-Carlo Dropout is used to further improve the predictions and assess the model's prediction uncertainty. On 3600 spectra of 500 unseen compounds, MS2DeepScore is able to identify highly-reliable structural matches and to predict Tanimoto scores for pairs of molecules based on their fragment spectra with a root mean squared error of about 0.15. Furthermore, the prediction uncertainty estimate can be used to select a subset of predictions with a root mean squared error of about 0.1. Furthermore, we demonstrate that MS2DeepScore outperforms classical spectral similarity measures in retrieving chemically related compound pairs from large mass spectral datasets, thereby illustrating its potential for spectral library matching. Finally, MS2DeepScore can also be used to create chemically meaningful mass spectral embeddings that could be used to cluster large numbers of spectra. Added to the recently introduced unsupervised Spec2Vec metric, we believe that machine learning-supported mass spectral similarity measures have great potential for a range of metabolomics data processing pipelines.}, language = {en} } @article{deJongeLouwenChekmenevaetal.2023, author = {de Jonge, Niek F. and Louwen, Joris J. R. and Chekmeneva, Elena and Camuzeaux, Stephane and Vermeir, Femke J. and Jansen, Robert S. and Huber, Florian and van der Hooft, Justin J. J.}, title = {MS2Query: reliable and scalable MS2 mass spectra-based analogue search}, series = {Nature Communications}, volume = {14}, journal = {Nature Communications}, publisher = {Springer}, issn = {2041-1723}, doi = {10.1038/s41467-023-37446-4}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-46105}, pages = {12}, year = {2023}, abstract = {Metabolomics-driven discoveries of biological samples remain hampered by the grand challenge of metabolite annotation and identification. Only few metabolites have an annotated spectrum in spectral libraries; hence, searching only for exact library matches generally returns a few hits. An attractive alternative is searching for so-called analogues as a starting point for structural annotations; analogues are library molecules which are not exact matches but display a high chemical similarity. However, current analogue search implementations are not yet very reliable and relatively slow. Here, we present MS2Query, a machine learning-based tool that integrates mass spectral embedding-based chemical similarity predictors (Spec2Vec and MS2Deepscore) as well as detected precursor masses to rank potential analogues and exact matches. Benchmarking MS2Query on reference mass spectra and experimental case studies demonstrate improved reliability and scalability. Thereby, MS2Query offers exciting opportunities to further increase the annotation rate of metabolomics profiles of complex metabolite mixtures and to discover new biology.}, subject = {Metabolomik}, language = {en} } @article{MuellerBraun2023, author = {M{\"u}ller, Patrick and Braun, Alexander}, title = {MTF as a performance indicator for AI algorithms?}, series = {Electronic Imaging: Society for Imaging Science and Technology}, volume = {35}, journal = {Electronic Imaging: Society for Imaging Science and Technology}, number = {16}, publisher = {Society for Imaging Science and Technology}, issn = {2470-1173}, doi = {10.2352/EI.2023.35.16.AVM-125}, pages = {1 -- 7}, year = {2023}, abstract = {Abstract The modulation-transfer function (MTF) is a fundamental optical metric to measure the optical quality of an imaging system. In the automotive industry it is used to qualify camera systems for ADAS/AD. Each modern ADAS/AD system includes evaluation algorithms for environment perception and decision making that are based on AI/ML methods and neural networks. The performance of these AI algorithms is measured by established metrics like Average Precision (AP) or precision-recall-curves. In this article we research the robustness of the link between the optical quality metric and the AI performance metric. A series of numerical experiments were performed with object detection and instance segmentation algorithms (cars, pedestrians) evaluated on image databases with varying optical quality. We demonstrate with these that for strong optical aberrations a distinct performance loss is apparent, but that for subtle optical quality differences - as might arise during production tolerances - this link does not exhibit a satisfactory correlation. This calls into question how reliable the current industry practice is where a produced camera is tested end-of-line (EOL) with the MTF, and fixed MTF thresholds are used to qualify the performance of the camera-under-test.}, language = {en} } @phdthesis{Spiegel2024, author = {Spiegel, Thomas}, title = {Multi-criteria flexibility allocation for electric distribution networks}, publisher = {IRC-Library, Information Resource Center der Constructor University}, address = {Bremen}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:579-opus-1011990}, year = {2024}, abstract = {Germany's national climate protection policy, the German Energy Transition, is oriented towards the reduction of energy-related greenhouse gas emissions by rapidly expanding the share of renewable energy systems. New challenges arise regarding technical and energy economical integration as installed wind and photovoltaic power capacities increase continuously. This thesis contributes to the topic by introducing a framework for online multi-criteria flexibility allocation in electrical distribution networks with transport capacity limitations. It considers technical aspects and market participant interests that may contradict each other. Local master data is preprocessed using geospatial information of buildings, photovoltaic systems, wind turbines, and the human population within a spatial domain of interest. By combining weather forecast data, this establishes the foundation for predicting power flow in the electrical distribution network and generating grid-beneficial criteria utilizing the smart grid traff.}, language = {en} } @article{ZanderRuessBogetal.2017, author = {Zander, Nils and Ruess, Martin and Bog, Tino and Kollmannsberger, Stefan and Rank, Ernst}, title = {Multi-level hp -adaptivity for cohesive fracture modeling}, series = {International Journal for Numerical Methods in Engineering}, volume = {109}, journal = {International Journal for Numerical Methods in Engineering}, number = {13}, publisher = {Wiley}, issn = {1097-0207}, doi = {10.1002/nme.5340}, pages = {1723 -- 1755}, year = {2017}, language = {en} } @article{ElhaddadZanderBogetal.2018, author = {Elhaddad, Mohamed and Zander, Nils and Bog, Tino and Kudela, L{\´a}szl{\´o} and Kollmannsberger, Stefan and Kirschke, Jan and Baum, Thomas and Ruess, Martin and Rank, Ernst}, title = {Multi-level hp-finite cell method for embedded interface problems with application in biomechanics}, series = {International Journal for Numerical Methods in Biomedical Engineering}, volume = {34}, journal = {International Journal for Numerical Methods in Biomedical Engineering}, number = {4}, publisher = {Wiley}, issn = {2040-7947}, doi = {10.1002/cnm.2951}, year = {2018}, abstract = {This work presents a numerical discretization technique for solving 3-dimensional material interface problems involving complex geometry without conforming mesh generation. The finite cell method (FCM), which is a high-order fictitious domain approach, is used for the numerical approximation of the solution without a boundary-conforming mesh. Weak discontinuities at material interfaces are resolved by using separate FCM meshes for each material sub-domain and weakly enforcing the interface conditions between the different meshes. Additionally, a recently developed hierarchical hp-refinement scheme is used to locally refine the FCM meshes to resolve singularities and local solution features at the interfaces. Thereby, higher convergence rates are achievable for nonsmooth problems. A series of numerical experiments with 2- and 3-dimensional benchmark problems is presented, showing that the proposed hp-refinement scheme in conjunction with the weak enforcement of the interface conditions leads to a significant improvement of the convergence rates, even in the presence of singularities. Finally, the proposed technique is applied to simulate a vertebra-implant model. The application showcases the method's potential as an accurate simulation tool for biomechanical problems involving complex geometry, and it demonstrates its flexibility in dealing with different types of geometric description.}, language = {en} } @article{BiedermannReichPaschereit2020, author = {Biedermann, Till M. and Reich, M. and Paschereit, C. O.}, title = {Multi-Objective Modeling of Leading-Edge Serrations Applied to Low-Pressure Axial Fans}, series = {Journal of Engineering for Gas Turbines and Power}, volume = {142}, journal = {Journal of Engineering for Gas Turbines and Power}, number = {11}, publisher = {ASME}, doi = {10.1115/1.4048599}, year = {2020}, language = {en} } @inproceedings{GottschaldAdamReich2018, author = {Gottschald, Jonas and Adam, Mario and Reich, Marius}, title = {Multi-Objective Optimization of a District Heating Networks Energy Supply Systems Structure and Dimension}, series = {SDH - 5th International Solar District Heating Conference, 11.-12.04.2018, Graz / Austria}, booktitle = {SDH - 5th International Solar District Heating Conference, 11.-12.04.2018, Graz / Austria}, address = {Graz}, organization = {SDH projects}, year = {2018}, language = {en} } @article{PetrarcaHeninStelmaszczyketal.2011, author = {Petrarca, M. and Henin, S. and Stelmaszczyk, K. and Bock, S. and Kraft, S. and Schramm, U. and Vaneph, C. and Vogel, A. and Kasparian, J. and Sauerbrey, R. and Weber, Konradin and W{\"o}ste, L. and Wolf, J.-P.}, title = {Multijoule scaling of laser-induced condensation in air}, series = {Applied Physics Letters}, volume = {99}, journal = {Applied Physics Letters}, number = {14}, publisher = {AIP Publishing}, issn = {0003-6951}, doi = {10.1063/1.3646397}, year = {2011}, abstract = {Using 100 TW laser pulses, we demonstrate that laser-induced nanometric particle generation in air increases much faster than the beam-averaged incident intensity. This increase is due to a contribution from the photon bath, which adds up with the previously identified one from the filaments and becomes dominant above 550 GW/cm2. It appears related to ozone formation via multiphoton dissociation of the oxygen molecules and demonstrates the critical need for further increasing the laser energy in view of macroscopic effects in laser-induced condensation.}, language = {en} } @inproceedings{FiedlerRillingBogenetal.2015, author = {Fiedler, Jannik and Rilling, Stefan and Bogen, Manfred and Herder, Jens}, title = {Multimodal interaction techniques in scientific data visualization: An analytical survey}, series = {In Proceedings of the 10th International Conference on Computer Graphics Theory and Applications (GRAPP-2015)}, booktitle = {In Proceedings of the 10th International Conference on Computer Graphics Theory and Applications (GRAPP-2015)}, editor = {Braz, Jos{\´e}}, publisher = {SCITEPRESS}, address = {s. l.}, isbn = {978-989-758-087-1}, doi = {10.5220/0005296404310437}, pages = {431 -- 437}, year = {2015}, abstract = {The interpretation process of complex data sets makes the integration of effective interaction techniques crucial. Recent work in the field of human-computer interaction has shown that there is strong evidence that multimodal user interaction, i.e. the integration of various input modalities and interaction techniques into one comprehensive user interface, can improve human performance when interacting with complex data sets. However, it is still unclear which factors make these user interfaces superior to unimodal user interfaces. The contribution of this work is an analytical comparison of a multimodal and a unimodal user interface for a scientific visualization application. We show that multimodal user interaction with simultaneously integrated speech and gesture input improves user performance regarding efficiency and ease of use.}, language = {en} } @inproceedings{SkodaSteffensBeckerSchweitzer2012, author = {Skoda, Sabrina and Steffens, Jochen and Becker-Schweitzer, J{\"o}rg}, title = {Multisensory interaction - A comparative study on driving sound evaluation in moving base and fixed base driving simulators}, series = {Proceedings of the Driving Simulation Conference 2012, CD-ROM}, booktitle = {Proceedings of the Driving Simulation Conference 2012, CD-ROM}, address = {Paris}, year = {2012}, language = {en} } @inproceedings{MoeserReuferGeiger2011, author = {M{\"o}ser, Annika and Reufer, Thomas and Geiger, Christian}, title = {Multitouch and pen interaction for 3D configuration of virtual yachts at trade fairs}, series = {Proceedings of the 8th International Conference on Advances in Computer Entertainment Technology - ACE '11, Lisbon, 08.11.2011 - 11.11.2011}, booktitle = {Proceedings of the 8th International Conference on Advances in Computer Entertainment Technology - ACE '11, Lisbon, 08.11.2011 - 11.11.2011}, editor = {Rom{\~a}o, Teresa and Correia, Nuno and Inami, Masahiko and Kato, Hirokasu and Prada, Rui and Terada, Tsutomu and Dias, Eduardo and Chambel, Teresa}, publisher = {ACM Press}, address = {New York}, isbn = {9781450308274}, doi = {10.1145/2071423.2071514}, pages = {1}, year = {2011}, language = {en} } @inproceedings{MarinosGeigerSchwirtenetal.2010, author = {Marinos, Dionysios and Geiger, Christian and Schwirten, Tobias and G{\"o}bel, Sebastian}, title = {Multitouch navigation in zoomable user interfaces for large diagrams}, series = {ACM International Conference on Interactive Tabletops and Surfaces - ITS '10, 07.11.2010 - 10.11.2010, Saarbr{\"u}cken}, booktitle = {ACM International Conference on Interactive Tabletops and Surfaces - ITS '10, 07.11.2010 - 10.11.2010, Saarbr{\"u}cken}, editor = {Kr{\"u}ger, Antonio and Sch{\"o}ning, Johannes and Wigdor, Daniel and Haller, Michael}, publisher = {ACM Press}, address = {New York}, isbn = {9781450303996}, doi = {10.1145/1936652.1936713}, pages = {275}, year = {2010}, language = {en} } @incollection{SteffensSteeleGuastavino2016, author = {Steffens, Jochen and Steele, Daniel and Guastavino, Catherine}, title = {Music influences the perception of our acoustic and visual environment}, series = {Proceedings of the 45th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2016}, booktitle = {Proceedings of the 45th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2016}, organization = {Institute of Noise Control Engineering}, pages = {7155 -- 7160}, year = {2016}, language = {en} } @article{ElversFischingerSteffens2018, author = {Elvers, Paul and Fischinger, Timo and Steffens, Jochen}, title = {Music listening as self-enhancement}, series = {Psychology of Music}, volume = {10}, journal = {Psychology of Music}, number = {2}, publisher = {Sage}, doi = {10.1177/0305735617707354}, pages = {1 -- 19}, year = {2018}, language = {en} } @masterthesis{Obry2023, type = {Bachelor Thesis}, author = {Obry, Yannick}, title = {Music Streaming Adaption - Drivers of Behavioral Intention}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-41326}, school = {Hochschule D{\"u}sseldorf}, pages = {31}, year = {2023}, abstract = {Music consumption and distribution has changed drastically in the last twenty years due to digitalization. Instead of buying music products, like CDs or even downloaded digital music files, today music is predominantly distributed via online music streaming. Therefore, it is mandatory for the music industry as well as researchers to determine which factors are affecting consumers intention to use music streaming services. This study aims to investigate drivers of Behavioral Intention (BI) to use a music streaming service. Particularly, aspects of social preferences in the context of music streaming will be explored. Therefore, a research model is created, based on the Value-based Adoption Model (VAM) (Kim et al., 2007) with an extension to take social factors into account. An online questionnaire with 102 participants was conducted to test the research model and the corresponding hypotheses. In order to evaluate reliable indications, some adjustments needed to be made resulting in a corrected research model. The final independent variables of the corrected model are Perceived Value (PV) (which is composed of Perceived Usefulness (PU) and Perceived Enjoyment (PE)), Perceived Ease of Use (PEU), Perceived Price Value (PPV), Facilitating Conditions (FC), Perceived Fairness (PF), Social Connectivity (SC), and Peer-Effects (PFX). The empirical results show that Perceived Value (PV), Perceived Price Value (PPV), and Perceived Fairness (PF) are determinants of consumers Behavioral Intention (BI) to use a music streaming service.}, language = {en} } @article{BehbehaniSteffens2021, author = {Behbehani, Sami and Steffens, Jochen}, title = {Musical DIAMONDS: The influence of situational classes and characteristics on music listening behavior}, series = {Psychology of Music}, volume = {49}, journal = {Psychology of Music}, number = {6}, publisher = {sage journals}, issn = {1741-3087}, doi = {10.1177/0305735620968910}, pages = {1532 -- 1545}, year = {2021}, language = {en} } @article{AckermannBrinkmannWeinzierl2024, author = {Ackermann, David and Brinkmann, Fabian and Weinzierl, Stefan}, title = {Musical instruments as dynamic sound sources}, series = {Journal of the Acoustical Society of America}, volume = {155}, journal = {Journal of the Acoustical Society of America}, publisher = {Acoustical Society of America}, issn = {1520‑8524}, doi = {10.1121/10.0025463}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-58972}, pages = {2302 -- 2313}, year = {2024}, abstract = {Unlike electro-acoustic sound sources, musical instruments have a time-varying, dynamic directivity, due to the note-dependent radiation behavior of the instrument and due to the expressive movements that musicians perform with their instrument. While previous studies have generally examined the directivity of the static, unmoved instrument for specific notes played, we show the individual and combined contributions of these two factors to a temporal modulation of the radiation behavior, based on motion tracking of typical movement patterns for all instruments of a classical symphony orchestra and on the directivity measured for all partials over the entire pitch range of these instruments. The effect of this modulation, which is manifested by changes in timbre and room acoustic excitation, was determined by spectral variations in the free field and under reverberant conditions, as well as by a modulation of room acoustic parameters. Our results show that these effects are well above the just noticeable differences for all musical instruments and all perceptual variables considered. While the effect of motion dominates for brass instruments, string and woodwind instruments exhibit large note-related differences, which should be taken into account in virtual acoustic realities if an auditory liveliness comparable to physical reality is to be achieved.}, language = {en} } @article{AngladaTortSteffensMuellensiefen2019, author = {Anglada-Tort, Manuel and Steffens, Jochen and M{\"u}llensiefen, Daniel}, title = {Names and titles matter: The impact of linguistic fluency and the affect heuristic on aesthetic and value judgements of music}, series = {Psychology of Aesthetics, Creativity, and the Arts}, volume = {13}, journal = {Psychology of Aesthetics, Creativity, and the Arts}, number = {3}, publisher = {APA}, doi = {10.1037/aca0000172}, pages = {277 -- 292}, year = {2019}, language = {en} } @inproceedings{GeigerPaelkeGansen2006, author = {Geiger, Christian and Paelke, Volker and Gansen, Ivonne}, title = {Navigating by Following Stories}, series = {Technologies for Interactive Digital Storytelling and Entertainment, Third International Conference, TIDSE 2006, Darmstadt, Germany, December 4-6, 2006, Proceedings}, booktitle = {Technologies for Interactive Digital Storytelling and Entertainment, Third International Conference, TIDSE 2006, Darmstadt, Germany, December 4-6, 2006, Proceedings}, editor = {Hutchison, David and Kanade, Takeo and Kittler, Josef and Kleinberg, Jon M. and Mattern, Friedemann and Mitchell, John C. and Naor, Moni and Nierstrasz, Oscar and Pandu Rangan, C. and Steffen, Bernhard and Sudan, Madhu and Terzopoulos, Demetri and Tygar, Dough and Vardi, Moshe Y. and Weikum, Gerhard and G{\"o}bel, Stefan and Malkewitz, Rainer and Iurgel, Ido}, publisher = {Springer}, address = {Berlin, Heidelberg}, isbn = {978-3-540-49934-3}, doi = {10.1007/11944577_32}, pages = {324 -- 333}, year = {2006}, language = {en} } @misc{SpindlerMadjlessiRoudi2025, author = {Spindler, Susanne and Madjlessi-Roudi, Sara}, title = {Navigating Repression: Social Space-oriented Social Work with Immigrants during the first Trump Era}, series = {sozialraum.de}, journal = {sozialraum.de}, number = {1}, editor = {Deinet, Ulrich}, publisher = {socialnet}, issn = {1868-2596}, year = {2025}, subject = {Migrationspolitik}, language = {en} } @inproceedings{Musall2011, author = {Musall, Eike}, title = {Near zero energy home, Net zero energy house, Plus energy building-How is it understood and how is it implemented?}, series = {Danfoss Heating Solutions' Technology Management Event, Billund}, booktitle = {Danfoss Heating Solutions' Technology Management Event, Billund}, address = {Billund}, year = {2011}, language = {en} } @incollection{VossMusallSartorietal.2013, author = {Voss, Karsten and Musall, Eike and Sartori, Igor and Lollini, Roberto}, title = {Nearly Zero, Net Zero, and Plus Energy Buildings - Theory, Terminology, Tools, and Examples}, series = {Transition to renewable energy systems}, booktitle = {Transition to renewable energy systems}, editor = {Stolten, Detlef and Scherer, Viktor}, publisher = {Wiley}, address = {Weinheim}, isbn = {978-3-527-33239-7}, doi = {10.1002/9783527673872.ch41}, pages = {875 -- 889}, year = {2013}, language = {en} } @article{AtacSchwiertzJorgensenetal.2023, author = {Ata{\c{c}}, Ilker and Schwiertz, Helge and J{\o}rgensen, Martin Bak and Vandevoordt, Robin and Hinger, Sophie and Spindler, Susanne}, title = {Negotiating Borders through a Politics of Scale: Municipalities and Urban Civil Society Initiatives in the Contested Field of Migration}, series = {Geopolitics}, volume = {29}, journal = {Geopolitics}, number = {2}, publisher = {Informa}, issn = {1465-0045}, doi = {10.1080/14650045.2022.2129732}, pages = {714 -- 740}, year = {2023}, subject = {Migration}, language = {en} } @incollection{Mueller2020, author = {M{\"u}ller, Regine}, title = {Negotiating with social problems. Professionalism in combatting child poverty in Germany}, series = {Social glocalisation and education. social work, health sciences and practical theology perspectives on change}, booktitle = {Social glocalisation and education. social work, health sciences and practical theology perspectives on change}, editor = {Hobelsberger, Hans}, publisher = {Verlag Barbara Budrich}, address = {Leverkusen}, isbn = {978-3-8474-1512-1}, pages = {279 -- 286}, year = {2020}, language = {en} } @incollection{AeleneiMusall2017, author = {Aelenei, Laura and Musall, Eike}, title = {Net ZEB case study buildings, measures and solution sets}, series = {Solution sets for net zero energy buildings}, booktitle = {Solution sets for net zero energy buildings}, editor = {Gardes, Fran{\c{c}}ois and Ayoub, Josef and Aelenei, Daniel and Aelenei, Laura and Scognamiglio, Alessandra}, publisher = {Ernst \& Sohn}, address = {Berlin}, isbn = {9783433604663}, doi = {10.1002/9783433604663.ch3}, pages = {39 -- 102}, year = {2017}, language = {en} }