@incollection{AlbrechtSchmidtMisslerBehretal., author = {Albrecht, Eike and Schmidt, Michael and Mißler-Behr, Magdalena and Spyra, Simon}, title = {Preface}, series = {Implementing Adaptation Strategies by Legal, Economic, and Planning Instruments on Climate Change}, booktitle = {Implementing Adaptation Strategies by Legal, Economic, and Planning Instruments on Climate Change}, publisher = {Springer}, address = {Berlin [u. a.]}, isbn = {978-3-540-77613-0}, pages = {XIII -- XIV}, language = {en} } @inproceedings{SimonWichmannSteinetal., author = {Simon, Sylvio and Wichmann, Steffen and Stein, Erhard and Schmidt, Sindy and Heise, Philipp}, title = {Vorbereitung des Werkzeugmaschinenlabor der BTU-CS, Campus SFB f{\"u}r Energieeffizienzmessungen in Maschinenparks und Ermittlung der Energieeffizienz am Beispiel ausgew{\"a}hlter LED Beleuchtung}, series = {Proceedings of the International Academic Forum AMO-SPITSE-NESEFF, 21 AMO Conference, Smolensk 2016}, booktitle = {Proceedings of the International Academic Forum AMO-SPITSE-NESEFF, 21 AMO Conference, Smolensk 2016}, publisher = {Izdat. Universum}, address = {Moscow [u.a.]}, isbn = {978-5-91412-313-7}, pages = {S. 127}, abstract = {Um den gesamten Energiebedarf f{\"u}r die Herstellung von Produkten zu erfassen, wird exemplarisch das Werkzeugmaschinenlabor der BTU C-S mit aktueller Messtechnik ausgestattet. Diese erm{\"o}glicht auch, m{\"o}gliche Beeinflussungen der Maschinen untereinander sichtbar zu machen. Bei der Ausr{\"u}stung von Werkzeugmaschinen mit LED Beleuchtung sind Besonderheiten zu beachten.}, language = {de} } @incollection{SimonWichmannSteinetal., author = {Simon, Sylvio and Wichmann, Steffen and Stein, Erhard and Schmidt, Sindy and Heise, Philipp and Herzog, Marcus}, title = {Vorbereitung des Werkzeugmaschinenlabors der BTU CS f{\"u}r Energieeffizienzmessungen in Maschinenparks und Ermittlung der Energieeffizienz am Beispiel ausgew{\"a}hlter LED Beleuchtung}, series = {20 Jahre IURS e.V. - Res{\"u}mee und ausgew{\"a}hlte Projekte 2012 - 2017}, booktitle = {20 Jahre IURS e.V. - Res{\"u}mee und ausgew{\"a}hlte Projekte 2012 - 2017}, edition = {1. Auflage}, publisher = {IURS e.V.}, address = {Senftenberg}, isbn = {978-3-00-058468-8}, pages = {36 -- 39}, abstract = {Die Ausr{\"u}stung des Labores mit computergest{\"u}tzter Messdatenerfassung sowie -analyse erm{\"o}glicht es, die Energiebedarfe der einzelnen, vor allem energieintensiven Maschinen darzustellen und ihre Auswirkung auf die Energieversorgung des Labors bzw. des {\"o}rtlichen Netzes sichtbar zu machen. Die im Zuge der Energieeinsparung oft durch LED Leuchtmittel erneuerte Arbeitsplatzbeleuchtung zeigte bei den Energiemessungen eine hohe Blindleistung. Sofern diese Blindleistung z.b. durch Kondensator-Netzteile verursacht wird, kann sie zur Kompensation induktiver Blindleistung aus elektromotorischen Antrieben, wie sie typisch sind f{\"u}r Werkzeugmaschinen, genutzt werden.}, language = {de} } @inproceedings{MedinaMendezGlaweStaricketal., author = {Medina M{\´e}ndez, Juan Ali and Glawe, Christoph and Starick, Tommy and Sch{\"o}ps, Mark Simon and Schmidt, Heiko}, title = {IMEX-ODTLES: A multi-scale and stochastic approach for highly turbulent flows}, series = {90th Annual Meeting of the International Association of Applied Mathematics and Mechanics February 18-22, 2019 Vienna, Austria, Abstract book}, booktitle = {90th Annual Meeting of the International Association of Applied Mathematics and Mechanics February 18-22, 2019 Vienna, Austria, Abstract book}, publisher = {TU-Verlag}, address = {Wien}, isbn = {978-3-903024-84-7}, pages = {S. 540}, language = {en} } @misc{SchmidtDornischMueller, author = {Schmidt, Simon and Dornisch, Wolfgang and M{\"u}ller, Ralf}, title = {A phase field model for martensitic transformation coupled with the heat equation}, series = {GAMM-Mitteilungen}, volume = {40}, journal = {GAMM-Mitteilungen}, number = {2}, issn = {1522-2608}, doi = {10.1002/gamm.201720005}, pages = {138 -- 153}, abstract = {In order to consider temperature dependency in a phase field model for martensitic transformations a temperature dependent phase separation potential is introduced. The kinematics and the energetic setup underlying the phase transformation are briefly explained. Parameters are identified using molecular dynamics (MD) simulations. The kinetics of the phase field model are in good agreement with those of the MD simulations. Further, the effect of temperature on the microstructure evolution is studied for varying initial austenite contents.}, language = {en} } @misc{SchmidtDornischMueller, author = {Schmidt, Simon and Dornisch, Wolfgang and M{\"u}ller, Ralf}, title = {Martensitic transformation at a crack under mode I and II loading}, series = {Proceedings in Applied Mathematics and Mechanics}, volume = {19}, journal = {Proceedings in Applied Mathematics and Mechanics}, number = {1}, publisher = {WILEY-VCH Verlag GmbH \& Co. KGaA}, address = {Weinheim}, issn = {1617-7061}, doi = {10.1002/pamm.201900465}, pages = {2}, abstract = {Metastable austenitic steels can undergo phase transformation. As an allotrope two crystal configurations are of interest: the softer austenitic parent phase and the martensitic phases. Here, the bain orientation relationship leads to distinct orientations for the martensitic variants with a different transformation strain [7]. A phase field approach is used to model the transformation, where a multi-valued order parameter urn:x-wiley:16177061:media:PAMM201900465:pamm201900465-math-0001 identifies the austenitic parent phase and the martensitic variants. This allows to define bulk and surface energies as regularized functions in terms of the order parameter and its gradient. The kinetics of the martensitic transformation are temperature dependent. Temperatures below an equilibrium temperature favour the growth of the martensitic phase, whereas temperatures above the equilibrium favour the austenitic phase. Approaching the equilibrium temperature slows down the transformation [5]. In this work we consider a static crack under mode I and mode II loading.}, language = {en} } @misc{MedinaMendezGlaweStaricketal., author = {Medina M{\´e}ndez, Juan Ali and Glawe, Christoph and Starick, Tommy and Sch{\"o}ps, Mark Simon and Schmidt, Heiko}, title = {IMEX-ODTLES: A multi-scale and stochastic approach for highly turbulent flows}, series = {Proceedings in Applied Mathematics and Mechanics}, volume = {19}, journal = {Proceedings in Applied Mathematics and Mechanics}, number = {1}, issn = {1617-7061}, doi = {10.1002/pamm.201900433}, abstract = {The stochastic One-Dimensional Turbulence (ODT) model is used in combination with a Large Eddy Simulation (LES) approach in order to illustrate the potential of the fully coupled model (ODTLES) for highly turbulent flows. In this work, we use a new C++ implementation of the ODTLES code in order to analyze the computational performance in a classical incompressible turbulent channel flow problem. The parallelization potential of the model, as well as its physical and numerical consistency are evaluated and compared to Direct Numerical Simulations (DNSs). The numerical results show that the model is capable of reproducing a representative part of the DNS data at a cheaper computational cost. This advantage can be enhanced in the future by the implementation of a straightforward parallelization approach.}, language = {en} } @misc{SimonWichmannSchmidtetal., author = {Simon, Sylvio and Wichmann, Steffen and Schmidt, Luise and Luthra, Gaurav}, title = {Untersuchung der Gratbildung beim Wasserstrahlschneiden}, series = {1. Ingenieurtag 2014 : Veranstaltung der Fakult{\"a}t Ingenieurwissenschaften und Informatik der Brandenburgischen Technischen Universit{\"a}t Cottbus-Senftenberg auf dem Campus Senftenberg am 19.11.2014}, journal = {1. Ingenieurtag 2014 : Veranstaltung der Fakult{\"a}t Ingenieurwissenschaften und Informatik der Brandenburgischen Technischen Universit{\"a}t Cottbus-Senftenberg auf dem Campus Senftenberg am 19.11.2014}, editor = {Lehmann, Kathrin}, publisher = {Senftenberg}, address = {Brandenburgische Technische Universit{\"a}t Cottbus-Senftenberg}, isbn = {3-9810211-7-7}, pages = {34 -- 34}, abstract = {Wasserstrahlschneiden als modernes Trennverfahren f{\"u}hrt bei weicheren Werkstoffen auf Grund der {\"o}rtlichen Verformungen durch den Schneidmittelstrahl zu einem Fließen der Werkstoffteilchen. Das macht sich als Grat z.B. bei Aluminiumwerkstoffen nachteilig bemerkbar.}, language = {de} } @misc{KrisponeitFischerEsseretal., author = {Krisponeit, Jon-Olaf and Fischer, Simon and Esser, Sven and Moshnyaga, Vasily and Schmidt, Thomas and Piper, Louis F. J. and Flege, Jan Ingo and Falta, Jens}, title = {The morphology of VO2/TiO2(001): terraces, facets, and cracks}, series = {Scientific Reports}, volume = {10}, journal = {Scientific Reports}, issn = {2045-2322}, doi = {10.1038/s41598-020-78584-9}, pages = {8}, abstract = {Vanadium dioxide (VO2) features a pronounced, thermally-driven metal-to-insulator transition at 340 K. Employing epitaxial stress on rutile TiO2(001) substrates, the transition can be tuned to occur close to room temperature. Striving for applications in oxide-electronic devices, the lateral homogeneity of such samples must be considered as an important prerequisite for efforts towards miniaturization. Moreover, the preparation of smooth surfaces is crucial for vertically stacked devices and, hence, the design of functional interfaces. Here, the surface morphology of VO2/TiO2(001) films was analyzed by low-energy electron microscopy and diffraction as well as scanning probe microscopy. The formation of large terraces could be achieved under temperature-induced annealing, but also the occurrence of facets was observed and characterized. Further, we report on quasi-periodic arrangements of crack defects which evolve due to thermal stress under cooling. While these might impair some applicational endeavours, they may also present crystallographically well-oriented nano-templates of bulk-like properties for advanced approaches.}, language = {en} } @misc{SchmidtAmmarDornischetal., author = {Schmidt, Simon David and Ammar, Kais and Dornisch, Wolfgang and Forest, Samuel and M{\"u}ller, Ralf}, title = {Phase field model for the martensitic transformation: comparison of the Voigt/Taylor and Khachaturyan approach}, series = {Continuum Mechanics and Thermodynamics}, volume = {33}, journal = {Continuum Mechanics and Thermodynamics}, number = {5}, issn = {0935-1175}, doi = {10.1007/s00161-021-01007-1}, pages = {2075 -- 2094}, language = {en} } @misc{CharisseErusPomponioetal., author = {Chariss{\´e}, Daniel and Erus, Guray and Pomponio, Raymond and Gorges, Martin and Schmidt, Nele and Schneider, Christine and Liepelt-Scarfone, Inga and Riedel, Oliver and Reetz, Kathrin and Schulz, J{\"o}rg B. and Berg, Daniela and Storch, Alexander and Witt, Karsten and Dodel, Richard and Kalbe, Elke and Kassubek, Jan and Hilker-Roggendorf, R{\"u}diger and Baudrexel, Simon}, title = {Brain age and Alzheimer's-like atrophy are domain-specific predictors of cognitive impairment in Parkinson's disease}, series = {Neurobiology of Aging}, volume = {109}, journal = {Neurobiology of Aging}, issn = {0197-4580}, doi = {10.1016/j.neurobiolaging.2021.08.020}, pages = {31 -- 42}, abstract = {Recently, it was shown that patients with Parkinson's disease (PD) who exhibit an "Alzheimer's disease (AD)-like" pattern of brain atrophy are at greater risk for future cognitive decline. This study aimed to investigate whether this association is domain-specific and whether atrophy associated with brain aging also relates to cognitive impairment in PD. SPARE-AD, an MRI index capturing AD-like atrophy, and atrophy-based estimates of brain age were computed from longitudinal structural imaging data of 178 PD patients and 84 healthy subjects from the LANDSCAPE cohort. All patients underwent an extensive neuropsychological test battery. Patients diagnosed with mild cognitive impairment or dementia were found to have higher SPARE-AD scores as compared to patients with normal cognition and healthy controls. All patient groups showed increased brain age. SPARE-AD predicted impairment in memory, language and executive functions, whereas advanced brain age was associated with deficits in attention and working memory. Data suggest that SPARE-AD and brain age are differentially related to domain-specific cognitive decline in PD. The underlying pathomechanisms remain to be determined.}, language = {en} } @misc{KleinSchoepsMedinaMendezetal., author = {Klein, Marten and Sch{\"o}ps, Mark Simon and Medina M{\´e}ndez, Juan Al{\´i} and Schmidt, Heiko}, title = {Numerical simulation and analysis of transient Ekman boundary layers using a stochastic turbulence model}, series = {EGU General Assembly 2023}, journal = {EGU General Assembly 2023}, publisher = {EGU - European Geophysical Union}, address = {Vienna, Austria}, doi = {10.5194/egusphere-egu23-9116}, language = {en} } @misc{KleinMedinaMendezSchoepsetal., author = {Klein, Marten and Medina M{\´e}ndez, Juan Al{\´i} and Sch{\"o}ps, Mark Simon and Schmidt, Heiko and Glawe, Christoph}, title = {Towards physics-based nowcasting of the instantaneous wind velocity profile using a stochastic modeling approach}, series = {STAB Jahresbericht 2024 zum 24. DGLR-Fachsymposium der STAB, 13. - 14. November 2024, Regensburg}, journal = {STAB Jahresbericht 2024 zum 24. DGLR-Fachsymposium der STAB, 13. - 14. November 2024, Regensburg}, publisher = {Deutsche Str{\"o}mungsmechanische Arbeitsgemeinschaft, STAB}, address = {Regensburg [et al.]}, pages = {162 -- 163}, abstract = {The primary objective of this contribution is to provide an overview of the regime-spanning forward modeling capabilities offered by the stochastic one-dimensional turbulence model. The focus is on the applicability of the model and its validation for neutral and stable atmospheric boundary layer flows as a prerequisite for future applications to challenging atmospheric conditions.}, language = {en} } @misc{MedinaMendezKleinSchoepsetal., author = {Medina M{\´e}ndez, Juan Ali and Klein, Marten and Sch{\"o}ps, Mark Simon and Schmidt, Heiko}, title = {Predicting volatile wind energy: Stochastic forward modeling and machine learning}, series = {86. Jahrestagung der DPG (86th Annual Conference of the DPG), DPG-Fr{\"u}hjahrstagung 2023, (DPG Spring Meeting 2023 of the Matter and Cosmos Section (SMuK), 20-24 March 2023, Technische Universit{\"a}t Dresden}, journal = {86. Jahrestagung der DPG (86th Annual Conference of the DPG), DPG-Fr{\"u}hjahrstagung 2023, (DPG Spring Meeting 2023 of the Matter and Cosmos Section (SMuK), 20-24 March 2023, Technische Universit{\"a}t Dresden}, publisher = {Deutsche Physikalische Gesellschaft}, address = {Bad Honnef}, issn = {2751-0522}, pages = {S. 343}, language = {en} } @misc{MarinkovićMedinaSchoepsetal., author = {Marinković, Pavle and Medina, Juan A. and Sch{\"o}ps, Mark Simon and Klein, Marten and Schmidt, Heiko}, title = {Experiences from the bottom-up development of an object-oriented CFD solver with prospective hybrid turbulence model applications}, series = {Proceedings in Applied Mathematics and Mechanics}, volume = {25}, journal = {Proceedings in Applied Mathematics and Mechanics}, number = {1}, publisher = {Wiley}, issn = {1617-7061}, doi = {10.1002/pamm.202400190}, abstract = {In this work, we discuss recent experiences related to the development and enhancement of a hybrid stochastic computational fluid dynamics (CFD) solver, the C++ version of the Implicit/Explicit (IMEX) time-advancement algorithm used in the one-dimensional turbulence-based (ODT) large eddy simulation (LES) model, abbreviated as ODTLES. After being ported from Fortran 90, the current capabilities of the C++ code are restricted to the reproducibility of turbulent channel flow simulations with respect to the former Fortran code version that was able to achieve reasonable agreement with available reference direct numerical simulation (DNS) for low to moderate Reynolds number turbulent channel flows. This is far from satisfactory so that current efforts are centered on improving the solver code structure through comprehensive refactoring, robust unit testing, and strict adherence to code style guides, following the principles of Clean Code. We focus the discussion on a methodology to balance unit, regression, and integration testing, here for the LES component of the code. The objective is to frame a starting point that is relevant also for other CFD codes, irrespective of whether they utilize conventional or novel discretization or flow modeling approaches.}, language = {en} } @incollection{KleinGlaweEhlertetal., author = {Klein, Marten and Glawe, Christoph and Ehlert, Mark Simon and Medina M{\´e}ndez, Juan Al{\´i} and Schmidt, Heiko}, title = {Stochastic modeling of intermittent inflow turbulence in the atmospheric boundary layer}, series = {New Results in Numerical and Experimental Fluid Mechanics XV : contributions to the 24th STAB/DGLR Symposium, Regensburg, Germany, 2024}, booktitle = {New Results in Numerical and Experimental Fluid Mechanics XV : contributions to the 24th STAB/DGLR Symposium, Regensburg, Germany, 2024}, editor = {Dillmann, Andreas and Heller, Gerd and Kr{\"a}mer, Ewald and Breitsamer, Christian and Wagner, Claus and Krenkel, Lars}, publisher = {Springer Nature Switzerland}, address = {Cham}, isbn = {978-3-032-11115-9}, issn = {1612-2909}, doi = {10.1007/978-3-032-11115-9_63}, pages = {684 -- 693}, abstract = {Wind turbine predesign is challenged by the representation of site-specific wind conditions. A good deal of that challenge lies in the modeling of the inflow turbulence in the atmospheric boundary layer (ABL). A stochastic one-dimensional turbulence (ODT) model is applied to an idealized neutrally stratified ABL and evolves the instantaneous velocity profile with full-scale resolution. The model is able to reproduce the law of the wall consistently after an initial calibration with the surface drag law. Investigating turbulent time series of the horizontal velocity components it is demonstrated that the model generates physically justified intermittency features with increasing turbulence intensity.}, language = {en} } @misc{MargolisSchmidtBoeckeletal., author = {Margolis, Anna and Schmidt, Simon L. and B{\"o}ckel, Alexa and Blomsma, Fenna}, title = {Applying design science in creativity and innovation management research : a decision guide for deepening research practice}, series = {Creativity and innovation management}, journal = {Creativity and innovation management}, publisher = {John Wiley \& Sons Ltd.}, address = {Hoboken, NJ}, issn = {1467-8691}, doi = {10.1111/caim.70049}, pages = {1 -- 38}, abstract = {Creativity and innovation management research (CIMR) seeks to understand how creative and innovative solutions emerge. Recently, greater practitioner engagement, interdisciplinary integration, process orientation and context-sensitive impact measurement have been proposed as realms of further development. To address these opportunities, we introduce Design Science Research (DSR) as a complementary methodology for CIMR. DSR connects theory and practice through the iterative development of practice-oriented artifacts that are grounded in theory, thus enabling scholars to co-create actionable tools jointly with practitioners. We have adapted DSR to the unique characteristics of CIMR—such as interdisciplinarity, process orientation and pluralist ontological and epistemological positions—by developing the DeepDSR Guide. The DeepDSR Guide supports CIMR scholars in making consistent and reflexive methodological choices throughout DSR projects. We have iteratively developed and validated the DeepDSR Guide with feedback from 21 scholars following a DSR approach. Our study contributes methodologically by adapting DSR to fit the pluralist, creative nature of CIMR and expands the application of DSR in management research.}, language = {en} }