Auflistung nach Schlagwort "Mathematical models"

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  • Berechnung der seitlichen Ankopplung eines Rechteckhohlleiters an einen Rundhohlleiter 
    Marquard, Jürgen; Wendel, Ralf; Grimm, Mathias (Berlin : De Gruyter, 1994)
    Es wird ein Berechnungsverfahren zur Bestimmung der Streuparameter der seitlichen Ankopplung eines Rechteckhohlleiters an einen Rundhohlleiter vorgestellt. Die Anordnung wird in einen Resonator- und drei Hohlleiterbereiche ...
  • Coherent cancellation of backaction noise in optomechanical force measurements 
    Wimmer, Maximilian H.; Steinmeyer, Daniel; Hammerer, Klemens; Heurs, Michèle (College Park, MD : American Physical Society, 2014)
    Optomechanical detectors have reached the standard quantum limit in position and force sensing where measurement backaction noise starts to be the limiting factor for the sensitivity. A strategy to circumvent measurement ...
  • From ultraslow to fast lithium diffusion in the 2D ion conductor Li0.7TiS2 probed directly by stimulated-echo NMR and nuclear magnetic relaxation 
    Wilkening, Martin; Küchler, W.; Heitjans, Paul (College Park, ML : American Physical Society, 2006)
    7Li stimulated-echo NMR and classical relaxation NMR techniques are jointly used for the first time for a comprehensive investigation of Li diffusion in layer-structured Li0.7TiS2. One single 2D Li diffusion process was ...
  • High frequency conductivity in the quantum Hall regime 
    Hohls, Frank; Zeitler, U.; Haug, Rolf J. (College Park, MD : American Physical Society, 2001)
    The frequency dependence of the longitudinal conductivity σxx for frequencies up to 6 GHz was measured. It was possible to access both the real part and the imaginary part of σxx which allowed to perform a new test of ...
  • Multicritical behavior in dissipative Ising models 
    Overbeck, Vincent Raphael; Maghrebi, Mohammad F.; Gorshkov, Alexey V.; Weimer, Hendrik (College Park, MD : American Physical Society, 2017)
    We analyze theoretically the many-body dynamics of a dissipative Ising model in a transverse field using a variational approach. We find that the steady-state phase diagram is substantially modified compared to its equilibrium ...
  • Numerical modelling of electrostatic force microscopes considering charge and dielectric constant 
    Bala, Uzzal Binit; Greiff, Michael; Preisner, Thomas; Mathis, Wolfgang (Bingley : Emerald Group Publishing Ltd., 2009)
    Purpose - The purpose of this paper is to present a hybrid numerical simulation approach for the calculation of potential and electric field distribution considering charge and dielectric constant. Design/methodology/ ...
  • A Parameter Identification Method for Static Cosserat Rod Models: Application to Soft Material Actuators with Exteroceptive Sensors 
    Bartholdt, Max; Wiese, Mats; Schappler, Moritz; Spindeldreier, Svenja; Raatz, Annika (Piscataway, NJ : IEEE, 2021-12-16)
    Soft material robotics is a rather young research field in the robotics and material science communities. A popular design is the soft pneumatic actuator (SPA) which, if connected serially, becomes a highly compliant ...
  • Quantum noise limits to simultaneous quadrature amplitude and phase stabilization of solid-state lasers 
    Huntington, E.H.; Harb, C.C.; Heurs, Michèle; Ralph, T.C. (College Park, MD : American Physical Society, 2007)
    A quantum mechanical model is formulated to describe the coupling between pump intensity noise and laser frequency noise in a solid-state laser. The model allows us to investigate the limiting effects of closed-loop ...
  • Roughness and stability of silicon on insulator surfaces 
    Czubanowski, M.; Tegenkamp, Christoph; Ernst, W.; Pfnür, Herbert (College Park, MD : American Institute of Physics, 2004)
    The feasibility of low temperature processes (below 800°C), to obtain atomically clean and smooth surfaces on (100) oriented silicon on insulator material (SOI) with negligible variation of the top Si film thickness was ...
  • Shape memory alloys: Micromechanical modeling and numerical analysis of structures 
    Levitas, V.I.; Idesman, A.V.; Stein, E. (London : SAGE Publications Ltd., 1999)
    Multiscale modeling of structures made from shape memory alloys (SMA) is presented. Starting with consideration of a single transformation event at the micro-level and averaging over the representative volume, micromecha ...
  • A similarity theory of locally homogeneous and isotropic turbulence generated by a Smagorinsky-type LES 
    Muschinski, Andreas (Cambridge : Cambridge University Press, 1996)
    A Kolmogorov-type similarity theory of locally homogeneous and isotropic turbulence generated by a Smagorinsky-type large-eddy simulation (LES) at very large LES Reynolds numbers is developed and discussed. The underlying ...
  • A simple micromechanical model for pseudoelastic behavior of CuZnAl alloy 
    Levitas, V.I.; Idesman, A.V.; Stein, E.; Spielfeld, J.; Hornbogen, E. (London : SAGE Publications Ltd., 1998)
    A simple micromechanical model for thermoelastic martensitic phase transitions (PT) is developed. It is deduced from the local description of PT in transforming particles with subsequent usage of average procedure, based ...
  • Spontaneous symmetry breaking in spinor Bose-Einstein condensates 
    Scherer, Manuel; Lücke, Bernd; Peise, Jan; Topic, Oliver; Gebreyesus, Garu; Deuretzbacher, Frank; Ertmer, Wolfgang; Santos, Luis; Klempt, Carsten; Arlt, Jan J. (College Park, MD : American Physical Society, 2013)
    We present an analytical model for the theoretical analysis of spin dynamics and spontaneous symmetry breaking in a spinor Bose-Einstein condensate (BEC). This allows for an excellent intuitive understanding of the processes ...
  • Thermomechanical deformations in photovoltaic laminates 
    Paggi, M.; Kajari-Schröder, S.; Eitner, U. (London : SAGE Publications Ltd., 2011)
    Recent experimental results based on the digital image correlation technique (U. Eitner, M. Köntges, R. Brendel, Solar Energy Mater. Solar Cells, 2010, 94, 1346-1351) show that the gap between solar cells embedded into a ...
  • Time Constrained Verification of Analog Circuits using Model-Checking Algorithms 
    Grabowski, Darius; Platte, Daniel; Hedrich, Lars; Barke, Erich (Amsterdam : Elsevier BV, 2006)
    In this contribution we present algorithms for model checking of analog circuits enabling the specification of time constraints. Furthermore, a methodology for defining time-based specifications is introduced. An already ...