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Showing 1 to 20 of 79 for “"coupled systems"”.
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Ferromagnetic dynamics in coupled systems
In this work, ferromagnetic thin films coupled strongly to other physical subsystems (magnetic or otherwise) are studied, and the effect this coupling has on their static and dynamic properties is investigated in order to understand both the ferromagnets themselves, and the systems they are coupled …
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Complex Plasmonic Nanostructures: Symmetry Breaking and Coupled Systems
… complex nanostructures. For example, coupled nanostructures of two or more nanoparticles are used extensively in plasmon-enhanced spectroscopy techniques because they exhibit extremely large optical field enhancements. Asymmetric nanostructures, such as nanocups (metallic semishells), …
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Design and analysis of transient nonlinear coupled systems
… design and analysis of transient nonlinear coupled problems are presented. This class of problems includes systems with history dependent material response, e.g. plasticity. The traditional finite element analysis is combined with sensitivity analysis and numerical optimization to obtain a …
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Distributed Path Pascal: A Language for Programming Coupled Systems
… to develop programs that utilize distributed systems and their resources. It has abstractions and new language constructs for programming communicating computer systems. Distributed Path Pascal introduces the remote object as an appropriate mechanism for modularity and distribution. The remote …
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Vibration localization and statistical energy analysis in coupled systems
… perturbation parameter is conducted on coupled systems. The analysis of a coupled pendulums system results in the analytical expression of the natural frequencies of the system. The response of the system for harmonic excitation and random input is developed. Two single Euler-Bemouilli …
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Measurement-Based Performance Models of Numerical Problems on Loosely-Coupled Systems
Multiprocessor systems offer the potential of significant performance improvements over uniprocessors. Performance evaluation is necessary to effectively utilize these systems and to uncover and remove performance bottlenecks, which prevent the realization of their performance potential. …
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Strongly coupled systems : from quantum antiferromagnets to unified models for superconductors
… simulate and discuss classical antiferromagnetic systems with simultaneous SO(M) and SO(N) symmetries, which have been proposed as models for magnets in external fields and for electronic and color superconductors. After detailing the algorithms which were employed, I present results for the …
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Nonlinear Nonlocal Parabolic-Hyperbolic Coupled Systems for Cancer Cell Movement and Aggregation
… the dynamics of cancer cells and TGF-β dynamics, coupled with nonlinear ordinary differential equations describing the ECM and integrins dynamics. We study our models analytically and numerically, and we demostrate a wide range of spatiotemporal patterns. We investigate the effect of mutation and …
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Variational multiscale method for coupled systems: free-surface flows and stratified turbulence
… a robust numerical method for the class of coupled systems comprised of multiple interacting partial differential equations (PDE). Particular emphasis is placed on incompressible Navier-Stokes equations that are coupled with a hyperbolic scalar PDE. The method is derived based on the …
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Power-Hardware-In-The-Loop (Phil) Considerations and Implementation Methods For Electrically Coupled Systems
… a system are modeled in software and naturally coupled with actual hardware components with real power virtually exchanged at the interface. This allows for highly realistic simulations to be performed without the need for physical prototypes of the entire system, reducing the cost, risk, and …
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Stability analysis and control of nonlinear, symmetrically coupled systems, with applications to paralleled power converters
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.
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Symbiosis of Coupled Systems of Fusion Deuterium-Helium 3 Satellites and Tritium and Helium 3 Generators
Made available in DSpace on 2017-07-06T18:42:25Z (GMT). No. of bitstreams: 3 Behtash_Saman_MS.pdf: 30746693 bytes, checksum: 90fe3473e23aa8279be6ecb7090f49c7 (MD5) Behtash_Saman_MS_ABS.pdf: 659648 bytes, checksum: 13cedd76d6d8807a3c7c67aaf2957c09 (MD5) license.txt: 4813 bytes, checksum: …
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Cavity Plasmonics - Exploring narrow-gap plasmonic coupled systems to boost, localize and exploit nanometric light -matter interaction
… in the polarization signature of narrow gap systems (<1 nm) is directly related to the asymmetry and orientation of the plasmonic cavity, revealing its orientation and asymmetry which is otherwise inaccessible for conventional imaging techniques. Furthermore, laser irradiation is employed to …
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Human Dimensions of Young Forest Conservation Programs: Effects of Outreach, Post-Program Management, and a Coupled Systems Perspective
… management intentions. Finally, we applied a coupled human and natural systems lens to investigate the linkage between wildlife outcomes, landowner perceptions, and continued young forest management. Our results demonstrate how in-person outreach can shape positive conservation experiences and …
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Design and calibration of a 2-axis haptic force feedback joystick
… force feedback joysticks enables mechanically coupled systems to be recreated by electronically coupled systems. A study of haptic force feedback systems was performed. A four-arm joint mechanism was designed and developed to enable multi-axis haptic force feedback. The joint mechanism was …
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A Middleware for Large-scale Simulation Systems & Resource Management
Socially coupled systems are comprised of inter-dependent social, organizational, economic, infrastructure and physical networks. Today's urban regions serve as an excellent example of such systems. People and institutions confront the implications of the increasing scale of information becoming …
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Improved Reduced Order Modeling Strategies for Coupled and Parametric Systems
… Orthogonal Decomposition to model parametric and coupled systems. First, Proper Orthogonal Decomposition and its properties are introduced as well as how to numerically compute the decomposition. Next, a test case was used to show how well POD can be used to simulate and control a system. Finally, …
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A Software Framework for Implementation and Evaluation of Co-Simulation Algorithms
In this thesis, simulation of coupled dynamic models, denoted sub-systems, is analyzed and described in a co-simulation context. This means that the respective coupled systems contain their own internal integrator, hidden from the coupling interface. Co-Simulation is an interesting and active …
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Strong coupling between microwave photons and nanomagnet magnons
Coupled microwave photon-magnon hybrid systems offer promising applications by harnessing various magnon physics. At present, in order to realize high coupling strength between the two subsystems, bulky ferromagnetic insulators with large spin numbers are utilized, which limit their potential …
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Semilinear Systems of Weakly Coupled Damped Waves
… these results to the Cauchy problem for weakly coupled systems of semilinear effectively damped waves with respect to the defined classes of regularity for different power nonlinearities. We also presented blow-up results for semi-linear systems with weakly coupled damped waves.
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