Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 171 for “"system modeling"”.
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Multidimensional dynamic compression system modeling
… stage-by-stage dynamic compression system model was developed and validated. The improved method was then applied to two-dimensional post-stall models. The improvement in robustness was achieved by modeling the governing equations with upwind differencing and use of implicit time …
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System modeling and modification via modal analysis
… is developed for experimentally determining the system parameters of a structure that is suitable for implementation in microprocessor-based systems. It uses single degree-of-freedom models to describe a multi-degree-of-freedom system. The system is assumed to be describable by a linear, …
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Transportation system modeling and applications in earthquake engineering
… one class of major civil infrastructure systems that is a critical backbone of modern society. Physical damage and functional loss to transportation infrastructure systems not only hinder everyday societal and commercial activities, but also impair post-disaster response and recovery, …
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Thermoelectric device characterization and solar thermoelectric system modeling
… used to improve the overall efficiency of many systems including vehicle waste heat, solar thermal, HVAC, industrial waste heat, and remote power for sensor applications. For thermoelectric generators to be successful, research progress at the device level must be made to validate materials and …
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Discrete event system modeling using SysML and model transformation
… is to introduce a unified framework for modeling and simulating discrete event logistics systems (DELS) by using a formal language, the System Modeling Language (SysML), for conceptual modeling and a corresponding methodology for translating the conceptual model into a simulation model. …
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Dynamical system modeling of a micro gas turbine engine
… turbine inlet temperature trend, the microengine system behaves like a second-order system with low damping and poor linear properties. This increases the possibility of surge, over-temperature and over-speed. This also implies a potentially complex control system. The surge margin at the design …
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System modeling and control studies of flutter in turbomachinery
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1997.
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Applications of axial and radial compressor dynamic system modeling
… related to axial and centrifugal compression systems. The projects are related by the underlying dynamic system modeling approach that is common in all of them. Two types of models are introduced, suitable for modeling the dynamic behavior of axial and centrifugal compression systems: a …
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Multireference power system modeling and multiphase load flow analysis
… of interphase coupling in a multiphase power system become important in the presence of network imbalances and unbalanced phase loadings. In grounded-wye systems, currents that flow in the earth can have significant effects on the system's behavior. Both these effects must be considered in an …
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ARC-class tokamaks: Preliminary design, system modeling and safety assessment
L'abstract è presente nell'allegato / the abstract is in the attachment
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Integrated Energy System Modeling For Supporting Energy Systems Planning Under Uncertainty
… and satisfactory quality in regional energy systems requires the formulation of a model to allocate energy resources and to properly develop renewable energy sources. In addition, the contradictions and interactions of economic development and environmental sustainability are significant …
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Solar thermal collector system modeling and testing for novel solar cooker
… nitrate). This thesis involved research, modeling, and experimentation for the solar collection system of the cooker. This thesis looked at prior research on glazing, Fresnel lenses, and absorber surface treatments to identify and evaluate elements for use in the collection system. …
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Interoperable Multimodal Travel Guide System: Modeling and Implementation. A Canonical Model Approach
… between the MTGS and its participating systems (information sources) as well as between the MTGS and its clients. This study confirms not only the feasibility of the proposed canonical model approach but also its effectiveness compared to the existing approaches to information …
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Dynamic system modeling and decision support for grow-finish swine barn operation
… is essential to evaluate the swine production system. The integrated effect of swine growth and swine barn management is difficult to investigate because of their complex relationships. To estimate the integrated effect between swine growth and swine barn management, a dynamic modeling approach …
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Existence of patchiness in constricted lungs : from experiments to complex system modeling
… of medical imaging technology and computational modeling providing a subjectspecific, noninvasive assessment of respiratory structure and function in vivo. This thesis features several attempts to study mechanisms of bronchoconstriction and interdependence between respiratory structure and …
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Integrated Business and Technical System Modeling of Rail Projects with Uncertainty Analysis
… high-speed railways, which are highly integrated systems. This research uses the Northeast Corridor SCMAGLEV project, a Japanese high speed railway system overseas cooperation project with the United States planned and promoted as a model, to consider what type of hurdles exist and options & …
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A design optimization framework for enhanced compressor stability using dynamic system modeling
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2003.
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