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.
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Showing 1 to 20 of 32 for “"Property Estimation"”.
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Real-time mass property estimation
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2000.
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Improving thermodynamic property estimation through volume translation
… are the only option available. Improving the property estimation accuracy of EOSs through volume translation is an attractive approach because mathematical translations can be layered onto currently implemented models without altering the underlying (untranslated) equation. However, …
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Formation property estimation from guided waves in a borehole
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric and Planetary Sciences, 1987.
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Exact property estimation from diffusion Monte Carlo with minimal stochastic reconfiguration /
Our objective is to develop a diffusion Monte Carlo (DMC) algorithm to estimate the exact expectation values, ($o|^|^o), of multiplicative operators, such as polarizabilities and high-order hyperpolarizabilities, for isolated atoms and molecules. The existing forward-walking pure diffusion Monte …
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A unified approach to physical property estimation using multivariate statistical techniques
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1984.
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HYDROGEOLOGIC PROPERTY ESTIMATION IN PLATE BOUNDARY OBSERVATORY BOREHOLES USING TIDAL RESPONSE ANALYSIS
Understanding hydrogeologic properties that control fluid flow and pressure distribution is important in characterizing earthquake and deformation processes because of the influence pore pressures have on effective stress. Here, we utilize borehole pressure changes in response to Earth tides to …
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Mass property estimation with jet failure identification for control of asymmetrical satellites
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1984.
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Uncalibrated, absolute property estimation and measurement optimization for conducting and magnetic media using imposed [omega]-k magnetometry
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1991.
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Robust Adaptive Rigid Body State and Mass Property Estimation Via Unscented Kalman Filter on TSE(3) with Process Noise Estimation
<p>Mass property estimation, including mass, center of mass, and moment of inertia, is a crucial yet challenging problem in spacecraft autonomy and astrodynamics. Knowledge of mass properties of a spacecraft is essential for future astronautical missions, as changes in the mass properties of a …
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Interdigital dielectrometry based detection and identification of dangerous materials for security applications
… mathematical models for material property estimation. The studies show that dangerous materials hidden in the sole of a shoe could be detected and identified if they lie within the penetration depth of the sensor and if they are sufficiently different in their complex dielectric …
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Interdigital dielectrometry sensor design and parameter estimation algorithms for non-destructive materials evaluation
… is to develop instrumentation and parameter estimation algorithms for nondestructive measurement of non-homogeneous material property profiles with fringing electric field dielectrometry sensors. The instrumentation includes interdigital sensors and sensor arrays, other types of fringing …
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Average Dielectric Property Analysis of Non-Uniform Structures: Tissue Phantom Development, Ultra-Wideband Transmission Measurements, and Signal Processing Techniques
… materials. In addition to testing the average property algorithms, these phantoms are well suited to testing a variety of microwave imaging methods. Complex breast phantoms were used to test the average dielectric property estimation technique, and accurate results were found. This technique …
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Astrometric and Photometric Data Fusion in Machine Learning-Based Characterization of Resident Space Objects
… space object (RSO) physical and dynamical property estimation (characterization). This topic is explored by leveraging both simulated and observational data of RSOs in conjunction with physics- and machine learning-based (ML) models to illustrate novel characterization methods for SSA. This …
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Experimental determination of the thermal properties of multi-layered surfaces
… inexpensive, computationally simple thermal property estimation for the purpose of material identification. In this specific case, thermal conductivity and diffusivity were the parameters of interest. Towards this end, an experimental apparatus was constructed which applied a thermal load to …
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Machine Learning for Structure-Agnostic Chemical Analysis from Chromatographic Data
… or spectral references, limiting identification, property estimation, and quantitative analysis. This thesis investigates how machine learning (ML) can extract chemically meaningful information directly from chromatographic data to overcome these limitations. First, ML models are developed to …
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Adaptive Scheduling in Heterogeneous Distributed Computing Systems
… address this dynamism. To address this, a property estimation method is presented, which utilizes a k-Nearest Neighbours algorithm, a smoothed average and an analytical benchmark. These estimated properties are then used by two different scheduling techniques, which make less restrictive …
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Progettazione di un device di imaging tomografico, basato su principio impedenziometrico, per la valutazione di cicli cardio-respiratori in atleti
… of the electrical interaction. The process of property estimation, called inverse problem, is highly nonlinear, ill-conditioned, and ill-posed. Reconstruction of the electrical properties distribution is an under-determined problem requiring a regularization method. The objective of this thesis …
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Imaging the local mechanical properties of the brain with high-resolution magnetic resonance elastography
… inverse problem associated with biomechanical property estimation. Increasing the clinical utility of MRE for assessing neurological disorders requires methodologies to obtain local estimates of brain tissue mechanical properties. The research presented in this dissertation focuses on the …
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Quantitative estimates of mechanical properties from in vivo tumors of rodent animals
… might lead to variation in tissue mechanical property estimation are discussed, including ECM composition, rheological model, nonlinear wave propagation as well as boundary reflection. Addressing these issues is of great importance in enhancing modulus measurement accuracy and lesion image …
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A Method for Characterizing the Properties of Industrial Foams
… properties. Ten blind cases were considered and property predictions were made for each. The predicted properties were within approximately 10% of the actual values, and on average the errors were approximately 4%. Predictions of the reduced scattering coefficient were all within approximately 5% …
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