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 87 for “"Model experiments"”.
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Graphical analysis of hidden Markov model experiments
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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Structural-model experiments revealing bifurcation, instability and localization
Small scale experiments are invented to analyze several aspects of instability and bifurcation occurring in structures and within materials. Photoelasticity is employed to analyze the localization of stress in ordered granular materials and near stiff and thin inclusions embedded in an elastic …
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Thermodynamic calculations and model experiments on thin intergranular amorphous films in ceramics
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1997.
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Cold air outbreaks over the Gulf Stream and implications for the North Atlantic Ocean
… study uses an observational data analysis and model experiments with CESM’s Parallel Ocean Processor to examine CAO intensive winters alongside contrasting years of winter warm events to quantify impacts on the North Atlantic Ocean, including the subpolar seas. The main findings of this study …
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Representation learning of recipes
… joint vector space using a novel neural network model. Experiments on cross-modal retrieval and vector space arithmetic demonstrate the utility and generalizability of both the per-component and joint embeddings.
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Soil-pipeline interaction in unsaturated soils
… bonds. A recent series of large-scale physical model experiments at the Pipeline Engineering Research Laboratory (PERL) of Tokyo Gas, Japan show a higher peak load under unsaturated conditions compared to dry conditions. In contrast, recent experiments performed at Cornell University (CU) show …
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The Prediction and Occurrence of Chimney Subsidence in Southwestern Pennsylvania
… such occurrences. Through conducting sand model experiments and through the collection of a chimney subsidence incident database, such an equation was derived, and verified using actual field data.
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Combined Modeling and Experimental Validation of Boiling Curve and Critical Heat Flux
To verify this model, experiments are conducted for a range of conditions. A highspeed, high-fidelity imaging system is employed to quantitatively investigate the bubble motion. Predictions are compared with experimental measurements in this study as well as data available in the literature, with …
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Geometry-driven filamentary structures : elastic gridshells, weaves, clasps, and knots
… numerical simulations, and precision model experiments using scale-invariance and advanced imaging techniques (e.g., 3D laser scanning, and X-ray computed tomography). First, we study the shape and the mechanical response of elastic gridshells, the three-dimensional structure of which …
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Understanding the role of stochastic atmospheric forcing in tropical Pacific decadal variability and ENSO modulation
… To answer this question, a suite of climate model experiments is conducted with small time-invariant surface heat flux anomalies associated with the leading atmospheric modes in the extratropical South and North Pacific. The results show that subtropical ocean-atmosphere anomalies driven by …
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Dynamical and radiative processes in the Upper Troposphere/Lower Stratosphere
… of the stratosphere on the UTLS region. Model experiments illustrate that the TIL can arise as a result of the dynamics and the wave driving leads to an upwelling structure that results in a TIL. The maximum value and the shape of the TIL peak vary considerable depending on how the …
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Deposition Thickness Modeling and Parameter Identification for Spray Assisted Vacuum Filtration Process in Additive Manufacturing
… layers must be precisely controlled. A thickness model of filter cakes created through a spray assisted vacuum filtration is presented in this paper, to enable the development of advanced thickness controllers. The mass transfer dynamics in the spray atomization and vacuum filtration are studied …
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Influence of forced convection on sessile droplet evaporation
… primarily use a vapour-diffusion limited model. Experiments using an open-loop wind tunnel and computer-vision based control system were conducted to measure evaporation rates of continuously-fed sessile droplets under forced convection. Results demonstrated increases to the evaporation …
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Low-Frequency Variability in the Stratosphere
… a dry, nonlinear, primitive equation spectral model with no externally forced variability and with a realistic time mean state, and we have observed low frequency variability (LFV) in the stratosphere with timescales on the order of hundreds of days. Time lagged correlations have revealed that …
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Conceptual design of a 30 ft. self-propelled monoform model
… the hull. Two hull forms were. considered. The model was scaled to a 2000-ton prototype to obtain the necessary geometry for a full scale vessel. Two computer programs were developed and are outlined together with the derived formulae used in them. Stability curves help establish the design's …
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Techniques of Geophysical Prospection as applied to Near Surface Structure Determination
… The proposed solution is investigated by model experiments and is extended, with partial success, to include the responses from features of an arbitary shape. The interpretation of field data, by the use of a digital computer is studied and is applied to some of the survey examples.
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Localization of deformation in thin shells under indentation
… curvature. Juxtaposing results from precision model experiments and Finite Element simulations enables the exploration of the frictional nature of the shell-indenter contact. The numerics also allow for a characterization of the relative properties of strain energy focusing, at the different …
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Interactions between clouds and atmospheric circulation in the extratropics
In climate models, the simulation of clouds is known to be particularly problematic, leading to important biases in the climatological energy balance on regional scales, as well as to large uncertainties in the future amount of warming in response to greenhouse gas increase. This thesis explores …
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The use of adjoint models for determining the sensitivity of integral quantities in an eddy resolving Oean General Circulation Model
Adjoint models calculate the exact sensitivity of an output function of a model to infinitesimal perturbations in the forcing or initial conditions. In eddy resolving ocean models the presence of chaotic eddies is expected to lead to sensitivities to infinitesimal perturbations that are very …
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Molecular Study of the B19 (Human) Pathogenic Parvovirus
… sites and containing introns of differing sizes. Model experiments were performed to test the validity of two dimensional exonuclease VII analysis of overlapping transcripts. The transcripts were hybridized with a DNA probe and digested with exonuclease VII. Single bands were resolved into …
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