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 504 for “"Parameterization"”.
-
Ocean color modeling: Parameterization and interpretation
<p>The ocean color as observed near the water surface is determined mainly by dissolved and particulate substances, known as "optically-active constituents," in the upper water column. The goal of ocean color modeling is to interpret an ocean color spectrum quantitatively to estimate the suite of …
-
Quadrilateral Remeshing and Efficient Surface Parameterization
… we deal explicitly with the problem of surface parameterization. We present two complementary methods for automatically improving mesh parameterization, and demonstrate that they provide a desirable combination of efficiency and quality. First, we describe a new iterative method for constructing …
-
Design optimization using CAD parameterization through CAPRI
Design optimization is one of the many areas of Computational Engineering that is directly applicable to almost any engineering endeavor. The design cycle is a multi-step process, beginning with a Computer Aided Design (CAD) model and ending with an optimized version of that model relative to some …
-
Aerodynamic design optimization using flow feature parameterization
… design parameters required for optimization. The parameterization of flow features is coupled with inverse design, in order to recover the corresponding geometry. While an expensive analysis code is used in evaluating design performance, computational cost is reduced by using a low-fidelity code …
-
Volumetric mesh parameterization to a canonical template
We present a volumetric mesh-based algorithm for mapping the placenta to a canonical template to enable effective visualization of local anatomy and function. Monitoring placental function in vivo promises to support pregnancy assessment and to improve care outcomes. We aim to alleviate …
-
Ability Estimation Under Different Item Parameterization and Scoring Models
… investigated the effect of scoring format, item parameterization, threshold configuration, and prior ability distribution on the accuracy of ability estimation given various IRT models. Item response data on 30 items from 1,000 examinees was simulated using known item parameters and ability …
-
Constrained parameterization with applications to graphics and image processing.
Surface parameterization is to establish a transformation that maps the points on a surface to a specified parametric domain. It has been widely applied to computer graphics and image processing fields. The challenging issue is that the usual positional constraints always result in triangle …
-
Spectral correlation tests of an eddy heat flux parameterization
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1979.
-
Surrogate-based optimization using multifidelity models with variable parameterization
… cost of numerical optimization of variableparameterization problems, that is, problems for which the low-fidelity model uses a different set of design variables from the high-fidelity model.
-
Foundations of Machine Learning: Over-parameterization and Feature Learning
… driving the success of neural networks: over-parameterization and feature learning. We leverage these principles to design models with improved performance and interpretability on various computer vision and biomedical applications. We begin by discussing the benefits of over-parameterization, …
-
Reverse parameterization of B-spline surfaces for data transfer
This thesis presents the algorithms and methods for transferring B-spline surface data from a final design CAD tool to a parameter based conceptual design CAD tool. Both codes store data in different ways, requiring a technique referred to as reverse parameteriation to achieve data transfer. …
-
Automated multi-stage geometry parameterization of internal fluid flow applications
… for the most effective method for the geometric parameterization of many internal fluid flow applications is ongoing. This thesis focuses on providing a general purpose automated parameterization strategy for use in design optimization. Commercial Computer-Aided Design (CAD) software, …
-
A time-varying subsidence parameterization for the atmospheric boundary layer
This study examines the effect of a time-varying parameterization for subsidence in the atmospheric boundary layer (ABL) on a one-dimensional coupled land-atmosphere model. Measurements of large-scale divergence in the ABL are scarce and often marred by error, providing the motivation to model this …
-
Development of Kinetic Parameterization Methods for Nitrifying Bacteria using Respirometry
Understanding how nitrifiers react when exposed to low DO conditions could provide a greater understanding of low DO operations in full-scale biological wastewater treatment. Previous methods to observe nitrifier oxygen kinetics do exist in literature, however they are inefficient and labor …
-
A Parameterization Study of Short Read Assembly Using the Velvet Assembler
<p>In this study, we examine approaches to the problem of assembling large, contiguous sections of genetic code from short reads generated from laboratory techniques. We explore the Eulerian Path approach in detail, utilizing a de Bruijn Graph, and demonstrate current software technologies and …
-
Analytic Parameterization of Stabilizing Controllers for the Moore-Greitzer Compressor Model
This work presents an extension, simplification and application of a design procedure for dynamic output feedback design for systems with nonlinearities satisfying quadratic constraints (QC). Our method was motivated by the challenges of output feedback control design for the three-state …
-
Effects of fault failure parameterization and bulk rheology on earthquake rupture
… We study the effect of different failure parameterizations on the earthquake cycle characteristics, earthquake nucleation and dynamic rupture propagation. We start with simplified spring-slider models to understand the stability, slip regimes, and characteristics of the different phases of …
-
Muscle modelling and parameterization for use in control via electrical stimulation
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
Page 1 of 26