Browsing by Title
Now showing items 1079010809 of 17619

"Nonlinear Dynamic Structures"
(Econometrica, 199307) 
Nonlinear Dynamics and Network Properties in Granular Materials under Shear
(2013)Granular materials are hard to understand due to their discrete and athermal nature. The mechanical response of a granular packing under external deformations, although highly relevant in industrial processes, is still ... 
Nonlinear Dynamics of Discrete and Continuous Mechanical Systems with Snapthrough Instabilities
(2012)The primary focus of this dissertation is the characterization of snapthrough buckling of discrete and continuous systems. Snapthrough buckling occurs as the consequence of two factors, first the destabilization, or more ... 
Nonlinear Dynamics of Energy Harvesting Ocean Buoys
(2019)This dissertation looks to investigate different ways that the performance of ocean energy harvesting buoys can be improved by intentionally inserting nonlinearities into the system. The goal is to maximize the amount of ... 
Nonlinear Electroelastic Dynamical Systems for Inertial Power Generation
(2011)Within the past decade, advances in smallscale electronics have reduced power consumption requirements such that mechanisms for harnessing ambient kinetic energy for selfsustenance are a viable technology. Such devices, ... 
Nonlinear Harmonic Forms and an Indefinite Bochner Formula
(20170601)We introduce the study of nonlinear harmonic forms. These are forms which minimize the $L_2$ energy in a cohomology class subject to a nonlinear constraint. In this note, we include only motivations and the most basic existence ... 
Nonlinear longrange plasmonic waveguides
(Physical Review A  Atomic, Molecular, and Optical Physics, 20100913)We report on plasmonic waveguides made of a thin metal stripe surrounded on one or both sides by a Kerr nonlinear medium. Using an iterative numerical method, we investigate the stationary longrange plasmons that exist ... 
Nonlinear oscillator metamaterial model: numerical and experimental verification.
(Opt Express, 20110425)We verify numerically and experimentally the accuracy of an analytical model used to derive the effective nonlinear susceptibilities of a varactorloaded split ring resonator (VLSRR) magnetic medium. For the numerical validation, ... 
Nonlinear parameter retrieval from three and fourwave mixing in metamaterials
(Physical Review E  Statistical, Nonlinear, and Soft Matter Physics, 20100928)We present a generalized nonlinear susceptibility retrieval method for metamaterials based on transfer matrices and valid in the nondepleted pump approximation. We construct a general formalism to describe the transfer matrix ... 
Nonlinear piezoelectricity in electroelastic energy harvesters: Modeling and experimental identification
(Journal of Applied Physics, 20101001)We propose and experimentally validate a firstprinciples based model for the nonlinear piezoelectric response of an electroelastic energy harvester. The analysis herein highlights the importance of modeling inherent ... 
Nonlinear Prediction in Credit Forecasting and Cloud Computing Deployment Optimization
(2015)This thesis presents data analysis and methodology for two prediction problems. The first problem is forecasting midlife credit ratings from personality information collected during early adulthood. The second problem is ... 
Nonorientable surfaces in homology cobordisms
(Geometry & Topology, 20150227) 
Nonparametric Bayes Analysis of Social Science Data
(2015)Social science data often contain complex characteristics that standard statistical methods fail to capture. Social surveys assign many questions to respondents, which often consist of mixedscale variables. Each of the ... 
Nonparametric Bayes Conditional Distribution Modeling With Variable Selection.
(J Am Stat Assoc, 20091201)This article considers a methodology for flexibly characterizing the relationship between a response and multiple predictors. Goals are (1) to estimate the conditional response distribution addressing the distributional ... 
Nonparametric Bayes for Big Data
(2014)Classical asymptotic theory deals with models in which the sample size $n$ goes to infinity with the number of parameters $p$ being fixed. However, rapid advancement of technology has empowered today's scientists to collect ... 
Nonparametric Bayes Modeling of Populations of Networks
(Journal of the American Statistical Association, 20170627)© 2017 American Statistical Association Replicated network data are increasingly available in many research fields. For example, in connectomic applications, interconnections among brain regions are collected for each patient ... 
Nonparametric Bayes Models for HighDimensional and Sparse Data
(2010)Bayesian nonparametric methods are useful for modeling data without having to define the complexity of the entire model a priori, but rather allowing for this complexity determined by the data. We consider novel nonparametric ... 
Nonparametric Bayesian Context Learning for Buried Threat Detection
(2012)This dissertation addresses the problem of detecting buried explosive threats (i.e., landmines and improvised explosive devices) with groundpenetrating radar (GPR) and hyperspectral imaging (HSI) across widelyvarying ... 
Nonparametric Bayesian Dictionary Learning and Count and Mixture Modeling
(2013)Analyzing the everincreasing data of unprecedented scale, dimensionality, diversity, and complexity poses considerable challenges to conventional approaches of statistical modeling. Bayesian nonparametrics constitute a ... 
Nonparametric Bayesian Methods for Multiple Imputation of Large Scale Incomplete Categorical Data in Panel Studies
(2012)The thesis develops nonparametric Bayesian models to handle incomplete categorical variables in data sets with high dimension using the framework of multiple imputation. It presents methods for ignorable missing data in ...