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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 237 for “"Structural models"”.

  1. Identification of linear structural models

    Creamer, Nelson GlennVirginia Polytechnic Institute and State University1987

    … Typical problems associated with existing structural model identification methods are: (i) non-unique solutions may be obtained when utilizing only free-response measurements (unless some parameters are fixed at their nominal values), (ii) convergence may be difficult to achieve if the …

    vt Repository record

  2. Spatial Nyquist fidelity method for structural models of opto-mechanical systems

    Howell, Deborah Jane, 1979-Massachusetts Institute of Technology2007

    … phases. The method of building these simulation models is often based on engineering experience with older, potentially dissimilar systems. A method is needed to measure the fidelity of simulation models so early design decisions are made based on appropriate modeling techniques. Previously, …

    mit Repository record

  3. Bayesian estimation of restricted latent class models: Extending priors, link functions, and structural models

    Balamuta, James JosephUniversity of Illinois at Urbana-Champaign2022

    Restricted latent class models (RLCMs) provide a pivotal framework for supporting diagnostic research that enhances human development and opportunities. In earlier research, the focus was on confirmatory methods that required a pre-specified expert-attribute mapping known as a Q matrix. Recent …

    uiuc Repository record

  4. Design and implementation of optimal controllers for intelligent structures using infinite order structural models

    Luis, Javier deMassachusetts Institute of Technology1989

    Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1989.

    mit Repository record

  5. A new electric strain gauge and its application to structural models subjected to static loads.

    Lee, Shih-yingMassachusetts Institute of Technology1945

    Massachusetts Institute of Technology. Dept. of Civil Engineering. Thesis. 1945. Sc.D.

    mit Repository record

  6. School choice, competition and ethnic segregation in Lancashire : evidence from structural models of two-sided matching

    Weldon, Matthew Philip, Titman, Andrew, Sherlock, ChrisLancaster University2017

    … this limitation of the data, the thesis adopts a structural game-theoretic model of two-sided matchings, and develops an innovative method to estimate the parameters of the random utility model. In developing the method the thesis considers the inferential properties – notably identification and …

    lancaster Repository record

  7. Novel Finite Element Techniques to Expedite the Implementation and Computational Time of 3D Structural Models Showcased Through Space Habitat

    Shahriar, Adnan2023

    … numerical tools that enable the analysis of structural systems with reduced degrees of freedom within a system of systems (SOS) framework. First, a generalized methodology was developed to reduce the implementation time associated with formulating arbitrary finite elements capable of …

    tdl Repository record

  8. Structural models for the pricing of corporate securities and financial synergies. Applications with stochastic processes including arithmetic Brownian motion.

    Arikan, Ali F.University of Bradford2012

    Mergers are the combining of two or more firms to create synergies. These synergies may come from various sources such as operational synergies come from economies of scale or financial synergies come from increased value of securities of the firm. There are vast amount of studies analysing …

    bradford Repository record

  9. COVARIANCE STRUCTURAL MODELS FOR MATHEMATICS ACHIEVEMENT AND PARTICIPATION: AN INVESTIGATION OF SEX DIFFERENCES AT THE LEVEL OF COLLEGE CALCULUS USING FACTORIAL MODELING

    DICK, THOMAS PATRICK

    … purpose of this study was to develop covariance structural models that would explain, in terms of orthogonal latent variables, the correlations observed among mathematics achievement and participation measures and related cognitive and affective variables. A random sample of college calculus …

    unh-thes Repository record

  10. Synthesis and stabilities of mononuclear iron (II) dicarbonyls derived from neutral NNS ligands : structural models of the apo-active site of mono-iron (Hmd) hydrogenase

    Thomas Muthiah, Keren ArunothayamThe University of Texas at Austin2014

    Herein is described the syntheses and characterization of iron dicarbonyl complexes derived from tridentate ortho-substituted Schiff base pyridine/thioether ligands ([subscript R]NNS) and (Fe(CO)₄(Br)₂). Two general synthetic routes are reported for the isolation of such iron carbonyls. First, …

    texas Repository record

  11. Impact Of Time-Varying And Time-Invariant Measures Of Adherence To Secondary Prevention Therapies Post-Acute Myocardial Infarction: An Application Of Marginal Structural Models (MSMS)

    Lokhandwala, Tasneem Taher2019

    … and (ii) mortality using various mathematical models and statistical techniques was compared. Time dependent confounding was accounted for by using marginal structural models (MSMs). A longitudinal cohort observational study design was employed using the retrospective Medicare 5% random …

    mississippi Repository record

  12. The impact of risk and time preferences on smoking behaviour in the context of a contingency management programme

    Carnegie, TyrynSchool of Economics2021

    … two general approaches: standard statistical models and structural models. In the structural models, maximum likelihood estimation is used to estimate time preference parameters jointly with risk preference parameters. Results are broadly consistent across the two approaches. With respect to …

    cape-town Repository record

  13. Active vibration control of composite structures

    Chang, Min-YungVirginia Tech1990

    … uncontrolled responses of classical and refined structural models, the influence of several important composite structure properties which are not included in the classical structural model is revealed. The modal control approach is employed to suppress the structural vibration. In modal control, …

    vt Repository record

  14. Numerical simulations of subsonic aeroelastic behavior and flutter suppression by active control

    Luton, J. AlanVirginia Tech1991

    … The scheme allows nonlinear aerodynamic and structural models to be used and subcritical, critical, and supercritical aeroelastic behavior may be modeled without restrictions to small disturbances or periodic motions. A vortex-lattice method is used to model the aerodynamics. This method …

    vt Repository record

  15. A performance analysis of the hi-plan structural apparatus

    Kashi, Mohsen Gholam-RezaVirginia Polytechnic Institute and State University1985

    … and specimens are also vital tools for teaching structural mechanics. As such, the Department of Civil Engineering at Virginia Tech has acquired a new apparatus for use as an educational demonstration tool in the area of structural mechanics. This work presents the results of a detailed study on …

    vt Repository record

  16. Inversion of probabilistic models of structures using measured transfer functions

    Arnst, MaartenEcole Centrale Paris2007

    … the experimental identification of probabilistic models for the dynamical behaviour of structures. The inversion of probabilistic structural models with minimal parameterization, introduced by Soize, from measured transfer functions is in particular considered. It is first shown that the classical …

    liege Repository record

  17. A study of the synthesis, structure, and ionic conductivity of sodium and lithium lanthanide pyrosilicates, A3LnSi2O7

    Hodkinson, JackUniversity of Cambridge2019

    … salt ion exchange of Li+ for Na+ in Na3LnSi2O7. Structural models for the two compounds were refined against powder X-ray and neutron diffraction data using the Rietveld method, and Fourier difference maps were used to identify the location of the lithium ions in Li3LnSi2O7. The refined …

    cambridge Repository record

  18. Effects of Motivational Beliefs and Instructional Practice on Students' Intention to Pursue Majors and Careers in Engineering

    Tendhar, ChosangVirginia Tech2015

    … domain identification model were tested using structural equation modeling (SEM) techniques. The measurement and structural models were estimated using LISREL version 9.1. This study followed the two-step SEM approach that Anderson and Gerbing (1988) suggested. A measurement model with an …

    vt Repository record

  19. Dissipated Energy Concepts for HMA Performance: Fatigue and Healing

    Shen, ShihuiUniversity of Illinois at Urbana-Champaign2015

    … allows it to be implemented into a pavement structural (thickness) design procedure. This procedure has the ability to utilize existing pavement response values with mixture properties to generate the PV-Nf relationship validated in this thesis. It also has the future capability of directly …

    uiuc Repository record

  20. Essays on corporate bonds

    Bao, Jack (Jack C.)Massachusetts Institute of Technology2009

    … In the first chapter, I test the ability of structural models of default to price corporate bonds in the cross-section. I find that the Black-Cox model can explain 45% of the cross-sectional variation in yield spreads. The unexplained portion is correlated with proxies for credit risk and …

    mit Repository record

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