Works (160)

Updated: May 1st, 2024 04:58

2024 journal article

Local Identifiability Analysis, Parameter Subset Selection and Verification for a Minimal Brain PBPK Model

BULLETIN OF MATHEMATICAL BIOLOGY, 86(2).

By: K. Dadashova n, R. Smith n & M. Haider n

author keywords: Parameter subset selection; Local sensitivity analysis; Identifiability; PBPK modeling; Energy statistics
TL;DR: This work introduces the use of a local sensitivity-based parameter subset selection algorithm in the context of a minimal PBPK (mPBPK) model of the brain for antibody therapeutics to provide a systematic and robust technique to determine identifiable parameter subsets in a PBPK model across a specified time domain of interest. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: January 3, 2024

2024 journal article

Quantifying collective motion patterns in mesenchymal cell populations using topological data analysis and agent-based modeling

MATHEMATICAL BIOSCIENCES, 370.

By: K. Nguyen n, C. Jameson*, S. Baldwin n, J. Nardini*, R. Smith n, J. Haugh n, K. Flores n

author keywords: Topological data analysis; Agent-based Modeling; Deep learning; Approximate Bayesian Computation; Cell migration
Sources: Web Of Science, NC State University Libraries
Added: April 22, 2024

2023 article

Controller Design for Distributed Parameter Systems

Smith, R. C. C. (2023, February). IEEE CONTROL SYSTEMS MAGAZINE, Vol. 43, pp. 98–100.

By: R. Smith n

author keywords: Book reviews; Distributed parameter systems; Control design; State estimation; Stability analysis
Sources: ORCID, Web Of Science, NC State University Libraries
Added: January 13, 2023

2022 journal article

Effects of problem complexity reduction on parameter sensitivity and classification in charring ablator scenarios

AEROSPACE SCIENCE AND TECHNOLOGY, 124.

By: P. Rostkowski*, J. Meurisse*, J. Thornton n, R. Smith* & M. Panesi*

author keywords: Mars Science Laboratory; Ablator; Material response; Sensitivity analysis; Sobol indices; Morris screening
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: September 12, 2022

2021 journal article

A hierarchical Bayesian model for background variation in radiation source localization

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1002.

By: I. Michaud*, K. Schmidt n, R. Smith n & J. Mattingly n

author keywords: Mixed-effects statistical model; Radiation detection; Inverse problem; Bayesian inference; Wide-area search
TL;DR: A hierarchical Bayesian model is presented that simultaneously infers background and source location parameters without requiring separate estimation of the background radiation at each detector location. (via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: June 10, 2021

2021 journal article

Bayesian inference and uncertainty propagation using efficient fractional-order viscoelastic models for dielectric elastomers

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 32(4), 486–496.

By: P. Miles n, G. Pash n, R. Smith n & W. Oates*

author keywords: Fractional derivative; Riemann– Liouville; dielectric elastomers; viscoelasticity; Bayesian inference; uncertainty propagation
UN Sustainable Development Goal Categories
Sources: ORCID, Web Of Science, NC State University Libraries
Added: November 10, 2020

2021 journal article

Modeling and Parameter Subset Selection for Fibrin Polymerization Kinetics with Applications to Wound Healing

Bulletin of Mathematical Biology, 83(5).

By: K. Pearce n, K. Nellenbach n, R. Smith n, A. Brown n & M. Haider n

author keywords: Wound healing; Fibrin polymerization; Kinetics model; Parameter identifiability; Subset selection
MeSH headings : Animals; Cells, Cultured; Fibrin / metabolism; Humans; Kinetics; Models, Biological; Polymerization; Wound Healing
TL;DR: The findings demonstrate the high degree of information within a single fibrin accumulation curve, and a tailored model and parameter subset selection approach for improving optimization and reducing model complexity in the context of polymerization experiments. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, ORCID, Crossref
Added: March 23, 2021

2021 journal article

Radiation Source Localization Using Surrogate Models Constructed from 3-D Monte Carlo Transport Physics Simulations

NUCLEAR TECHNOLOGY, 207(1), 37–53.

By: P. Miles n, J. Cook n, Z. Angers*, C. Swenson*, B. Kiedrowski*, J. Mattingly n, R. Smith n

author keywords: Radiation detection; inverse problem; Bayesian inference; MCNP; surrogate modeling
TL;DR: The Monte Carlo N-Particle code is employed to provide high-fidelity simulations of radiation transport within an urban domain to develop efficient and accurate surrogate models of the detector responses that provide an efficient framework for Bayesian inference and experimental design. (via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: July 13, 2020

2021 journal article

SURROGATE BASED MUTUAL INFORMATION APPROXIMATION AND OPTIMIZATION FOR URBAN SOURCE LOCALIZATION

INTERNATIONAL JOURNAL FOR UNCERTAINTY QUANTIFICATION, 11(5), 39–55.

By: A. Hollis n, R. Smith n & A. Wilson n

author keywords: computational statistics; information theory; bayesian inference; spatial statistics
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: June 21, 2021

2021 article

The maximum entropy method for data fusion and uncertainty quantification in multifunctional materials and structures

Gao, W., Miles, P. R., Smith, R. C., & Oates, W. S. (2021, October 8). JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, Vol. 10.

By: W. Gao*, P. Miles n, R. Smith n & W. Oates*

author keywords: Maximum entropy; data fusion; uncertainty quantification; dielectric elastomer membrane; ferroelectric domain wall
TL;DR: The Maximum Entropy (ME) method is applied to more complicated ferroelectric single crystals containing domain structures and soft electrostrictive membranes under both mechanical and electrical loading and finds that parameters, which were initially unidentifiable using a single quantity of interest, become identifiable using multiple quantities of interest. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: ORCID, Web Of Science, NC State University Libraries
Added: October 10, 2021

2021 journal article

Uncertainty Quantification and Sensitivity Analysis of Partial Charges on Macroscopic Solvent Properties in Molecular Dynamics Simulations with a Machine Learning Model

JOURNAL OF CHEMICAL INFORMATION AND MODELING, 61(4), 1745–1761.

By: J. Peerless n, A. Kwansa n, B. Hawkins n, R. Smith n & Y. Yingling n

MeSH headings : Machine Learning; Molecular Dynamics Simulation; Solvents; Static Electricity; Uncertainty
TL;DR: The results indicate that the effect of partial charge variance on bulk properties, such as solubility parameters, diffusivity, dipole moment, and density, measured from MD simulations is significant; however, measured properties are observed to be less sensitive to partial charges of less accessible atoms. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, ORCID
Added: March 18, 2021

2020 journal article

Variance-based sensitivity analysis for time-dependent processes

RELIABILITY ENGINEERING & SYSTEM SAFETY, 196.

By: A. Alexanderian n, P. Gremaud n & R. Smith n

author keywords: Global sensitivity analysis; Sobol' Indices; Karhunen-Loeve expansion; Time-dependent processes; Surrogate models; Polynomial chaos; Uncertainty quantification
TL;DR: A variance-based method is developed that leverages the correlation structure of the problems under study and employs surrogate models to accelerate the computations and analyzes errors resulting from fixing unimportant uncertain parameters to their nominal values through a priori estimates. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: March 16, 2020

2019 article

A Mutual Information-Based Experimental Design Framework to Use High-Fidelity Nuclear Reactor Codes to Calibrate Low-Fidelity Codes

Gordon, N., Gilkey, L., Smith, R. C., Michaud, I., Williams, B., Mousseau, V., … Jones, C. (2019, December 2). NUCLEAR TECHNOLOGY, Vol. 205, pp. 1685–1696.

By: N. Gordon*, L. Gilkey*, R. Smith n, I. Michaud*, B. Williams*, V. Mousseau*, R. Hooper*, C. Jones*

author keywords: Mutual information; experimental design; Bayesian inference
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: December 9, 2019

2019 journal article

Active subspace analysis and uncertainty quantification for a polydomain ferroelectric phase-field model

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 30(14), 2027–2051.

By: L. Leon*, P. Miles n, R. Smith n & W. Oates*

author keywords: Ferroelectric; active subspace analysis; uncertainty quantification
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 19, 2019

2019 journal article

Application and Evaluation of Surrogate Models for Radiation Source Search

ALGORITHMS, 12(12).

By: J. Cook n, R. Smith n, J. Hite n, R. Stefanescu & J. Mattingly n

author keywords: surrogate modeling; bayesian inference; radiation source localization
TL;DR: This work considers the problem of inferring the 2D location and intensity of a radiation source in an urban environment using a ray-tracing model based on Boltzmann transport theory, and considers surrogate models based on Legendre polynomials, multivariate adaptive regression splines, radial basis functions, Gaussian processes, and neural networks. (via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: January 21, 2020

2019 journal article

DERIVATIVE-BASED GLOBAL SENSITIVITY ANALYSIS FOR MODELS WITH HIGH-DIMENSIONAL INPUTS AND FUNCTIONAL OUTPUTS

SIAM JOURNAL ON SCIENTIFIC COMPUTING, 41(6), A3524–A3551.

By: H. Cleaves*, A. Alexanderian*, H. Guy, R. Smith* & M. Yu

author keywords: global sensitivity analysis; DGSMs; functional Sobol' indices; Karhunen-Loeve expansions
TL;DR: A framework for derivative-based global sensitivity analysis (GSA) for models with high-dimensional input parameters and functional outputs is presented and the strategy for a nonlinear ODE model of cholera epidemics and for elliptic PDEs is illustrated. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 3, 2020

2019 article

Global Sensitivity Analysis of Fractional-Order Viscoelasticity Models

BEHAVIOR AND MECHANICS OF MULTIFUNCTIONAL MATERIALS XIII, Vol. 10968.

By: P. Miles n, G. Pash n, R. Smith n & W. Oates*

author keywords: Viscoelasticity; Global Sensitivity Analysis; Fractional-Order Calculus
UN Sustainable Development Goal Categories
13. Climate Action (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: September 9, 2019

2019 journal article

Gradient-Free Construction of Active Subspaces for Dimension Reduction in Complex Models with Applications to Neutronics

SIAM-ASA JOURNAL ON UNCERTAINTY QUANTIFICATION, 7(1), 117–142.

By: K. Coleman n, A. Lewis*, R. Smith n, B. Williams*, M. Morris* & B. Khuwaileh*

author keywords: gradient-free active subspaces; neutronics applications
TL;DR: This paper aims to demonstrate the ability to efficiently approximate complex models by constructing low-overtime subspace models using a simple model-to-model comparison procedure. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: April 9, 2019

2019 journal article

Model Input and Output Dimension Reduction Using Karhunen-Loeve Expansions With Application to Biotransport

ASCE-ASME JOURNAL OF RISK AND UNCERTAINTY IN ENGINEERING SYSTEMS PART B-MECHANICAL ENGINEERING, 5(4).

By: A. Alexanderian n, W. Reese n, R. Smith n & M. Yu*

Sources: Web Of Science, NC State University Libraries
Added: January 27, 2020

2019 article

Parameter subset selection techniques for problems in mathematical biology

Olsen, C. H., Ottesen, J. T., Smith, R. C., & Olufsen, M. S. (2019, April). BIOLOGICAL CYBERNETICS, Vol. 113, pp. 121–138.

By: C. Olsen n, J. Ottesen*, R. Smith n & M. Olufsen n

author keywords: Parameter identifiability; Parameter subset selection; Parameter estimation; Modeling
MeSH headings : Algorithms; Blood Circulation; Blood Pressure; Computational Biology; Humans; Models, Biological; Models, Theoretical; Nonlinear Dynamics
TL;DR: This study demonstrates that methods based on local sensitivities are preferable in terms of computational cost and model fit when good initial parameter values are available, but that global methods should be considered when initial parameter value is not known or poorly understood. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: April 2, 2019

2019 article

Parameter-dependent Surrogate Model Development for PZT Bimorph Actuators Employed for Micro-air Vehicles

BEHAVIOR AND MECHANICS OF MULTIFUNCTIONAL MATERIALS XIII, Vol. 10968.

By: N. Bravo n & R. Smith n

author keywords: Uncertainty Quantification; PZT Bimorph; Modeling; Surrogate; Homogenized Energy Model
TL;DR: The use of the homogenized energy model (HEM) is discussed to develop a dynamic mode decomposition surrogate model for a PZT bimorph actuator used for micro-air vehicles including Robobee. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: September 9, 2019

2019 journal article

Sequential optimal positioning of mobile sensors using mutual information

STATISTICAL ANALYSIS AND DATA MINING, 12(6), 465–478.

By: K. Schmidt*, R. Smith n, J. Hite n, J. Mattingly n, Y. Azmy n, D. Rajan*, R. Goldhahn*

author keywords: Bayesian inference; inverse problem; mutual information; sensor placement; source localization
TL;DR: While most mobile sensor strategies designate a trajectory for sensor movement, this work instead employs mutual information, based on Shannon entropy, to choose the next measurement location from a discrete set of design conditions. (via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (Web of Science; OpenAlex)
13. Climate Action (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 12, 2019

2019 journal article

Surrogate-Based Robust Design for a Non-Smooth Radiation Source Detection Problem

ALGORITHMS, 12(6).

By: R. Stefanescu*, J. Hite n, J. Cook n, R. Smith n & J. Mattingly n

author keywords: robust design in the average sense; Particle Swarm; radial basis functions; radiation source detection
TL;DR: A robust sensor network design is developed that is optimal in an average sense for detecting source location and intensity with minimized uncertainty and employs a verified surrogate model based on radial basis functions. (via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: July 22, 2019

2019 article

The use of Bayesian inference in the characterization of materials and thin films

ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES, Vol. 75, pp. A211–A211.

By: J. Jones*, R. Broughton*, T. Iamsasri*, C. Fancher*, A. Wilson*, B. Reich*, R. Smith*

Sources: Web Of Science, NC State University Libraries
Added: August 3, 2020

2019 journal article

Uncertainty quantification of two-phase flow and boiling heat transfer simulations through a data-driven modular Bayesian approach

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 138, 1096–1116.

By: Y. Liu*, N. Dinh n, R. Smith n & X. Sun*

Contributors: Y. Liu*, N. Dinh n, R. Smith n & X. Sun*

TL;DR: An approach to inversely quantify the uncertainty of MCFD simulations through a data-driven modular Bayesian inference is presented, and a forward uncertainty propagation of the MCFD solver with the obtained uncertainties shows that the agreement between the solver predictions and experimental measurements are significantly improved. (via Semantic Scholar)
UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: July 15, 2019

2018 journal article

A PROBABILISTIC SUBSPACE BOUND WITH APPLICATION TO ACTIVE SUBSPACES

SIAM JOURNAL ON MATRIX ANALYSIS AND APPLICATIONS, 39(3), 1208–1220.

By: J. Holodnak*, I. Ipsen* & R. Smith*

Contributors: J. Holodnak*, I. Ipsen & R. Smith*

author keywords: positive semidefinite matrices; principal angles; eigenvalue decomposition; eigen-value gaps; matrix concentration inequality; intrinsic dimension; Monte Carlo sampling; active sub-spaces
TL;DR: This work presents a bound on the number of samples so that with high probability the angle between the dominant subspaces of E and S is less than a user-specified tolerance, and suggests that Monte Carlo sampling can be efficient in the presence of many parameters, as long as the underlying function f is sufficiently smooth. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: January 7, 2019

2018 article

Active Subspace Uncertainty Quantification for a Polydomain Ferroelectric Phase-Field Model

BEHAVIOR AND MECHANICS OF MULTIFUNCTIONAL MATERIALS AND COMPOSITES XII, Vol. 10596.

By: L. Leon n, R. Smith n, P. Miles* & W. Oates n

author keywords: Ferroelectric materials; ferroelectricity; active subspaces; surrogate model; uncertainty quantification; Bayesian inference
TL;DR: The analysis provides insight into how active subspace methodologies can be used to reduce computational power needed to perform Bayesian inference on model parameters informed by experimental or simulated data. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: October 16, 2018

2018 journal article

Analysis of a multi-axial quantum-informed ferroelectric continuum model: Part 2—sensitivity analysis

Journal of Intelligent Material Systems and Structures, 29(13), 2840–2860.

By: L. Leon n, R. Smith n, W. Oates* & P. Miles*

author keywords: Ferroelectric; density functional theory; Landau energy; sensitivity analysis
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: June 30, 2019

2018 journal article

Automated Defect Detection in Spent Nuclear Fuel Using Combined Cerenkov Radiation and Gamma Emission Tomography Data

Nuclear Technology, 204(3), 343–353.

By: E. Brayfindley n, R. Smith n, J. Mattingly n & R. Brigantic*

author keywords: Digital Cerenkov Viewing Device; tomography; image analysis; spent fuel characterization
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, Crossref, NC State University Libraries
Added: December 3, 2018

2018 chapter

Bayesian Approaches to Uncertainty Quantification and Structure Refinement from X-Ray Diffraction

In Materials Discovery and Design (pp. 81–102).

By: A. Paterson n, B. Reich n, R. Smith n, A. Wilson n & J. Jones n

TL;DR: This chapter introduces classical frequentist and Bayesian inference applied to analyzing diffraction profiles, and the methods are compared and contrasted. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: June 30, 2019

2018 journal article

Forecasting and Uncertainty Quantification Using a Hybrid of Mechanistic and Non-mechanistic Models for an Age-Structured Population Model

Bulletin of Mathematical Biology, 80(6), 1578–1595.

By: J. Lagergren n, A. Reeder n, F. Hamilton n, R. Smith n & K. Flores n

author keywords: State space reconstruction; Uncertainty quantification; Structured population model; Forecasting
MeSH headings : Animals; Bayes Theorem; Coleoptera / pathogenicity; Coleoptera / physiology; Forecasting / methods; Mathematical Concepts; Models, Biological; Multivariate Analysis; Population Dynamics / statistics & numerical data; Uncertainty
TL;DR: An analysis of the results from Bayesian inference for the mechanistic model and hybrid models is performed to suggest reasons why hybrid modeling methodology may enable more accurate forecasts of multivariate systems than traditional approaches. (via Semantic Scholar)
Sources: Web Of Science, Crossref, NC State University Libraries
Added: August 6, 2018

2018 article

Uncertainty Quantification for PZT Bimorph Actuators

BEHAVIOR AND MECHANICS OF MULTIFUNCTIONAL MATERIALS AND COMPOSITES XII, Vol. 10596.

By: N. Bravo n, R. Smith n & J. Crews*

author keywords: Uncertainty Quantification; PZT Bimorph; Modeling; Surrogate; Homogenized Energy Model
TL;DR: A high-fidelity model for a PZT bimorph actuator used for micro-air vehicles, which includes the Robobee is developed using the homogenized energy model (HEM) framework, which quantifies the nonlinear, hysteretic, and rate-dependent behavior inherent to PzT in dynamic operating regimes. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: October 16, 2018

2018 article

Uncertainty-enabled design of electromagnetic reflectors with integrated shape control

BEHAVIOR AND MECHANICS OF MULTIFUNCTIONAL MATERIALS AND COMPOSITES XII, Vol. 10596.

By: S. Haque*, L. Kindrat n, L. Zhang, V. Mikheev*, D. Kim n, S. Liu*, J. Chung*, M. Kuian*, J. Massad*, R. Smith*

author keywords: Bimorph membrane; Zernike polynomials; PVDF; Sensitivity analysis; Uncertainty Quantification
TL;DR: A model to determine the shape of the laminate for a given distribution of control voltages and a probabilistic description of reflector performance using statistical methods to quantify uncertainty is described. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: October 16, 2018

2017 journal article

A Bayesian approach to modeling diffraction profiles and application to ferroelectric materials

Journal of Applied Crystallography, 50(1), 211–220.

By: T. Iamsasri n, J. Guerrier n, G. Esteves n, C. Fancher n, A. Wilson n, R. Smith n, E. Paisley*, R. Johnson-Wilke* ...

author keywords: ferroelectric materials; Bayesian inference; domain switching fraction; modeling diffraction profiles
Sources: Crossref, NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2017 journal article

A Linear Regression Framework for the Verification of Bayesian Model Calibration Algorithms

Journal of Verification, Validation and Uncertainty Quantification, 2(2), 021006.

By: J. McMahan*, B. Williams*, R. Smith n & N. Malaya*

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: June 30, 2019

2017 conference paper

A maximum entropy approach for uncertainty quantification and analysis of multifunctional materials

Proceedings of the asme conference on smart materials adaptive.

By: W. Gao*, W. Oates* & R. Smith n

Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2017 conference paper

A multi-axial electromechanically-coupled homogenized energy model for ferroelectric materials

Proceedings of the asme conference on smart materials adaptive.

By: W. Oates* & R. Smith n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2017 journal article

Bayesian model calibration and uncertainty quantification for an HIV model using adaptive Metropolis algorithms

Inverse Problems in Science and Engineering, 26(2), 233–256.

By: M. Wentworth*, R. Smith n & B. Williams*

author keywords: Bayesian model calibration; uncertainty quantification; HIV model
TL;DR: This paper uses adaptive Metropolis algorithms to construct densities for input parameters in a previously developed HIV model and employs two MCMC algorithms: Delayed Rejection Adaptive Metropolis (DRAM) and Differential Evolution AdaptiveMetropolis (DREAM). (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: June 30, 2019

2017 article

CPDE special section

ANNUAL REVIEWS IN CONTROL, Vol. 44, pp. 183–183.

By: R. Smith n & H. Zwart*

Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2017 conference paper

Data-driven model development and feedback control design for PZT bimorph actuators

Proceedings of the asme conference on smart materials adaptive.

By: N. Bravo n, R. Smith n & J. Crews*

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2017 article

Global Sensitivity Analysis for a Quantum Informed Ferroelectric Phase Field Model

BEHAVIOR AND MECHANICS OF MULTIFUNCTIONAL MATERIALS AND COMPOSITES 2017, Vol. 10165.

By: L. Leon n, R. Smith n, W. Oates* & P. Miles*

author keywords: Density functional theory (DFT); ferroelectricity; global sensitivity analysis; HDMR; lead titanate
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2017 journal article

Hybrid optimization and Bayesian inference techniques for a non-smooth radiation detection problem

International Journal for Numerical Methods in Engineering, 111(10), 955–982.

By: R. Ştefănescu n, K. Schmidt n, J. Hite n, R. Smith n & J. Mattingly n

author keywords: inverse problems; simulated annealing; particle swarm; genetic algorithm; implicit filtering; DiffeRential Evolution Adaptive Metropolis; delayed rejection adaptive Metropolis
TL;DR: Three hybrid algorithms composed of mixed optimization techniques are investigated, combining global optimization and implicit filtering address, difficulties associated with the non‐smooth response, and their performances are shown to significantly decrease the computational time over the global optimization methods. (via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Sources: Web Of Science, Crossref, NC State University Libraries
Added: August 6, 2018

2017 conference paper

Identifiability and active subspace analysis for a polydomain ferroelectric phase field model

Proceedings of the asme conference on smart materials adaptive.

By: L. Leon n, R. Smith n, W. Oates* & P. Miles*

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2017 article

Surrogate Model Development and Feedforward Control Implementation for PZT Bimorph Actuators Employed for Robobee

BEHAVIOR AND MECHANICS OF MULTIFUNCTIONAL MATERIALS AND COMPOSITES 2017, Vol. 10165.

By: N. Bravo n, R. Smith n & J. Crews*

author keywords: Modeling; Control; Dynamic Mode Decomposition; Homogenized Energy Model
TL;DR: This paper discusses the development of models for PZT bimorph actuators used to power micro-air vehicles including Robobee, and employs the homogenized energy model (HEM) framework to model the actuator dynamics. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2017 article

Uncertainty Analysis of Continuum Phase Field Modeling in 180 degrees Domain Wall Structures

BEHAVIOR AND MECHANICS OF MULTIFUNCTIONAL MATERIALS AND COMPOSITES 2017, Vol. 10165.

By: P. Miles*, L. Leon n, R. Smith n & W. Oates*

author keywords: Ferroelectrics; Domain Wall Structures; Uncertainty; Parameter Estimation
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2017 conference paper

Uncertainty analysis of ferroelectric polydomain structures

Proceedings of the asme conference on smart materials adaptive.

By: P. Miles*, W. Oates*, L. Leon n & R. Smith n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2017 journal article

Validation and uncertainty quantification of detector response functions for a 1″×2″ NaI collimated detector intended for inverse radioisotope source mapping applications

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 410, 1–15.

By: N. Nelson n, Y. Azmy n, R. Gardner n, J. Mattingly n, R. Smith n, L. Worrall, S. Dewji*

author keywords: Nal collimated detector; Response function; Validation; Uncertainty quantification; Holdup measurements
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: June 30, 2019

2016 journal article

A PARAMETER SUBSET SELECTION ALGORITHM FORMIXED-EFFECTS MODELS

INTERNATIONAL JOURNAL FOR UNCERTAINTY QUANTIFICATION, 6(5), 405–416.

By: K. Schmidt* & R. Smith n

author keywords: mixed-effects models; sensitivity analysis; model selection; parameter subset selection
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 article

Adaptive and active materials: selected papers from the ASME 2015 Conference on Smart Materials, Adaptive Structures and Intelligent Systems (SMASIS 15) (Colorado Springs, CO, USA, 21-23 September 2015)

Smith, R. C., Anderson, I., Hartl, D., Atulasimha, J., Sarles, S. A., Wissa, A., & Shafer, M. (2016, October). SMART MATERIALS AND STRUCTURES, Vol. 25.

Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 journal article

An information theoretic approach to use high-fidelity codes to calibrate low-fidelity codes

JOURNAL OF COMPUTATIONAL PHYSICS, 324, 24–43.

By: A. Lewis n, R. Smith n, B. Williams* & V. Figueroa*

author keywords: Model calibration; Bayesian experimental design; Optimal evaluation; Mutual information
TL;DR: An information-theoretic framework is employed to determine the reduction in parameter uncertainty that is obtained by evaluating the high-fidelity code at a specific set of design conditions, which are chosen sequentially, based on the amount of information that they contribute to the low-f fidelity model parameters. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 conference paper

Bayesian metropolis methods applied to sensor networks for radiation source localization

2016 IEEE International Conference on Multisensor Fusion and Integration for Intelligent Systems (MFI), 389–393.

By: J. Hite n, J. Mattingly n, K. Schmidt n, R. Stelanescu & R. Smith n

TL;DR: An application of statistical techniques to the localization of an unknown gamma source in an urban environment is presented and Markov Chain Monte Carlo is applied to generate a full posterior probability density estimating the source location and intensity based on counts reported from a distributed detector network. (via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2016 article

Frequentist and Bayesian Lasso Techniques for Parameter Selection in Nonlinearly Parameterized Models

IFAC PAPERSONLINE, Vol. 49, pp. 416–421.

By: K. Coleman n, K. Schmidt n & R. Smith n

author keywords: DRAM; parameter selection; regularization; regression; identifiability
TL;DR: This paper surveys the performance of existing algorithms and presents a new Bayesian lasso implementation based on the Delayed Rejection Adaptive Metropolis (DRAM) algorithm. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 journal article

Gradient free active subspace construction using Morris screening elementary effects

COMPUTERS & MATHEMATICS WITH APPLICATIONS, 72(6), 1603–1615.

By: A. Lewis n, R. Smith n & B. Williams*

author keywords: Active subspace construction; Reduced-order modeling; Morris screening
TL;DR: This work introduces a gradient-free active subspace construction method that avoids the need to sample from the gradient, which may not be available, via construction of a coarse approximation to the gradient matrix by employing the concept of "elementary effects" from Morris screening procedures. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 article

Parameter Estimation for Predictive Simulation of Oscillatory Systems with Model Discrepancy

IFAC PAPERSONLINE, Vol. 49, pp. 428–433.

By: J. McMahan* & R. Smith n

author keywords: parameter estimation; Bayesian inversion; modeling errors; oscillation; prediction intervals
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 journal article

Parameter Selection and Verification Techniques Based on Global Sens Analysis Illustrated for an HIV Model

SIAM-ASA JOURNAL ON UNCERTAINTY QUANTIFICATION, 4(1), 266–297.

By: M. Wentworth, R. Smith* & H. Banks*

author keywords: global sensitivity analysis; parameter selection; verificatio
TL;DR: This work considers parameter selection and verification techniques for models having one or more parameters that are noninfluential in the sense that they minimally impact model outputs, and focuses on global sensitivity analysis techniques based on Pearson correlation coefficient, Sobol indices, and Morris indices. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 article

Uncertainty analysis of continuum scale ferroelectric energy landscapes using density functional theory

BEHAVIOR AND MECHANICS OF MULTIFUNCTIONAL MATERIALS AND COMPOSITES 2016, Vol. 9800.

By: W. Oates*, P. Miles*, L. Leon n & R. Smith n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 journal article

Use of Bayesian Inference in Crystallographic Structure Refinement via Full Diffraction Profile Analysis

Scientific Reports, 6(1), 31625.

By: C. Fancher n, Z. Han n, I. Levin*, K. Page*, B. Reich n, R. Smith n, A. Wilson n, J. Jones n

Contributors: C. Fancher n, Z. Han n, I. Levin*, K. Page*, B. Reich n, R. Smith n, A. Wilson n, J. Jones n

TL;DR: A Bayesian inference method for refining crystallographic structures is presented, which better estimates the true uncertainties in the model as compared to the Rietveld method. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries, ORCID, NC State University Libraries
Added: August 6, 2018

2015 journal article

Bayesian uncertainty analysis of finite deformation viscoelasticity

MECHANICS OF MATERIALS, 91, 35–49.

By: P. Miles*, M. Hays*, R. Smith n & W. Oates*

author keywords: Viscoelasticity; Uncertainty; Dielectric elastomers; Bayesian statistics
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2014 journal article

A modeling and uncertainty quantification framework for a flexible structure with macrofiber composite actuators operating in hysteretic regimes

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 25(2), 204–228.

By: Z. Hu n, R. Smith n, N. Burch n, M. Hays* & W. Oates*

author keywords: Active composites; morphing; piezoelectric; optimization; piezoelectric; hysteresis
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2014 conference paper

Construction of Bayesian prediction intervals for smart systems

Proceedings of the ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems - 2013, vol 1.

By: M. Wentworth n & R. Smith n

TL;DR: Adapt Metropolis algorithms are employed to construct densities for parameters and quantities of interest for models arising in the analysis of smart material structures by propagating uncertainties through the models. (via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2014 journal article

High-Dimensional Model Representations for the Neutron Transport Equation

NUCLEAR SCIENCE AND ENGINEERING, 177(3), 350–360.

By: Z. Hu n, R. Smith n, J. Willert n & C. Kelley n

UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2014 conference paper

Model calibration for beam models in the presence of model discrepancy

Proceedings of the ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems, 2014, vol 1.

By: A. Lewis n, J. McMahan n & R. Smith n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2014 journal article

Quantification of parameter and model uncertainty for shape memory alloy bending actuators

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 25(2), 229–245.

By: J. Crews* & R. Smith n

author keywords: Shape memory; uncertainty quantification; Markov chain Monte Carlo
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2014 article

Special Issue: 2012 ASME Conference on Smart Materials, Adaptive Structures, and Intelligent Systems Preface

Smith, R., Wereley, N. M., Myers, O., Dragoni, E., Ruggiero, E., & Loh, K. J. (2014, June). JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, Vol. 25, pp. 1039–1040.

By: R. Smith*, N. Wereley, O. Myers, E. Dragoni, E. Ruggiero & K. Loh

Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2014 book

Uncertainty Quantification: Theory, Implementation and Applications

Philadelphia: SIAM.

By: R. Smith

Sources: NC State University Libraries, ORCID
Added: July 10, 2019

2014 conference paper

Uncertainty analysis of a finite deformation viscoelastic model

Proceedings of the ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems, 2014, vol 2.

By: P. Miles*, M. Hays*, R. Smith n & W. Oates*

Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2014 conference paper

ncertainty quantification for robust control design of smart material systems

Proceedings of the ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems - 2013, vol 1.

By: J. McMahan n & R. Smith n

Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2013 journal article

CONFIDENCE INTERVAL ESTIMATION FOR AN EMPIRICAL MODEL QUANTIFYING THE EFFECT OF SOIL MOISTURE AND PLANT DEVELOPMENT ON SOYBEAN (GLYCINE MAX (L.) MERR.) LEAF CONDUCTANCE

International Journal of Pure and Apllied Mathematics, 83(3).

By: J. Matthews n, R. Smith n & E. Fiscus n

Sources: Crossref, NC State University Libraries
Added: June 30, 2019

2013 journal article

Comparison of Frequentist and Bayesian Confidence Analysis Methods on a Viscoelastic Stenosis Model

SIAM/ASA Journal on Uncertainty Quantification, 1(1), 348–369.

By: Z. Kenz n, H. Banks n & R. Smith n

author keywords: viscoelastic model; asymptotic theory; bootstrapping; Bayesian; MCMC; DRAM
TL;DR: This work compares the performance of three methods for quantifying uncertainty in model parameters: asymptotic theory, bootstrapping, and Bayesian estimation, and holds constant the parameter causing the most complex correlation, obtaining results which are more consistent than those obtained when estimating all parameters. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: June 30, 2019

2013 conference paper

Development of robust control algorithms for shape memory alloy bending actuators

Proceedings of the ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems, vol 1, 391–400.

By: J. Crews n, R. Smith n & J. Hannen n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2013 conference paper

Homogenized energy model and markov chain Monte Carlo simulations for macro fiber composites operating in broadband regimes

Proceedings of the ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems, vol 1, 321–327.

By: Z. Hu, R. Smith, N. Burch, M. Hays & W. Oates

Sources: NC State University Libraries, ORCID
Added: August 6, 2018

2013 journal article

Inversion algorithms for the homogenized energy model for hysteresis in ferroelectric and shape memory alloy compounds

Journal of Intelligent Material Systems and Structures, 24(15), 1796–1821.

By: J. McMahan n, J. Crews n & R. Smith n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2013 journal article

Quantification of parameter uncertainty for robust control of shape memory alloy bending actuators

SMART MATERIALS AND STRUCTURES, 22(11).

By: J. Crews*, J. McMahan n, R. Smith n & J. Hannen n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2013 journal article

Quantifying Plant Age and Available Water Effects on Soybean Leaf Conductance

Agronomy Journal, 105(1), 28–36.

By: J. Matthews n, E. Fiscus n, R. Smith n & J. Heitman n

TL;DR: A new empirical model effectively quantifies the response of gₗ to plant-available soil water and plant age with a functional form similar to the abscisic acid related Tardieu–Davies model. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (Web of Science; OpenAlex)
13. Climate Action (Web of Science)
Sources: Web Of Science, NC State University Libraries, Crossref
Added: August 6, 2018

2013 conference paper

Sliding mode control for inverse compensated hysteretic smart systems

Proceedings of the ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems, vol 1, 335–344.

By: J. McMahan & R. Smith

Sources: NC State University Libraries, ORCID
Added: August 6, 2018

2013 conference paper

The homogenized energy model for characterizing magnetization and strains in ferromagnetic materials

Proceedings of the ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems, vol 1, 489–496.

By: L. Blaircum n & R. Smith n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2012 conference paper

A strain model for piezoelectric materials operating in highly hysteretic regimes

Proceedings of the ASME Conference on Smart Materials, Adaptive Structures and Intelligent systems (SMASIS 2011), vol 2, 241–249.

By: Z. Hu n & R. Smith n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2012 article

Data-driven techniques to estimate parameters in a rate-dependent ferromagnetic hysteresis model

Hu, Z., Smith, R. C., & Ernstberger, J. M. (2012, May 1). PHYSICA B-CONDENSED MATTER, Vol. 407, pp. 1394–1398.

By: Z. Hu n, R. Smith n & J. Ernstberger*

author keywords: Hysteresis; Ferromagnetic materials; Data-driven estimation techniques
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2012 journal article

Data-driven techniques to estimate parameters in the homogenized energy model for shape memory alloys

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 23(17), 1897–1920.

By: J. Crews n, R. Smith n, K. Pender n, J. Hannen n & G. Buckner n

author keywords: Shape memory alloys; hysteresis; parameter estimation
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2012 conference paper

Density function optimization for the homogenized energy model of shape memory alloys

Proceedings of the ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems (SMASIS 2011), vol 1, 371–379.

By: J. Crews n & R. Smith n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2012 journal article

Homogenized energy model for characterizing polarization and strains in hysteretic ferroelectric materials: Material properties and uniaxial model development

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 23(16), 1833–1867.

By: R. Smith n & Z. Hu n

author keywords: Ferroelectric hysteresis; nonlinear models
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2012 article

Modeling and Bayesian Parameter Estimation for Shape Memory Alloy Bending Actuators

BEHAVIOR AND MECHANICS OF MULTIFUNCTIONAL MATERIALS AND COMPOSITES 2012, Vol. 8342.

By: J. Crews n & R. Smith n

author keywords: shape memory alloys; uncertainty quantificiation; markov chain monte carlo
TL;DR: A homogenized energy model for shape memory alloy (SMA) bending actuators is employed and the Random Walk Metropolis algorithm, the MCMC method used here, is tested to test the feasibility. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2012 article

Sliding Mode Control Design for Hysteretic Ferroelectric Materials

BEHAVIOR AND MECHANICS OF MULTIFUNCTIONAL MATERIALS AND COMPOSITES 2012, Vol. 8342.

By: J. McMahan n & R. Smith n

author keywords: smart systems; hysteresis; sliding mode control; variable structure control; inverse control
TL;DR: A recently developed modification to the homogenized energy model for ferroelectric materials is used with a sliding mode control design to track a reference trajectory even in the presence of modeling and inversion errors. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2012 journal article

The homogenized energy model for characterizing polarization and strains in hysteretic ferroelectric materials: Implementation algorithms and data-driven parameter estimation techniques

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 23(16), 1869–1894.

By: Z. Hu n, R. Smith n & J. Ernstberger*

author keywords: Actuator; ferroelectric; hysteresis; piezoelectric
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2011 article

Adaptive Control Design for Hysteretic Smart Systems

BEHAVIOR AND MECHANICS OF MULTIFUNCTIONAL MATERIALS AND COMPOSITES 2011, Vol. 7978.

By: J. McMahan & R. Smith n

author keywords: smart systems; hysteresis; adaptive control; composite control
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2011 article

Statistical Parameter Estimation for Macro Fiber Composite Actuators using the Homogenized Energy Model

BEHAVIOR AND MECHANICS OF MULTIFUNCTIONAL MATERIALS AND COMPOSITES 2011, Vol. 7978.

By: Z. Hu n, R. Smith n, M. Stuebner n, M. Hays* & W. Oates*

author keywords: Nonlinear piezoelectric model; macro fiber composite
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2010 journal article

A Non-linear Optimal Control Design using Narrowband Perturbation Feedback for Magnetostrictive Actuators

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 21(16), 1681–1693.

By: W. Oates*, R. Zrostlik, S. Eichhorn & R. Smith n

author keywords: magnetostrictive; narrowband control; hysteresis; non-linear optimal control
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2010 article

Design of RF MEMS Switches without Pull-in Instability

BEHAVIOR AND MECHANICS OF MULTIFUNCTIONAL MATERIALS AND COMPOSITES 2010, Vol. 7644.

By: W. Proctor n, G. Richards*, C. Shen*, T. Skorczewski*, M. Wang*, J. Zhang*, P. Zhong*, J. Massad*, R. Smith n

TL;DR: Analysis showed that a RF MEMS switch could feasibly be designed with a single pulse waveform and no pull-in instability and achieve comparable results to previous waveform designs. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2010 article

Inverse Model Construction for Control Implementation of Macro Fiber Composite Actuators Operating in Hysteretic Regimes

BEHAVIOR AND MECHANICS OF MULTIFUNCTIONAL MATERIALS AND COMPOSITES 2010, Vol. 7644.

By: M. Stuebner n & R. Smith n

author keywords: Hysteretic systems; Inverse compensator
TL;DR: In this paper, hysteresis is modeled using the homogenized energy model and the inverse model is used to construct an inverse compensator framework suitable for subsequent control design. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2010 article

Proper Orthogonal Decomposition with Updates for Efficient Control Design in Smart Material Systems

BEHAVIOR AND MECHANICS OF MULTIFUNCTIONAL MATERIALS AND COMPOSITES 2010, Vol. 7644.

By: S. May n & R. Smith n

author keywords: Smart materials; proper orthogonal decomposition; control
TL;DR: Proper orthogonal decomposition (POD), a basis reduction technique that allows simulations of complicated systems to be calculated at faster speeds with minimal loss of accuracy, is an attractive method to implement reduced-order models of smart material systems. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2009 journal article

Adaptive techniques for the MRAC, adaptive parameter identification, and on-line fault monitoring and accommodation for a class of positive real infinite dimensional systems

INTERNATIONAL JOURNAL OF ADAPTIVE CONTROL AND SIGNAL PROCESSING, 23(2), 193–215.

By: M. Demetriou*, K. Ito n & R. Smith n

author keywords: positive real; structured perturbations; infinite dimensional systems; adaptive observers; MRAC; fault detection and accommodation
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2009 journal article

Experimental implementation of a hybrid nonlinear control design for magnetostrictive actuators

Journal of Dynamic Systems, Measurement, and Control, 131(4).

By: W. Oates, P. Evans, R. Smith* & M. Dapino

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2009 chapter

Numerical Techniques for Simulation, Parameter Estimation, and Noise Control in Structural Acoustic Systems

In H. S. Tzou & L. A. Bergman (Eds.), Dynamics and Control of Distributed Systems (pp. 202–263).

By: H. Banks & R. Smith*

Ed(s): H. Tzou & L. Bergman

Sources: Crossref, NC State University Libraries
Added: June 30, 2019

2009 journal article

Optimal Tracking Using Magnetostrictive Actuators Operating in Nonlinear and Hysteretic Regimes

JOURNAL OF DYNAMIC SYSTEMS MEASUREMENT AND CONTROL-TRANSACTIONS OF THE ASME, 131(3).

By: W. Oates* & R. Smith n

author keywords: control system synthesis; feedback; intelligent materials; intelligent structures; Kalman filters; magnetostrictive devices; nonlinear control systems; open loop systems; optimal control; perturbation techniques; PI control; piezoelectric actuators; piezoelectric materials; piezoelectric transducers; shape memory effects; stochastic processes
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2009 article

Quantification of hysteresis and nonlinear effects on the frequency response of ferroelectric and ferromagnetic materials

Stuebner, M., Atulasimha, J., & Smith, R. C. (2009, October). SMART MATERIALS AND STRUCTURES, Vol. 18.

By: M. Stuebner n, J. Atulasimha* & R. Smith n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2008 journal article

High Speed Model Implementation and Inversion Techniques for Ferroelectric and Ferromagnetic Transducers

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 19(11), 1295–1310.

By: T. Braun n & R. Smith n

author keywords: actuator; ferroelectric; magnetostrictive; piezoelectric; Terfenol
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2008 journal article

Nonlinear optimal control techniques for vibration attenuation using magnetostrictive actuators

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 19(2), 193–209.

By: W. Oates n & R. Smith n

author keywords: nonlinear optimal control; perturbation control; hysteresis; nonlinear magnetic transducers
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2007 journal article

A stress-dependent hysteresis model for ferroelectric materials

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 18(1), 69–88.

By: B. Ball n, R. Smith n, S. Kim* & S. Seelecke n

author keywords: PZT; PLZT; ferroelastic; THUNDER; hysteresis; ferroelectric; Helmholtz
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2007 journal article

A two-scale model for an array of AFM's cantilever in the static case

MATHEMATICAL AND COMPUTER MODELLING, 46(5-6), 776–805.

By: M. Lenczner n & R. Smith n

author keywords: atomic force microscopy; microsystems arrays; multiscale modeling; homogenization
TL;DR: A simplified model for an array of Atomic Force Microscopes operating in static mode based on the asymptotic theory of thin plates and the two-scale convergence introduced by M. Lenczner is presented. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2007 journal article

Adaptive monitoring and accommodation of nonlinear actuator faults in positive real infinite dimensional systems

IEEE TRANSACTIONS ON AUTOMATIC CONTROL, 52(12), 2332–2338.

By: M. Demetriou*, K. Ito n & R. Smith n

author keywords: actuator faults; distributed parameter systems; fault accommodation; nonlinear actuator dynamics
TL;DR: A robust modification is utilized in order to avoid false alarms caused by unmodelled dynamics and to assist in the fault accommodation of positive real infinite dimensional systems subjected to incipient actuator faults. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2007 journal article

Model-based robust control design for magnetostrictive transducers operating in hysteretic and nonlinear regimes

IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, 15(1), 22–39.

By: J. Nealis n & R. Smith n

author keywords: constitutive nonlinearities; distributed parameter systems; hysteresis; inverse filter; magnetostrictive devices; robust control design
TL;DR: It is illustrated that the robust designs incorporating inverse compensators can achieve the required tracking tolerance of 1-2 mum for the motivating milling application, whereas robust designs which treat the uncompensated hysteresis and nonlinearities as unmodeled disturbances cannot achieve design specifications. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2006 journal article

A homogenized energy framework for ferromagnetic hysteresis

IEEE TRANSACTIONS ON MAGNETICS, 42(7), 1747–1769.

By: R. Smith n, M. Dapino*, T. Braun & A. Mortensen

author keywords: actuators; Boltzmann equation; magnetic hysteresis; modeling; nonlinear magnetics
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2006 journal article

A homogenized energy model for the direct magnetomechanical effect

IEEE TRANSACTIONS ON MAGNETICS, 42(8), 1944–1957.

By: R. Smith n & M. Dapino*

author keywords: ferromagnetic materials; magnetic hysteresis; magnetornechanical effects; magnetostrictive devices; modeling; nonlinear magnetics
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2006 journal article

A unified framework for modeling hysteresis in ferroic materials

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 54(1), 46–85.

By: R. Smith n, S. Seelecke n, M. Dapino* & Z. Ounaies*

author keywords: ferroic materials; unified models; hysteresis; constitutive nonlinearities
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2006 journal article

Construction and experimental implementation of a model-based inverse filter to attenuate hysteresis in ferroelectric transducers

IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, 14(6), 1058–1069.

By: A. Hatch n, R. Smith n, T. De* & M. Salapaka n

author keywords: atomic force microscopy (AFM); control systems; dielectric hysteresis; ferroelectric devices; modeling
TL;DR: In this paper, the construction of inverse filters are illustrated, based on homogenized energy models, which can be used to approximately linearize the piezoceramic transducer behavior for linear design and control implementation. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2006 journal article

Efficient implementation algorithms for homogenized energy models

CONTINUUM MECHANICS AND THERMODYNAMICS, 18(3-4), 137–155.

By: T. Braun n & R. Smith n

TL;DR: Algorithm employing lookup tables are developed which permit the high speed implementation of formulations which incorporate relaxation mechanisms and electromechanical coupling in ferroelectric and ferromagnetic hysteresis formulations. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2006 journal article

Experimental validation of a homogenized energy model for magnetic after-effects

APPLIED PHYSICS LETTERS, 88(12).

By: T. Braun n, R. Smith n & M. Dapino*

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2006 journal article

Model development for atomic force microscope stage mechanisms

SIAM JOURNAL ON APPLIED MATHEMATICS, 66(6), 1998–2026.

By: R. Smith n, A. Hatch n, T. De*, M. Salapaka*, R. Del Rosario* & J. Raye*

author keywords: atomic force microscope; hysteresis model; dynamics
TL;DR: Nonlinear constitutive equations and resulting system models quantifying the nonlinear and hysteretic field‐displacement relations inherent to lead zirconate titanate (PZT) devices employed in atomic force microscope stage mechanisms are developed. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2006 journal article

Monte Carlo simulation of a solvated ionic polymer with cluster morphology

SMART MATERIALS & STRUCTURES, 15(1), 187–199.

By: J. Matthews n, E. Lada*, L. Weiland*, R. Smith n & D. Leo*

Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2005 journal article

A homogenized energy model for hysteresis in ferroelectric materials: General density formulation

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 16(9), 713–732.

By: R. Smith n, A. Hatch n, B. Mukherjee* & S. Liu*

author keywords: hysteresis; ferroelectric materials; nonlinear constitutive relations
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2005 journal article

A homogenized free energy model for hysteresis in thin-film shape memory alloys

THIN SOLID FILMS, 489(1-2), 266–290.

By: J. Massad* & R. Smith*

author keywords: shape memory alloy; hysteresis model; thin film; polycrystals
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2005 journal article

A rate-dependent two-dimensional free energy model for ferroelectric single crystals

CONTINUUM MECHANICS AND THERMODYNAMICS, 17(4), 337–350.

By: S. Seelecke n, S. Kim*, B. Ball n & R. Smith n

author keywords: ferroelectric materials; 2-D free energy model; hysteresis; rate-dependent effects
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2005 journal article

A temperature-dependent constitutive model for relaxor ferroelectrics

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 16(5), 433–448.

By: R. Smith n & C. Hom*

author keywords: hysteresis; relaxor ferroelectrics; nonlinear constitutive relations
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2005 journal article

Application of rotational isomeric state theory to ionic polymer stiffness predictions

JOURNAL OF MATERIALS RESEARCH, 20(9), 2443–2455.

By: L. Weiland*, E. Lada*, R. Smith n & D. Leo*

Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2005 journal article

Parameter estimation techniques for a class of nonlinear hysteresis models

INVERSE PROBLEMS, 21(4), 1363–1377.

By: R. Smith* & A. Hatch*

Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2005 book

Smart Material Systems: Model Development

Philadelphia: SIAM.

By: R. Smith

Sources: NC State University Libraries, ORCID
Added: July 28, 2019

2005 journal article

The Fourth World Congress of Nonlinear Analysts: Modelling, control and analysis of coupled problems, processes and phenomena

Nonlinear Analysis: Theory, Methods & Applications, 63(5-7), e1421–e1423.

By: R. V.N. Melnik n, R. Smith n & M. Shillor n

Sources: Crossref, NC State University Libraries
Added: October 25, 2020

2003 journal article

A domain wall model for hysteresis in ferroelastic materials

Journal of Intelligent Material Systems and Structures, 14(7), 455–471.

By: J. Massad & R. Smith

Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2003 journal article

A Free Energy Model for Hysteresis in Ferroelectric Materials

Journal of Intelligent Material Systems and Structures, 14(11), 719–739.

By: R. Smith*, S. Seelecke n, Z. Ounaies* & J. Smith n

author keywords: hysteresis model; ferroelectric materials; piezoceramic compounds
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, Crossref, NC State University Libraries
Added: August 6, 2018

2003 journal article

Free energy model for hysteresis in magnetostrictive transducers

JOURNAL OF APPLIED PHYSICS, 93(1), 458–466.

By: R. Smith n, M. Dapino* & S. Seelecke n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2003 book

Research Directions in Distributed Parameter Systems

(R. C. Smith & M. A. Demetriou, Eds.).

By: R. Smith* & M. Demetriou

Ed(s): R. Smith* & M. Demetriou

TL;DR: Research Directions in Distributed Parameter Systems is composed of eleven chapters, written by experts in their respective fields, on topics ranging from control of the Navier-Stokes equations to nondestructive evaluation - all of which are modeled by distributed parameters systems. (via Semantic Scholar)
Sources: NC State University Libraries, Crossref, NC State University Libraries
Added: August 6, 2018

2002 journal article

A coupled magnetomechanical model for magnetostrictive transducers and its application to Villari-effect sensors

Journal of Intelligent Material Systems and Structures, 13(11), 737–747.

By: M. Dapino, R. Smith, F. Calkins & A. Flatau

Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2002 journal article

Control of Open Bay Acoustics by Harmonic Mass Injection

International Journal of Aeroacoustics, 1(1), 65–81.

By: D. Bortz n, A. Rubio n, H. Banks n, A. Cain n & R. Smith n

TL;DR: This paper is focused on communicating an investigation into the use of numerical simulations combined with Proper Orthogonal Decomposition (POD) to optimize an active control system for an aircraft weapons bay application. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: June 30, 2019

2001 article

Inverse compensation for hysteresis in magnetostrictive transducers

MATHEMATICAL AND COMPUTER MODELLING, Vol. 33, pp. 285–298.

By: R. Smith n

author keywords: inverse compensation; hysteresis; magnetostrictive materials
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2000 journal article

A coupled structural-magnetic strain and stress model for magnetostrictive transducers

Journal of Intelligent Material Systems and Structures, 11(2), 135–152.

By: M. Dapino*, R. Smith n, L. Faidley* & A. Flatau*

Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2000 journal article

A domain wall model for hysteresis in piezoelectric materials

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 11(1), 62–79.

By: R. Smith* & Z. Ounaies

Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2000 journal article

Analysis and comparison of four anhysteretic polarization models for lead magnesium niobate

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 108(4), 1651–1662.

By: J. Piquette* & R. Smith n

MeSH headings : Acoustics; Humans; Models, Theoretical; Niobium; Oxides; Transducers
TL;DR: Four anhysteretic polarization models that have been used in the literature to evaluate data acquired from lead magnesium niobate are analyzed and compared and it is shown that it can be necessary to consider a sample to be an admixture of two distinct species of poles, in the sense that two polarization functions must be added together in order to accommodate the data. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2000 journal article

Energy-based hysteresis model for magnetostrictive transducers

IEEE TRANSACTIONS ON MAGNETICS, 36(2), 429–439.

By: F. Calkins*, R. Smith n & A. Flatau*

author keywords: hysteresis model; magnetorestrictive transducer
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2000 book

Industrial Mathematics: The 1998 CRSC Workshop

Philadelphia: SIAM.

Ralph Smith

Ed(s): P. Gremaud, Z. Li, R. Smith & H. Tran

Source: NC State University Libraries
Added: August 18, 2019

2000 book

Industrial Mathematics: The 1998 CRSC Workshop

SIAM.

Ralph Smith

Source: ORCID
Added: November 1, 2020

2000 journal article

Optimized design of switching amplifiers for piezoelectric actuators

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 11(11), 887–901.

By: S. Chandrasekaran, D. Lindner* & R. Smith*

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2000 journal article

Reduced-order model feedback control design: Numerical implementation in a thin shell model

IEEE TRANSACTIONS ON AUTOMATIC CONTROL, 45(7), 1312–1324.

By: H. Banks n, R. Rosario n & R. Smith n

author keywords: LQR feedback control; proper orthogonal decomposition; reduced-basis computational methods; thin shell dynamics
TL;DR: Reduced-order models employing the Lagrange and popular proper orthogonal decomposition (POD) reduced-basis methods in numerical approximation and feedback control of systems are presented and numerically tested. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2000 journal article

Structural magnetic strain model for magnetostrictive transducers

IEEE TRANSACTIONS ON MAGNETICS, 36(3), 545–556.

By: M. Dapino*, R. Smith n & A. Flatau*

author keywords: hysteresis; magnetomechanical model; magnetostrictive transducer
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

1999 journal article

Domain wall theory for ferroelectric hysteresis

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 10(3), 195–213.

By: R. Smith n & C. Hom*

Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

1998 journal article

A nonlinear optimal control method for magnetostrictive actuators

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 9(6), 468–486.

By: R. Smith n

Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

1998 journal article

Hysteresis Modeling in Magnetostrictive Materials Via Preisach Operators

Journal of Mathematical Systems, Estimation and Control, 8(2).

By: R. Smith

Sources: NC State University Libraries, ORCID
Added: July 10, 2019

1998 journal article

LQR control of thin shell dynamics: Formulation and numerical implementation

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 9(4), 301–320.

By: R. Del Rosario & R. Smith n

Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

1998 journal article

Utilization of coupling effects in compensator design for structural acoustic systems

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 103(2), 872–887.

By: H. Banks n, M. Demetriou* & R. Smith*

TL;DR: The quantification and utilization of coupling effects in a prototypical structural acoustic system are examined and demonstrate that in fully coupled systems, both mechanisms should be incorporated to accurately model system dynamics. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

1997 journal article

A Galerkin Method for Linear PDE Systems in Circular Geometries with Structural Acoustic Problems

SIAM Journal on Scientific Computing, 18(2), 371–402.

By: R. Smith*

author keywords: Galerkin method; PDEs in circular geometries; structural acoustics
TL;DR: A Galerkin method for systems of PDEs in circular geometries is presented with motivating problems being drawn from structural, acoustic, and structural acoustic applications and examples demonstrating the extension of the techniques to a fully coupled structural acoustic system are used to illustrate the flexibility of the method when approximating the dynamics of more complex systems. (via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: June 30, 2019

1997 journal article

Damage Detection as Inverse Problems for Distributed Parameter Systems: Computational Approaches

International Journal of Applied Electromagnetics and Mechanics, 8, 61–76.

By: H. Banks, R. Smith & Y. Zhang

Sources: NC State University Libraries, ORCID
Added: July 28, 2019

1997 journal article

Experimental confirmation of a PDE-based approach to design of feedback controls

SIAM JOURNAL ON CONTROL AND OPTIMIZATION, 35(4), 1263–1296.

By: H. Banks*, R. Smith*, D. Brown, R. Silcox & V. Metcalf

author keywords: feedback control; piezoceramic actuators; PDE model
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

1997 journal article

Numerical Recovery of Material Parameters in Euler-Bernoulli Beam Models

Journal of Mathematical Systems, Estimation and Control, 7(2), 157–195.

By: R. Smith, K. Bowers & C. Vogel

Sources: NC State University Libraries, ORCID
Added: July 28, 2019

1997 journal article

Spline approximation of thin shell dynamics

International Journal for Numerical Methods in Engineering, 40(15), 2807–2840.

By: R. Rosario n & R. Smith*

Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

1997 journal article

THE ESTIMATION OF MATERIAL AND PATCH PARAMETERS IN A PDE-BASED CIRCULAR PLATE MODEL

Journal of Sound and Vibration, 199(5), 777–799.

By: H. Banks n, R. Smith*, D. Brown*, V. Metcalf* & R. Silcox*

UN Sustainable Development Goal Categories
Sources: Crossref, NC State University Libraries
Added: June 30, 2019

1996 journal article

An H∞/MinMax Periodic Control in a 2-D Structural Acoustic Model with Piezoceramic Actuators

IEEE Transactions on Automatic Control, 41(7), 943–959.

By: H. Banks n, M. Demitriou n & R. Smith*

TL;DR: A feedback control computational methodology for reducing acoustic sound pressure levels in a two-dimensional cavity with a flexible boundary (a beam) and a summary of extensive computational efforts comparing output feedback to full state feedback and investigating the effect of the number and location of sensors on performance of the control is presented. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: July 28, 2019

1996 journal article

Inverse problems in smart material structures

Journal of Inverse and Ill-Posed Problems, 4(5).

By: H. Banks, R. Smith* & Y. Wang

Sources: Crossref, NC State University Libraries
Added: June 30, 2019

1996 journal article

Parameter estimation in a structural acoustic system with fully nonlinear coupling conditions

Mathematical and Computer Modelling, 23(4), 17–50.

By: H. Banks n & R. Smith*

author keywords: parameter identification; structural acoustics; nonlinear partial differential equations
TL;DR: A methodology for estimating physical parameters in a class of structural acoustic systems is presented, and strong consideration is given to the fact that the input operator is unbonded due to the discrete nature of the patches. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: June 30, 2019

1996 journal article

Robustness studies for H∞ feedback control in a structural acoustic model with periodic excitation

International Journal of Robust and Nonlinear Control, 6(5), 453–478.

By: H. Banks n, M. Demetriou n & R. Smith*

author keywords: structural/acoustics; H-infinity robust control; computational studies
Sources: Crossref, NC State University Libraries
Added: December 16, 2019

1996 book

Smart Material Structures: Modeling, Estimation and Control

Paris/Chichester: Masson/John Wiley.

By: H. Banks, R. Smith & Y. Wang

Sources: NC State University Libraries, ORCID
Added: July 28, 2019

1995 chapter

Active Control of Acoustic Pressure Fields Using Smart Material Technologies

In Flow Control (pp. 1–33).

By: H. Banks n & R. Smith*

Sources: Crossref, NC State University Libraries
Added: June 30, 2019

1995 journal article

The modeling of piezoceramic patch interactions with shells, plates, and beams

Quarterly of Applied Mathematics, 53(2), 353–381.

By: H. Banks n, R. Smith n & Y. Wang n

Sources: Crossref, NC State University Libraries
Added: June 30, 2019

1995 journal article

Well-Posedness of a Model for Structural Acoustic Coupling in a Cavity Enclosed by a Thin Cylindrical Shell

Journal of Mathematical Analysis and Applications, 191(1), 1–25.

By: H. Banks n & R. Smith n

Sources: Crossref, NC State University Libraries
Added: July 10, 2019

1994 journal article

Feedback control of noise in a 2-D nonlinear structural acoustics model

Discrete and Continuous Dynamical Systems, 1(1), 119–149.

By: R. Smith* & H. Banks

Sources: Crossref, NC State University Libraries
Added: June 30, 2019

1994 journal article

Modeling and Control of Acoustic Structure Interaction Problems Via Piezoceramic Actuators: 2-D Numerical Examples

Journal of Vibration and Acoustics, 116(3), 386.

By: H. Banks n, R. Silcox* & R. Smith*

UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: June 30, 2019

1993 journal article

Approximation Methods for Control of Structural Acoustics Models with Piezoceramic Actuators

Journal of Intelligent Material Systems and Structures, 4(1), 98–116.

By: H. Banks*, W. Fang*, R. Silcox* & R. Smith*

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: June 30, 2019

1993 chapter

Models for Control in Smart Material Structures

In Identification and Control in Systems Governed by Partial Differential Equations (pp. 26–44). Philadelphia: SIAM.

By: H. Banks & R. Smith

Sources: NC State University Libraries, ORCID
Added: July 28, 2019

1993 journal article

Sinc-Galerkin estimation of diffusivity in parabolic problems

Inverse Problems, 9(1), 113–135.

By: R. Smith* & K. Bowers*

Sources: Crossref, NC State University Libraries
Added: June 30, 2019

1992 journal article

A fully Sinc-Galerkin method for Euler-Bernoulli beam models

Numerical Methods for Partial Differential Equations, 8(2), 171–202.

By: R. Smith*, K. Bowers* & J. Lund*

Sources: Crossref, NC State University Libraries
Added: June 30, 2019

1992 journal article

The Sinc-Galerkin method for parameter-dependent self-adjoint problems

Applied Mathematics and Computation, 50(2-3), 175–202.

By: K. McArthur*, R. Smith*, J. Lund* & K. Bowers*

Sources: Crossref, NC State University Libraries
Added: June 30, 2019

1991 journal article

The Sinc-Galerkin Method for Fourth-Order Differential Equations

SIAM Journal on Numerical Analysis, 28(3), 760–788.

By: R. Smith*, G. Bogar, K. Bowers & J. Lund

author keywords: SINC-GALERKIN; 4TH-ORDER DIFFERENTIAL EQUATIONS
Sources: Crossref, NC State University Libraries
Added: June 30, 2019

Employment

Updated: March 13th, 2017 13:38

North Carolina State University Raleigh, North Carolina, US
Professor Mathematics

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