Works (142)

Updated: July 2nd, 2024 05:12

2024 article

Evaluating the impact of anatomical and physiological variability on human equivalent doses using PBPK models

Schacht, C. M., Meade, A. E., Bernstein, A. S., Prasad, B., Schlosser, P. M., Tran, H. T., & Kapraun, D. F. (2024, May 25). TOXICOLOGICAL SCIENCES.

By: C. Schacht*, A. Meade*, A. Bernstein*, B. Prasad*, P. Schlosser*, H. Tran n, D. Kapraun*

UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: ORCID, Web Of Science
Added: June 22, 2024

2023 article

Airplane Detection and Classification Based on Mask R-CNN and YOLO with Feature Engineering

INTELLIGENT SYSTEMS AND APPLICATIONS, VOL 2, Vol. 543, pp. 752–768.

By: A. Attarian*, M. Luo*, Y. Luo*, H. Tran n, X. Xu*, C. Yi*, Y. Yu*, F. Zhang*

author keywords: Airplane classification; Feature engineering; Mask R-CNN; YOLOv3
Sources: Web Of Science, NC State University Libraries
Added: December 12, 2022

2022 article

An XGBoost-Based Fitted Q Iteration for Finding the Optimal STI Strategies for HIV Patients

Yu, Y., & Tran, H. (2022, June 2). IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS, Vol. 6.

By: Y. Yu* & H. Tran n

author keywords: Viruses (medical); Immune system; Drugs; Numerical models; Subspace constraints; Mathematical models; Load modeling; Fitted Q iteration algorithm; human immunodeficiency virus (HIV); reinforcement learning; structured treatment interruption (STI) strategy; XGBoost regression
TL;DR: An XGBoost-based fitted Q iteration algorithm is proposed for finding the optimal structured treatment interruption (STI) strategies for HIV patients, and it is shown that this algorithm can obtain acceptable and optimal STI strategies with fewer training data. (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: June 20, 2022

2021 journal article

Deep learning and regression approaches to forecasting blood glucose levels for type 1 diabetes

BIOMEDICAL SIGNAL PROCESSING AND CONTROL, 69.

By: M. Zhang n, K. Flores n & H. Tran n

author keywords: Neural networks; Regression; Encoder decoder; Time series forecasting; Diabetes
TL;DR: A neural network model using an encoder-decoder architecture has the most stable performance and is able to recover missing dynamics in short time intervals and may enable a feasible solution with low computational cost for the time-dependent adjustment of artificial pancreas for diabetes patients. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 30, 2021

2019 article

An optimal control approach for blood pressure regulation during head-up tilt

Williams, N. D., Mehlsen, J., Tran, H. T., & Olufsen, M. S. (2019, April). BIOLOGICAL CYBERNETICS, Vol. 113, pp. 149–159.

By: N. Williams*, J. Mehlsen*, H. Tran n & M. Olufsen n

author keywords: Cardiovascular dynamics modeling; Head-up tilt; Non-pulsatile model; Orthostatic intolerance; Optimal control
MeSH headings : Blood Pressure / physiology; Cardiac Output / physiology; Heart Rate / physiology; Humans; Lower Extremity / physiology; Models, Cardiovascular; Nonlinear Dynamics; Posture / physiology; Tilt-Table Test; Vascular Resistance
TL;DR: Results show that the optimal control approach can predict time-varying quantities regulated by the cardiovascular control system, and shows the feasibility of using optimal control theory to compute physiological control variables, vascular resistance and cardiac contractility. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: April 2, 2019

2019 journal article

Cardiovascular dynamics during head-up tilt assessed via pulsatile and non-pulsatile models

Journal of Mathematical Biology, 79(3), 987–1014.

By: N. Williams*, R. Brady*, S. Gilmore n, P. Gremaud n, H. Tran n, J. Ottesen*, J. Mehlsen*, M. Olufsen n

author keywords: Cardiovascular dynamics modeling; Head-up tilt; Pulsatile versus non-pulsatile modeling; Parameter estimation; Orthostatic intolerance
MeSH headings : Adult; Blood Pressure; Cardiac Output / physiology; Heart Rate; Hemodynamics; Humans; Male; Models, Cardiovascular; Pulsatile Flow; Supine Position; Tilt-Table Test; Vascular Resistance / physiology
TL;DR: It is shown that mathematical modeling can be used to predict changes in cardiac contractility, vascular resistance, and arterial compliance, quantities that cannot be measured but are useful to assess the system’s state. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, Crossref
Added: August 19, 2019

2019 journal article

IMMUNOSUPPRESSANT TREATMENT DYNAMICS IN RENAL TRANSPLANT RECIPIENTS: AN ITERATIVE MODELING APPROACH

DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS-SERIES B, 24(6), 2781–2797.

By: N. Murad, H. Tran*, H. Banks*, R. Everett* & E. Rosenberg*

author keywords: Inverse problem; infection dynamics; differential equations; renal transplantation; immunosuppression therapy; iterative modeling process; BKV
TL;DR: This work analyzes and improves the current mathematical model by modifying it to be more biologically realistic and amenable for designing an adaptive treatment strategy for renal transplant recipients infected by BK virus. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: April 22, 2019

2019 journal article

Real-time implementation and analysis of a modified energy based controller for the swing-up of an inverted pendulum on a cart

EUROPEAN JOURNAL OF CONTROL, 50, 176–187.

By: E. Kennedy n, E. King n & H. Tran n

author keywords: Inverted pendulum; Energy based control; Lyapunov functions; Real-time implementation
TL;DR: A modified energy based swing-up controller using Lyapunov functions is derived using a more complex dynamical model for the single inverted pendulum (SIP) system than the simplified model that is most commonly used. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: December 9, 2019

2018 journal article

Acquisition War-Gaming Technique for Acquiring Future Complex Systems: Modeling and Simulation Results for Cost Plus Incentive Fee Contract

Mathematics, 6(3), 43.

By: T. Nguyen*, H. Tran n, A. Guillen*, T. Bui* & S. Matsunaga*

author keywords: game theory; Bayesian games; incentives; contract parameters; Cost plus Incentive Fee (CPIF); mathematical modelling; simulation; program and technical baseline (PTB); acquisition strategy; space systems
TL;DR: An innovative system engineering approach to model the Department of Defense (DoD) acquisition process and several optimization modules including simulation models using game theory and war-gaming concepts are presented. (via Semantic Scholar)
UN Sustainable Development Goal Categories
10. Reduced Inequalities (Web of Science)
Sources: Web Of Science, NC State University Libraries, Crossref
Added: August 6, 2018

2018 journal article

Detection of Bladder Contractions From the Activity of the External Urethral Sphincter in Rats Using Sparse Regression

IEEE Transactions on Neural Systems and Rehabilitation Engineering, 26(8), 1636–1644.

By: E. Rutter, C. Langdale, J. Hokanson, F. Hamilton, H. Tran*, W. Grill, K. Flores*

author keywords: LASSO; neural stimulation; bladder dysfunction; spectrogram
MeSH headings : Algorithms; Animals; Computer Simulation; Electromyography; Female; Models, Theoretical; Muscle Contraction / physiology; Pudendal Nerve; Rats; Rats, Wistar; Urethra / physiology; Urinary Bladder / physiology; Urinary Incontinence / rehabilitation
TL;DR: A novel method for prediction of bladder pressure using a time-dependent spectrogram representation of external urethral sphincter electromyographic (EUS EMG) activity and a least absolute shrinkage and selection operator regression model is proposed. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: July 20, 2019

2018 conference paper

Ensemble Kalman Filtering for Inverse Optimal Control

In S.-long Ao, O. Castillo, C. Douglas, D. D. Feng, & A. Korunsky (Eds.), International MultiConference of Engineers and Computer Scientists : IMECS 2018: 14-16 March, 2018, the Royal Garden Hotel, Kowloon, Hong Kong: Vol. II (pp. 526–530). Hong Kong: Newswood Limited, International Association of Engineers.

By: H. Tran & A. Arnold

Ed(s): S. Ao, O. Castillo, C. Douglas, D. Feng & A. Korunsky

Event: International MultiConference of Engineers and Computer Scientists : IMECS 2018 at Royal Garden Hotel, Kowloon, Hong Kong on March 14-16, 2018

Source: NC State University Libraries
Added: October 31, 2020

2018 chapter

Hepatitis C Viral Dynamics Using a Combination Therapy of Interferon, Ribavirin, and Telaprevir: Mathematical Modeling and Model Validation

In Hepatitis C - From Infection to Cure.

By: P. Aston*, K. Cranfield*, H. O’Farrell*, A. Cassenote*, C. Mendes-Correa*, A. Segurado*, P. Hoang n, G. Lankford n, H. Tran n

TL;DR: A mathematical model is introduced for Hepatitis C dynamics treated with the direct acting antiviral drug, telaprevir, alongside traditional interferon and ribavirin treatments to understand how this combination therapy affects the viral load of patients exhibiting different types of response. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: November 16, 2019

2018 journal article

Nonlinear Kalman filtering for censored observations

Applied Mathematics and Computation, 316, 155–166.

By: J. Arthur*, A. Attarian*, F. Hamilton n & H. Tran n

author keywords: Extended Kalman filter; Censored observation; Parameter estimation; Hepatitis C virus (HCV); Human immunodeficiency virus (HIV)
TL;DR: A modified version of the extended Kalman filter is developed to handle the case of censored observations in nonlinear systems and is validated in a simple oscillator system first, showing its ability to accurately reconstruct state variables and track system parameters when observations are censored. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, Crossref
Added: August 6, 2018

2018 journal article

Optimal control of immunosuppressants in renal transplant recipients susceptible to BKV infection

Optimal Control Applications and Methods, 40(2), 292–309.

By: N. Murad n, H. Tran n & H. Banks n

author keywords: BK virus; immunosuppression; Kalman filtering; optimal feedback control; receding horizon control; renal transplant
TL;DR: A feedback control formulation is designed to predict the optimal amount of immunosuppression required by renal transplant recipients in the context of infections caused by BK virus and concludes that, using the presented methodology, an individualized adaptive treatment schedule can be built for kidney transplant recipients. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, Crossref
Added: March 25, 2019

2018 journal article

Personalized mathematical model of endotoxin-induced inflammatory responses in young men and associated changes in heart rate variability

Mathematical Modelling of Natural Phenomena, 13(5), 42.

By: R. Brady n, D. Frank-Ito*, H. Tran n, S. Janum*, K. Møller*, S. Brix*, J. Ottesen*, J. Mehlsen*, M. Olufsen n

Ed(s): K. Maruta, S. Minaev, N. Il Kim, H. Im & V. Gubernov

author keywords: Acute inflammation; mathematical modeling; heart rate variability; parameter estimation
TL;DR: The observed correlation between the inflammatory response and HRV brings us a step further towards understanding if HRV predictions can be used as a marker for inflammation, potentially translating to identifying a non-invasive marker that can be use to detect the onset of sepsis. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries, Crossref
Added: January 21, 2019

2018 chapter

War-Gaming Applications for Achieving Optimum Acquisition of Future Space Systems

In Simulation and Gaming.

By: T. Nguyen, A. Guillen, S. Matsunaga, H. Tran* & T. Bui

TL;DR: The goal of this chapter is to apply the proposed war-gaming frameworks to develop and evaluate PTB solutions and associated acquisition strategies in the context of acquisition of future space systems. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: November 16, 2019

2017 journal article

A physiologically based pharmacokinetic model of vitamin D

Journal of Applied Toxicology, 37(12), 1448–1454.

By: M. Sawyer n, H. Tran n & M. Evans*

author keywords: vitamin D; PBPK; dynamic adipose partition coefficient; Hill equation; absorption; distribution; metabolism and excretion
MeSH headings : Adipose Tissue / metabolism; Administration, Oral; Calcifediol / blood; Calcifediol / metabolism; Cholecalciferol / administration & dosage; Cholecalciferol / blood; Cholecalciferol / pharmacokinetics; Dose-Response Relationship, Drug; Humans; Models, Biological; Seasons; Sunlight; Tissue Distribution / physiology
TL;DR: Through incorporating the optimized parameters with the adipose partition coefficient adaptation to the PBPK model, this study was able to fit serum concentration data for circulating vitamin D at all three supplementation concentrations within confidence intervals of the data. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: November 11, 2019

2017 journal article

Adaptive filtering for hidden node detection and tracking in networks

Chaos (Woodbury, N.Y.), 27(7).

By: F. Hamilton, B. Setzer, S. Chavez, H. Tran & A. Lloyd

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

2017 journal article

An Optimal Control Approach to Structured Treatment Interruptions for HIV Patients: A Personalized Medicine Perspective

Applied Mathematics, 08(07), 934–955.

By: A. Attarian* & H. Tran n

TL;DR: An optimal control approach to determine STI regimen for HIV patients was implemented in the context of the receding horizon control (RHC) using a mathematical model for the in-vivo dynamics of an HIV type 1 infection. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: November 11, 2019

2017 journal article

Feasibility of parameter estimation in hepatitis C viral dynamics models

JOURNAL OF INVERSE AND ILL-POSED PROBLEMS, 25(1), 69–80.

By: J. Arthur*, H. Tran n & P. Aston*

author keywords: Parameter estimation; expectation maximization; identifiability; sensitivity analysis
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2017 journal article

Mathematical and Statistical Model Misspecifications in Modeling Immune Response in Renal Transplant Recipients

Inverse Problems in Science and Engineering, 26(2), 1–18.

By: H. Tran n, R. Everett n, H. Banks n, S. Hu n & N. Murad n

author keywords: Renal transplant; BK virus; polyomavirus nephropathy; inverse problems; pseudo measurement errors; difference-based methods; model misspecification; statistical error model; 62P10; 92B99; 62G99; 37N15
TL;DR: This work examines uncertainty in clinical data from a kidney transplant recipient infected with BK virus and investigates mathematical model and statistical model misspecifications in the context of least squares methodology. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, Crossref, NC State University Libraries
Added: November 11, 2019

2017 conference paper

Real-Time Implementation of a LQR-Based Controller for the Stabilization of a Double Inverted Pendulum

In S.-long Ao, O. Castillo, C. Douglas, D. D. Feng, & A. Korunsky (Eds.), International MultiConference of Engineers and Computer Scientists : IMECS 2017: 15-17 March, 2017, the Royal Garden Hotel, Kowloon, Hong Kong: Vol. I (pp. 245–250). Hong Kong: Newswood Limited.

By: H. Tran & A. Bernstein

Ed(s): S. Ao, O. Castillo, C. Douglas, D. Feng & A. Korunsky

Event: International MultiConference of Engineers and Computer Scientists on March 15-17, 2017

Source: NC State University Libraries
Added: October 31, 2020

2017 journal article

Using Multi-Class Classification Methods to Predict Baseball Pitch Types

Journal of Sports Analytics, 4(1), 85–93.

By: G. Sidle n & H. Tran n

TL;DR: This work used data from three recent MLB seasons to compare individual pitcher predictions based on multi-class linear discriminant analysis, support vector machines, and classification trees to lead to the development of a real-time, live-game predictor. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: December 16, 2019

2017 conference paper

War-gaming application for future space systems acquisition: MATLAB implementation of war-gaming acquisition models and simulation results

In K. D. Pham & G. Chen (Eds.), Sensors and Systems for Space Applications X.

By: P. Vienhage*, H. Barcomb*, K. Marshall*, W. Black*, A. Coons n, H. Tran n, T. Nguyen*, A. Guillen* ...

Ed(s): K. Pham & G. Chen

Event: SPIE Defense + Security

author keywords: Unified Game-based Acquisition Framework; Advanced Game-based Mathematical Framework; Bayesian games; Program and Technical Baseline; Warfighter Capability; MATLAB; Nash equilibrium; Monte Carlo simulations; Fixed Price Seal Bid; Firm Fixed Price; Fixed Price Incentive Firm
TL;DR: The paper describes the MATLAB (MathWorks) programs that were developed during the REU workshop1 to implement The Aerospace Corporation developed Unified Game-based Acquisition Framework and Advanced Game - based Mathematical Framework and its associated War-Gaming Engine models. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: November 11, 2019

2016 conference paper

RFI modeling and prediction approach for SATOP applications: RFI prediction models

In K. D. Pham & G. Chen (Eds.), Sensors and Systems for Space Applications IX (Vol. 9838).

By: T. Nguyen*, H. Tran n, Z. Wang*, A. Coons n, C. Nguyen*, S. Lane*, K. Pham*, G. Chen*, G. Wang*

Ed(s): K. Pham* & G. Chen*

Event: SPIE Defense + Security

author keywords: RFI modeling and prediction; RFI prediction; Carrier synchronization loop; Signal-to-Noise Ratio (SNR); Unified S-Band; RFI estimating and predicting; Command; Bit Error Rate (BER)
TL;DR: The commands BER degradation model presented in this paper allows the ground system operator to estimate the optimum transmitted SNR to maintain a required command BER level in the presence of both friendly and un-friendly RFI sources. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, Crossref
Added: August 6, 2018

2016 conference paper

Real-Time Stabilization of a Single Inverted Pendulum Using a Power Series Based Controller

In G.-C. Yang, S.-I. Ao, X. Huang, & O. Castillo (Eds.), Transactions on engineering technologies : International MultiConference of Engineers and Computer Scientists 2015 (pp. 1–14). Singapore: Springer.

By: H. Tran & E. Kennedy

Ed(s): G. Yang, S. Ao, X. Huang & O. Castillo

Event: International MultiConference of Engineers and Computer Scientists at Hong Kong on March 18-20, 2015

Source: NC State University Libraries
Added: October 31, 2020

2016 conference paper

Swing-up of an Inverted Pendulum on a Cart Using a Modified Energy Based Approach

International MultiConference of Engineers and Computer Scientists : IMECS 2016 : 16-18 March, 2016, the Royal Garden Hotel, Kowloon, Hong Kong, I, 185–190. Hong Kong: Newswood Limited, International Association of Engineers.

By: H. Tran & E. Kennedy

Event: International MultiConference of Engineers and Computer Scientists : IMECS 2016 at Royal Garden Hotel, Kowloon, Hong Kong on March 16-18, 2016

Source: NC State University Libraries
Added: October 31, 2020

2015 conference paper

A Dynamic Feature Selection Based LDA Approach to Baseball Pitch Prediction

In X.-L. Li, T. Cao, E.-P. Lim, Z.-H. Zhou, T.-B. Ho, & D. Cheung (Eds.), Trends and Applications in Knowledge Discovery and Data Mining (pp. 125–137).

By: P. Hoang n, M. Hamilton*, J. Murray, C. Stafford* & H. Tran n

Ed(s): X. Li, T. Cao, E. Lim, Z. Zhou, T. Ho n & D. Cheung

Event: PAKDD 2015 Workshops: BigPMA, VLSP, QIMIE, DAEBH at Ho Chi Minh City, Vietnam on May 19-21, 2015

author keywords: Machine learning; Hypothesis testing; Feature selection; Pitch prediction; PITCHf/x; MLB; LDA; ROC
TL;DR: This work extends the classification to pitch prediction fastball or nonfastball by restricting the analysis to pre-pitch features by performing significant feature analysis and introducing a novel approach for feature selection. (via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2015 journal article

Optimization of Klystron Designs Using Deterministic Sampling Methods

IEEE Transactions on Electron Devices, 62(3), 1032–1036.

By: H. Tran n, G. Lankford n, M. Read*, R. Ives*, K. Reppert n, K. Cline*, J. Guzman*

author keywords: Design optimization; klystrons; numerical simulation; sampling methods
TL;DR: A method is presented for optimizing the design of klystron circuits that automates the selection of cavity positions, resonant frequencies, quality factors, R/Q and other circuit parameters to maximize the efficiency with required gain. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, Crossref
Added: August 6, 2018

2015 conference paper

RFI modeling and prediction approach for SATOPS applications

In K. D. Pham & G. Chen (Eds.), Sensors and Systems for Space Applications VIII (Vol. 9469).

By: T. Nguyen*, H. Tran n, Z. Wang*, A. Coons n, C. Nguyen*, S. Lane*, K. Pham, G. Chen*, G. Wang*

Ed(s): K. Pham & G. Chen*

Event: SPIE Defense + Security

author keywords: Friendly RFI; Unfriendly RFI; Detection; Prediction; Satellite Operations; Command; Quality-of-Service; Bit Error Rate; Synchronization; Unified-S-Band; Satellite Control Network; Interference Protection Criteria
TL;DR: The proposed frameworks allow the designer to estimate the optimum transmitted signal power to maintain a required USB SATOPS Quality-of-Service (QoS) in the presence of both friendly and unfriendly RFI sources. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, Crossref
Added: August 6, 2018

2015 conference paper

Real-Time Implementation of a Power Series Based Nonlinear Controller for the Balance of a Single Inverted Pendulum

International MultiConference of Engineers and Computer Scientists : IMECS 2015 : 18-20 March, 2015, the Royal Garden Hotel, Kowloon, Hong Kong, 1, 237–241. Hong Kong: Newswood Limited, International Association of Engineers.

Hien Tran

Event: IMECS 2015 at Hong Kong on March 18-20, 2015

Source: NC State University Libraries
Added: January 9, 2021

2015 conference paper

Recent advances in beam optics analyzer

2015 ieee international vacuum electronics conference (ivec).

By: T. Bui*, M. Read*, M. Lin*, R. Ives*, B. Tallis n & H. Tran n

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

2015 journal article

Stochastic nonlinear mixed effects: a metformin case study

Journal of Pharmacokinetics and Pharmacodynamics, 43(1), 85–98.

By: B. Matzuka n, J. Chittenden, J. Monteleone* & H. Tran n

author keywords: Population pharmacokinetics; Kalman filter; tochastic differential equations; Model development; Parameter estimation; Nonlinear mixed effects
MeSH headings : Algorithms; Computer Simulation; Cross-Over Studies; Delayed-Action Preparations; Humans; Hypoglycemic Agents / administration & dosage; Hypoglycemic Agents / pharmacokinetics; Metformin / administration & dosage; Metformin / pharmacokinetics; Nonlinear Dynamics; Randomized Controlled Trials as Topic; Stochastic Processes
TL;DR: The extended Kalman filter and unscented Kalman Filter algorithms were successfully implemented in NLME models using MATLAB with run time differences between the ODE and SDE methods comparable to the differences found by Kakhi [10] for their stochastic deconvolution. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Crossref, NC State University Libraries
Added: November 11, 2019

2015 journal article

Using Kalman Filtering to Predict Time-Varying Parameters in a Model Predicting Baroreflex Regulation During Head-Up Tilt

IEEE Transactions on Biomedical Engineering, 62(8), 1992–2000.

By: B. Matzuka n, J. Mehlsen*, H. Tran n & M. Olufsen n

author keywords: Baroreflex regulation; cardiovascular; DRAM; ensemble transform Kalman filter; head-up tilt; Kalman filtering; parameter estimation
MeSH headings : Algorithms; Baroreflex / physiology; Blood Pressure / physiology; Electrocardiography; Heart Rate / physiology; Humans; Male; Models, Cardiovascular; Posture / physiology; Signal Processing, Computer-Assisted
TL;DR: This study compares two methods predicting time-varying changes in cardiac contractility and vascular resistance during head-up tilt and shows that the ensemble transform Kalman filter (ETKF) has a significantly shorter computational time. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries, Crossref
Added: August 6, 2018

2014 conference paper

Applying Machine Learning Techniques to Baseball Pitch Prediction

In M. De Marsico, A. Tabbone, & A. Fred (Eds.), Proceedings of the 3rd International Conference on Pattern Recognition Applications and Methods (Vol. 1, pp. 520–527).

By: M. Hamilton, P. Hoang, L. Layne, J. Murray, D. Padget, C. Stafford, H. Tran*

Ed(s): M. De Marsico, A. Tabbone & A. Fred

Event: International Conference on Pattern Recognition Applications and Methods

TL;DR: This work applies several common machine learning classification methods to PITCHf/x data to classify pitches by type and performs significant feature analysis and introduces a novel approach for feature selection, achieving moderate improvement over former results. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: October 31, 2020

2014 chapter

Baseball pitch classification

In IAENG Transactions on Engineering Sciences (pp. 393–399).

By: A. Attarian, G. Danis, J. Gronsbell, G. Iervolino, L. Layne, D. Padgett, H. Tran

Sources: Crossref, NC State University Libraries
Added: January 3, 2020

2013 journal article

A Comparison of Feature Selection and Classification Algorithms in Identifying Baseball Pitches

International MultiConference of Engineers and Computer Scientists : IMECS 2013 : 13-15 March, 2013, the Royal Garden Hotel, Kowloon, Hong Kong, 263–268.

By: H. Tran, A. Attarian, G. Danis, J. Gronsbell & G. Iervolino

Ed(s): S. Ao, O. Castillo, C. Douglas, D. Feng & J. Lee

Event: International MultiConference of Engineers and Computer Scientists at Royal Garden Hotel, Kowloon, Hong Kong on March 13-15, 2013

Source: NC State University Libraries
Added: January 13, 2021

2013 article

Application of the Unscented Kalman Filtering to Parameter Estimation

MATHEMATICAL MODELING AND VALIDATION IN PHYSIOLOGY: APPLICATIONS TO THE CARDIOVASCULAR AND RESPIRATORY SYSTEMS, Vol. 2064, pp. 75–88.

By: A. Attarian n, J. Batzel*, B. Matzuka n & H. Tran n

TL;DR: This chapter illustrates the application of one approach to deal with nonlinear model dynamics, the so-called unscented Kalman filter, and shows how some of the tools for model validation discussed in other chapters of this volume can be used to improve the estimation process. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2013 conference paper

Cardiovascular Dynamics during Head-up Tilt assessed Via a Pulsatile and Non-pulsatile Model

Proceedings of the 3rd International Conference on Simulation and Modeling Methodologies, Technologies and Applications, 1, 673–680.

By: H. Tran*, N. Williams & M. Olufsen

Event: Special Session on Modelling and Simulation in Biology and Medicine

TL;DR: It is shown that mathematical modeling can be used to predict changes in cardiac contractility, vascular resistance, and arterial compliance, quantities that cannot be measured but are useful to assess the system’s state. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: February 10, 2020

2012 conference paper

A Kalman Filtering Based Approach for the Modeling of the Cardiovascular Regulation System

In W. Backfrieder, A. Bruzzone, F. Longo, V. Novak, & J. Rosen (Eds.), Proceeding of The 1st international workshop on innovative simulation for healthcare, I-WISH (pp. 107–112).

By: H. Tran, B. Matzuka, J. Mehlsen, M. Olufsen & N. Williams

Ed(s): W. Backfrieder, A. Bruzzone, F. Longo, V. Novak & J. Rosen

Event: International Workshop on Innovative Simulation for Healthcare at Vienna, Austria on September 19-21, 2012

Source: NC State University Libraries
Added: January 9, 2021

2012 conference paper

Global Sensitivity and Identifiability Analysis Applied to a Model Predicting Baroreflex Regulation During Head-up Tilt

In W. Backfrieder, A. Bruzzone, F. Longo, V. Novak, & J. Rosen (Eds.), Proceeding of The 1st international workshop on innovative simulation for healthcare, I-WISH (pp. 81–86).

By: C. Olsen, J. Mehlsen, J. Otteson, H. Tran & M. Olufsen

Ed(s): W. Backfrieder, A. Bruzzone, F. Longo, V. Novak & J. Rosen

Event: International Workshop on Innovative Simulation for Healthcare at Vienna, Austria on September 19-21, 2012

Source: NC State University Libraries
Added: January 9, 2021

2012 journal article

Modeling Red Blood Cell and Iron Dynamics in Patients with Chronic Kidney Disease

International Journal of Pure and Applied Mathematics, 75(1), 103–140.

By: H. Banks, K. Bliss & H. Tran

Source: NC State University Libraries
Added: January 9, 2021

2012 chapter

Optimal Control Theory

In A. Hastings & L. Gross (Eds.), Encyclopedia of Theoretical Ecology (pp. 519–523). Berkeley, CA: University of California Press.

By: H. Tran

Ed(s): A. Hastings & L. Gross

Source: NC State University Libraries
Added: January 13, 2021

2011 journal article

An SDRE-Based Approach for HIV Feedback Control and Control of Thin Film Growth in a CVD Reactor

IFAC Proceedings Volumes, 44(1), 9601–9606.

By: H. Banks n, S. Beeler*, H. Kwon*, B. Lewis*, J. Toivanen* & H. Tran n

UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: January 3, 2020

2011 journal article

Receding Horizon Control of HIV

OPTIMAL CONTROL APPLICATIONS & METHODS, 32(6), 681–699.

By: J. David n, H. Tran n & H. Banks n

author keywords: HIV model; Receding Horizon Control; extended Kalman filter; state estimator
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2010 journal article

A Multicompartment Liver-based Pharmacokinetic Model for Benzene and its Metabolites in Mice

BULLETIN OF MATHEMATICAL BIOLOGY, 72(3), 507–540.

By: C. Manning n, P. Schlosser* & H. Tran n

author keywords: Benzene metabolism model; Ordinary differential equations; Existence and uniqueness; Inverse problems
MeSH headings : Animals; Benzene / pharmacokinetics; Cytochrome P-450 CYP2E1 / metabolism; Glutathione / metabolism; Liver / enzymology; Liver / metabolism; Mice; Models, Biological
TL;DR: This study shows that the multicompartment metabolism model does improve predictions over the previous model and that in vitro metabolic constants can be successfully extrapolated to predict in vivo data for benzene metabolism and dosimetry. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2010 journal article

A comparison of nonlinear filtering approaches in the context of an HIV model

Mathematical Biosciences and Engineering, 7(2), 213–236.

By: H. Banks, S. Hu, Z. Kenz & H. Tran

author keywords: extended Kalman filter; unscented Kalman filter; Gauss-Hermite filter; HIV
MeSH headings : Antiretroviral Therapy, Highly Active / methods; CD4 Lymphocyte Count; Computer Simulation; Data Interpretation, Statistical; HIV / physiology; HIV Infections / drug therapy; HIV Infections / immunology; HIV Infections / virology; Humans; Models, Biological; Nonlinear Dynamics
TL;DR: Three different filtering methods are compared for state-only and coupled state and parameter estimation when used with log state variables of a model of the immunologic response to the human immunodeficiency virus (HIV) in individuals. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: January 3, 2020

2010 journal article

Design of Doubly Convergent Multiple-Beam Electron Guns

IEEE TRANSACTIONS ON PLASMA SCIENCE, 38(6), 1337–1344.

By: R. Ives*, A. Attarian n, W. Tallis n, C. Andujar n, V. Forstall*, H. Tran n, M. Read*, T. Bui*

author keywords: Computer optimization; electron guns; multiple-beam gun; multiple-beam klystron
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2009 journal article

Computational design of asymmetric electron beam devices

IEEE Transactions on Electron Devices, 56(5), 753–761.

By: R. Ives*, A. Attarian n, T. Bui*, M. Read*, J. David n, H. Tran n, W. Tallis n, S. Davis* ...

author keywords: Computer optimization; electron beam; electron gun; multiple beam; RF sources; sheet beam
TL;DR: Optimization techniques to automate the most time-consuming tasks of the design, which is searching the available parameter space to optimize performance, are described. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: NC State University Libraries
Added: October 7, 2019

2009 journal article

HIV Model Analysis and Estimation Implementation Under Optimal Control Based Treatment Strategies

International Journal of Pure and Applied Mathematics, 57(3), 357–392.

By: J. David, H. Tran & H. Banks

Source: NC State University Libraries
Added: January 9, 2021

2009 book

Mathematical and experimental modeling of physical and biological processes

Boca Raton : CRC Press.

By: H. Banks & H. Tran

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

2009 conference paper

Modeling cerebral blood flow and regulation

2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Presented at the 2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society.

By: M. Aoi n, P. Gremaud n, H. Tran n, V. Novak* & M. Olufsen n

Event: 2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society

MeSH headings : Blood Flow Velocity / physiology; Blood Pressure / physiology; Brain / blood supply; Brain / physiology; Cerebral Arteries / physiology; Cerebrovascular Circulation / physiology; Computer Simulation; Feedback, Physiological / physiology; Humans; Models, Biological
TL;DR: One model characterises cerebral autoregulation, the other describes the beat-to-beat distribution of blood flow to the major regions of the brain, and both models have been validated against experimental data from a healthy young subject. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Sources: Crossref, NC State University Libraries
Added: January 3, 2020

2008 journal article

A respiratory system model: Parameter estimation and sensitivity analysis

CARDIOVASCULAR ENGINEERING, 8(2), 120–134.

By: M. Fink*, J. Batzel* & H. Tran n

author keywords: respiratory system; mathematical models; sensitivity analysis; parameter identification
MeSH headings : Carbon Dioxide / metabolism; Computer Simulation; Feedback, Physiological / physiology; Humans; Lung / physiology; Models, Biological; Oxygen / metabolism; Pulmonary Gas Exchange / physiology; Reproducibility of Results; Respiratory Mechanics / physiology; Sensitivity and Specificity
TL;DR: This paper considers a simple model of the respiratory control system and describes issues related to numerical estimates of key parameters involved in respiratory function such as central and peripheral control gains, transport delay, and lung compartment volumes, and examines methods for studying how to improve the parameter estimation process. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2008 journal article

Computer optimized design of electron guns

IEEE TRANSACTIONS ON PLASMA SCIENCE, 36(1), 156–168.

By: J. David n, R. Ives*, H. Tran n, T. Bui* & M. Read*

author keywords: beam optics analysis; computer optimization; electron gun; implicit filtering; klystron; Nelder-Mead; optimization; simulation; traveling wave tube
TL;DR: This paper considers the problem of designing electron guns using computer optimization techniques, and several different design parameters are manipulated while considering multiple design criteria, including beam and gun properties. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2008 conference paper

Computer optimized design of electron guns

2008 IEEE International Vacuum Electronics Conference. Presented at the 2008 IEEE International Vacuum Electronics Conference (IVEC).

By: R. Ives*, T. Bui*, M. Read*, J. David n, A. Attarian n & H. Tran n

Event: 2008 IEEE International Vacuum Electronics Conference (IVEC)

TL;DR: This approach uses advanced solid modeling CAD programs capable of controlling geometrical parameters with design tables manipulated by an optimization control program to develop optimization techniques for advanced, 3D, electron guns. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: January 3, 2020

2008 conference paper

Implementation of Computer Optimization for Design of Electron Guns

'Proceedings of the 9th IEEE International Vacuum Electronics Conference. Presented at the 9th IEEE International Vacuum Electronics Conference, Monterey, CA.

By: J. David, R. Ives, H. Tran, T. Bui, M. Read, A. Attarian, M. Posth

Event: 9th IEEE International Vacuum Electronics Conference at Monterey, CA on April 22-24, 2008

Source: NC State University Libraries
Added: January 9, 2021

2008 conference paper

Implementation of computer optimization for design of electron guns

2008 33rd International Conference on Infrared, Millimeter and Terahertz Waves. Presented at the 2008 33rd International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2008).

By: R. Ives*, T. Bui*, A. Attarian n, S. Davis n, S. Gadson n, W. Tallis n, H. Tran n, M. Read*, M. Posth*

Event: 2008 33rd International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2008)

TL;DR: Current implementation of a magnetic solver into a 3D finite element electron beam trajectory code is allowing optimized design of the electrostatic, optical and magnetic configuration of 3D device. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: January 3, 2020

2008 article

Introduction to the special issues: Short-term cardiovascular-respiratory control mechanisms

Batzel, J. J., Novak, V., Kappel, F., Olufsen, M. S., & Tran, H. T. (2008, March). CARDIOVASCULAR ENGINEERING, Vol. 8, pp. 1–4.

By: J. Batzel*, V. Novak*, F. Kappel*, M. Olufsen n & H. Tran n

MeSH headings : Animals; Cardiovascular Physiological Phenomena; Computer Simulation; Feedback / physiology; Humans; Models, Biological; Respiratory Physiological Phenomena
TL;DR: This and the following issue of Cardiovascular Engineering are special issues reflecting research discussed during an interdisciplinary focused workshop entitled Short-term Cardiovascular–Respiratory Control Mechanisms. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2008 journal article

Modeling heart rate regulation - Part I: Sit-to-stand versus head-up tilt

CARDIOVASCULAR ENGINEERING, 8(2), 73–87.

By: M. Olufsen n, A. Alston n, H. Tran n, J. Ottesen* & V. Novak*

author keywords: mathematical modeling; heart rate regulation; sensitivity analysis
MeSH headings : Aged; Baroreflex / physiology; Blood Pressure / physiology; Computer Simulation; Feedback, Physiological / physiology; Female; Head / physiology; Heart Rate / physiology; Humans; Male; Models, Cardiovascular; Posture / physiology; Tilt-Table Test / methods
TL;DR: During head-up tilt, the baseline firing-rate is larger than during sit-to-stand and that the combined effect of vestibular and central command stimulation of muscle sympathetic nerve activity is less pronounced than during sitting to standing. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2008 journal article

Sensitivity analysis and model assessment: Mathematical models for arterial blood flow and blood pressure

CARDIOVASCULAR ENGINEERING, 8(2), 94–108.

By: L. Ellwein n, H. Tran n, C. Zapata n, V. Novak n & M. Olufsen n

author keywords: cardiovascular modeling; sensitivity analysis; model reduction; parameter estimation
MeSH headings : Algorithms; Arteries / physiology; Blood Flow Velocity / physiology; Blood Pressure / physiology; Computer Simulation; Diagnosis, Computer-Assisted / methods; Models, Cardiovascular; Posture / physiology; Reproducibility of Results; Sensitivity and Specificity
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2008 journal article

Sensory irritation response in rats: Modeling, analysis and validation

BULLETIN OF MATHEMATICAL BIOLOGY, 70(2), 555–588.

By: K. Yokley n, H. Tran n & P. Schlosser*

author keywords: sensory response; PBPK; formaldehyde
MeSH headings : Animals; Computer Simulation; Dose-Response Relationship, Drug; Feedback, Physiological; Formaldehyde / toxicity; Gases / toxicity; Hypoventilation / etiology; Hypoventilation / physiopathology; Hypoventilation / veterinary; Inhalation Exposure; Irritants / toxicity; Models, Biological; Neuroepithelial Cells / drug effects; Neuroepithelial Cells / physiology; Pulmonary Ventilation / drug effects; Rats; Respiration / drug effects; Respiratory System / drug effects; Respiratory System / innervation; Respiratory System / physiopathology; Sensation / drug effects; Sensation / physiology; Trigeminal Nerve / drug effects; Trigeminal Nerve / physiopathology
TL;DR: A mathematical model is created to describe how the presence of irritants affects respiration in the rat and predicts the formaldehyde data well, and is thought to be a reasonable description of the physiological system of sensory irritation. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2008 book

Special Issues: Short-term Cardiovascular–Respiratory Control Mechanisms

In Journal of Cardiovascular Engineering (Vol. 9, pp. 1–71).

Hien Tran

Ed(s): J. Batzel, V. Novak, F. Kappel, M. Olufsen & H. Tran

Source: NC State University Libraries
Added: January 9, 2021

2007 journal article

A delayed nonlinear PBPK model for genistein dosimetry in rats

BULLETIN OF MATHEMATICAL BIOLOGY, 69(1), 93–117.

By: M. Zagera, P. Schlosser* & H. Tran n

author keywords: genistein; biliary excretion; pharmacokinetics; delay-differential equations
MeSH headings : Animals; Bile / metabolism; Biliary Tract / drug effects; Biliary Tract / metabolism; Genistein / pharmacokinetics; Genistein / pharmacology; Models, Biological; Nonlinear Dynamics; Rats
TL;DR: A physiologically based pharmacokinetic (PBPK) model that focuses on biliary excretion with the goal of accurately simulating the observed suppression of genistein is described. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2007 monograph

Cardiovascular and Respiratory Systems

By: J. Batzel, F. Kappel, D. Schneditz & H. Tran*

TL;DR: The cardiovascular system under an ergometric workload and the nonlinear feedback law are studied, which shows clear patterns in the response of the immune system to changes in pressure. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: January 3, 2020

2007 conference paper

Computer optimization of electron gun designs

2007 Joint 32nd International Conference on Infrared and Millimeter Waves and the 15th International Conference on Terahertz Electronics. Presented at the 2007 Joint 32nd International Conference on Infrared and Millimeter Waves and the 15th International Conference on Terahertz Electronics (IRMMW-THz).

By: R. Ives*, T. Bui*, J. David n, H. Tran n & M. Read*

Event: 2007 Joint 32nd International Conference on Infrared and Millimeter Waves and the 15th International Conference on Terahertz Electronics (IRMMW-THz)

Sources: Crossref, NC State University Libraries
Added: January 5, 2020

2007 journal article

Enhanced features for design of traveling wave tubes using CHRISTINE-1D

IEEE TRANSACTIONS ON PLASMA SCIENCE, 35(4), 1056–1064.

By: J. David n, C. Kory*, H. Tran n, R. Ives* & D. Chernin*

author keywords: DIviding RECTangles (DIRECT); folded waveguide slow-wave circuit; goal functions; Nelder-Mead; optimization; traveling wave tubes (TWTs)
TL;DR: The objectives of this paper are to investigate optimization techniques that may be better suited for this problem (for example, simplex type methods such as Nelder-Mead and Dividing Rectangles); to allow optimization of nonhelix TWTs; and to implement new optimization goal functions. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2007 journal article

Nonlinear feedback controllers and compensators: a state-dependent Riccati equation approach

COMPUTATIONAL OPTIMIZATION AND APPLICATIONS, 37(2), 177–218.

By: H. Banks n, B. Lewis* & H. Tran n

author keywords: nonlinear feedback control; nonlinear compensator; state-dependent Riccati equations
TL;DR: This paper addresses the effectiveness and potential of the SDRE technique for the design of nonlinear compensator-based feedback controllers and the asymptotic convergence of the estimator and the compensated system. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2007 article

Real-time implementation of a frequency shaping controller on a cantilever beam

APPLIED NUMERICAL MATHEMATICS, Vol. 57, pp. 778–790.

By: B. Lewis* & H. Tran n

TL;DR: The real time implementation of a control methodology for the attenuation of beam vibrations in a smart structure paradigm caused by a narrow-band exogenous force is presented using real-time partial state measurements. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2007 journal article

Subset selection for parameter estimation in an HIV model

PAMM, 7(1), 1121501–1121502.

By: M. Fink*, A. Attarian n & H. Tran n

UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: January 5, 2020

2006 journal article

A state-dependent Riccati equation-based estimator approach for HIV feedback control

OPTIMAL CONTROL APPLICATIONS & METHODS, 27(2), 93–121.

By: H. Banks n, H. Kwon*, J. Toivanen n & H. Tran n

author keywords: multidrug therapies; feedback control; estimator; HIV model; SDRE
TL;DR: By anticipation of and response to the disease progression, the dynamic multidrug strategy reduces the viral load, increases the CD4+ T‐cell count and improves the immune response. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2006 conference paper

Computer Optimized Gun Design

2006 Joint 31st International Conference on Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics. Presented at the >2006 Joint 31st International Conference on Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics.

By: R. Ives*, M. Read*, T. Bui*, J. David* & H. Tran*

Event: >2006 Joint 31st International Conference on Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics

TL;DR: This presentation described computer optimization in the 3D trajectory code beam optics analysis (BOA) because meshing in BOA is completely automatic, allowing the program to be controlled by the optimization routines. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: January 5, 2020

2006 conference paper

Dynamic Multidrug Therapies for HIV: Feedback and Structured Treatment Interruption Control Approaches

MTNS 2006 : proceedings of the 17th international symposium on mathematical theory of networks and systems, Kyoto, Japan, 24-28.07.2006. Presented at the 17th International Symposium on Mathematical Theory of Networks and Systems, Kyoto International Conference Hall, Kyoto, Japan.

By: H. Tran, H. Banks, J. David, J. Toivanen & H. Kwon

Event: 17th International Symposium on Mathematical Theory of Networks and Systems at Kyoto International Conference Hall, Kyoto, Japan on July 24-28, 2006

Source: NC State University Libraries
Added: January 11, 2021

2006 journal article

Modeling baroreflex regulation of heart rate during orthostatic stress

AMERICAN JOURNAL OF PHYSIOLOGY-REGULATORY INTEGRATIVE AND COMPARATIVE PHYSIOLOGY, 291(5), R1355–R1368.

By: M. Olufsen*, H. Tran*, J. Ottesen, L. Lipsitz & V. Novak

author keywords: mathematical modeling; heart rate control; baroreflex function; sympathetic and parasympathetic responses; vestibulo-sympathetic reflex
MeSH headings : Adult; Aged; Aged, 80 and over; Baroreflex / physiology; Blood Pressure / physiology; Dizziness / physiopathology; Female; Fingers / blood supply; Heart Rate / physiology; Humans; Hypertension / physiopathology; Male; Middle Aged; Models, Theoretical
TL;DR: A mathematical model that can predict the dynamics of heart rate regulation in response to postural change from sitting to standing is presented and it is demonstrated that this model can accurately predict heart rate dynamics observed in data obtained from healthy young, healthy elderly, and hypertensive elderly subjects. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2006 journal article

Physiologically-based pharmacokinetic modeling of benzene in humans: A Bayesian approach

RISK ANALYSIS, 26(4), 925–943.

By: K. Yokley n, H. Tran*, K. Pekari, S. Rappaport, V. Riihimaki, N. Rothman, S. Waidyanatha, P. Schlosser

author keywords: Bayesian; benzene; dosimetry; human; metabolism; PBPK; variability
TL;DR: A human physiologically‐based pharmacokinetic (PBPK) model that quantifies tissue doses of benzene and its key metabolites, benzene oxide, phenol, and hydroquinone after inhalation and oral exposures is described. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2005 journal article

Blood pressure and blood flow variation during postural change from sitting to standing: model development and validation

JOURNAL OF APPLIED PHYSIOLOGY, 99(4), 1523–1537.

By: M. Olufsen n, J. Ottesen, H. Tran*, L. Ellwein*, L. Lipsitz & V. Novak

author keywords: cardiovascular system; mathematical modeling; cerebral blood flow; gravitational effect; autonomic regulation; cerebral autoregulation
MeSH headings : Autonomic Nervous System / physiology; Blood Circulation / physiology; Blood Pressure / physiology; Cerebrovascular Circulation / physiology; Homeostasis; Humans; Linear Models; Models, Cardiovascular; Posture / physiology
TL;DR: A mathematical model is presented that can predict dynamic changes in beat-to-beat arterial blood pressure and middle cerebral artery blood flow velocity during postural change from sitting to standing and is in agreement with physiological data from a young subject during postures change from Sitting to standing. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2005 journal article

HIV dynamics: Modeling, data analysis, and optimal treatment protocols

JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS, 184(1), 10–49.

By: B. Adams n, H. Banks n, M. Davidian n, H. Kwon n, H. Tran n, S. Wynne n, E. Rosenberg*

author keywords: HIV models; parameter estimation; data and model reduction; structured treatment interruptions; optimal control
TL;DR: An overview of some concepts and methodologies useful in modeling HIV pathogenesis including parameter estimation, data reduction and representation, and optimal control relative to STI are presented. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2005 journal article

Reduced-order-based feedback control of the Kuramoto–Sivashinsky equation

Journal of Computational and Applied Mathematics, 173(1), 1–19.

By: C. Lee* & H. Tran n

author keywords: viscous film flows; Kuramoto-Sivashinsky equation; nonlinear feedback control; approximate inertial manifold; proper orthogonal decomposition
Sources: Web Of Science, NC State University Libraries, Crossref
Added: August 6, 2018

2004 journal article

Design of an electron gun using computer optimization

IEEE TRANSACTIONS ON PLASMA SCIENCE, 32(3), 1242–1250.

By: B. Lewis n, H. Tran n, M. Read* & R. Ives*

author keywords: cathode shape optimization; electron gun; optimal shape design; optimization techniques
TL;DR: The methods of shape optimization are used to design the cathode of an electron gun and the dynamical equations modeling the electron particle path as well as the generalized shape optimization problem will be presented. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2004 journal article

Dynamic multidrug therapies for HIV: Optimal and STI control approaches

Mathematical Biosciences and Engineering, 1(2), 223–241.

By: B. Adams*, H. Banks*, H. Kwon* & H. Tran n

TL;DR: A dynamic mathematical model is formulated that describes the interaction of the immune system with the human immunodeficiency virus and that permits drug "cocktail" therapies and supports a scenario in which STI therapies can lead to long-term control of HIV by the immune response system after discontinuation of therapy. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2004 journal article

Existence-uniqueness and monotone approximation for an erythropoiesis age-structured model

JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS, 289(2), 530–544.

By: A. Ackleh*, K. Deng*, C. Cole* & H. Tran n

author keywords: erythropoiesis; age-structured model; monotone approximation; existence uniqueness
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2004 conference paper

From Concept to Real-time Implementation: POD Based Reduced Order Control of a Cantilever Beam

In B. De Moor, B. Motmans, J. Willems, P. Van Dooren, & V. Blondel (Eds.), Proceedings of the 16th International Symposium on Mathematical Theory of Networks and Systems (MTNS 2004).

By: H. Tran & B. Lewis

Ed(s): B. De Moor, B. Motmans, J. Willems, P. Van Dooren & V. Blondel

Event: 16th International Symposium on Mathematical Theory of Networks and Systems(MTNS 2004) at Catholic University of Leuven (K.U.Leuven-Belgium) on July 5-9, 2004

Source: NC State University Libraries
Added: January 11, 2021

2004 journal article

Modeling Cerebral Blood Flow Control During Posture Change from Sitting to Standing

Cardiovascular Engineering, 4(1), 47–58.

By: M. Olufsen n, H. Tran n & J. Ottesen*

TL;DR: A mathematical model is presented that can predict blood flow and pressure during posture change from sitting to standing and uses a compartmental approach to describe pulsatile blood flow velocity and pressure in a number of compartments representing the systemic circulation. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: July 20, 2019

2004 journal article

Modeling and optimal regulation of erythropoiesis subject to benzene intoxication

MATHEMATICAL BIOSCIENCES AND ENGINEERING, 1(1), 15–48.

By: H. Banks n, C. Cole*, P. Schlosser n & H. Tran n

author keywords: hematopoiesis; age-structured model; existence and uniqueness; optimal control
TL;DR: This investigation proved the existence and uniqueness of the solution of the system of coupled partial and ordinary differential equations, formulated an optimal control problem for the control of erythropoiesis and performed numerical simulations to compare the performance of the optimal feedback law and another feedback function based on the Hill function. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2003 chapter

A well-posedness Result for a Shear Wave Propagation Model

In Control and Estimation of Distributed Parameter Systems (pp. 25–40).

By: H. Banks n, H. Tran n & S. Wynne n

Sources: Crossref, NC State University Libraries
Added: February 10, 2020

2003 conference paper

Beam optics analysis - a 3D finite element charged particle code with adaptive meshing

Third IEEE International Vacuum Electronics Conference (IEEE Cat. No.02EX524). Presented at the Third IEEE International Vacuum Electronics Conference.

By: T. Bui*, B. Vogler*, L. Ives*, M. Shephard*, O. Klaas n, J. Remacle n, D. Kapraun, H. Tran*

Event: Third IEEE International Vacuum Electronics Conference

Sources: Crossref, NC State University Libraries
Added: January 5, 2020

2003 journal article

Development of a biologically-based controlled growth and differentiation model for developmental toxicology

JOURNAL OF MATHEMATICAL BIOLOGY, 46(1), 1–16.

By: S. Whitaker*, H. Tran* & C. Portier

author keywords: teratology; multistate process; cellular kinetics; numerical simulation
MeSH headings : Animals; Cell Differentiation / physiology; Cell Division / physiology; Markov Chains; Models, Biological; Stem Cells / cytology; Stem Cells / physiology; Stochastic Processes; Toxicology / methods
TL;DR: A mathematical model is developed with a highly controlled birth and death process for precursor cells that is both biologically- and statistically-based and easily amenable to the expansion of more complicated models of the developmental process such as the one presented here. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2003 journal article

Modeling of HPA and HPA linearization through a predistorter: Global Broadcasting Service applications

IEEE TRANSACTIONS ON BROADCASTING, 49(2), 132–141.

By: T. Nguyen*, J. Yoh*, C. Lee*, H. Tran n & D. Johnson*

author keywords: Global Broadcasting Service; high power amplifier; predistorter
TL;DR: A technique to linearize the high power amplifier (HPA) through a predistorter (PD) based on the extension of Saleh's model for HPA and a simple linear-log model is presented. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2003 conference paper

SCATTER - a new computer code for modeling reflected electrons from surfaces

Third IEEE International Vacuum Electronics Conference (IEEE Cat. No.02EX524). Presented at the Third IEEE International Vacuum Electronics Conference.

By: D. Kapraun n, H. Tran n, R. Ives*, W. Vogler* & T. Bui*

Event: Third IEEE International Vacuum Electronics Conference

TL;DR: The success of the effort resulted in a stand-alone code that could be use to investigate the effect of various materials and coatings to reduce the emission and there by achieve higher depressed collector efficiencies. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: January 5, 2020

2003 conference paper

State Estimation and Tracking Control of Nonlinear Dynamical Systems

In W. Desch, F. Kappel, & K. Kunisch (Eds.), Control and Estimation of Distributed Parameter Systems (pp. 1–24).

By: H. Banks n, S. Beeler* & H. Tran n

Ed(s): W. Desch, F. Kappel & K. Kunisch

Event: 8th International Conference on Control of Diagnostics of Processes and Systems at Graz, Austria

Sources: NC State University Libraries, NC State University Libraries
Added: January 13, 2021

2002 conference paper

Diversity and Combining Techniques for 2G and 3G PCS Systems

20th AIAA International Communication Satellite Systems Conference and Exhibit. Presented at the 20th AIAA International Communication Satellite Systems Conference and Exhibit.

By: T. Nguyen*, H. Tran n, J. Yoh*, H. Nguyen* & B. Lewis n

Event: 20th AIAA International Communication Satellite Systems Conference and Exhibit

Sources: Crossref, NC State University Libraries
Added: January 5, 2020

2002 journal article

Modeling and Computation of Propagating Waves from Coronary Stenoses

Computational & Applied Mathematics, 21(3), 767–788.

By: H. Banks, J. Barnes, A. Eberhardt, H. Tran & S. Wynne

Source: NC State University Libraries
Added: January 11, 2021

2002 journal article

Proper orthogonal decomposition for flow calculations and optimal control in a horizontal CVD reactor

QUARTERLY OF APPLIED MATHEMATICS, 60(4), 631–656.

By: H. Ly n & H. Tran n

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

2002 journal article

Proper orthogonal decomposition-based control of transverse beam vibrations: Experimental implementation

IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, 10(5), 717–726.

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

author keywords: Euler-Bernoulli beam equation; feedback control; linear quadratic Gaussian (LQG); proper orthogonal decomposition (POD); reduced order model
TL;DR: Linear quadratic Gaussian compensator control of transverse vibrations was implemented on an aluminum cantilevered beam in a "smart structure" paradigm and experimental results indicate that POD-based control achieves comparable control attenuation with full-order model- based control. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2002 conference paper

RFI modeling of satellite communications

MILCOM 2000 Proceedings. 21st Century Military Communications. Architectures and Technologies for Information Superiority (Cat. No.00CH37155). Presented at the IEEE Military Communications Conference (MILCOM'00).

By: H. Tran n, J. Yoh*, T. Nguyen*, D. Johnson* & C. Lee*

Event: IEEE Military Communications Conference (MILCOM'00)

Sources: Crossref, NC State University Libraries
Added: February 10, 2020

2002 journal article

Reduced order modeling and control of thin film growth in an HPCVD reactor

SIAM JOURNAL ON APPLIED MATHEMATICS, 62(4), 1251–1280.

By: H. Banks*, S. Beeler, G. Kepler* & H. Tran*

author keywords: chemical vapor deposition; reduced order model; nonlinear feedback tracking control; nonlinear compensator; state-dependent Riccati equations
TL;DR: This paper describes the development of a reduced order model-based feedback control methodology for regulation of the growth of thin films in a high-pressure chemical vapor deposition (HPCVD) reactor. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2002 conference paper

Survey on Diversity and Combining Techniques

20th AIAA International Communication Satellite Systems Conference and Exhibit. Presented at the 20th AIAA International Communication Satellite Systems Conference and Exhibit.

By: T. Nguyen*, H. Nguyen*, H. Tran n, L. Jocic* & B. Lewis n

Event: 20th AIAA International Communication Satellite Systems Conference and Exhibit

Sources: Crossref, NC State University Libraries
Added: January 5, 2020

2002 conference paper

The Human Respiratory Control System: Models, Applications, and Analysis

VACETS VTIC 2002 : George Mason University, May 10-11, 2002 : proceedings. Presented at the The Fourth Vietnamese Association for Computing, Engineering Technology, and Science. International Conference (VTIC 2002), George Mason University, Fairfax, Virginia, USA.

By: H. Tran

Event: The Fourth Vietnamese Association for Computing, Engineering Technology, and Science. International Conference (VTIC 2002) at George Mason University, Fairfax, Virginia, USA on May 10-11, 2002

Source: NC State University Libraries
Added: January 11, 2021

2002 conference paper

User-friendly, economical, 3D charged particle code with adaptive meshing

IEEE Conference Record - Abstracts. PPPS-2001 Pulsed Power Plasma Science 2001. 28th IEEE International Conference on Plasma Science and 13th IEEE International Pulsed Power Conference (Cat. No.01CH37255). Presented at the IEEE Conference Record - Abstracts. PPPS-2001 Pulsed Power Plasma Science 2001. 28th IEEE International Conference on Plasma Science and 13th IEEE International Pulsed Power Conference.

By: L. Ives*, T. Bui*, W. Vogler*, J. Remacle*, M. Shephard*, M. Beall*, D. Kapraun n, H. Tran*

Event: IEEE Conference Record - Abstracts. PPPS-2001 Pulsed Power Plasma Science 2001. 28th IEEE International Conference on Plasma Science and 13th IEEE International Pulsed Power Conference

TL;DR: This presentation will provide details of the code operation and capabilities of a user-friendly 3-D, finite element, charged particle code with adaptive meshing, developed by Calabazas Creek Research, in association with Rensselaer Polytechnic Institute and Simmetrix. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: October 31, 2020

2001 chapter

Chemical Vapor Deposition Processes: Reduced-order Modeling

In K. H. Jürgen Buschow, M. C. Flemings, E. J. Kramer, P. Veyssière, R. W. Cahn, B. Ilschner, & S. Mahajan (Eds.), Encyclopedia of Materials: Science and Technology (2nd ed., pp. 1183–1187).

By: H. Tran n & C. Lee*

Ed(s): K. Jürgen Buschow, M. Flemings, E. Kramer, P. Veyssière, R. Cahn, B. Ilschner, S. Mahajan

Sources: NC State University Libraries, NC State University Libraries
Added: January 13, 2021

2001 journal article

Compensator control for chemical vapor deposition film growth using reduced-order design models

IEEE TRANSACTIONS ON SEMICONDUCTOR MANUFACTURING, 14(3), 231–241.

By: G. Kepler n, H. Tran n & H. Banks n

author keywords: compensators; CVD; feedback control; reduced order
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2001 conference paper

Feedback control of thin film growth in an HPCVD reactor via reduced order models

Proceedings of the 40th IEEE Conference on Decision and Control (Cat. No.01CH37228). Presented at the 40th Conference on Decision and Control.

By: H. Banks n, S. Beeler n, G. Kepler n & H. Tran n

Event: 40th Conference on Decision and Control

UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: October 31, 2020

2001 article

Modeling and control of physical processes using proper orthogonal decomposition

MATHEMATICAL AND COMPUTER MODELLING, Vol. 33, pp. 223–236.

By: H. Ly n & H. Tran n

author keywords: proper orthogonal decomposition; boundary control; Rayleigh-Benard convection
TL;DR: The aim of the paper is to show that, using the obtained ensemble of data, POD can be used to model accurately the natural convection and this approach is very efficient in the sense that it uses the smallest possible number of parameters, and thus, is suited for process control. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2001 journal article

Physiologically based pharmacokinetic modeling of benzene metabolism in mice through extrapolation from in vitro to in vivo

JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH-PART A, 62(6), 439–465.

By: C. Cole n, H. Tran n & P. Schlosser n

MeSH headings : Administration, Inhalation; Algorithms; Animals; Benzene / chemistry; Benzene / metabolism; Benzene / pharmacokinetics; Benzene Derivatives / chemistry; Benzene Derivatives / metabolism; Benzene Derivatives / pharmacokinetics; Chemical Phenomena; Chemistry, Physical; Mice; Models, Biological; Risk Assessment
TL;DR: In vitro metabolic constants for humans can be extrapolated to predict the dosimetry of benzene and its metabolites in humans to better estimate the risks of adverse effects from low-level benzene exposures. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2001 chapter

Reduced Order Based Compensator Control of Thin Film Growth in a CVD Reactor

In Optimal Control of Complex Structures (pp. 1–17).

By: H. Banks n & H. Tran n

Sources: Crossref, NC State University Libraries
Added: February 10, 2020

2001 journal article

Surface reaction kinetics of Ga1-xInxP growth during pulsed chemical beam epitaxy

APPLIED SURFACE SCIENCE, 178(1-4), 63–74.

By: N. Dietz*, S. Beeler n, J. Schmidt n & H. Tran n

author keywords: real-time optical growth monitoring; III-V epitaxy; surface reaction kinetics; parameter estimation; growth modeling; p-polarized reflectance
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2000 journal article

Feedback control methodologies for nonlinear systems

JOURNAL OF OPTIMIZATION THEORY AND APPLICATIONS, 107(1), 1–33.

By: S. Beeler n, H. Tran n & H. Banks n

author keywords: nonlinear optimal feedback control; Hamilton-Jacobi-Bellman equation; state-dependent Riccati equation; interpolation of open-loop controls
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2000 book

Industrial Mathematics: The 1998 CRSC Workshop

Philadelphia, PA: SIAM Publications.

Hien Tran

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

Event: Industrial Mathematics Modelling Workshop for Graduate Students at North Carolina State University, Raleigh, NC on July 27 - August 4, 1998

Source: NC State University Libraries
Added: January 17, 2021

2000 review

Modeling instability in the control system for human respiration: applications to infant non-REM sleep

[Review of ]. APPLIED MATHEMATICS AND COMPUTATION, 110(1), 1–51.

By: J. Batzel n & H. Tran n

TL;DR: The purpose of this paper is to extend the model presented by M. Jones in 1991 to include variable delay in the feedback control loop and to study the phenomena of periodic breathing and apnea as they occur during quiet sleep in infant sleep respiration at around 4 months of age. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2000 journal article

Reduced order model compensator control of species transport in a CVD reactor

OPTIMAL CONTROL APPLICATIONS & METHODS, 21(4), 143–160.

By: G. Kepler n, H. Tran n & H. Banks n

author keywords: linear quadratic control; proper orthogonal decomposition; reduced order model; chemical vapour deposition; Dirichlet boundary control
UN Sustainable Development Goal Categories
15. Life on Land (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2000 journal article

Stability of the human respiratory control system I. Analysis of a two-dimensional delay state-space model

JOURNAL OF MATHEMATICAL BIOLOGY, 41(1), 45–79.

By: J. Batzel n & H. Tran*

author keywords: respiratory control models; time delay; delay-dependent stability; instability; numerical simulations
MeSH headings : Adult; Brain / physiology; Carbon Dioxide / physiology; Computer Simulation; Feedback / physiology; Heart Failure / physiopathology; Humans; Linear Models; Models, Biological; Oxygen / physiology; Respiratory Physiological Phenomena
TL;DR: Analysis of the stability characteristics of a feedback control system of five differential equations with delays in both the state and control variables presented by Khoo et al. in 1991 shows that the decreased cardiac output and increased delay resulting from the congestive heart condition can induce instability at certain control gain levels. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2000 journal article

Stability of the human respiratory control system II. Analysis of a three-dimensional delay state-space model

JOURNAL OF MATHEMATICAL BIOLOGY, 41(1), 80–102.

By: J. Batzel* & H. Tran*

author keywords: respiratory control models; time delay; delay dependent stability; instability; numerical simulations
MeSH headings : Adult; Brain / physiology; Carbon Dioxide / physiology; Computer Simulation; Feedback / physiology; Heart Failure / physiopathology; Humans; Models, Biological; Oxygen / physiology; Respiratory Physiological Phenomena
TL;DR: The purpose of this paper is to study the stability characteristics of a feedback control system of five differential equations with delays in both the state and control variables presented by Khoo et al. in 1991 for modeling human respiration. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

1999 journal article

A complete steady state model of solute and water transport in the kidney

MATHEMATICAL AND COMPUTER MODELLING, 29(6), 63–82.

By: N. Kottler, H. Tran* & D. Wessell

author keywords: transport model; biomathematics; differential algebraic system; inserve problem; numerical methods
TL;DR: A detailed model, along with an optimized set of parameters for the proximal tubule, is incorporated into J. L. Stephenson's current central core model of the nephron to show that the modeled behavior approximates, in a general way, the physiological mechanisms of solvent and solute flow in the kidney. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

1999 journal article

Representation of GaP formation by a reduced order surface kinetics model using p-polarized reflectance measurements

JOURNAL OF APPLIED PHYSICS, 86(1), 674–682.

By: S. Beeler n, H. Tran n & N. Dietz n

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

1998 journal article

A dispersion model for the hepatic uptake and elimination of 2,3,7,8-tetrachlorodibenzo-p-dioxin

MATHEMATICAL AND COMPUTER MODELLING, 28(1), 9–29.

By: H. Banks*, C. Musante* & H. Tran*

author keywords: physiologically-based pharmacokinetic (PBPK) model; 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD); liver transport models; nonlinear partial differential equations; delay equations
TL;DR: A convection-dispersion model for the uptake and elimination of 2,3,7,8-tetrachlorodibenzo-p-dioxin in the liver is presented and the result is a nonlinear system of seven coupled partial and ordinary differential equations with time delays. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

1998 journal article

Real-time monitoring of steady-state pulsed chemical beam epitaxy by p-polarized reflectance

JOURNAL OF CRYSTAL GROWTH, 183(3), 323–337.

By: K. Bachmann n, N. Sukidi n, C. Hopfner n, C. Harris n, N. Dietz n, H. Tran n, S. Beeler n, K. Ito n, H. Banks n

author keywords: p-polarized reflectance; surface kinetics; chemical beam epitaxy; real-time process monitoring
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

1997 journal article

Molecular layer epitaxy by real-time optical process monitoring

Applied Surface Science, 112(1997 Mar.), 38–47.

By: K. Bachmann n, C. Hopfner n, N. Sukidi n, A. Miller n, C. Harris n, D. Aspnes n, N. Dietz n, H. Tran n ...

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

1995 conference paper

High Pressure Vapor Transport of ZnGeP 2 : I, Parameter Evaluation

In R. A. Schiffman (Ed.), 7th International Symposium on Experimental Methods for Microgravity Materials Science : proceedings of the Seventh International Conference on Experimental Methods for Microgravity Materials Science (pp. 57–66). Warrendale, PA: Minerals, Metals and Materials Society,

By: S. Fiechter, R. Castleberry, N. Dietz, K. Bachmann, H. Banks, K. Ito, J. Scroggs, H. Tran

Ed(s): R. Schiffman

Event: Annual Meeting of TMS at Las Vegas, NV on February 12-16, 1994

Source: NC State University Libraries
Added: January 13, 2021

1995 conference paper

High Pressure Vapor Transport of ZnGeP 2 : II, Three-Dimensional Simulation of Gas-dynamics under Microgravity Conditions

In R. Schiffman (Ed.), 7th International Symposium on Experimental Methods for Microgravity Materials Science : proceedings of the Seventh International Conference on Experimental Methods for Microgravity Materials Science (pp. 67–72). Warrendale, PA: Minerals, Metals and Materials Society,

By: J. Scroggs, H. Banks, K. Ito, S. Ravindran, H. Tran, K. Bachmann, R. Castleberry, N. Dietz

Ed(s): R. Schiffman

Event: Annual Meeting of TMS at Las Vegas, NV on February 12-16, 1994

Source: NC State University Libraries
Added: January 13, 2021

1995 conference paper

Human Respiratory Control System and Periodic Breathing

SES' 95 : Society of Engineering Science 32nd annual technical meeting, October 29 - November 2, 1995, New Orleans, LA, 623–624. College Station, Texas.

By: J. Batzel & H. Tran

Event: 32nd Annual Technical Meeting of the Society of Engineering Science at New Orleans, LA on October 29 - November 2, 1995

Source: NC State University Libraries
Added: January 13, 2021

1995 chapter

Mathematical Issues in Optimal Design of a Vapor Transport Reactor

In M. D. Gunzburger (Ed.), Flow Control (pp. 197–218).

By: K. Ito n, H. Tran n & J. Scroggs n

Ed(s): M. Gunzburger

Sources: NC State University Libraries, NC State University Libraries
Added: January 13, 2021

1995 chapter

Optimal Control of Thermally Coupled Navier Stokes Equations

In Optimal Design and Control (pp. 199–214).

By: K. Ito n, J. Scroggs n & H. Tran n

Sources: Crossref, NC State University Libraries
Added: February 10, 2020

1994 conference paper

Gasdynamics and Transport in a High-Pressure Reactor Under Microgravity Conditions

Proceedings of the 2nd IEEE Mediterranean Symposium on New Directions in Control and Automation (MED '94), 427–433. New York: IEEE Publications.

By: H. Banks, K. Ito, J. Scroggs, H. Tran, K. Bachmann, H. Castleberry, S. Fiechter

Event: 2nd IEEE Mediterranean Symposium on New Directions in Control and Automation (MED '94) at Louis Maleme Beach Hotel, Chania, Crete, Greece on June 19-21, 1994

Source: NC State University Libraries
Added: January 13, 2021

1994 conference paper

High Pressure Vapour Transport of Binary and Ternary Compound Semiconductors

In R. A. Schiffman & J. B. Andrews (Eds.), 6th International Symposium on Experimental Methods for Microgravity Materials Science : proceedings of the Sixth International Symposium on Experimental Methods for Microgravity Materials Science (pp. 93–100). Warrendale, PA: Minerals, Metals and Materials Society.

By: S. Fiechter, R. Castleberry, G. Wood, K. Bachmann, H. Tran, K. Ito, J. Scroggs

Ed(s): R. Schiffman & J. Andrews

Event: 123rd Annual TMS Meeting at San Francisco, CA on February 28 - March 2, 1994

Source: NC State University Libraries
Added: January 13, 2021

1994 journal article

Numerical Approximations for Hereditary Systems with Input and Output Delays: Convergence Results and Convergence Rates

SIAM Journal on Control and Optimization, 32(5), 1332–1363.

By: A. Manitius & H. Tran*

author keywords: FUNCTIONAL DIFFERENTIAL EQUATIONS; UNBOUNDED INPUT AND OUTPUT OPERATORS; AVERAGING APPROXIMATION; CONVERGENCE; CONVERGENCE RATE
UN Sustainable Development Goal Categories
Sources: Crossref, NC State University Libraries
Added: February 10, 2020

1993 journal article

Estimation of Variable Cefficients in the Fokker–Planck Quations Using Moving Node Finite Elements

SIAM Journal on Numerical Analysis, 30(6), 1574–1602.

By: H. Banks, H. Tran* & D. Woodward

author keywords: FOKKER-PLANCK EQUATION; PARAMETER IDENTIFICATION; MOVING FINITE ELEMENTS; CONVERGENCE THEORY
Sources: Crossref, NC State University Libraries
Added: December 24, 2020

1993 journal article

Heteroepitaxy of Wide Bandgap Ternary Semiconductors

Japanese Journal of Applied Physics, 32(S3), 133.

By: K. Bachmann n, G. Xing n, J. Scroggs n, H. Tran n, K. Ito n, H. Castleberry, G. Wood

author keywords: HETEROEPITAXY; I-III-VI(2)COMPOUNDS; II-IV-V(2)COMPOUNDS; MOCVD; MBE; LPE; HALIDE TRANSPORT
Sources: Crossref, NC State University Libraries
Added: December 24, 2020

1993 journal article

Modeling of Flow Dynamics and its Impact on the Optimal Reactor Design Problem

Proceeding of 1992 AMS-IMS-SIAM Summer Research Conference on Control and Identification of Partial Differential Equations, 1–13.

By: H. Tran, J. Scroggs & K. Bachmann

Event: AMS-IMS-SIAM Summer Research Conference on Control and Identification of Partial Differential Equations

Source: NC State University Libraries
Added: January 13, 2021

1992 journal article

Fast Algorithms for Nonsmooth Compact Fixed-Point Problems

SIAM Journal on Numerical Analysis, 29(6), 1769–1792.

By: M. Heinkenschloss, C. Kelley* & H. Tran*

author keywords: COMBAT MODELING; COMPETITIVE SYSTEMS; INTEGRAL EQUATIONS; NONDIFFERENTIABLE NONLINEAR EQUATIONS; MULTILEVEL ALGORITHMS
TL;DR: The solution of an optimality system that arises in control of competitive systems is considered and the critical structural hypothesis in the general theory is explicitly verified in the context of problems that can be expressed as integral equations with certain types of nonsmoothness. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: July 27, 2019

1992 conference paper

Optimal Control of Fluid Flow in a Vertical Chemical Vapor Deposition Reactor

Proceedings of the 31st IEEE Conference on Decision and Control : December 16-18, 1992, Westin La Paloma, Tucson, Arizona, USA, 3405–3409. New York: IEEE Control Systems Society.

By: H. Tran & J. Scroggs

Event: IEEE Conference on Decision & Control at Tuscon, Arizona

Source: NC State University Libraries
Added: January 13, 2021

1991 journal article

A Fully-Discrete Spectral Method for Delay-Differential Equations

SIAM Journal on Numerical Analysis, 28(4), 1121–1140.

By: K. Ito, H. Tran* & A. Manitius

author keywords: SPECTRAL METHOD; STABILITY ANALYSIS; FUNCTIONAL-DIFFERENTIAL EQUATIONS
Sources: Crossref, NC State University Libraries
Added: October 31, 2020

1991 chapter

Numerical Studies of the Linear Quadratic Control Problem for Retarded Systems with Delay in Control

In Computation and Control II (pp. 307–324).

By: H. Tran n

Sources: Crossref, NC State University Libraries
Added: December 7, 2020

1990 conference paper

Finite dimensional approximations for functional differential equations with input and output delays

29th IEEE Conference on Decision and Control. Presented at the 29th IEEE Conference on Decision and Control.

By: A. Manitius n & H. Tran n

Event: 29th IEEE Conference on Decision and Control

Sources: Crossref, NC State University Libraries
Added: December 7, 2020

1989 conference paper

Linear Quadratic Optimal Control Problem for Linear Systems with Unbounded Input and Output Operators: Numerical Approximations”

Linear Quadratic Optimal Control Problem for Linear Systems with Unbounded Input and Output Operators: Numerical Approximations.” In E. Kappel, K. Kunisch, & W. Schappacher (Eds.), Control and estimation of distributed parameter systems : 4th International Conference on Control of Distributed Parameter Systems, Vorau, July 10-16, 1988 (pp. 171–195). Basel: Birkhäuser Verlag.

By: K. Ito & H. Tran

Ed(s): E. Kappel, K. Kunisch & W. Schappacher

Event: International Conference on Control of Distributed Parameter Systems at Chorherrenstift Vorau on July 10-16, 1988

Source: NC State University Libraries
Added: January 14, 2021

1989 conference paper

Stochastic Models of Subpopulation Emergence in Heterogeneous Tumors

In J. Robert & W. Midvidy (Eds.), Electrical and power systems : modelling and simulation. Basel: J.C. Balzer AG.

By: H. Tran, S. Michelson, K. Ito & J. Leith

Ed(s): J. Robert & W. Midvidy

Event: 12th IMACS World Congress on Scientific Computation at Paris, France

Source: NC State University Libraries
Added: January 14, 2021

1989 journal article

Stochastic models for subpopulation emergence in heterogeneous tumors

Bulletin of Mathematical Biology, 51(6), 731–747.

By: S. Michelson, K. Ito, H. Tran* & J. Leith

TL;DR: The results of the simulations show that the stochastic model describes the same basic dynamics as its deterministic counterpart via a convective component, but that for each simulation a distribution of tumor sizes and mixes can also be derived from a diffusive component in the model. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: December 7, 2020

1988 conference paper

Linear quadratic regulator problem for infinite dimensional linear systems with delays in control

Proceedings of the 27th IEEE Conference on Decision and Control, 2012–2017.

By: K. Ito* & H. Tran*

Event: 27th IEEE Conference on Decision and Control at Austin, TX, USA on December 7-9, 1988

Sources: Crossref, NC State University Libraries
Added: December 24, 2020

1987 journal article

Computation of Eigenvalues Associated with Functional Differential Equations

SIAM Journal on Scientific and Statistical Computing, 8(3), 222–247.

By: A. Manitius, H. Tran*, G. Payre & R. Roy

Sources: Crossref, NC State University Libraries
Added: December 24, 2020

1986 journal article

Numerical simulation of a non-linear feedback controller for a wind tunnel model involving a time delay

Optimal Control Applications and Methods, 7(1), 19–39.

By: A. Manitius* & H. Tran*

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: December 7, 2020

1985 journal article

Computation of closed-loop eigenvalues associated with the optimal regulator problem for functional differential equations

IEEE Transactions on Automatic Control, 30(12), 1245–1248.

By: A. Manitius* & H. Tran*

Sources: Crossref, NC State University Libraries
Added: September 3, 2020

1985 conference paper

On the numerical approximations for linear functional differential equations with input and output delays

1985 24th IEEE Conference on Decision and Control. Presented at the 1985 24th IEEE Conference on Decision and Control, Fort Lauderdale, FL.

By: H. Tran* & A. Manitius*

Event: 1985 24th IEEE Conference on Decision and Control at Fort Lauderdale, FL on December 11-13, 1985

Sources: Crossref, NC State University Libraries
Added: December 24, 2020

1983 conference paper

Computation of closed loop eigenvalues associated with the optimal regulator problem for functional differential equations

The 22nd IEEE Conference on Decision and Control. Presented at the The 22nd IEEE Conference on Decision and Control.

By: A. Manitius* & H. Tran*

Event: The 22nd IEEE Conference on Decision and Control

UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: December 7, 2020

1983 conference paper

Numerical Simulation of Linear and Nonlinear Feedback Controllers for a Wind Tunnel Model Involving a Time Delay”

Numerical Simulation of Linear and Nonlinear Feedback Controllers for a Wind Tunnel Model Involving a Time Delay.” In H. L. Weinert & R. C. Melville (Eds.), Proceedings of the Seventeenth Annual Conference on Information Sciences and Systems : papers presented March 23, 24, and 25, 1983. Baltimore, MD: Johns Hopkins University.

By: A. Manitius & H. Tran

Ed(s): H. Weinert & R. Melville

Event: Seventeenth Annual Conference on Information Sciences and Systems at Baltimore, MD on March 23-25, 1983

Source: NC State University Libraries
Added: January 14, 2021

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