Results 101 to 110 of about 24,698,590 (380)

Response analysis of non-Gaussian randomly excited systems via minimum cross entropy method

Nihon Kikai Gakkai ronbunshu, 2016
A method based on the minimum cross entropy principle is presented for obtaining approximately the response distributions of nonlinear systems subjected to non-Gaussian random excitation.
Takahiro TSUCHIDA, Koji KIMURA
doaj   +1 more source

Using modified Gaussian distribution to study the physical properties of one and two-component ultracold atoms

, 2006
Gaussian distribution is commonly used as a good approximation to study the trapped one-component Bose-condensed atoms with relatively small nonlinear effect.
Huang, C. C., Wu, W. C.
core   +1 more source

Serum uric acid levels in older adults: Associations with clinical outcomes and implications for reference intervals in those aged 70 years and over

Arthritis Care &Research, Accepted Article.
Objectives Reports have linked both high and low serum uric acid (SUA) levels to adverse health outcomes. This study aimed to establish a reference interval for SUA in older adults and assessed its association with clinically relevant outcomes in relatively healthy, community‐dwelling individuals aged 70 and older.
Amanda J Rickard, Cammie Tran, Hans G Schneider, Flavia M Cicuttini, Anita E Wluka, Ego Seeman, Johannes T Neumann, Md Nazmul Karim, Zhen Zhou, Sultana Monira Hussain, David P Q Clark, Daniel Clayton‐Chubb, Andrew M Tonkin, Lawrence J Beilin, Robyn L Woods, John J McNeil   +15 more
wiley   +1 more source

An Advanced PID Based Control Technique With Adaptive Parameter Scheduling for A Nonlinear CSTR Plant

IEEE Access, 2019
The continuous stirred tank reactor (CSTR) tends to reveal unstable severe nonlinear behavior when the operating level changes. As investigated in an earlier work, the hard nonlinearity nature of the CSTR originates from multiple probable sets of states ...
Obaid Alshammari, Muhammad Nasiruddin Mahyuddin, Houssem Jerbi   +2 more
doaj   +1 more source

Estimator-Based Control for Pure-Feedback Systems With Incomplete Measurements

IEEE Access, 2020
This paper investigates estimator-based control problems for pure-feedback nonlinear systems with incomplete measurements due to the transmission packet losing or sensor saturation. The incomplete measurements can cause the state variables unavailable or
Lidong Wang, Xiaoping Liu, Xuebo Chen, Tong Li, Yingxin Wei, Xinze Xue   +5 more
doaj   +1 more source

Data‐driven forecasting of ship motions in waves using machine learning and dynamic mode decomposition

International Journal of Adaptive Control and Signal Processing, EarlyView.
Summary Data‐driven forecasting of ship motions in waves is investigated through feedforward and recurrent neural networks as well as dynamic mode decomposition. The goal is to predict future ship motion variables based on past data collected on the field, using equation‐free approaches.
Matteo Diez, Mauro Gaggero, Andrea Serani   +2 more
wiley   +1 more source

Resonantly enhanced second- and third-harmonic generation in dielectric nonlinear metasurfaces

Opto-Electronic Advances
Nonlinear dielectric metasurfaces provide a promising approach to control and manipulate frequency conversion optical processes at the nanoscale, thus facilitating both advances in fundamental research and the development of new practical applications in
Ji Tong Wang, Pavel Tonkaev, Kirill Koshelev, Fangxing Lai, Sergey Kruk, Qinghai Song, Yuri Kivshar, Nicolae C. Panoiu   +7 more
doaj   +1 more source

A Fast Nonsingular Terminal Sliding Mode Control Method for Nonlinear Systems With Fixed-Time Stability Guarantees

IEEE Access, 2020
This paper proposes a nonsingular terminal sliding mode control scheme with fast fixed-time convergence for a class of second-order nonlinear systems in the presence of matched uncertainties and perturbations. First, based on fixed-time stability theory,
Ye Tian, Yuanli Cai, Yifan Deng
doaj   +1 more source

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

International Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam, Anthony Siming Chen, Guido Herrmann   +2 more
wiley   +1 more source

(p,Q) systems with critical singular exponential nonlinearities in the Heisenberg group

Open Mathematics, 2020
The paper deals with the existence of solutions for (p,Q)(p,Q) coupled elliptic systems in the Heisenberg group, with critical exponential growth at infinity and singular behavior at the origin.
Pucci Patrizia, Temperini Letizia
doaj   +1 more source