Results 31 to 40 of about 1,220,533 (174)

Structure‐Guided Balancing of Ambipolar Transport Enables Symmetric Switching in Heterojunction Bilayer Organic Transistor Inverters

Advanced Functional Materials, EarlyView.
Balancing the spatially separated p‐ and n‐type transport pathways in heterojunction‐bilayer OTFTs enables symmetric inverter switching (VM ≈ 0.5VDD), whereas discrete integration of unipolar OTFTs gives polarity‐dependent and resistive responses. ABSTRACT High inverter performance in ambipolar organic electronics requires balanced channel strengths ...
Sohyun Choi, Young Yong Kim, Ji Ho Youk, Hoichang Yang   +3 more
wiley   +1 more source

Dynamic solution of the HJB equation and the optimal control of nonlinear systems

, 2010
Optimal control problems are often solved exploiting the solution of the so-called Hamilton-Jacobi-Bellman (HJB) partial differential equation, which may be, however, hard or impossible to solve in specific examples.
Astolfi, A, Astolfi A., Sassano M., M. Sassano, Sassano, M, A. Astolfi   +5 more
core   +1 more source

A class of infinite-horizon stochastic delay optimal control problems and a viscosity solution to the associated HJB equation [PDF]

, 2018
In this paper, we investigate a class of infinite-horizon optimal control problems for stochastic differential equations with delays for which the associated second order Hamilton−Jacobi−Bellman (HJB) equation is a nonlinear partial differential equation
Jianjun Zhou, Zhou, Jianjun
core   +1 more source

Comparative Study of Gas and Liquid Flow in Packed Beds Using Phase‐Contrast MRI

Chemie Ingenieur Technik, EarlyView.
This work presents applications of phase‐contrast magnetic resonance imaging (MRI) to investigate fluid flow fields and temperature in packed beds. Comparison of ethane (C2H6) gas flow with that of water flow is done at similar flow conditions. The temperature of water is also measured using MRI.
Maitreyi Sangal, Maria Anikeeva, Frank Godenschweger, Jan‐Bernd Hövener, Oliver Speck   +4 more
wiley   +1 more source

Disease–Drug–Drug Interaction of Imatinib in COVID‐19 ARDS: A Pooled Population Pharmacokinetic Analysis

CPT: Pharmacometrics &Systems Pharmacology, Volume 14, Issue 3, Page 583-595, March 2025.
ABSTRACT Prior pharmacokinetic (PK) analysis revealed that increased alpha‐1‐acid glycoprotein (AAG) levels are associated with decreased imatinib unbound fraction in coronavirus disease 2019 (COVID‐19) patients. This study aimed to investigate the PK of total and unbound concentrations of imatinib and the metabolite N‐desmethyl imatinib in ...
Medhat M. Said, Job R. Schippers, Leila Atmowihardjo, Yingxue Li, Mick S. van der Plas, Harm J. Bogaard, Lieuwe D. J. Bos, Ron A. A. Mathôt, Jurjan Aman, Eleonora L. Swart, Imke H. Bartelink   +10 more
wiley   +1 more source

PINN-based viscosity solution of HJB equation

, 2023
This paper proposed a novel PINN-based viscosity solution for HJB equations. Although there exists work using PINN to solve HJB, but none of them gives the solution in viscosity sense. This paper reveals the fact that using the convex neural network, one
Zhang, Jiarui, Zhou, Liutao, Liu, Tianyu, Ding, Steven   +3 more
core  

Stochastic Optimal Control of Averaged SDDE with Semi-Markov Switching and with Application in Economics

Mathematics
This paper is devoted to the study of stochastic optimal control of averaged stochastic differential delay equations (SDDEs) with semi-Markov switchings and their applications in economics.
Mariya Svishchuk, Anatoliy V. Swishchuk
doaj   +1 more source

Optimal Reinsurance-Investment Problem under Mean-Variance Criterion with n Risky Assets

Discrete Dynamics in Nature and Society, 2020
Based on the mean-variance criterion, this paper investigates the continuous-time reinsurance and investment problem. The insurer’s surplus process is assumed to follow Cramér–Lundberg model.
Peng Yang
doaj   +1 more source

Min–Max Dynamic Programming Control for Systems with Uncertain Mathematical Models via Differential Neural Network Bellman’s Function Approximation

Mathematics, 2023
This research focuses on designing a min–max robust control based on a neural dynamic programming approach using a class of continuous differential neural networks (DNNs). The proposed controller solves the robust optimization of a proposed cost function
Alexander Poznyak, Sebastian Noriega-Marquez, Alejandra Hernandez-Sanchez, Mariana Ballesteros-Escamilla, Isaac Chairez   +4 more
doaj   +1 more source

Feedback Linearisation with State Constraints

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT Feedback Linearisation (FBL) is a widely used technique that applies feedback laws to transform input‐affine nonlinear control systems into linear control systems, allowing for the use of linear controller design methods such as pole placement.
Songlin Jin, Yuanbo Nie, Morgan Jones
wiley   +1 more source