Results 21 to 30 of about 13,276,511 (306)

Understanding fixed effects in human well-being [PDF]

, 2009
In studies of subjective well-being, economists and other researchers typically use a fixed or random effect estimation to control for unobservable heterogeneity across individuals.
Boyce, Christopher J., Boyce, Christopher J, Christopher J. Boyce   +2 more
core   +1 more source

A New Event-Triggered Distributed Fixed-Time Consensus Strategy for Multi-Agent Systems With Nonlinear Dynamics and Uncertain Disturbances

IEEE Access
This paper considers the event-triggered distributed fixed-time consensus control problem of leader-following multi-agent systems with nonlinear dynamics and inherent disturbances.
Xiaoling Chen, Junjie Dong, Yang Wang, Guopeng Zhou   +3 more
doaj   +1 more source

Fixed-Time Leader-Follower Formation Control of Autonomous Underwater Vehicles With Event-Triggered Intermittent Communications

IEEE Access, 2018
This paper investigates a fixed-time leader-following formation control method for a set of autonomous underwater vehicles (AUVs) with event-triggered acoustic communications.
Zhenyu Gao, Ge Guo
doaj   +1 more source

Fixed-Time Synchronization Analysis for Complex-Valued Neural Networks via a New Fixed-Time Stability Theorem

IEEE Access, 2020
Based on variable substitution, calculating definite integral and solving the minimization problem, in this paper we establish a new fixed-time stability theorem, which can provide a novel upper bound estimate formula for the settling time.
Ling Mi, Chuan Chen, Baolin Qiu, Lijuan Xu, Lei Zhang   +4 more
doaj   +1 more source

Distributed Time-Varying Optimal Resource Management for Microgrids via Fixed-Time Multiagent Approach

Energies
This paper investigates the distributed time-varying (TV) resource management problem (RMP) for microgrids (MGs) within a multi-agent system (MAS) framework.
Tingting Zhou, Salah Laghrouche, Youcef Ait-Amirat   +2 more
doaj   +1 more source

Fixed-Time Gradient Dynamics With Time-Varying Coefficients for Continuous-Time Optimization

, 2023
In this article, we propose fixed-time gradient dynamics with time-varying coefficients for continuous-time optimization. We first investigate the Lyapunov stability conditions that allow us to achieve fixed-time stability of the time-varying dynamical ...
Xinghuo Yu (18029455), Andrew Eberhard (18026932), Thuy Lien Nguyen (18306094), Chaojie Li (815056)   +3 more
core  

Adaptive Fixed-Time Practically Tracking Control for n-Link Flexible-Joint Manipulator With Input Quantization and Input Delay via Command Filter-Based Approach

IEEE Access
This paper investigates the fixed-time trajectory tracking control problem for n-link flexible joint manipulator arms subject to input quantization, input delay, and unmodeled dynamics.
Rongyang Qiu, Meizhen Xia, Jiu Zhang, Chao Ma   +3 more
doaj   +1 more source

Estrous Synchronization and Fixed-Time Artificial Insemination

EDIS, 2016
The economic success of beef cow-calf operations depends on the production of one healthy calf per cow per year. To achieve this goal, cow-calf producers need to overcome several obstacles related to the cow, bull, and offspring.
Vitor R. G. Mercadante, Darren D. Henry, Francine M. Ciriaco, Pedro L. P. Fontes, Nicky Oosthuizen, G. Cliff Lamb   +5 more
doaj   +5 more sources

On SFTSM control with fixed‐time convergence

IET Control Theory & Applications, 2017
A singularity‐free terminal sliding mode (TSM) control scheme with fast and fixed‐time convergence for a class of second‐order non‐linear systems with matched uncertainties and external disturbances is proposed. A novel singularity‐free fast TSM (SFTSM) structure is constructed and the upper‐bound of convergence time is independent of initial states ...
Li, Huijie, Cai, Yuanli
openaire   +1 more source

Clinical and Biological Features of Response in Resistant Neuroblastoma to 131I‐Metaiodobenzylguanidine Radiotherapy in the Anti‐GD2 Immunotherapy Era

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background 131I‐metaiodobenzylguanidine (131I‐MIBG) radiotherapy is a key treatment for relapsed and refractory (R/R) neuroblastoma (NB). Patients with R/R disease treated in the modern era are increasingly exposed to anti‐GD2 immunotherapy, which exerts selective pressure and may modify both tumor cell state and microenvironment.
Benjamin J. Lerman, Katherine K. Matthay, Fabienne Hollinger, Catriona Black, Ann A. Lazar, Miguel Pampaloni, Steven G. DuBois, Kieuhoa T. Vo   +7 more
wiley   +1 more source