Results 41 to 50 of about 198,445 (283)

Clustering Algorithm Reveals Dopamine‐Motor Mismatch in Cognitively Preserved Parkinson's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To explore the relationship between dopaminergic denervation and motor impairment in two de novo Parkinson's disease (PD) cohorts. Methods n = 249 PD patients from Parkinson's Progression Markers Initiative (PPMI) and n = 84 from an external clinical cohort.
Rachele Malito, Chiara Meneghini, Alice Galli, Luca Gallo, Pierfrancesco Mitrotti, Paola Dimartino, Marianna Inglese, Cinzia Zatti, Alessandro Lupini, Andrea Pilotto, Alessandro Padovani, Micol Avenali, Enza Maria Valente, Cristina Tassorelli, Silvia P. Caminiti   +14 more
wiley   +1 more source

Leading-Following Consensus for Multi-Agent Systems With Event-Triggered Delayed Impulsive Control

IEEE Access, 2019
In this paper, the exponential leader-following consensus problem is investigated for networked multi-agent systems. In order to further reduce the usage of the communication resources, event-triggered delayed impulsive control strategy is put forward ...
Chengbo Yi, Chen Xu, Jianwen Feng, Jingyi Wang, Yi Zhao   +4 more
doaj   +1 more source

I can't wait! Neural reward signals in impulsive individuals exaggerate the difference between immediate and future rewards

, 2016
Waiting for rewards is difficult, and highly impulsive individuals with low self-control have an especially hard time with it. Here, we investigated whether neural responses to rewards in a delayed gratification task predict impulsivity and self-control.
Debener, Stefan, Hewig, Johannes, Holroyd, Clay, Schmidt, Barbara   +3 more
core   +1 more source

Stability analysis of impulsive stochastic Cohen–Grossberg neural networks with mixed time delays [PDF]

, 2008
This is the post print version of the article. The official published version can be obtained from the link - Copyright 2008 Elsevier LtdIn this paper, the problem of stability analysis for a class of impulsive stochastic Cohen–Grossberg neural networks ...
Arik, Cao, Cao, Chen, Chen, Chen, Cohen, Gao, Gao, Gao, Gao, Gopalsamy, Guan, Ho, Huang, Liang, Liu, Liu, Liu, Lu, Lu, Qiankun Song, Song, Song, Wang, Wang, Wang, Wang, Wang, Wang, Wu, Xu, Yang, Ye, Yuan, Zhang, Zhang, Zhao, Zidong Wang   +38 more
core   +1 more source

Laser Powder Bed Fusion of Copper–Tungsten Composites for Heat Sink Applications in High‐Power Electronics

Advanced Engineering Materials, EarlyView.
This article demonstrates the successful qualification of a copper–tungsten composite for laser powder bed fusion. The resulting components exhibited high density, high thermal conductivity, and reduced thermal expansion. Heat sinks with complex geometries were successfully manufactured, clearly showcasing the material's potential for additive ...
Simon Rauh, Shashank Deepak Prabhu, Jannik Huber, Lioba Fischer, Gerhard Wolf, Nico Hempel, Peter Mayr   +6 more
wiley   +1 more source

Complex Behavior in a Fish Algae Consumption Model with Impulsive Control Strategy

Discrete Dynamics in Nature and Society, 2011
This paper investigates a dynamic mathematical model of fish algae consumption with an impulsive control strategy analytically. It is proved that the system has a globally asymptotically stable algae-eradication periodic solution and is permanent by ...
Jin Yang, Min Zhao
doaj   +1 more source

Neural-Impulsive Pinning Control for Complex Networks Based on V-Stability

Mathematics, 2020
In this work, a neural impulsive pinning controller for a twenty-node dynamical discrete complex network is presented. The node dynamics of the network are all different types of discrete versions of chaotic attractors of three dimensions.
Daniel Ríos-Rivera, Alma Y. Alanis, Edgar N. Sanchez   +2 more
doaj   +1 more source

Impulsive Control of Systems with Network Structure Describing Spread of Political Influence [PDF]

Известия Иркутского государственного университета: Серия "Математика", 2018
We study a particular class of singular optimal control problems and corresponding impulsive control problems, which can be interpreted in terms of spread of a certain information impact (political influence) in a certain "social network'' represented by
M. V. Staritsyn, N. S. Maltugueva, N. I. Pogodaev, S.P. Sorokin   +3 more
doaj   +1 more source

Global Stability of Delayed Ecosystem via Impulsive Differential Inequality and Minimax Principle

Mathematics, 2021
This paper reports applying Minimax principle and impulsive differential inequality to derive the existence of multiple stationary solutions and the global stability of a positive stationary solution for a delayed feedback Gilpin–Ayala competition model ...
Ruofeng Rao
doaj   +1 more source

Necessary conditions involving Lie brackets for impulsive optimal control problems

, 2019
We obtain higher order necessary conditions for a minimum of a Mayer optimal control problem connected with a nonlinear, control-affine system, where the controls range on an m-dimensional Euclidean space.
Aronna, M. Soledad, Motta, Monica, Rampazzo, Franco   +2 more
core   +1 more source