Results 61 to 70 of about 2,626,429 (291)

Exercise Interventions in Children, Adolescents and Young Adults With Paediatric Bone Tumours—A Systematic Review

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Bone tumours present significant challenges for affected patients, as multimodal therapy often leads to prolonged physical limitations. This is particularly critical during childhood and adolescence, as it can negatively impact physiological development and psychosocial resilience.
Jennifer Queisser, Claire Laurie, Teresa Schmidt, Irene von Luettichau, Peter Bekkering, Sabine Kesting   +5 more
wiley   +1 more source

Adaptive Prescribed-Time Fault-Tolerant Control for a Class of Uncertain Nonlinear Systems With Time-Varying Sensor and Actuator Faults

IEEE Access
This paper addresses the prescribed-time fault-tolerant control (PT-FTC) problem for a class of uncertain nonlinear systems in the strict-feedback form, which are subject to completely unknown time-varying virtual control coefficients, uncertain time ...
Chuixi Wei, Dandan Zhang
doaj   +1 more source

Memory State Feedback Control for Time-Varying Delay Switched Fuzzy Systems

Advances in Fuzzy Systems, 2019
Consider the problem of memoryless state feedback controller for time-delay system, which cannot consider both the memoryless and the memory items in the system.
Le Zhang, Meiyu Jia, Hong Yang, Gang Wu
doaj   +1 more source

Robust adaptive control of time varying systems

The 23rd IEEE Conference on Decision and Control, 1984
This paper extends the results of Kosut and Friedlander [1] and Kosut [2] in that robust stability results for direct adaptive control algorithms for linear time invariant finite dimensional systems with unstructured time varying uncertainties are developed, in the first main theorem results for the global L2 stability of the adaptive scheme are ...
Olivier Gomart, Peter E. Caines
openaire   +2 more sources

DELP Treatment on Vision and Retinal Microcirculation in Patients With Acute Ischemic Stroke: Report of Five Cases and Literature Review

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background The delipid extracorporeal lipoprotein filter from plasma (DELP) treatment can effectively reduce blood lipid, increase blood flow, and improve neurological deficits in patients with acute ischemic stroke (AIS). However, its effect on vision and retinal microcirculation in stroke patients has never been reported.
Ning Li, Ronghua Hong, Hua You, Feiping Xu, Qingjun Zhang, Yiwen Lin, Yuting Su, Danmei Lan, Lingjing Jin, Junhui She   +9 more
wiley   +1 more source

Towards nonlinear delay-based control for convection-likedistributed systems: The example of water flow control in openchannel systems

Networks and Heterogeneous Media, 2009
In this paper, the driving idea is to use a possible approximation ofpartial differential equations with boundary control by ordinarydifferential equations with time-varying delayed input, for a control purpose.This results inthe development of a ...
Gildas Besançon, Didier Georges, Zohra Benayache   +2 more
doaj   +1 more source

A Comparative Study of Cerebral Oxygenation During Exercise in Hemodialysis and Peritoneal Dialysis Patients

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou, Konstantina Dipla, Danai Faitatzidou, Fotini Iatridi, Areti Georgiou, Artemios Karagiannidis, Erasmia Sampani, Chrysostomos Dimitriadis, Aggelos Koutlas, Andreas Zafeiridis, Pantelis Sarafidis   +10 more
wiley   +1 more source

Fixed‐time prescribed performance control method for nonlinear systems with unknown time‐varying parameters

IET Control Theory & Applications
In this study, it is considered that the question of adaptive tracking control of nonlinear systems containing unknown time‐varying parameters. To optimize the control effect, a fixed‐time control strategy is adopted, in which the upper bound of the ...
Wei Sun, Junhao Yuan, Xiaoqin Yang
doaj   +1 more source

Guaranteed Cost Finite-Time Control for Positive Switched Linear Systems with Time-Varying Delays

Journal of Control Science and Engineering, 2017
This paper considers the guaranteed cost finite-time control for positive switched linear systems with time-varying delays. The definition of guaranteed cost finite-time boundedness is firstly given.
Xiangyang Cao, Leipo Liu, Zhumu Fu, Xiaona Song, Shuzhong Song   +4 more
doaj   +1 more source

Tracking implicit trajectories [PDF]

, 1995
Output tracking of implcitly defined reference trajectories is examined. A continuous-time nonlinear dynamical system is constructed that produces explicit estimates of time-varying implicit trajectories.
Getz, Neil H., Marsden, Jerrold E.
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