The problem of course control for underactuated surface ship is addressed in this paper. Firstly, neural networks are adopted to determine the parameters of the unknown part of ideal virtual backstepping control, even the weight values of neural network are updated by adaptive technique. Then uniform stability for the convergence of course tracking errors has been proven through Lyapunov stability theory. Finally, simulation experiments are carried out to illustrate the effectiveness of proposed control method.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4887622 | PMC |
http://dx.doi.org/10.1155/2016/3013280 | DOI Listing |
Foot Ankle Surg
January 2025
Edinburgh Orthopaedics, Royal Infirmary of Edinburgh, Little France Crescent, Edinburgh EH16 4SA, United Kingdom.
Introduction: It is unclear how pre-operative anxiety/depression affects patient reported outcome measures (PROMs) following total ankle replacements (TAR). We investigated the effects of anxiety/depression on PROMs using the Manchester-Oxford Foot Questionnaire (MOXFQ) following TAR.
Methods: PROMs data for primary TAR patients between 2011 and 2022 were extracted from a single-centre regional registry.
Unlabelled: We investigated the impact of participation in post-secondary university education (PSE) on the academic knowledge of adult students with severe intellectual disability and extensive support needs (SIDESN) vs. a similar group of controls who did not participate in PSE. We also examined whether the PSE would result in a "near transfer" to basic crystallized (facts and information) and fluid (problems involving executive functions and working memory) cognitive abilities, the contribution of background characteristics and crystallized and fluid abilities to their academic knowledge, semantic fluency and temporal relations.
View Article and Find Full Text PDFAnn Intensive Care
January 2025
Division of Intensive Care and Emergency Medicine, Department of Internal Medicine, Medical University Innsbruck, Anichstrasse 35, Innsbruck, 6020, Austria.
Background: Acute kidney injury (AKI) is common in critically ill patients and is associated with increased morbidity and mortality. Its complications often require renal replacement therapy (RRT). Invasive mechanical ventilation (IMV) and infections are considered risk factors for the occurrence of AKI.
View Article and Find Full Text PDFJ Integr Neurosci
January 2025
Department of Ophthalmology, University Hospital of Udine, 33100 Udine, Italy.
The complicated neurological syndrome known as multiple sclerosis (MS) is typified by demyelination, inflammation, and neurodegeneration in the central nervous system (CNS). Managing this crippling illness requires an understanding of the complex interactions between neurophysiological systems, diagnostic techniques, and therapeutic methods. A complex series of processes, including immunological dysregulation, inflammation, and neurodegeneration, are involved in the pathogenesis of MS.
View Article and Find Full Text PDFAnn Clin Transl Neurol
January 2025
NEUROFARBA Department, Neurosciences Section, University of Florence, Florence, Italy.
Objectives: We aim to investigate cognitive phenotype distribution and MRI correlates across pediatric-, elderly-, and adult-onset MS patients as a function of disease duration.
Methods: In this cross-sectional study, we enrolled 1262 MS patients and 238 healthy controls, with neurological and cognitive assessments. A subset of 222 MS patients and 92 controls underwent 3T-MRI scan for brain atrophy and lesion analysis.
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!