Results 141 to 150 of about 387,126 (253)

High Relative Accuracy Computations With Covariance Matrices of Order Statistics

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT In many statistical applications, numerical computations with covariance matrices need to be performed. The error made when performing such numerical computations increases with the condition number of the covariance matrix, which is related to the number of variables and the strength of the correlation between the variables. In a recent work,
Juan Baz, Pedro Alonso, Juan Manuel Peña, Raúl Pérez‐Fernández   +3 more
wiley   +1 more source

Improving Diagnostic Accuracy for Surgical Pelvic Organ Prolapse: A Sequential Protocol Combining POP-Q Examination and Transperineal Ultrasound. [PDF]

J Clin Med
García-Mejido JA, Hurtado-Guijosa A, Fernández-Palacín A, Fernández-Palacín F, Bugatto F, Sainz-Bueno JA.   +5 more
europepmc   +1 more source

Ellipsoid‐Based Interval‐Type Uncertainty Model Updating Based on Riemannian Manifold and Gaussian Process Model

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Modern engineering systems require advanced uncertainty‐aware model updating methods that address parameter correlations beyond conventional interval analysis. This paper proposes a novel framework integrating Riemannian manifold theory with Gaussian Process Regression (GPR) for systems governed by Symmetric Positive‐Definite (SPD) matrix ...
Yanhe Tao, Qintao Guo, Jin Zhou, Cheng Yi   +3 more
wiley   +1 more source

Three dimensions of speech coherence in people with early psychosis and their family members. [PDF]

Schizophrenia (Heidelb)
Çokal D, Aloraini A, Palominos CF, Demirlek C, Verim B, Yalınçetin B, Bora E, Hinzen W.   +7 more
europepmc   +1 more source

Trajectory Control of Manipulator Robots With Uncertainties: A Saturated Continuous Integral Sliding Mode Approach

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT This study addresses the trajectory tracking control for manipulator robots with uncertainties. The main objective is to ensure that the robot follows a desired trajectory despite the presence of uncertainties/disturbances and considering control input constraints. The approach is developed in the framework of continuous integral sliding modes.
Emanuel Ortiz‐Ortiz, Juan Eduardo Velázquez‐Velázquez, Ramón Silva‐Ortigoza, Rosalba Galván‐Guerra   +3 more
wiley   +1 more source

Finite‐Time Disturbance Observer‐Based Nonlinear Robust Adaptive Control of Hydraulic Manipulator With Parameter Identification

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Hydraulic manipulators exhibit strong coupling, pronounced nonlinearities, and significant modeling uncertainties, which hinder high‐precision motion control. This paper proposes a finite‐time disturbance observer–based nonlinear robust adaptive control (RAC‐FTDO) framework enhanced by a physically consistent dynamic parameter identification ...
Tianyu Gao, Xianglong Liang, Wenxiang Deng, Jianyong Yao   +3 more
wiley   +1 more source

Editorial: Cerebrospinal fluid biomarkers in psychiatric and neurological disorders. [PDF]

Front Psychiatry
Garcia-Bohorquez K, Luykx J, Johnson MB, Gallego JA.   +3 more
europepmc   +1 more source

Paediatric Acute Generalised and Localised Exanthematous Pustulosis: A Systematic Review

JEADV Clinical Practice, EarlyView.
Miranda K. Branyiczky, Megan Lowe, Eric McMullen, Shireen Dumont, Narachai Julanon, Vincent Piguet, Cathryn Sibbald   +6 more
wiley   +1 more source

Bioclimatic, demographic and anthropogenic correlates of grizzly bear activity patterns in the Greater Yellowstone Ecosystem

Oikos, EarlyView.
Plasticity of diel activity rhythms may be a key element for adaptations of wildlife populations to changing environmental conditions. In the last decades, grizzly bears Ursus arctos in the Greater Yellowstone Ecosystem (GYE) have experienced notable environmental fluctuations, including changes in availability of food sources and severe droughts ...
Aurora Donatelli, Mark A. Haroldson, Justin G. Clapp, Paolo Ciucci, Frank T. van Manen   +4 more
wiley   +1 more source

Avoidant-Restrictive Food Intake Disorder in Patients With Gastrointestinal Disorders: A Systematic Review. [PDF]

J Hum Nutr Diet
Henriksen SB, Hornemann C, Hulgaard DR.
europepmc   +1 more source