Results 81 to 90 of about 1,183 (224)
Abstract Background Sleep disturbances are widely considered to be a transdiagnostic feature of common behavioural and emotional difficulties in childhood, yet most studies treat sleep as a single construct. Where studies have explored specific sleep problems to psychopathology in children, these tend to only include behavioural or emotional ...
Alina A. Marinca +4 more
wiley +1 more source
Magnetic Stability Analysis for the Geodynamo [PDF]
Kinematic dynamo modelling addresses the growth of magnetic fields under the action of fluid flow, effected in the geophysical case by the action of the convecting electrically conducting outer core and magnetic diffusion. In this study, we prescribe the
Livermore, Philip
core
ABSTRACT This paper considers the tensions between different organizational strategic decision‐making approaches at various levels of uncertainty. Of particular focus are the mechanisms for defaulting to lower uncertainty, from the Cynefin framework's unordered chaotic and complex domains to the more ordered complicated and obvious domains.
Richard J. Logan +3 more
wiley +1 more source
Voice and Speech in Atypical Parkinsonian Disorders
Background Motor speech disorders are early, common, and functionally limiting features of atypical parkinsonian disorders (APDs) such as progressive supranuclear palsy (PSP), corticobasal syndrome (CBS), and multiple system atrophy (MSA). These impairments are underrecognized and undertreated in neurology clinics.
Federico Rodriguez‐Porcel +48 more
wiley +1 more source
Using the theory of functional connections to create periodic orbits with a linear variable thrust
This paper shows that the Theory of Functional Connections (TFC) can be used to find the thrust (given by a sub-optimal linear control law) required to create and maintain periodic orbits, like resonant orbits with the rotation of the Earth. Thus, the
de Almeida, Allan Kardec +2 more
core +1 more source
Satellite relative motion propagation and control in the presence of J2 perturbations [PDF]
Formation flying is a new satellite mission concept that is concerned with clusters of satellites in neighboring orbits cooperating to perform a specific task.
Sengupta, Prasenjit
core
Abstract Background Female sex is an independent fall risk factor in Parkinson's disease (PD), yet sex‐specific fall patterns remain unclear. Objectives To compare sex‐specific fall risk and outcomes across PD, prodromal alpha‐synucleinopathy (PAS), and healthy controls (HC); estimate fall frequency across PD progression; and assess how sex modifies ...
Joaquin A. Vizcarra +197 more
wiley +1 more source
Linear Mechatronic Modeling of Rectangular Tank Sloshing Dynamics
ABSTRACT Sloshing dynamics in partially filled tanks can strongly influence system‐level behavior when fluid motion couples with rigid‐body dynamics. This paper presents a linear and acausal two‐dimensional sloshing model for rectangular tanks, based on the reformulation of established sloshing theory within a modular, multi‐domain modeling framework ...
Magnus Steinstø, Eilif Pedersen
wiley +1 more source
Hybrid physics–data‐driven modeling for sea ice thermodynamics and transfer learning
Icepack–NN, a machine‐learning‐based hybrid version of the sea‐ice column model Icepack, is developed to correct state‐dependent forecast errors arising from misspecified snow thermodynamics, using neural networks applied online within the physical model.
G. De Cillis +7 more
wiley +1 more source
Sliding Mode Control in Aerospace Applications: A Survey
ABSTRACT Sliding mode control (SMC) enjoys robustness to matched and unmatched (in the case of minimum phase input‐output dynamics) bounded perturbations, and finite time convergence. Second‐order and higher‐order sliding mode control systems (2‐SMC/HOSMC) retain all the advantages of sliding mode control, but in addition can be applied to systems of ...
Yuri Shtessel, Christopher Edwards
wiley +1 more source

