Results 81 to 90 of about 20,514,878 (278)
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Building on our prior Behavioral Risk Factor Surveillance System analysis identifying adults aged 18–39 as the primary driver of the national increase in self‐reported cognitive disability, we examined factors associated with this rise using 2013–2024 U.S. BRFSS data. Methods We analyzed U.S.
Adam de Havenon +9 more
wiley +1 more source
On the stability of approximate displaced lunar orbits [PDF]
, 2010 In a prior study, a methodology was developed for computing approximate large displaced orbits in the Earth-Moon circular restricted three-body problem (CRTBP) by the Moon-Sail two-body problem.
Simo, Jules, McInnes, Colin
core +2 more sources
Canceling Effects of Conjunctions Render Higher-order Mean Motion Resonances Weak
The Astrophysical JournalMean motion resonances (MMRs) are a key phenomenon in orbital dynamics. The traditional disturbing function expansion in celestial mechanics shows that, for coplanar systems at low eccentricities, p : p − q MMRs exhibit a clear hierarchy of strengths ...
Elizabeth K. Jones +3 more
doaj +1 more source
An Analysis of the Restricted Euler Problem Using Symplectic Integrators
Edinburgh Student Journal of ScienceThe Three-Body Problem is far from fully solved despite centuries of effort. The restricted Euler Problem is a special case in which two bodies are fixed in place, resulting in two Poisson-commuting conserved quantities, allowing the system to be fully ...
Henry Yip, Jennifer Smillie
doaj +1 more source
Deep Learning Pose Estimation for Phenotyping of Co‐Occurring Hyperkinetic Movement Disorders
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective To explore whether routine outpatient video combined with deep learning‐based pose estimation and clinically interpretable kinematic features can support multi‐label phenotyping of co‐occurring hyperkinetic movement disorders (HMDs).
Laura Cif +17 more
wiley +1 more source
Reserves, Injury Severity, and Outcomes in Traumatic Brain Injury: A CENTER‐TBI Observational Study
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Reserve refers to the brain's ability to maintain function after an injury and strongly relates to traumatic brain injury (TBI) outcomes. This study examined (1) whether associations between pre‐injury reserve proxies and outcomes differed across injury severity categories, and (2) whether the impact of injury severity varied across ...
Natascha Ekdahl +6 more
wiley +1 more source
Remote SensingIn the realm of precision space applications, improving the accuracy of orbit determination (OD) is a crucial and demanding task, primarily because of the presence of measurement noise.
Zhe Zhang, Yishuai Shi, Zuoxiu Zheng
doaj +1 more source
Three bodies, no problem [PDF]
Nature Reviews Physics, 2019 The three-body problem is relevant for astrophysical phenomena such as black hole mergers. It famously lacks a general analytical solution, but a new statistical solution relates the distributions of final and initial states, while requiring fewer assumptions than previous approaches.
openaire +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Progressive brain atrophy has now been widely observed in the chronic stages of moderate–severe traumatic brain injury (msTBI), but there is only coarse information regarding its prevalence and magnitude, and whether rate of atrophy accelerates or attenuates across time. We examined these questions in a Canadian inception cohort from
Robin E. A. Green +6 more
wiley +1 more source
Secular Evolution of a Two-Planet System of Three Bodies with Variable Masses
UniverseA classical three-body problem with two planets moving around a central star of variable mass on quasi-periodic orbits is considered. The bodies are assumed to attract each other according to Newton’s law of universal gravitation. The star loses its mass
Alexander Prokopenya +2 more
doaj +1 more source