Results 71 to 80 of about 22,193,544 (297)

Braids of the N-body problem I : cabling a body in a central configuration

, 2021
: We prove the existence of periodic solutions of the N = (n + 1)-body problem starting with n bodies whose reduced motion is close to a non-degenerate central configuration and replacing one of them by the center of mass of a pair of bodies rotating ...
Garcia-Azpeitia, Carlos, Fontaine, Marine, Carlos García-Azpeitia, Marine Fontaine   +3 more
core   +1 more source

Prodromal Lewy Body Disorder Features in REM Sleep Behavior Disorder With Biomarker‐Defined Synucleinopathy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Isolated rapid eye movement sleep behavior disorder (iRBD) is a prodromal state for Lewy body disorders and exhibits biological heterogeneity that may influence clinical expression and progression. We examined clinical features in individuals with iRBD and biomarker‐defined synucleinopathy.
Daniel Weintraub, Michele K. York, Roseanne Dobkin, Anuprita R. Nair, Ryan Kurth, David‐Erick Lafontant, Chelsea Caspell‐Garcia, Roy N. Alcalay, Ethan G. Brown, Lana M. Chahine, Christopher Coffey, Tatiana Foroud, Douglas Galasko, Karl Kieburtz, Kenneth Marek, Kalpana Merchant, Brit Mollenhauer, Kathleen L. Poston, Andrew Siderowf, Cristina Simonet, Tanya Simuni, Caroline M. Tanner, Thomas F. Tropea, Aleksandar Videnovic, The Parkinson's Progression Markers Initiative   +24 more
wiley   +1 more source

MEGASIM: Distribution and Detection of Earth Trojan Asteroids

The Astrophysical Journal
Using N -body simulation results from the MEGASIM data set, we present spatial distributions of Earth Trojan Asteroids and assess the detectability of the population in current and next-generation ground-based astronomical surveys.
Travis Yeager, Nathan Golovich, Kerianne Pruett   +2 more
doaj   +1 more source

Analytic harmonic approach to theN-body problem

, 2011
International audienceWe consider an analytic way to make the interacting N -body problem tractable by using harmonic oscillators in place of the relevant two-body interactions.
A S Jensen, J R Armstrong, D V Fedorov, Zinner, N T, Fedorov, D V, N T Zinner, Armstrong, J R, Jensen, a S   +7 more
core   +1 more source

Comprehensive Characterization of 98 Chinese Cases of Genetic Creutzfeldt‐Jakob Disease With T188K Mutation

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To characterize the demographic, clinical, and laboratory features of the Chinese patients of genetic Creutzfeldt‐Jakob disease with T188K variant (T188K‐gCJD), the most common subtype of genetic prion diseases (gPrDs) in China. Methods In this nationwide retrospective study, data from 98 genetically confirmed T188K‐gCJD patients ...
Chun‐Jie Li, Dong‐Lin Liang, Li‐Ping Gao, Wei‐Wei Zhang, Wei Zhou, A. Ruhan, Bing Xu, Run‐Dong Cao, Kang Xiao, Cao Chen, Qi Shi, Xiao‐Ping Dong   +11 more
wiley   +1 more source

Adjacent Zero Communication Parallel Cloud Computing Method and Its System for N-Body Problem with Short-Range Interaction Domain Decomposition

Advances in Astronomy, 2016
Although parallel computing is used in the existing numerical solutions of N-body problem, tons of communications between N particles render the parallel efficiency extremely low.
Dingju Zhu
doaj   +1 more source

TimThuering/N-Body-Simulation: Version 1.1

, 2023
<p>SYCL code for n-body simulations with the naive algorithm and the Barnes-Hut algorithm</p ...
Marcel Breyer, Tim Thüring
core   +1 more source

Digital Cognitive Phenotyping for Differential Diagnosis and Monitoring in Neurological Conditions

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To assess the utility, accessibility, and equivalence to supervised scales of online cognitive assessment in older individuals with cognitive impairment. Methods Patients with Alzheimer's disease (AD, n = 31), idiopathic normal pressure hydrocephalus (iNPH, n = 26), and traumatic brain injury (TBI, n = 23) completed online cognitive ...
Martina Del Giovane, Valentina Giunchiglia, Michael C. B. David, Magdalena A. Kolanko, William R. Trender, Peter J. Hellyer, Harmeena Kaur, David J. Sharp, Christopher Carswell, Paresh A. Malhotra, Adam Hampshire   +10 more
wiley   +1 more source

N-body problem in $R^n$: Necessary conditions for a constant configuration measure

Electronic Journal of Differential Equations, 2008
A formulation of the N-body problem is presented in which $m_{i}$ and $r_{i}in mathbb{R}^d$ are the mass and the position vector of the i-th body, $ x=(sqrt{m_{1}}r_{1},dots ,sqrt{m_{N}}r_{N})in mathbb{R}^n$ and $ n=dN$ ($d=1,2,3$).
Kal Zare
doaj  

Canceling Effects of Conjunctions Render Higher-order Mean Motion Resonances Weak

The Astrophysical Journal
Mean 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, Samuel Hadden, Supakrai Teekamongkol, Daniel Tamayo   +3 more
doaj   +1 more source