Results 111 to 120 of about 575,418 (334)
Arthritis Care &Research, Accepted Article.Objective Somatic items used in depression assessments can potentially overlap with symptoms related to physical illness, including systemic sclerosis (SSc). No studies have looked at whether somatic depression items may be influenced by diffuse versus limited SSc disease subtypes, which are associated with varying degrees of symptom presentation.
Sophie Hu +109 more
wiley +1 more source
A Novel Orbit Parameterization in Spherical Coordinates
The Planetary Science JournalWe present a novel orbit parameterization in spherical coordinates. This parameterization enables the mixing of varying and invariant orbital parameters, and clarifies the physics of the orbit.
Kevin J. Napier, Matthew J. Holman
doaj +1 more source
Chiral fluids: a few theoretical issues
EPJ Web of Conferences, 2018 We review briefly a few topic concerning physics of fluids whose constituents are massless fermions interacting in chiral invariant way. Macroscopic manifestations of the chral anomaly is one of central issues.
Zakharov V. I., Teryaev O. V.
doaj +1 more source
Self-Similarities and Invariant Densities for Model Sets
, 1997 Model sets (also called cut and project sets) are generalizations of lattices. Here we show how the self-similarities of model sets are a natural replacement for the group of translations of a lattice.
Baake, Michael, Moody, Robert V.
core +1 more source
International Journal of Adaptive Control and Signal Processing, EarlyView.This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley +1 more source
Lorentz invariance without trans-Planckian physics?
Physics Letters B, 2013 9 pages, 1 figure, section about fluctuating cutoff added, final version to appear in ...
openaire +2 more sources
Unparticle physics with broken scale invariance
Physics Letters B, 2008 19 pages, 8 figures, 2 ...
Barger, Vernon +4 more
openaire +2 more sources
Current Tracking Adaptive Control of Brushless DC Motors
International Journal of Adaptive Control and Signal Processing, EarlyView.In this paper, the current tracking for Brushless Direct Current motors is approached considering uncertainty in the parameters of the motor's model. An adaptive control scheme to compensate electrical parameters uncertainty is proposed without requiring any knowledge of the mechanical parameters.
Fernanda Ramos‐García +3 more
wiley +1 more source
CPT invariance and neutrino physics
, 2010 CPT invariance in neutrino physics has attracted attention after the revival of the hypothetical idea that neutrino and antineutrino might have nonequal masses ($m_{\bar } \neq m_ $) when realizing neutrino oscillations as a new sensitive phenomenon to search for the violation of this fundamental symmetry.
openaire +2 more sources
International Journal of Adaptive Control and Signal Processing, EarlyView.This work introduces an adaptive human pilot model that captures pilot time‐delay effects in adaptive control systems. The model enables the prediction of pilot–controller interactions, facilitating safer integration and improved design of adaptive controllers for piloted applications.
Abdullah Habboush, Yildiray Yildiz
wiley +1 more source