Results 81 to 90 of about 2,549,521 (376)
Radial Velocity Fitting Challenge. I. Simulating the data set including realistic stellar radial-velocity signals [PDF]
, 2016 Stellar signals are the main limitation for precise radial-velocity (RV) measurements. These signals arise from the photosphere of the stars. The m/s perturbation created by these signals prevents the detection and mass characterization of small-mass ...
X. Dumusque, X. Dumusque
semanticscholar +1 more source
Expanding Hereditary Spastic Paraplegias Limits: Biallelic SPAST Variants in Cerebral Palsy Mimics
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Hereditary spastic paraplegias (HSP) are rare neurodegenerative disorders marked by spasticity and lower limb weakness. The most common type, SPG4, is usually autosomal dominant and caused by SPAST gene variants, typically presenting as pure HSP.
Gregorio A. Nolasco +18 more
wiley +1 more source
Report of IAU Commission 30 on Radial Velocities (2006-2009) [PDF]
, 2008 Brief summaries are given on the following subjects: Radial velocities and exoplanets (Toward Earth-mass planets; Retired A stars and their planets; Current status and prospects); Toward higher radial velocity precision; Radial velocities and ...
Glushkova, E. V. +7 more
core +1 more source
Radial velocity data analysis with compressed sensing techniques [PDF]
, 2016 We present a novel approach for analysing radial velocity data that combines two features: all the planets are searched at once and the algorithm is fast.
N. Hara, G. Bou'e, J. Laskar, A. Correia
semanticscholar +1 more source
Data‐Driven Distributed Safe Control Design for Multi‐Agent Systems
International Journal of Adaptive Control and Signal Processing, EarlyView.This paper presents a data‐driven control barrier function (CBF) technique for ensuring safe control of multi‐agent systems (MASs) with uncertain linear dynamics. A data‐driven quadratic programming (QP) optimization is first developed for CBF‐based safe control of single‐agent systems using a nonlinear controller. This approach is then extended to the
Marjan Khaledi, Bahare Kiumarsi
wiley +1 more source
Structure of turbulent velocity field in the discharge stream from a standard Rushton turbine impeller [PDF]
Chemical Industry and Chemical Engineering Quarterly, 2017 The radial discharge jet from a standard Rushton turbine was investigated by the Laser Doppler Anemometry (LDA) method. Several distances from the impeller blades (in the radial direction) were chosen for the measurement of axial profiles: all three ...
Kysela Bohuš +3 more
doaj +1 more source
Velocity and velocity bounds in static spherically symmetric metrics
, 2010 We find simple expressions for velocity of massless particles in dependence of the distance $r$ in Schwarzschild coordinates. For massive particles these expressions put an upper bound for the velocity.
Arraut, I., Batic, D., Nowakowski, M.
core +1 more source
RADIAL VELOCITY MONITORING OF KEPLER HEARTBEAT STARS [PDF]
, 2016 Heartbeat stars (HB stars) are a class of eccentric binary stars with close periastron passages. The characteristic photometric HB signal evident in their light curves is produced by a combination of tidal distortion, heating, and Doppler boosting near ...
Avi Shporer +8 more
semanticscholar +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
暴雨灾害, 2022 Reflectivity and Doppler velocity measurements from the new generation weather radar provide important input for the identification and early warning of severe storms and tornadoes.
Yanjiao XIAO +3 more
doaj +1 more source