Results 91 to 100 of about 2,549,521 (376)

Characterizing a cluster's dynamic state using a single epoch of radial velocities

open access: yes, 2012
Radial velocity measurements can be used to constrain the dynamical state of a stellar cluster. However, for clusters with velocity dispersions smaller than a few km/s the observed radial velocity distribution tends to be dominated by the orbital motions
Adams   +40 more
core   +1 more source

Long-term radial-velocity variations of the Sun as a star: The HARPS view [PDF]

open access: yes, 2016
Stellar radial velocities play a fundamental role in the discovery of extrasolar planets and the measurement of their physical parameters as well as in the study of stellar physical properties.
Antonino Francesco Lanza   +3 more
semanticscholar   +1 more source

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

open access: yesAdvanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian   +4 more
wiley   +1 more source

Measurement of target radial velocity

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2015
The multichannel and single-channel measuring instruments of target radial velocity with use multifrequency signals at presence correlated and non-correlated handicapes are synthesized.
D. I. Popov
doaj  

Optimisasi Waktu Tempuh Pada Multi-AGV Menggunakan Particle Swarm Optimization

open access: yesJurnal Ilmiah Teknik Industri, 2016
An algorithm for velocity planning on a continuous-curvature path of a pair of automated guided vehicles (AGVs) that minimizing its travelling time is presented. A class of 3-degree Bezier curves is used as basic form of the path.
Anugrah Kusumo Pamosoaji
doaj   +1 more source

Electron Heat Flux Instabilities in the Inner Heliosphere: Radial Distribution and Implication on the Evolution of the Electron Velocity Distribution Function [PDF]

open access: hybrid, 2021
Heyu Sun   +8 more
openalex   +1 more source

The Radial Velocities of Globular Clusters [PDF]

open access: yesProceedings of the National Academy of Sciences, 1930
The following discussion of the radial velocities of globular clusters originated in conversations which I had with Dr. Zwicky of the California Institute of Technology during my stay at the Mount Wilson Observatory. Since it depends essentially on the validity of Stromberg's solution for the motion of the sun relative to the system of the globular ...
openaire   +2 more sources

A Goldilocks principle for modelling radial velocity noise [PDF]

open access: yes, 2016
F. Feng, M. Tuomi, H. R. A. Jones, R. P. Butler, and S. Vogt, 'A Goldilocks principle for modelling radial velocity noise', MNRAS, Vol. 461 (3): 2440-2452, first published online on 20 June 2016, the version of record is available online at doi: 10.1093 ...
F. Feng   +4 more
semanticscholar   +1 more source

Laser Metal Deposited Ti4822 Hollow Pipe: Experimental and Computational Modelling Study

open access: yesAdvanced Engineering Materials, EarlyView.
Laser metal deposition (LMD) of a crack‐free built Ti4822 alloys is challenging. This article reports outstanding characteristics of a hollow pipe that is built with LMD technology when a predicted, nontransformation substrate temperature of 800 °C is used.
Sadiq A. Raji   +5 more
wiley   +1 more source

Electrospark‐Deposited AlCrFeCoNi High‐Entropy Alloy Coatings on Steel: Microstructure Evolution, Mechanical Properties, and Corrosion Response

open access: yesAdvanced Engineering Materials, EarlyView.
AlCrFeCoNi high entropy alloy coating is applied on steel using electrospark deposition. The microstructure evolution and phase transformation of the as‐deposited and heat‐treated coatings is characterized and discussed. Reduced microhardness and yield strength are measured after heat treatment.
Jihui Yan   +4 more
wiley   +1 more source

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