Results 41 to 50 of about 2,571,706 (401)

Research on Tangential Velocity Solution and Accuracy Analysis of Radar Target [PDF]

open access: yesMATEC Web of Conferences, 2023
In this paper, a calculation method for the tangential velocity solution of radar target based on linear vector method is proposed. It makes full use of the advantage of high precision radial velocity measurement of radar, and realizes the accurate ...
Yin Qi   +3 more
doaj   +1 more source

A wide star–black-hole binary system from radial-velocity measurements [PDF]

open access: yesNature, 2019
All stellar-mass black holes have hitherto been identified by X-rays emitted from gas that is accreting onto the black hole from a companion star. These systems are all binaries with a black-hole mass that is less than 30 times that of the Sun1–4. Theory
Jifeng Liu   +54 more
semanticscholar   +1 more source

Conceptual Design and Parametric Optimization of a New Multileveled Horsetail Structure for Bicycle Helmets

open access: yesAdvanced Engineering Materials, EarlyView., 2023
This study aims to explore the feasibility of using a structure inspired by the features of horsetail and human spine as the potential helmet liner, targeting at mitigation of acceleration‐induced injuries. A parametric study is conducted to investigate the effect of individual geometrical variables in the design, indicating its capability to reduce ...
Bing Leng   +3 more
wiley   +1 more source

Hemodynamic Data Analysis and Site of Measurement in Children and Adolescents

open access: yesArtery Research, 2020
Pulse wave velocity is a method of functional vascular evaluation. The gold standard is the carotid-femoral pulse wave velocity measurement. However, the software allows measurement among radial, carotid and femoral artery.
Mirjam Močnik, Nataša Marčun Varda
doaj   +1 more source

Flexural Behavior of Bidirectionally Graded Lattice

open access: yesAdvanced Engineering Materials, EarlyView., 2023
An experimental study of the bending behavior of bidirectional body‐centered cubic lattice beams is conducted in comparison to uniform and unidirectional counterparts of electron beam melted SS 316 L. Experimental results are used to develop and validate a finite element model which is subsequently used to conduct parametric studies to assess the ...
Chamini Rodrigo   +4 more
wiley   +1 more source

A Study of the Radial Velocity of BX Andromedae [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2004
High resolution spectroscopic observations of BX And using the BOES (Bohyunsan Optical Echelle Spectrograph) of Bohyunsan Optical Astronomical Observatory (BOAO) were performed during 26-27, Feb. 2003.
Chung-Uk Lee   +3 more
doaj   +1 more source

On the Accuracy of Gaia Radial Velocities [PDF]

open access: yesOpen Astronomy, 2001
12 pages, 2 figures, 5 tables, in press in Baltic ...
L. Tomasella, P. Agnolin, U. Munari
openaire   +4 more sources

Gaia Early Data Release 3: Updated radial velocities from Gaia DR2 [PDF]

open access: yesA&A 653, A160 (2021), 2021
Gaia's Early Third Data Release (EDR3) does not contain new radial velocities because these will be published in Gaia's full third data release (DR3), expected in the first half of 2022. To maximise the usefulness of EDR3, Gaia's second data release (DR2) sources (with radial velocities) are matched to EDR3 sources to allow their DR2 radial velocities ...
arxiv   +1 more source

Allesfitter: Flexible Star and Exoplanet Inference from Photometry and Radial Velocity [PDF]

open access: yesAstrophysical Journal Supplement Series, 2019
We present allesfitter, a public and open-source Python software for flexible and robust inference of stars and exoplanets given photometric and radial velocity data.
M. Gunther, T. Daylan
semanticscholar   +1 more source

Investigation of the Uniformity of Gel Shrinkage by Imaging Tracer Particles Using X‐Ray Microtomography

open access: yesAdvanced Engineering Materials, EarlyView., 2023
A novel method for tracking structural changes in gels using widely accessible microcomputed tomography is presented and validated for various hydro‐, alco‐, and aerogels. The core idea of the method is to track positions of micrometer‐sized tracer particles entrapped in the gel and relate them to the density of the gel network.
Anja Hajnal   +3 more
wiley   +1 more source

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