Results 11 to 20 of about 1,666,255 (290)

Statistical Evaluation of Transformation Methods Accuracy on Derived Pathological Vectorcardiographic Leads

open access: yesIEEE Journal of Translational Engineering in Health and Medicine, 2022
Objective: Vectorcardiography (VCG) as an alternative form of ECG provides important spatial information about the electrical activity of the heart.
Jaroslav Vondrak, Marek Penhakert
doaj   +1 more source

Thirty-six full matrix forms of the Pascal triangle: Derivation and symmetry relations

open access: yesScientific African, 2021
For all 2≤n∈N, the four vertices (00),(n0),(2nn),(nn) of the Pascal Triangle expanded from level 0 to level 2n define the greatest embedded rhomboid sub-block denoted n−GRSB in this paper.
Prosper K. Doh   +2 more
doaj   +1 more source

Comment on “Defining a curve as a Bezier curve”

open access: yesJournal of Taibah University for Science, 2020
In a recent article published in this journal, Baydas and Karakas show how to compute the Bézier representation of a curve given in power form. We note that this straightforward exercise, including a closed-form expression for the transformation matrix ...
J. Sánchez-Reyes
doaj   +1 more source

Augmented reality usage for prototyping speed up

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2011
The integral part of production process in many companies is prototyping. Although, these companies commonly have high quality visualization tools (large screen projections, virtual reality), prototyping was never abandoned. There is a number of reasons.
Jiří Šťastný   +3 more
doaj   +1 more source

Expression of strain tensor in orthogonal curvilinear coordinates

open access: yesGeodesy and Geodynamics, 2010
Based on an analysis of connotation and extension of the concept of the orthogonal curvilinear coordinates, we have deduced a platform of strain tensor expression of Cartesian coordinates, which turns out to be a function of Lame coefficient and unit ...
Xuyan Liu, Yingfeng Ji, Quanqiang Liang
doaj   +1 more source

Real-time pose estimation of underground unmanned aerial vehicle based on ICP method

open access: yesGong-kuang zidonghua, 2019
In view of characteristics of no GPS signal, low illumination and structured environment in coal mine, a real-time pose estimation method for underground unmanned aerial vehicle (UAV) based on iterative closest point (ICP) was proposed.
WANG Yan   +3 more
doaj   +1 more source

Multipole matrix elements of Green function of Laplace equation [PDF]

open access: yes, 2015
Multipole matrix elements of Green function of Laplace equation are calculated. The multipole matrix elements of Green function in electrostatics describe potential on a sphere which is produced by a charge distributed on the surface of a different ...
Górka, Przemysław, Makuch, Karol
core   +1 more source

Loop Transfer Matrix and Loop Quantum Mechanics [PDF]

open access: yes, 2000
We extend the previous construction of loop transfer matrix to the case of nonzero self-intersection coupling constant $\kappa$. The loop generalization of Fourier transformation allows to diagonalize transfer matrices depending on symmetric difference ...
Savvidy, G. K.
core   +2 more sources

Critical Temperature Range in Standard and Ni-bearing Spheroidal Graphite Cast Irons [PDF]

open access: yes, 2012
Describing the conditions for reaustenitization of spheroidal graphite cast irons is of interest for their heat-treatment after casting, e.g. for manufacturing austempered ductile irons.
Ghergu, Roxana   +3 more
core   +4 more sources

The Development of Enterprise Competencies in the Context of Digitalization [PDF]

open access: yesProblemi Ekonomiki
The activation of processes related to digitalization – the penetration of digital technologies into all areas of activity – creates broad opportunities for improving the operations of enterprises, in particular for the development of their competencies,
Serhiienko Olena A.   +1 more
doaj   +1 more source

Home - About - Disclaimer - Privacy