Results 11 to 20 of about 5,446 (116)

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

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

Equiconvergence of matrix transformations [PDF]

open access: yesProceedings of the American Mathematical Society, 1978
Equiconvergence of matrix transformations is related to the existence of Tauberian constants. Agnew’s result on the equiconvergence of Cesàro and Riesz means is shown to be best possible. Finally, equiconvergence of equivalent arithmetical summation methods related to the prime number theorem is investigated.
openaire   +2 more sources

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

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

Calculations on Matrix Transformations Involving an Infinite Tridiagonal Matrix [PDF]

open access: yesAxioms, 2021
Given any sequence z=znn≥1 of positive real numbers and any set E of complex sequences, we write Ez for the set of all sequences y=ynn≥1 such that y/z=yn/znn≥1∈E; in particular, sz0 denotes the set of all sequences y such that y/z tends to zero. Here, we consider the infinite tridiagonal matrix Br,s,t˜, obtained from the triangle Br,s,t, by deleting ...
Fares, Ali   +2 more
openaire   +2 more sources

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

Matrix Shanks Transformations

open access: yesThe Electronic Journal of Linear Algebra, 2019
Shanks' transformation is a well know sequence transformation for accelerating the convergence of scalar sequences. It has been extended to the case of sequences of vectors and sequences of square matrices satisfying a linear difference equation with scalar coefficients.
Brezinski, Claude   +1 more
openaire   +2 more sources

Creating Transformations for Matrix Obfuscation [PDF]

open access: yes, 2009
There are many programming situations where it would be convenient to conceal the meaning of code, or the meaning of certain variables. This can be achieved through program transformations which are grouped under the term obfuscation . Obfuscation is one of a number of techniques that can be employed to protect sensitive areas of code.
Drape, S, Voiculescu, I
openaire   +2 more sources

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