Results 21 to 30 of about 283,222 (186)
Discrete Mathematics (2023), 2023 We study rotation $r$-graphs and show that for every $r$-graph $G$ of odd regularity there is a simple rotation $r$-graph $G'$ such that $G$ can be obtained form $G'$ by a finite number of $2$-cut reductions. As a consequence, some hard conjectures as the (generalized) Berge-Fulkerson Conjecture and Tutte's 3- and 5-flow conjecture can be reduced to ...
arxiv +1 more source
Arithmetic, 2023 The low mathematical understanding and reasoning skills of students along with abstract mathematical concepts make it difficult for students to understand mathematical concepts.
Indah Ayu Kusumawardani +3 more
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Fast Normalized Cross-Correlation for Template Matching with Rotations [PDF]
Journal of Applied Mathematics and Computing (2024), 2023 Normalized cross-correlation is the reference approach to carry out template matching on images. When it is computed in Fourier space, it can handle efficiently template translations but it cannot do so with template rotations. Including rotations requires sampling the whole space of rotations, repeating the computation of the correlation each time ...
arxiv +1 more source
Exact Rotational Space-time Transformations, Davies-Jennison Experiments and Limiting Lorentz-Poincaré Invariance [PDF]
Eur. Phys. J. Plus (2013) 128:74, 2013 Jennison deduced from the rotational experiments that a rotating radius $r_r$ measured by the rotating observer is contracted by $r_r = r(1-\om^2 r^2/c^2)^{1/2}$, compared with the radius $r$ measured in an inertial frame. This conclusion differs from the result based on Lorentz transformations.
arxiv +1 more source
JRPM (Jurnal Review Pembelajaran Matematika), 2022 This study aims to describe the spatial ability of masculine male and feminine female students in solving geometric problems. The subjects of this study are one masculine male gender and one feminine female gender junior high school students who had the ...
Siti Suparmi +2 more
doaj +1 more source
A mathematical study on the local fluid rotation axis [PDF]
arXiv, 2021 As widely recognized, vortex represents flow rotation. Vortex should have a local rotation axis as its direction and angular speed as its strength. Vorticity vector has been considered the rotation axis, and vorticity magnitude the rotational strength for a long time in classical fluid kinematics.
arxiv
Wigner Rotations in Laser Cavities [PDF]
Phys.Rev.E66:26604,2002, 2001 The Wigner rotation is a key word in many branches of physics, chemistry and engineering sciences. It is a group theoretical effect resulting from two Lorentz boosts. The net effect is one boost followed or preceded by a rotation. This rotation can therefore be formulated as a product of three boosts. In relativistic kinematics, it is a rotation in the
arxiv +1 more source
Experimental but not Sex Differences of a Mental Rotation Training Program on Adolescents
Frontiers in Psychology, 2016 Given the importance of visuospatial processing in areas related to the STEM (Science, Technology, Engineering, and Mathematics) disciplines, where there is still a considerable gap in the area of sex differences, the interest in the effects of ...
Antonio Rodán-González +5 more
doaj +1 more source
Analisis Unsur Matematika pada Motif Sulam Usus
Numerical: Jurnal Matematika dan Pendidikan Matematika, 2017 Based on interviews with researchers sources said that the beginning of the intestine embroidery is an art of genuine crafts. Called the intestine embroidery because this technique is a technique of combining a strand of cloth resembling the intestine ...
Fredi Ganda Putra, Leni Zuni Isnawati
doaj +1 more source
Frontiers in Psychology, 2019 This study evaluates boy-girl differences in 3D mental rotation in schoolchildren aged 7–12 years and the relation to arithmetic performance. A dedicated new task was developed: The Mental Rotation Task – Children (MRT-C).
Marleen van Tetering +3 more
doaj +1 more source