Results 11 to 20 of about 543,632 (147)

Minkowski tensors of anisotropic spatial structure [PDF]

open access: yesNew Journal of Physics, 2013
This paper describes the theoretical foundation of and explicit algorithms for a novel approach to morphology and anisotropy analysis of complex spatial structure using tensor-valued Minkowski functionals, the so-called Minkowski tensors .
G E Schröder-Turk   +6 more
doaj   +6 more sources

Exploring Limit Cycles of Differential Equations through Information Geometry Unveils the Solution to Hilbert’s 16th Problem [PDF]

open access: yesEntropy
The detection of limit cycles of differential equations poses a challenge due to the type of the nonlinear system, the regime of interest, and the broader context of applicable models.
Vinícius Barros da Silva   +2 more
doaj   +2 more sources

Validation of scales for measuring factors of teaching quality from the dynamic model of educational effectiveness [PDF]

open access: yesPsihologija, 2022
Large-scale educational effectiveness research requires valid student questionnaires to assess teaching practices. This research validated eight scales for measuring teaching factors from the Dynamic Model of Educational Effectiveness (DMEE).
Bodroža Bojana   +2 more
doaj   +1 more source

Pre-service mathematics teachers’ understanding of vector

open access: yesJurnal Math Educator Nusantara: Wahana Publikasi Karya Tulis Ilmiah di Bidang Pendidikan Matematika, 2023
Vector is an important concept in mathematics. Pre-service mathematics teachers explore vector concepts in several courses. This concept is also related to various concepts in mathematics.
Kimura Patar Tamba
doaj   +1 more source

Factor structure and measurement invariance of the TIMSS 2015 mathematics attitude questionnaire: Exploratory structural equation modelling approach

open access: yesInternational Journal of Assessment Tools in Education, 2021
In the current study, the appropriateness of the Mathematics Attitude Questionnaire administered to middle school 8th grade students in the TIMSS 2015 application to the exploratory structural equation and confirmatory factor analysis models was examined.
Şeyma Uyar
doaj   +1 more source

Local Mathematics and No Information at a Distance; Some Effects on Physics and Geometry

open access: yesProceedings, 2020
Local mathematics consists of a collection of mathematical systems located at each space and time point. The collection is limited to the systems that include numbers in their axiomatic description.
Paul Benioff
doaj   +1 more source

Measuring Stereotype Threat at Math and Language Arts in Secondary School: Validation of a Questionnaire

open access: yesFrontiers in Psychology, 2021
A stereotype threat arises when a negative stereotype about group to which an individual belongs is activated. It affects the achievement and interest of students in a particular academic domain, e.g., girls at math or boys at language arts. Hence, it is
Sylwia Bedyńska   +2 more
doaj   +1 more source

Complex Scalar fields in Scalar-Tensor and Scalar-Torsion theories [PDF]

open access: yes, 2022
We investigate the cosmological dynamics in a spatially flat Friedmann--Lema\^{\i}tre--Robertson--Walker geometry in scalar-tensor and scalar-torsion theories where the nonminimally coupled scalar field is a complex field. We derive the cosmological field equations and we make use of dimensionless variables in order to determine the stationary points ...
arxiv   +1 more source

On the Geometry of Three-dimensional Pseudo-Riemannian Homogeneous Spaces. II [PDF]

open access: yesИзвестия Саратовского университета. Новая серия. Серия Математика. Механика. Информатика, 2020
The problem of establishing links between the curvature and the topological structure of a manifold is one of the important problems of the geometry. In general, the purpose of the research of manifolds of various types is rather complicated.
Mozhey, Natal’ya Pavlovna
doaj   +1 more source

On the Geometry of Three-dimensional Pseudo-Riemannian Homogeneous Spaces. I [PDF]

open access: yesИзвестия Саратовского университета. Новая серия. Серия Математика. Механика. Информатика, 2020
The problem of establishing links between the curvature and the topological structure of a manifold is one of the important problems of geometry. In general, the purpose of the research of manifolds of various types is rather complicated.
Natal’ya Pavlovna Mozhey
doaj   +1 more source

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