Results 31 to 40 of about 237,242 (260)

An Exploration of Learners’ Understanding of Euclidean Geometric Concepts: A Case Study of Secondary Schools in the OR Tambo Inland District of the Eastern Cape [PDF]

open access: yesE-Journal of Humanities, Arts and Social Sciences
A major concern in South Africa is the poor performance of learners in mathematics, particularly in geometry. This paper therefore sought to explore the learners’ understanding of Euclidean geometric concepts.
Thabisa Maqoqa
doaj   +1 more source

Do mito da Geometria Euclidiana ao ensino das Geometrias Não Euclidianas

open access: yesVértices, 2010
Das tentativas frustradas de provar que o quinto postulado de Euclides era um teorema, surgiram as Geometrias Não Euclidianas. Com os quatro primeiros postulados de Euclides e a negação do quinto, surgiram outras Geometrias cujos postulados são possíveis
Mylane dos Santos Barreto   +1 more
doaj   +1 more source

Non-Euclidean geometry in nature

open access: yes, 2017
I describe the manifestation of the non-Euclidean geometry in the behavior of collective observables of some complex physical systems. Specifically, I consider the formation of equilibrium shapes of plants and statistics of sparse random graphs.
Nechaev, Sergei
core   +1 more source

Developing the usage index for teaching with technology: A case study for Motheo district, South Africa

open access: yesThe Journal for Transdisciplinary Research in Southern Africa, 2020
Virtual reality has taken the world by storm over the past decade where learners are allowed to gain experiences that are not possible with ordinary teaching methods.
Bernard M. Hlalele
doaj   +1 more source

Geometric perspective to Degree–Based topological indices of supramolecular chain

open access: yesResults in Engineering, 2022
Sombor index and their types are introduced pertaining to Euclidean geometry. In graph-theoretical terminology, it is the sum of all pairs of adjacent vertices di2+dj2 given di is the degree of ith vertex.
Muhammad Imran   +4 more
doaj   +1 more source

An Observer-Based View of Euclidean Geometry

open access: yesMathematics
An influence network of events is a view of the universe based on events that may be related to one another via influence. The network of events forms a partially ordered set which, when quantified consistently via a technique called chain projection ...
Newshaw Bahreyni   +2 more
doaj   +1 more source

Sombor topological indices for different nanostructures

open access: yesHeliyon, 2023
Euclidean geometry is utilized to establish the Sombor graph parameter and its invariants. It is sum of all adjacent vertices in graph theory dϒ2+dΓ2 where dϒ is the degree of the vertex ϒ.
Muhammad Imran   +4 more
doaj   +1 more source

From Free Fields to AdS -- Thermal Case

open access: yes, 2005
We analyze the reorganization of free field theory correlators to closed string amplitudes investigated in hep-th/0308184 hep-th/0402063 hep-th/0409233 hep-th/0504229 in the case of Euclidean thermal field theory and study how the dual bulk geometry is ...
C. Itzykson   +12 more
core   +5 more sources

Multimodal Data‐Driven Microstructure Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang   +4 more
wiley   +1 more source

Predicting Atomic Charges in MOFs by Topological Charge Equilibration

open access: yesAdvanced Functional Materials, EarlyView.
An atomic charge prediction method is presented that is able to accurately reproduce ab‐initio‐derived reference charges for a large number of metal–organic frameworks. Based on a topological charge equilibration scheme, static charges that fulfill overall neutrality are quickly generated.
Babak Farhadi Jahromi   +2 more
wiley   +1 more source

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