Results 11 to 20 of about 385,673 (291)

Graphoidal graphs and graphoidal digraphs: a generalization of line graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
A graphoidal cover of a graph G is a collection ψ of paths (not necessarily open) in G such that each path in ψ has at least two vertices, every vertex of G is an internal vertex of at most one path in ψ, and every edge of G is in exactly one path in Let
S. Arumugam, Jay S. Bagga
doaj   +1 more source

What mathematics knowledge for teaching is used by a Grade 2 teacher when teaching counting

open access: yesSouth African Journal of Childhood Education, 2019
Background: The study on which this article is based investigated the Mathematics Knowledge for Teaching (MKfT) that a well experienced Grade 2 teacher utilized when teaching counting. Aim: In this paper we share excerpts from one of the lessons of this
Samukeliso Chikiwa   +2 more
doaj   +1 more source

On the rise and fall of a ball with linear or quadratic drag [PDF]

open access: yes, 1999
We review the problem of a vertically thrown ball, with a drag force which is either linear or quadratic in the speed. It is stressed from the outset that these two types of drag correspond to specific ranges of the Reynolds number ...
Timmerman, Peter   +1 more
core   +2 more sources

Differences in body composition, static balance, field test performance, and academic achievement in 10–12-year-old soccer players

open access: yesFrontiers in Physiology, 2023
Introduction: This study aimed to compare 10–12-year-old Qatari male soccer players (n = 45) regarding different dimensions (anthropometric, academic and physical performance).Methods: Anthropometric parameters (body mass, fat percentage (%BF), body mass
Souhail Hermassi   +3 more
doaj   +1 more source

Relationship between fatness, physical fitness, and academic performance in normal weight and overweight schoolchild handball players in Qatar State.

open access: yesPLoS ONE, 2021
The aim of this study was to examine the correlation between physiological parameters (namely fatness and physical fitness) with academic performance (namely mathematics and science grade point average [GPA]) in normal weight and overweight schoolchild ...
Souhail Hermassi   +5 more
doaj   +1 more source

Basic Geometric Concepts in the Thinking of In-Service and Pre-Service Mathematics Teachers

open access: yesEducation Sciences, 2021
This paper discusses a model of a mathematics teacher professional development implemented in Italy and Hungary with in-service and pre-service mathematics teachers.
Alessandro Gambini, István Lénárt
doaj   +1 more source

On Cauchy–Liouville-type theorems

open access: yesAdvances in Nonlinear Analysis, 2017
In this paper we explore Liouville-type theorems to solutions of PDEs involving the ϕ-Laplace operator in the setting of Orlicz–Sobolev spaces. Our results extend Liouville-type theorems that have been obtained recently.
Araya Ataklti, Mohammed Ahmed
doaj   +1 more source

Differences in Fitness and Academic Attainment between Obese, and Non Obese School-Age Adolescent Handball Players: An Explorative, Cross-Sectional Study

open access: yesApplied Sciences, 2021
This study investigated differences in physical fitness and academic attainment in obese and non-obese adolescent handball players. A total of 31 males (age: 15.5 ± 1.2 years; body mass: 77.8 ± 17.7 kg; height: 1.71 ± 0.10 m; body mass index (BMI): 26.8 ±
Souhail Hermassi   +2 more
doaj   +1 more source

Tracking Table Tennis Balls in Real Match Scenes for Umpiring Applications [PDF]

open access: yes, 2011
Judging the legitimacy of table tennis services presents many challenges where technology can be judiciously applied to enhance decision-making. This paper presents a purpose-built system to automatically detect and track the ball during table-tennis ...
Dooley, Laurence, Wong, Patrick
core   +1 more source

Scalability of Frames Generated by Dynamical Operators

open access: yesFrontiers in Applied Mathematics and Statistics, 2017
Let ℍ be a separable Hilbert space, let G ⊂ ℍ, and let A be an operator on ℍ. Under appropriate conditions on A and G, it is known that the set of iterations FG(A)={Ajg|g∈G,0≤j≤L(g)} is a frame for ℍ.
Roza Aceska, Yeon H. Kim
doaj   +1 more source

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