Results 1 to 10 of about 1,095,170 (169)

Random Rectangular Graphs [PDF]

open access: yesPhysical Review E, 2015
A generalization of the random geometric graph (RGG) model is proposed by considering a set of points uniformly and independently distributed on a rectangle of unit area instead of on a unit square [0,1]^2.
Estrada, Ernesto, Sheerin, Matthew
core   +6 more sources

Rectangular R-transform as the limit of rectangular spherical integrals [PDF]

open access: yesJournal of Theoretical Probability, 2011
In this paper, we connect rectangular free probability theory and spherical integrals. In this way, we prove the analogue, for rectangular or square non-Hermitian matrices, of a result that Guionnet and Maida proved for Hermitian matrices in 2005.
Benaych-Georges, Florent
core   +5 more sources

Rectangular Well as Perturbation [PDF]

open access: yesJournal of Mathematical Physics, 1997
We discuss a finite rectangular well as a perturbation for the infinite one with a depth $\lambda^2$ of the former as a perturbation parameter. In particular we consider a behaviour of energy levels in the well as functions of complex $\lambda$.
Giller S.   +3 more
core   +5 more sources

Multi-Objective Optimization of Different Channel Shapes in Heat Exchangers [PDF]

open access: yesJournal of Chemical and Petroleum Engineering, 2021
The effect of geometric parameters of the zigzag, rectangular, and serpentine channels on convective heat transfer coefficient and pressure drop was investigated using computational fluid dynamics (CFD). In all channels, the same boundary conditions were
Saeid Salimi, Reza Beigzadeh
doaj   +3 more sources

Evaluation of the Residence Time Distribution (RTD) for Flow in Ducts with Velocity Profile of Two Independent Variables [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2022
The correct information on RTD can help in system design and evaluation. The RTD corresponding to the velocity profile is known only for certain cases, where the velocity profile depends on one coordinate only.
Majid Emami Meibodi
doaj   +1 more source

Students' Mathematical Understanding of Online Learning: Evaluation of Triangular and Rectangular Materials

open access: yesJTAM (Jurnal Teori dan Aplikasi Matematika), 2022
The purpose of this research is to find out a comprehensive picture of students' mathematical understanding in the online learning process, especially in the triangle and quadrilateral material. The study was conducted on 20 students in MTs.
Farah Heniati Santosa   +4 more
doaj   +1 more source

Behaviour of Square and Rectangular Tunnels Using an Improved Finite Element Method

open access: yesApplied Sciences, 2022
Due to its advantages (fast and accurate calculations), the Hyperstatic Reaction Method (HRM) was used to calculate the internal forces of circular tunnel linings in former works.
Chi Thanh Nguyen   +4 more
doaj   +1 more source

Rectangular learning through video, is it effective during the Covid-19 pandemic?

open access: yesJournal of Science and Education, 2021
The Covid-19 pandemic is a challenge for teachers and students in the learning process, especially to implement technology-based learning. Learning mathematics with the characteristics of abstract objects makes teachers have to innovate in the knowledge ...
Lisa Fitriana   +3 more
doaj   +1 more source

The Performance of Clay-based Biomass Briquette Stove with Three Geometry Shape Variations

open access: yesProtek: Jurnal Ilmiah Teknik Elektro, 2023
Biomass briquette stove is a cooking tool that is still widely used by the people of the interior of South Sulawesi. Even in urban areas, it is not uncommon to find their use because of the ease of obtaining briquettes and its relatively good efficiency.
Sallolo Suluh   +5 more
doaj   +1 more source

A Comparative Analysis of Force Deflection Property of Nickel-Titanium Wires of Four Manufacturers using Five Point Bending Test: An In-Vitro Study [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2021
Introduction: Over the last century, material science has made rapid progress. In orthodontics, not only the materials improved, but also the philosophies have changed. Orthodontic wires, which generate biomechanical forces through brackets for tooth
Georgy John   +2 more
doaj   +1 more source

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