Results 161 to 170 of about 797,150 (338)

Brief introduction to distributions and to Hörmander spaces Bp,k

open access: yesSelecciones Matemáticas
Partial differential equations (PDE’s) are, we believe, little known in our country, especially at a medium-advanced level, in particular, their historical roots and methods developed in their evolution.
Alejandro Ortiz Fernández
doaj   +1 more source

Rethinking Algebra Teaching in the Light of ‘Orchestration of Signs’ – Exploring the “Equal Sign” in a Norwegian Mathematics Classroom

open access: yes, 2014
Algebra continues to be the focus of reform efforts and research in mathematics education in many countries worldwide (e.g., Kieran, 1992 & 2006; National Council of Teachers of Mathematics (NCTM), 2000; Watson, 2009). There is a general concern (e.g., from policy makers, teachers and Higher Education councils) that students leave compulsory schooling ...
Kirsti Klette   +2 more
openaire   +2 more sources

Topological Line Defect Waveguide

open access: yesAdvanced Optical Materials, EarlyView.
The work unveils the prevalence of topological modes across diverse photonic crystal platforms by experimentally demonstrating topological transport in conventional line‐defect waveguides. Interfacial waveguides are utilized as mode convertors to selectively excite topological states in photonic crystal systems.
Nikhil Navaratna   +2 more
wiley   +1 more source

Enhancing Amplified Spontaneous Emission in Perovskite Thin Films by Thickness Regulation: Insights into Carrier Distribution and Optical Confinement

open access: yesAdvanced Optical Materials, EarlyView.
This study reveals the critical influence of film thickness and excitation wavelength on the ASE threshold in metal halide perovskites. By optimizing these factors, the ASE threshold is significantly reduced, providing key insights into optical confinement and carrier distribution for advancing electrically pumped perovskite lasers.
Yulin Mao   +7 more
wiley   +1 more source

Implementation of Meaningful Instruction Design Model Assisted by Comic on Students Understanding of Multiplication

open access: yesKreano: Jurnal Matematika Kreatif-Inovatif
The meaningfulness of math learning in multiplication material is still lacking. This can be seen from students who do not care when they get low results in multiplication learning and are considered boring for students.
Indria Kusumawati   +2 more
doaj   +1 more source

Analysis of Band Effects in One‐Dimensional Periodic Lattices Using an Enhanced Homogenization Method

open access: yesAdvanced Photonics Research, EarlyView.
An enhanced homogenization method for periodic lattices, applicable to any asymmetrical multipart structures, is proposed. This method simplifies intricate gratings into slab waveguides, predicts guided‐mode resonances and bound states in the continuum, without relying on numerical methods.
Atefe Taheri, Mehrdad Shokooh‐Saremi
wiley   +1 more source

Information dissemination and confusion in signed networks [PDF]

open access: yesarXiv
We introduce a model of information dissemination in signed networks. It is a discrete-time process in which uninformed actors incrementally receive information from their informed neighbors or from the outside. Our goal is to minimize the number of confused actors - that is, the number of actors who receive contradictory information.
arxiv  

Low‐Loss Parowax‐Imprinted Diffractive Neural Network for Orbital Angular Momentum Terahertz Holographic Imaging

open access: yesAdvanced Photonics Research, EarlyView.
This work introduces a low‐loss diffractive neural network, fabricated using an imprinting technique with parowax material, for recognizing and manipulating the topological charge of orbital angular momentum (OAM) waves. It is also demonstrated that the low‐loss diffractive network can perform mathematical operations based on the topological charges of
Wei Jia   +4 more
wiley   +1 more source

Extraction of Inherent Amplitude Mode from a Light Beam

open access: yesAdvanced Photonics Research, EarlyView.
Mode extraction is the inverse process of the double‐beam superposition principle in classical optics. While polarization mode extraction has been successfully demonstrated using an m‐order vector vortex beam, this article demonstrates the amplitude mode extraction of a light beam.
Zhiyang Xia   +6 more
wiley   +1 more source

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