Results 71 to 80 of about 4,241 (179)

Conformally symmetric circle packings. A generalization of Doyle spirals [PDF]

open access: yesarXiv, 2000
From the geometric study of the elementary cell of hexagonal circle packings --- a flower of 7 circles --- the class of conformally symmetric circle packings is defined. Up to Moebius transformations, this class is a three parameter family, that contains the famous Doyle spirals as a special case. The solutions are given explicitly.
arxiv  

Digital topology java applet [PDF]

open access: green, 2008
Carmen Escribano   +3 more
openalex   +2 more sources

OnTheFly2.0: a text-mining web application for automated biomedical entity recognition, document annotation, network and functional enrichment analysis. [PDF]

open access: yesNAR Genom Bioinform, 2021
Baltoumas FA   +10 more
europepmc   +2 more sources

Discrete Hashimoto surfaces and a doubly discrete smokering flow [PDF]

open access: yesarXiv, 2000
B\"acklund transformations for smooth and ``space discrete'' Hashimoto surfaces are discussed and a geometric interpretation is given. It is shown that the complex curvature of a discrete space curve evolves with the discrete nonlinear Schr\"odinger equation (NLSE) of Ablowitz and Ladik, when the curve evolves with the Hashimoto or smoke ring flow. A
arxiv  

What do quantum particles do, being under potential barrier? Tunnelling time. A Virtual Experiment Standpoint [PDF]

open access: yesarXiv, 2006
Addressed, mainly: postgraduates and related readers. Subject: Given two classical mechanical 1D-moving particles (material points), with identical initial data, one of those particles given free and another given to pass through a symmetrical force-barrier, a retardation effect is observed: After the barrier has been passed over, the second particle ...
arxiv  

Web Based Java Applets For Teaching Engineering Mechanics [PDF]

open access: bronze, 2020
Yong Yook Kim   +2 more
openalex   +1 more source

Una experiencia de laboratorio virtual para la asignatura de Teoría de la Comunicación

open access: yesRED. Revista de Educación a Distancia, 2007
El presente artículo describe una experiencia de aplicación de la TI (Tecnología de la Información) al proceso de aprendizaje vinculado a la asignatura de Teoría de la Comunicación. El principal objetivo era crear módulos didácticos que permitieran al
J. P. de Castro Fernández   +4 more
doaj  

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