Results 21 to 30 of about 1,012,550 (289)

Some addition to the development of mathematical support for transport navigation [PDF]

open access: yesE3S Web of Conferences, 2022
Formed in the 1960s, the classical methods of guaranteeing estimation are applied to provide navigation for various modes of transport. Many works of both foreign and domestic authors are devoted to the application of this method.
Ovchintsev Mikhail
doaj   +1 more source

A note on affinely regular polygons [PDF]

open access: yesEuropean Journal of Combinatorics, 2009
The affinely regular polygons in certain planar sets are characterized. It is also shown that the obtained results apply to cyclotomic model sets and, additionally, have consequences in the discrete tomography of these sets.
openaire   +3 more sources

Regular Polygonal Partitions of a Tverberg Type [PDF]

open access: yesDiscrete & Computational Geometry, 2021
A seminal theorem of Tverberg states that any set of $T(r,d)=(r-1)(d+1)+1$ points in $\mathbb{R}^d$ can be partitioned into $r$ subsets whose convex hulls have non-empty $r$-fold intersection. Almost any collection of fewer points in $\mathbb{R}^d$ cannot be so divided, and in these cases we ask if the set can nonetheless be $P(r,d)$--partitioned, i.e.,
Leah Leiner, Steven Simon
openaire   +3 more sources

Questions about the non-constructable polygon of Leon Battista Alberti

open access: yesEGA, 2018
The process followed by Alberti when designing the façade of the Santa Maria Novella in Florence is well-known. This façade contains 48 ornamental elements which were created through the construction of regular polygons: 7 elements have a pentagonal base,
Albert Samper Sosa
doaj   +1 more source

Polygon-generation process.

open access: yes, 2020
(a) Random point distribution, (b) polygon initialization, (c) result of one iteration, (d) result of two iterations, (e) result of three iterations, and (f) final polygon.
Hongyun Zhang (419746)   +2 more
core   +1 more source

METHODS FOR CONSTRUCTION OF ODD NUMBER POINTED POLYGONS

open access: yesJournal of Industrial Design and Engineering Graphics, 2016
The purpose of this paper is to present methods for constructing of polygons with an odd number of sides, although some of them may not be built only with compass and straightedge.
Daniel Dobre
doaj   +4 more sources

Mechanism and control of parallel link actuator using multiple air jets (Experimental case study with 3 air jets nozzles and 3 spheres)

open access: yesNihon Kikai Gakkai ronbunshu, 2021
We propose the mechanism and control method of the air jet based parallel link actuator with 6 degrees of freedom. The rotor of the actuator is called a platform which is constructed by connecting multiple spheres that are located in vertex of a regular ...
Keiyu IWAYA   +6 more
doaj   +1 more source

A comprehensive and robust procedure for obtaining the nofit polygon using Minkowski sums

open access: yes, 2005
The nofit polygon is a powerful and effective tool for handling the geometric requirements of solution approaches to irregular cutting and packing problems. Although the concept was first described in 1966, it was not until the early 90s that the general
Song, Xiang, Bennell, Julia A.
core   +2 more sources

Vector Mapping Method for Buildings in Remote Sensing Images Based on Joint Semantic-Geometric Learning

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
An important high-precision building vector mapping method automatically delineates building polygons from high-resolution remote sensing images. Deep learning methods have greatly improved the accuracy of automatic building segmentation in remote ...
Jichong Yin, Fang Wu, Yuyang Qi
doaj   +1 more source

Double pyramidal central configurations of Newtonian (N+2)-body problem

open access: yesResults in Physics
For double pyramidal central configurations of the Newtonian (N+2)-body problem where N point particles are positioned at the vertices of a regular N-polygon, and the (N+1)-th and (N+2)-th point-particles are positioned the opposite sides of the plane ...
Liang Ding, Jinrong Wang, Jinlong Wei
doaj   +1 more source

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