Results 41 to 50 of about 1,212,069 (375)
Questions about the non-constructable polygon of Leon Battista Alberti
EGA, 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
Buckling of Tapered Columns with Polygon Cross-Section [PDF]
Computational Engineering and Physical Modeling, 2018 This paper is concerned with the elastic stability of slender tapered columns of regular polygon cross-section with constant volume is presented. Various end conditions of the tapered columns such as pinned ends, clamped -pinned ends and clamped ends are
Magdy Salama
doaj +1 more source
Nihon 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 PROBLEM IN REGULAR POLYGONS [PDF]
School Science and Mathematics, 1918 n ...
openaire +2 more sources
Equivariant Semidefinite Lifts of Regular Polygons [PDF]
Mathematics of Operations Research, 2017 Given a polytope P ⊂ ℝn, we say that P has a positive semidefinite lift (psd lift) of size d if one can express P as the projection of an affine slice of the d × d positive semidefinite cone. Such a representation allows us to solve linear optimization problems over P using a semidefinite program of size d and can be useful in practice when d is much ...
Fawzi, Hamza +2 more
openaire +7 more sources
IEEE 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
The Perceived Beauty of Regular Polygon Tessellations
Symmetry, 2019 Beauty judgments for regular polygon tessellations were examined in two experiments. In experiment 1 we tested the three regular and eight semi-regular tilings characterized by a single vertex.
J. Friedenberg
semanticscholar +1 more source
A note on affinely regular polygons [PDF]
European 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
Kink-free deformations of polygons [PDF]
, 1989 We consider a discrete version of the Whitney-Graustein theorem concerning regular equivalence of closed curves. Two regular polygons P and P’, i.e. polygons without overlapping adjacent edges, are called regularly equivalent if there is a continuous one-
Vegter, Gert
core +2 more sources
Pigmentary keratitis and mixed chromatophoroma in a betta fish (Betta splendens)
Aquaculture, Fish and Fisheries, Volume 2, Issue 6, Page 587-592, December 2022., 2022 Graphical Abstract This clinical case report describes a <1 year old betta fish that developed pigmentary keratitis, anterior uveitis, and a mixed chromatophoroma that led to the patient's death. A review of available anecdotal and scientific literature suggests that there may have been a genetic cause for these health problems.
Alicia McLaughlin +3 more
wiley +1 more source