Results 61 to 70 of about 236,638 (182)
Incircular nets and confocal conics
, 2017 We consider congruences of straight lines in a plane with the combinatorics of the square grid, with all elementary quadrilaterals possessing an incircle. It is shown that all the vertices of such nets (we call them incircular or IC-nets) lie on confocal
Akopyan, Arseniy, Bobenko, Alexander I.
core +1 more source
Nanoscale Research Letters, 2020 An ultrathin and flexible metamaterial absorber (MA) with triple absorption peaks is presented in this paper. The proposed absorber has been designed in such a way that three absorption peaks are located at 8.5, 13.5, and 17 GHz (X and Ku bands) with ...
Guangsheng Deng +7 more
doaj +1 more source
The flecnode polynomial: a central object in incidence geometry [PDF]
, 2014 We give a brief exposition of the proof of the Cayley-Salmon theorem and its recent role in incidence geometry. Even when we don't use the properties of ruled surfaces explicitly, the regime in which we have interesting results in point-line incidence ...
Katz, Nets Hawk
core +1 more source
Extended F_4-buildings and the Baby Monster
, 2000 The Baby Monster group B acts naturally on a geometry E(B) with diagram c.F_4(t) for t=4 and the action of B on E(B) is flag-transitive. It possesses the following properties: (a) any two elements of type 1 are incident to at most one common element ...
Ivanov, A. A. +2 more
core +1 more source
Numerical Simulation of Radar Signal Reflected by Sea Surface with Different Sea Ice Concentration
Russian Journal of Earth SciencesCurrently, methods of radar remote sensing at small incidence angles (from the vertical to 15∘) are actively developed. An important application of these methods is the determination of the presence and sea ice concentration.
Titchenko Yuriy +5 more
doaj +1 more source
Chirality in incidence geometry
, 2014 This paper has been withdrawn after major changes in it and a change of title. The new version is entitled "Highly symmetric hypertopes"
Fernandes, Maria Elisa +2 more
openaire +2 more sources
Geometric Quality Analysis of Terrestrial Laser Scanning Data for Industrial Usage
International Islamic University Malaysia Engineering JournalTerrestrial laser scanning is a potential emerging technology increasingly used in several applications, including reverse engineering, digital reconstruction, deformation monitoring, forensic crime scene preservation, and construction (AEC ...
Ali Salah J. Al-Saedi +2 more
doaj +1 more source
Scientific Reports, 2017 In this paper, a wide incidence angle-insensitive metamaterial absorber is proposed using eight-circular-sector (ECS). Under normal incidence, the proposed absorber shows high absorptivity at different polarizations due to its symmetric geometry.
Toan Trung Nguyen, Sungjoon Lim
doaj +1 more source
Depth resolved grazing incidence scattering from the solid-liquid interface
, 2013 We have applied small angle scattering in grazing incidence beam geometry on a time-of-flight neutron instrument. Due to the broad wavelength distribution provided for a specific incident beam angle the penetration depth of the neutron beam is varied ...
A. J. C. Dennison +6 more
core +1 more source
Long-Term Performance of Mega-Nourishments: Role of Directional Wave Climate and Initial Geometry
Journal of Marine Science and Engineering, 2020 Concentrated mega-nourishments, built as coastal protection measures for decadal time scales, are intended to diffuse, that is to erode and to supply sand to the nearby beaches and dunes by profiting of the natural drivers.
Jaime Arriaga +4 more
doaj +1 more source