Results 11 to 20 of about 7,201 (251)

POS-SUPPORTED AUTOMATIC DIGITAL SURFACE MODEL (DSM) GENERATION [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
A novel method of POS supported dense matching is introduced for automatically generating DSM. The image pre-processing includes adaptive smooth filter and Wallis filter.
H. Hongyan, Z. Nan, Y. Chunyu
doaj   +1 more source

THE REAL GEOMETRY OF THE EGYPTIAN PYRAMIDS [PDF]

open access: yes, 2021
An analytical Geometrical calculation of the Pyramids of Giza using the ultimate applications such as Auto Cad and Google Earth base maps. The correlation with the Orion Constellation is not mathematically correct.
openaire   +1 more source

Combinatorial Pyramids and Discrete Geometry for Energy-Minimizing Segmentation [PDF]

open access: yes, 2006
This paper defines the basis of a new hierarchical framework for segmentation algorithms based on energy minimization schemes. This new framework is based on two formal tools. First, a combinatorial pyramid encode efficiently a hierarchy of partitions. Secondly, discrete geometric estimators measure precisely some important geometric parameters of the ...
Martin Braure de Calignon   +2 more
openaire   +2 more sources

Bromidotetrakis(2-isopropyl-1H-imidazole-κN3)copper(II) bromide

open access: yesActa Crystallographica Section E, 2011
The CuII atom in the title salt, [CuBr(C6H10N2)4]Br, is coordinated in a square-pyramidal geometry by four imidazole N atoms and one bromide anion that is located at the apex of the pyramid.
Anna Dołęga   +3 more
doaj   +1 more source

Self-Adaptive Grinding for Blind Tip Reconstruction of AFM Diamond Probe

open access: yesNanotechnology and Precision Engineering, 2018
: Blind tip reconstruction (BTR) method is one of the favorable methods to estimate the atomic force microscopy (AFM) probe shape. The exact shape of the characterizer is not required for BTR, while the geometry of the sample may affect the ...
Linyan Xu   +3 more
doaj   +1 more source

Di-μ-chlorido-bis{[N,N′-dicyclohexyl-N′′,N′′-bis(trimethylsilyl)guanidinato-κ2N,N′](tetrahydrofuran-κO)magnesium(II)}

open access: yesActa Crystallographica Section E, 2011
The dinuclear title complex, [Mg2(C19H40N3Si2)2Cl2(C4H8O)2], lies on a center of inversion. The Mg2+ ions are bonded to a chelating N,N′-bonded guanidinate anion, a tetrahydrofuran molecule and two bridging chloride anions.
Jie Cheng
doaj   +1 more source

(μ-1,2-Di-4-pyridylethylene-κ2N:N′)bis[bis(N,N-dimethyldithiocarbamato-κ2S,S′)zinc(II)]

open access: yesActa Crystallographica Section E, 2009
The dinuclear title compound, [Zn2(C3H6NS2)4(C12H10N2)], features two five-coordinate Zn atoms, one with an NS4 coordination geometry distorted towards a trigonal-bipyramidal arrangement, and the other distorted towards a square pyramid.
Pavel Poplaukhin, Edward R. T. Tiekink
doaj   +1 more source

Study of Virtual Reality Immersive Technology Enhanced Mathematics Geometry Learning

open access: yesFrontiers in Psychology, 2022
Mathematics is an important foundation for the development of science education. In the past, when instructors taught mathematical concepts of geometry shapes, they usually used traditional textbooks and aids to conduct teaching activities, which ...
Yu-Sheng Su   +2 more
doaj   +1 more source

(μ-trans-1,2-Di-4-pyridylethylene-κ2N:N′)bis[bis(N,N-diisopropyldithiocarbamato-κ2S,S′)zinc(II)]

open access: yesActa Crystallographica Section E, 2009
The dinuclear title compound, [Zn2(C7H14NS2)4(C12H10N2)], is centrosymmetric about the central C=C bond. The five-coordinate Zn atom is bonded to two asymmetrically chelating dithiocarbamate ligands and a pyridine N atom to define an NS4 coordination ...
Hadi D. Arman   +2 more
doaj   +1 more source

Investigation of geometry-induced heat and mass transfer mechanisms in square, pentagonal, and hexagonal pyramid solar stills

open access: yesEnergy Conversion and Management: X
Pyramid solar stills have gained attention for their larger condensation area and improved solar exposure, yet the influence of geometry on internal heat and mass transfer mechanisms remains insufficiently understood.
Kapil T. Patil   +5 more
doaj   +1 more source

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