Results 21 to 30 of about 3,366,340 (357)

Finite projective geometries that are incidence structures of caps

open access: bronzeLinear Algebra and its Applications, 1982
AbstractA t-cap in a geometry is a set of t points no three of which are collinear. A quadric in a projective geometry PG(n, q) is a set of points x which satisfy xTQx = 0,Q being an n + 1 by n + 1 matrix over GF(q). We show that in any Desarguesian projective geometry PG(2n, q), q odd, there exists a family of (q + 1)-caps which obey the axioms for ...
Barbu C. Kestenband
openalex   +3 more sources

Parametric investigation of laser incidence geometry in laser-assisted milling of Inconel 718

open access: goldJournal of Materials Research and Technology
While laser-assisted milling machining is promising for promoting the machinability of Inconel 718, the geometrical parameters of laser beam relative to milling tool significantly influence its machining performance.
Chenwei Gao   +3 more
doaj   +2 more sources

Grazing exit versus grazing incidence geometry for x-ray absorption near edge structure analysis of arsenic traces [PDF]

open access: green, 2009
In the presented study the grazing exit x-ray fluorescence was tested for its applicability to x-ray absorption near edge structure analysis of arsenic in droplet samples.
Florian Meirer   +4 more
openalex   +2 more sources

Incidence and pattern of periprosthetic hip fractures around the stem in different stem geometry [PDF]

open access: bronzeInternational Orthopaedics, 2019
Umberto Cottino   +5 more
openalex   +2 more sources

Retinal vascular geometry and 6 year incidence and progression of diabetic retinopathy [PDF]

open access: bronzeDiabetologia, 2017
Carol Y. Cheung   +8 more
openalex   +2 more sources

EFFICIENT SPATIO-TEMPORAL MODELLING TO ENABLE TOPOLOGICAL ANALYSIS [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
Time-dependent analysis scenarios such as heat, wind or flood analysis in cities and in landscapes need a correct and consistent modelling of geometry and topology over time.
M. W. Jahn, P. Kuper, M. Breunig
doaj   +1 more source

Velocity Increment on Incidence Angle near the Leading Edge of the Compressor Cascade

open access: yesAerospace, 2023
The geometry of a compressor leading edge has an important effect on the aerodynamic performance at an off-designed incidence angle. The current geometric design methods of the leading edge are usually developed based on the flow characteristics at the ...
Xiaobin Xu   +3 more
doaj   +1 more source

Quotients of incidence geometries [PDF]

open access: yesDesigns, Codes and Cryptography, 2011
We develop a theory for quotients of geometries and obtain sufficient conditions for the quotient of a geometry to be a geometry. These conditions are compared with earlier work on quotients, in particular by Pasini and Tits. We also explore geometric properties such as connectivity, firmness and transitivity conditions to determine when they are ...
Cara, Philippe   +3 more
openaire   +5 more sources

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