Results 11 to 20 of about 3,827,605 (292)

Omittable Planes [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2011
In analogy to omittable lines in the plane, we initiate the study of omittable planes in $3$-space. Given a collection of $n$ planes in real projective $3$-space, a plane $\Pi$ is said to be omittable if $\Pi$ is free of ordinary lines of intersection – in other words, if all the lines of intersection of $\Pi$ with other planes from the collection come
Grünbaum, Branko, Lenchner, Jonathan
openaire   +2 more sources

Twisted Planes [PDF]

open access: yesCommunications in Algebra, 2010
Let k be a commutative ring. We find and characterize a new family of twisted planes (i. e. associative unitary k-algebra structures on the k-module k[X,Y], having k[X] and and k[Y] as subalgebras).Similar results are obtained for the k-module of two variables power series k[[X,Y]].
Guccione, Jorge Alberto   +2 more
openaire   +3 more sources

Steganograhy in Images by Using Intersecting Planes [PDF]

open access: yesEngineering and Technology Journal, 2011
Steganography is the art of hiding, and transmitting information using apparently innocent carrier without expose any suspicion. In this paper the proposed system is an implementation of image steganography techniques.
Esraa Jaffar Baker
doaj   +1 more source

Optimization of starshades: focal plane versus pupil plane [PDF]

open access: yes, 2014
We search for the best possible transmission for an external occulter coronagraph that is dedicated to the direct observation of terrestrial exoplanets. We show that better observation conditions are obtained when the flux in the focal plane is minimized
Aime, Claude, Flamary, Rémi
core   +5 more sources

METHODS TO DEVELOP A TOROIDAL SURFACE

open access: yesJournal of Industrial Design and Engineering Graphics, 2021
The paper work presents two practical methods to draw the development of a surface unable to be developed applying classical methods of Descriptive Geometry, the toroidal surface, frequently met in technical practice.
Vanda Ligia DANAILA   +1 more
doaj   +2 more sources

Plane Collineations [PDF]

open access: yesEdinburgh Mathematical Notes, 1960
If in a complex projective plane a point P, with coordinate vector x, corresponds to a point p*, with coordinate vector x*, under a non-singular collineation, thenx* = Axwhere A is a non-singular 3×3 matrix, the coordinates and the elements of A being complex numbers.
openaire   +1 more source

K-plane regression [PDF]

open access: yesInformation Sciences, 2015
In this paper, we present a novel algorithm for piecewise linear regression which can learn continuous as well as discontinuous piecewise linear functions. The main idea is to repeatedly partition the data and learn a liner model in in each partition.
Manwani, Naresh, Sastry, PS
openaire   +3 more sources

A Focal-Plane Image Processor for Low Power Adaptive Capture and Analysis of the Visual Stimulus [PDF]

open access: yes, 2007
Portable applications of artificial vision are limited by the fact that conventional processing schemes fail to meet the specifications under a tight power budget.
Carmona Galán, Ricardo   +3 more
core   +1 more source

Experimental Parameter Identification and an Evaluation of the Impact of Tire Models on the Dynamics of Fixed-Wing Unmanned Aerial Vehicles

open access: yesAerospace
Because fixed-wing unmanned aerial vehicles (UAVs) require high-speed taxiing for takeoff and landing, the aircraft’s stability during taxiing is critical.
Hikaru Eguchi, Daisuke Nakata
doaj   +1 more source

Compositionally universal entire functions on the plane and the punctured plane [PDF]

open access: yes, 2012
Necessary/sufficient conditions for a sequence of automorphisms of the complex plane to generate a sequence of composition operators that is universal on the punctured plane are provided.
Bernal González, Luis
core   +1 more source

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