Results 11 to 20 of about 3,827,605 (292)
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
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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
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Steganograhy in Images by Using Intersecting Planes [PDF]
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
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Optimization of starshades: focal plane versus pupil plane [PDF]
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
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METHODS TO DEVELOP A TOROIDAL SURFACE
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
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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.
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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
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A Focal-Plane Image Processor for Low Power Adaptive Capture and Analysis of the Visual Stimulus [PDF]
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
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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
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Compositionally universal entire functions on the plane and the punctured plane [PDF]
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
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