Invariant Cones
Mostrando 1-7 de 7 artigos, teses e dissertações.
-
1. Equações Diferenciais por partes:ciclos limite e cones invaiantes / Piecewise differential equation: limit cycles and invariant cones
Neste trabalho, consideramos classes de sistemas lineares por partes descontínuos no plano e contínuos no espaço. No plano, analisamos sistemas do tipo foco-foco (FF), parabólico-foco (PF) e parabólico-parabólico (PP) separados pela reta x = 0 e demonstramos que podem aparecer até dois ciclos limite, dependendo de variações de parâmetros. Também e
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/03/2011
-
2. Equações Diferenciais por partes:ciclos limite e cones invaiantes / Piecewise differential equation: limit cycles and invariant cones
Neste trabalho, consideramos classes de sistemas lineares por partes descontínuos no plano e contínuos no espaço. No plano, analisamos sistemas do tipo foco-foco (FF), parabólico-foco (PF) e parabólico-parabólico (PP) separados pela reta x = 0 e demonstramos que podem aparecer até dois ciclos limite, dependendo de variações de parâmetros. Também e
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/03/2011
-
3. O(p+1) x O(q+1) Invariant hypersurfaces with zero scalar curvature in Euclidean space Rp+q+2. / Hipersuperfícies em Rp+q+2 de curvatura escalar nula invariantes por O(p+1) x O(q+1).
Esta dissertação está baseada no artigo de Jocelino Sato e Vicente de Souza Neto intitulado Complete and Stable O(p+1) x O(q+1) - Invariant Hypersurfaces with Zero Scalar Curvature in Euclidean Space Rp+q+2, publicado na revista Annals of Global Analysis and Geometry, volume 29, em 2006. O principal resultado desta dissertação é o Teorema de Classicaç
Publicado em: 2009
-
4. Reduction of scattering to an invariant finite displacement in an ambient space-time
The scattering transformation S for a wave equation in Minkowski space M0 is reducible (rigorously in the classical case, necessarily partially heuristically in the nonlinear quantum case) to the action of a distinguished finite transformation ζ in the ambient universal cosmos M. M0 is invariantly imbedded in M, relative to any given point of observation, a
-
5. Visual transduction in cones of the monkey Macaca fascicularis.
1. Visual transduction in macaque cones was studied by measuring the membrane current of single outer segments projecting from small pieces of retina. 2. The response to a brief flash of light was diphasic and resembled the output of a bandpass filter with a peak frequency near 5 Hz. After the initial reduction in dark current there was a rebound increase wh
-
6. Geometric visual hallucinations, Euclidean symmetry and the functional architecture of striate cortex.
This paper is concerned with a striking visual experience: that of seeing geometric visual hallucinations. Hallucinatory images were classified by Klüver into four groups called form constants comprising (i) gratings, lattices, fretworks, filigrees, honeycombs and chequer-boards, (ii) cobwebs, (iii) tunnels, funnels, alleys, cones and vessels, and (iv) spir
-
7. Single-channel measurement from the cyclic GMP-activated conductance of catfish retinal cones.
1. A patch of plasma membrane was excised, in the inside-out configuration, from the outer segment tip of a catfish cone and recorded electrically with a patch pipette. A solution of 118 mM-NaCl was present on both sides of the membrane. 2. With the solution outside the pipette containing a low concentration (typically several micromoles per litre) of cyclic