Results 211 to 220 of about 31,527 (257)

Pyramids in the complex projective plane

Geometriae Dedicata, 1991
For a metric space \(M\) and a natural number \(n\) the function \(\delta: M^ n\to\mathbb{R}\), \(\delta(x_ 1,\dots,x_ n)=\max_{ij}\hbox{dist}_ M(x_ i,x_ j)\) is called the diameter functional. In a previous paper the author constructed a suitable right inscribed pyramid on a \((2k+1)\)- gon whose set of vertices \(P_ k\) is a local minimum of \(\delta\
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Panoramic image mosaics via complex wavelet pyramid

SMC'98 Conference Proceedings. 1998 IEEE International Conference on Systems, Man, and Cybernetics (Cat. No.98CH36218), 2002
Image mosaics is one of the scene encoding approaches and is a very active research area in computer vision community and computer graphics community. This paper presents a robust panoramic image mosaicing scheme which employs complex wavelet pyramid and the human visual perceptive thresholding techniques.
Paul Bao, Dan Xu 0001
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Analysis of complex bursting in cortical pyramidal neuron models

Neurocomputing, 2000
Abstract Burst firing is a prominent feature of cortical pyramidal cells and is thought to have significant functional roles in reliable signaling and synaptic plasticity. Modeling studies have successfully elucidated possible biophysical mechanisms underlying complex bursting in pyramidal cells. Based on these results (Pinsky, Rinzel, J.
Ádám Kepecs, Xiaojing Wang
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Self-Assembly of Pyramidal Tetrapalladium Complexes with a Halide at the Apex

Angewandte Chemie International Edition, 2001
Halide ions act as the template for the self-assembly of tetrapalladium macrocyclic pyramidal structures. These undergo easy inversion in which the halide ion apparently jumps across the macrocycle.
Camino, Bartolomé, Raquel, de Blas, Pablo, Espinet, José M, Martín-Álvarez, Fernando, Villafañe   +4 more
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Network Complexity Pyramid with five levels

International Journal of Systems, Control and Communications, 2009
A network complexity pyramid with five levels is suggest and summarised. From the top level-5 to the bottom level-1 complexity and diversity are increasing but universality and simplicity are decreasing. They can be described in an unification form by four hybrid ratios.
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Platinum Complexes of Phospholes with Reduced Pyramidal Character

Phosphorus, Sulfur, and Silicon and the Related Elements, 1999
Abstract The synthesis of planarizcd phospholes showing considerable elcctron delocabtion haw been described.1–3 We now rcport our findings on their complex forming ability with platinum.
László Kollár, Zsolt Csók, György Keglevich   +2 more
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Light pyramid, shadow pyramid: Hispanic Baroque and radical complexity

2022
The awareness that a sublunary world exists and, at the same time, that there is a divine principle in that same world, brings to the Spanish baroque system (and its various cohorts of legitimizers) into a modernity that becomes that of an epoch of radical complexity. The metaphor of the pyramids, which can be traced back to Nicholas of Cusa, expresses
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Planar and pyramidal conformers of the alkali–ethylene complexes

Chemical Physics Letters, 2010
Abstract Two geometric forms of the ethylene complex with an alkali atom are studied by ab initio methods. The lowest bound state of LiC 2 H 4 belongs to the B 2 point-group symmetry in the pyramidal conformer lying 0.20 eV higher than the dissociation asymptote into the ground state, while it is A 2 in the planar conformer lying 0.20 eV higher ...
Denis Hagebaum-Reignier, Vincent Ledentu, Gwang-Hi Jeung   +2 more
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One Kind of Network Complexity Pyramid with Universality and Diversity

2009
It is based on well-known network models Euler graph, Erdos and Renyi random graph, Watts-Strogatz small-world model and Barabasi-Albert scale-free networks, and combined the unified hybrid network theoretical frame. One kind of network complexity pyramid with universality and diversity is constructed, described and reviewed.
Jin-Qing Fang, Yong Li
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Seismic migration using the complex shiftable pyramid

69th EAGE Conference and Exhibition - Workshop Package, 2007
Seismic migration using the complex shiftable Pyramid Truong Nguyen (Ecole des Mines de Paris) and Herve Chauris (Ecole des Mines de Paris) SUMMARY____________________________________________________________ We consider how the 2-D seismic Kirchhoff migration scheme can benefit from a recently introduced shiftable directional pyramid.
T. Nguyen, H. Chauris
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