Results 241 to 250 of about 210,419 (270)
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A low complexity overcomplete directional image pyramid
Proceedings 2003 International Conference on Image Processing (Cat. No.03CH37429), 2004An undecimated directional filter bank (UDFB) derived from the DFB originally proposed by Bamberger and Smith is proposed. The new UDFB has excellent orientation selectivity, and maintains the low computational complexity from its predecessor. While over complete, the UDFB presents other properties like shift invariance, desirable for some image ...
J.G. Rosiles, M.J.T. Smith
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Network Complexity Pyramid with five levels
International Journal of Systems, Control and Communications, 2009A 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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Pyramids in the complex projective plane
Geometriae Dedicata, 1991For 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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Trigonal‐Pyramidal Tetra‐Sandwich Complexes as 3D NLOphores
European Journal of Inorganic Chemistry, 2008AbstractThe Negishi cross‐coupling reaction of 1,3,5‐trihalobenzene with ferrocenyl‐ and ruthenocenyllithium, yields the corresponding 1,3,5‐trimetallocenylated benzene derivatives in good yield, when 1,3,5‐triiodobenzene is used. In a subsequent stacking reaction with the cationic (η5‐cyclopentadienyl)ruthenium(II) and (η5‐pentamethylcyclopentadienyl ...
Stefan Steffens +4 more
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Low computational complexity hardware implementation of Laplacian Pyramid
2010 18th Iranian Conference on Electrical Engineering, 2010In this paper a new implementation of the Laplacian Pyramid (LP) algorithm is proposed which uses the polyphase representation and noble identities to facilitate a new pipeline architecture. Our approach saves a large number of mathematical operations which results in the reduction of power consumption.
Seyed Mohammad Ali Zeinolabedin +2 more
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Light pyramid, shadow pyramid: Hispanic Baroque and radical complexity
2022The 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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Platinum Complexes of Phospholes with Reduced Pyramidal Character
Phosphorus, Sulfur, and Silicon and the Related Elements, 1999Abstract 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 +2 more
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Metal-Assisted Pyramidal Inversion in Metal-Phosphido Complexes
Inorganic Chemistry, 1994The first systematic theoretical treatment of metal-assisted pyramidal inversion in metal-phosphido complexes is presented. We find that two effects dominate inversion barrier trends. The first effect, which is most important in early transition metal complexes, involves stabilization of the planar form through ligand-to-metal π bonding.
Jimmy R. Rogers +2 more
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A Nickel Complex Containing a Pyramidalized, Ambiphilic Pincer Germylene Ligand
Chemistry – A European Journal, 2019AbstractReaction of N‐heterocyclic carbene (NHC)‐stabilized PGeP‐type germylene Ge{o‐(PiPr2)C6H4}2⋅MeIiPr (1) (MeIiPr=1,3‐diisopropyl‐4,5‐dimethylimidazol‐2‐ylidene) with Ni(cod)2 gave pincer germylene complex Ni[Ge{o‐(PiPr2)C6H4}2](MeIiPr) (2), in which the Ge center of 2 is significantly pyramidalized.
Takahito Watanabe +2 more
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Complex radiation patterns of dual mode pyramidal horns
IEEE Transactions on Antennas and Propagation, 1977The radiation patterns of the dual mode horn and its related performance are influenced by the phase difference between component modes at the horn aperture and the phase distribution associated with the horn flare angle. Both effects are shown to deteriorate beam symmetry and increase sidelobe levels.
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