منابع مشابه
Wavelength Division vs. Code Division Access Methods for Optical Networks
This paper examines two methods of multiple access for optical networks: code-division and wavelength division. Two approaches are given for analyzing code-division systems, and an overview of a proposal for a WDM network will be summarized. Since the maturity of the technologies necessary for such systems diier, the usefulness of a direct comparison between CDMA and WDM is limited; instead, th...
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As is well known (and seen in a previous post), compilers optimize unsigned division by constants into multiplication by a "magic number." But not all constants are created equal, and approximately 30% of divisors require magic numbers that are one bit too large, which necessitates special handling (read: are slower). Of these 30%, slightly less than half (46%) are even, which can be handled at...
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Recent work applying higher gauge theory to the superstring has indicated the presence of ‘higher symmetry’. Infinitesimally, this is realized by a ‘Lie 2-superalgebra’ extending the Poincaré superalgebra in precisely the dimensions where the classical superstring makes sense: 3, 4, 6 and 10. In the previous paper in this series, we constructed this Lie 2-superalgebra using the normed division ...
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Supersymmetry is deeply related to division algebras. For example, nonabelian Yang–Mills fields minimally coupled to massless spinors are supersymmetric if and only if the dimension of spacetime is 3, 4, 6 or 10. The same is true for the Green–Schwarz superstring. In both cases, supersymmetry relies on the vanishing of a certain trilinear expression involving a spinor field. The reason for this...
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Babington, B. G. ; S.B., 1856, 89 ; 1857-8, 73 ; 1858-9, 73 ; O.S., 1859-60, 1; 1860-1, 129 ; 1863-4, 160 ; 1863-4, 168 ; 1863-4, 241 ; 1864-5, 278 Ballard, Edward; O.S., 1875-6, 30; N.S., 1887-8, 183 Barker, T. Herbert ; S.R., 1858, 79 Barraut, A. R. ; O.S., 1867-8, 183 Barrington-Kennett, Y. ; U.S., 1881, (554 Bell, A. N. ; O.S., 1863-4, 225 Berry, F. H. ; N.S., 1899-1900, 117 Bertillon, Jacq...
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ژورنال
عنوان ژورنال: Journal of Chemical Education
سال: 1993
ISSN: 0021-9584,1938-1328
DOI: 10.1021/ed070p782.1