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For a linear code over GF(q) we consider two kinds of “subcodes” called residuals and punctures. When does the collection of residuals or punctures determine the isomorphism class of the code? We call such a code residually or puncture reconstructible. We investigate these notions of reconstruction and show that, for instance, selfdual binary codes are puncture and residually reconstructible. A result akin to the edge reconstruction of graphs with sufficiently many edges shows that a code whose dimension is small in relation to its length is puncture reconstructible. © 1998 John Wiley & Sons, Inc. J Combin Designs 6: 285–291, 1998 相似文献
124.
Numerical calculations of a ground state and the rigidity have been made for samples of 50 × 50 Ising spins interacting via ± J bonds on a square lattice using Edmond's algorithm, a method well established in optimization theory. For some value of the concentration (0.1<x<0.2) of antiferromagnetic bonds (-J), an ordered (rigid) state occurs with zero magnetization due to magnetic wall separating domains of opposite spins. This new phase, here named a random antiphase state, could be an intermediate phase between ferromagnetism and paramagnetism. 相似文献
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The superfluid fraction ?s/? in He II has been accurately measured at more than 400 points throughout the P-T plane above 1.2 K and is found to be a universal function of the reduced temperature T/Tλ(P). 相似文献
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Hoffmann D. H. H. Weyrich K. Wahl H. Peter Th. Meyer-ter-Vehn J. Jacoby J. Bimbot R. Gardès D. Rivet M. F. Dumail M. Fleurier C. Sanba A. Deutsch C. Maynard G. Noll R. Haas R. Arnold R. Maurmann S. 《Zeitschrift für Physik A Hadrons and Nuclei》1988,330(3):339-340
Zeitschrift für Physik A Hadrons and nuclei - Enhanced energy loss of 333 MeV 238Uions in a hydrogen discharge plasma with a high degree of ionization has been observed. The ion stopping in a... 相似文献
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R. Chapman J.R. Leslie M. Maynard P. Skensved D. Ward J.F. Sharpey-Schafer 《Nuclear Physics A》1983,397(2):296-312
162 MeV 40Ca ions have been used to Coulomb excite the ground-state band of 159Tb up to spin . Lifetimes for levels up to spin have been determined with DSA and recoil distance methods. Multipole mixing ratios for several cascade transitions were extracted from an analysis of γ-ray angular correlation data. Reduced transition probabilities thus deduced in a model-independent way were found to be in agreement with the rotational model with Q0 = 7.41 ± 0.06 e · b and gK?gR = 1.377 ± 0.010. 相似文献
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Bontempo D Li RC Ly T Brubaker CE Maynard HD 《Chemical communications (Cambridge, England)》2005,(37):4702-4704
Low polydispersity poly(N-isopropylacrylamide) with a biotin end-group was obtained in one step from a biotinylated initiator for atom transfer radical polymerization and interacted with streptavidin to generate the thermosensitive polymer-protein conjugate. 相似文献