Zobrazeno 1 - 10
of 79
pro vyhledávání: '"T E, Hall"'
Publikováno v:
Advances in Mathematics of Communications. 7:231-242
We present a new construction for two-dimensional, perfect autocorrelation arrays over roots of unity. These perfect arrays are constructed from a block of perfect column sequences. Other blocks are constructed from the first block, to generate a blo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::004edceeef1885cd2688a3de77e9a7a5
https://doi.org/10.3934/amc.2013.7.231
https://doi.org/10.3934/amc.2013.7.231
Autor:
Andrew Tirkel, T. E. Hall
Publikováno v:
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. :2315-2321
Large sets of matrices with good auto and cross-correlation are rare. We present two such constructions, a method of extending family size by column multiplication and a method of extending physical size by interlacing. These matrices can be applied
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ec57f68c4ade53ac486434e8d37f15e
https://doi.org/10.1093/ietfec/e89-a.9.2315
https://doi.org/10.1093/ietfec/e89-a.9.2315
Autor:
T. E. Hall, Kunitaka Shoji
Publikováno v:
Communications in Algebra. 30:911-933
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3543e3e983b9b91c1ddd5a4c8e8d0bd2
https://doi.org/10.1081/agb-120013191
https://doi.org/10.1081/agb-120013191
Autor:
Andrew Z. Tirkel, T. E. Hall
Publikováno v:
IEEE Multimedia. 8:30-37
We address image security issues by proposing a scheme for watermarking images or video at the camera. Each watermark is unique and identifies the owner, camera, and frame number. Application areas include the security industry (for proof of tamperin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2812e1979e03c5365d6775929f08eb4
https://doi.org/10.1109/93.959098
https://doi.org/10.1109/93.959098
Autor:
T. E. Hall, T Imaoka
Publikováno v:
Semigroup Forum. 58:126-141
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82ff40a6997e60699bce8556f96493cc
https://doi.org/10.1007/s002339900001
https://doi.org/10.1007/s002339900001
Autor:
T. E. Hall, Shuhua Zhang
Publikováno v:
International Journal of Algebra and Computation. :363-397
This paper is a continuation of a paper of the same title by the first author and P. Weil. We first characterize the universal class of a radical congruence system. We then introduce the meet and the (limit) iteration of congruence systems. This enab
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10d44080a78cee50a1b40ba0eedd61eb
https://doi.org/10.1142/s0218196798000181
https://doi.org/10.1142/s0218196798000181
Publikováno v:
Signal Processing. 66:373-383
This paper addresses issues concerned with image registration, where the image contains an invisible watermark. We present a selection of registration masks which can be deliberately overlaid on a watermarked or raw image, allowing the recovery of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d768dbd5af1a8382ae22dd89dbf8c42a
https://doi.org/10.1016/s0165-1684(98)00016-4
https://doi.org/10.1016/s0165-1684(98)00016-4
Publikováno v:
International Journal of Algebra and Computation. :433-455
As a step in a study of the lattice ℒ(ℱ) of pseudovarieties of finite semigroups that attempts to take full advantage of the underlying lattice structure, a family of complete congruences is introduced on ℒ(ℱ). Such congruences provide a fram
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::83ac0a869c24ba0e0b7e77e8ff8af20e
https://doi.org/10.1142/s0218196797000198
https://doi.org/10.1142/s0218196797000198
Autor:
T. E. Hall, M. V. Sapir
Publikováno v:
Discrete Mathematics. 161:151-160
If n is the number of nonidempotent elements of a finite semigroup S , it is shown that each sequence of length 2 n of elements of S contains a consecutive subsequence whose product is an idempotent element, and that 2 n is the best possible among al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::701144ac5ee14a1104e3a6038a845ae4
https://doi.org/10.1016/0012-365x(95)00223-j
https://doi.org/10.1016/0012-365x(95)00223-j
Autor:
T. E. Hall, Karl Auinger
Publikováno v:
International Journal of Algebra and Computation. :655-685
On any eventually regular semigroup S, congruences ν, μL, μR, μ, K, KL, KR, ζ are introduced which are the greatest congruences over: nil-extensions (n.e.) of completely simple semigroups, n.e. of left groups, n.e. of right groups, n.e. of group
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12d98f749a60ce4d6f23a4590e18a109
https://doi.org/10.1142/s0218196796000386
https://doi.org/10.1142/s0218196796000386