Results 201 to 210 of about 55,699 (240)
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A Skew Hadamard Matrix of Order 52
Canadian Journal of Mathematics, 19691. A Hadamard (H-) matrix H = (hij) of order n is an n × n square matrix satisfying the conditionsfor all i, j ≦ n. A skew H-matrix is an H-matrix of the formwhere I is the identity matrix and S’ the transpose of 5. In particular,Skew H-matrices have applications in the theory of finite projective planes (2) and tournaments (4), also in the ...
Blatt, D., Szekeres, George
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Hadamard-Transform Fluorescence Excitation-Emission-Matrix Spectroscopy
Analytical Chemistry, 2017We present a fluorescence excitation-emission-matrix spectrometer with superior data acquisition rates over previous instruments. Light from a white light emitting diode (LED) source is dispersed onto a digital micromirror array (DMA) and encoded using binary n-size Walsh functions ("barcodes").
N. L. P. Andrews +8 more
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A Hadamard matrix of order 428
Journal of Combinatorial Designs, 2005Summary: Four Turyn type sequences of lengths 36, 36, 36, 35 are found by a computer search. These sequences give new base sequences of lengths 71, 71, 36, 36 and are used to generate a number of new \(T\)-sequences. The first order of many new Hadamard matrices constructible using these new \(T\)-sequences is 428.
Kharaghani, H., Tayfeh-Rezaie, B.
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A secret sharing scheme from hadamard matrix
2017 IEEE 17th International Conference on Communication Technology (ICCT), 2017In this paper, we propose a secret sharing scheme based on Hadamard matrix and prove its security properties. This secret sharing scheme enjoys both the lower computation complexity and the lower space complexity. This secret sharing scheme can be widely used in many light-weight computation and storage devices, such as smart phones, sensors in ...
Huaixi Wang, Chen Wang, Nina Shu
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New Hadamard matrix of order 24
Graphs and Combinatorics, 1989This paper completes the \textit{N. Ito, J. S. Leon} and \textit{J. Q. Longyear}, ``Classification of 3-(24,12,5) designs and 24-dimensional Hadamard matrices'', J. Comb. Theory, Ser. A 31, 66-93 (1981; Zbl 0477.05019). It was previously thought there were 59 inequivalence classes of Hadamard matrices of order 24.
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A Hadamard matrix of order 268
Graphs and Combinatorics, 1985The existence of Hadamard matrices of order 268 is established. More generally, suppose that there exist Williamson matrices of order r. It is shown that this implies the existence of a Hadamard matrix of order 268r. The existence of Baumert-Hall arrays of order 335 and 603 is established as well.
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Unified Matrix Treatment of the Fast Walsh-Hadamard Transform
IEEE Transactions on Computers, 1976A unified matrix treatment is presented for the various orderings of the Walsh-Hadamard (WH) functions using a general framework. This approach clarifies the different definitions of the WH matrix, the various fast algorithms and the reorderings of the WH functions.
Fino, Bernard J., Algazi, V. Ralph
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On the reverse jacket matrix for weighted hadamard transform
Computer Standards & Interfaces, 1998The class of reverse jacket matrices [RJM(H)] and the corresponding restclass RJM(H) [RRJM(H)] are defined; the main property of RJM(H) is that the inverse matrices of its elements can be obtained very easily and have a special structure. RJM(H) is derived using the weighted Hadamard transform corresponding to the matrix X and a basic symmetric matrix /
null Seung-Rae Lee, null Moon Ho Lee
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Hadamard Matrix on Cryptographic Problems
Advances in Physics Research, 2022Bambang Hendriya Guswanto +2 more
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