Search Results - "Harada, Masaaki"

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  1. 1

    Construction of binary LCD codes, ternary LCD codes and quaternary Hermitian LCD codes by Harada, Masaaki

    Published in Designs, codes, and cryptography (01-10-2021)
    “…We give two methods for constructing many linear complementary dual (LCD for short) codes from a given LCD code, by modifying some known methods for…”
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    A method for constructing quaternary Hermitian self-dual codes and an application to quantum codes by Harada, Masaaki

    Published in Designs, codes, and cryptography (2024)
    “…We introduce quaternary modified four μ -circulant codes as a modification of four circulant codes. We give basic properties of quaternary modified four μ…”
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  3. 3

    Characterization and classification of optimal LCD codes by Araya, Makoto, Harada, Masaaki, Saito, Ken

    Published in Designs, codes, and cryptography (01-04-2021)
    “…Linear complementary dual (LCD) codes are linear codes that intersect with their dual trivially. We give a characterization of LCD codes over F q having large…”
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  4. 4

    Some restrictions on the weight enumerators of near-extremal ternary self-dual codes and quaternary Hermitian self-dual codes by Araya, Makoto, Harada, Masaaki

    Published in Designs, codes, and cryptography (01-05-2023)
    “…We give restrictions on the weight enumerators of ternary near-extremal self-dual codes of length divisible by 12 and quaternary near-extremal Hermitian…”
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    Quaternary Hermitian Linear Complementary Dual Codes by Araya, Makoto, Harada, Masaaki, Saito, Ken

    Published in IEEE transactions on information theory (01-05-2020)
    “…The largest minimum weights among quaternary Hermitian linear complementary dual codes are known for dimension 2. In this paper, we give some conditions on the…”
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    On the minimum weights of binary linear complementary dual codes by Araya, Makoto, Harada, Masaaki

    Published in Cryptography and communications (01-03-2020)
    “…Linear complementary dual codes (or codes with complementary duals) are codes whose intersections with their dual codes are trivial. We study the largest…”
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  7. 7

    On the minimum weights of binary LCD codes and ternary LCD codes by Araya, Makoto, Harada, Masaaki, Saito, Ken

    Published in Finite fields and their applications (01-12-2021)
    “…Linear complementary dual (LCD) codes are linear codes that intersect with their dual codes trivially. We study the largest minimum weight d2(n,k) among all…”
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    Hadamard matrices related to a certain series of ternary self-dual codes by Araya, Makoto, Harada, Masaaki, Momihara, Koji

    Published in Designs, codes, and cryptography (01-03-2023)
    “…In 2013, Nebe and Villar gave a series of ternary self-dual codes of length 2 ( p + 1 ) for a prime p congruent to 5 modulo 8. As a consequence, the third…”
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    On the classification of quaternary optimal Hermitian LCD codes by Araya, Makoto, Harada, Masaaki

    Published in Cryptography and communications (2022)
    “…We propose a method for classifying quaternary Hermitian LCD codes having large minimum weights. For example, we classify quaternary optimal Hermitian LCD…”
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  10. 10

    Ternary Extremal Four-Negacirculant Self-Dual Codes by Harada, Masaaki, Ishizuka, Keita, Kharaghani, Hadi

    Published in Graphs and combinatorics (01-05-2024)
    “…In this note, we complete a classification of ternary extremal four-negacirculant self-dual codes of lengths 40, 44, 48, 52 and 60…”
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    On the classification of skew Hadamard matrices of order 36 and related structures by Araya, Makoto, Harada, Masaaki, Kharaghani, Hadi, Mohammadian, Ali, Tayfeh-Rezaie, Behruz

    Published in Designs, codes, and cryptography (2024)
    “…Two skew Hadamard matrices are considered SH-equivalent if they are similar by a signed permutation matrix. This paper determines the number of SH-inequivalent…”
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  12. 12

    Quasi-unbiased Hadamard matrices and weakly unbiased Hadamard matrices: A coding-theoretic approach by ARAYA, MAKOTO, HARADA, MASAAKI, SUDA, SHO

    Published in Mathematics of computation (01-03-2017)
    “…This paper is concerned with quasi-unbiased Hadamard matrices and weakly unbiased Hadamard matrices, which are generalizations of unbiased Hadamard matrices,…”
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  13. 13

    On the existence of extremal Type II ℤ_{2 }-codes by Harada, Masaaki, Miezaki, Tsuyoshi

    Published in Mathematics of computation (01-05-2014)
    “…For lengths 8 8 , 16 16 , and 24 24 , it is known that there is an extremal Type II Z 2 k \mathbb {Z}_{2k} -code for every positive integer k k . In this…”
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    Classification of Quaternary Hermitian Self-Dual Codes of Length 20 by Harada, M, Munemasa, A

    Published in IEEE transactions on information theory (01-06-2011)
    “…A classification of quaternary Hermitian self-dual codes of length 20 is given. Using this classification, a classification of extremal quaternary Hermitian…”
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    A neutrophil elastase inhibitor improves lung function during ex vivo lung perfusion by Harada, Masaaki, Oto, Takahiro, Otani, Shinji, Miyoshi, Kentaroh, Okada, Masanori, Iga, Norichika, Nishikawa, Hitoshi, Sugimoto, Seiichiro, Yamane, Masaomi, Miyoshi, Shinichiro

    “…Objective Ex vivo lung perfusion (EVLP) has been used not only for graft evaluation but also for graft reconditioning prior to lung transplantation…”
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  17. 17

    On the classification of weighing matrices and self-orthogonal codes by Harada, Masaaki, Munemasa, Akihiro

    Published in Journal of combinatorial designs (01-01-2012)
    “…We provide a classification method of weighing matrices based on a classification of self‐orthogonal codes. Using this method, we classify weighing matrices of…”
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    Self-dual codes over F5 and s-extremal unimodular lattices by Harada, Masaaki

    Published in Discrete mathematics (01-01-2023)
    “…New s-extremal extremal unimodular lattices in dimensions 38, 40, 42 and 44 are constructed from self-dual codes over F5 by Construction A. In the process of…”
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