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Browsing by Author "Kaji, Yuichi"

Browsing by Author "Kaji, Yuichi"

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  • Kasami, Tadao; Seki, Hiroyuki; Kaji, Yuichi (Nara Institute of Science and Technology奈良先端科学技術大学院大学, 1993-12)
    Finite state translation systems (fsts') are a widely studied computational model in the area of tree automata theory. In this paper, the string generating capacities of fsts' and their subclasses are studied. First, it ...
  • Sugiyama, Kenji; Kaji, Yuichi (Nara Institute of Science and Technology奈良先端科学技術大学院大学, 2008-01)
    LDPC codes is a class of linear codes introduced by Gallager in early 60's. Array LDPC (ALDPC) codes is a class of LDPC codes which are algebraically constructed from a family of array codes. This paper proposes a procedure ...
  • Kaji, Yuichi (一般社団法人情報処理学会, 2015-03-30)
    A random-walk model is investigated and utilized to analyze the performance of a coding scheme that aims to extend the lifetime of flash memory. Flash memory is widely used in various products today, but the cells that ...
  • Takai, Toshinori; Kaji, Yuichi; Seki, Hiroyuki (Nara Institute of Science and Technology奈良先端科学技術大学院大学, 1999-08)
    The authors have proposed a procedure for solving an order-sorted unification problem in an equational theory which is defined by a confluent TRS. The procedure requires an instance of the problem to satisfy that the TRS ...
  • Jason Paul Cruz; Kaji, Yuichi (IARIA, 2015)
    The role-based access control (RBAC) is a natural and versatile model of the access control principle. In the real world, it is common that an organization provides a service to a user who owns a certain role that was ...
  • Kasami, Tadao; Kaji, Yuichi; Amo, Keiji (Nara Institute of Science and Technology奈良先端科学技術大学院大学, 1997-06)
    We propose a slmple and secure user authentication method with the help of slmple memory devices such as magnetic cards. In this method, user's password is divided into two pieces; one is kept in the user's mind and the ...