Masato Kitakami

Learn More
Error locating codes (EL codes), first proposed by J.K. Wolf and B. Elspas (1963), have the potential to be used to identify the faulty module for fault isolation and reconfiguration in fault-tolerant computer systems. A new class of EL codes suitable for memory systems organized with b-bit (b/spl ges/2) byte-organized semiconductor memory chips which are(More)
Recently, Trust has been recognized as an important factor for Grid computing security. In this paper, we propose a trust model in Grid system. It consists of Application Domain (AD), Client Domain (CD), Resource Domain (RD), and Trust Manager (TM). TM controls the relationship between RD and CD depending on the trust level value of each client and(More)
Error locating code, a class of error control codes, can indicate the location of the error and is useful to fault diagnosis in computer systems and reduction of the retransmission cost in communication systems. The authors proposed two types of burst error locating codes called B/sub 1/EL codes and SEC-B/sub 1/EL codes. Since single-hit errors are more(More)
This paper proposes a new class of error locating codes which corrects random single-bit errors and indicates a location of an erroneous b-bit byte which includes e-bit errors, where 2 < = e < b, called SEC S e=b EL codes. This type of codes is very suitable for an application to memory systems constructed from byte-organizedmemory chips because this(More)
Recently, the number of remote systems using the Internet has been increased and the services provided by such systems get various. They are required to have high dependability. The existing evaluations have some problems.For example, the evaluations based on RASIS are vague and those provided by Japanese government are very complicated. The existing(More)