Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Nobuyuki Tamura"'
Autor:
Nobuyuki Tamura
Publikováno v:
Quality and Reliability Engineering International. 38:3002-3016
We consider a multi-state system whose deterioration is modeled as a semi-Markov Process with an absorbing state. The system can suffer major and minor failures. When the system reaches the absorbing state, major failure occurs and the system is repl
Autor:
Nobuyuki Tamura
Publikováno v:
Quality & Reliability Engineering International; Oct2022, Vol. 38 Issue 6, p3002-3016, 15p
Autor:
Nobuyuki Tamura
Publikováno v:
Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability. 232:777-785
This article considers a process that produces items and in which the process mean is observed periodically. We use a state-space model to describe the relationship between the process mean and the quality characteristic of the items. At each observa
Publikováno v:
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. :2084-2090
Publikováno v:
Journal of Quality in Maintenance Engineering. 19:38-49
PurposeThis paper aims to present a method for calculating the top event probability of a fault tree with priority AND gates.Design/methodology/approachThe paper makes use of Merle's temporal operators for obtaining the minimal cut sequence set of a
Publikováno v:
Quality Technology & Quantitative Management. 9:231-241
Fault tree (FT) is one of powerful tools for reliability analysis. The conventional FT usually considers only failure occurrence as an input event. However, considering repair in FT improves the analysis capability of FT. This FT is referred to as a
Publikováno v:
Journal of Physics: Conference Series. 969:012154
We report electric and magnetic field responses of single-electron transistors (SETs) comprising a superconducting island with ferromagnetic (FM) leads. We fabricated two SETs, one of which had relatively high resistance and the other had relatively
Autor:
Takashi Murashita, Gengo Sunagawa, Akihito Matsushita, Tatsuhiko Komiya, Genichi Sakaguchi, Taira Kobayashi, Tomokazu Furukawa, Nobuyuki Tamura
Publikováno v:
Japanese Journal of Cardiovascular Surgery. 38:35-39
症例は20歳,男性.大動脈弁位の感染性心内膜炎(無冠尖に疣贅)にて他院で大動脈弁形成術(AVP)を施行された後,しだいに大動脈弁閉鎖不全症(AR)が増悪し,労作時息切れを主訴と
Publikováno v:
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. :1600-1607
This paper considers a two-echelon repair model where several series systems comprising multiple items are operated in each base. We propose a basic model and two modified models. For two models, approximation methods are developed to derive the syst
Autor:
Nobuyuki Tamura
Publikováno v:
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. :467-473
This paper examines a system which is inspected at equally spaced points in time. We express the observed states of the system as a discrete time Markov chain with an absorbing state. It is assumed that the true state is certainly identified through