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35 results on '"Fukui, Chihiro"'

3. Functions of mucosal associated invariant T cells in eye diseases

Author

Fukui, Chihiro, primary, Yamana, Satoshi, additional, Xue, Yanqi, additional, Shirane, Mariko, additional, Tsutsui, Hiroki, additional, Asahara, Kenichiro, additional, Yoshitomi, Keiko, additional, Ito, Takako, additional, Lestari, Tantri, additional, Hasegawa, Eiichi, additional, Yawata, Nobuyo, additional, Takeda, Atsunobu, additional, Sonoda, Koh-Hei, additional, and Shibata, Kensuke, additional

Published
2024
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6. Simulation of Abnormal Grain Growth Using the Cellular Automaton Method.

Author

Murata, Kenji, Fukui, Chihiro, Sun, Fei, Chen, Ta-Te, and Adachi, Yoshitaka

Subjects
*CELLULAR automata, *CELL growth, *FATIGUE limit, *HEAT treatment, *CRYSTAL grain boundaries, *GRAIN, *MANUFACTURING processes
Abstract

The abnormal grain growth of steel, which is occurs during carburization, adversely affects properties such as heat treatment deformation and fatigue strength. This study aimed to control abnormal grain growth by controlling the materials and processes. Thus, it was necessary to investigate the effects of microstructure, precipitation, and heat treatment conditions on abnormal grain growth. We simulated abnormal grain growth using the cellular automaton (CA) method. The simulations focused on the grain boundary anisotropy and dispersion of precipitates. We considered the effect of grain boundary misorientation on boundary energy and mobility. The dispersion state of the precipitates and its pinning effect were considered, and grain growth simulations were performed. The results showed that the CA simulation reproduced abnormal grain growth by emphasizing the grain boundary mobility and the influence of the dispersion state of the precipitate on the occurrence of abnormal grain growth. The study findings show that the CA method is a potential technique for the prediction of abnormal grain growth. [ABSTRACT FROM AUTHOR]

Published
2024
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9. A cooperative protection system with an agent model

Author

Tomita, Yasushi, Fukui, Chihiro, Kudo, Hiroyuki, Koda, Jun, and Yabe, Kuniaki

Subjects
Protective relays -- Analysis, Electric fault location -- Models, Business, Computers, Electronics, Electronics and electrical industries
Published
1998

10. Fault diagnosis of power systems

Author

Sekine, Yasuji, Akimoto, Yoshiakira, Kunugi, Masahiko, Fukui, Chihiro, and Fukui, Shinta

Subjects
Power Systems, Diagnostic Equipment, Fault Tolerance, Electrical Engineering, Accuracy, Knowledge-Based System, Power Plants, Diagnostics, Expert Systems
Published
1992

29. Fault Section Estimating Method Based on Knowledge and Physical Objective Model.

Author

Fukui, Chihiro and Kawakami, Junzo

Subjects
*ELECTRIC power system protection, *ELECTRIC circuits, *ELECTRIC lines, *ELECTRICAL engineering, *ENGINEERING
Abstract

This paper describes a new method to estimate the fault section using information from protective relays and circuit breakers in the first phase mentioned in the preceding. In power system networks, there are many protective relays and circuits breakers in place. However, the function of each relay differs from the others and depends on the relay type and circuit configuration of the network. Moreover, network configuration is changed frequently to match the running conditions. In fault section detection, definitions of relay schemes and diagnosis rules are very important and must be uniform. For this reason, the concept of "physical model" is introduced herein. It is the hierarchical knowledge base that represents domain knowledge. The physical model contains the graphical representation of a power system network, including circuit description and connection between CTS and relays, and description of various electrical phenomena observed on the network. All inference on fault environment are derived from fundamental principles. We will first discuss the representation format on the network and the protective relaying scheme and follow with a discussion on estimating methods for a fault section based on schema. [ABSTRACT FROM AUTHOR]

Published
1987
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