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Article type: Cover
1999 Volume 21 Issue 4 Pages
Cover1-
Published: 1999
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Article type: Appendix
1999 Volume 21 Issue 4 Pages
i-vi
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Article type: Index
1999 Volume 21 Issue 4 Pages
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Article type: Index
1999 Volume 21 Issue 4 Pages
viii-
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Ryuzo Kaneko
Article type: Article
1999 Volume 21 Issue 4 Pages
179-180
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[in Japanese]
Article type: Article
1999 Volume 21 Issue 4 Pages
181-
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[in Japanese]
Article type: Article
1999 Volume 21 Issue 4 Pages
182-183
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[in Japanese]
Article type: Article
1999 Volume 21 Issue 4 Pages
184-185
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[in Japanese]
Article type: Article
1999 Volume 21 Issue 4 Pages
186-187
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[in Japanese]
Article type: Article
1999 Volume 21 Issue 4 Pages
188-189
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Article type: Appendix
1999 Volume 21 Issue 4 Pages
190-
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Article type: Appendix
1999 Volume 21 Issue 4 Pages
191-
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[in Japanese]
Article type: Article
1999 Volume 21 Issue 4 Pages
192-196
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
1999 Volume 21 Issue 4 Pages
197-198
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[in Japanese]
Article type: Article
1999 Volume 21 Issue 4 Pages
199-200
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
1999 Volume 21 Issue 4 Pages
201-202
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1999 Volume 21 Issue 4 Pages
203-204
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1999 Volume 21 Issue 4 Pages
205-206
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1999 Volume 21 Issue 4 Pages
207-208
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[in Japanese], [in Japanese]
Article type: Article
1999 Volume 21 Issue 4 Pages
209-210
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[in Japanese], [in Japanese]
Article type: Article
1999 Volume 21 Issue 4 Pages
211-212
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[in Japanese], [in Japanese]
Article type: Article
1999 Volume 21 Issue 4 Pages
213-214
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[in Japanese], [in Japanese]
Article type: Article
1999 Volume 21 Issue 4 Pages
215-216
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[in Japanese], [in Japanese]
Article type: Article
1999 Volume 21 Issue 4 Pages
217-218
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[in Japanese]
Article type: Article
1999 Volume 21 Issue 4 Pages
219-220
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[in Japanese], [in Japanese]
Article type: Article
1999 Volume 21 Issue 4 Pages
221-222
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[in Japanese], [in Japanese]
Article type: Article
1999 Volume 21 Issue 4 Pages
223-224
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[in Japanese]
Article type: Article
1999 Volume 21 Issue 4 Pages
225-226
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[in Japanese], [in Japanese]
Article type: Article
1999 Volume 21 Issue 4 Pages
227-228
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Kodo Ito, Kazuyuki Teramoto, Toshio Nakagawa
Article type: Article
1999 Volume 21 Issue 4 Pages
229-236
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The antenna of a phased array radar (PAR) consists of a number of individual radiating elements and it steeres the antenna beam direction by shifting signal phases of these elements. It should be inspected and maintained at periodic times to hold the required performance of a radar system. However, an antenna can not be maintained so frequently, since frequent replacements involve the downtime of system and degrade the system availability. This paper suggests a maintenance policy for a PAR where a PAR is periodically inspected and its failed elements are replace at the M-th (M = 1, 2, ...) inspection. If the number of failed elements exceeds a prespecified value, they are replaced at the succeeding inspection. When failures of elements occur following a Poisson process, the expected cost per unit of time is derived and an optimal M^* which minimizes it is discussed. Finally, numerical examples are given.
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[in Japanese]
Article type: Article
1999 Volume 21 Issue 4 Pages
237-239
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Article type: Appendix
1999 Volume 21 Issue 4 Pages
240-241
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[in Japanese]
Article type: Article
1999 Volume 21 Issue 4 Pages
242-243
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Article type: Appendix
1999 Volume 21 Issue 4 Pages
244-
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[in Japanese]
Article type: Article
1999 Volume 21 Issue 4 Pages
245-
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Article type: Appendix
1999 Volume 21 Issue 4 Pages
246-
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Article type: Appendix
1999 Volume 21 Issue 4 Pages
247-
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Article type: Cover
1999 Volume 21 Issue 4 Pages
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