検索条件

閉じる

検索結果 184 件

著者 難波 英樹|
発行日 1964-10-30
出版物タイトル 岡山医学会雑誌
76巻
10号
資料タイプ 学術雑誌論文
著者 川崎 明徳|
発行日 1965-03-30
出版物タイトル 岡山医学会雑誌
77巻
3号
資料タイプ 学術雑誌論文
著者 貞本 和彦|
発行日 1965-02-28
出版物タイトル 岡山医学会雑誌
77巻
2号
資料タイプ 学術雑誌論文
JaLCDOI 10.18926/17844
フルテキストURL Mem_Fac_Eng_OU_43_75.pdf
著者 大江 啓太| 小西 正躬| 今井 純|
抄録 As is well known, an advanced knowledge and know-how are needed in the design and the diagnosis work. Further, human experts can cope with the recent trend of customers needs. Therefore, the design and the diagnosis work have been privately performed in the past, and its information cannot be shared. In addition, the number of experts is decreasing. It is a very important problem to maintain and to extend experts technologies having been built up. For the purpose, methods and systems for technical inheritance of the advanced techniques of the skilled engineers are needed to train the unskilled operators and also can assist skilled operators. In this research, attention is focused on the design of analog filter circuit. To attain the target, the circuit structural classifier system to support design work is developed. Furthermore, simulation technology for hot strip rolling mills based on distributed agents is presented aimed to develop tools for the diagnosis of hot strip rolling mills operation.
出版物タイトル Memoirs of the Faculty of Engineering, Okayama University
発行日 2009-01
43巻
開始ページ 75
終了ページ 92
ISSN 1349-6115
言語 英語
論文のバージョン publisher
NAID 120002308900
著者 大滝 達郎|
発行日 1971-10-30
出版物タイトル 岡山医学会雑誌
83巻
9-10号
資料タイプ 学術雑誌論文
著者 目黒 忠道|
発行日 1975-04-30
出版物タイトル 岡山医学会雑誌
87巻
3-4号
資料タイプ 学術雑誌論文
タイトル(別表記) A CACNB4 mutation showing altered Ca(v)2.1 function in a patient with Dravet syndrome
フルテキストURL 121_149.pdf
著者 大守 伊織| 大内田 守| 御牧 信義| 西木 禎一| 富澤 一仁| 松井 秀樹|
キーワード てんかん Dravet 症候群 CACNB4遺伝子 SCN1A 遺伝子
出版物タイトル 岡山医学会雑誌
発行日 2009-12-01
121巻
3号
開始ページ 149
終了ページ 156
ISSN 0030-1558
言語 日本語
著作権者 岡山医学会
論文のバージョン publisher
DOI 10.4044/joma.121.149
NAID 120002308814
著者 好永 順二|
発行日 1979-12-30
出版物タイトル 岡山医学会雑誌
91巻
11-12号
資料タイプ 学術雑誌論文
著者 白川 和豊|
発行日 1985-04-30
出版物タイトル 岡山医学会雑誌
97巻
3-4号
資料タイプ 学術雑誌論文
JaLCDOI 10.18926/15828
フルテキストURL Mem_Sch_Eng_OU_17_2_15.pdf
著者 Tanada Yoshihiro| Sano Hiroya| Xu Hai|
抄録 Optical-fiber multi-level PCM transmission system is investigated on the transmission distance and bit rate. A communication channel is established as follows: a light signal is modulated in intensity with a completely-balanced M-Ievel code at a transmitter, and is propagated over an optical glass fiber, and is demodulated at a receiver where the signal with an additive noise is processed through a PD, an equalizing amplifier, a matched filter, (M-l) comparators and a decision circuit. The relative power of the noise from the amplifier is increased in accordance with the reciprocal of fiber's transmittance, where shot noise and thermal noise are smoothed and decreased in power by the matched filter. The relation between the BER and the SNR leads the transmission distance. The product of the transmission distance and bit rate takes the large maximum at the large values of SNR and M. The large value of M is suitable for low-speed and high-rate system, and the interference system.
出版物タイトル Memoirs of the School of Engineering, Okayama University
発行日 1983-06-30
17巻
2号
開始ページ 15
終了ページ 29
ISSN 0475-0071
言語 英語
論文のバージョン publisher
NAID 120002307714
JaLCDOI 10.18926/15826
フルテキストURL Mem_Sch_Eng_OU_17_2_1.pdf
著者 Nakanishi Sen-ichiro| Katsuyama Yoshiaki| Himei Toyoji|
抄録 The paper presents the computer aided design (CAD) method, the program, the design and the experimental results of inverse parallel thyristor phase control circuits. The calculated values agree well with the measured. The CAD program contains the next two methods which are inquired carefully by authors, such as (i) the optimization by SUMT (Sequential Unconstrained Minimization Technique) method, and (ii) the combined use of the gradient and the cramp calculation methods.
出版物タイトル Memoirs of the School of Engineering, Okayama University
発行日 1983-06-30
17巻
2号
開始ページ 1
終了ページ 14
ISSN 0475-0071
言語 英語
論文のバージョン publisher
NAID 120002307323
JaLCDOI 10.18926/15816
フルテキストURL Mem_Sch_Eng_OU_17_1_15.pdf
著者 Himei Toyoji| Nakanishi Sen-ichiro| Funabiki Shigeyuki| Komatsubara Hitoshi| Kurose Osamu|
抄録 An ac phase control circuit by thyristor is widely used in industry, The characteristics of the singlephase circuit with series RLC elements are numerically analyzed, and is reported the interesting phenomenon of step-up voltage without transformer. However, the performance of three phase phase control circuit with series RLC elements is not made clear. In this paper, the performance of three-phase control circuit of a balanced and an unbalanced load with series RLC elements is described. The analytical programs with each load are developed, and it is clarified that the calculated by this analytical program agree well with the measured. The calculated results, e.g. waveforms, RMS values of voltage and current, power, and power factor are illustrated and discussed the step-up phenomenon in three phase.
出版物タイトル Memoirs of the School of Engineering, Okayama University
発行日 1983-02-25
17巻
1号
開始ページ 15
終了ページ 40
ISSN 0475-0071
言語 英語
論文のバージョン publisher
NAID 120002307185
JaLCDOI 10.18926/15807
フルテキストURL Mem_Sch_Eng_OU_16_2_31.pdf
著者 Himei Toyoji| Nakanishi Sen-ichiro| Funabiki Shigeyuki|
抄録 The influence of magnetic saturation of iron-core on the performance of thyristor phase control circuit with series RLC elements is described. The circuit is analyzed by applying an approximate model of three straight lines to the flux Φ vs. current i curve of the iron-core reactor. And the influence on waveforms, r.m.s. values, power factor and response are discussed.
出版物タイトル Memoirs of the School of Engineering, Okayama University
発行日 1982-03-29
16巻
2号
開始ページ 31
終了ページ 43
ISSN 0475-0071
言語 英語
論文のバージョン publisher
NAID 120002307371
JaLCDOI 10.18926/15806
フルテキストURL Mem_Sch_Eng_OU_16_2_17.pdf
著者 Himei Toyoji| Nakanishi Sen-ichiro| Funabiki Shigeyuki|
抄録 The phase control characteristics in a thyristor phase control circuit with parallel resonance elements indicate very interesting phenomenon. Several extreme values appear on the phase control curve. The phenomenon is different from the step-up one in a thyristor phase control circuit with series RLC elements which is interpreted as series resonance. To comprehend the circuit performance with those loads, it is necessary that the phenomenon on extreme value is physically clarified from other viewpoints. In this paper the performance in this circuit is studied from two viewpoints of a natural oscillation and a parallel resonance. Then, it is found that the performance depends on a natural frequency in thyristor conducting period and a parallel resonance frequency in thyristor non-conducting period. Therefore, the interesting phenomenon on extreme value is affected by the alternative of natural frequency or parallel resonance frequency.
出版物タイトル Memoirs of the School of Engineering, Okayama University
発行日 1982-03-29
16巻
2号
開始ページ 17
終了ページ 29
ISSN 0475-0071
言語 英語
論文のバージョン publisher
NAID 120002307189
JaLCDOI 10.18926/15774
フルテキストURL Mem_Sch_Eng_OU_18_1_91.pdf
著者 Sano, Hiroya| 古賀 隆治| Kosaka, Megumi| Wake, Ichiro|
抄録 This paper presents an optical-waveform synthesizer as one of the applications of optical bistable devices. This device is advantageous in terms of faster operation in which width of each pulse obtained is down to the order of subnanosecond, because this device employs both GaAs- and Si-optoelectronic switches as photodetector. Optical pulse shaping as a preliminary experiment is also described.
出版物タイトル Memoirs of the School of Engineering, Okayama University
発行日 1984-03-30
18巻
1号
開始ページ 91
終了ページ 100
ISSN 0475-0071
言語 英語
論文のバージョン publisher
NAID 120002307204
JaLCDOI 10.18926/15766
フルテキストURL Mem_Sch_Eng_OU_15_2_1.pdf
著者 Nakanishi Sen-ichiro| Ishida Hideaki| Himei Toyoji|
抄録 The systematic analytical method is reqUired for the ac phase control circuit by means of an inverse parallel thyristor pair which has a series and parallel L-C resonant load, because the phase control action causes abnormal and interesting phenomena, such as an extreme increase of voltage and current, an unique increase and decrease of contained higher harmonics, and a wide variation of power factor, etc. In this paper, the program for the analysis of the thyristor phase control circuit with a series and parallel connected load of series R-L-C circuit units, is been developed. By means of the program, the transient and steady state characteristics of the circuit can be calculated and then comparative study of various versions of circuits can be carried out systematically. The usefulness of the program is demonstrated by some numerical calculated examples.
出版物タイトル Memoirs of the School of Engineering, Okayama University
発行日 1981-03-30
15巻
2号
開始ページ 1
終了ページ 19
ISSN 0475-0071
言語 英語
論文のバージョン publisher
NAID 120002307503
JaLCDOI 10.18926/15753
フルテキストURL Mem_Sch_Eng_OU_15_1_17.pdf
著者 Yamamoto Yoshitake| Yamamoto Tatsuma|
抄録 In the case of non-invasive measurement of bioelectric potential from body surface, the influence of the skin impedance has been investigated by using strict equivalent circuits of skin impedances. The relationship between the characteristic of skin impedance and the wave distortion was made clear. Furthermore, in the case of electrocardiograph, the shift potential of indifferent electrode to standard potential was obtained by means of simulation, and the distortions caused by connective resistances of a central terminal and skin impedance were quantitatively explained.
出版物タイトル Memoirs of the School of Engineering, Okayama University
発行日 1980-11-29
15巻
1号
開始ページ 17
終了ページ 28
ISSN 0475-0071
言語 英語
論文のバージョン publisher
NAID 120002307780
JaLCDOI 10.18926/15739
フルテキストURL Mem_Sch_Eng_OU_14_1_39.pdf
著者 Nogi, Shigeji| Fukui, Kiyoshi|
抄録 Some behaviors of a lattice soliton in nonlinear L-C ladder lines with abrupt parameter change are investigated. The results of computer and circuit experiments show that in the case of a soliton incident upon the line of larger characteristic impedance and of higher phase velocity in linearized-line-limit, the transmitted wave evolves into larger number of solitons. The experimental results can be well explained by use of both linearization approximation for the line near the junction and the theory by Gardner, Greene, Kruskal and Miura.
出版物タイトル Memoirs of the School of Engineering, Okayama University
発行日 1979-12-01
14巻
1号
開始ページ 39
終了ページ 53
ISSN 0475-0071
言語 英語
論文のバージョン publisher
NAID 120002307868
JaLCDOI 10.18926/15721
フルテキストURL Mem_Sch_Eng_OU_12_53.pdf
著者 Fujitsuka Takeshi| Agusa Toru|
抄録 In recent years, the development of a high power transistor element is proceeding. A high power inverter circuit using power transistors are finding a good number of applications in induction heating and melting. Turn off time of power transistors occupies 5-lOμs of switching characteristics. A driving method to give base inputs for a half period is widely used for a inverter circuit. But this method has the following defects, the short-circuit current flows through two transistors because the other pair transistors turn on before one pair transistors turn off. So the switching loss is increased, the maximum output and the efficiency are decreased. In this paper, a driving method to give base inputs for the less period as compared with a half period is discussed. Using this method, the foregoing defects is lost and the driving frequency is able to become higher. In addition, it become clear that the square waveform output is given using this method in the case of R-L load.
出版物タイトル Memoirs of the School of Engineering, Okayama University
発行日 1978-02-25
12巻
開始ページ 53
終了ページ 58
ISSN 0475-0071
言語 英語
論文のバージョン publisher
NAID 120002307552