著者

松田 新市

出版者

一般社団法人 電気学会

雑誌

電氣學會雜誌 (ISSN:00202878)

巻号頁・発行日

vol.76, no.818, pp.1360-1367, 1956-11-01 (Released:2008-11-20)

参考文献数

1

著者

川嶋 宏 稲葉 清章

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)

巻号頁・発行日

vol.107, no.9, pp.822-828, 1987-09-20 (Released:2008-12-19)

参考文献数

2

著者

岡田 桂祐 日下部 真吾 高橋 亮輔 鈴木 憲吏

出版者

一般社団法人 電気学会

雑誌

電気学会誌 (ISSN:13405551)

巻号頁・発行日

vol.136, no.5, pp.307-310, 2016

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1.はじめに 東日本旅客鉄道株式会社 (以下JRE) では山手線向けに新型通勤電車E235系 (以下E235系) を開発した。山手線は東京都内の主要駅を結んでおり,1日あたり100万人以上が利用する日本を代表する路線の一つである。2018年には量産が開始され,東京オリンピックが開催される

著者

張 暁林 若松 秀俊

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)

巻号頁・発行日

vol.119, no.5, pp.539-544, 1999-05-01 (Released:2008-12-19)

参考文献数

3

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New equivalent circuits of neuron, different from the equivalent circuit of Hodgkin-Huxley, are proposed. In these circuits, ion-condensers are a concept to represent the equilibrium potential of ions, and power sources to represent ion-pumps. Uning these equivalent circuits, we derive the equations which relate the resting membrane potential with capacity of the ion-pumps, intracellular impermeant anions concentrations, extracellular ions concentrations and permeability of ions transported by the ion-pumps. Using these equations, we elaluate the effect of presence of intracellular impermeant anions on the resting membrane potential

著者

北川 敏男

出版者

一般社団法人 電気学会

雑誌

電氣學會雜誌 (ISSN:00202878)

巻号頁・発行日

vol.89, no.972, pp.1609-1616, 1969-09-01 (Released:2008-11-20)

著者

曹 凱 松田 隆太 矢野 陽平 浜松 芳夫

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌D(産業応用部門誌) (ISSN:09136339)

巻号頁・発行日

vol.125, no.6, pp.645-651, 2005 (Released:2005-09-01)

参考文献数

11

被引用文献数

2

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This paper deals with a merging section of Personal Rapid Transit system. Several schemes have been proposed for the control of vehicles in PRT systems. In quasi-synchronous control systems, one flow of traffic must form a queue at a merging section in order to avoid the collision of vehicles. In other words, a queue is formed on one of the lines, which is called the sub line; the other line is called the main line. Basically, vehicles on the main line have priority. We propose a control strategy whereby vehicles on the main line are usually not stopped; vehicles on the main line are only stopped when the number of waiting vehicles on the sub line exceeds some specific number. Therefore, queues are formed on the main line and the sub line, respectively. This paper presents a fundamental discussion of the effects of the double queue and the relationship between traffic density and the behavior of traffic.

著者

長濱 重麿

出版者

一般社団法人 電気学会

雑誌

電氣學會雜誌 (ISSN:00202878)

巻号頁・発行日

vol.67, no.706, pp.137-140, 1947-09-01 (Released:2008-11-20)

著者

Satoru Kikuchi Kazuhiko Hamamoto

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)

巻号頁・発行日

vol.136, no.7, pp.995-1000, 2016-07-01 (Released:2016-07-01)

参考文献数

10

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In the study reported in this paper, we investigated the relationship between a schema and applied programming skills in computer programming education. A schema is a cognitive structure that is gained from experience, and it is assumed to affect an applied skill. The experiment in the present study comprised eight writing tasks and 45 reading tasks, and was designed to investigate three issues: (1) the details of a schema (i.e., knowledge related to program writing skills), (2) the relationship between a schema and applied skills, and (3) the differences between a schema and fragile knowledge. The results show that the group with high writing scores showed advanced applied skills, and there was certain common knowledge in the group with high writing scores that may reflect a programming schema. These results suggest that a teaching method designed to increase the experience of various programming codes through a large number of examples may be effective, with those codes slightly different from each other in order to create a programming schema.

著者

大川 勉 上西 司 平林 秀一 鈴木 亮 三井 浩康 小泉 寿男

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)

巻号頁・発行日

vol.129, no.9, pp.1747-1758, 2009-09-01 (Released:2009-09-01)

参考文献数

21

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The business in the enterprise is closely related with the information system to such an extent that the business activities are difficult without the information system. The system design technique that considers the business process well, and that enables a quick system development is requested. In addition, the demand for the development cost is also severe than before. To cope with the current situation, the modeling technology named BPM(Business Process Management/Modeling)is drawing attention and becoming important as a key technology. BPM is a technology to model business activities as business processes and visualize them to improve the business efficiency. However, a general methodology to develop the information system using the analysis result of BPM doesn't exist, and a few development cases are reported. This paper proposes an information system development method combining business process modeling with executable modeling. In this paper we describe a guideline to support consistency of development and development efficiency and the framework enabling to develop the information system from model. We have prototyped the information system with the proposed method and our experience has shown that the methodology is valuable.

著者

田村 俊世 小川 充洋 依田 美紀子 戸川 達男

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)

巻号頁・発行日

vol.118, no.7-8, pp.993-998, 1998-07-01 (Released:2009-10-02)

参考文献数

12

被引用文献数

3

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The aim of this study was to provide adequate home health monitoring in the home by using fully automated biosignal measurement to support daily health care and to improve quality of life. We attempted to develop a home health monitoring system that did not provide any restrictions during sleep. bathing or elimination. A set of room containing a bedroom. bathroom. and toilet room was constructed. The system consisted of monitoring devices and a computer terminal for collecting data. The data were automatically collected from the monitoring devices placed at the bed, bath, and toilet and were transferred to a data terminal in the bedroom and stored for further analysis. The data acquisition system is now being used for seven days and data are collected without any trouble.

著者

工藤 寛之

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌. E, センサ・マイクロマシン部門誌 (ISSN:13418939)

巻号頁・発行日

vol.135, no.5, pp.NL5_4, 2015

著者

林屋 均 宮武 昌史

出版者

一般社団法人 電気学会

雑誌

電気学会誌 (ISSN:13405551)

巻号頁・発行日

vol.133, no.12, pp.817-820, 2013-12-01 (Released:2013-12-01)

参考文献数

19

被引用文献数

1

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本記事に「抄録」はありません。

著者

富永 哲欣

出版者

一般社団法人 電気学会

雑誌

電気学会誌 (ISSN:13405551)

巻号頁・発行日

vol.138, no.10, pp.661-665, 2018-10-01 (Released:2018-10-01)

参考文献数

43

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1.はじめに高度情報化社会とよばれて久しく,電力,通信,交通など多くの社会システムは,電子化,情報化され,スマート化されてきている(1)。例えば身近に感じる高高度の高出力電磁界と言うと,雷が連想される。毎年夏になると,雷害のニュースがなされ,例えば昨年も,2017年8月19日,

著者

鎌田 哲夫

出版者

一般社団法人 電気学会

雑誌

電氣學會雜誌 (ISSN:00202878)

巻号頁・発行日

vol.88, no.962, pp.2135-2141, 1968-11-01 (Released:2008-04-17)

参考文献数

8

著者

石垣 将紀 藤田 英明

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌D(産業応用部門誌) (ISSN:09136339)

巻号頁・発行日

vol.127, no.10, pp.1090-1096, 2007-10-01 (Released:2007-10-01)

参考文献数

17

被引用文献数

3 6

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This paper deals with a new resonant gate-drive circuit for power MOSFETs. The proposed gate-drive circuit is characterized by a resonant inductor connected in series to the gate terminal of the MOSFET. It is possible to charge or discharge the input capacitance of the MOSFET by using the resonance between the inductor and the input capacitance. Experimental results are shown to verify the viability of the resonant gate-drive circuit. As a result, the proposed resonant gate-drive circuit reduces its power consumption to one tenth, compared with a conventional one. It was experimentally clarified that the proposed circuit makes it possible to improve efficiency of a high-frequency inverter using MOSFETs.

著者

福田 典子 舟木 剛

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌D(産業応用部門誌) (ISSN:09136339)

巻号頁・発行日

vol.143, no.3, pp.196-204, 2023-03-01 (Released:2023-03-01)

参考文献数

26

被引用文献数

3

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This study aims to develop a power supply system without a traction transformer for weight reduction and downsizing. Transformer-less power supply is expected to realize step-down, rectification, isolation, and motor drive using a high voltage silicon carbide (SiC) power device. The primary challenge of this work is developing a novel circuit that isolates the motor drive circuit from the AC line without using the traction transformer. Accordingly, we devised a flying capacitor circuit to solve the existing problems and aims for capacitive isolation. Subsequently, we devise a nesting capacitor as a short-circuit prevention measure. We report the isolated circuit configuration and operating principle.

著者

深尾 正

出版者

一般社団法人 電気学会

雑誌

電氣學會雜誌 (ISSN:00202878)

巻号頁・発行日

vol.101, no.10, pp.965-969, 1981-10-20 (Released:2008-04-17)

参考文献数

13

被引用文献数

1

著者

細谷 泰雄

出版者

一般社団法人 電気学会

雑誌

電氣學會雜誌 (ISSN:00202878)

巻号頁・発行日

vol.103, no.10, pp.1003-1009, 1983-10-20 (Released:2008-04-17)

参考文献数

2

著者

中山 正人 福田 健一 荒木 拓人 恩田 和夫

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌B(電力・エネルギー部門誌) (ISSN:03854213)

巻号頁・発行日

vol.125, no.2, pp.213-220, 2005 (Released:2005-05-01)

参考文献数

16

被引用文献数

3 2

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The secondary batteries for the electric vehicle (EV) generate much heat during rapid charge and discharge cycles, when the EV starts quickly consuming the battery power and stops suddenly recovering the inertia energy. The generated heat increases significantly the cell temperature and causes possibly bad influences on the battery performance and the safely requirement. So we have studied the thermal behavior of nickel/metal hydride (Ni/MH) battery during rapid charge and discharge cycles, applying our previous battery thermal model, which have been confirmed to agree with the experimental results at smaller charge current than the rated current. The heat sources by the entropy change, the hydrogen occlusion and the side reaction have been referred to the published data, and the overpotential resistance and the current efficiency, the ratio of main reaction current to charge current, have been measured experimentally through the rapid charge and discharge characteristics with constant current. By using these data our thermal model for Ni/MH battery has estimated its temperature increase, which agrees well with the measured temperature rise, with the root mean square error of 1.5°C and 2.1°C for charge and discharge cycles, respectively.

著者

田渕 史 渡部 祥山 Stanislav L. Karsten 籔内 研佑 佐原 義基 髙里 実 藤本 和也 横川 隆司

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌E(センサ・マイクロマシン部門誌) (ISSN:13418939)

巻号頁・発行日

vol.143, no.9, pp.306-312, 2023-09-01 (Released:2023-09-01)

参考文献数

14

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Main function of glomerulus is to filter plasma and waste products from blood. The filtration function is known to be impaired and irreversibly damaged by a disease or a drug administration. Therefore, nephrotoxicity assessment is essential for a new drug development. However, conventional animal models for drug screening cannot appropriately assess toxicity of drugs to human glomerulus. In this study, we constructed a glomerulus-on-a-chip using human podocytes and evaluated the selectivity of inulin and albumin for filtration function.