著者

藁科 茂 小島 雪夫 中村 静香 松本 啓之亮

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌. B (ISSN:03854213)

巻号頁・発行日

vol.109, no.2, pp.49-56, 1989

著者

小島 康弘 中村 静香 阿部 公哉 高橋 修 塚田 英一 黒川 隆久

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 = The transactions of the Institute of Electrical Engineers of Japan. B, A publication of Power and Energy Society (ISSN:03854213)

巻号頁・発行日

vol.125, no.2, pp.170-176, 2005-02-01

参考文献数

6

被引用文献数

4 2

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This paper presents a newly developed EDC (Economic Dispatching Control) function for Tohoku EPCO's new EMS system. In this new EDC, we can minimize total fuel cost under system security constraints such as "AFC margin considering band width and ramp rate in future band changing schedule" and "power flow constraint considering future maintenance schedule". We formulate EDC problem as "continuous variable (generator output) optimization" under "combinatorial optimization of band schedule". To optimize this problem, Problem Space Search method and interior point QP method are adopted. Test results and the actual operation show that, this new EDC can follow against steep increase and decrease of electric demand cooperating with AFC. This EDC has been operating successfully in Tohoku EPCO since June 2003.

著者

並木 政人 中村 壮亮 橋本 秀紀

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.136, no.7, pp.485-493, 2016

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Recently, wireless charging via magnetic resonance coupling has gained attention because it has the potential of efficient midrange wireless charging. Here, functions such as sensing at the transmitter and wireless communication from the target are the essential elements to realize a standard wireless charging system. Currently, the sensing and communication protocol of the hardware (i.e., the high-frequency power source and antenna configuration) compatible with wireless charging is gaining attention in terms of its cost and space reduction due to the use of common components for multiple functions. However, this protocol has the problem of narrow effective areas due to the fact that the sensing range depends on the fixed Q factor of the antenna. To overcome this problem, the concept of wide-area sensing based on a Q controllable antenna is proposed, and the effectiveness is verified through a theoretical analysis and an experiment. As a result, it is clarified that the effective area can be expanded up to a ratio of the distance g between the transmitting and receiving antennas to the inner diameter d of the antenna g/d =5.0.

著者

杉岡 幸次 十文字 正之 高井 裕司 田代 英夫 豊田 浩一

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌A(基礎・材料・共通部門誌) (ISSN:03854205)

巻号頁・発行日

vol.115, no.9, pp.903-911, 1995-08-20 (Released:2008-07-15)

参考文献数

21

被引用文献数

1

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Simultaneous incorporation and deposition of Si by KrF excimer laser beam irradiation in a silane (SiH4) gas ambient realize to form functionally gradient structure in stainless-steel 304. The process is referred to as the laser implant-deposition (LID). The basic model to achieve such a gradient structure is investigated by analyzing Si depth profiles and total quantities of supplied Si atoms (Si dose) for various experimental conditions. The theories of this model involve both of the photodecomposition of SiH4 gas by KrF excimer laser photons and liquid-phase difusion of the dissociated Si atoms into the stainless-steel. The Si dose is empirically estimated by taking account of the photodecomposition and the mass transport theory. The Si depth profiles are calculated by the liquid-phase diffusion model using the estimated Si dose, showing good agreement with the experimental results. In addition, the hardness, the corrosin property, and the thermal stability of the gradient structure are discussed.

著者

山口 昌樹 大向 一輝

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.137, no.2, pp.310-316, 2017-02-01 (Released:2017-02-01)

参考文献数

29

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Modern society has seen a tremendous growth in the amount of digital data, however a database for human stress currently is not prevalent. Additionally, diagnostic criteria based on evidence, quantitative scales have not been fully established for stress. The purpose of this research is to provide visually presentation method of stress evidence paper in conjunction with web article in order to help people understand and overcome their stress. We propose a stress evidence search engine named “Kokoronoma” incorporated with i) a rate of evidence which express the relationship between the web article and the scientific paper, ii) human machine interface to show the rate of evidence visually. The fabricated stress evidence search engine was evaluated by the 10 young male users to compare with a multipurpose search engine as Google and Google Scholar. Three kinds of search problem as serotonin, mood disorder, and depression were used for the evaluation. As the results, Stress evidence paper and the rate of evidence were showed in conjunction with web article, automatically. The scores of subjective evaluation of the stress evidence search engine for visible observation images, intuitive awareness, and un-complicatedness showed higher than that of the multipurpose search engine. It was considered that the fabricated stress evidence search engine has an effective in reducing the stress of user.

著者

湯本 剛 植月 啓次 松尾谷 徹 津田 和彦

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.137, no.7, pp.987-994, 2017-07-01 (Released:2017-07-01)

参考文献数

21

被引用文献数

1

---

Along with a rapid increase in the size and complexity of software today, the number of required test cases is also increasing. Although a lot of approaches to derive test cases are proposed, in case of deriving test cases for combination of state transition, N-switch coverage using state transition testing is only one approach. This approach cannot manage increasing test cases. In this paper, a practical knowledge to derive high priority procedural combination test cases in test cases from 1-switch coverage using state transition testing is formalized. Procedural combinations between tasks to be tested which is derived from data design documents are defined as rules. It is confirmed that the expected procedural combination test cases can be derived using this approach from a concrete instance of an IT system.

著者

才木 常正 荒木 望 武尾 正弘 吉田 陽一 前中 一介

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.1033-1034, 2016-07-01 (Released:2016-07-01)

参考文献数

5

被引用文献数

1 2

---

In this study, we propose a novel fishing support system using millimeter size acceleration sensors for detecting fish bite. On the base of field test, rod top acceleration of vibration with fish bite and its human cognition were investigated by sensor measurement and verbal communication, respectively. As a result, it was shown that an experimental participant could not cognize all of fish bites that were detected by the sensor. Thus, the validity of the fishing support system with the acceleration sensor mounted on a rod top was confirmed.

著者

才木 常正 荒木 望 兼吉 高宏 武尾 正弘 吉田 陽一 前中 一介

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.137, no.5, pp.770-771, 2017-05-01 (Released:2017-05-01)

参考文献数

5

被引用文献数

2

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In this study, we investigated about fishing gears control when surf casting by a participant. As a result, it was found that the casting distance became longer when the participant released fishing line at the period of time from the maximum to zero of a fishing rod rotation speed. Thus, the validity of a fishing support system, that automatically releases the fishing line at the optimum time decided by the rotation speed data obtained from an acceleration sensor mounted on the fishing rod, was confirmed.

著者

三上 可菜子 高橋 亮輔 東山 和寿 野村 健一

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.137, no.8, pp.561-564, 2017-08-01 (Released:2017-08-01)

参考文献数

1

---

1. はじめに1.1 シンデレラ・テクノロジーとは読者のみなさんは「盛る」という言葉の意味をどのように解釈しているだろうか。一般的には, 例えば「料理を皿に盛る」といった使い方をする言葉であるが, 近年は, 特に若い女性の間で本来の意味と異なる使い方で用いられている。彼女たちにとって「盛る」とは, バーチャル世界

著者

小坂 満隆 明石 吉三 水野 康彦

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.110, no.4, pp.263-272, 1990-04-20 (Released:2008-12-19)

参考文献数

7

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The importance of SIS (Strategic Information System), which supports strategic business operation, has been increasing with the progress of information and communication technology. In SIS, the close connectivity between information and business is a critical success factor. In this paper the authors propose a methodology of planning SIS. First, introducing the business information system diagram, the role of information for business is clarified. Next, such concept is introduced that the information power as effectiveness for business is determined by the connectivity between information quality and information field representing the necessity of information. On the basis of this concept, a methodology of planning SIS, which consists of 3 factors, that is, steps, tools and frameworks, is proposed. The characteristic of the proposed methodology is to find a solution to the complex problem of planning SIS systematically by employing fixed steps, fixed tools and fixed frameworks.

著者

三浦 武雄 沼倉 俊郎

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.75, no.807, pp.1554-1563, 1955-12-01 (Released:2008-11-20)

参考文献数

10

著者

三森 定道

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.115, no.9, pp.1017-1021, 1995-08-20 (Released:2008-12-19)

参考文献数

9

著者

浅野 有康 大野 佳樹 栗田 壮一郎 近藤 圭一郎 篠宮 健志 石川 勝美

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

巻号頁・発行日

vol.137, no.5, pp.369-376, 2017

被引用文献数

5

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<p>Hybrid power source three level inverter is proposed as a main circuit system with energy storage device for increasing regenerative power. This paper proposes a charge and discharge control method to utilize the regenerated energy. The proposed method is verified by experimental tests with a scaled-down model and numerical simulation.</p>

著者

林 重憲 水上 孝一

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.86, no.931, pp.603-610, 1966-04-01 (Released:2008-04-17)

参考文献数

7

著者

高橋 優大

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.133, no.3, pp.NL3_3-NL3_5, 2013-03-01 (Released:2013-03-01)

参考文献数

2

著者

竹内 昭洋

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌A(基礎・材料・共通部門誌) (ISSN:03854205)

巻号頁・発行日

vol.128, no.4, pp.307-310, 2008-04-01 (Released:2008-04-01)

参考文献数

15

被引用文献数

1 1

---

Igneous rocks generally involve positive hole pairs (PHPs), a kind of lattice defects also known as peroxy links: O3X-OO-YO3 with X, Y = Si4+, Al3+ etc. When a portion of such a rock block is stressed or heated, PHPs are deformed and positive holes (p-holes) are activated. They are defect electrons corresponding to the O- electronic state in the O2- sublattice and can spread away into unstressed portion. Currents and positive surface electrifications detected in laboratory stressed igneous rocks can be explained by the p-holes. When the p-holes are activated in the Earth's crust accompanied with seismic or volcanic events, they would lead to anomalous electromagnetic phenomena and could affect our electronic communication.

著者

太刀川 平治

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.48, no.476, pp.205-206, 1928 (Released:2013-05-20)

著者

太刀川 平治 安藏 彌輔

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.43, no.414, pp.5-32, 1923 (Released:2008-11-20)

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本篇は筆者が從業せる猪苗代水力電氣會社の送電線路運用の實績并に維持状態を研究的に記述せるものなり、此送電線路は云ふ迄もなく我國に於て目下運用されつゝある送電線路中最高電壓最長距離のものなれば、此送電上の記録は他の送電事業の爲め良好なる參考資料となるべし、本篇の内容は先づ送電線路施設の梗概に始まりて、此等施設に對し其後の經驗に基きて改修な施せる諸點を指摘し、次に送電能力、電力需要増加の趨勢、送電線路運用上の諸經驗等た述べ、過去八ヶ年に渉れる期間に於ける送電線事故中其代表的のものを列擧して故障の種類の如何なるものなるかな示し、更に全體の送電線路を細大となく統計分類して示ぜり、次に雷雨の觀測並に碍子の故障と氣温との間の關係を擧げ、送電線路の維持に關しては不良碍子の研究發表な後日に讓り不良碍子の檢出方法及び取換作業并に碍子補充方法な述べ、更に鐵塔、地線并に木柱等の減損に關して示す所あり、最後に送電線路の諸經費な計上して本篇な結べり。

著者

太刀川 平治

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.48, no.477, pp.361-373, 1928 (Released:2008-11-20)

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地表並に地表に近き部分に於ける温度の變化-地下約十米突に於ては全く太陽熱の影響なかるべし-深井の温度-普通地方に於ては地下約三十米突を増す毎に温度攝氏一度を上昇すべし-「マグマ」の有する熱勢力-地下に在る自然の蒸汽利用-自然蒸汽抽出地點選定上の注意-海抜標高約一千米突以下の火山地帶に於て寄生火山の麓、火口瀬、爆裂又は噴汽孔の舊跡、斷層、溪谷等の地殼に弱點を有する部分を檢討するを可とす-富士山の弱線-地下水の影響-自然噴汽孔並に温泉等との關係-衛生温泉浴場と地熱發電所との協同計晝-自然蒸汽中に含有する礦物の分離-地熱發電所の實際的効用-發電用原動力以外の自然蒸汽利用方法の實例。

著者

宮嵜 悟 石井 勝 馬場 吉弘

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.5, pp.544-550, 2005 (Released:2005-08-01)

参考文献数

17

被引用文献数

2 1

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A lightning return stroke model is indispensable in calculating electromagnetic field associated with a return stroke. A lot of return stroke models have been proposed, however, no model has ever succeeded in reproducing all the features of typical electromagnetic field waveforms at various distances. In this paper, two return stroke models are proposed. One is a Transmission-Line type model, and the other is modification of Diendorfer-Uman model. These models successfully reproduce all the features of typical electromagnetic field observed on ground.