著者

Mitsuteru Sato Yukihiro Takahashi Makoto Suzuki Atsushi Yamazaki Tomoo Ushio

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.131, no.12, pp.1000-1005, 2011-12-01 (Released:2011-12-01)

参考文献数

15

被引用文献数

6 10

---

Six-channel spectrophotometers (PH) are the science instruments of JEM-GLIMS to measure absolute intensity of the emission originated from lightning discharges and upper atmospheric transient luminous events (TLEs). PH unit-1 (PH-U1) consists of four spectrophotometer channels named from PH1 to PH4, while PH unit-2 (PH-U2) two spectrophotometer channels named PH5 and PH6. Optical filters of these spectrophotometers are selected to detect TLE emission lines of N2 1PG, N2 2PG, N2+ 1NG, and N2 LBH. Since the bandwidth of the optical filter of PH2, 3, 5, and 6 is 10 nm and since PH1 measures NUV emission, photomultiplier tubes with high-voltage converters are used as a photon detector. To the contrary, PH4 uses a photodiode as a photon detector because the pass-band of the optical filter is enough wide to detect transient optical emission. Though PH does not equip spatial resolution, it can acquire light curve data with a high time resolution of 50 μs with a 12-bit resolution. Thus, the combinational analysis of PH data and Lightning and Sprite Imager (LSI) data, it is possible to clarify the relationship between TLEs and their parent lightning discharges, the occurrence condition of TLEs, and the energy of the electrons which excite TLE emission.

著者

山下 勝己 島袋 敦 Mohammaf R. Asharif

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.121, no.11, pp.1734-1739, 2001-11-01 (Released:2008-12-19)

参考文献数

8

被引用文献数

1

---

In the echo cancellation, the double-talk situation when both the near-end signal and far-end signal are presented degrades the performance of echo cancellation with the LMS or the NLMS algorithms. In order to obtain an acceptable performance even in the presence of the double-talk, the authors proposed the expanded correlation least mean squares (ECLMS) algorithm but this algorithm does not give a fast conver-gence characteristics still. The purpose of this paper is to derive an orthogonal ECLMS algorithm with the lattice strucure in order to speed up the convergence characteristics and to reduce the computational load for the adaptation. The validity of this algorithm is evaluated by computer simulations in the echo cancelling problem.

著者

林 昭徳

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.52, no.532, pp.891-902, 1932-11-10 (Released:2008-11-20)

著者

山根 幸知

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.41, no.395, pp.411-432, 1921 (Released:2008-11-20)

---

叙説に於て歐米に於ける自働電話交換機發達の状況並に其の種類に就て概説し現今實用せらるゝ自働電話交換機がストロージヤー式及ウエスターン、エレクトリツク會社のロータリー式、同パネル型スヰツチ式の三種にして前二者に生として二三千名の加入者を有する中小都市に適し後者ば大都市に適するものなることを叙述し。 本論に於てパネル型スヰツチの働作の詳細な説明する爲め先づウェスターン、エレクトリツク會社が自働電話交換機を完成するが爲め其各部に就て研究の結果先づ半機械式交換機の數種を設計實用したるより全機械式の内容な解説するに便なる爲め専ら半機械式交換磯の詳細を(一)交換機座席構造の概要、(二)一般接續の順序、(三)各部機械の説明、(四)諸回路の働作み數項に分ちて説明したる後全機械式交換機の概要な述べ。 結論に於て自働交換機と手働交換機のサービスに與ふる影響及優劣並に經濟上の比較を實例を擧げて説明したるものなり。

著者

回陽 博史

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.100, no.11, pp.997-1000, 1980-11-20 (Released:2008-04-17)

参考文献数

9

著者

田中 小三郎

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.81, no.874, pp.1114-1122, 1961-07-01 (Released:2008-11-20)

参考文献数

3

著者

青木 音次郎

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.51, no.513, pp.216-224, 1931-04-10 (Released:2008-11-20)

参考文献数

2

---

本文は電車線の斷線,摩耗及び罅裂の状態を檢討し併せて各種材質の耐久力及び壽命に就き論述す。

著者

Rikito Okamoto Shizuka Bando Akio Nozawa

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.8, pp.1142-1148, 2016-08-01 (Released:2016-08-01)

参考文献数

40

被引用文献数

2

---

There have been a number of investigations into image recognition and the assessment of human physiological states using infrared thermography. Assessing a human's physiological state by infrared thermography typically exploits the skin temperature of the nasal region and forehead, whereas other parts of the face are less frequently used. The present study has developed a method of analyzing facial thermal images (FTIs) by independent component analysis (ICA), a type of blind signal processing (BSP). ICA is a well-known statistical analysis tool that estimates the original source signal from observed mixture signals. When applied to thermal images, ICA is predicted to extract blind signals such as those from other parts of the face. In this study, the authors use ICA to conduct BSP on a series of FTIs. The extracted independent components are shown to represent temperature fluctuations from the opening and closing of the eyes, respiration, truncal sites such as the cheeks and forehead, and possibility of sympathetic nervous system activity. The FTIs reconstructed after the removal of artifacts indicate the local features that the blind signal cannot extract from the original FTIs.

著者

高橋 徹 田島 欣朗 白根 康次 松本 直樹

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.1, pp.167-168, 1994-12-20 (Released:2008-12-19)

参考文献数

2

著者

非線形制御系設計手法のアルゴリズム調査専門委員会

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.106, no.9, pp.910-910, 1986-09-20 (Released:2008-04-17)

著者

赤崎 勇 原 徹

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.90, no.2, pp.231-236, 1970-02-20 (Released:2008-04-17)

参考文献数

31

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.134, no.9, pp.NL9_3-NL9_3, 2014 (Released:2014-09-01)

著者

加藤 俊顕 金子 俊郎

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.135, no.3, pp.151-153, 2015 (Released:2015-03-01)

参考文献数

13

---

1.はじめに 炭素原子1層の厚みを持つ2次元シート材料であるグラフェンは高いキャリア移動度,機械的柔軟性,および光透過率を合わせ持つ究極のナノ材料として,透明電極,太陽電池,各種センサなどさまざまな分野への応用が期待されている。これらの応用開発を進める上で最も重要な課題の

著者

加藤 義基 平井 義和 亀井 謙一郎 土屋 智由 田畑 修

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.136, no.6, pp.229-236, 2016-06-01 (Released:2016-06-01)

参考文献数

34

---

In vitro cell-based assay with human cells is getting attention since the accuracy of preclinical predictions of drug responses should be improved to reducing costly failures in clinical trials. In order to generate reliable predictions, we present a micro-engineered biomimetic systems “Body-on-a-Chip”, to investigate the effects of drugs/metabolites on various organs by assembling a closed-loop medium circulation system on one microfluidic device. For three-dimensional (3-D) polymeric device fabrication, an advanced 3-D lithography with the process optimization method is applied to improve the current soft-lithography technique. Our Body-on-a-Chip is successfully applied to evaluate the effect of an anti-cancer drug (doxorubicin) on cell survival of human heart and liver cells.

著者

松山 智恵子 中島 豊四郎 石井 直宏

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.124, no.12, pp.2482-2488, 2004 (Released:2005-03-01)

参考文献数

25

被引用文献数

2 2

---

In general, mathematical subjects are used for programming education in universities. In this case, many students lose the interest in the programming because the students have the preconception that is difficult to program by using the mathematical expressions. Especially beginners of the programming are a tendency to lose the interest. Therefore it is pointed out to use the subjects which do not need mathematical knowledge as much as possible. In this paper the authors have tried to make animation that are generated by programs instead of the mathematical subjects in a beginners’ programming class using C language used in a wide-ranging field. The authors discuss about improvements of the interest of students for programming by the try that is to make animation by programs in a programming class and refer to its effects.

著者

河野 毅 田村 信介

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.105, no.6, pp.541-548, 1985-06-20 (Released:2008-04-17)

参考文献数

28

著者

舩橋 誠壽 宮岡 伸一郎

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.107, no.5, pp.434-437, 1987-05-20 (Released:2008-04-17)

参考文献数

13

著者

矢部 正行 井手口 哲夫 朴 美娘 厚井 裕司 岡崎 直宣 白鳥 則郎

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.120, no.5, pp.731-739, 2000-05-01 (Released:2008-12-19)

参考文献数

17

---

In real time communications on LAN such as FDDI utilizing the synchronous class of Timed Token Protocol (TTP), there exists a problem that the transmission delay time of synchronous data with Poisson arrivals at LAN nodes from upper layer largely increase in the range that the average load of synchronous data is close to the synchronous bandwidth. It is caused by the fact that TTP has not a function to process excess data that arrive at LAN nodes earlier than the timing determined with pre-assigned synchronous bandwidth In this paper, in order to solve the problem, we propose another data transfer protocol “Advanced Timed Token Protocol (ATTP)” of which data transfer mechanism is modified from TTP and improves the transmission delay time of synchronous data including above mentioned excess data by rotating token more quickly on LAN than TTP. Furthermore we show the effectiveness of the protocol by simulations on the model of time critical communication for manufacturing control system.

著者

安井 学 角嶋 邦之 平林 康男 三田 信 藤田 博之

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.123, no.11, pp.477-482, 2003 (Released:2004-02-01)

参考文献数

8

被引用文献数

1 1

---

This paper deals with the new method that makes micro-holes with electrodeposition photoresist (EDPR) as a sacrificial layer. The EDPR was deposited on a silicon-mold made by ICP-RIE. Ni film was plated on a silicon-mold covered with EDPR. Etched through a gap between a silicon-mold and the Ni film, the Ni film came off from the silicon-mold. As a result, we could make Ni films that have micro hole of 9.2µm in diameter, and 56µm in depth on an experimental basis, and verified the silicon-mold that lateral faces of columns did not bare scratch marks. Moreover, the circularity roundness was able to fill 1.5µm which was the specification of the printer nozzle.

著者

釜谷 博行 阿部 健一

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.122, no.7, pp.1186-1193, 2002-07-01 (Released:2008-12-19)

参考文献数

22

---

The most widely used reinforcement learning (RL) algorithms are limited to Markovian environments. To handle larger scale partially observable Markov decision processes, we propose a new on-line hierarchical RL algorithm, which is called Switching Q-learning (SQ-learning). The basic idea of SQ-learning is that non-Markovian tasks can be automatically decomposed into subtasks solvable by multiple policies, without any other information leading to good subgoals. To deal with such decomposition, SQ-learning employs ordered sequences of Q modules in which each module discovers a local control policy based on Sarsa (λ). Furthermore, a hierarchical structure learning automaton is used which finds appropriate subgoal sequences according to LR-I algorithm. The results of extensive simulations demonstrate the effectiveness of SQ-learning.