著者

栗原 さえ子 中野 博民 難波江 章

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.114, no.11, pp.1179-1180, 1994-10-20 (Released:2008-12-19)

参考文献数

2

著者

大越 孝敬

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.97, no.11, pp.939-943, 1977-11-20 (Released:2008-04-17)

参考文献数

8

著者

宇野 達也 小圷 成一 平田 廣則

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.116, no.10, pp.1183-1187, 1996-09-20 (Released:2008-12-19)

参考文献数

11

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It is difficult to decide the optimal neural network structure for a particular problem. We propose a solution to this problem, a new constructive learning algorithm based on division of a given learning problem. The proposed method first decomposes the original learning problem into small pieces and constructs a set of small networks which independently learn one of decomposed problems. It constructs a large network which learns the given learning problem by combining the small networks in a bottom-up manner. We demonstrate the efficiency of our learning algorithm by applying it to XOR, 3-bits parity, a non-liner function approximation, and two-spirals problem. Experimental results show that our learning algorithm can construct networks which have higher learning convergence rate and better generalization capability within less computation time than the standard back-propagation algorithms.

著者

神谷 昭基 小野 功 小林 重信

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.117, no.7, pp.829-836, 1997-06-20 (Released:2008-12-19)

参考文献数

13

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Start-up scheduling is aimed at minimizing the start-up time while limiting turbine rotor stresses to an acceptable level. This scheduling problem has a wide search space. In order to improve the search efficiency and robustness and to establish an adaptive search model, we propose to integrate evolutionary computation, based on Genetic Algorithms (GA), with reinforcement learning. The strategies with our proposal include: multi-boundary-based enforcement operator and multi-elitist plan. By setting a second boundary, located right outside the existing boundary containing those feasible schedules, we extend our proposed enforcement operator and the conventional elitist plan into the multi-boundary-based enforcement operator and multi-elitist plan. These two strategies work together to focus the search along the boundary, around which the optimal schedule is supposed to exist, so as to increase the search efficiency as well as its robustness. During a search process, GA guides the reinforcement learning to concentrate its learning on those promising areas instead of the entire space. In return, reinforcement learning can generate a good schedule, in the earlier stage of the search process. We obtain encouraging test results. In this paper, we propose the GA-based search model with these strategies and discuss the test results.

著者

宇野 達也 小圷 成一 平田 廣則

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.3, pp.326-332, 1998-03-01 (Released:2008-12-19)

参考文献数

15

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We propose a new ANN learning algorithm based on hierarchical clustering of training data. The proposed algorithm first constructs a tree of sub-learning problems by hiearchically clustering given learning patterns in a bottom-up manner and decides a corresponding network structure. The proposed algorithm trains the whole network giving teacher signals of the original learning problem to the output units, and trains sub-networks giving teacher signals of the divided sub-learning problems to the hidden units simultaneously. The hidden units which learn sub-learning problems become feature detectors, which promote the learning of the original learning problem. We demonstrate the advantages of our learning algorithm by solving N-bits parity problems, a non-liner function approximation, iris classification problem, and two-spirals problem. Experimen-tal results show that our learning algorithm obtains better solutions than the standard back-propagation algorithms and one of constructive algorithms in terms of the learning speed and the convergence rate.

著者

葛西 駿 及川 拓弥 木村 純 小川 弘貴 三島 友義 中村 徹

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌. C (ISSN:03854221)

巻号頁・発行日

vol.136, no.4, pp.444-448, 2016

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This paper demonstrates the impact of tilted Mg ion implantation for the threshold voltage control of GaN MISFETs for the first time. The threshold voltage of the MISFETs by using Mg implantation shifts up to -1 V, whereas that without Mg ion implantation is about -8 V. The GaN MISFET achieved maximum drain current of 165 mA/mm and an extrinsic transconductance of 30 mS/mm. These results indicate a definite availability of our process in normally-off GaN MISFETs for power switching device applications.

著者

小林 隆 薦田 憲久

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.5, pp.1068-1075, 2004 (Released:2004-08-01)

参考文献数

13

被引用文献数

1 4 7

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The traditional business process design methods, in which the usecase is the most typical, have no useful framework to design the activity sequence with. Therefore, the design efficiency and quality vary widely according to the designer’s experience and skill.  In this paper, to solve this problem, we propose the business events and their state transition model (a basic business event model) based on the language/action perspective, which is the result in the cognitive science domain. In the business process design, using this model, we decide event occurrence conditions so that every event synchronizes with each other. We also propose the design pattern to decide the event occurrence condition (a business event improvement strategy). Lastly, we apply the business process design method based on the business event model and the business event improvement strategy to the credit card issue process and estimate its effect.

著者

水谷 芳史

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.125, no.12, pp.785-785, 2005 (Released:2007-02-02)

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本記事に「抄録」はありません。

著者

若林 克也

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.117, no.8, pp.547-547, 1997-07-20 (Released:2008-04-17)

著者

伊藤 亮太 馬杉 正男

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.134, no.3, pp.134-141, 2014-03-01 (Released:2014-03-01)

参考文献数

41

被引用文献数

1 2

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This paper describes an analysis of the effects of transient electromagnetic fields on the growth of a plant. In our experiment, a single transient electromagnetic field, which was radiated from a discharge electrode (2 cm) of a discharge generator, was periodically applied to seeds and seedlings of broccoli (Brassica oleracea var italica) for three weeks. The pulse application cycles were set to 1 day and 3 days with charging voltages of 10 kV and 15 kV. In a growth environment, temperature and humidity were set to 25 (±3) °C and 50 (±10) %, respectively. Light photon at the top of leaf was set to 110 (±30) µmol/m2s and illuminating lamp lighted for 24 hours. Then, we measured the length and chlorophyll density of leaves of the growing plants in each condition. Also, based on measured current that flowed through the discharge electrode, we evaluated the radiated electromagnetic energy level by using an electric dipole model. As a result, we found that samples, which had been applied 10kV/3days and 15kV/3days, became greater than the others by around 30%. Also, the chlorophyll density of 10kV/3days and 15kV/3days became higher than the others.

著者

西嶋 茂宏 秋山 庸子

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.135, no.10, pp.579-582, 2015-10-01 (Released:2015-10-01)

参考文献数

7

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A large amount of radionuclides were spread by the accident of Fukushima Daiichi nuclear power plant in 2011. The situation of surrounding area of nuclear power plant is momentarily changing. In order to consider for decontamination or volume reduction of radioactive wastes, it is necessary taking into account not only the technical needs but also feelings of inhabitants, reduction of environmental load, reduction of the radiation exposure on workers and efficiency and cost of decontamination work. In this paper, the application possibility of superconducting magnetic separation system for decontamination and volume reduction was discussed compared with other technologies from above multidirectional viewpoint.

著者

相原 良太 横山 明彦

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.135, no.3, pp.141-152, 2015 (Released:2015-03-01)

参考文献数

13

被引用文献数

1 3

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In recent years, a large amount of photovoltaic (PV) generations have been installed in power systems. However, the power output from the PVs is random and intermittent in nature. Therefore, the PV generations pose many challenges to the power system operation. To estimate the impact of these issues on the power system operation, we propose optimal weekly demand and supply simulation method considering a large penetration of photovoltaic generations. In this paper, a study for operation scheduling method considering optimal hot reserve capacity is presented. The effectiveness of the proposed method is shown by using Monte Carlo simulation.

著者

中村 光一 河崎 善一郎

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.113, no.8, pp.839-844, 1993-08-20 (Released:2008-12-19)

参考文献数

23

著者

Atsushi Shimada Vincent Charvillat Hajime Nagahara Rin-ichiro Taniguchi

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.133, no.1, pp.142-149, 2013-01-01 (Released:2013-01-01)

参考文献数

9

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Clickable Real World is a new framework to realize an intuitive information search with a mobile terminal. To achieve the goal, we tackle two challenging tasks. One is landmark detection from an observing scene. Our approach detects a landmark based on an image prior. The prior is not given manually. Instead, it is generated automatically from the training samples collected from photo sharing website. Another challenging task is image annotation assisted by geolocation. We use the location of a user who uses a mobile terminal, and geolocation where the training sample images were taken. Two probabilistic models are generated to achieve image annotation. One is image-based labeling which utilizes the co-occurrence between image features and label features. The other is label-based localization which uses the consensus about the label given around the geolocation among photographers. We combine two probabilistic approaches to improve the accuracy of image annotation. We demonstrate this approach for 87 scenes in the world.

著者

松倉 悠

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.6, pp.NL6_3-NL6_3, 2015-06-01 (Released:2015-06-01)

著者

上平 裕太 大山 航 若林 哲史 木村 文隆

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.134, no.12, pp.1809-1816, 2014 (Released:2014-12-01)

参考文献数

15

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This paper proposes a signature verification technique called combined segmentation-verification based on off-line features and on-line features. We use three different off-line feature vectors extracted from full name Japanese signature image and from the sub-images of the first name and the last name. The Mahalanobis distance for each off-line feature vector is calculated for signature verification. The on-line feature based technique employs dynamic programming (DP) matching technique for time series data of the fullname signature and first name and last name. The final decision (verification) is performed by SVM (Support Vector Machine) based on the three Mahalanobis distances and three dissimilarity of the DP matching. In the evaluation test the proposed technique achieved 3.35% EER (Equal Error Rate) with even FRR (False Acceptance Rate) and FAR (False Rejection Rate), which is 3.10% lower than the best EER obtained by the individual technique. This result shows that the proposed combined segmentation-verification approach improves Japanese signature verification accuracy significantly.

著者

綿貫 卓也 野澤 昭雄

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.134, no.10, pp.1551-1556, 2014 (Released:2014-10-01)

参考文献数

12

被引用文献数

2 4

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In this research, mode of viewing, preference, and excitement-calm to TV contents were estimated from the hemodynamics parameter to create the estimation model. As physiology indices, the cardiovascular system was assessed by mean blood pressure (MP), heart rate (HR), stroke volume (SV), cardiac output (CO), and total peripheral resistance (TPR). Comfortable, arousal, vigor, preference and concentration to TV contents were assessed by visual analog scale (VAS) for mental indices. Psychological excitement-calm to TV was assessed by up and down arrow key of a keyboard in real time. Based on the above indices, the estimation model was created by using the neural network. As a conclusion, the distinction rate of the preference and the mode of viewing were each obtained to 83.3% and 75.0% at the maximum. The average error of the excitement-calm was obtained to 17%。

著者

小池 将史 内田 雅文 野澤 昭雄

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.134, no.10, pp.1531-1536, 2014 (Released:2014-10-01)

参考文献数

24

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The aim of this research was development of emotion still camera. Emotion still camera is used to record the image of KANSEI of the photographer at the moment of shooting a photograph. Physiological and psychological measurements of the photographer were performed at the moment of the photography. Three situations where photographer generally took a photograph were defined. The three situations had the time factor, the spatial factor and the psychological factor. Blink and peripheral skin temperature (PST) and heart rate (HR) and pupil diameter were measured with camera operation. KANSEI was evaluated by the physiological - psychological indices.  There was more the number of blinks in the time factor than general number of blinks. The average of PST in the time factor fell in comparison with the usual PST of the photographer. The average of HR in the time factor was increased in comparison with others. It was thought that the result was caused by the sympathicotonia of photographer strained by the time factor.

著者

松瀬 貢規 大西 公平

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.112, no.9, pp.673-673, 1992-09-20 (Released:2008-04-17)

参考文献数

3

著者

西澤 侑吾

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.134, no.3, pp.NL3_3-NL3_5, 2014-03-01 (Released:2014-03-01)

参考文献数

3

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高機能な高温超電導体であるBi系高温超電導ウィスカーを電磁石に応用することができると,省スペース・低コストで且つ強力な電磁石を実現することができる。しかしながら,流すことのできる最大の電流密度が,印加される磁場の角度によって極端に変化してしまうという問題点(Jc - θ依存性)が存在し,この応用の妨げとなっている。本研究では,この問題を解決するためにBi系高温超電導ウィスカーへMgを添加した。これにより,Jc - θ依存性を約1/7へ改善することに成功した。