著者

大内 二郎 伊藤 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.118, no.7-8, pp.1082-1088, 1998-07-01 (Released:2009-10-02)

参考文献数

8

---

The ground area of print pattern is important for the reduction of EMI. But until now the ground area of the print pattern was not quantitativery examined. In this report we present three parameters relating to ground/power-source patterns which are important for the EMI reduction. One of them is a “BETA” ratio which is defined as the ground pattern ratio to the print board size. Our experiment shows that these ratios are greatly affect to the radiation noise.So we developed the CAD, which is useful for print pattern design, to caluculate these parameters.

著者

長田 若奈 酒向 慎司 北村 正

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.4, pp.581-586, 2014 (Released:2014-04-01)

参考文献数

13

---

Though violin has been widely used in classical music, violin performance involves a problem that how to determine fingering from a musical score. In fingering determination, beginners often consider the ease for playing, but intermediates take account of expressiveness as well according to their skill level grown. Therefore, we aim to develop an automatic fingering estimation method to assist both beginners and intermediates in finding their appropriate fingering. The problem of fingering estimation is basically to find a most probable state sequence, where a state represents a pattern of left hand corresponding to a musical note from the score. We define the state of left hand as a combination of four parameters. The appropriateness of states is locally defined as a state transition cost and pressing string cost. The problem is how to set the model parameters to adjust the desired skill level. We focused on that the note length affects the difference in violin fingering. In our method, appropriate fingering according to the skill level can be estimated by changing relation between the note length and expressiveness. By comparing estimated fingering with textbook's fingering and subjective evaluation, we confirmed that our method can estimate appropriate fingering for a desired skill level.

著者

飯野 秀之

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.113, no.9, pp.664-668, 1993-09-20 (Released:2008-12-19)

参考文献数

2

著者

水田 秀行 恐神 貴行 鈴村 豊太郎 井手 剛

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.9, pp.1632-1635, 2013-09-01 (Released:2013-09-01)

参考文献数

7

---

We evaluate the effectiveness of real planning and control about the traffic in Hiroshima city by simulating the traffic flows in the entire city. Our massively parallel simulation of minute behavior of individual drivers is made credible by the use of novel techniques for learning the parameters of simulation models from available data.

著者

伊藤 京子 平野 剛 能任 一文 西田 正吾 大築 立志

出版者

The Institute of Electrical Engineers of Japan

雑誌

電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and Systems Society (ISSN:03854221)

巻号頁・発行日

vol.131, no.10, pp.1775-1785, 2011-10-01

被引用文献数

1

---

Two experimental studies have been conducted in order to propose practice indexes for the improvement of the embouchure of French horn players, two experimental studies have been conducted. In both studies, the same task was performed by advanced and amateur French horn players. The first study investigated the activity, while performing the above-mentioned task, of the 5 facial muscles (levator labii superioris, zygomaticus major, depressor anguli oris, depressor labii inferioris, and risorius muscles) on the right side of the face by surface electromyography, and the facial movement on the left side of the face by attaching two markers above each muscle and using two high-speed cameras simultaneously. The results of the study showed that it is possible for the four markers around the lower lip to practice indexes. The second study evaluated whether the above-mentioned markers are appropriate as practice indexes using a 3-D tracking system and questionnaires. The results showed that both the advanced and the amateur players assessed that the markers were suitable as practice indexes for improving the embouchure. This set of approaches could be useful for selecting practice indexes and developing scientific practice methods not only for the French horn but also for other instruments and other fields.

著者

伊藤 京子 平野 剛 能任 一文 西田 正吾 大築 立志

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.131, no.10, pp.1775-1785, 2011-10-01 (Released:2011-10-01)

参考文献数

38

---

Two experimental studies have been conducted in order to propose practice indexes for the improvement of the embouchure of French horn players, two experimental studies have been conducted. In both studies, the same task was performed by advanced and amateur French horn players. The first study investigated the activity, while performing the above-mentioned task, of the 5 facial muscles (levator labii superioris, zygomaticus major, depressor anguli oris, depressor labii inferioris, and risorius muscles) on the right side of the face by surface electromyography, and the facial movement on the left side of the face by attaching two markers above each muscle and using two high-speed cameras simultaneously. The results of the study showed that it is possible for the four markers around the lower lip to practice indexes. The second study evaluated whether the above-mentioned markers are appropriate as practice indexes using a 3-D tracking system and questionnaires. The results showed that both the advanced and the amateur players assessed that the markers were suitable as practice indexes for improving the embouchure. This set of approaches could be useful for selecting practice indexes and developing scientific practice methods not only for the French horn but also for other instruments and other fields.

著者

飯坂 達也 神通川 亨 近藤 英幸 中西 要祐 福山 良和 森 啓之

出版者

The Institute of Electrical Engineers of Japan

雑誌

電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and Systems Society (ISSN:03854221)

巻号頁・発行日

vol.131, no.10, pp.1672-1678, 2011-10-01

被引用文献数

2

---

This paper describes a wind power forecasting method and its confidence interval estimation. Recently, flat control of wind power generators by various batteries is required. For the flat control, accurate wind power forecasts and their error confidence intervals are needed. In this paper, wind speed forecasts are calculated by regression models using GPV (Grid Point Vale) weather forecasts. The forecasts are adjusted by the fuzzy inference using the latest errors. The wind power forecasts are translated from the wind speed forecasts using two power-curves. The power-curves are selected or combined by fuzzy inference depending on wind direction. The error confidence interval models are generated for each forecasting target time. Each confidence interval is combined by the other fuzzy inference.<br>The proposed methods are applied to actual wind power generators, and found that forecasting errors are better than the conventional methods. The almost all of forecasts can be within error confidence intervals estimated by the proposed method. The results show the effectiveness of the proposed methods.

著者

岩井 儀雄 青木 康洋 石黒 浩

出版者

The Institute of Electrical Engineers of Japan

雑誌

電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and System Society (ISSN:03854221)

巻号頁・発行日

vol.130, no.4, pp.546-556, 2010-04-01

被引用文献数

3 1

---

In this paper, we propose a generic framework for detecting suspicious actions with mixture distributions of action primitives, of which collection represents human actions. The framework is based on Bayesian approach and the calculation is performed by Sequential Monte Carlo method, also known as Particle filter. Sequential Monte Carlo is used to approximate the distributions for fast calculation, but it tends to converge one local minimum. We solve that problem by using mixture distributions of action primitives. By this approach, the system can recognize people's actions as whether suspicious actions or not.

著者

松坂 晃太郎 隈元 昭

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.114, no.11, pp.1122-1127, 1994-10-20 (Released:2008-12-19)

参考文献数

16

---

Any recent application of an expert system requires an effective way to build a very large-scale knowledge base. An on-line massive document, such as a corpus, has a potential possibility to be utilized in automatically preparing such knowledge base. Provided that a natural language interface is available, a user can inquire to the acquired knowledge for a specific topic he wants to know in an interactive way.This paper first makes investigation on semantic structures required in such a corpus oriented knowledge inquiry system focusing on plan-structure and LFG representation. It then proposes a new knowledge representation framework called a PFT-network. This network was introduced to effectively acquire knowledge from corpus with reduced domain knowledge for both the input corpus and user's utterance. Experimental results of extracting knowledge are given and it is demonstrated that the presented approach suggests the feasibility in knowledge acquisition in view of understanding input sentences so that inter-relationship of knowledge is reflected in the obtained knowledge.

著者

小柴 等 石垣 司 竹中 毅 櫻井 瑛一 本村 陽一

出版者

The Institute of Electrical Engineers of Japan

雑誌

電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and Systems Society (ISSN:03854221)

巻号頁・発行日

vol.133, no.9, pp.1787-1795, 2013-09-01

---

It becomes increasingly important for service industries to understand customer behavior using large-scale data such as POS data. However, limitations exist in a customer model constructed on the basis of such behavioral data alone. This paper presents how we can construct a customer model on the basis of both large-scale purchase data and lifestyle survey data. It proposes a method that reveals the connection between lifestyle and behavior by deducing lifestyle from behavioral data using Random Forests, a machine learning algorithm. Then, It applies the proposed method to an actual mass merchandizers using questionnaires on lifestyle collected and the customer behavioral data (ID-POS Data). It thereby demonstrates the effectiveness of the proposed method and its possible use in supporting managerial decision-making on critical issues such as product selection.

著者

兪 文偉 横井 浩史 嘉数 侑昇

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.9, pp.1300-1307, 1997-08-20 (Released:2008-12-19)

参考文献数

14

---

In this paper, we propose the State Grouping scheme for coping with the problem of scaling up the Reinforcement Learning Algorithm to real, large size application. The grouping scheme is based on geographical and trial-error information, and is made up with state generating, state combining, state splitting, state forgetting procedures, with corresponding action selecting module and learning module. Also, we discuss the Labeling Based Evaluation scheme which can evaluate the opportunity of the state-action pair, therefore, use better experience to guide the exploration of the state-space effectively. Incorporating the Labeling Based Evaluation and State Grouping scheme into the Reinforcement Learning Algorithm, we get the approach that can generate organized state space for Reinforcement Learning, and do problem solving as well. We argue that the approach with this kind of ability is necessary for autonomous agent, namely, autonomous agent can not act depending on any pre-defined map, instead, it should search the environment as well as find the optimal problem solution autonomously and simultaneously. By solving the large state-size 3-DOF and 4-link manipulator problem, we show the efficiency of the proposed approach, i.e., the agent can achieve the optimal or sub-optimal path with less memory and less time.

著者

張 〓 小坂 満隆 白肌 邦生 薮谷 隆

出版者

The Institute of Electrical Engineers of Japan

雑誌

電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and Systems Society (ISSN:03854221)

巻号頁・発行日

vol.132, no.6, pp.1035-1040, 2012-06-01

参考文献数

10

被引用文献数

4 5

---

This paper proposes a new framework for B to B collaboration process based on a concept of service. Service value, which gives users satisfaction for provided services, depends on the situation, user characteristics, and user objectives in seeking the service. Vargo proposed Service Dominant Logic (SDL), which determines service value according to "value in use". This concept illustrates the importance of the relationship between the service itself and its situation. This relationship is analogous to electro-magnetic field theory in physics. We developed the concept of service fields to create service value based on an analogy of the electro-magnetic field. By applying this concept to B to B collaboration, a model of service value co-creation in the collaboration can be formulated. Then, the collaboration can be described by 4 steps of KIKI model (Knowledge sharing related to service system, Identification of service field, Knowledge creation for new service idea, Implementation of service idea). As its application to B to B collaboration, the energy saving service business is reported to demonstrate the validity of the proposed collaboration model. This concept can be applied to make a collaboration process effective.

著者

山崎 高弘 常盤 欣一朗

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.132, no.9, pp.1524-1532, 2012-09-01 (Released:2012-09-01)

参考文献数

10

---

This paper describes a method of readability assessment for web documents. Readability is the ease in which text can be read and understood. We hypothesize that the readability is determined whether a reader can easily grasp text structures. The impression and the complexity of text are significant factors. We extract the features about impression and complexity from a plain text and additional data such as HTML tags.In order to compare effect of extracting features, we are assessing readability rank by machine learning. We conduct 5-fold cross validation for each domain, and calculate the root mean squared error between the actual rank and the estimated rank. The cross validation experiments confirm that the performance of our method is high measured. It shows effectiveness of extracting features about the impression and the complexity for readability assessment.

著者

高橋 丈博 渋谷 昇 伊藤 健一 濱田 倫一 浅田 和秀

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.10, pp.1181-1188, 1995-09-20 (Released:2008-12-19)

参考文献数

6

---

Noise reduction effect using decoupling capacitor with series resistor was studied. It is well known that the decoupling capacitor is a familiar noise reduction technique on a printed circuit, and its effect is limited at high frequency by some parasitic inductances such as lead, trace and so on. Some capacitors are often connected in parallel for widening its band, but its impedance grows up highly at parallel resonance frequency. In this paper, the effect of the suppression of parallel resonance by decoupling capacitor with resistor is described and the relation between band width and device parameters is shown. The reducion effect is measured and simulated about transmission characteristic and near magnetic field.

著者

松橋 隆治 吉田 好邦 石谷 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.122, no.11, pp.1976-1985, 2002-11-01 (Released:2008-12-19)

参考文献数

9

---

In this article, we investigated possibility to establish a recycling-based industrial system in Japan. For this purpose, a novel mathematical model was first developed for the recycling-based system by expanding input-output analysis. Utilizing this model, we clarified several significant implications on the possibility of the recycling-based system and the prices of recycled goods. Then various recycling technologies were evaluated to clarify how these technologies could contribute to establish the system as well as to mitigate global warming. Next we developed an optimization model of the entire industrial systems in Japan, including conventional and emerging technologies on waste disposal and recycling. Various institutions on the recycling system were investigated utilizing this model. These include prices of recycled goods and tradeoff relationships between promotion of recycling and reduction of CO2 emissions. In particular, evaluated results showed that shadow price of recycled goods did not necessarily become positive. We also proposed a novel institution on the recycling system as “Waste dumping permit” in Japan. In conclusion, we clarified a desirable strategy so as to establish the recycling-based system, as well as to mitigate global warming.

著者

湯浅 将英 斎藤 恵一 武川 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.127, no.11, pp.1865-1870, 2007-11-01 (Released:2007-11-01)

参考文献数

20

被引用文献数

2 3

---

In this paper, we describe that brain activities associated with emoticons by using fMRI. In communication over a computer network, we use abstract faces such as computer graphics (CG) avatars and emoticons. These faces convey users' emotions and enrich their communications. However, the manner in which these faces influence the mental process is as yet unknown. The human brain may perceive the abstract face in an entirely different manner, depending on its level of reality. We conducted an experiment using fMRI in order to investigate the effects of emoticons. The results show that right inferior frontal gyrus, which associated with nonverbal communication, is activated by emoticons. Since the emoticons were created to reflect the real human facial expressions as accurately as possible, we believed that they would activate the right fusiform gyrus. However, this region was not found to be activated during the experiment. This finding is useful in understanding how abstract faces affect our behaviors and decision-making in communication over a computer network.

著者

関根 好文

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.3, pp.494-501, 2013-03-01 (Released:2013-03-01)

参考文献数

19

被引用文献数

2 2

---

Nonlinear electronic circuit is widely used in many fields of electronic devices. The importance of nonlinear electronic circuit is increasingly recognized with improvement in the speed and precision of electronic devices, and the development and expansion of use. Here, I give a trend of nonlinear electronic circuit which is introduced for the purpose of contributing to development of a nonlinear electronic circuit from a viewpoint of analog electronic circuit technology including new fields, such as chaos, neuro, and a neural network. From now on, nonlinear electronic circuit will become more important for the electronics, and the circuit technology will be utilized for many fields.

著者

川田 明 上田 浩史 林 重雄 松井 靖雄

出版者

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 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and System Society (ISSN:03854221)

巻号頁・発行日

vol.116, no.11, pp.1259-1266, 1996-10-20

著者

藤 大樹 満倉 靖恵

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.4, pp.722-729, 2013-04-01 (Released:2013-04-01)

参考文献数

25

---

In this paper, we propose a model-based alignment system using evolutionary computation and particle filter for augmented reality (AR). AR is a technique to overlay useful virtual information on the real world. To realize the AR, alignment between real space and virtual space is a serious problem. In particular, an initial frame alignment for real-time tracking is needed in the prior knowledge based alignment. Therefore, we propose an alignment method using evolutionary computation for the initial frame alignment. In this paper, we use the multiple evolutionary computation methods for designing an effective method of alignment system. Moreover, we conduct tracking of the alignment target using particle filter based on the initial frame alignment results. By using this system, a model-based alignment can be conducted in a non-messy place such as being hard to acquire many feature points.

著者

寺田 賢治 福原 徹

出版者

The Institute of Electrical Engineers of Japan

雑誌

電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and System Society (ISSN:03854221)

巻号頁・発行日

vol.129, no.5, pp.876-884, 2009-05-01

参考文献数

14

被引用文献数

1

---

"AWA ODDRI" dance is one of the traditional dance festival of Tokushima Prefecture in Japan. Basic operation of "AWA ODORI" dance needs harmony of hands and legs, and the rhythm of duple time, but it is not possible that the beginners do these actions completely. We have already developed the method of quantifying evaluation of the skill of "AWA ODORI" dance. But the three dimensional movements are not able to be evaluated by image squences. In this paper, the authors proposed a method of quantifying evaluation of the skill of "AWA ODORI" dance by using the three dimensional data. In this method, the image sequence of dance scenes is obtained by a stereo camera with a simple of structure. The dynamics of motion is detected by three dimensional data calculated by the stereo camera. The input data and model data of excellent dancers are compared. In this paper, we describe the algorithm of quantifying evaluation of the skill using the stereo view and show some experimental results obtained by using a simple experimental system to verify effectiveness of the proposed method.