電気学会論文誌C(電子・情報・システム部門誌)
Online ISSN : 1348-8155
Print ISSN : 0385-4221
ISSN-L : 0385-4221
139 巻 , 2 号
選択された号の論文の12件中1~12を表示しています
特集:「みえないものをみる」光技術
特集論文
<光工学>
<システム・計測・制御>
論文
<生体医工学・福祉工学>
  • 小林 由弥, 赤尾 旭彦, 白坂 将, 小谷 潔, 神保 泰彦
    2019 年 139 巻 2 号 p. 154-160
    発行日: 2019/02/01
    公開日: 2019/02/01
    ジャーナル 認証あり

    It is important to understand the relationship between spatiotemporal patterns of neuronal populations and information processing of the brain for medical and engineering purposes. Though, there are some methods to record neuronal population, only the information about firing rate can be obtained from those methods basically. Therefore, some methods are suggested to estimate the internal state of the neuronal population from the information about firing. In this research, we investigated the relationship between firing rates and responses to external electrical stimuli by using neuronal population models. We developed a method to manipulate neuronal parameters to make neuronal populations exhibit different dynamical properties while keeping firing rates intact. As a result, we found that there are some cases even though they share the same firing rate, the internal states are different. This result suggests that there is some information that cannot be obtained by using only the information about firing rates.

<システム・計測・制御>
  • 安並 一浩, 矢壷 修, 鷲尾 隆
    2019 年 139 巻 2 号 p. 161-169
    発行日: 2019/02/01
    公開日: 2019/02/01
    ジャーナル 認証あり

    There is a growing need to use photovoltaic (PV) technology to mitigate global warming and the depletion of fossil fuels. However, the high network penetration of PVs potentially lessen the stability and the reliability of electrical power systems in various ways. Under its high network penetration, monitoring of the unmeasurable power outputs of PVs is needed for the proper operations of an electrical power system. To suffice this need, a novel method was proposed to estimate the PV power output of the system using the measured power flow and sampled PV power output data in our previous work. However, the large estimation error of the PV power output caused by the wrong estimation of a parameter occurs occasionally in the proposed method. Thus, in this paper, we improved our proposed method by calculating the average value of the estimated parameter and confirmed its accuracy enhancement using observed data from The Kansai Electric Power Co., Inc.

<メディア情報,ユーザ・インタフェース>
  • L Ernesto Dominguez-Rios, Takayoshi Kitamura, Tomoko Izumi, Yoshio Nak ...
    2019 年 139 巻 2 号 p. 170-179
    発行日: 2019/02/01
    公開日: 2019/02/01
    ジャーナル 認証あり

    In recent years, there is an increment in the development of applications that have the purpose of supporting people in diverse situations. Our research focus is on the development of an application that will contribute to an effective community self-relief in case of disaster. In this specific area, software developers should propose easy to use and easy to understand interfaces. For that reason, we propose the design of a front-end application that uses animated and non-animated pictograms as graphical communication for an understandable interface. The animation of the pictograms was possible by the addition of simple animation patterns. In this study, we included the examination of the understanding effect of each pictogram by subjects with different cultural backgrounds. Additionally, we performed a comparison between the animated and non-animated pictograms. With this examination, we intend to identify a possible increment or change in each pictograms' degree of understanding. After the validation process, it is possible to determine the viability of using these pictograms in our user-front application.

研究開発レター
<情報通信工学>
<音声画像処理・認識>
部門記事
 
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