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1. Modeling the Behaviors of Participants in Meetings for Decision Making Using OpenPose

Author

Watanabe, Eiji, Ozeki, Takashi, Kohama, Takeshi, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Auer, Michael E., editor, Hortsch, Hanno, editor, and Sethakul, Panarit, editor

Published
2020
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2. Modeling of Non-verbal Behaviors of Students in Cooperative Learning by Using OpenPose

Author

Watanabe, Eiji, Ozeki, Takashi, Kohama, Takeshi, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Nakanishi, Hideyuki, editor, Egi, Hironori, editor, Chounta, Irene-Angelica, editor, Takada, Hideyuki, editor, Ichimura, Satoshi, editor, and Hoppe, Ulrich, editor

Published
2019
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3. Analysis of Holistic Interactions Between Lecturers and Students in Lectures

Author

Watanabe, Eiji, Ozeki, Takashi, Kohama, Takeshi, Hutchison, David, Editorial Board Member, Kanade, Takeo, Editorial Board Member, Kittler, Josef, Editorial Board Member, Kleinberg, Jon M., Editorial Board Member, Mattern, Friedemann, Editorial Board Member, Mitchell, John C., Editorial Board Member, Naor, Moni, Editorial Board Member, Pandu Rangan, C., Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Terzopoulos, Demetri, Editorial Board Member, Tygar, Doug, Editorial Board Member, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Isotani, Seiji, editor, Millán, Eva, editor, Ogan, Amy, editor, Hastings, Peter, editor, McLaren, Bruce, editor, and Luckin, Rose, editor

Published
2019
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4. Analysis of Behaviors of Participants in Meetings

Author

Watanabe, Eiji, Ozeki, Takashi, Kohama, Takeshi, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Auer, Michael E., editor, Guralnick, David, editor, and Simonics, Istvan, editor

Published
2018
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6. Analysis of Non-verbal Behaviors by Students in Cooperative Learning

Author

Watanabe, Eiji, Ozeki, Takashi, Kohama, Takeshi, Diniz Junqueira Barbosa, Simone, Series editor, Chen, Phoebe, Series editor, Du, Xiaoyong, Series editor, Filipe, Joaquim, Series editor, Kara, Orhun, Series editor, Kotenko, Igor, Series editor, Liu, Ting, Series editor, Sivalingam, Krishna M., Series editor, Washio, Takashi, Series editor, Yoshino, Takashi, editor, Chen, Gwo-Dong, editor, Zurita, Gustavo, editor, Yuizono, Takaya, editor, Inoue, Tomoo, editor, and Baloian, Nelson, editor

Published
2016
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7. Intermediate-temperature proton conductivity of Li+/H+ ion-exchanged material (Li,H)3.5Zn0.25GeO4.

Author

Matsui, Toshiaki, Ozeki, Takashi, Miyazaki, Kazunari, Nagasaka, Sadahiro, Muroyama, Hiroki, Imagawa, Kenichi, Okada, Yoshimi, and Eguchi, Koichi

Abstract

For decades, much effort has been devoted to developing proton conductors applicable to electrochemical devices at intermediate temperatures. However, promising materials that possess sufficient conductivity have not been realized yet. This study demonstrates the development of novel proton conductors that are operative at intermediate temperatures, especially 300–400 °C, through the simple ion-exchange method. The Li+/H+ ion-exchange process was conducted for Li14Zn(GeO4)4, one of the members of lithium super ionic conductors (LISICONs), in non-aqueous solutions. The chemical formula of the resultant sample was determined as Li3.13H0.37Zn0.25GeO4 from instrumental analyses. The electrical conductivity of this material was evaluated to be 87.0 mS cm−1, 39.0 mS cm−1, and 5.5 mS cm−1 at 400 °C, 300 °C, and 200 °C, respectively, in 10% H2O–90% N2. Furthermore, the main charge carrier in this electrolyte was identified as a proton from the H/D isotopic exchange study. These findings open up the possibility of realizing new electrochemical devices that are operative at 200–400 °C. [ABSTRACT FROM AUTHOR]

Published
2023
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16. Electrochemical Characteristics of SOFC Anodes Operated at High Fuel Utilization

Author

Matsui, Toshiaki, Fujinaga, Tomoki, Ozeki, Takashi, Shimizu, Ritsuki, Muroyama, Hiroki, and Eguchi, Koichi

Abstract

High energy conversion efficiency in solid oxide fuel cell (SOFC) systems can be achieved by improving the fuel utilization. However, when the SOFCs are operated under high fuel utilization, the downstream part of the anode is exposed to high steam concentration and hence high P(O2) atmosphere. This has a negative impact on the stability of Ni-based cermet anodes. At this stage, no reports dealt with the degradation phenomena of the anode under such severe conditions. In this study, we aimed to clarify degradation phenomena at the downstream part of practical cells operated at high fuel utilizations by using bottom cells. The change in electrochemical properties of single cells was monitored during discharge operation with supplying fuel gases that simulated severe conditions.

Published
2021
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17. Battery Charge Cycle Planning based on Uncertain Photovoltaic Power Prediction Towards Minimization of Reserve Generating Capacity

Author

Tomonori Sadamoto, Taisuke Masuta, Takayuki Ishizaki, Yuzuru Ueda, Masakazu Koike, Ozeki Takashi, and Jun-ichi Imura

Subjects
Engineering, Battery charge, Photovoltaic power generation, business.industry, Photovoltaic system, Energy Engineering and Power Technology, Minification, Electrical and Electronic Engineering, Generating capacity, business, Power (physics), Reliability engineering
Published
2014

21. Interval Quadratic Programming for Day-Ahead Dispatch of Uncertain Predicted Demand

Author

Ishizaki, Takayuki, Koike, Masakazu, Ramdani, Nacim, Ueda, Yuzuru, Masuta, Taisuke, Oozeki, Takashi, Ozeki, Takashi, Sadamoto, Tomonori, Imura, Jun-Ichi, Tokyo Institute of Technology [Tokyo] (TITECH), Laboratoire pluridisciplinaire de recherche en ingénierie des systèmes, mécanique et énergétique (PRISME), Université d'Orléans (UO)-Institut National des Sciences Appliquées - Centre Val de Loire (INSA CVL), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Department of Mechanical and Environmental Informatics,Graduate School of Information Science and Engineering, National Institute of Advanced Industrial Science and Technology (AIST), and Ramdani, Nacim

Subjects
[INFO.INFO-AU]Computer Science [cs]/Automatic Control Engineering, [INFO.INFO-AU] Computer Science [cs]/Automatic Control Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2016

24. Planning of Optimal Daily Power Generation Tolerating Prediction Uncertainty of Demand and Photovoltaics

Author

Tomonori Sadamoto, Nacim Ramdani, Taisuke Masuta, Yuzuru Ueda, Ozeki Takashi, Jun-ichi Imura, Masakazu Koike, Takayuki Ishizaki, Department of Mechanical and Environmental Informatics,Graduate School of Information Science and Engineering, Tokyo Institute of Technology [Tokyo] (TITECH), National Institute of Advanced Industrial Science and Technology (AIST), Laboratoire pluridisciplinaire de recherche en ingénierie des systèmes, mécanique et énergétique (PRISME), Université d'Orléans (UO)-Institut National des Sciences Appliquées - Centre Val de Loire (INSA CVL), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), and Ramdani, Nacim

Subjects
0209 industrial biotechnology, Engineering, Mathematical optimization, business.industry, 020209 energy, Photovoltaic system, 02 engineering and technology, Demand forecasting, 7. Clean energy, Energy storage, Renewable energy, Electric power system, 020901 industrial engineering & automation, Electricity generation, Photovoltaics, [INFO.INFO-AU]Computer Science [cs]/Automatic Control Engineering, 0202 electrical engineering, electronic engineering, information engineering, Quadratic programming, business, [INFO.INFO-AU] Computer Science [cs]/Automatic Control Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

The concern with renewable energy has been growing. Large-scale installation of photovoltaic (PV) generation and electricity storage is expected to be installed into the power system in Japan. In this situation, we need to keep supply-demand balance by systematically using not only traditional power generation systems but also the PV generation and storage equipment. Towards this balancing, a number of prediction methods for PV generation and demand have been developed in literature. However, prediction-based balancing is not necessarily easy. This is because the prediction of PV generation and the demand forecasting inevitably includes some uncertainty. Against this background, we formulate a problem to plan battery charge pattern while minimizing the fuel cost of generators with explicit consideration of prediction uncertainty. In this problem, given as interval quadratic programming, the prediction uncertainty is described as a parameter in constraint condition. Furthermore, we propose a method to find a solution to this problem from the viewpoint of monotonicity analysis. Finally, by numerical analysis based on this problem and its solution method, we discuss the relation between the minimal regulating capacity and the required battery charge/discharge pattern to tolerate a given amount of prediction uncertainty.

Published
2014

25. Minimizing mismatch loss in BIPV system by reconnection

Author

Hideaki Obane, Yamada Takao, Keiichi Okajima, Ozeki Takashi, and Takahumi Ishi

Subjects
Building management system, business.industry, Computer science, Photovoltaic system, Electrical engineering, Photovoltaic mounting system, Mismatch loss, Physics::Space Physics, Shadow, Grid-connected photovoltaic power system, Electronic engineering, Building-integrated photovoltaics, business, Energy (signal processing)
Abstract

Recently, building-integrated photovoltaic (BIPV) systems have become increasingly popular because they provide increased available space and have great environmental appeal. However, these systems may be adversely affected by shadows of surrounding buildings. In order to reduce the effect of shadows on solar panels, we propose the concept of a PV system with reconnection (smart PV), where PV arrays can be reconnected to minimize the mismatch loss depending on the output of each module measured at regular time intervals. In this study, the effects of minimizing the mismatch loss of a BIPV system by reconnection are evaluated by studying shadow patterns. The PV system with reconnection showed good performance for typical shadow patterns. In the evaluation, the optimized connection is determined by calculating the outputs of several array connection patterns. To analyze the daily impact of the PV system with reconnection, the daily output energy by the BIPV system that is partially shaded by a neighboring building is considered as a case study. The maximum improvement in the daily mismatch loss with the reconnection was 8.1 kWh per day compared with that of conventional array connections. In conclusion, it is shown that the PV system with reconnection shows better performance compared with conventional fixed array connections.

Published
2011

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