論文 - 田村 宏樹
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New Active Diode with Bulk Regulation Transistors and Its Application to Integrated Voltage Rectifier Circuit 査読あり
Ryoichi Miyauchi, Koichi Tanno, Hiroki Tamura
International Journal of Electrical and Computer Engineering 9 ( 2 ) 2019年4月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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A Study on Speaker Identification Approach by Feature Matching Algorithm using Pitch and Mel Frequency Cepstral Coefficients 査読あり
Barlian Henryranu Prasetio, Keiko Sakurai, Hiroki Tamura, Koichi Tanno
The 2019InternationalConferenceonARTIFICIALLIFEANDROBOTICS(ICAROB2019) 2019年1月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
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A study of biological signal analysis using CNM 査読あり
Nobuya Takahashi, Kazufumi Kai, Hiroki Tamura
Proceedings of the 24th International Symposium on Artificial Life and Robotics 2019年1月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
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The Actual Car Driving Evaluation System using Combined with Eyeball and Face Angle 査読あり
Keiko Sakurai, Hiroki Tamura, Koichi Tanno, Yukio Hattori
The 2019InternationalConferenceonARTIFICIALLIFEANDROBOTICS(ICAROB2019) 2019年1月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
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A Study on Breathing and Heartbeat Monitoring System during Sleeping using MultiPiezoelectric Elements 査読あり
Praveen Nuwantha Gunaratne, Chika Yoshida, Keiko Sakurai, Hiroki Tamura, Koichi Tanno
The 2019InternationalConferenceonARTIFICIALLIFEANDROBOTICS(ICAROB2019) 2019年1月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
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A study of biological signal analysis using CNM
N. Takahashi, K. Kai, H. Tamura
24th International Symposium on Artificial Life and Robotics 2019年1月
記述言語：日本語 掲載種別：研究論文（学術雑誌）
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Front caster capable of reducing horizontal forces on step climbing 査読あり
Geunho Lee, Masaki Shiraishi, Hiroki Tamura, Kikuhito Kawasue
Proc. 1st Int. Conf. Big Data Analysis 744 233 - 239 2019年
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
© 2019, Springer Nature Singapore Pte Ltd. Obstacles such as ramps, steps and irregular floor surfaces are commonly encountered in homes, offices and other public spaces. These obstacles frequently limit the daily activities of people who use mobility aids. In this paper, a new offsetting mechanism for climbing a step while reducing the required horizontal climbing force and its step-climbing wheel prototype are proposed. Specifically, the proposed wheel allows to integrate into an existing personal assist devices. The proposed step-climbing wheel can help to reduce this limitation. The physical and mental burdens of caregivers and medical staff can also be reduced by making the users of the mechanism more self-sufficient. This paper provides details on this offsetting mechanism and its prototype. The mechanism is analyzed mathematically and its functionality is verified by experiments using a prototype.
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Generalized discriminant methods for improved X-vector back-end based stress speech recognition 査読あり
Prasetio B., Tamura H., Tanno K.
IEEJ Transactions on Electronics, Information and Systems 139 ( 11 ) 1341 - 1347 2019年
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：IEEJ Transactions on Electronics, Information and Systems
© 2019 The Institute of Electrical Engineers of Japan. In this paper, we discuss a system that can recognize and classify stress based on speech. The system was built using a deep neural network (DNN) embedding to improve the baseline system (i-vector), called x-vector. The i-vector system usually requires Linear Discriminant Analysis (LDA) for dimension reduction, followed by Probability Linear Discriminant Analysis (PLDA) for scoring. In this work, the Generalized Discriminant Analysis (GDA) based Gaussianized cosine kernel and Joint-PLDA was used to replace the LDA and PLDA, respectively. The SUSAS database was used for training, testing, and enrollment data of our proposed system. We assessed our proposed system's effectiveness compared to the baseline system using equal error rate (EER). The evaluation and experiment results show that our proposed system outperforms the baseline system.
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Proposal and design methodology of switching mode low dropout regulator for bio-medical applications 査読あり
Kondo K., Tamura H., Tanno K.
International Journal of Electrical and Computer Engineering 9 ( 6 ) 5046 - 5059 2019年
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：International Journal of Electrical and Computer Engineering
Copyright © 2019 Institute of Advanced Engineering and Science. All rights reserved. The switching operation based low dropout (LDO) regulator utilizing on-off control is presented. It consists of simple circuit elements which are comparator, some logic gates, switched capacitor and feedback circuit. In this study, we target the application to the power supply circuit for the analog front end (AFE) of bio-medical system (such as daily-used bio-monitoring devices) whose required maximum load current is 50 µA. In this paper, the design procedure of the proposed LDO has been clarified and actual circuit design using the procedure has been done. The proposed LDO has been evaluated by SPICE simulation using 1P 2M 0.6 µm CMOS process device parameters. From simulation results, we could confirm that the low quiescent current of 1 µA with the output ripple of 5 mVpp. The circuit area is 0.0173 mm2 in spite of using 0.6 µm design rules. The proposed circuit is suitable for adopting to the light load and low frequency applications.
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Front caster capable of reducing horizontal forces on step climbing
Lee G., Shiraishi M., Tamura H., Kawasue K.
Advances in Intelligent Systems and Computing 744 233 - 239 2019年
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：Advances in Intelligent Systems and Computing
© 2019, Springer Nature Singapore Pte Ltd. Obstacles such as ramps, steps and irregular floor surfaces are commonly encountered in homes, offices and other public spaces. These obstacles frequently limit the daily activities of people who use mobility aids. In this paper, a new offsetting mechanism for climbing a step while reducing the required horizontal climbing force and its step-climbing wheel prototype are proposed. Specifically, the proposed wheel allows to integrate into an existing personal assist devices. The proposed step-climbing wheel can help to reduce this limitation. The physical and mental burdens of caregivers and medical staff can also be reduced by making the users of the mechanism more self-sufficient. This paper provides details on this offsetting mechanism and its prototype. The mechanism is analyzed mathematically and its functionality is verified by experiments using a prototype.
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Simple Measurement System for Biological Signal Using a Smartphone 査読あり
Ryoichi Miyauchi, Koichi Tanno, Hiroki Tamura
International Journal of Electrical and Computer Engineering 8 ( 6 ) 4157 - 4163 2018年12月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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High Speed and Low Pedestal Error Bootstrapped CMOS Sample and Hold Circuit 査読あり
Agung Setiabudi, Hiroki Tamura, Koichi Tanno
International Journal of Electrical and Computer Engineering 8 ( 6 ) 4148 - 4156 2018年12月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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A Study on the Lumbar Burden Evaluation of Work using One Smartphone 査読あり
Hiroki Tamura, Keiko Sakurai, Koichi Tanno, Yasufumi Fuse
Journal of Robotics, Networking and Artificial Life 5 ( 3 ) 173 - 179 2018年12月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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Hold Error Minimization Method on S/H Circuit Using Feedforward Neural Network as a Function Approximation 査読あり
Agung Setiabudi, Hiroki Tamura, Koichi Tanno, Zainul Abidin
Proc. of The 9th Electrical Power, Electronics, Communications, Controls, and Informatics Seminar 2018年10月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
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Automatic Sleep Stage Detection Based on HRV Spectrum Analysis 査読あり
Edita Rosana Widasari, Hiroki Tamura, Koichi Tanno
IEEE International Conference on Systems, man, and Cybernetics 2018年10月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
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The Facial Stress Recognition Based on Multi-histogram Features and Convolutional Neural Network 査読あり
Barlian Henryranu Prasetio, Hiroki Tamura, Koichi Tanno
Conference: 2018 IEEE International Conference on Systems, Man, and Cybernetics (SMC) 2018年10月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
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A Study on High Accuracy Stride Estimation on Smartphone Combining Acceleration Sensor and Gyro Sensor 査読あり
Hiroki Tamura, Keiki Sakurai, Koichi Tanno
Journal of Robotics, Networking and Artificial Life 5 ( 2 ) 83 - 88 2018年9月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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Automatic Design Methodology for Folded-Cascode Operational Amplifier Using Replica Bias Circuit 査読あり
Ryoichi Miyauchi, Koichi Tanno, Hiroki Tamura
The 33rd International Technical Conference on Circuits/Systems, Computers and Communications (ITC – CSCC 2018) 17 - 20 2018年7月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
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A Simple Transistors Width Adjustment Method on CMOS Transmission Gate Switch to Reduce Hold Error of S/H Circuit 査読あり
Agung Setiabudi, Hiroki Tamura, Koichi Tanno
International Journal on Advanced Science, Engineering and Information Technology 8 ( 3 ) 924 - 929 2018年6月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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Ensemble Support Vector Machine and Neural Network Method for Speech Stress Recognition 査読あり
Barlian Henryranu Prasetio, Hiroki Tamura, Koichi Tanno
Conference: 2018 International Workshop on Big Data and Information Security (IWBIS) 2018年5月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）