論文 - 田村 宏樹
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Method for estimating locomotive syndrome based on walking motion 査読あり
田村 宏樹，鶴田 来美，帖佐 悦男
臨床バイオメカニクス学会誌 40 223 - 229 2019年8月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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A New Investigation of Automatic Sleep Stage Detection using Decision-Tree-Based Support Vector Machine and Spectral Features Extraction of ECG Signal 査読あり
Edita Rosana Widasari, Koichi Tanno, Hiroki Tamura
IEEJ Transactions on Electronics Information and Systems 139 ( 7 ) 820 - 827 2019年7月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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Widasari E., Tanno K., Tamura H.
IEEJ Transactions on Electronics, Information and Systems 139 ( 7 ) 820 - 827 2019年7月
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. This research is proposed to investigate an easy, fast, and effective method for automatic sleep stage detection using spectral features extraction from electrocardiography (ECG) signal alone. Sleep stage detection is the gold standard for sleep analysis. A sleep physician may suspect a treatment and diagnosis of sleep diseases through sleep stage detection. Polysomnography (PSG) method that generally used for detecting sleep stage. This method is intrusive and difficult to be implemented for in-home and portable systems. Moreover, it is involved a lot of effort, time and cost. The automatic sleep stage detection that uses only ECG signal is expected can solve these problems. The proposed method was tested and evaluated on 51 subjects that consist of 16 healthy subjects, 9 patients with insomnia, 4 patients with sleep-disordered breathing, and 22 patients with REM behavior disorder. In this research also tried to apply a minimal feature for automatic sleep stage detection. The two features applied were the normalized Low Frequency, LF (n.u.) band power and normalized High Frequency, HF (n.u.) band power that obtained from spectral features extraction. These features were then used as inputs for sleep stage classification. Mostly commonly used learning classifiers is implemented to classify sleep stage, namely KNN, NN, DT, SVM, and proposed DTB-SVM. The proposed method using DTB-SVM and spectral features extraction of ECG achieved an average classification specificity, sensitivity, and overall accuracy of 98.31%, 91.84%, 95.06%, respectively. The proposed method is able to obtain all sleep stage condition on patients and non-patients subjects. However, it is feasible to implement in-home and portable system of automatic sleep stage detection instead of using a multichannel signal.
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A STUDY ON MULTIPLE PIGS TRACKING USING OBJECT TRACKING METHOD WITH LEARNING FUNCTION 査読あり
Ryusei Chibu, Hiroki Tamura, Koichi Tanno
Proc. of 2019 International Conference on Machine Learning and Cybernetics, July 2019. 2019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 STUDY ON EYE MOVEMENT MEASUREMENT METHODS FOR COMMUNICATION 査読あり
Taro Yamanoue, Hiroki Tamura, Koichi Tanno
Proc. of 2019 International Conference on Machine Learning and Cybernetics, July 2019. 2019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 STUDY ON RELATIONSHIP BETWEEN THE GAZE INFORMATION NEAR TRAFFIC SIGNAL AND THE DRIVING OPERATION 査読あり
TAKUMI SHIMAUCHI, HIROKI TAMURA, KOICHI TANNO, YUKIO HATTORI
2019 International Conference on Machine Learning and Cybernetics 2019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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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 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 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
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）