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Annual Conference of the IEEE Industrial Electronics Society

作者： Akihito Ono Satoru Takahashi Tsuyoshi Suzuki Kuniaki Kawabata Fumiaki Takemura Shun'ichi Kaneko Hidenori Ishihara Dept. of Intelligent Mechanical Systems Engineering Kagawa University Dept. of Information and Communication Engineering Tokyo Denki University RIKEN-XJTU Joint Research Unit RIKEN Dept. of Mechanical System Engineering Okinawa National College of Technology Graduate School of Information Science and Technology Hokkaido University

ISBN: (纸本)9781479917631

In this paper, we propose a method of estimating amount of attitude change of stationary sensor node which is important to realize observation of identical spot for a long term based on the tracked position data of underwater landmark generated on underwater image, and then in order to see a target, in here a coral, in the fixed position on image, attitude of captured image is corrected based on the estimated amount of attitude data. Then, we generate underwater landmark based on orientation code which is robust for illumination change caused by wave, and track underwater landmarks sequentially combining the method of position detection by using orientation code matching and the method of position estimation by particle filter. Further, we design the evaluation function using time series images. Then, we estimate amount of attitude change of sensor unit of stationary sensor node by optimizing the evaluation function based on Steepest Descent Method, and correct the attitude of original image with the estimated attitude data. Finally, through some experiments, we prove the effectiveness of our methods and discuss the future work.

关键词： Stationary sensor node Underwater landmark Attitude estimation Orientation code matching Particle filter Time series image Attitude correction for underwater image

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Oscillation of a rotating levitated droplet: Analysis with a mechanical model

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Physical Review E 2015年第6期92卷 062904-062904页

作者： Hiroyuki Kitahata Rui Tanaka Yuki Koyano Satoshi Matsumoto Katsuhiro Nishinari Tadashi Watanabe Koji Hasegawa Tetsuya Kanagawa Akiko Kaneko Yutaka Abe Department of Physics Graduate School of Science Chiba University Chiba 263-8522 Japan Graduate School of System and Information Engineering University of Tsukuba Tsukuba Ibaraki 305-8573 Japan Institute of Space and Astronautical Science Japan Aerospace Exploration Agency Tsukuba Ibaraki 305-8505 Japan Research Center for Advanced Science and Technology The University of Tokyo Meguro-ku Tokyo 153-8904 Japan Research Institute of Nuclear Engineering University of Fukui Tsuruga Fukui 914-0055 Japan Faculty of Engineering Kogakuin University Shinjuku-ku Tokyo 163-8677 Japan

A droplet of millimeter-to-centimeter scale can exhibit electrostatic levitation, and such levitated droplets can be used for the measurement of the surface tension of the liquids by observing the characteristic frequency of oscillatory deformation. In the present study, a simple mechanical model is proposed by considering a single mode of oscillation in the ellipsoidal deformation of a levitated rotating droplet. By measuring the oscillation frequency with respect to the rotational speed and oscillation amplitude, it is expected that the accuracy of the surface tension measurement could be improved. Using the proposed model, the dependences of the characteristic frequency of oscillatory deformation and the averaged aspect ratio are calculated with respect to the rotational angular velocity of a rotating droplet. These dependences are found to be consistent with the experimental observations.

关键词： Deformation

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Five-Year Outcomes of Bilateral Subthalamic Nucleus Stimulation in Japanese Patients with Parkinson’s Disease

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Advances in Parkinson's Disease 2015年第2期4卷 21-27页

作者： Atsushi Umemura Miwako Miyata Yuichi Oka Kenji Okita Genko Oyama Yasushi Shimo Nobutaka Hattori Department of Research and Therapeutics for Movement Disorders Juntendo University Graduate School of Medicine Tokyo Japan Department of Neurosurgery Juntendo University Graduate School of Medicine Tokyo Japan Health Assistant Information Technology Course Department of Human Care Engineering Faculty of Health Science Nihon Fukushi University Aichi Japan Department of Neurosurgery Nagoya City University Graduate School of Medicine Nagoya Japan Department of Neurology Nagoya City University Graduate School of Medicine Nagoya Japan Department of Neurology Juntendo University Graduate School of Medicine Tokyo Japan

Background: Deep brain stimulation (DBS) of the subthalamic nucleus (STN) is widely performed for medically refractory Parkinson’s disease (PD). Several western studies have examined the long-term outcomes of STN DBS. However, the long-term outcomes in Japanese patients have not been reported. Methods: We studied the long-term outcomes of STN DBS in Japanese patients with PD. Fifty-five consecutive patients treated with bilateral STN DBS were followed for 5 years after surgery. Each patient underwent Unified Parkinson’s Disease Rating Scale assessments preoperatively and 1 and 5 years after surgery. Results: Twelve patients (22%) were lost to follow up within 5 years. Among them, 7 died and 5 became bed ridden because of PD deterioration. In the 43 patients followed for 5 years, STN DBS significantly improved motor function. The cardinal motor symptoms of tremor, rigidity, and bradykinesia in medication-on periods were significantly better than baseline 5 years after DBS. However, axial motor symptoms of speech, gait and postural stability gradually deteriorated and significantly worsened 5 years after DBS. Motor complications, including dyskinesia and motor fluctuations, significantly improved after DBS with a marked reduction in dopaminergic medication. These effects were maintained 5 years after DBS. Frequently, persisting adverse effects included apraxia of eyelid opening and dysarthria. Conclusions: STN DBS significantly improved motor symptoms in patients with advanced PD. These effects were maintained over 5 years in most patients. However, some showed rapid PD progression even after STN DBS. Other treatments for the axial symptoms and disease progression are needed in long-term PD treatment.

关键词： Deep Brain Stimulation Subthalamic Nucleus Parkinson’s Disease Long-Term Outcome Adverse Effect

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Techniques for estimating blood pressure variation using video images

Techniques for estimating blood pressure variation using vid...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society

作者： Norihiro Sugita Kazuma Obara Makoto Yoshizawa Makoto Abe Akira Tanaka Noriyasu Homma Department of Management Science and Technology Graduate School of Engineering Tohoku University Sendai 980-8579 Japan Department of Electrical and Communication Engineering Graduate School of Engineering Tohoku University Sendai 980-8579 Japan Information Synergy Center Tohoku University Sendai 980-8579 Japan Department of Human Support System Faculty of Symbiotic Systems Science Fukushima University Fukushima 960-1296 Japan Department of Health Science Graduate School of Medicine Tohoku University Sendai 980-8575 Japan

ISBN: (纸本)9781424492695

It is important to know about a sudden blood pressure change that occurs in everyday life and may pose a danger to human health. However, monitoring the blood pressure variation in daily life is difficult because a bulky and expensive sensor is needed to measure the blood pressure continuously. In this study, a new non-contact method is proposed to estimate the blood pressure variation using video images. In this method, the pulse propagation time difference or instantaneous phase difference is calculated between two pulse waves obtained from different parts of a subject's body captured by a video camera. The forehead, left cheek, and right hand are selected as regions to obtain pulse waves. Both the pulse propagation time difference and instantaneous phase difference were calculated from the video images of 20 healthy subjects performing the Valsalva maneuver. These indices are considered to have a negative correlation with the blood pressure variation because they approximate the pulse transit time obtained from a photoplethysmograph. However, the experimental results showed that the correlation coefficients between the blood pressure and the proposed indices were approximately 0.6 for the pulse wave obtained from the right hand. This result is considered to be due to the difference in the transmission depth into the skin between the green and infrared light used as light sources for the video image and conventional photoplethysmogram, respectively. In addition, the difference in the innervation of the face and hand may be related to the results.

关键词： Techniques forehead innervation

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Cover Picture: Brownmillerite-type Ca2FeCoO5as a Practicable Oxygen Evolution Reaction Catalyst (ChemSusChem 14/2017)

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ChemSusChem 2017年第14期10卷 2840-2840页

作者： Dr. Etsushi Tsuji Dr. Teruki Motohashi Hiroyuki Noda Dr. Damian Kowalski Dr. Yoshitaka Aoki Dr. Hajime Tanida Junji Niikura Dr. Yukinori Koyama Dr. Masahiro Mori Dr. Hajime Arai Dr. Tsutomu Ioroi Dr. Naoko Fujiwara Dr. Yoshiharu Uchimoto Dr. Zempachi Ogumi Dr. Hiroki Habazaki Division of Applied Chemistry Faculty of Engineering Hokkaido University Sapporo 060-8628 Japan Department of Chemistry and Biotechnology Tottori University Tottori 680-8550 Japan Department of Materials and Life Chemistry Kanagawa University Yokohama 221-8686 Japan Graduate School of Chemical Sciences and Engineering Hokkaido University Sapporo 060-8628 Japan Office of Society-Academia Collaboration for Innovation Kyoto University Kyoto 611-0011 Japan Present address: Battery Analysis Laboratory Device Analysis Department NISSAN ARC LTD. Kanagawa 237-0061 Japan Present address: Research and Services Division of Materials Data and Integrated System (MaDIS) Center for Materials Research by Information Integration (CMI2) National Institute for Materials Science (NIMS) Ibaraki 305-0047 Japan Present address: Materials Science Research Group Research Institute of Electrochemical Energy Department of Energy and Environment National Institute of Advanced Industrial Science and Technology (AIST) Osaka 563-8577 Japan Present address: School of Materials and Chemical Technology Tokyo Institute of Technology Yokohama 226-8502 Japan National Institute of Advanced Industrial Science and Technology Osaka 563-8577 Japan Graduate School of Human and Environmental Studies Kyoto University Kyoto 606-8501 Japan

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Distributed Constrained Optimization Protocol via an Exact Penalty Method

Distributed Constrained Optimization Protocol via an Exact P...

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European Control Conference

作者： Izumi Masubuchi Takayuki Wada Toru Asai Nguyen Thi Hoai Linh Yuzo Ohta Yasumasa Fujisaki Graduate School of System Informatics Kobe University Graduate School of Information Science and Technology Osaka University Graduate School of Engineering Osaka University

ISBN: (纸本)9781467371605

The purpose of this paper is to propose a protocol for distributed multi-agent optimization problem to minimize the average of objective functions of the agents in the network with satisfying constraints of each agent. The exact penalty method is applied to distributed optimization via a linear protocol, with employing two step-size parameters for the objective function and the constraint function of each agent. The proposed protocol works only with the decision variables and does not need additional variables such as dual variables. A proof of the convergence of the proposed protocol is provided as well as the boundedness under mild assumptions. The protocol is also illustrated by a numerical example.

关键词： protocols Objective function penalty Agents Constrained optimization Distribute Exact numerical example

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International Society for Therapeutic Ultrasound Conference 2016

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Journal of Therapeutic Ultrasound 2017年第1期5卷 1-114页

作者： Brian Fowlkes Pejman Ghanouni Narendra Sanghvi Constantin Coussios Paul C. Lyon Michael Gray Christophoros Mannaris Marie de Saint Victor Eleanor Stride Robin Cleveland Robert Carlisle Feng Wu Mark Middleton Fergus Gleeson Jean-Franҫois Aubry Kim Butts Pauly Chrit Moonen Jacob Vortman Shirley Sharabi Dianne Daniels David Last David Guez Yoav Levy Alexander Volovick Javier Grinfeld Itay Rachmilevich Talia Amar Zion Zibly Yael Mardor Sagi Harnof Michael Plaksin Yoni Weissler Shy Shoham Eitan Kimmel Omer Naor Nairouz Farah Dong-Guk Paeng Zhiyuan Xu John Snell Anders H. Quigg Matthew Eames Changzhu Jin Ashli C. Everstine Jason P. Sheehan Beatriz S. Lopes Neal Kassell Thomas Looi Vera Khokhlova Charles Mougenot Kullervo Hynynen James Drake Michael Slayton Richard C. Amodei Keegan Compton Ashley McNelly Daniel Latt John Kearney David Melodelima Aurelien Dupre Yao Chen David Perol Jeremy Vincenot Jean-Yves Chapelon Michel Rivoire Wei Guo Guoxin Ren Guofeng Shen Michael Neidrauer Leonid Zubkov Michael S. Weingarten David J. Margolis Peter A. Lewin Nathan McDannold Jonathan Sutton Natalia Vykhodtseva Margaret Livingstone Thiele Kobus Yong-Zhi Zhang Michael Schwartz Yuexi Huang Nir Lipsman Jennifer Jain Martin Chapman Tejas Sankar Andres Lozano Robert Yeung Christakis Damianou Nikolaos Papadopoulos Omer Brokman Eyal Zadicario Ori Brenner David Castel Shih-Ying Wu Julien Grondin Wenlan Zheng Marc Heidmann Maria Eleni Karakatsani Carlos J. Sierra Sánchez Vincent Ferrera Elisa E. Konofagou Marinos Yiannakou HongSeok Cho Hwayoun Lee Mun Han Jong-Ryul Choi Taekwan Lee Sanghyun Ahn Yongmin Chang Juyoung Park Nicholas Ellens Ari Partanen Keyvan Farahani Raag Airan Alexandre Carpentier Michael Canney Alexandre Vignot Cyril Lafon Jean-yves Delattre Ahmed Idbaih Henrik Odéen Bradley Bolster Eun Kee Jeong Dennis L. Parker Pooja Gaur Xue Feng Samuel Fielden Craig Meyer Beat Werner William Grissom Michael Marx Hans Weber Valentina Taviani Brian Hargreaves Jun Tanaka Kentaro Kikuchi Ayumu Ishijima Takashi Azuma Kosuke Minamihata Satoshi Basic Radiological Sciences Division Department of Radiology University of Michigan Ann Arbor USA Stanford School of Medicine Stanford USA SonaCare Medical Indianapolis USA Institute of Biomedical Engineering University of Oxford Oxford UK HIFU Unit Churchill Hospital Oxford UK Department of Oncology University of Oxford Oxford UK Department of Radiology Churchill Hospital Oxford UK Institut Langevin Paris France Center for Imaging Sciences Imaging Division University Medical Center Utrecht The Netherlands InSighTec Haifa Israel Sheba Medical Center Ramat-Gan Israel Tel-Aviv University Tel-Aviv Israel Faculty of Biomedical Engineering & Russell Berrie Nanotechnology Institute Technion – Israel Institute of Technology Haifa Israel ELSC Center for Brain Sciences Hebrew University Jerusalem Israel Biomedical Engineering Technion- Israel Institute of Technology Haifa Israel Faculty of Life Sciences Bar Ilan University Ramat Gan Israel Focused Ultrasound Foundation Charlottesville USA Ocean System Engineering Jeju National University Jeju Republic of Korea Neurosurgery University of Virginia Charlottesville USA Biology University of Virginia Charlottesville USA Pathology University of Virginia Charlottesville USA Hospital for Sick Children Toronto Canada University of Toronto Toronto Canada University of Washington Seattle USA Philips Healthcare Markham Canada Sunnybrook Research Institute Toronto Canada Guided Therapy Systems LLC Mesa USA School of Medicine University of Arizona Tucson USA The CORE Institute Phoenix USA LabTAU - U1032 INSERM Lyon France Centre Leon Berard Lyon France Department of Oral Maxillofacial and Head Neck Oncology Shanghai 9th People’s Hospital Shanghai China The School of Biomedical Engineering Science and Health Systems Drexel University Philadelphia USA Department of Surgery College of Medicine Drexel University Philadelphia USA Biostatistics and Epidemiology University of Pennsylvania Philadelphi

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Opinion Formation under Bounded Confidence via Gossip Algorithms

Opinion Formation under Bounded Confidence via Gossip Algori...

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IEEE Annual Conference on Decision and Control

作者： Nguyen Thi Hoai Linh Takayuki Wada Izumi Masubuchi Toru Asai Yasumasa Fujisaki Graduate School of Information Science and Technology Osaka University 1-5 Yamadaoka Suita Osaka 565-0871 Japan Graduate School of System Informatics Kobe University 1-1 Rokkodai Nada Kobe 657-8501 Japan Graduate School of Engineering Nagoya University Furo-cho Chikusa Nagoya Aichi 464-8603 Japan

ISBN: (纸本)9781479978878

This paper investigates two bounded confidence gossip algorithms, one with constant confidence threshold and the other with increasing one, for effective communicating between agents in a network among whom some opinion formation forms. Each agent in the network keeps a real value presenting its opinion about some matter. The opinions of agents will be updated time by time according to an iterative procedure. At each time, (i) two arbitrary agents are chosen randomly, (ii) they exchange their opinions, and (iii) if the distance between the opinions does not exceed some given confidence threshold, they update their opinions as the average of the two. It is shown that the algorithms almost surely drive any initial opinion profile to some opinion profile in which any two opinions either are the same or differ more than the confidence threshold. Moreover, the second algorithm can help achieving a prescribed number of different opinions on the convergence opinion profiles.

关键词： Convergence Computational modeling Clustering algorithms Mathematical model Numerical models Heuristic algorithms Biological system modeling

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Development of a ball-suspension assembly for high speed ball-on-disk friction test and measurements of speed dependent friction characteristics

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Toraibarojisuto/Journal of Japanese Society of Tribologists 2015年第2期60卷 144-152页

作者： Mitsuya, Yasunaga Zhang, Hedong Namba, Katsuya Fukuzawa, Kenji Itoh, Shintaro Nagoya Industrial Science Research Institute Noa Yotsuya Building 2F Yotsuya-Douri 1-13 Chikusa-ku Nagoya-shi Aichi464-0819 Japan Department of Complex Systems Science Graduate School of Information Science Nagoya University Furo-cho Chikusa-ku Nagoya-shi Aichi464-8601 Japan Graduate School Nagoya University Furo-cho Chikusa-ku Nagoya-shi Aichi464-8603 Japan Department of Micro-Nano System Engineering Graduate School of Engineering Nagoya University Japan

To measure friction characteristics of lubricant films in nanometer thickness, we constituted novel ball suspension assemblies (BSAs) in which ultra-smooth glass balls 2 mm in diameter were employed and a portion of the ball was protruded through a hole fabricated at the end of the suspension. Using BSAs with different protrusion heights of 1.48, 0.81 and 0.41 mm, the sliding tests were performed under the same sliding condition, and the out-of-plane vibration of the suspension and the lateral vibration of the friction-displacement transducer comprised of parallel springs were compared in a wide speed range. From these comparisons, we derived a guideline for BSA design, i.e., reducing protrusion height to around 0.8 mm allows for significant vibration suppression and stable sliding at a high speed up to 209 mm/s. In addition, using this novel type of BSA, we measured friction forces of PFPE Zdol4000 lubricant films in nanometer thickness at loading forces of 0.2-1.6 mN, and speeds of 2.09-209 mm/s. The applicability of the Johnson-Kedall-Roberts (JKR) theory and the Derjaguin-Muller-Toporov (DMT) theory to the experimental results was discussed.

关键词： Curve fitting

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Calibration method for lumbosacral dimensions in wearable sensor system of lumbar alignment

Calibration method for lumbosacral dimensions in wearable se...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society

作者： Yoshio TSUCHIYA Takashi KUSAKA Takayuki TANAKA Yoshikazu MATSUO Makoto ODA Tsukasa SASAKI Tamotsu KAMISHIMA Masanori YAMANAKA Hokkaido University Graduate School of Information Science and Technology Sapporo Japan Hakodate National College of Technology Department of Production System Engineering Hakodate Japan Hokkaido University Hospital Sapporo Japan Hokkaido University Faculty of Health Sciences Japan

ISBN: (纸本)9781424492695

Anteflexion of the spine is essential for many physical activities in everyday life. However, this motion places the lumbar disks under heavy load due to changes in the shape of the lumbar spine and can lead to low back pain. With the aim of reducing low back pain, here we developed a wearable sensor system that can estimate lumbosacral alignment and lumbar load by measuring the shape of the lumbar skin when the lumbosacral alignment changes. In addition, we used this system to measure the parameters of anteflexion and studied the change in dimensions of the lumbar spine from changes in posture. By determining the dimensions of the lumbosacral spine on an X-ray image, a lumbosacral dimensions calibration method based on body surface area and height was developed. By using this method, lumbosacral alignment and lumbar load could be accurately estimated using the wearable sensor system.

关键词： lumbosacral dimensions wearable sensor system lumbar alignment Sensor systems CALIBRATION METHODS Wearable sensors anterior displacement Lumbar Region dimensions Lumbar Vertebrae Lumbosacral spine Heavy loads

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