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Influence of automated driving on driver’s own localization:a driving simulator study

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Journal of Intelligent and Connected Vehicles 2018年第3期1卷 99-106页

作者： Ryuichi Umeno Makoto Itoh satoshi Kitazaki University of Tsukuba IbarakiJapan National Institute of Advanced Industrial Science and Technology Tsukuba CenterTsukuba CentralIbarakiJapan

Purpose–Level 3 automated driving,which has been defined by the Society of Automotive Engineers,may cause driver drowsiness or lack of situation awareness,which can make it difficult for the driver to recognize where he/she ***,the purpose of this study was to conduct an experimental study with a driving simulator to investigate whether automated driving affects the driver’s own localization compared to manual ***/methodology/approach–Seventeen drivers were divided into the automated operation group and manual operation *** in each group were instructed to travel along the expressway and proceed to the specified *** automated operation group was forced to select a course after receiving a Request to Intervene(RtI)from an automated driving ***–A driver who used the automated operation system tended to not take over the driving operation correctly when a lane change is immediately required after the ***/value–This is a fundamental research that examined how the automated driving operation affects the driver's own *** experimental results suggest that it is not enough to simply issue an RtI,and it is necessary to tell the driver what kind of circumstances he/she is in and what they should do next through the *** conclusion can be taken into consideration for engineers who design automatic driving vehicles.

关键词： Automated vehicles Autonomous driving Advanced driver assistant systems Driver behaviors and assistance Human-machine interfaces Request to intervene

Survivin expression in early hepatocellular carcinoma and post-treatment with anti-cancer drug under hypoxic culture condition

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World Journal of Gastroenterology 2007年第40期13卷 5306-5311页

作者： satoshi Mamori Tadashi Asakura Kiyoshi Ohkawa Hisao Tajiri Division of Gastroenterology and Hepatology Department of Internal MedicineThe Jikei University School of MedicineTokyo 105-8461Japan Department of Biochemistry 1 The Jikei University School of MedicineTokyo 105-8461Japan

AIM： To investigate the expression of survivin during the early stages of hepatocellular cardnoma （HCC）.METHODS： Immunohistochemical expression of survivin in liver tumor and non-tumor tissue specimens taken from 17 patients was compared. In addition, to determine the survivin expression in response to anticancer drugs in early stage HCC, the survivin expression was determined after the treatment of the HCC cells with anti-cancer drugs under hypoxic culture conditions.RESULTS： Survivin proteins were expressed in 64.7% of cells in early HCC specimens. A correlation between the survivin expression rate in the peritumoral hepatocytes and the rate of expression in the HCC specimens （low-rate group vs high-rate group） was observed. The survivin protein concentration in HCC cells was increased by the combination of hypoxia and anti-cancer drugs.CONCLUSION： This study suggests that survivin could be used as a therapeutic target in early HCC.

关键词： Survivin Hepatocellular carcinoma Hypoxia

Image of Ne Trap by a Microwave Cavity

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Chinese Physics Letters 1997年第2期14卷 93-95页

作者： XU Lei satoshi Oishi Kazuko Shimizu Hiroshi Takuma Fujio Shimizu Department of Physics Fudan UniversityShanghai 200433 Institute for Laser Science The University of Electro-communicationsChofugaokaChofushiTokyo 182Japan Department of Applied Physics University of TokyoBunkyo-kuTokyo 113Japan

The focusing of Ne metastable atoms trapped in magnetic-optical trap by a microwave cavity was *** cavity was operated at TM010 *** a microwave power of 14W,the Ne trap was imaged to a spot of about 0.25mm(full width ... 详细信息

关键词： microwave Microwave cavity

Case study of debris flow disaster scenario caused by torrential rain on Kiyomizu-dera, Kyoto, Japan - using Hyper KANAKO system

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Journal of Mountain Science 2016年第2期13卷 193-202页

作者： Kana NAKATANI satoshi HAYAMI Yoshifumi SATOFUKA Takahisa MIZUYAMA Department of Erosion Control Engineering Kyoto University Kyoto 606-8502 Japan CTI Engineering Co. Ltd. Osaka 541-0045 Japan Department of Civil Engineering Ritsumeikan University Shiga 606-8502 Japan National Graduate Institute for Policy Studies Tokyo106-8677 Japan

This paper presents debris-flow numerical simulations using the Hyper KANAKO system,developed by the *** system uses the debris flow simulator KANAKO 2D equipped with a graphical user interface(GUI);hence,a user can easily produce appropriate landform data for simulations using standard laser profiler data,and visualize the results using a *** KANAKO was applied to the streams around Kiyomizu-dera in Kyoto,***-dera is a famous temple in Japan which is visited by numerous tourists throughout the *** simulated a disaster scenario of debris flow caused by torrential *** set the hydrograph using rainfall intensity data,and set the landform data using information from the Geospatial Information Authority of Japan(GSI) and a digital elevation model(DEM).We evaluated different mesh sizes and also used a digital surface model(DSM) to consider the building *** simulation results showed that with small mesh size,the debris flowmoved through the roads,which seems realistic for a disaster *** buildings were considered,the flow direction changed,and a 1-m flow depth,which was deeper than in other cases,appeared in the flow *** may pose a dangerous situation for evacuations.

关键词： Debris flow Simulation GIS Hyper KANAKO system Torrential rain Kiyomizu-dera

Fabrication of Co2Fe（Al,Si） and Co2Fe（Al,Si）/MgO on Ge（111） Substrate and Its Magnetic Properties

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Journal of Electronic Science and Technology 2019年第2期17卷 109-115页

作者： Kohei Kataoka Nobuki Tezuka Masashi Matsuura satoshi Sugimoto Graduate School of Engineering Tohoku University

We investigated the interfacial effects on magnetic properties in Co2Fe(Al,Si)/Ge (CFAS/Ge) and CFAS/MgO/Ge systems to demonstrate the effects of the interface structure on magnetic properties. CFAS and CFAS/MgO were deposited on the i-Ge(111) substrate. In-situ reflection high energy electron diffraction (RHEED) patterns showed epitaxially grown CFAS and MgO on Ge(111). According to the X-ray diffraction (XRD)φ-scan of CFAS(220), we determined that the crystallographic orientation relationships were CFAS(111)//Ge(111) and CFAS(111)//MgO(111) Ge(111). The magnetic properties were measured by the vibrating sample magnetometer (VSM) and the saturation magnetization Ms value of CFAS with 2-nm thick MgO reached the value of L21 ordered one. A uniaxial magnetic anisotropy behavior was observed both in CFAS/Ge and CFAS/MgO/Ge structures after annealing. We confirmed the behavior did not only originate from the CFAS/Ge interface but also CFAS/MgO and the ordering structure.

关键词： Co2Fe(Al,Si) full-heusler alloy magnetic anisotropy

Use of Asian selected agricultural byproducts to modulate rumen microbes and fermentation

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Journal of Animal Science and Biotechnology 2017年第2期8卷 317-326页

作者： Yasuo Kobayashi Seongjin Oh Htun Myint satoshi Koike Lab of Animal Function and Nutrition Research Faculty of AgricultureHokkaido UniversitySapporo 060-8589 Japan

In the last five decades, attempts have been made to improve rumen fermentation and host animal nutrition through modulation of rumen microbiota. The goals have been decreasing methane production, partially inhibiting protein degradation to avoid excess release of ammonia, and activation of fiber digestion. The main approach has been the use of dietary supplements. Since growth-promoting antibiotics were banned in European countries in2006, safer alternatives including plant-derived materials have been explored. Plant oils, their component fatty acids,plant secondary metabolites and other compounds have been studied, and many originate or are abundantly available in Asia as agricultural byproducts. In this review, the potency of selected byproducts in inhibition of methane production and protein degradation, and in stimulation of fiber degradation was described in relation to their modes of action. In particular, cashew and ginkgo byproducts containing alkylphenols to mitigate methane emission and bean husks as a source of functional fiber to boost the number of fiber-degrading bacteria were highlighted. Other byproducts influencing rumen microbiota and fermentation profile were also described. Future application of these feed and additive candidates is very dependent on a sufficient, cost-effective supply and optimal usage in feeding practice.

关键词： Agricultural byproduct Fermentation Fiber degradation Methane mitigation Microbiota Plant secondary metabolites Rumen

Degradation of Reactive Yellow 86 with photo-Fenton process driven by solar light

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Journal of Environmental Sciences 2010年第9期22卷 1455-1461页

作者： Hideyuki Katsumata Syunya Koike satoshi Kaneco Tohru Suzuki Kiyohisa Ohta Department of Chemistry for Materials Graduate School of EngineeringMie UniversityTsu Environmental Preservation Center Mie UniversityTsu

The decolorization of Reactive Yellow 86 （RY 86）, one of reactive azo dyes, was investigated in the presence of Fenton reagent under solar light irradiation. The decolorization rate was strongly influenced by pH, initial concentrations of H202 and Fe（II）, and so on. An initial concentration of 40 mg/L was decolored more than 90% after 20 min under optimum conditions. The activation energy of the solar photo-Fenton reaction was 1.50 kJ/mol for RY 86 in the temperature range of 10-60℃. In the kinetic study, the rate constant of RY 86 with OH- radicals could be estimated to be 1.7 × 10^10 L/（***）. The decolorization efficiency of RY 86 under solar light irradiation was comparable to the artificial light irradiation. The decrease of TOC as a result of mineralization of RY 86 was observed during photo-Fenton process. The rate of RY 86 mineralization was about 83% under UV irradiation after 24 hr. The formation of chloride, sulfate, nitrate and ammonium ions as end-products was observed during the photocatalytic process. The decomposition of RY 86 gave two kinds of intermediate products. The degradation mechanism of RY 86 was proposed on the base of the identified intermediates.

关键词： reactive azo dye photo-Fenton reaction solar light irradiation decolorization mineralization

Integrating GPS trajectory and topics from Twitter stream for human mobility estimation

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Frontiers of Computer Science 2019年第3期13卷 460-470页

作者： satoshi MIYAZAWA Xuan SONG Tianqi XIA Ryosuke SHIBASAKI Hodaka KANEDA Department of Socio-Cultural Environmental Studies Graduate School of Frontier Sciences The University of Tokyo Chiba 277-8563 Japan Center for Spatial Information Science The University of Tokyo Kashiwa 277-8568 Japan Zenrin DataCom Co. Ltd Tokyo 108-6206 Japan

Understanding urban dynamics and large-scale human mobility will play a vital role in building smart cities and sustainable urbanization. Existing research in this domain mainly focuses on a single data source (e.g., GPS data, CDR data, etc.). In this study, we collect big and heterogeneous data and aim to investigate and discover the relationship between spatiotemporal topics found in geo-tagged tweets and GPS traces from smartphones. We employ Latent Dirichlet Allocation-based topic modeling on geo-tagged tweets to extract and classify the topics. Then the extracted topics from tweets and temporal population distribution from GPS traces are jointly used to model urban dynamics and human crowd flow. The experimental results and validations demonstrate the efficiency of our approach and suggest that the fusion of cross-domain data for urban dynamics modeling is more practical than previously thought.

关键词： GPS trajectory human mobility SNS locationbased social network (LBSN) topic modeling data mining spatiotemporal topic

Experimental Analysis of Flow Structure in Contra-Rotating Axial Flow Pump Designed with Different Rotational Speed Concept

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Journal of Thermal Science 2013年第4期22卷 345-351页

作者： Linlin Cao satoshi Watanabe Toshiki Imanishi Hiroaki Yoshimura Akinori Furukawa Graduate School of Engineering Kyushu University Department of Mechanical Engineering Kyushu University Oita National College of Technology

As a high specific speed pump, the contra-rotating axial flow pump distinguishes itself in a rear rotor rotating in the opposite direction of the front rotor, which remarkably contributes to the energy conversion, the reduction of the pump size, better hydraulic and cavitation performances. However, with two rotors rotating reversely, the significant interaction between blade rows was observed in our prototype contra-rotating rotors, which highly affected the pump performance compared with the conventional axial flow pumps. Consequently, a new type of rear rotor was designed by the rotational speed optimization methodology with some additional considerations, aiming at better cavitation performance, the reduction of blade rows interaction and the secondary flow suppression. The new rear rotor showed a satisfactory performance at the design flow rate but an unfavorable positive slope of the head - flow rate curve in the partial flow rate range less than 40% of the design flow rate, which should be avoided for the reliability of pump-pipe systems. In the present research, to understand the internal flow field of new rear rotor and its relation to the performances at the partial flow rates, the velocity distributions at the inlets and outlets of the rotors are firstly investigated. Then, the boundary layer flows on rotor surfaces, which clearly reflect the secondary flow inside the rotors, are analyzed through the limiting streamline observations using the multi-color oil-film method. Finally, the unsteady numerical simulations are carded out to understand the complicated internal flow structures in the rotors.

关键词： Contra-rotating rotors Internal flow Limiting streamlines Tip leakage vortex Corner separation