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Journal of Modern Transportation 2016年第3期24卷 177-186页

作者： Yanning Zhao Toshiyuki Yamamoto takayuki morikawa Department of Civil Engineering Nagoya University Institute of Materials and Systems for Sustainability Nagoya University Institute of Innovation for Future Society Nagoya University

This paper examines older driver＇s automotive trip （abbreviation： trip） characteristics which include trip frequency, trip length, destination distribution, and non- home-based （NHB） trips. A two-month experiment of 108 participants was carried out to collect GPS tracking data in Aichi Prefecture, Japan. To identify the effect of living area, a comparative analysis between older drivers and others is conducted in densely inhabited district （DID, i.e., urban） and other areas （non-DID, i.e., suburban, rural, etc）, separately. The present study found that there was no sig- nificant difference between the trip characteristics of older drivers and others who were living in DID. Thus, we suggest that the education of safety driving and the rec- ommendation of public transportation should be given to DID-living older drivers. However, the results of non-DID reflected that older drivers＇ trip frequency, trip length, destination, and NHB trips rate were shorter and lower than others＇. This implies that electric vehicles may be suit- able for promotion among older drivers in suburban and rural area. Furthermore, the regression analysis confirmed that ＂older driver＂ was a significant independent variable on trip frequency, trip length, and NHB trips, and there were interaction effects between ＂older driver＂ and ＂living areas＂ on all trip characteristics.

关键词： Older driver Travel behavior Living areaTrip frequency - Trip length Destination distribution Non-home-based (NHB) trips

An analysis on older driver＇s driving behavior by GPS tracking data： Road selection, left/right turn, and driving speed

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Journal of Traffic and Transportation Engineering(English Edition) 2018年第1期5卷 56-65页

作者： Yanning Zhao Toshiyuki Yamamoto takayuki morikawa Department of Civil Engineering Nagoya University Nagoya 464-8603 Japan Institute of Materials and Systems for Sustainability Nagoya University Nagoya 464-8603Japan Institute of Innovation for Future Society Nagoya University Nagoya 464-8603Japan

With the high older-related accident ratio and increasing population aging problem, understanding older drivers＇ driving behaviors has become more and more important for building and improving transportation system. This paper examines older driver＇s driving behavior which includes road selection, left/right turn and driving speed. A two-month experiment of 108 participants was carried out in Aichi Prefecture, Japan. Since apparently contradictory statements were often drawn in survey-based or simulators-based studies, this study collected not only drivers＇ basic information but also GPS data. Analysis of road selection demonstrates that older drivers are reluctant to drive on expressway not only in short trips but also in long trips. The present study did not find significant difference be- tween older drivers and others while turning at the intersections. To investigate the impact factors on driving speed, a random-effects regression model is constructed with explan- atory variables including age, gender, road types and the interaction terms between age and road types. Compared with other variables, it fails to find that age （60 years old or over） has significant impact on driving speed. Moreover, the results reflect that older drivers drive even faster than others at particular road types： national road and ordinary municipal road. The results in this study are expected to help improve transportation planning and develop driving assistance systems for older drivers.

关键词： Older driver Driving behavior Road selection Left/right turn Driving speed

Identification of activity stop locations in GPS trajectories by density-based clustering method combined with support vector machines

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Journal of Modern Transportation 2015年第3期23卷 202-213页

作者： Lei Gong Hitomi Sato Toshiyuki Yamamoto Tomio Miwa takayuki morikawa Department of Civil Engineering Nagoya University Institute of Innovation for Future Society Nagoya University EcoTopia Science Institute Nagoya University

The identification of activity locations in con- tinuous GPS trajectories is an essential preliminary step in obtaining person trip data and for activity-based trans- portation demand forecasting. In this research, a two-step methodology for identifying activity stop locations is pro- posed. In the first step, an improved density-based spatial clustering of applications with noise （DBSCAN） algorithm identifies stop points and moving points; then in the second step, the support vector machines （SVMs） method distin- guishes activity stops from non-activity stops among the identified stop points. A time sequence constraint and a direction change constraint are applied as improvements to DBSCAN （yielding an improved algorithm known as C-DBSCAN）. Then three major features are extracted for use in the SVMs method： stop duration, mean distance to the centroid of a cluster of points at a stop location, and the shorter of distances from current location to home and to the workplace. The proposed methodology was tested using GPS data collected from mobile phones in the Nagoya area of Japan. The C-DBSCAN algorithm achieves an accuracy of 90 % in identifying stop points in the first step, while the SVMs method is 96 % accurate in distin- guishing the locations of activity stops from non-activity stops in the second step. Compared to other variants of DBSCAN used to identify activity locations from GPS trajectories, this two-step method is generally superior.

关键词： Activity Stop · Non-activity stop · Stopidentification · DBSCAN· Support vector machines

城际高速公路自动货车车道的影响:基于混合仿真器的研究(英文)

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交通运输系统工程与信息 2011年第3期11卷 32-42页

作者： SUN Xun MIWA Tomio morikawa takayuki 名古屋大学环境学研究科名古屋464-8603日本名古屋大学EcoTopia科学研究所名古屋464-8603日本

自动货车车道(ATL)是一项缓解城际高速公路货车比例偏高问题的下一代物流技术.本文提出了一种微观-中观混合交通仿真器,用于精确评估在大规模公路网上引入自动货车车道所引起的交通流变化,并设计集成框架以确保路径选择与微观-中观仿真... 详细信息

自动货车车道(ATL)是一项缓解城际高速公路货车比例偏高问题的下一代物流技术.本文提出了一种微观-中观混合交通仿真器,用于精确评估在大规模公路网上引入自动货车车道所引起的交通流变化,并设计集成框架以确保路径选择与微观-中观仿真器校核的一致性,使用扩展后的微观车辆跟驰模型和车道变换模型反映轿车与货车之间的相互作用.通过3个仿真案例评价自动货车车道对交通流、货车比例、旅行时间及总旅行时间节省的影响.最后,使用混合仿真器分析道路的安全性和交通事故对旅行时间的影响.仿真结果表明:引入自动货车车道改变了New Tomei-Meishin高速公路及该路网中其它高速公路的交通量,缩短了旅行时间,提高了安全性.应在大范围公路网络中分析自动货车车道系统,从而获得更精确的评价.

关键词：公路运输自动货车车道混合仿真器大范围公路网络城际高速公路

Impact of Electric Vehicles on Travel and Electricity Demand in Metropolitan Area： A Case Study in Nagoya

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Journal of Civil Engineering and Architecture 2015年第3期9卷 341-349页

作者： Ryo Kanamori takayuki morikawa Masaya Okumiya Toshiyuki Yamamoto takayuki Ito Institute of Innovation for Future Society Nagoya University Nagoya 464-8603 Japan Department of Environmental Engineering and Architecture Nagoya University Nagoya 464-8603 Japan Eco Topia Science Institute Nagoya University Nagoya 464-8603 Japan Department of Computer Science and Engineering Nagoya Institute of Technology Nagoya 466-8555 Japan

In this study, we examine the impacts that EVs （electric vehicles） have on vehicle usage patterns and environmental improvements, using our integrated travel demand forecasting model, which can simulate an individual activity-travel behavior in each time period, as well as consider an induced demand by decreasing travel cost. In order to examine the effects that charging/discharging have on the demand in electricity, we analyze scenarios based on the simulation results of the EVs＇ parking location, parking duration and the battery state of charge. From the simulation, result under the ownership rate of EVs in the Nagoya metropolitan area in 2020 is about 6%, which turns out that the total CO2 emissions have decreased by 4% although the situation of urban transport is not changed. After calculating the electricity demand in each zone using architectural area and basic units of hourly power consumption, we evaluate the effect to decrease the peak load by V2G （vehicle-to-grid）. According to the results, if EV drivers charge at home during the night and discharge at work during the day, the electricity demand in Nagoya city increases by approximately 1%, although changes in each individual zone range from -7% to ＋8%, depending on its characteristics.

关键词： Electric vehicle integrated travel demand forecasting model electricity demand V2G.

Understanding the Effects of Various Factors on the Public Response to Congestion Charge: A Latent Class Modeling Approach

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Journal of Transportation Technologies 2015年第2期5卷 76-87页

作者： Sugiarto Sugiarto Tomio Miwa Hitomi Sato takayuki morikawa Department of Civil Engineering Syiah Kuala University Darussalam Banda Aceh Indonesia EcoTopia Science Institute Nagoya University Nagoya Japan Institute of Innovation for Future Society Nagoya University Nagoya Japan

The standard ordered response model (SORM) is a common disaggregate approach with ordered outcomes in which the effects of various exogenous attributes are assumed constant across ordinal choices. In this study, an innovative latent class based generalized ordered response model (LC-GORM) is formulated and used to assess the effects of various factors on respondents’ choice behavior with respect to congestion charge proposal for Jakarta, Indonesia. The proposed model probabilistically assigns respondents into selfish and altruistic class memberships (latently) based on their knowledge of the proposed scheme and their specific attributes. Aiming to capture observable preference heterogeneity across ordinal choices and allow the thresholds to be varied across observations, we parameterize the thresholds as a linear function of the exogenous variables for each ordinal preference. Using stated preference data collected in Jakarta in December 2013, we incorporate the influence of a comprehensive set of explanatory variables into four categories: charges, latent variables related to respondent’s psychological motivations, mobility attributes and socio-demographic characteristics. Empirical results obviously verify the existence of preference heterogeneity across outcomes. The findings confirm that the altruistic class are more sensitive with respect to acceptance of the scheme, while the selfish class are more sensitive with respect to rejection. The key factors influencing public acceptability include the charge level and respondent variables such as car dependency, awareness of the problem of cars in society, frequency of visits to the city center and frequency of private mode usage.

关键词： Respondent’s Choice Behavior Latent Types of Respondents Latent Class Congestion Charge

Zn Dissolution-Passivation Behavior with ZnO Formation via In Situ Characterizations

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Energy & Environmental Materials 2024年第1期7卷 193-200页

作者： Tanyanyu Wang Masahiro Kunimoto Masahiro Yanagisawa Masayuki Morita Takeshi Abe takayuki Homma Graduate School of Advanced Science and Engineering Waseda University1-104 TotsukamachiShinjuku-kuTokyo 169-8050Japan Office of Society-Academia Collaboration for Innovation Kyoto UniversityGokashoUji 611-0011Japan Graduate School of Engineering Kyoto UniversityKyoto daigaku-katsuraNishikyo-kuKyoto 615-8510Japan

In this study,ZnO formation during the dissolution-passivation process of Zn anodes is observed via in situ Raman and optical *** Zn passivation during galvanostatic anodization merely follows the dissolution-precipitation model,whereas that of potentiodynamic polarization exhibits different behaviors in different potential ***,the Zn electrode is gradually covered by a ZnO precipitation film and then undergoes solid-state oxidation at~255 *** starting point of solid-state oxidation is well indicated by the abrupt current drop and yellow coloration of the electrode *** the pseudo passivation,an intense current oscillation is ***,blink-like color changes between yellow and dark blue are revealed for the first time,implying that the oscillation is caused by the dynamic adsorption and desorption of OH *** as-formed ZnOs then experience a dissolution-reformation evolution,during which the crystallinity of the primary ZnO film is improved but the solid-state-formed ZnO layer becomes rich in oxygen ***,oxide densification is realized,contributing to the Zn *** study provides new insights into the Zn dissolution-passivation behavior,which is critical for the future optimization of Zn batteries.

关键词： in situ characterization Zn dissolution and passivation ZnO formation

Injury/ischemia-induced stem cells: up-to-date knowledge and future perspectives for neural regeneration

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Neural Regeneration Research 2025年第3期20卷 797-798页

作者： takayuki Nakagomi Institute for Advanced Medical Sciences Hyogo Medical UniversityNishinomiyaJapan Department of Therapeutic Progress in Brain Diseases Hyogo Medical UniversityNishinomiyaJapan

Brain injuries like ischemic stroke induce endogenous stem cell production. Although the precise traits of stem cells in pathological brains remain unclear, we previously demonstrated that injury/ischemia-induced stem... 详细信息

关键词： ischemia injuries

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日本低碳交通发展策略简析

综合运输 2015年第6期37卷 57-65页

作者：刘欢森川高行李洁交通运输部公路科学研究院北京100088 公路交通环境保护技术交通行业重点实验室北京100088 日本名古屋大学名古屋4648601

作为温室气体排放大国,日本在过去20年间一直致力于减少CO2排放量和应对全球温室效应问题。本文总结介绍在日本国家环境对策的指导下,交通运输部门为实现削减CO2排放量所提出的地球温暖化对策,并列举部分城市的低碳交通政策实例,提出对... 详细信息

作为温室气体排放大国,日本在过去20年间一直致力于减少CO2排放量和应对全球温室效应问题。本文总结介绍在日本国家环境对策的指导下,交通运输部门为实现削减CO2排放量所提出的地球温暖化对策,并列举部分城市的低碳交通政策实例,提出对我国交通发展的建议,以供我国有关低碳发展、节能减排的相关人士参考。

关键词：日本低碳交通策略温室效应

Monogenic gene therapy for glaucoma and optic nerve injury

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Neural Regeneration Research 2025年第3期20卷 815-816页

作者： Chikako Harada Xiaoli Guo takayuki Harada Visual Research Project Tokyo Metropolitan Institute of Medical ScienceTokyoJapan

The prevalence of glaucoma, the second leading cause of global blindness, is increasing due to aging populations. In glaucoma, degeneration of the optic nerve and retinal ganglion cells(RGCs) causes visual field defec... 详细信息

关键词： visual glaucoma degeneration