研究者詳細 - 山本　俊行

論文 - 山本　俊行

分割表示 474 件中 261 - 280 件目／全件表示 >>

コミュニティバスの利用促進にバスマップが果たしうる役割に関する研究

杉浦栄紀，三輪富生，森川高行，山本俊行，加藤博和

土木計画学研究・講演集 35 巻頁： CD-ROM 2007年

情報の信頼性と収集頻度を考慮したプローブカーの最適配置計画

石黒洋介，三輪富生，山本俊行，森川高行

土木計画学研究・講演集 35 巻頁： CD-ROM 2007年

統合型交通支援システムによる情報提供と行動変化の分析

薄井智貴，剱持千歩，佐藤仁美，森川高行，山本俊行，三輪富生

35 巻頁： CD-ROM 2007年

Fundamental study on new road pricing format from the perspective of acceptability 査読有り

Ando, A., Morikawa, T., Miwa, T. and Yamamoto, T.

Proceedings of the 14th World Congress on Intelligent Transport Systems 頁： CD-ROM 2007年

Cost-effectiveness in probe vehicle systems 査読有り

Liu, K., Yamamoto, T., Li, Q. and Morikawa, T.

Journal of Eastern Asia Society for Transportation Studies 7 巻頁： 116-127 2007年

情報探索アプローチと費用便益アプローチを統合した買い物場所選択肢集合の拡大過程に関する実証分析査読有り

李成・山本俊行・森川高行

土木学会論文集 63 巻 ( 1 ) 頁： 45-54 2007年

記述言語：日本語掲載種別：研究論文（学術雑誌）

選択肢集合の拡大過程を対象に，情報処理アプローチと費用便益アプローチの知見を整理し，それぞれのアプローチの核心的な部分を抽出して，一つに統合した概念モデルを提案した．そして，買い物などの非日常交通の目的地選択問題に適用して，行動データと心理データを併用し，概念モデルの検証を行った．結果より，費用便益アプローチに基づき提案した選択肢集合拡大前後の期待効用の増分が選択肢集合の拡大に正の影響を与える；情報探索アプローチに基づき提案した現有選択肢に対する満足度が情報探索の活発さに影響する；選択肢集合拡大の便益が高い場合でも情報探索が伴わないと新選択肢への関心が発生しないという三つの仮説が同時に支持され，両アプローチの有効な融合が実現できた．

自動車共同利用による車両数削減可能性に関する分析査読有り

山本俊行・木内大介・森川高行

土木学会論文集 63 巻 ( 1 ) 頁： 14-23 2007年

担当区分：筆頭著者記述言語：日本語掲載種別：研究論文（学術雑誌）

セカンドカー型自動車共同利用システムを対象として，世帯内での自動車利用の最適化を考慮した上で自動車共同利用システムの潜在需要を分析した．その際，現状の利用状況や利用意向からの需要予測ではなく，一定の条件を満たすトリップが共同利用システムを利用するとの仮定に基づく潜在需要の推計を行った．愛知県豊田市を対象とした分析結果から，世帯内で利用を最適化すると平日で約35％，休日で約55％の保有自動車を削減可能であることが示された．また，共同利用システム導入時の需要規模は10世帯に1台，1台で1日3トリップ程度と計算された．さらに，軽自動車保有世帯や人口密度の高い駅周辺地域の方が共同利用システムの潜在需要が大きいことが示された．

多様な意思決定方略のモデリング

山本俊行

都市計画 55 巻 ( 6 ) 頁： 36-41 2006年11月

Mode choice analysis with imprecise location information

Yamamoto, T. and Komori, R.

Proceedings of 11th International Conference on Travel Behaviour Research 頁： CD-ROM 2006年8月

Advances in choice modeling and Asian perspectives

Yamamoto, T., Hyodo, T. and Muromachi, Y.

Proceedings of 11th International Conference on Travel Behaviour Research 頁： CD-ROM 2006年8月

An empirical model of the acquisition of new alternatives into choice set combining information processing approach with cost-benefit approach

Li, C., Yamamoto, T. and Morikawa, T.

Proceedings of 13th Recent Advances in Retailing & Services Science Conference 頁： CD-ROM 2006年7月

Inter-temporal and inter-regional analysis of household behaviors on car and motorcycle ownership in Asian metropolitan cities: bivariate ordered probit modeling approach

Nobuhiro Sanko, Dilum Dissanayake, Shinya Kurauchi, Hiroaki Maesoba, Toshiyuki Yamamoto and Taka Morikawa

Conpendium of Papers CD-ROM of the 85th Annual Meeting of the Transportation Research Board 頁： CD-ROM 2006年1月

記述言語：英語

This study investigates the household behavior on car and motorcycle ownership in Asian metropolitan cities of Nagoya, Bangkok, Kuala Lumpur, and Manila. The household attitudes and behaviors on vehicle ownership are modeled using bivariate ordered probit (BOP) models. The accessibility is generally known to be correlated with vehicle ownership decisions. Accordingly, the accessibility is incorporated as an input for the proposed vehicle ownership model to explore the potential relationship among them. The mode choice models for the cities concerned were initially developed to quantify the accessibility variables that were later integrated into the vehicle ownership models. Inter-temporal and inter-regional comparison, and temporal and spatial transferability analysis have brought insights into the vehicle ownership modeling.

多様な意思決定方略のモデリング

山本俊行

都市計画 55 巻 ( 6 ) 頁： 36-41 2006年

How routine is a routine? an analysis of the day-to-day variability in prism vertex location 査読有り

Ryuichi Kitamura, Toshiyuki Yamamoto, Yusak O. Susilo and Kay W. Axhausen

Transportation Research Part A 40 巻頁： 259-279 2006年

記述言語：英語掲載種別：研究論文（学術雑誌）

This study is concerned with how routine an individual's routine really can be. This question is addressed by examining the day-to-day variability of the time coordinate of the vertex of a time-space prism; in other words, by examining how the timeframe which governs the individual's daily schedule varies from day to day. When the timeframe varies, it is likely that the individual's behavior also varies. When the timeframe is stable, on the other hand, a routine can be maintained. The analysis presented in this paper attempts to determine how much of the variation in travel is due to the variation in the timeframe. The origin vertices of workers' morning prisms, which determine how early they can leave home in the morning, are examined in this study, along with the departure times of the first trips in the prisms, which are mostly supposedly routine commute trips. The results indicate that the vertices are located with a much smaller variance, but vary more systematically than do the departure times of the first trips in the prisms. This implies that a large degree of variability is introduced when a trip is made within the timeframe as determined by a prism vertex. It is also shown that the departure time varies from worker to worker according to unobserved heterogeneity—i.e., unexplained differences across individuals—much more than does the prism vertex. The study results indicate that large degrees of flexibility are associated with trip making, and suggest the presence of room for behavioral modification with respect to workers' first trips in the morning.

An analysis of the cost efficiency of probe vehicle data at different transmission frequencies 査読有り

Kai Liu, Toshiyuki Yamamoto and Takayuki Morikawa

International Journal of ITS Research 4 巻頁： 21-28 2006年

記述言語：英語掲載種別：研究論文（学術雑誌）

Probe vehicles are promising tools for collecting travel time data because of their ability to provide large amounts of real-time information. However, there are many obstacles to the practical deployment of probe vehicles, one of which is the enormous expense of data transmission. This study attempts to assess the effects of differing transmission intervals (and therefore costs) on the quality of travel time data collected. Two accuracy/error values are examined: map-matching accuracy and the mean absolute percent error (MAPE) of link travel information. In order to determine the most cost-effective probe transmission frequency, the accuracy elasticity of cost is compared for six different ratios of data transmission charge to total communication cost.

Study on the cost-effectiveness of a probe vehicle system at lower transmission frequencies

Kai Liu, Toshiyuki Yamamoto and Takayuki Morikawa

Proceedings of 5th ITS Symposium 2006 頁： 335-340 2006年

記述言語：英語

One serious problem of continuous large-scale data collection with probe vehicle is the dilemma of balancing the cost economization and system reliability improvements. The polling frequency is found to be the major factor that determines the operation cost of a probe vehicle-based traffic data collection system. This paper focuses on evaluating the cost-effectiveness of probe data at various space-based intervals, which are expected to provide roadway travel time estimation at certain reliability. The proposed optimization framework concentrates on the least total operation cost by combining the polling frequency and the required probe size, which gives a simple and valuable solution on the issue of cost-effective traffic data collection.

Improving the method of link travel time measurement from infrequent probe data

Kai Liu, Toshiyuki Yamamoto and Takayuki Morikawa

Proceedings of Infrastructure Planning 34 巻頁： CD-ROM 2006年

カーシェアリングが自動車保有および交通行動に及ぼす影響の分析

山本俊行，成瀬弘恵，森川高行

土木計画学研究・講演集 34 巻頁： CD-ROM 2006年

Estimating delay time at signalized intersections by probe vehicles 査読有り

Liu, K., Yamamoto, T. and Morikawa, T.

Proceedings of ICTTS 2006 頁： 644-655 2006年

An analysis of effects of rainfall on travel speed at signalized surface road network based on probe vehicle data 査読有り

Wang, L., Yamamoto, T., Miwa, T. and Morikawa, T.

Proceedings of ICTTS 2006 頁： 615-624 2006年

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