Search Results 1-20 of 53

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  • A Study of Evacuation Plan considering Road Disruption Measures in Densely Built-up Wooden Areas in a Large-Scale Earthquake  [in Japanese]

    SAKAMOTO Jun , IWAI Ren , NAGATA Nozomu

    <p>木造密集地域で大規模地震が発生した場合，家屋の倒壊による道路の閉塞が避難行動を阻害する可能性がある．自治体では倒壊の恐れがある家屋に対して耐震化等の対策を行っているが，近年の厳しい財政状況から十分に対応できていない．</p><p>本研究では，国勢調査，デジタル道路地図，および各区間の道路閉塞率から，地域内の住民が発災後に避難場所まで到達できる可能性を算出す …

    JSTE Journal of Traffic Engineering 7(2), A_263-A_269, 2021

    J-STAGE 

  • METHOD FOR EXTRACTING VULNERABLE ACCESSIBILITY ROADSIDE AREAS AFTER A LARGE EARTHQUAKE  [in Japanese]

    TAGASHIRA Maki , OSARAGI Toshihiro

    … The one is the road blockage model that describes the collapse of each roadside building based on the construction year and the structure of each building, and describes the road blockage based on the collapse situation of roadside buildings. …

    Journal of Architecture and Planning (Transactions of AIJ) (775), 1965-1973, 2020-09

    J-STAGE  AIJ 

  • Tsunami evacuation simulation considering road blockage by collapsed buildings evaluated from predicted strong ground motion

    Ito Eri , Kawase Hiroshi , Matsushima Shinichi , Hatayama Michinori

    … In this study, in order to clarify the effect of building damage on a tsunami evacuation, we first predicted building damage based on the nonlinear response analysis for a realistic strong ground motion and then simulated a tsunami evacuation considering road blockage due to the collapsed buildings. …

    Natural Hazards 101(3), 959-980, 2020-04

    IR 

  • EXTRACTION METHOD OF IMPORTANT ROAD SECTIONS TO REDUCE ISOLATION RISK DURING EARTHQUAKE IN A MOUNTAINOUS AREA  [in Japanese]

    HIBI Keishin , ONO Yusuke

    <p>　中山間地において地震時の斜面崩壊により引き起こされる道路閉塞で集落の孤立が発生することがある．本研究では，このような集落の孤立リスクを低減するための対策を行う際に，優先されるべき道路区間を体系的に抽出する手法を開発した．道路ネットワークをノードとリンクから構成されるグラフにモデル化し，各リンクのクリティカル度を求める．クリティカル度は，そのリンクが閉塞した際に孤立する人口に閉塞 …

    Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE)) 76(4), I_454-I_460, 2020

    J-STAGE 

  • ACCESSIBILITY EVALUATION OF SPECIFIC EMERGENCY TRANSPORTATION ROADS AND EFFECTS OF QUAKE-RESISTANT-CONVERSION OF ROADSIDE BUILDINGS  [in Japanese]

    OSARAGI Toshihiro , KISHIMOTO Maki

    … The one is the road blockage model that describes the collapse of each roadside building based on the Is-value (Seismic Index of Structure) of each building, and describes the road blockage based on the estimated effective width of each road in front of collapsed buildings. …

    Journal of Architecture and Planning (Transactions of AIJ) (764), 2175-2182, 2019-10

    J-STAGE  AIJ 

  • Critical Road Link Detection under the Permissible Evacuation Time  [in Japanese]

    YUZE Hiroaki , MUTO Nobuaki , SAITO Kazumi

    … <p>We address the problem of detecting critical links in a large road network, especially focusing on the fact that reachability within a permissible time plays an important role in case of disaster evacuation. … In our computer simulation using data in Shizuoka Prefecture, we show that the road links having highly ranked TBC degree can substantially change according to the permissible evacuation time. …

    Journal of Social Safety Science 35(0), 225-232, 2019

    J-STAGE 

  • Analysis of Building Damages Using Aerial Images for Detecting Road Blockage  [in Japanese]

    遠藤 史也 , 佐治 斉

    <p>地震発生時における初動対応として、広域における被災状況の把握は重要であり、リモートセンシング技術の活用は有効である。特に、近年活用が期待されているドローンや航空機などを利用した空撮画像は、衛星画像と比較して天候状況による制約、分解能、および迅速性などの側面から有効であると考えられる。また被災状況の把握における建物被害の解析は、瓦礫などによる道路閉塞の検知や復興期における罹災証明の …

    Record of Joint Conference of Electrical and Electronics Engineers in Kyushu 2019(0), 282-283, 2019

    J-STAGE 

  • STUDY ON EVACUATION INDUCTION DURING TSUNAMI DISASTER AND REGIONAL VULNERABILITY ASSESSMENT  [in Japanese]

    SAKATA Yusuke , YAMAMOTO Masato , ARIKAWA Taro

    <p>　避難施設まで円滑な避難を行うために，避難開始前に得られる津波浸水情報とGIS情報に着目した．そこで本研究では，津波到達時間や道路閉塞の事前情報が避難行動へ及ぼす影響について検証を行う．また，使用度の高い経路や，初期位置における死亡率から，津波に対する脆弱性を評価する．津波浸水情報とGIS情報を事前予測情報として避難者に与えることで，津波による死亡や，道路閉塞による再経路探索を行 …

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 75(2), I_1357-I_1362, 2019

    J-STAGE 

  • EFFECTIVE EARTHQUAKE COUNTERMEASURES ABOUT EVACUATION ROUTES ADOPTING TSUNAMI EVACUATION CALCULATION  [in Japanese]

    KITAMURA Fukutaro , INAZU Daisuke , IKEYA Tsuyoshi , OKAYASU Akio

    <p>　著者は前報で避難中に津波に遭遇しない条件で移動開始までの時間的猶予が最大となる経路選択により被災者を最小化できることを示した．しかしこれは選択経路が地震で閉塞されないことが前提であるが，地域の道路すべての地震対策には時間を要する．本研究では経路閉塞の影響を定量的に評価し，影響が大きい個所を優先的に対策する効果を示す．検討の結果，斜面沿いの道路や電柱やブロック塀があることから地震 …

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 75(2), I_1375-I_1380, 2019

    J-STAGE 

  • Deep-Reinforcement-Learning-Based Distributed Vehicle Position Controls for Coverage Expansion in mmWave V2X

    TAYA Akihito , NISHIO Takayuki , MORIKURA Masahiro , YAMAMOTO Koji

    … <p>In millimeter wave (mmWave) vehicular communications, multi-hop relay disconnection by line-of-sight (LOS) blockage is a critical problem, particularly in the early diffusion phase of mmWave-available vehicles, where not all vehicles have mmWave communication devices. … This paper proposes a distributed position control method to establish long relay paths through road side units (RSUs). …

    IEICE Transactions on Communications E102.B(10), 2054-2065, 2019

    J-STAGE 

  • Transportation of relief supplies and evacuation of residences in the case of Nankai megathrust earthquakes  [in Japanese]

    Tanaka Koichi

    <p>I. 研究目的と背景</p><p>本研究は，南海トラフ巨大地震が発生した際における，本州から四国地方の広範囲へのプッシュ型救援物資輸送について，道路輸送面におけるアクセス困難性を定量的に明らかにする．地震による土砂災害と津波浸水による道路閉塞のリスクを反映した道路ネットワークを用いて，本州から広域物資拠点への輸送シミュレーションを行った．具体的には，地震・ …

    Proceedings of the General Meeting of the Association of Japanese Geographers 2019a(0), 15, 2019

    J-STAGE 

  • Improving Safety of Tsunami Evacuation by Utilizing Low-use Land of a Fishery Village:The Case of Heda Area, Numazu City  [in Japanese]

    ANDO Hiroshi , IKEDA Hirotaka

    … In this study, we evaluated the safety of tsunami evacuation by measuring the time margin of evacuation with consideration of road blockage due to building collapse in the assumed flooded area of Heda district. …

    Journal of Social Safety Science 33(0), 199-206, 2019

    J-STAGE 

  • Optimal Mobility Control of Sensors in the Event of a Disaster

    Nakamura Yuichi , Ito Masaki , Sezaki Kaoru

    … We considered a way of controlling the mobility of such sensor nodes under limitation of its mobility, caused by road blockage, for example. …

    Journal of Disaster Research 14(3), 500-507, 2019

    J-STAGE 

  • Effects of aflatoxin B<sub>1</sub> on the cell cycle distribution of splenocytes in chickens

    Li Hang , Su Gang , Chen Zhengli , Guan Ke , Zuo Zhicai , Wang Fengyuan , Peng Xi , Fang Jing , Cui Hengmin , Zhou Yi , Ouyang Ping

    … could induce cell cycle blockage at G<sub>0</sub>G<sub>1</sub> …

    Journal of Toxicologic Pathology 32(1), 27-36, 2019

    J-STAGE  Ichushi Web 

  • Breaking the Blockage for Big Data Transmission: Gigabit Road Communication in Autonomous Vehicles

    ZHANG Chaofeng , OTA Kaoru , JIA Juncheng , DONG Mianxiong

    … Previous studies assumed that these bands are not suitable for vehicle communications due to the short range and high rate of blockage. … Therefore, in this article, we draw a potential map of THz vehicle transmission for autonomous vehicles to break the blockage of short-range and unstable links. … Then we propose an autonomous relay algorithm called ATLR for the gigabit-level communication in the high-speed road environment. …

    IEEE Communications Magazine 56(6), 152-157, 2018-06-18

    IR 

  • Study on reachable area to evacuation center considering road blockage at the time of compound disasters in wooden residential dense area  [in Japanese]

    大根田 有希

    … In this study, we analyze and compare evacuation routes in consideration of inundation caused by river flooding in addition to evacuation routes when road blockage caused by collapsed wooden buildings, and how to increase evolvable areas by considering how to examine the effect. …

    法政大学大学院紀要. デザイン工学研究科編 = 法政大学大学院紀要. デザイン工学研究科編 (7), 1-8, 2018-03-24

    IR  DOI 

  • A STUDY ON ROAD- CLEARING OPERATION AFTER A LARGE-SCALE EARTHQUAKE  [in Japanese]

    今長 信浩 , 片岡 正次郎

    インフラ・ライフライン減災対策シンポジウム講演集 Proceedings of the Simposium on Disaster Mitigation and Resilience of the Infrastructures and Lifeline Systems 8, 89-94, 2018-01-19

  • Path Loss Model Considering Blockage Effects of Traffic Signs Up to 40GHz in Urban Microcell Environments

    SASAKI Motoharu , INOMATA Minoru , YAMADA Wataru , KITA Naoki , ONIZAWA Takeshi , NAKATSUGAWA Masashi , KITAO Koshiro , IMAI Tetsuro

    … <p>This paper presents the characteristics of path loss produced by traffic sign blockage. … It is shown that the measured path loss increases compared to free space path loss even on a straight line-of-sight road, and that the excess attenuation is caused by the blockage effects of traffic signs. … It is also shown that the measurement area affected by the blockage becomes small as frequency increases. …

    IEICE Transactions on Communications E101.B(8), 1891-1902, 2018

    J-STAGE 

  • Road Network Evaluation from the Viewpoint of Fire Extinguishing, Fire Spread, and Evacuation to Plan Improvement of District Seismic Safety  [in Japanese]

    KAWANISHI Yosuke , KOHIYAMA Masayuki

    <p>建物倒壊による道路閉塞は，地域住民の避難，消防機関による消火・救援活動等を阻害し，延焼による被害を拡大する要因ともなる．本論では消火確率・非延焼棟数比・避難達成率の3つの指標で，地域の防災力を評価する方法を提案する．指標の評価においては建物倒壊率，出火確率などをもとにモンテカルロ法を用いて行う．格子状道路と放射環状道路の2つの仮想地区に対し提案指標を評価した結果，提案指標が街路網 …

    Journal of Japan Association for Earthquake Engineering 18(2), 2_35-2_50, 2018

    J-STAGE 

  • STUDY ON THE WATER DRAWING ACTIVITY BY THE DISASTER VICTIMS AND THE WATERSIDE SPACE OF THE CITY RIVER:The case of the Umeda river in Sendai city during the great East Japan earthquake  [in Japanese]

    YASOKAWA Jun

    … This fact showed that an everyday river experience led to an understanding of water-drawer-activity enforcement the time of the earthquake disaster.<br> 7) Users came from distant areas to the waterside adjacent to a major road with much traffic. …

    Journal of Architecture and Planning (Transactions of AIJ) (738), 2163-2171, 2017-08

    J-STAGE  AIJ 

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