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RISS 인기검색어
- 검색키워드
- 저자 : Toshihiko Oda (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
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Application of Driving Simulator to Dilemma Zone Experiments
Toshihiko Oda,Yoshihiro Suda,Shinji Tanaka,Daisuke Yamaguchi 한국자동차공학회 2008 한국자동차공학회 Symposium Vol.2008 No.9
At the onset of the yellow interval, a driver approaching a signalized intersection has to decide to either stop if he has enough distance or proceed to cross the stop line. A dilemma zone refers to a highly hazardous situation where an abrupt braking may cause a rear-end collision if a driver stops and an angle collision may occur if he crosses the intersection. To prevent drivers from being caught in the dilemma zone, a traffic signal control method called Dilemma-Free was introduced. In this method, there is an important issue about the model of driver/vehicle behaviors involving the reaction time of a driver to take braking actions and the deceleration rate of a vehicle. This paper describes a study of stopping behavior of drivers in the dilemma zones. With the use of a Driving Simulator, experiments were conducted to extract driver model parameters under dilemma zone situations. Results show that the reaction time depends heavily on various details of traffic situations. It is confirmed that the driver’s decision in a dilemma zone is influenced by the vehicle’s distance to the stop line, the approach speed and the indication of pedestrian signal.
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Funayama, Akinori,Kojima, Taku,Yoshizawa, Michiko,Mikami, Toshihiko,Kanemaru, Shohei,Niimi, Kanae,Oda, Yohei,Kato, Yusuke,Kobayashi, Tadaharu Korean Association of Maxillofacial Plastic and Re 2017 Maxillofacial Plastic Reconstructive Surgery Vol.39 No.-
Background: Mandibular reconstruction is performed after segmental mandibulectomy, and precise repositioning of the condylar head in the temporomandibular fossa is essential for maintaining preoperative occlusion. Methods: In cases without involvement of soft tissue around the mandibular bone, the autopolymer resin in a soft state is pressed against the lower border of the mandible and buccal and lingual sides of the 3D model on the excised side. After hardening, it is shaved with a carbide bar to make the proximal and distal parts parallel to the resected surface in order to determine the direction of mandibular resection. On the other hand, in cases that require resection of soft tissue around the mandible such as cases of a malignant tumor, right and left mandibular rami of the 3D model are connected with the autopolymer resin to keep the preoperative position between proximal and distal segments before surgical simulation. The device is made to fit the lower border of the anterior mandible and the posterior border of the mandibular ramus. The device has a U-shaped handle so that adaptation of the device will not interfere with the soft tissue to be removed and has holes to be fixed on the mandible with screws. Results: We successfully performed the planned accurate segmental mandibulectomy and the precise repositioning of the condylar head by the device. Conclusions: The present technique and device that we developed proved to be simple and useful for restoring the preoperative condylar head positioning in the temporomandibular fossa and the precise resection of the mandible.
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