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- 저자 : Yusuke Kuroda (검색결과 3 건)
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Hironobu Sakaura,Toshitada Miwa,Tomoya Yamashita,Yusuke Kuroda,Tetsuo Ohwada 대한척추외과학회 2016 Asian Spine Journal Vol.10 No.4
Study Design: Clinical case series. Purpose: In the posterior lumbar interbody fusion (PLIF) procedure in our institute, the cephalad screw trajectory follows a mediolateral and caudocephalad directed path according to the original cortical bone trajectory (CBT) method. However, the starting point of the caudal screw is at the medial border of the pedicle on an articular surface of the superior articular process, and the trajectory takes a mediolateral path parallel to the cephalad endplate. The incidence of caudal screw loosening after PLIF with this modified CBT screw method was investigated, and significant risk factors for caudal screw loosening were evaluated. Overview of Literature: A biomechanical study of this modified caudal screw trajectory using the finite element method reported about a 20% increase in uniaxial yield pullout load compared with the traditional trajectory. However, there has been no clinical study concerning the fixation strength of this modified caudal screw trajectory. Methods: The subjects were 193 consecutive patients who underwent single-level PLIF with modified CBT screw fixation. Caudal screw loosening was checked in computed tomography at 6 months after surgery, and screw loosening was defined as a radiolucency of 1 mm or more at the bone-screw interface. Results: The incidence of caudal screw loosening after lumbosacral PLIF (46.2%) was significantly higher than that after floating PLIF (6.0%). No significant differences in sex, brand of the instruments, and diameter and length of the caudal screw were evident between patients with and without caudal screw loosening. Patients with caudal screw loosening were significantly older at the time of surgery than patients without caudal screw loosening. Conclusions: Fixation strength of the caudal screw after floating PLIF with this modified CBT screw technique was sufficiently acceptable. Fixation strength after the lumbosacral procedure was not.
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Lane-Changing Feature Extraction Using Multisensor Integration
Hanwool Woo,Yonghoon Ji,Hitoshi Kono,Yusuke Tamura,Yasuhide Kuroda,Takashi Sugano,Yasunori Yamamoto,Atsushi Yamashita,Hajime Asama 제어로봇시스템학회 2016 제어로봇시스템학회 국제학술대회 논문집 Vol.2016 No.10
We propose a feature extraction method for lane changes of other traffic participants. According to previous research, over 90 % of car crashes are caused by human mistakes, and lane changes are the main factor. Therefore, if an intelligent system can predict a lane change and alarm a driver before another vehicle crosses the center line, this can using the multisensor system which consists of a position sensor and a laser scanner with line markings information. For a lane change prediction of other traffic participants, the most effective features are a lateral position and velocity with respect to a center line. We installed the sensor system to the primary vehicle and measured positions of other traffic participants while the primary vehicle drives on a highway. We extracted the features as the distance with respect to the center line and the lateral velocity of other vehicles using the measurement data. We confirmed that our feature extraction method has an enough accuracy for the lane change prediction.
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Doi, Yoji,Takai, Azusa,Sakamoto, Yasuhiro,Terasaki, Osamu,Yamauchi, Yusuke,Kuroda, Kazuyuki Royal Society of Chemistry 2010 Chemical communications Vol.46 No.34
<P>We demonstrate facile synthesis of mesoporous Pt replicas using double gyroid mesoporous silica (KIT-6) with different pore diameters <I>via</I> vapor infiltration of a reducing agent. Through controlling the complementary pore size, it becomes possible to selectively deposit Pt into one side pore of the <I>Ia</I>3&cmb.macr;<I>d</I> bicontinuous structure, thereby forming a mesoporous Pt replica with relatively large mesopores (over 10 nm).</P> <P>Graphic Abstract</P><P>Through controlling the complementary pore size, it becomes possible to selectively deposit Pt into one side pore of bicontinuous structure. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c0cc01196g'> </P>
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