http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
( Masaki Kuwatani ),( Toru Nakamura ),( Tsuyoshi Hayashi ),( Yasutoshi Kimura ),( Michihiro Ono ),( Masayo Motoya ),( Koji Imai ),( Keisuke Yamakita ),( Takuma Goto ),( Kuniyuki Takahashi ),( Hiroyuki 대한소화기기능성질환·운동학회(구 대한소화관운동학회) 2020 Gut and Liver Vol.14 No.2
Neoadjuvant chemotherapy/neoadjuvant chemoradiotherapy (NAC/NACRT) can be performed in patients with pancreatic cancer to improve survival. We aimed to clarify the clinical outcomes of biliary drainage with a metal stent (MS) or a plastic stent (PS) during NAC/NACRT. Between October 2013 and April 2016, 96 patients with pancreatic cancer were registered for NAC/NACRT. Of these, 29 patients who underwent biliary drainage with MS or PS before NAC/NACRT and a subsequent pancreatoduodenectomy were retrospectively analyzed with regard to patient characteristics, preoperative recurrent biliary obstruction rate, NAC/NACRT delay or discontinuation rate, and operative characteristics. The median age of the patients was 67 years. NAC and NACRT were performed in 14 and 15 patients, respectively, and MS and PS were used in 17 and 12 patients, respectively. Recurrent biliary obstruction occurred in 6% and 83% of the patients in the MS and PS groups, respectively (p<0.001). NAC/NACRT delay was observed in 35% and 50% of the patients in the MS and PS groups, respectively (p=0.680). NAC/NACRT discontinuation was observed in 12% and 17% of the patients in the MS and PS groups, respectively (p=1.000). The operative time in the MS group tended to be longer than that in the PS group (625 minutes vs 497 minutes, p=0.051), and the operative blood loss volumes and postoperative adverse event rates were not different between the two groups. MS was better than PS from the viewpoint of preventing recurrent biliary obstruction, although MS was similar to PS with regards to perioperative outcomes. (Gut Liver 2020;14:269-273)
Analysis and Design of Jumping Robot System Using the Model Transformation Method
서진호,Masaki Yamakita 대한전기학회 2006 Journal of Electrical Engineering & Technology Vol.1 No.2
- This paper proposes the motion generation method in which the movement of the 3-linksthe realization of jumping control moving in a vertical direction, which mimics a cats behavior. To consider the movement from the point of the constraint mechanical system, a robotics system for realizing the motion will change its configuration according to the position. The effectiveness of the proposed scheme is illustrated by simulation and experimental results. .
Speed Control of Vehicles with Variable Valve Lift Engine by Nonlinear MPC
Akihiro Murayama,Masaki Yamakita 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
In this study, we purpose a control system of engine torque for a V6 sparkignition engine with avariable valve lift system. We apply an onlinear receding horizon control to the SICE benchmark problem where we assume that the control inputs are throttle angle, variable valve lift and ignition timing. Moreover, a fuel injection control is also developed by estimating the amount of air in the engine. We propose a vehicle speed tracking control by defining time derivative of input as new input and dealing with input constraint by transformation of input variables. Finally, we show some numerical simulation result stoverify the proposed methods.
Control Education Using Pendulum Apparatus
Hoshino, Tasuku,Yamakita, Masaki,Furuta, Katsuhisa Institute of Control 2000 Transaction on control, automation and systems eng Vol.2 No.3
The inverted pendulum is a typical example of unstable systems and has been used for verification of designed control systems. It is also very popular in control education in laboratories, serving as a good example to show the utility of the state space approach to the controller design. This paper shows two kinds of experiment using inverted pendulum: one is the stabilization of a single spherical inverted pendulum by a plane manipulator using visual feedback, and the other is the state transfer control of a double pendulum. In the former experiment, the feedback stabilization using a CCD camera has major importance as an example of controller implementation with non-contact measurement. The latter involves the standard stabilizing regulation method and nonlinear control techniques. The details of the experimental systems, the control algorithms and the experimental results will be given.
Unscented Gaussian Sum Filtering for Interval Constrained Nonlinear Systems
Shinji Ishihara,Masaki Yamakita 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
This paper addresses a state-estimation problem for nonlinear systems with non-Gaussian noise and interval constraints on the state vector. We proposed a new Gaussian sum filtering algorithm to deal with non-Gaussiannoises. Validity of the proposed method is illustrated in a numerical example.
Control of underactuated biped running robot via CPG
Hiroyuki Oyama,Masaki Yamakita,Sang-Ho Hyon,Susumu Ohtake 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
In this paper, we propose a control method which is adaptive to the environment and apply it to a biped underactuated robot named “KenkenII” which has springs mimicing a tendon system of animals soth at KenkenII can walk and run stably from zero-velocity on irregularter rains. In the proposed method, we use a CPG(CentralPatternGenerator) constructed by a neural oscillator network and realize rhythmic movements. Parameters in the control system are seached by PSO(Particle Swarm Optimization) and the validity is conformed by numerical simulation and experiment.
Analysis and Design of Jumping Robot System Using the Model Transformation Method
Suh Jin-Ho,Yamakita Masaki The Korean Institute of Electrical Engineers 2006 Journal of Electrical Engineering & Technology Vol.1 No.2
This paper proposes the motion generation method in which the movement of the 3-links leg subsystem in constrained to slider-link and a singular posture can be easily avoided. This method is the realization of jumping control moving in a vertical direction, which mimics a cat's behavior. To consider the movement from the point of the constraint mechanical system, a robotics system for realizing the motion will change its configuration according to the position. The effectiveness of the proposed scheme is illustrated by simulation and experimental results.