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A robot manipulator on the mobile platform for an off-road environment
Chanhun Park,Dongil Park,GwangJo Jung,Doohyung Kim,KyungTaik Park,Chulhun Park,Taeyong Choi 제어로봇시스템학회 2014 제어로봇시스템학회 국제학술대회 논문집 Vol.2014 No.10
Need for the robot-manipulator on the mobile robot is increasing. If the mobile manipulator is used in the on-road environment, the design concept of the manipulator is not different. But if it is designed for an off-road environment, it has to be designed to get over the vibrational forces induced by the off-road traveling. For the mobile platform, the design concept and process have been developed by many researchers, but for the manipulator on the mobile robot for an off-road environment, enough researches have not been done. For this reason, the authors are developing the design concept of the off-road manipulator. In this paper, the research results of the design of a robot manipulator on the mobile platform for an off-read environment will be introduced.
Park, Taeyong,Baek, Minkyung,Lee, Hasup,Seok, Chaok John Wiley Sons, Inc. 2019 Journal of computational chemistry Vol.40 No.27
<P>Protein–protein docking methods are spotlighted for their roles in providing insights into protein–protein interactions in the absence of full structural information by experiment. GalaxyTongDock is an <I>ab initio</I> protein–protein docking web server that performs rigid‐body docking just like ZDOCK but with improved energy parameters. The energy parameters were trained by iterative docking and parameter search so that more native‐like structures are selected as top rankers. GalaxyTongDock performs asymmetric docking of two different proteins (GalaxyTongDock_A) and symmetric docking of homo‐oligomeric proteins with C<SUB>n</SUB> and D<SUB>n</SUB> symmetries (GalaxyTongDock_C and GalaxyTongDock_D). Performance tests on an unbound docking benchmark set for asymmetric docking and a model docking benchmark set for symmetric docking showed that GalaxyTongDock is better or comparable to other state‐of‐the‐art methods. Experimental and/or evolutionary information on binding interfaces can be easily incorporated by using block and interface options. GalaxyTongDock web server is freely available at <url href='http://galaxy.seoklab.org/tongdock'>http://galaxy.seoklab.org/tongdock</url>. © 2019 Wiley Periodicals, Inc.</P>
TaeYong Jung,DaeLim Park,Ji-Sub Park,Joun-Ho Lee,Sungho Kim,Byeong Koo Kim,Hak-Rin Kim IEEE 2015 Journal of display technology Vol.11 No.3
<P>We demonstrate an optimized fringe-field switching pixel structure to apply negative liquid crystals (nLCs) for high-resolution mobile displays. Pixel transmittance can be improved by applying nLCs, but the driving voltage increases because Δε of the nLC is lower than that of the positive LC (pLC). In spite of applying an nLC, a similar driving voltage can be achieved by changing the pixel structure. It is easy to obtain a low driving voltage in a strong electric field by applying a thinner passivation layer using photo acryl (PAC). In addition, while the edge electrodes of the conventional Vcom-on-top (VOT) structure are operated with in-plane switching, all electrodes of the pixel-on-top (POT) structure are operated with fringe-field switching. Therefore, the driving voltage can be reduced by applying a POT structure with PAC. Furthermore, crosstalk can be improved because the capacitance (Cdp) between data lines and pixel electrodes is reduced by applying a POT structure. As a result, applying the proposed structure with nLC has two advantages. First, transmittance increases by more than 20% based on 4.5-in-high definition pixels. Second, crosstalk in the POT structure is more stable than that in the VOT structure, despite variations in low gate voltage (VGL). Consequently, because of higher transmittance and stable crosstalk, the proposed POT structure with nLC can be used for mobile displays.</P>
Post-processing of Direct Teaching Trajectory in Industrial Robots
Taeyong Choi,Chanhun Park,Hyunmin Do,Kwangcho Chung,Dongil Park,Jinho Kyung 한국지능시스템학회 2012 INTERNATIONAL JOURNAL of FUZZY LOGIC and INTELLIGE Vol.12 No.3
Direct teaching of the industrial robot is a novel technique to easily teach manipulators. However, teaching data by human hand cannot help having large noise errors ranging from low to high frequency. To use teaching data, post-processing to correct the teaching trajectory is required. Here, a novel shape-based trajectory correction method to rebuild teaching data with the feature information of curvature and velocity is proposed. The proposed method is tested on square and circular objects.
Role of Human Papillomavirus Vaccination for Prevention of Male Infertility
Taeyong Park 대한요로생식기감염학회 2023 Urogenital Tract Infection Vol.18 No.2
The human papillomavirus (HPV) is a common sexually transmitted infection that can cause various diseases, including genital warts and malignant diseases, such as cervical, head and neck, and anal cancer. Emerging evidence suggests that a HPV infection can also adversely affect male fertility. The HPV has been detected in the semen and testicular tissues of infected individuals, indicating that the virus can directly impact the male reproductive system. Indeed, many studies showed that the HPV infection could cause sperm DNA damage, decreased sperm motility, and reduced sperm concentration, contributing to male infertility. The HPV vaccination is currently only being administered to females in Korea. On the other hand, the vaccine could help mitigate these negative impacts on male fertility by protecting males against HPV infection. This paper reviews the effects of the HPV on male fertility and the potential benefits of HPV vaccination in protecting male fertility.
최태용(Taeyong Choi),도현민(Hyun Min Do),박동일(Dong Il Park),박찬훈(Chanhun Park),김두형(Doohyung Kim),박경택(Kyung-Taik Park) Korean Society for Precision Engineering 2013 한국정밀공학회지 Vol.30 No.9
Human rights at poor working condition is the severe problem in modern manufacturing system. The industrial dual-arm robot is being developed to meet these social issues fundamentally. The dual-arm robot can work instead of human workers. We developed the new dual-arm robot for manufacturing mobile phone and TV. It has advantages such as the solo controller for both arms, the human sized body and arms. The software platform for the industrial dual-arm robot is being developed which has strength in its convenience and intelligence compared to conventional the robot software platforms. Here the development of the dual-arm robot software platform is introduced.
최태용(Taeyong Choi),도현민(Hyunmin Do),박찬훈(Chanhun Park),박동일(Dongil Park),김두형(Doohyeong Kim),경진호(Jinho Kyung) 한국생산제조학회 2016 한국생산제조학회지 Vol.25 No.6
Teaching an industrial robot is still a dangerous and time-consuming process. It is expected that a robot can track a trajectory that is repeatedly taught by a human operator. Teaching a robot in joint space is easier than that in Cartesian space or a work space because the robot will never lose its stability when it is taught and operated in a joint space. However, it is very easy for a robot to lose its stability when it is taught in a work space. This is because of the singular points problem in kinematics for manipulators. Thus, experts should teach a given task to a robot in a careful manner. A new algorithm that avoids the problem of singular points is proposed. Using this proposed method, a user can freely teach a robot without the chance of instability in an entire work space.