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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.
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>
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>
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.
Boost Converter Topology를 이용한 의료용 Q-Switched Nd
박태용(Taeyong Park),고광천(Kwangchon Ko),한광수(Kwangsu Han),김화수(Hwasu Kim),김희식(Hiesik Kim) 제어로봇시스템학회 2012 제어로봇시스템학회 합동학술대회 논문집 Vol.2012 No.7
Q-Switch Driver which is enable to perform Q-Switch of Q-Switched Nd:YAG Laser device use Fly-Back Converter Topology. Fly-Back Converter Transformer for high Voltage generation over 4KV is becoming a problem of the isolation in Transformer primary and secondary. In this Study, we confirmed high Voltage over 4KV designed by Boost Converter Topology, and measured characteristics between Fly-back Converter and Boost Converter in Q-Switched Nd:YAG Laser device. In addition, we improved isolation problem of Transformer primary and secondary. New Q-Switch Driver (Boost Converter) was confirmed potential for more compact rather than existing Q-Switch Driver (Fly-Back Converter).
김태용(Taeyong Kim),박보국(Bokuk Park),박진관(Jinkwan Park),조환규(Hwan-Gue Cho) 한국정보과학회 2016 정보과학회 컴퓨팅의 실제 논문지 Vol.22 No.9
내비게이션 시스템에서 지도 데이터를 최신 정보로 유지하는 것은 중요한 일이다. 그러나 수작업을 통한 갱신은 비용이 많이 소요될 뿐만 아니라 갱신되는 정보를 즉각적으로 반영하기 힘들다. 본 논문에서는 GPS 데이터를 이용하여 자동으로 도로를 생성해주는 시스템에서 가장 중요한 문제 중 하나인 중심 도로를 추출하는 기법에 관하여 살펴보고자 한다. 중심도로를 추출하기 위해서는 클러스터링 시킨 궤적이 필요하지만, 실제 궤적은 클러스터링 되어있지 않다. 이 문제를 해결하기 위하여 본 논문에서는 최대중첩구간 탐색과 궤적 클러스터링 과정을 통하여 효과적으로 궤적에 대해 클러스터링 하는 기법을 제안한다. 마지막으로 클러스터링 시킨 궤적에 대하여 가상달리기 기법을 적용하여 중심도로를 추출하였다. 실험데이터로는 실제 대용량의 강남구, 성남시, 서울시 전체를 지나다니는 택시 GPS 데이터를 수집하여 실험을 하였고, 실험 결과 제안기법이 실제 중심 도로를 추출하는데 안정적이고 효율적인 것을 보였다. In navigator systems, keeping map data up-to-date is an important task. Manual update involves a substantial cost and it is difficult to achieve immediate reflection of changes with manual updates. In this paper, we present a method for trajectory-center extraction, which is essential for automatic road map generation with GPS data. Though clustered trajectories are necessary to extract the center road, real trajectories are not clustered. To address this problem, this paper proposes a new method using the maximum overlapping interval and trajectory clustering. Finally, we apply the Virtual Running method to extract the center road from the clustered trajectories. We conducted experiments on real massive taxi GPS data sets collected throughout Gang-Nam-Gu, Sung-Nam city and all parts of Seoul city. Experimental results showed that our method is stable and efficient for extracting the center trajectory of real roads.