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프로골퍼의 퍼팅 시 거리와 성공ㆍ실패에 따른 시간 및 퍼터헤드 궤적의 일관성 분석
강동엽(Kang, Dong-Yob),염창흥(Youm, Chang-Hong) 한국체육과학회 2014 한국체육과학회지 Vol.23 No.4
The purpose of this study was to examine the consistency analysis of time and putter head trajectory on the distances and the success or failure during putting of professional golfers. The subjects who participated in this study were 9 in professional golfers(years: 29.9±4.4 yrs, height: 178.9±6.8 ㎝, weight: 78.8±15.9 ㎏; career 12.6±5.8). The elapsed time during the back swing was found that 2 m was longer than 6 m during putting. And the consistency of the elapsed time during the follow through swing was found that 2 m putting was lower than 6 m putting. The consistency of the putter head trajectory at the back swing top was found that 6 m putting was lower than 2 m or 4 m putting, but was not showed the difference of the consistency between 2 m and 4 m putting. These differences were mainly in the anteroposterior plane. And the difference of consistency between success and failure of putting showed in 2 m and 4 m respectively.
강동엽 ( Dong-yeop Kang ),최호진 ( Ho-jin Choi ) 한국정보처리학회 2007 한국정보처리학회 학술대회논문집 Vol.14 No.1
노인 복지 환경에서 혼합주도 협력(mixed-initiative collaboration)이 가능한 로봇의 지능 개발이 본 연구의 궁극적인 목표이다. 본 논문에서는 다양한 담화(discourse)으로부터 협력 과정들을 분석하여 상호 주도 협력을 위한 이슈들을 찾아내고, 이러한 주요 요소를 바탕으로 상대 인지시스템의 사용자 모델(user model)을 포함할 수 있는 상호 스크립트 모형(joint script model)을 제안하고 이를 이용한 로봇 계획법(robot planning)의 방법론과 실험에 대한 접근법을 제시한다.
이송,강동엽,이혜민,안수용,권우경,정윤수,Li, Song,Kang, Dongyeop,Lee, Hae-min,An, Su-yong,Kwon, Wookyong,Chung, Yunsu 대한임베디드공학회 2020 대한임베디드공학회논문지 Vol.15 No.6
This paper presents the design and implementation of embedded systems and autonomous path generation for autonomous speed sprayer. Autonomous Orchard Systems can be divided into embedded controller and path generation module. Embedded controller receives analog sensor data, on/off switch data and control linear actuator, break, clutch and steering module. In path generation part, we get 3D cloud point using Velodyne VLP16 LIDAR sensor and process the point cloud to generate maps, do localization, generate driving path. Then, it finally generates velocity and rotation angle in real time, and sends the data to embedded controller. Embedded controller controls steering wheel based on the received data. The developed autonomous speed sprayer is verified in test-bed with apple tree-shaped artworks.
질소와 암모니아 존재하에서 1 keV 에너지의 알곤과 수소 이온 조사에 의한 PTFE(polytetrafluoroethylene)의 표면형상 변화연구
유대환,김기환,강동엽,김중수,고석근,김현주,Yeu, Dae-Hwan,Kim, Ki-Hwan,Kang, Dong-Yeob,Kim, Joong-Soo,Koh, Seok-Keun,Kim, Hyun-Joo 한국재료학회 2006 한국재료학회지 Vol.16 No.6
Polytetrafluoroethylene (PTFE) surface was modified for improving hydrophilicity by ion irradiation in environmental gas of $N_2$ and $NH_3$, respectively. The water contact angle onto the PTFE surface increased from $104{\circ}$ to over $140{\circ}$ by Ar ion irradiation in $N_2$ gas. In the case of $NH_3$ as environmental gas, there were a slight increase of contact angle from ion dose of $1{\times}10^{15}\;to\;5{\times}10^{15}\;ions/cm^2$, and its dramatic decrease to the value of 35o at the conditions of ion dose higher than $1{\times}10^{16}\;ions/cm^2$. It was found from SEM results that the surface morphology of PTFE was changed into one with filament structure after Ar ion irradiation in $N_2$ gas environments. On the contrary, Ar ion irradiation in $NH_3$ gas condition induced the PTFE surface with network structure. Hydrogen ion irradiation resulted in a little change of PTFE surface morphology, comparing with the case of Ar ion irradiation. The water contact angle of hydrogen ion irradiated PTFE surface in reactive gas decreased with increment of ion dose. Hydrogen ion irradiation could improve hydrophilicity with little change of surface morphology. It might be considered from FT-IR results that the improvement in wettability of PTFE surface by ion irradiation in $N_2$ and $NH_3$ gases could be due to the hydrophilic groups of NHx bonds.