• 한국멀티미디어학회논문지
• /
• 제13권8호
• /
• pp.1163-1170
• /
• 2010

본 논문에서는 인터넷을 이용한 원격지 공정관리 시스템을 개발하는데 있어서 유지보수가 용이하고, 기능의 추가가 쉽도록 자바 언어와 GoF 디자인 패턴을 이용한 설계기법을 보인다. 시스템의 구현을 위해 현재 운전되고 있는 설비들의 상태를 파악할 수 있도록 설비 제어 박스에 있는 PLC에 RS232C와 RS422/RS485 통신모듈을 추가하였고, PLC를 통하여 제어되고 있는 정보를 송수신하기 위해 RS232C 통신을 Ethernet으로 변환시켜주는 변환기를 설치하였다. 다계층으로 구성된 시스템을 구현하기 위해 Swing 컴포넌트를 사용하였으며, Applet과 Frame GUI를 동시에 지원하여, 관리자가 인터넷을 통하여 원격지의 작업공정 진도를 쉽게 파악할 수 있도록 하였다. 다계층 구조의 주요 목적은 클라이언트들 간의 자원을 공유하는 것이다. 제안된 시스템은 원격지에서 설비를 제어하기 위한 소프트웨어를 제작하는데 도움을 줄 수 있고, 이와 비슷한 소프트웨어를 제작하려는 개발자에게 기존 코드를 쉽게 재사용하여, 새로운 기능을 쉽게 추가할 수 있다는 장점이 있다.

• 한국운동역학회지
• /
• 제20권2호
• /
• pp.213-219
• /
• 2010

The purpose of this study is developing a method to analyze and evaluate a golf swing motion using the ground reaction force (GRF) data. Proper weight shifting is essential for a successful shot in golf swing and this could be evaluated by means of the forces between the feet and ground. GRF during the swing were measured from 15 low-handicapped male golfers including professionals. Four clubs(driver, iron 3, iron 5, and iron 7) were selected to analyze the differences due to different characteristics of club. Swings of each subject were taken using a high speed video camera and GRF data were taken simultaneously by two AMTI force platforms. To simplify the GRF data, forces of the three major component of GRF(vertical, lateral, anterior-posterior force) at 10 predefined temporal events for each trial were selected and the mean of each event were calculated and evaluated. Analyzed vertical GRF (VGRF) data could be divided into two different styles, one-legged and two legged. One-legged style shows good weight transfer to the target leg and most of the previous study shows this style as a typical pattern of good players. Therefore the data from the iron 5 swing obtained from 10 one-legged style golfers are provided as criteria for the evaluation of a swing.

• 한국자동차공학회논문집
• /
• 제21권5호
• /
• pp.25-33
• /
• 2013

All-wheel steering (AWS) system is applied to articulated vehicles to reduce turning radius. The swing-out suppression algorithm is applied to AWS ECU, a key component of AWS system. The swing-out suppression algorithm applied to AWS ECU has a problem when velocity of vehicle is changed. In this paper, new algorithm based on moving distance that solve velocity problem is proposed. The HILS simulation and the test articulated bus is used to validate algorithm.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2010년도 춘계학술대회 논문집
• /
• pp.282-291
• /
• 2010

In line with current speed-up of railroad, a slab track has been increasingly adopted in a bid to secure the safety of track structure as well as to reduce the maintenance cost, and furthermore, the need for commercialization of domestically-developed swing-nose crossing turnout on slab track has been on the rise. For commercialization of swing-nose crossing turnout on slab which was developed in Korea, a technical and systematic performance evaluation system, considering local environment, shall be established and then the performance evaluation shall be accordingly implemented. This paper was intended to summarize the performance evaluation system, referring to the data available at home and abroad and the results of performance evaluation for domestically-developed swing-nose crossing turnout on slab track carried out to date based on that system. A performance evaluation system comprises the technical requirement appropriateness evaluation(component performance evaluation and design verification), laboratory test and on-site test. For domestically-developed swing-nose crossing turnout on slab track, appropriateness evaluation and laboratory test have been completed and the on-site test of those installed on the 2nd phase of Kyung-Bu HSR is underway now.

• 한국운동역학회지
• /
• 제18권1호
• /
• pp.11-19
• /
• 2008

전국 규모의 경기에서 우승한 선수들을 포함한 남자대학 선수 8명을 대상으로 했다. 피험자의 4명은 펜홀더 그립, 4명은 세이크핸드 그립의 라켓을 사용하며 모두 오른손을 사용했다. 탁구의 포핸드 드라이브와 스매시의 라켓스윙동작과 관련된 각도성분, 스윙궤도, 스윙자세 등의 3차원 각운동 특성을 비교 분석한 결과 다음과 같은 결론을 얻었다. 라켓각(p<.05)과 라켓의 스윙각(p<.01)에서 두 동작 간 유의한 차이를 보였다. 스매시는 백스윙 자세에서 이미 라켓을 세워 라켓각을 크게 유지했으며, 라켓의 스윙각을 작게 해서 볼 스피드에 비중을 두는 것을 알 수 있었다. 또한 백스윙 자세에서 라켓헤드의 높이도 두 동작 간 큰 차이가 나타났다. 임팩트 순간 phg에서 두 동작 간 라켓 장축의 열림각의 차이가 크게 나타난 것을 보면, 볼에 순회전의 스핀을 넣기 위해서 약간 뒤에서 임팩트가 이루어진 것을 알 수 있었다. 백스윙 자세에서 상체의 기울기는 드라이브 동작에서 phg보다 shg에서 상체를 조금 더 구부리는 것은 중립 자세에서 라켓 그립의 구조적 차이로 인한 것으로 판단된다.

• 한국신재생에너지학회:학술대회논문집
• /
• 한국신재생에너지학회 2006년도 추계학술대회
• /
• pp.447-450
• /
• 2006

Hydrogen separation from multi-component mixture gases by the four-bed PSA process was studied experimentally and theoretically using layered bed of activated carbon and zeolited 5A. Effects of the adsorption time, the linear velocity on the process performance were investigated. The adsorption time and linear velocity affected the purity and recovery of the product $H_2$ purity is increases according as the adsorption time and linear velocity decrease; however, $H_2$ recovery shows an opposite phenomena to the purity. PSA process simulation studied to find optimum operation condition. In the results, 50sec adsorption time, 3cm/s linear velocity might be optimal values to obtain more than 99.999% purity and 65% recovery hydrogen.

• 대한물리의학회지
• /
• 제4권4호
• /
• pp.249-255
• /
• 2009

Purpose：To investigate of gait component in Parkinson's Disease patient. Methods：participated Parkinson's Disease patient(n=12) and Normal adult(n=13). gait measure used by GaitRite. Results：SPSS for win version 12 was used for statistic analysis and independent t-test used to find between two groups. In the comparison of temporal parameter of gait between groups, the swing phase was significant decreased in Parkinson's groups, in the stance phase was significant increased in Normal groups, in the single support was significant decreased in Parkinson's groups and in the double support was significant increased in Parkinson's groups(p<.05). In the asymmetrical ratio of singele support was significant increased in Parkinson's groups(p<.05), and the swing phase and stance phase was significant increased in Parkinson's groups(p<.05). Conclusion：In the Parkinson's Disease patient gait showed temporal and spatial component variable changes comparison normal adult. therefore, it was seems to very important considerable at gait tranning in clinical intervention.

• Journal of Mechanical Science and Technology
• /
• 제19권8호
• /
• pp.1576-1581
• /
• 2005

Generally, the optical components are fabricated by grinding, lapping, and polishing. And, those processes take long time to obtain such a high surface quality. Therefore, in the case of large optical component, the on-machine inspection (OMI) is essential. Because, the work piece is fragile and difficult to set up for fabricating and measuring. This paper is concerned about a swing-arm method for measuring surface profile of large optical concave mirror. The measuring accuracy and uncertainty for suggested method are studied. The experimental results show that this method is useful specially in lapping process with the accuracy of $3\~5\;{\mu}m$. Those inspection data are provided for correcting the residual figuring error in lapping or polishing processes.

• 한국운동역학회지
• /
• 제17권2호
• /
• pp.31-40
• /
• 2007

Proper weight shifting is essential for a successful shot in golf swing and this could be described by means of the ground forces between the feet and ground. It is assumed that the ground forces would different according to the club used because the length and swing weight of each club is different. But, in present, it is not clear what changes are made by the change of clubs and this affect the swing motion. Therefore this study focused on the investigation of the changes of the ground forces and ground reaction forces (GRF) by the change of club length. The subjects were three professional male golfers. Four swings (driver, iron 3, iron 5, and iron 7) for each subject were taken by two high speed video cameras and two AMTI force platforms were used to measure the GRF simultaneously. Kwon GRF 2.0 and Mathcad 13 software were used to post processing the data. Changes of the three major component of GRF (Vertical, lateral, anterior-posterior force) at 10 predefined events were analyzed including the maximum. Major findings of this study were as follows. 1. Vertical forces; - There were no significant changes until the top of backswing. - Maximum was occurred at the club horizontal position in the downswing for both feet. The shorter club produced more maximum forces than longer ones in the left foot, but reverse were true for the right foot. - Maximum forces at impact shows the same patterns. 2. Lateral forces; Maximum was occurred at the club horizontal position for both feet, but there were no lateral forces because the direction of two forces was different. Maximum force pattern by different clubs was same as the vertical component. 3. Anterior-posterior forces; - This component made a counter-clock wise moment about a vertical axis located between two foot until the club vertical position was reached during the backswing, and reverse moment were produced when the club reached horizontal at the downswing. - Also this component made a forward moment about a horizontal axis located in the CG during the fore half of the downswing, and a reverse moment until the club reached vertical at the follow through phase. Maximum was occurred at the club vertical in the downswing for both feet. The longer club produced more maximum forces than shorter ones for both feet.

• 한국정보통신학회논문지
• /
• 제14권2호
• /
• pp.485-492
• /
• 2010

본 연구는 모바일 기기 상에서 애플리케이션 작성 시 GUI를 지원하는 윈도우 기반의 컴포넌트 패키지 소프트웨어 모듈인 WFC에서, 보다 다양한 콘텐츠의 표현과 조작을 지원하기 위한 포커싱 가능한 테이블 컴포넌트를 제안한다. 모바일 기기의 특성상 작은 디스플레이에서 테이블 특성을 가지는 콘텐츠의 표현은 쉽지 않다. 자바와 같은 관련 연구들에서 몇 가지 방법들이 제안되었으나, 이들은 모바일 기기의 특성을 고려하여 제안된 것들은 아니다. 본 연구에서는 모바일 기기의 디스플레이상에서 테이블 특성을 가지는 콘텐츠의 알맞은 출력을 지원하고, 사용자가 지정하는 콘텐츠에 포커싱 조작이 가능하게 함으로써, 일반적인 테이블에 비해 보다 폭넓은 표현을 제공하는 확장된 테이블 컴포넌트를 설계하고 구현한다. 또한, GUI 관점에서 성능 평가를 위해 제안된 컴포넌트와 자바 Swing의 JTable과의 비교를 제시한다.