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태권도 겨루기 준비자세에 따른 앞돌려 차기 시간의 분석
丁局鉉,鄭樂喜 韓國體育大學校 1997 論文集 Vol.20 No.-
This study was under taken to identify the speed times among Free fighting stance Knee joint straighted stance, Knee joint bented stance, and Bouncing stance in TaeKwon-Do, by utilizing a high-speed camera(HSV 200 made from NAC Company in Japan), which will be able to take 200 frames per second. The 15 subjects employed for this study were selected form the Korean National TakKwon-Do players in 1995. In order to accomplish the purpose of this study, The data were analyzed with One-way ANOVA to determine the speed time of each stance. The results showed that there were statistical differences between the four stances each other. Therefore, to test the differences, Scheffe-test foe post-hoc comparisons was applied to the four dependent variables. The results of the study were as follows: 1. The Knee joint bented stance is the fastest motion(0.571 sec). 2. The Free fighting stance is the 2nd fastest motion(0.626 sec). 3. The Bouncing stance shows the 3rd rank of the fast motion(0.627 sec). 4. The last rank of the stance motion is the knee joint straighted stance(0.654 sec). According to the above-mentioned results, the implications of the study suggest that the Knee joint bented stance and the Bouncing stance will be applicable to the competition effectively, and especially, the Knee joint bented stance will be beneficial against the count-kick in the competition.
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有限要素法에 依한 notch部의 應力解析과 光彈性實驗과의 比較
鄭然輝,崔國光 嶺南大學校 工業技術硏究所 1974 연구보고 Vol.2 No.1
The design of machine elements formed with various notched shapes requires accurate predictable stress value of the notched position, therefore, many investigators have dealt with this subject, but they only reached approximate value In this paper, the stress concentration factors of the U-notched plate and V-notched plate subjected to tensile force was calculated by the photo-elasticity experiment and the finite element method, subsequently with equations by above method and many invesgatied equants were compared. The result was as follows. (1) The values of photo-elasticity experiment of the U-notched plate are greater than the values calculated by the finite element method. by 0.5% (2) The values of photo-elasticity experiment of the V-notched plate are 0.4% greater than the values calculate by the finite element method. by 0.4% (3) Trying to compare the values, we applied Armbruster's equation to the U-notched plate and to the V-notched plate and the values calculated by the finite element method. The values of the both theoritical equations are 1.7%, this is 10% greater than the values by finite element method respectively.
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가변 신호시간을 갖는 개선된 신호등 시스템 설계에 관한 연구
정용국,용승일,원충상 한국교통대학교 2015 한국교통대학교 논문집 Vol.50 No.-
Current of a simple traffic light system varies in a certain direction.Standby regardless of whether a certain order to change the signal or increase the vehicle's system is inefficient.This paper tries to design and implement the system of the vehicle according to the amount of variable signal and the presence of vehicle standby.Series of logic circuits using PLD and 74 to control the order of the length of the signal, the signal circuit design.Signal was verified using a breadboard circuit is variable, depending on the amount of atmospheric presence of the vehicle and the vehicle system was implemented.
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디지탈 위상 검출기에서의 Metastability 향상에 관한 연구
홍국태,이성대,정강민 成均館大學校 科學技術硏究所 1995 論文集 Vol.46 No.2
This paper shows our study on memory phase detectors, ie digital phase detectors using flipflops. For the purpose of improving metastability performance and delay performance, structure of circuits was designed to have better metastability and aspect ratio was controlled in order to give better delay performance.
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홍국태,이성대,정강민 成均館大學校 科學技術硏究所 1995 論文集 Vol.46 No.1
In this paper, a high speed, high accuracy sample and hold circuit that minimizes the hold step error by using a new circuit architecture is proposed. This new sample-and-hold scheme takes advantages of the speed of the open loop sample-and-hold circuit in the SAMPLE time and the cancellation of charge injection in the HOLD time. It operates above 50MHz with 0.3mV hold step error.
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洪國泰,李成大,鄭康敏 成均館大學校 科學技術硏究所 1994 論文集 Vol.45 No.2
In this paper, a programmable high-sample-rate FIR digital filter was designed for a highbandwidth communication system. A fully parallel bit-level pipelined transpose-form carrysave architecture using CSD coefficients was adopted for high-speed operation. In this system, multiplication can be translated to simple shift-addition processes. For programmability of filter coefficients, two decoders and a few registers are added, and the shifting processes of input data are controlled according to the data registered. Therefore, the speed performance of the designed filter is comparable to the case of a non- programmable filter.
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朴靑國 조선대학교 인문학연구소 1998 外國文化硏究 Vol.21 No.1
談話文의 模寫表現은 話者의 高度의 分析力에 의해 發話되는 表現이다. 本稿에서는 이러한 分析의 類型을 考察하여 보았다. 模寫表現者는 상대방의 發話를 單純히 反復表現하는 것이 아니라, 자신의 여러 判斷基準에 따라 分析 및 取捨選擇을 하여 模寫表現을 發話하게 된다. 상대방의 發話 分析은 두 段階로 나누어 볼 수 있다. 첫 번째는 상대방의 發話가운데 「言表事態」와 「言表態度」를 분리, 分析하여 「言表事態」만을 模寫表現으로 發話하게 된다. 두 번째는 상대방의 發話에 複數以上의 「言表事態」가 포함되어 있을 경우에는, 그 중에서 比較的 새로운 內容의 情報가 模寫表現化하게 된다. 그리고 상대방의 發話態度에 의해서도 模寫表現을 나누어 볼 수 있다. 그 가운데 상대방의 主權的인 感情이 들어 있는 表現의 경우에는 模寫表現者가 그 內容을 認知하여 模寫表現化 한다. 상대방의 主權的인 感情이 내재되어 있지 않은 平凡한 서술표현의 경우에는 模寫表現者의 主權的인 分析, 判斷에 의해 자신과의 關係가 예상되는 경우에 模寫表現化하게 된다.
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박충규,김응수,김정국,허웅 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-
In this paper, a Meridian balance measurement system is developed for Meridian characterization studies. The system utilized a method of Meridian electrical flow measurement. The system consists of 4-channel Meridian impedance measurement parts, filters, A/D converter, micro-controller, and personal computer. The system flows a low current between Meridian points and measures the energy amount by using the voltage drop on a standard register. The voltage drop is then A/D-converted and fed to personal computer for impedance calculation.
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C - Scan을 이용한 시편 내부의 결함 측정 및 탐상 (Ⅱ)
玄淸男,韓材國 弘益大學校 産業技術硏究所 2004 産業技術 Vol.14 No.-
In this study, the flaws in the several test specimens are detected by using a C-Scan system. The following results are obtained through this research; 1. How to detect the flaws in the specimens 2. How to determine the depth of the flaws in the specimens 3. How to determine the size of the flaws in the specimens 4. How to determine if the specimen is in one piece or not and how to detect defects at the joining part 5. Analysis by using Linear Profile and 3D View In order to determine the depth and size of the flaws in the specimens precisely, it is very important to operate the C-Scan system properly
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