High Hurdle의 기능학적 분석

申性休 成均館大學校 1983 論文集 Vol.33 No.-

I made the three male Hurdlers of Korea(our country) in the 110m Hurdle Race as subjects of my research. I could come to the conclusion as follows, from the anlysis of the developed films by taking photographs of First Hurdling with 16mm and 8mm Movie Camera (64 Frame/sec, 70 Frame/sec). 1. The center of gravity moves to the left while they are hurdling, but it turns back to the original point after the go over the hurdle. 2. When hip joint is high, the horizontal distance between hip joint and hurdle is from 21.1 to 26㎝, and that distance is shorter than 30㎝ which was reported by Mr. Kim Won Yong. 3. Although the hurdling time was recorded as from 0.6248sec to 0.6532 sec, that was the later time 0.495-0.593sec which was reported by Terry and Daniel. 4. The horizon shifting distance of the center of gravity in hurdling was 4.15-4.724M, and it was appeared the distance was longer than 4.17M-4.52M reported by Terry and Daniel. 5. The horizon velocity of center of gravity was between 6.3533m/sec and 7.3928m/sec. If the above velocity is conpared with the velocity. 8.3735-7.2491m/sec shown by Terry and Daniel, it was shown that there were great difference between the velocity appeared in my research and that of Terry and Daniel.

유묘기 장기간 습해처리에 따른 옥수수의 생육 및 수량 특성 변화

신성휴,정건호,김성국,손범영,김상곤,이진석,김정태,배환희,권영업,심강보,이재은,백성범,전원태,Shin, Seonghyu,Jung, Gun-Ho,Kim, Seong-Guk,Son, Beom-Young,Kim, Sang Gon,Lee, Jin Seok,Kim, Jung Tae,Bae, Hwan-hee,Kwon, Youngup,Shim, Kang-Bo,Lee, 한국초지조사료학회 2017 한국초지조사료학회지 Vol.37 No.4

본 연구는 사료용 옥수수의 내습성 검정을 위한 기초자료를 얻고자 자식 6계통을 3엽기에 30일간 습해 처리 후 옥수수의 생육 특성 및 수량 변화를 구명하고자 농촌진흥청 국립식량과학원 중부작물부 시험포장(온실)에서 수행한 결과를 요약하면 다음과 같다. 1. 습해 처리 시 모든 자식 계통이 무처리에 비하여 초장, 완전전개엽수 및 엽색도(SPAD)는 모든 계통에서 유의적으로 감소하였으며 엽색도는 KS140 계통이 높았고 KS141 계통이 낮았다. 2. 지상부와 뿌리의 건물중은 습해처리 후 모든 계통이 유의적으로 감소하였으며 자식 계통들 간에는 KS140이 가장 많았고 KS163이 가장 적었다. 부정근의 건물중은 무처리와 유의적 차이는 없었으나 KS140 계통에서 높은 경향을 보였다. 3. 수확기 옥수수의 이삭길이와 두께 및 착립이삭길이, 개체당 종실수 모두 무처리에 비하여 유의적으로 감소하였다. 무처리에 비하여 이삭 길이와 두께는 KS141 계통이 착립 이삭길와 개체당 종실수에서는 KS164 계통이 가장 적게 감소하였다. 4. 옥수수 수량은 무처리에 비하여 습해 처리한 모든 계통에서 유의적으로 감소하였으나 습해 처리 계통들 간에는 KS164 계통만 유의적으로 수량이 높아 내습성인 것으로 판단하였다. 5. 옥수수 유묘기 30일간 습해처리시 초장, 엽색도(SPAD값), 완전전개엽수가 옥수수 수량과 상관이 높았다. Waterlogging strongly affects maize (Zea mays L.) growth. It is necessary to find the screening method of waterlogging tolerant maize lines. This study was to investigate the growth characters at V3 stage of maize, when is very sensitive to waterlogging. Six Korean maize inbred lines were subjected to waterlogging at V3 stage for 30 days. The 30 days waterlogging treatment significantly reduced plant height, number of expanded leaves, and SPAD value, compared with the control plants. SPAD values were significantly different among the six inbred lines, KS140 was the highest. The dry matter accumulation of aerial and root part were significantly decreased by 30 days waterlogging. KS140 was the weightiest among inbred lines. The dry matter of adventitious root showed same trend. Waterlogging treatment significantly reduced to ear length and thickness, grains filling length, grain number per ear, and maize grain. Plant height, SPAD value, and number of fully-expanded leave showed high correlation with maize grain yield, but number of senescent leaves, dry matter of adventitious root and TR ratio did not, suggesting that the former three traits may be good indicator for evaluating 30-day waterlogging tolerance of maize inbred lines. KS164 was the highest yield by increasing of grains filling length and grain number per ear of among waterlogging inbred lines. According to the results, evaluation of maize waterlogging should be consider both early growth characteristics and resilience in the later growth stages.

골프 스윙동작의 운동학적 분석

신성휴,고석곤 한국운동역학회 2003 한국운동역학회지 Vol.13 No.2

Shin, S-H and Ko, S-K. A Kinematic analysis of Golf Swing Motion. Korean Journal of Biomechanics, vol. 13, No. 2, pp. 101-114. The purpose of this study was to examine the major kinematicak variance to increase the club head velocity during the driver swing two PGA prp-golfers utilizing 3-dimensional image analyzing linear velocity of the club-head during the impact quantiatively. To achive these purpose, two high speed camera in 120 field/s and one high-speed camera in 500 field/s were used in this study. The program made by Younghoo Kwon(1944) was used to analysis the digitalization of reference point, digitalization of joint venter, synchronization, calculation of 3-Dimensional coordinate by DLT method, and smoothing. Through this study, the conclusions are as follow. 1. During the driver swing, in the percentile of the total time, two pro-golfer showed 0.925,0.929 second from adress to top-swing, 0.236,0.929 second from top-swing to impact. 2. During the driver swing in the displacement of the center of the body, two pro-golfer showed 45.3,45.23% from adress, 44.3,44.24% from impact. 3. In the velocity variance. The maximum blub-head velocity two pro-golfer showed 43.36,43.24m/s respectively the down swing. The ball velocity showed 63.12,63.06m/s. 4. In the rotational angle of the shoulder joint, two pro-golfer showed -13.5,13.53°during the back swing respectively. Two subject adressed opening status og upper body. 5. In the rotational angle of the right knee angle showed 156.3,154.7°from the adress.

Electromyography 기법을 이용한 씨름 덧걸이 기술의 상체 근 동원 비교분석

신성휴,임영태,김태완,박기자,권문석 한국운동역학회 2003 한국운동역학회지 Vol.13 No.1

Shin, S-H · Lim, Y-T · Kim, T-H · Park, K-J and Kwon, M-S. Electromyographical Analysis of Muscle Activities of Upper Trunk for Ssireum Dutguri Technique. Korean Journal of Sport Biomechanics, Vol. 13, no. 1, pp. 95-108. The purposes of this study were to analyze the muscle activities and the characteristics of muscle recruiting patterns of upper trunk for Ssirum dutguri technique using three top-ranked elite Ssirum players. The EMG technique was used to record muscle activities of both right and left sides of latissimus dorsi, biceps brachii, and erector spinae. Six surface electrodes were placed on the surface of the selected muscles and one ground electrode was also attached on the back of neck(C7). One video camera was also used to record the Ssirum motion to define 4 events and 3 phases for further analysis. The raw EMG data were filtered with band pass filter (50-400 Hz) to remove artifacts and then low pass filtered (4 Hz) to find the linear envelope which resemble muscle tension curve. This filtered EMG data were normalized to MVIC for the purpose of comparion between the subjects. The results were indicated that each subject with different physical characteristics showed very different muscle activity patterns. Although Ssirum dutguri is considered as foot technique the player grasped opponent's satba(belt) with both hands when they play. Because of this reason, activities of upper trunk muscles were relatively high. However, direct comparison between upper and lower body muscles was not possible due to the lack of the data in present study. Interestingly, all threes subjects showed that erector spinae muscle activity was comparatively higher than those of latissimus dorsi and biceps brachii. This implies to reinforce back muscle as a routine of training to improve performance or to prevent back injury. implies to reinforce back muscle as a routine of training to improve performance or to prevent back injury.

가을 출하용 단옥수수 극만파재배시 파종기가 단옥수수의 생육과 수량에 미치는 영향

신성휴,정건호,김미정,이진석,손범영,김정태,배환희,김상곤,권영업,백성범 한국작물학회 2014 한국작물학회지 Vol.59 No.3

Fresh edible sweet corns demand relativelyshort period to harvest fresh ears, which can allow farmersto make a choice sweet corns for various cropping systems. For this reason, we were to find the optimum planting dateof late-planted sweet corns to sell fresh ears in the autumnlinked to cropping system with winter crops, investigatingyield and properties of marketable fresh ears and growthtraits of sweet corns (cv. 'Godangok' and cv. 'Guseulok')depending on planting dates such as 10 July, 20 July, and30 July in Suwon 2012 and 2013, respectively. The 20July-planted sweet corns showed the most fresh ear yield. However, the 10 July-planted and the 30 July-planted had32% less yield caused by consecutive rainfall from 10 Julythrough 20 July, and 15% less yield due to low air temperatureduring ripening than the 20 July-planted, respectively. The 10 and 20 July-planted sweet corns had average 140gof a fresh ear weight and 15% heavier ear than the 30July-planted. For the July-planted sweet corns, silking daysafter planting (r=-0.80**), and harvesting days after silking(r=-0.97**) and planting (r=-0.91**) were highly negativelycorrelated with daily mean air temperature during the period,resulting in it takes 1,100 growing degree days (GDD) toharvest fresh ears from the July-planted sweet corns. Thefresh ears of the 20 July-planted sweet corns are able tobe harvested by early October. Therefore it will be a goodchoice for the cropping system based on winter vegetablecash crops such as temperate garlic and onion with mediumor late maturity. Among three planting dates 20 July-plantedsweet corns had the best field performance in every yearconsidering fresh ear yield, ear size, and stability to grow

마루運動中 Standing Tucked Backward Somersault의 動作 分析

申性休 成均館大學校 1982 論文集 Vol.32 No.-

To analyse the movement of Standing Tucked Backward Somersault among the Floor Exercise in Gymnastics, I came to modle the four best gymnast of male for research, recorded the movement in the film, enlarged, and cristlized the detalis, apperaed in the film and came to the conclusion as following; 1. Take-Off Angle was appeared at the mark of 2°6″∼7°, and should make power of vertical large, having Take-Off Angle close to the vertical distance. 2. As the nore the Flight Angle was related with the distance, the greater the Flight Angle is, and the longer the removal distance of body was appeared. 3. Somersault became faster as Trunk Angle and Leg Angle were tucked more. 4. Height was revealed as 143㎝∼163㎝. The vertical distance became greater when vertical velocity was increased with by means of the dynamic take-off. 5. Though Landing Angle showed from 84°to 86°, and if the comfortable landing pose is completed in landing, the control of the Landing Angle and the training of the landing technique was necessary in the above research.

남부산간지에서 봄과 여름 조사료 귀리의 파종과 수확 시기에 따른 조사료 품질과 생산성 변화

신성휴,이현정,구자환,박명렬,라경윤,김병주,Shin, Seonghyu,Lee, Hyunjung,Ku, Jahwan,Park, Myungryeong,Rha, Kyungyoon,Kim, Byeongju 한국작물학회 2021 한국작물학회지 Vol.66 No.2

본 연구는 조사료 연중생산이 불리한 남부산간지역(전북 장수군)에서 봄과 여름에 재배하는 조사료 귀리의 적정 파종과 수확시기를 구명하고자 하였다. 시험품종은 여름 재배용 국산 조사료 귀리 품종 '하이스피드'와 '다크호스'이었다. 남부산간지에서 봄과 여름 조사료 귀리의 적정 파종기와 수확시기를 구명하기 위하여 파종과 수확시기를 달리하여 각각 재배하고 조사료 수량과 품질 변화 양상을 분석하였다. 시험장소는 전북 장수군 소재 농가 논 포장이었다. 2015년과 2016년에 2년간 수행한 연구결과를 요약하면 다음과 같다. 1. 조사료 귀리를 2월 하순, 3월 상순과 중순에 파종하였을 때, 출수까지 적산온도가 각각 690℃, 724℃, 743℃이었고, 8월 상순, 중순, 하순에 파종하였을 때, 출수까지 적산온도는 각각 1,449℃, 1,091℃, 888℃이었다. 2. 조사료 귀리 품종(하이스피드, 다크호스)을 2월 하순부터 9일 간격으로 3월 중순까지 파종하면 출수기는 모두 5월 10일~5월 16일이었고 평균 3일 정도만 늦었고, 8월 상순부터 10일 간격으로 8월 하순까지 파종하면 출수기는 모두 10월 13일~10월 15일이었고 평균 1~2일 정도만 늦어지는 것으로 나타났다. 특히 9월 상순에 파종한 조사료 귀리는 출수하지 않았다. 3. 봄과 여름 조사료 귀리의 건물수량과 품질은 모두 파종 시기에 유의미한 영향을 받지 않았다. 4. 봄 조사료 귀리의 조단백 함량은 5월 하순에 수확한 것이 12.0%로 가장 높았고 그 이후 수확시기가 10일씩 늦을수록 급격히 감소하여 6월 상순에는 8.2%, 6월 중순에는 단백질 함량이 6.5%까지 감소하였고, TDN 함량(59~62%)도 비슷한 경향이었지만 감소폭은 작았다. 5. 여름 조사료 귀리는 파종시기가 늦을수록 단백질과 TDN 함량이 증가하는 경향이었고, 10월 하순부터 11월 중순까지 10일 간격으로 수확한 조사료 귀리의 조단백 함량이 8.4~8.7%, TDN 함량이 59.0~60.1% 정도이었다. 6. 봄 조사료 귀리는 6월 상순과 6월 중순에 수확한 건물수량이 각각 18.7톤/ha와 19.5톤/ha으로 5월 하순에 수확한 것보다 각각 83%와 91% 정도 높았다. 7. 여름 조사료 귀리는 11월 상순과 중순에 수확한 건물수량이 각각 12.5톤/ha와 12.1톤/ha으로 10월 하순에 수확한 것보다 각각 75%와 71% 정도 높았다. 8. 봄과 여름 귀리의 조사료 수량은 출수 이후 수확까지 적산온도와 높은 정의 상관관계를 나타내었다. 9. 봄과 여름 조사료 귀리의 건물수량과 품질을 고려하였을 때, 남부산간지에서 조사료 귀리를 봄에 재배할 경우에 3월 15일까지 파종하고 6월 10일경에 수확하고, 여름에 재배할 경우에는 8월 25일경까지 파종하고 11월 상순 이후 수확하면 단백질 함량이 8% 이상인 고품질 조사료의 최대 수량을 얻을 수 있는 것으로 판단되었다. Oats (Avena sativa L.) represent a good forage crop for cultivation in regions with short growing periods and/or cool weather, such as the mountainous areas of southern Korea. In this study, using the Korean elite summer oat varieties 'High speed' and 'Dark horse', we aimed to determine the optimal time to plant and harvest forage oats seeded in spring and summer in a mountainous area. Seeds were planted three times from late February and early August at 9- or 10-days intervals, respectively, and plants were harvested three times from late May to October at 10-day intervals. The experiment was carried out in an upland field (Jangsu-gun Jeonbuk) in 2015 and 2016. We investigated the changes in forage yield (FY) and quality [crude protein (CP) and total digestible nutrient (TDN) contents] based on the time of planting and harvest. Neither the forage quality nor yield of either spring and summer oats was significantly influenced by the time of planting. The CP of spring oats harvested three times at 10-day intervals from late May was 12.0%, 8.2%, and 6.5%, thereby indicating a reduction with a delay in the time of harvest. In summer oats, CP ranged from 8.4% to 8.7%, although unlike CP in spring oats, was not significantly influenced by the time of harvest. For both forage types, harvest time had no significant effect on TDN. The FY of spring oats harvested in late May and early and mid-June was 10.2, 18.7, and 19.5 ton ha^-1, respectively, with that of oats harvested on the latter two dates being significantly increased by 83% and 91%, respectively, compared with that in late May. Similarly, the FY of spring oats harvested in late October and early and mid-November was 7.1, 12.5, and 12.1 ton ha^-1, respectively, with that of oats harvested on the latter two dates being significantly increased by 75% and 71%, respectively, compared with that in late October. Taking into consideration forage yield and quality (not less than 8% CP), it would be profitable to plant spring oats in the mountainous areas of southern Korea until March 15 and harvest around June 10, whereas summer oats could be beneficially planted until August 25 and harvested from early November.

Effect of Plant Density on Growth and Yield of Extremely Late-Planted Korean Sweet Corn Hybrids (Zea mays L.) for Fresh Market

신성휴,Jin-Seok Lee,Beom-Young Son,Jung-Tae Kim,Sang Gon Kim,Mi-Jung Kim,Sun-Lim Kim,Young-Up Kwon,Seong-Bum Baek,우미옥,Hwan Hee Bae 한국작물학회 2014 Journal of crop science and biotechnology Vol.17 No.4

Sweet corn has a short growing period of 80 to 90 days in Korea, which allows famers to grow this crop using various croppingsystems. This objective of this study was to find the optimum plant density for Korean sweet corn (se) hybrids ‘Godangok’ and‘Guseulok’ when they were grown as the second crop. Plant densities were 5,710, 6,670, and 8,000 plants 10a-1 and planting dateswere 20 July and 30 July, 2013. There was no interactive effect between plant density and hybrid for all the analyzed parameters inthis study. Increasing plant density up to 8,000 plants 10a-1 led to no significant gain in marketable ear yield. Although the total numberof ears was increased about 21 ~ 33% at the highest plant density than at lower densities, e.g., 6,670 or 5,710 plants 10a-1, the percentageof marketable ear number and individual ear weight decreased with increasing plant density. Individual ear weight of marketableears was significantly greater, e.g., by 8 ~ 13%, at 5,710 plants 10a-1 and 6,670 plants 10a-1 than at 8,000 plants 10a-1. Similarresults were obtained for ear length and width and filled length under the given plant densities, which indicated that increasing plantdensity may decrease individual ear fresh weight and ear size with good tip fill. Increasing plant density up to 8,000 plants 10a-1caused the lowest harvest index, which resulted in little gain in fresh ear yield compared to the lower plant densities of 5,710 and6,670 plants 10a-1. These results indicated that the optimum plant density for those sweet corn hybrids planted in July would bebetween 5,700 and 6,700 plants 10a-1 in terms of marketable ear yield and quality of marketable ears

한국인 인체 중심 산출 방안 연구

신성휴 한국운동역학회 1996 한국운동역학회지 Vol.6 No.1

본 연구는 생체역학 연구 가운데 많이 사용되고, 스포츠 기술과 밀접하게 관련된 인체중심을 정확하게 산출하기 위하여 수행되었다. 즉 한국인의 인체 중심을 실측하고, 실측치와 차이를 보인 선행 연구 결과들 가운데 국내에서 많이 사용되는 외국의 결과를 보정하여 정확한 인체 중심을 구할 수 있도록 인체 분절의 질량비를 제시함으로써 생체역학 연구와 운동 기술 평가에 도움을 주고자 하는데 그 목적을 두었다. 인체 중심을 구할 때 현재 국내에서 가장 많이 사용되는 Dempster(1955), 또는 松井(1956)이 구한 인체 분절별 전신에 대한 비율을 한국인의 인체 중심에 알맞게 보정하고 타당성을 분석한 다음 제시하였다. Dempster가 제시한 방법은 한국인 남자의 인체 중심과 2.29% 차이를 보였으며, 松井이 제시한 방법은 1.54% 차이를 보였다. 이러한 차이를 인체 중심에 국한하여 정확한 값을 얻을 수 있도록 그들이 제시한 분절의 질량비를 개선하여 제시하였다.

500m 숏트랙 스피드 스케이팅 출발동작의 운동학적 분석

신성휴,백진호 한국운동역학회 1996 한국운동역학회지 Vol.6 No.1

본 연구의 목적은 숏트랙 스피드 스케이팅 500m 종목의 출발 구간에 대한 운동학적 특성을 알아 보는데 있다. DLT기법을 이용한 3차원 영상분석 결과 다음과 같은 결론을 얻었다. 출발 구간의 기록이 좋을수록 첫발이지 시간이 빠른경향을 보였으며, 평균 빙면 접촉시간이 짧았다. 신체중심의 수평이동변위는 출발후 0.4초를 전후하여 급격히 증가하였으며, 기록 이 좋을수록 이러한 시간이 빠르게 나타났다. 또한 기록이 좋을수록 출발자세가 낮고, 신체중심의 수직이동변위가 최고높이에 도달하는 시간이 짧았으며, 스케이트날의 속도는 추진동작에서 가속되어 제자리동작시에 점점 감속되다가, 빙면접촉시(글라이딩)에 최저의 속도를 나타냈다. 또한 스텝거리보다는 스텝률을 이용하려는 경향을 보였다. 이상의 결과를 요약하여 보면, 빠른 첫발이지시간과 가속시간, 짧은 빙면 접촉시간, 낮은 출발자세, 빠른 스텝률, 큰 추진각등이 출발구간의 기록을 단축시킬 수 있는 운동학적 요인들로 규명되었다. 본 연구에서는 출발자세를 일정하게 통제하지 않았는데, 앞으로 출발자세에 따른 운동학적 특성 및 본 연구결과 외에 출발구간에 영향을 미칠 수 있는 요인들과 개개인의 신체적인 요건, 그리고 기술의 숙련도에 따른 동작의 제시에 관한 연구가 요구된다. The purpose of this study is to explain the kinematical characteristics of starting techniques in 500m short track speed skating. 3Dimensional video techniques were used to capture the movement of starting phase of 4 female short track speed skater who place in the world class. Based on the results of this study, the following conclusion were drawn. 1. The better the record of starting phase is the faster take off time of first foot. 2. The better the record of starting phase is the shorter average of contact time on ice surface. 3. For 0.4 second after starting, the horizontal displacement of C.O.G. has increased rapidly. 4. The better the record of starting phase is the lower ready position. 5. The velocity of skate blade accelerates n the propulsive motion, decelerates in the recovery motion and finally showes the lowest velocity during contact of ice surface. 6. The better the record of starting phase is the higher step rate.