10주간 감각-운동 기능적 훈련이 중․고등학교 원반선수의 순발력, 민첩성, 평형성에 미치는 영향

최종환, 박광훈 忠北大學校 平生體育硏究所 2014 平生體育硏究所 論文集 Vol.26 No.-

The purpose this study intended to examine the effect of the 10 week sensory-motor functional training For this, subjects were assigned 12 discus throwers in Men's middle school and high school in C Province into two group of 6 people : the experimental group that was trained for the program involving 10 week sensory-motor functional training and the control group that was trained as a general training program to improve their agility, power and balance. The power motor ability(Standing long jump, shot-put) and the agility motor ability(20 m zigzag step test, side step test) of each group were measured before and after the training assigned each other and the dynamic balance ability test and single-leg stance were measured for balance ability test. After analyzing the ANCOVA on the pre-test and post-test, The study results were as followings: First the discus throwers trained by the 10 week sensory-motor functional training were better than the discus throwers trained bythe existing program for improving power and ability on the record of power motor ability(shot-put). Second, the discus throwers trained by the 10 week sensory-motor functional training were better than the discus throwers trained by the existing program for improving power and ability on the record of agility motor ability(side step test). Lastly, the discus throwers trained by the 10 week sensory-motorfunctional training were better than the discus throwers trained by the existing program for improving power and ability on the record of balance ability(single leg stance). For this reason, 10 week sensory-motor functional training will improve the power, agility and balance ability which are fundamental physical fitness for discus throwers. Therefore, it may imply that the 10 week sensory-motor functional training results in good competitions for all discus throwers.

소록도 官舍施設의 建築的 特性에 관한 硏究

최인환,정준현,손광제 대구대학교 과학기술연구소 1998 科學技術硏究 Vol.5 No.4

This study is to analyze the architectural characteristics of official houses in Sorok Island. On twenty official house planes, which were constructed during 1927-1940, were surveyed and analized about house type, plane construction style and unit space scale. In the result of this study, first, official house type in Sorok Island was classified into multi-family type and one-family type, plane construction style was classified into the wooden verandah style, compact style and corridor style of the original housing form of Japanese. Second, unit plane was composed mainly of 2∼3 TADANII and an ONDOL room, stand-up kitchen style, bathroom, toilet etc. and added living room of Westem Style in the large scale plane. Third, for the seperation of rooms HUSIMA(wooden sliding doors) had been installed, and TADANII size was used 「Kyung Kahn」 scale of Japanes. In the unit space scale, multi-fanuly type is smaller size than Japanese house, and one-family type is common size.

시험관내 YAC-1 세포주의 방사선 및 항암제감수성에 관한 연구

최의환,고광준 大韓口腔顎顔面 放射線學會 1997 Imaging Science in Dentistry Vol.27 No.1

The purpose of this study was to aid in the prediction of tumor cell tolerance to radiotherapy and/or chemotherapy. For this study, cell surviving curves were obtained for mouse lymphoma YAC-1 cell line using semiautomated MTT assay. 2, 4, 6, 8, 10Gy were irradiated at a dose rate of 210cGy/min using ?Co lrradiator ALDORADO 8. After irradiation, YAC-1 cell lines(3×10⁴cell/ml) were exposed to bleomycin or cisplatin for 1 hour. The viable cells were determined for each radiation dose and/or each concentration of drug at the 4th day. And they were compared to control values. The obtained results were as follows: 1. The surviving curve with gentle slope was obtained after irradiation of 2, 4, 6, 8, 10 Gy YAC-1 cell line. 2. The cytotoxocity of bleomycin or cisplatin was increased significantly at all concentration of 0.2㎍/ml, 2㎍/ml and 20㎍/ml on YAC-1 cell line (P<0.01). And the cytotoxicity of cisplatin was greater than that of bleomycin at all concentration on YAC-1 cell line (P<0.01). 3. There were no significant differences of surviving fractions among 4Gy, 6Gy and 8Gy after irradiation of each radiation dose with 2㎍/ml of bleomycin compared with irradiation only on YAC-1 cell line. 4. There was significant difference of surviving fraction between 2Gy and 10Gy after irradiation of each radiation dose with 2㎍/ml of cisplatin compared with irradiation only on TAC-1 cell line (P<0.05). 5. There were significant differences of surviving fractions between the groups of irradiation only and the groups of irradiation with 2㎍/ml of bleomycin or cisplatin at all doses of 2, 4, 6, 8 and 10Gy on YAC-1 cell line (P<0.05).

스포츠活動參與에 影響을 미치는 社會心理的 要因 分析

崔忠煥,金廣基 중앙대학교 스포츠과학연구소 2000 體育硏究 Vol.- No.13

The purpose of this study was to analysis the socio-psychic variables which influence participation in sports and physical activities. The results are following like this; 1) The hypothesis which social variables have an affirmative effect on participation in sport activities, show to reach the level. Therefore, the social variables have influence on participation in sport activities. 2) The hypothesis which psychic variables have an affirmative effect on participation in sport activities, were showed to reach the level. Therefore, the psychic variables have influence on participation in sport activities. 3) On participation in sport activities, the favorable degree for sport were showed to increase on the younger. 4) Every individual make choice of sport item to opportune socio-psychic cause, according to increase on age. This results have proved to be the determination rationalizing to varying on participation items in sport activities.

두부회전에 따른 측모두부방사선 계측치의 변화

김광수,황미선,최의환,김광원,윤영주 대한치과교정학회 2000 대한치과교정학회지 Vol.30 No.1

본 연구는 측모두부방사선사진 촬영시 발생될 수 있는 두부회전이 측정된 선, 각계측치들에 어느 정도의 투사오차를 야기시키는지 알아보기 위해 조선대학교 의과대학 해부학교실에 소장중인 건조두개골 중 비교적 상태가 양호하고 특별한 비대칭이 없는 영구치열기의 건조두개골 17개를 표본으로 선택하여 시행하였다. 각각의 건조두개골을 수직축(Z축)을 중심으로 기준위치(0˚)에 대해 1˚ 간격으로 ±15˚ 까지 실험적으로 회전시켜 총 527장의 측모두부방사선사진을 촬영하였다. 이를 근거로 기준위치(0˚)에서의 계측치와 각 회전각에서의 계측치들 사이에 paired t-test를 시행하여 측모두부방사선사진 계측치 간의 차이를 규명하였으며, 이를 통해 투사오차의 관점에서 교정학적으로 유용한 측모두부방사선 계측항목을 구한 결과 다음과 같은 결론을 얻었다. 1.각계측항목이 선계측항목에 비해 투사오차가 작았다. 2.각계측항목은 정중시상면에 위치한 기준점들을 많이 포함할수록 투사오차가 작았다. 3.수평선계측항목의 길이는 필름방향으로 회전됨에 따라 점진적으로 감소되었으나, 초점 방향으로 회전됨에 따라서는 증가되다가 감소되었으며 상대적으로 그 변화양이 작았다. 4.두부회전에 따른 투사오차는 수직선계측항목에 비해 수평선계측항목에서 컸다. 5.수직선계측항목은 회전축으로부터 거리가 증가함에 따라 투사오차가 증가하였다. 이상을 종합해 볼 때 두부회전에 따른 측모두부방사선사진 계측치의 투사오차를 최소로 하기 위해서는 선계측항목보다는 각계측항목을 사용하는 것이 유용할 것으로 사료된다. This study was performed to find out the effect of projection errors on cephalometric linear and angular measurements according to head rotation during taking lateral cephalometric radiographs. Seventeen skulls with permanent dentition and no gross asymmetry were obtained from the Department of Anatomy, Medical School, Chosun University. Total 527 x-ray films were taken with 1˚ interval from the reference position(0˚) to ±15˚ around the vertical axis (Z axis) which is perpendicular to the midpoint of the line connecting the center of two ear rods in submento-vertex direction. Statistical analysis was performed by faired t-test if there were statistically significant differences between the mean of the reference position(0") and that of each rotation angle. The following results were obtained. 1.The projection errors of angular measurements were smaller than those of linear measurements. 2.The projection errors of angular measurements including midline landmarks were smaller than those including bilateral landmarks. 3.The horizontal linear measurements were gradually decreased when the skull was rotated toward the film, but slightly increased and then decreased when the skull was rotated toward the focal spot. However, the changes were smaller in focal direction. 4.The projection errors of horizontal linear measurements were larger than those of vertical linear measurements. 5.The projection errors of vertical linear measurements were increased with increased distance from the rotation axis to vertical measurements. It is concluded that the use of angular measeurements rather than linear measurements is recommended to minimize the projection errors.

가야산 국립공원일대의 식생 및 식물상 연구 : 단지봉 지역을 중심으로 Especially on the Danji-bong Area

박광우,권영한,최경,오승환,김동갑,김주환 한국환경생물학회 2005 환경생물 : 환경생물학회지 Vol.23 No.1

본 조사지역인 가야산국립공원은 지리학적으로는 북위 35?5′00″~35?9′30″, 동경 128?2′30″~128?09′30″에 위치하고, 행적구역상으로는 경상남도의 합천군과 거창군, 경상북도의 성주군, 고령군에 걸쳐 있으며, 총면적은 57.81 km꼬?이른다. 가야산은 우리나라 기후지역상 온대남부에 위치하고, 식물구계학적으로는 남부아구에, 식생구계학상으로는 냉온대에 속하는 것으로 알려져 있다. 또한, 전체면적의 약 82.5%가 해발 600m 이상이며, 1,000m이상이 약 10.3%에 해당된다. 가야산의 해인사-극락골-토신골 지역은 잘 보존된 소나무림이 우점하고 있고, 부분적으로 노각나무가 산생하는 것이 관찰되었으며, 해인사-진대밭골-두리봉 지역은 계곡에는 소나무와 졸참나무가 고지대에는 신갈나무 등이 부분적으로 군락을 형성하고 있었다. 또한 남산제일봉과 북사면은 각각 등산로와 임도가 형성되어 있어 소나무와 졸참나무, 신갈나무 등이 혼재된 양상을 나타내었고, 백운동계곡 주변은 다른 사면과 달리 식생의 발달정도가 소나무와 관목위주로 매우 단순했다. 특기할만한 점은 상왕봉 주변에서 흰참꽃, 설앵초, 네귀쓴풀, 백리향, 솔나리, 구름송이풀 등의 희귀 또는 고산성 식물들이 분포하는 것이 확인되었다. 가야산국립공원지역에 분포하는 양치식물 이상의 관속식물을 대상으로 조사한 결과 91과 268속 373종 1아종 75변종 12품종 4잡종으로 총 465분류군이 조사 확인되었으며, 이는 우리나라 관속식물 4,071 분류군의 11.4%에 해당되었다. 한국특산식물은 11과 15속 15분류군으로 조사지역내 분포하는 465분류군중 약 3.2%이며. 식물구계학적 특정식물은 17과 21속 25분류군으로 이는 가야산 소산식물 465분류군의 5.4%이었고, 조사지역에 분포하는 귀화식물은 5과 7속 7분류군으로 우리 나라전체 귀화식물종 177종류의 4%이다. 또한 가야산 단지봉(1,028.5m)에서 새로 발견된 산간습지 (forested wetland)와 자란초 자생 군락지에 대해 식생 및 층위별 종조성을 토대로 현존 식생 구조를 분석하였다. This study aims to investigate the flora of Mt. Gaya National Park, especially focused on the forested wetland vegetation of Danji-bong area. The flora of Mt. Gaya was investigated from April in 2003 to October in 2004. Vascular plants of this area consist of total 465 taxa, 4 hybrids, 12 forma, 75 varieties, 1 subspecies, 373 species, 268 genera, 91 families. It corresponds to 11.4% of totally 4,071 taxa appeared in Korea. Korean endemic plants were composed 11 families, 15 genera, 14 species, 1 variety and totaling 15 taxa. And also actual vegetation structures were analyzed the newly founded forested wetland and natural population Ajuga spectabilis on the Danji- bong area using the vegetation and the species composition by tree layer.

자동차용 냉각수펌프의 성능 및 캐비테이션 특성 분석

최광호,김경훈,김봉환 慶熙大學校 레이저 工學硏究所 1996 레이저공학 Vol.7 No.-

In automobile cooling system, it is not easy to get the optimal design of the water pump due to limitation of installing location and types of operation of the water pump. The quality and durable water pump have been the resent focus of considerable interest by water pump companies and automobile manufactures. In this study, experiments are performed to get performance and efficency of the water pump at different condition as temperature, rotating speeds, types of coolant. The characteristics of water pump are effected by cavitation. And then, cavitation effects of water pump are investigated for developing the future automoble cooling system.

市販 液狀飮料製品의 치아우식유발능

李光熙,崔又煥 圓光大學校 醫科學硏究所 1987 圓光醫科學 Vol.3 No.1

The authors measured the Cariogenic Potential of thirty two liquid beverages in the market in terms of pH, buffering capacity, acid-producing capacity, and carbohydrate content which was analyzed by High Performance Liquid Chromatography. Buffering capacity was measured by the quantity of 0.1N lactic acid necessary to drop the pH of 2 ml sample & 2 ml saliva mixture as much as 1.00. Acid-producing capacity was measured by the quantity of 0.1 N NaOH necessary to elevate the pH of 10 ml sample & 1 ml saliva mixture to the original pH after twelve hours of incubation at 37℃. Relative Cariogenic Potential Index was calculated by giving one to five points to each four factors, so that the lowest would be 4 and the highest would be 20. 1. pH : 82.4% were under pH 5.00 at which enamel begins to dissolve. Carbon ated soft drinks were pH 2.88, the lowest, fruit juices were pH 3.15, ginseng drinks were pH 3.57, lactic ferments beverages were pH 3.87, and soybean milk products were pH 6.58, the highest. 2. buffering capacity: 91.2% were lower than that of human saliva. Carbo nated soft drinks were 80μl, the lowest, ginseng drinks were 85μl, soybean milk products were 107 μl, fruit juices were 376μl, and lactic ferments bevera ges were 807μl, the highest. 3. acid-producing capacity : soybean milk products were 10,762 μl, the high est, lactic ferments beverages were 2,960 μl, fruit juices were 2,931 μl, ginseng drinks were 996 μl, and carbonated soft drinks were 392 μl, the lowest. 4. carbohydrate content analyzed by HLPC : ◁표 삽입▷(원문을 참조하세요) 5. Relative Cariogenic Potential Index : carbonated soft drinks and ginseng drinks were equally 13, lactic ferments beverages and fruit juices were equally 12, and soybean milk products were 10. 6. The colleges, the industry, and the consumers should cooperate to lower the cariogenic potential of liquid beverages in the market.

자극제 사용 미분쇄 플라이애쉬 모르타르의 강도증진에 관한 실험적 연구

배수환,최광윤,정재동 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)

The purpose of this study is for the active use of the fly ash, which is a by-product of the combustion pulverizes coal thermal power plants, it should be used to compensate for the lack of landfill and for conservation of energy as the supplementary cementitious material, and to prove its possibility as the related products of the cement. First of all, the ordinary fly ash is ground in a special method and its fineness is controlled from 4000cm²/g to 6000 cm²/g, then replaced it with the 20% to 80% of the cement mortar to test of the physical properties. The first experiment is about the slow development of the strength of the fly ash mortar in early ages, and improves its strength with the activator Na2SO4, using a large amount of fly ash. On the other hand, in case of adding activator with steam curing, it rather shows the decrease of strength. This is that it needs to consider the influence by high temperature.

초등학생의 과학에 대한 인지모니터링 기능의 효율성 분석

고광병,고세환,김범기,최관순 한국과학교육학회 2004 한국과학교육학회지 Vol.24 No.6

본 연구는 초등학생의 과학에 대한 인지모니터링 기능이 어느 정도인지, 또한 학년별 수준은 어떠한지를 알아보는데 그 목적이 있다. 연구 대상은 대전시에 위치하는 5개 학교에서 2~6학년까지 각 1개반을 표집하여 총 1001명을 대상으로 2~4학년용인 과학 인지모니터링 검사지Ⅰ(TSCMⅠ)와, 4~6학년용인 과학 인지모니터링 검사지Ⅱ(TSCMⅡ)를 개발하여 검사를 실시하였다. 학년별, 성별 과학 인지모니터링 기능의 효율성에 차이가 있는지를 알아보기 위해 분산 분석과 Scheffe´검증을 실시하였다. 연구 결과에 의하면 2~4학년의 인지모니터링 기능은 63.4%, 4~6학년에서는 57.4%의 효율성을 갖는 것으로 나타났다. 인지모니터링 기능의 효율성을 학년별로 구분 할 때, 3, 4학년은 2학년보다 유의미하게 높게 나타났으며, 5, 6학년이 4학년보다 더 높게 나타났다. 성별로 보면 2, 3학년은 여학생이 남학생보다 높았으며, 4~6학년은 성별 차이가 나타나지 않았다. The purpose of this study was to investigate the effectiveness of cognitive monitoring skills of elementary students on science by the grade and sex. The subject of this study was 1001 elementary students of 2~6 grade from 5 schools. The instrument of study, TSCM Ⅰ(Test of Science Cognitive Monitoring Ⅰ) for 2~4 grade and TSCM Ⅱ for 4~6 grade were developed. The results of this study showed that the effectiveness of cognitive monitoring skills was 63.4% for 2~4 grade and 57.4% for 4~6 grade. The effectiveness of cognitive monitoring skills of 3 and 4 graders was significantly higher than 2, while 5 and 6 was higher than 4 graders. Girls were higher than boys for 2 and 3 grade, but 4?6 graders were not significantly different by the sex.