臨界負荷 인터벌-웨이트 쟈케트 트레이닝이 心肺機能에 미치는 效果

蔡鴻遠,申榮吉,林銖遠 慶北大學校 體育科學硏究所 1992 체육과학연구지 Vol.8 No.-

The purpose of this study is to research and analize a limited factor of endurance-running(that is mechanism of cardio-vascular function) in order to grasp a new training method of interval weight jacket training and aerobic power ability after exercise. 12 subjects were selected out of the volleyball players in KPU. characteristics of subjects were 8.42±1.08 years in exercise, 47.75±2.70㎖/㎏ min in VO_2 max. The experiment was verified longitudinally pre-test and post-test, treadmill exercise test was carried under maximal load in pre and post-test. Test instruments were cardio pulmonary exercise system. Q-plex I and gas analizer and EKG, and test items was focused on a limited factor of endurance-running, that is, VO_2 max, HR max, VE BTPs max, METs, TWt and so on. Later 8 weeks training, the result of which are as follow. VO_2 max showed significant(P<.01) increase from 61.8±6.96㎖/㎏ min to 66.13±7.96㎖/㎏ min, it's difference was 4.27㎖/㎏(6.9%). HR max showed nonsignificant(P>.05) increase from 187.5±8.98bts/min to 190.42±8.70bts/min, it's difference was 2.92bts/min(1.6%). VE BTPS max showed significant(P</05) increase from 159.01±28.75ℓ/min to 169.41±22.24ℓ/min, it's difference was 10.4ℓ/min(6.5%). METs and Twt max showed very significant(P<.05, P<.01 respectively) increase from 17.96min to 18.89min and from 14.7min to 16.3min. it's difference were 0.9, 1.6min respectively. Result of exercise test showed decrease value in 3 minute interval of the same load intensity during dynamic rest of maximal exercise load. It is considered that long-term acclimatization of I-WJT bring about increased energy utilization efficiency after experiment.

Depth Jump-Shocking「SQT」프로그램이 러닝블로킹에 미치는 效果

蔡鴻遠,李敏炯,申榮吉,林銖遠 慶北大學校 體育科學硏究所 1989 체육과학연구지 Vol.5 No.-

The main purpose of this study is to analyze the effect of depth jump shocking "super quality training ; SQT" programme for improving leg power performance of volleyball players. 9 male players were selected out of the volleyball players in KPU. The experiment was focused on jumping height, speed and repetitive jumping speed in the take-off in box drill dropping performance, various articles have reported that, during the take-off jump, exterior muscles at the beginning fulfill both work(the phase of amortization) and later overcoming work(phase of active take-off). Therefore, in the experiment the subjects were required to keep their both legs upward after the plumb-line jump from the box 50∼70㎝ height. The landing area was conditioned with jumping board(amortization phase) During the 8 weeks of experiment, the trading was regularly enforced once per day, 4 or 5 times frequence a week, the data statistically obtained were analyzed, the results of which are as follows : ① Blocking jumping height The performance of exp. subjects was greatly improved after experiment. The increase of blocking jumping height in the exp. subjects was 3.9㎝∼6.4㎝(6.5%∼12.8%). The values of all items were statistically significant at 0.001 level. ② Blocking jumping speed The performance of exp. subjects was greatly improved after experiment. The increase of blocking jumping speed in the exp. subjects was 20㎳∼170㎳(4.0%∼10.9%) The values of all items were statistically significant at 0.001 level. ③ Blocking repetitive jumping speed The performance of exp. subjects was greatly improved after experiment. The increase of blocking jumping speed in the exp. subjects was 360㎳∼1040㎳(6.1%∼10.8%). The values of items were statistically at 0.01 level.

科學的 思考의 發達過程에 關한 硏究

崔榮普 동국대학교 행정대학원 1975 행정논집 Vol.6 No.-

Odd-Even sorting network을 사용한 non-blocking ATM switch

채일호,김운식,황영원,김상하 충남대학교 기초과학연구소 1994 忠南科學硏究誌 Vol.21 No.1

광대역 통신망의 발달로 ATM switch의 중요성은 점차 증가되고 있으며 이에 대한 많은 연구가 진행되고 있다. ATM switch는 크게 blocking, non-blocking으로 분류된다. 이 중 우리가 관심을 갖는 non-blocking switch는 내부에 buffer를 두거나 Sort-Banyan network을 사용해서 구현된다. 본 논문에서는 Odd-Even Sort를 Sort-Banyan network의 전위 network으로 갖는 ATM switch를 제안한다. 이러한 switch는 기존의 Sort-Banyan switch에 비해서 비교기의 숫자를 감소시킬 수 있어 VLSI구현시 큰 장점을 갖는다.

韓國學生의 姿勢形成 調査硏究

蔡鴻遠,李敏炯,申榮吉,金基學,李秀川,金正子 慶北大學校 體育科學硏究所 1990 체육과학연구지 Vol.6 No.-

In order to study the postures of Korean students, 4,448 students who lives in urban and rural community were participated as subjects and examined by using New York State Posture Rating Test Method with taking photographs. The results were subdivied into postures of body parts, total posture score, leg types, and lateral deviation and analysed as follows. 1. Postures of body parts 1) Head Tilt For elementary and middle school students, the cases of tilted head were shown more frequently in urban than rural and the ratio of the case of the tilted head was increased as grade was higher. On the other hand, high school studends had the opposite tendency. 2) Uneven Shoulder Height For elementary school childs, higher grades had better condition than lower grades, however, for high school students, those in urban had more cases of uneven shoulder than those in rural and girls showed more deviations than boys. 3) Scoliosis Rural childs had more cases of scoliosis than urban childs, but there were no differences of middle and high school students. 4) Uneven Hip Height Urban and rural childs showed some cases of uneven hip which belonged to normal ranges. Middle and high school studedns werw nearly perfect in the hip height, therefore the condition seems to change as they grow older. 5) Pronated Ankles For this part, those in rural showed better conditions than those in ruban in all age groups and, especially high school third grade students were more satisfactory in rural than urban(84% vs 50%) 6) Forward Head Elementary and middle school students appeared to be satisfactory regardless of age, sex and district, however 32% of high school girl students had forward head. 7) Round Shoulders Many students had round shoulders and some of them revealed severe conditions, There were large differences between urban and rural students. 8) Trunk Hyperextension Generally, girls showed better conditions than boys in trunk posture and, for high school boy students, conditions were differed according to their grades. 9) Sagging Abdomen More cases of sagging abdomen were revealed in ruban that rural for elementary girl students(30% vs 14%). For middle and high school students, there were differences between sex, boys showing more cases than girls in middle school and girls in high school. 10) Lordosis There were differences between urban and rural for elementary childs and high school boy students, however no differences were detected in other groups. Mean degrees of lordosis had a tendency of increasing as the age grew. 2. Total Posture Score For elementary childs, both boys and girls showed differences between urban and rural(75.95 vs 70.73, 75.16 vs 82.42), and, in rural girls seems to be more satisfactory than boys in comparison between boys and girls(p<. 001). In middle school group, rural students appeared to be significantly(p<.05) better than urban students for both sex(83.88 vs 81.93, 75.93 vs 75.02) and the result was same for the high school group(86.52 vs 84.03, 80.07 vs 78.10) 3. Leg types For elementary childs, girls revealed more cases of bowlegs and knock-knee than boys(6% vs 8.2%, 20.5% vs 30.3%). In high school group, the girls in rural showed more cases of bowlegs than those in urban(29.7% vs 13.0%) and, the knokc-knee, the result was opposite(19.3% vs 28.4%). 4. Lateral deviation 1) Head Tilt In elementary group, 11% of boys and 6.3% of girls had lateral deviation and, for high school students, 3.6% of boys and 5.4% of girls showed the deviations revealing girls had more cases of deviation than boys. 2) Uneven Shoulder Height 1.8% of elementary boys and 0.5% of girls had uneven shoulder and totally 1.5% of high school students showed uneven shoulder height. 3) Scoliosis 15.5% and 17.4% of elementary boys and 21.6% and 20.7% of girls deviated to right and left respectively. Urban students showed general trends to leftward deviation while rural students showed rightward deviation. 4) Uneven Hip Height In this part of posture, they showed good conditions in all age, sex, and district.

都農地域 靑少年의 姿勢形成 比較分析

蔡鴻遠,李敏炯,申榮吉,金正子 慶北大學校 體育科學硏究所 1988 체육과학연구지 Vol.4 No.-

The objective of this research is to analyze the actual state of juvenile posture formation and defects resulting from the environmental differences between urban and rural areas, and further to suggest the concrete data for the practical posture guidance. Boy and girl students from K junior and D girls' junior high schools of Taegu City and H junior high school of Kyungpook Province are selected as purposive samples. Thus 291 boys and 321 girls from urban and 260 boys and 270 girls from rural areas are sampled to be a total of 1142 boys and girls. As the methods of test, New York State posture Test(NYSPT), bowleg(0-type leg) and knock-knee(x-type leg) tests are used with the aid of photograph. Their results are as follows. 1. The final scores and percentages of NYSPT evaluation of boy students in urban and rural areas are 57.2(58%) and 58.0(60%), respectively, and their achievement scores are 6.3 and 6.8 within normal state. The comparison between urban and scores shows that rural students are in more correct posture with 1% level of significance than urban students. This is statistically meaningful(p<0.01). 2. The final scores and percentages of HYSPT evaluation of girl students i% urban and areas are 59.0(69%) and 60.0(69.3%), respectively, and their achievement scores are 7.0 and 7.2 within normal state. The comparison between urban and rural scores shows statistically meaningless with 5% level of significance(p<0.05). 3. The NYSPT evaluation scores of posture formation between boys and girls in both urban and rural areas shows that girls are in more correct posture than boys with average differences of 3.05 and 2.05, respectively. 4. The NYSPT evaluation according to bodily parts are as follows : In the lateral head deviation, average angles of urban and rural boys are 7.39° and 6.02°, whereas average angles of girls are 6.52° and 6.98°, respectively. All of these are inclined a little to the abnormal ragne. In the low shoulder, average angles of urban and rural boys are 1.44° and 1.33°, and also 1.46° and 1.33° to girls, respectively. All of these are within the normal range. In the scoliosis, the percentage of urban students are higher than the one of rural students. The students in the severe scoliosis are 0.73%%, 8 out of 1142 students. 5. In the average scores about the types of legs, distribution percentages and indices of bowlegs are 27.2%, 3.85 in the urban and 43.2%, 3.75 in the rural boys, respectively. In the girls, they are 20.6%, 3.89 and 29.6%, 3.90, respectively. This shows bowleg is more dominant to the rural students. Distribution percentages and indices of knock-knees are 15.5%, 4.57 and 12.7%, 3.95, respectively, in the urban and rural boys. In the girls, they are 7.17%, 4.0 and 0%, 0 respectively. This shows knock-knee is more dominant to the urban students.

냉간가공한 각형강관 단주의 압축거동

유영찬,임재형,채영석 국립7개대학공동논문집간행위원회 2002 공업기술연구 Vol.2 No.-

Square steel tubular columns are widely used in high-rise buildings, where high bending and torsional load carrying capacity are required. The objective of this study is to investigate the structural behavior of stub columns with cold formed square steel tube. Buckling behavior of axially compressed stub columns with the cold formed square steel tube was studied experimentally. The experiments on the 26 specimens with the parameters such as width-thickness ratio were conducted under the axially concentric compression. In the experiment, square steel tubes were axially compressed slowly until they were completely collapsed. The measured results were presented and the local buckling strength of stub columns with cold formed square steel tube was evaluated by regression.

Dentacolor Resin System의 색안정성 및 물흡수도에 관한 연구

고영무,정재헌,최유석 大韓齒科器材學會 1995 대한치과재료학회지 Vol.22 No.2

The purpose of this study was to measure the color stability and water sorption of Dentacolor resin system at various time intervals over 6 week period. Ten, 20 x 1mm discs of the resin specimen were prepared according to ADA specification No.27 and cured with a photo-polymerization equipment(Dentacolor XS and Unilux AC). The color parameters of L*, a*, b* were measured with a computerized colorimeter(Hunter Associates Laboratory Inc., USA) in the transmittance mode. The total color change(ΔE) occurred during two different time periods was calculated using the following equation: ?? The amount of water sorption measurements was done in accordance with ADA specification No.27 for one week in distilled water at 37 ±1℃ and then stored extended up to 6 weeks. The obtained results were as follows : l. At first week, total color difference(ΔE) value of Dentacolor resin system was 1.430 ±0.664. 2. It was found that the range of total color difference(ΔE) of Dentacolor resin system was between 0.5∼1.430 for 6 weeks. 3, The amount of water sorption for one week was 0.30 ±0.119mg/cm²and it was lower than the 0.7mg/cm²/week for type Ⅱ composites in ADA specification No.27. 4. The amount of water sorption of Dentacolor resin system after 6 weeks was much more than its amount of water sorption of the first week, but it was not significant difference(p>0.05).

미술-과학 융합교육을 위한 융합교육프로그램의 필요성과 사례

공채영 한국방송통신대학교 통합인문학연구소 2011 통합인문학연구 Vol.3 No.1

Recently the importance of the convergence or consilience is widely recognized by many countries around the world. So they have augmented the research and development of the convergence education with national policy and financial support. The convergence or consilience among sciences, technology, art, humanities and social sciences is not a simple integration or synthesis of two heterogeneous fields, but a "junping together" of sciences, technology, art, humanities and social sciences for diverse purposes and methods. Based on recent social trends of the convergence among sciences, technology and art, the aim of this study is to identify the identification of basic concept. The next stage of research is to recommend concretely the convergence education program for facilitating the convergence education among sciences, technology, and art. As contemporary education theory holistic learning that relates students1 life and their learning through integrated curriculum, educators today also are encouraged to use integrated approaches to teach the convergence education which lead to inclusion of various disciplines inside and outside among sciences, technology, and art. Through this series of research and course of activities, it could facilitate a new convergence education program based on sciences, technology, and art. Also it could promote a convergent knowledge, creativity, and upright values. 최근 융합에 대한 중요성이 전세계적으로 널리 인식 되면서 융합교육에 대한 연구와 개발에 국가적 정책과 경제적 지원이 증가하고 있다. 과학기술과 인문사회과학 간의 융합은 이질적인 두 분야를 단순 통합하거나 종합하는 것이 아니라 다양한 목적과 방법으로 과학기술과 인문사회과학이 "함께 도약하는 것을 뜻한다. 본 연구는 과학기술과 예술의 융합에 대한 사회적 흐름에 근거해 융합에 대한 가장 기초적인 개념을 정립하고 과학기술과 예술 사이에 융합교육을 활성화시키기 위한 융합교육프로그램을 구체적으로 살펴 보고자 한다. 현대 교육이론들이 다양한 교과들의 융합을 통해 삶과 교육과정을 연결시켜 총체적 방식의 학습을 지향하고 있다. 그에 따라 최근 교육자들 사이에서 과학기술 예술 안과 밖의 다양한 영역들을 통합적으로 바라 보면서 이를 적극적으로 실천하려는 움직임들이 많아지고 있다. 이러한 일련의 흐름은 과학과 기술, 그리고 예술에 기반한 융합교육프로그램의 활성화를 촉진시키고 이들 교육프로그램은 학습자의 창의성과 올바른 가치관 증진에 기여하고 있다.

Dentacolor Resin System의 물성에 관한 연구

정재헌,고영무 대한치과기재학회 1996 대한치과재료학회지 Vol.23 No.1

The aim of this study was to evaluate the physical properties on Dentacolor resin system. Fifteen specimens(20mm in diameter, 1mm in height) of Dentacolor resin were prepared according to American Dental Association Specification No.27 and the color parameters of L*, a*, b* were measured with a computerized colorimeter(Hunter Associated Laboratory Inc., USA) in the transmittance mode. To measre the amount of water sorption and solubility, fifteen specimens were immersed in distilled water at 37±1℃ and then stored extended up to 20 weeks. Microhardness test were made on fifteen Dentacolor resin specimens using microhardness tester(Shimadzu, Japan) at a cross head speed 50μm/sec., loading time of fifteen seconds, and 50gm of load applied. To measure the shear bond strength between Dentacolor resin and three kinds of dental casting alloys, that is, Neocast 4(Au alloy), Novopal 3(Ag-Pd alloy), and Verabond(Ni-Cr alloy), fifteen specimens were cast into square paddles(15 mm ×15 mm ×1mm) according to the manufacturer's recommendation. Fifteen specimens were prepared in cylindric molds(6mm in height, 3mm in diameter) for the compressive strength measurements. Fifteen specimens were prepared in cylindric molds(3mm in diameter) for the compressive strength Measurements. Fifteen specimens were prepared in cylindric molds(3mm in height, 6mm in diameter) for the diametral tensile strength measurements. The specimens were tested on a universal testing machine(Model No. AGS 110-A, Shimadzu, Japan) at a crosshead speed of 0.1 inch/min, for the shear bond strength, compressive strength and diametral tensile strength. The abtained results were as follows: 1. Dentacolor resin system showed significant total color change(△E value:3.641 ±1.278) after 16 weeks and the range of total color change(△E) of that was between 0.5∼3.641 for 20 weeks. 2. The amount of water sorption of Dentacolor resin system for 1 week was 0.30±0.119mg/㎠, and the amount of mean water sorption was 0.36mg/㎠ for 20 weeks. 3. The amount of solubility of Dentacolor resin system for 1 week was 0.060 ±0.018mg/㎠, and the amount of mean water sorption was 0.044mg/㎠ for 20 weeks. 4. The shear bond strength between Dentacolor resin system and Neocast 4, Novopal 3, and Verabond were 21.029 ±3.743 MPa, 20.242 ±2.548 MPa, and 19.889±4.032 MPa and the differences of shear bond strength of Dentacolor resin system according the kinds of alloys were showed significantly(p<0.05). 5. The compressive strength of Dentacolor resin system was 116.15 ±23.02 MPa, and Diametral tensile strength of that was 48.59 ±5.95 MPa. 6. The microhardness value(V.H.N.) of Dentacolor resin system was 35.28 ±2.53 after specimens were made immediately, and that was 33.15 ±2.15 after 20 weeks. The results of microhardness value showed decrease as elapsed of time, but the differences of that were not significant as a function of time(p>0.05).