(Zn, Cd)S:Cu 형광체의 발광(PL, CL) 현상에 관한 연구

신영진,尹昌周,金富吉 全北大學校 基礎科學硏究所 1979 基礎科學 Vol.2 No.1

Photoluminescent and cathodoluminescent (Zn, Cd)S phosphors are prepared by firing at 850℃ in N_2 gas of atmospheric pressure for an hour. They are doped with (1) an activator CuS, (2) an activator CuCl, (3) a flux NH_4Cl, (4) both an activator CuCl and the flux NH_4Cl, an (5) not doped with either one. The crystal structure of ZnS phosphors powder is the mixed phase of cubic and haxagonal, while the powders of (Zn, Cd)S : Cu (Zn, Cd)S : Cu, Cl and (Zn, Cd)S phosphors are the hexagonal pattern under the same firing condition. Photoluminescent and cathodoluminescent cells are made with these phorsphors and their emission spectra are measured at room temperature after these materials are excited with 3650 A˚ light and cathode rays. These spectra are shifted from blue (green) to red wavelength as the CdS content of the phosphors is increased, The NH_4Cl flux is found to help the doping of the impurity energy level and it has SA center in SA emisson. The following two results are also observed about (Zn, Cd) : Cu;(1) the values of lattice parameter a are varied linearly with the molar fraction of (Zn,Cd) (2) the impurity changes with quadratic curve when the molar fraction is varied.

韓國 近代體操의 發達과 그 內容的 推移 : 形式體操時代를 中心으로 Focus on Formal Gymnastics Period

申榮吉,孫俊丘 慶北大學校 師範大學 1991 敎育硏究誌 Vol.33 No.-

The purpose of this research is to grasp the development and content shift of modern Korean gymnastics in formal period from 1895 to 1927. The results are as follows : a) Though some schools adopted gymnastics, in preparations to receive, as a school subject in Educational system period, concrete gymnastics activities were not presented enough. b) In school ordinance period gymnastics was a compulsory subject in most of schools and various kind of activities were shown to nurture physical strength. c) In Korea school ordinance period gymnastics didn't advance in its contents much more than those in school ordinance period. Gymnastics was a reflection of Japanese colonial educational policy and placed emphasis on the power of self-control rather than robust health. d) In Instruction syllabus period Swedish gymnastics was practiced and improved in quality. Gymnastics education came to have modern system, thereafter.

Moon Somersault에 關한 硏究

申榮吉 慶北大學校 師範大學 1980 敎育硏究誌 Vol.22 No.-

As follows a synopsis of the study on Moon Somersault. 1. Moon Somersault can be classified into various types: (A). The type that the contestant is to twist his body his body more than 360 degrees at the first somersault of the double somersault and perform a simple somersault at the second somersault. (B). The type that the contestant is to perform a simple somersault at the first of the double somersault and twist his body more than 360 degrees at the second somersault. (C). The type that the contestant is to twist his body more than 180 degrees both at the first and the second somersault of the double somersault. 2. Techniques of Moon Somersault in the horizontal bar, the rings, and the floor are the applications to the three types mentioned above. And the techniques of New Moon Somersault are derived according to how many times the contestant twists his body. 3. Horse Vault's Moon Somersault is expressed in the form that the contestant adds his twists to the whole process of a one-and-a-half-time somersault. 4. This study draws a plan on Moon Somersault in the parallel bars.

뜀틀(Long Horse)의 技術變遷에 따른 演技內容에 關한 考察 : centering around the Montreal Olympics

申榮吉 慶北大學校 1979 論文集 Vol.27 No.-

The summary of surveying and analyzing the tendency to perform the Long Horse is as follows: Of 100 male players, 76 of them were reported to perform such gymnasic maneuvers as the Hand Spring Salto (style A), the Hand Spring with Full Turn, the Tsukahara Vault (style B), and the Kasamatsu Vault. The Kasamatsu Vault especially received recognition as the best technique. In case of female players, they generally performed no more than three kinds such as the 1/2 Turn Back Somersault (style A,B), the Hand Spring with a Full Turn, the Hand Spring Salto (style A,B). This was well displayed by Nelly Kim, a USSR somersaultist, as she performed the 1/2Turn to Back Somersault with a Full Turn in a new mode. In case of Korea, it was found in the competition for selecting national representative players that the Tsukahara Vault(style A,B), the Hand Spring Salto were generally used by male players who participated in it, and that the 1/2Turn to Back Somersault, the Tsukahara Vault, the Yamashita Vault, the Hand Spring with a Full Turn were popular among female players.

마루運動의 演技傾向에 對하여

申榮吉 慶北大學校 師範大學 1982 體育學會誌 Vol.8 No.-

On the Floor Exercises of man contestants of the World Cup competition held in 1979 and 1980, the performance contents of winners (from 1st to 12th) were analyzed as follows; 1. The average scores were 9.542 in 1979 and 9.654 in 1980. 2. The degree of difficulty marked 4.7C, 3.5B, 9.4A in 1979 and 4.7C, 2.4B, 9.8A in 1980. The numbers of the elements of the additional points were 1.6 and 2.7 respectively, resulting superior qualiy in 1980. 3. On 1979 and 1980, 9 contestants (39.1%) performed Moon Somersault as their starting technique of tumbling and 6(26.1%) Backwards Double Somesault (style A) 9 contestants (39.1%) performed Backwards Double Somersault(A style) as the ending technique and 11(47.8%) Backwards Somersault with 2 Turns. 4. The new techniques with much difficulty were Backwards Double Somersault with 2 Truns and Round off →½ turn to Forwards Double Somersault. 5. The contents of the tumbling technique were as follow; ⅰ) Round-off marked 83.3% as the starting technique. ⅱ) Among 12 contestants, 10 performed 4 kind of tumbling techniques and the other 2 performed 3. ⅲ) The average of running paces was 1.84.

平行棒의 演技傾向에 關한 一考察

申榮吉 慶北大學校 師範大學 體育學硏究會 1976 體育學會誌 Vol.2 No.-

The results of this study analysis on performance tendencies in Parallel Bars are summarized as follows: (1) In the selection of performance techiques, the techniques, such as Backward Salto, Forward-swing Half-twist, Stable Cut, Diamidov, Cast, ect. are forming a main-stream of perfomance techniques in the parallel bars. (2) In the selection tendencies of performance techniques by style, Push-up style takes almost half of all styles. In order to prepare for required performance techniques, those in four styles must be throughly and evenly familiarized. (3) The selection patterns of performance techniques by degree of difficulty and easiness, are indicated as follows: In one style of techniques, an average number of kinds of such difficulty and easiness for each performer are represented as C=5.5, B=4, A=2 for performers who won in the international competition and as C=4.5, B=4, A=4.3 for performers who won in the Korea representation competition.

손짚고 뒤돌기의 動作分析

申榮吉,李基哲 慶北大學校 師範大學 體育學硏究會 1986 體育學會誌 Vol.14 No.-

The purpose of this paper is presenting helpful materials for direction and advancing skills by analysing motions of back handspring of the gymnasts who represent the province. After photographing back handspring motions of four college gymnasts who took part in the 64th National Athletic Meeting in the series of three-step running pace, round off, back handspring, tucked backward somersault with a movie camera (37 frame/sec), I could get the locus of motions. I compared the motions with ideal motions presented by specialist and get the following conclusion. 1. At the first landing, I found that they landed in a motion leaning forward by about 70°. I think this defect can be corrected through strong snap down practice in round off. 2. At the first landing, they erected their heads in 163°∼197°, and arms came down by 15° from the horizon when landing. I think this is a disadvantage to them in getting speed when the body is bent backward with arm-swing, and this defect can be corrected through the practice of landing with arms attached to ears. 3. At the phase from the first landing to the take-off, when bending the body backward, the head bent backward before swinging the arms. I think this is a disadvantage to them in getting sufficient speed when bending the body backward, and this defect can be corrected through the practice in which arms is attached to the arms intentionally in swinging arms backward. 4. At the phase from the first landing to the take-off, they swung their arms without relaxing the wrist. I think this is a disadvantage to them in bending the body speedily. 5. At the phase from take-off to hand touch, the legs were spread out during the inflight motion. I think this results from the gymnasts' habit of reducing the time which is used in tumbling by shorting their bodies, and this phenomenon happens among trained gymnasts unconsciously, reflectively and frequently. 6. In hand touch, the shoulder line was not cut, which is necessary so that the arms might be vertical against the land. I think this results from not getting sufficient speed in bending the body backward. 7. After the hand touch, the shoulder went forward and legs snaped down a little after the apex. I think this phenomenon happens because the hand off is delayed and the gymnast can't snap down the leg strong.

PVK와 TNF 사이에 형성된 전하이동 착물에 관한 연구(Ⅱ) : C. I. E 表色系에 의한 純度에 대하여 Purity by J.I.E color system

신영진,鄭吉煥,高錫梵 全北大學校 基礎科學硏究所 1978 基礎科學 Vol.1 No.1

Thin films of solid state were made from solutions of organic polymers of different molar mixtures of poly-N-vinyl carbazole (P.V.K) and 2,4,7 -trinitro-9 - fluorenone(T.N.F). The donor, P.V.K. and the acceptor, T.N.F. molecules form a charge transfer complex. Meassuring the color purity of the thin films by using the C.I.E color system we found that the color purity of these polymers was increasing as the molar ratio varied from 1:0.2 to 1:0.6, 0.2 and 0.6 being TNF. This means that these organic polymers form a charge transfer complex up to the molar ratio 1:0.6. It was also found that this charge transfer complex can be classified as intermediatly interacting one by electrical property of these polymers.

鐵棒 1回, 2回 및 3回 뒤공중돌아내리기의 比較 分析

申榮吉,金柄斗,安禹洪,金正子,吳東燮,朴宇奎 慶北大學校 體育科學硏究所 1987 체육과학연구지 Vol.3 No.-

The purpose of this study was to offer gymnasts data for successfully performing triple back somersault dismount(TBSD) and for designing training programs to progress gymnasts to the advanced dismount skills from the horizontal bar through comparative analysis of selected biomechanical factors of single back somersault dismount(SBSD), double back somersault dismount(DBSD) and TBSD. The subjects employed were a total of 4 male middle and high school gymnasts aged between 15 and 16 years. A motion-picture camera, fliming at a nominal rate of 54 frames/s, was used to record the performance of subjects on each trial. This camera was placed at a distance of 15 m from the inward pole of horizontal bar with its optical axis at right angle to this pole. The results obtained are summarized as follows: The mean release angle was 80.5° for the SBSD, 77.3° for the DBSD and 71.3° for TBSD. There were significant differences between the SBSD and the TBSD(p<0.01), the DBSD and the TBSD(p<0.05) but no significant difference between the SBSD and the DBSD. The angular velocity at release was 4.533 ㎭/s for the SBSD, 5.338 ㎭/s for the DBSD and 6.020 ㎭/s for the TBSD. There was a significant difference among these velocities(p<0.05, p<0.01). The linear velocity at release was 5.458m/s for the SBSD, 5.750m/s for the DBSD and 6.083m/s for the TBSD. In this case, we had a significant difference only between the SBSD and the other two somersaults(p<0.05, p<0.01). The shoulder angle at release was 170.5° for the SBSD, 167.0° for the DBSD and 154.3° for the TBSD. There were significant differences between the SBSD and the TBSD(p<0.05), the DBSD and the TBSD(p<0.05) but no significant difference between the DBSD and the TBSD. The hip and knee angle at release were increased respectively by increasing the number of somersault but showed no significant difference among these angles. The mean flight time from release to landing for each somersault was calculated; it took the subjects 1.315s to perform the SBSD, 1.345s to perform the DBSD and 1.416s to perform the TBSD. There was a significant difference among these somersaults with respect to time(p<0.05, p<0.01). The mean maximum height was 3,633m for the SBSD, 3,720m for the DBSD and 3,780m for the TBSD. There was a significant difference only between the SBSD and the other two somersaults. The mean horizontal distance was decreased respectively by increasing the number of somersault but showed no significant difference among these somersaults with respect to distance. The smallest hip angle during flight in the SBSD was 115.3° at 0.317s after the subject left the bar, for the DBSD it was 48.2° at 0.621s while that of the TBSD was 32.3° at 1,102s after release. The relationship between the time the smallest hip angle observed and the total flight time was determined; it took 24.1% of the total flight time of the SBSD to reach the smallest hip angle. In the DBSD, it took 46.2% of the total flight time to reach for the smallest hip angle and in the TBSD 77.8% of the total flight time to reach the smallest hip angle. From the above results, the gymnast would need to (1) increase angular velocity before release by manipulating of body shape, (2) change the release angle and (3) stay tuck position longer by shortening as quickly as possible the angle of each body joint to perform successfully the TBSD. Also to be able to perform quadruple back somersault dismount, a gymnast would need flight time of a minimum 1,782s.

跳馬運動(Vaulting Horse)의 特性과 技術的 構造에 關한 硏究

申榮吉,孫俊丘 慶北大學校 師範大學 1991 敎育硏究誌 Vol.33 No.-

Since German, Swedish and Danish periods in the early nineteenth century, gymnastics has been spread all over the world, technically developed and systematized as a modern artistic one. Men's gymnastics comprizes Floor Exercise, Parallel Bar, Horizontal Bar, Vaulting Horse, Pommel Horse and Rings. Women's gymnastics is made up of Floor Exercise, Uneven Bars, Vaulting Horse and Balance Beam. The evaluation of each event except for Vaulting Horse is divided into four individual factors-Value Parts, Execution, Combinations and Bonus Points. The evaluation of Vaulting Horse is distinguished from the others by means of the principles of one performance one technique. The purpose of this study is to grasp the characteristics ans technical construction of Vaulting Horse.