레이저 안전

김정묵 한국레이저가공학회 2000 한국레이저가공학회지 Vol.3 No.2

산업용 고출력 YAG레이저 발생장치의 개발과 응용

김정묵 한국광학기기산업협회 2002 光學世界 Vol.14 No.4

體育科 入試 實技考査種目의 妥糖性에 關한 硏究

金正默,林聖愛,李來華,金炳斗,安禹洪,李敏炯,金基學 慶北大學校 師範大學 1977 敎育硏究誌 Vol.19 No.-

The following conclusion has been derived from the foregoing results of analysis and observation. First, we found, in this proposed system, reliability, objecivity, and individuality. Second, this type of system must be able to measure numerable testees. Third, testees are regulated that they are brought to the same condition in which their willful adventage are not allowed, Fourth, when considering the foundamental physical strength and skills can be evaluated in general throughout all skills areas of physical education, the following items of skills are recognized to have the advantages and disadvantages which relatively lack or relieve one another. However, under various conditions of the prevailing system of the entrance physical test, the following measurable items of physical skills selected are concluded as having highest validity primarily for the physical entrance examination. 1. Side Step B Style 2. Zigzag Run 3. Wall Pass 4. Standing Long Jump

體育活動을 通한 새마을 運動의 成果 擧揚 方案 : 새마을 農民體操 創案을 中心으로 Centering around creative Saemaul Farmer's Exercises

金正默,金基學,申榮吉 慶北大學校 師範大學 1979 敎育硏究誌 Vol.21 No.-

The research is pertinent to the actual health conditions of farmers in this country. Among the diseases from which they suffer are those involving stomach, spinal column, shoulders, and the lower limbs. For that matter, the Saemaul Farmer's Exercises are made up with the goal of refreshment, preventive correction and distraction as well. Futhermore, the exercises of the total body aim at making progress in physical strength. The exercises consist of thirteen different motion; the movements are done in two-dimension, these exercises are for both begginers and for skillful people. The frequency of repeating motions becomes different according to sex, and physical strength. Ustally sixteen respiratory intervals are for the weak, the old, and females; thirty-two respiratory intervals are used by the strong and young, predominatly by male. The exercises themselves have flexibility which makes it possible for individuals to increase or reduce the amount of motion. There are thirteen kinds of movements in the following order: 1) Stretching up 2) Bending and Swinging neck 3) Twisting and Revolving Arms 4) Widening, Bending, and Straightening Limbs 5) Stretching Arms while Tightening Chest Muscular 6) Side Stretching 7) Stretching Body Back and Forth 8) Twisting from side to Side 9) Lifting Thighs in turns and Turning Waist Over 10) Twisting and Stretching Body Back and Forth 11) Jumping on Tiptoe and Hopping 12) Lifting heels and Putting Weight of Body on Toes 13) Controlling Breath, both Inhaling and exhaling

여름철 유행성질환의 예방과 치료

김정묵 대한결핵협회 1992 보건세계 Vol.39 No.8

筋의 生理的 收縮에 關한 考察 : Training을 中心으로 Chiefty on Training

金正默 慶北大學校 師範大學 1978 敎育硏究誌 Vol.20 No.-

1. There are three types of muscle contraction; Concentric, eccentric, and isometric Contraction. Concentric contraction is the action to contract muscle by shortening it. And both the actions belong to istonic contraction which is a kind of dynamic contraction. The other is isometric contraction, belong to static contraction, which is the action to contract muscle without changing its length. But isometric contraction is thought to be devided into concentric and eccentric contraction. These two actions seem to be similar because there is no apparent change in the length of muscle contraction, but they are different from each other, in that the first is substantially based on flexor (shortening muscle), the second on extensor(lengthening muscle). And so both the muscle groups must be equally exercised in training physical strength; Otherwise physical strength will not be equally balanced. As a result, it is believed that muscle contraction is divided into four types: two in isotonic contraction, the others in isometric contraction. And muscle training is supposed to be carried out effectively with these four types of muscle contraction. The above is diagrammed as follows: ◁그림 삽입▷(원본을 참조하세요) 2. There are two ways of contracting muscle in isometric contraction. One is isometric lengthening which makes concentric into eccentric contraction by compulsory measures. The other is isometric shortening, concentric contraction. The former, which is estimated to be more powerful than the latter by 20-30 percent, consequently it settles ploblem betwen grip strength and back strength, is expected to play an important part in the actual training of physical strength. But it is. far from my suggestion here. My suggestion is that, not by compulsory measures but by voluntary measures, concentric contraction should be transformed into eccentric contraction. 3. In strengthening muscular power, we are mostly dependent upon weight training, widely used up to now, which is the way of isotonic training. But here are several ploblems involved: the relation with speed, the effect on muscle groups, and the combination of eccentric training with concentric training. And in the way of isometric training there are also some problems involved: the relating between concentric training and eccentric training, how to arouse the trainer's interest, and the invisible outward aspect of motions in muscle. Consequently, it is believed that the most effective way of training muscle will be realized, by compensating for the weakness of isotonic training with the help of isometric training and vice versa.

肝癌과 肝硬變의 胃液分泌動態에 關한 硏究

金貞默,高侊道 고려대학교 의과대학 1981 고려대 의대 잡지 Vol.18 No.3

In this report, gastric analysis, fasting serum gastrin and secretin concentration had been carried out in 45 cases of primary gapatoma and 54 cases of postnecerotic liver cirrhosis. Higher levels of gastric acid and papsin output, increment of gastric acid output and trtragastrin-stimulated volume rate were observed in primary hapatoma and postnecrotic liver cirrhosis with peptic ulcer than in those without peptic ulcer. In conclusion, in was suggested that gastric and pepsin might play an important role in peptic ulcer formation in primary gapatoma and postnecrotic liver cirrhosis and that the manner of gastric secretion and mechanism of ulcer formation in peptic ulcer without liver disease might be different from those of liver disease with peptic ulcer.

맨손 체조의 一硏究

金正默 慶北大學校 師範大學 1964 敎育硏究誌 Vol.2 No.-

The Free Exercises was designed artificially. So it should answer the purpose of enhancing the softness, flexibility and mobility of our muscles and joint regions at every exercise. In this respect, it differs from other sports and games which use instruments and whose main, aims are for entertainment, even if it started from the need of our daily life with them. It is true that these sports and games produce good effect on body as a whole. But some parts of them are barely effective on our body, and sometimes even harmful. On the other hand, in the Free Exercises the swinging of hands, the bending of knees, the bowing of body, almost every motion has its own object and helps develop our body and mind directly. It is probable that in practicing the Free Exercises we follow the order and the way of exercises our predecessors had fixed, without critical examination. Here arises the need of re-examining it on the dynamic and antomic foundation, I have studied some important and needful points in the exercises of legs, neck, arms, chest, flanks, back, abdomen and body here. The conclusion is: 1. All exercises must have a process developing the flexibility of joint regions and the softness of muscles by .bringing the big muscles into extreme action. 2. Avoid the duplicatiin of exercises which practice the same muscles and joint regions, though their names are different. 3. We gain the strongest power and speed when the movement of the center of gravity harmonizes with the exercises of arms. 4. The swinging and turning of hands, which help the other parts of our body when we practice exercise, must be used properly. 5. It is necessary to take correct poses to balance our body, but it is also necessary to develop the speedy and effective way of taking balance from an unbalanced position. 6. A systematic practice of rebounding increases the softness of action with rhythmicality. 7. It is necessary to vary the way of exercises one by one, for example, the swinging of hands, the bending of knees, turning of course and changing of stability.

體操競技 運動素質點 算出에 關한 硏究

金正默,申榮吉 慶北大學校 師範大學 1976 敎育硏究誌 Vol.18 No.-

Finding in this study are summarized as follows: 1. for man-10(r=0.36∼0.59) A. Through the stick r=0.59 t=6.2003 B. Knee dip r=0.55 t=5.5840 C. Half level r=0.52 t=5.1628 D. Double heel click r=0.51 t=5.0255 E. Wall pivot r=0.50 t=4.8849 F. Human ball r=0.48 t=4.6414 G. Full left turn r=0.39 t=3.5861 H. Crab bend r=0.37 t=3.2842 I. Grapevine r=0.36 t=3.2671 J. Side kick r=0.36 t=3.2671 2. for woman-10(r=0.45∼0.74) A. Horizontal to perpendicular r=0.74 t=8.3384 B. Single squat balance r=0.61 t=5.8627 C. Double heel click r=0.59 t=5.5651 D. Squat voult r=0.53 t=4.7599 E. Korean stand up r=0.53 t=4.7599 F. Tip up(Frog hand stand) r=0.50 t=4.3970 G. Bear dance(Russia dance) r=0.50 t=4.3970 H. Sit up r=0.49 t=4.1061 I. Stork stand r=0.46 t=3.9455 J. Wall pivot r=0.45 t=3.8376 3. Marking Two times each score is given when succesfully performed in first of three chances in test. Original score in the second or third performance. 0 score in failure. All score is 50 and each is(r×10). Following is each score for man and woman. for man; A=7, B.C=6, D.E.F=5, G.H.I.J=4 for woman; A=8, B.C=6, D.E=5, F.G.H.I.J=4 100score will be for man and woman all together.

學校體育施設에 關한 一硏究

金正默 慶北大學校 師範大學 1972 敎育硏究誌 Vol.14 No.-

Ⅰ. The aim of this study A. To examine whether the directives of the physical education facilities issued by the Ministry of Education are, in terms of items and their quantities, pertinent to carrying out the physical education curriculums. B. To check whether tsudents are making the best use of the facilities already installed or equipped. C. To find out how often the present facilities are utilized and what kinds of new facilities would meet students' desire. It is the purpose of this study to clarify the questions about the standardization of the physical education facilities by scrutinizing the above mentioned items. Ⅱ. The method of reserch A. In comparison with the directives of physical education facilities B. Check up on the frequency of use of the materials 1. Survey of the frequency of use of the materials 2. Spot check of the frequency of use of the materials C. Survey of the materials students want to be provided with 1. Inquiry about whether students want to increase the number of the facilities which are already in use. 2. In quiry about whether they want new facilities Ⅲ. Conclusion and proposition A. It is reasonable to say that the directives of the physical education facilities must be established in accordance with the physical education curriculum. As "recreation" is shown in the different column of the curriculum, facilites for the physical education must be devided into two categories: the essential materials which must be provided by all means and the materials which are encouraged to be provided B. As shown in the survey questionnaire about the frequency of use of the materials in hand and the spot check on the same item in regard with their quantity stated in the directives of physical education facilities, primary schools need more facilities for games.