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崔春鎬 漢陽大學校 1979 論文集 Vol.13 No.-
The application of statistical theory to sampling inspection by variables was first initiated by Dodge-Roming and later developed further by W.A. Wallis and A.H. Bowker. Based on the test of hypothesis, this theory lays too much emphasis on the construction of a mathematical theory. As a result, the practical application of this theory to curreut industrial conditions runs into many difficulties. The necessity of another practical theory which combines theory with practicality needs no special mention here. In this paper I introduced operating characteristic coustant into sampling inspection by variables in order for it to suit the existing conditions in industries.
朴鍾哲,金昌榮,崔春鎬 大韓神經精神醫學會 1970 신경정신의학 Vol.9 No.1
The experiment was performed on mature white male rats, weighing between 180 gm and 240gm. The experimental animals were divided into A,B and C subgroups, which 200mg of sulful per kg emulsified in olive oil was given orally for 4 days, 7 days and 12 days respectively. The control groups was given olive in orally in the same amount and for the same periods. In both control and experimental groups 100μc of ??or 7μc of ??? was injected intraperitoneally on the 4th, 7th and 12 days respectively. The animals were sacrificed 18 hours after the injections. The following results were obtained. 1. In both A and B experimental subgroups, the seminal vesicles, testicles and adrenals, showed remarkable weight increase while the ??? uptakes in the same groups were mildly increased. In C experimental subgroup the weight of the organs was either slightly increased or decreased, while ??? uptakes was remarkably increased. 2. After sulfur adminstration the thyroidal follicles contained thick colloidal substance and their size was mildly enlarged. However, in comparison with the control group, the form of the glandullar cells was of more cuboidal. The adrenal cortex showed hypertrophic changes and the atrophy of the medulla was so severe that it could be hardly recognized. 3. In comparison with the control group, the tunica mucosa of the seminal vesicles had smaller folds and the superficial cuboidal cell layers was atrophic, the cytoplasm was scanty, and the nucleus remained in the center of the cells. 4. The testicles of the experimental subgroups, compared with those of the control groups showed atrophic changes in the spermatogonium and spermatocytic layers.
崔春鎬 漢陽大學校 環境科學硏究所 1983 環境科學論文集 Vol.4 No.-
最近 環境汚染問題의 重大性에 따라 여러가지 汚染物質의 許容基準値 決定問題도 多角度로 考察되고 있다. 一般的으로 汚染物質의 測定値는 環境條件의 差異, 偶然的인 誤差等으로 이런 資料에 의하여 處理하는 데는 統計學과 密接한 關係가 있다. 그러나 統計學的인 側面에 대한 關心이 적고 處理方法의 開發 또한 不足한 實情이다. 따라서 이 論文에서는 汚染物質의 許容基準値決定에 測定値를 이용할 때 統計學을 應用하는 一部分을 考察한 것이다. In recent years, as the problems of environmental pollution are becoming increasingly more serious, many studies have been made on how to determine the allowable standard values of pollutants. On the whole, data on pollutants, when they are processend, have close connection with statistics because of differences in the conditions of the environment and eventual errors. But the reality of the matter is that little attention has been given to the statistical aspect of the problem. At the same time, there is much room for further development in the processing method also. Therefore this paper hopes to show how to apply statistics when using data to determine the allowable standard values of pollutants.
崔春鎬 漢陽大學校 1972 論文集 Vol.6 No.-
Very recently, the theory of probability has been applied in the field of engineering problems. In particular, the problem to decide reasonable maintainability to the system engineering is the one of the most important problems to design structures. To study maintainability, we have two ways to approach to the study of fatigue crack, one is experimental research and the other is analytic method. The experimental method has developed very rapidly. N. E. Frost, A. K. Head, D. A. Dugdale's achivements are distinguishable. In this paper, I study the maintainability by analytic method with a few hypotheses and construct a mathematical model with the theory of birth and death process to the cracks which yield by weight given in the objects. General formulars thus induced are analysed by Laplace transformation with the given assumptions.
崔春鎬 漢陽大學校 1973 論文集 Vol.7 No.-
This paper proposes to indicate with logical analysis a mathematical model to various phenomena arising out of planning and management. I have also tried, with regard to the management of automatic machines, to show different ways of applying the theory of queues in the case of M/M/1 type, and extending the idea, in the case of M/M/s type, thus comparing with many examples various degress of efficiency.