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      • 기름의 水面被膜에 따른 再曝氣係數의 變化

        閔盛基,孫晋彦 동아대학교 환경문제연구소 1979 硏究報告 Vol.3 No.1

        본 연구는 기름의 오염이 해양 및 하천에 미치는 영향을 검토함에 있어서 그 기초자료 내지 공업적 적용 방법을 알아보는데 있으며 대기에서 재폭기 계수의 변화를 측정, 고찰하는데 있다. 기름은 A-중유를 사용하였으며 수온은 5∼35℃까지 비교적 넓은 온도분포에 대해 실험적으로 검토하였다. 본 실험에 있어서는 유막이 존재할 때 재폭기 계수 k₂는 20∼40% 저하하고 온도계수 θ는 1,040으로 상승하여 DO평형농도는 최고 11%정도 증가함을 알았다. The purposes of this research are to find out the basic data for the examination of the effects of oil pollution upon the reaeration phenomena in seas and rivers, and the industrial application of the data, to measure and study the changing of reaeration rate of oil-covered pure water. Experiments were carried out with bunker-Atype petroleum as a covering material and at comparatively wide-ranging temperatures(5∼35℃). In the experiments, the changing of the reaeration coefficient k₂, and the temperature coefficient as well as that of the equilibrium concentration of dissolved oxygen in case of oil slicks were examined.

      • KCI등재

        정신과 자문에 있어 자문의견의 반영도

        민성 大韓神經精神醫學會 1982 신경정신의학 Vol.21 No.4

        The authors studied consultees' acceptance of psychiatric consultants' opinions on 602 inpatients who were referred to the department of psychiatry at Yonsei University Hospital during the period from January 1st to December 31, 1981 and also on other related problems which psychiatric consultation-liaison service is facing in the general hospital. The results showed that the frequency of consultation was still as low as 2.41% of total inpatients, but did show some increase comparing with author's previous study in 1977. The demographic data showed nothing significant except that the department of internal medicine had referred most patients. Survey of the medical records revealed that many consultees had already prescribed psychotropic drugs even before consultation in spite of their lack of understanding on the patients' psychiatric problems. Of psychiatrists' diagnoses, neurotic depression was most frequent. And gastrointestinal system was most frequently involved organ system, which seems to reflect the characteristic tendency of somatization in Korean patients. Psychiatrists' opinions regarding psychiatric diagnosis were accepted in 68.3% of 414 patients recommended. Recommendation of psychological test, psychotherapy and transfer to the department of psychiatry were accepted in only one third of patients recommended. However, recommendation of psychotropic meditation was accepted in almost all patients. This gap seems to reflect nonpsychiatrists' typical attitude toward psychiatric consultation. With these disturbing findings, the author discussed on the strategies for improving nonpsychiatrists' understanding of possible psychiatric problems in their patients and undesirable attitude toward consultation-liaison service of psychiatry.

      • 《四時纂要》의 種木綿法에 대하여 (下)

        閔成基 釜山大學校 1989 人文論叢 Vol.34 No.1

        The agricultural book, Ssushih-tsuanyao, was written in the late Tang Dynasty. By the way, its edition, which was reprinced in Korea in 1590, was found in Japan in 1960. It contains the method of cotton culture written in 171 Chinese characters. According to some scholars of agricultural history, it is their general opinion that it would be only another version appended by later one, not like the original of the late Tang Dynasty. This paper was intended to accomplish the following tasks to examine the authenticity of the document : The first was to analyze the content of the document ; the second to compare it with the method of cotton culture written in the later Chinese agricultural books : and the third to compare it with the other Korean one. The obtained results were as follows . First, the method of cotton culture recorded in the Korean edition was not only different from that of the other items in the book, but also from that in the later Chinese agricultural books. Second, it was rather similar to the other Korean agricultural books in culture techniques and in terms. Accordingly, this document is proved to have been appended by the later one. But there is much likelihood that it would be appended not in the Chinese Tang or Sung Dynasty, but in 1590 when it was reprinted in Korea. If this conclusion is right, the method of cotton culture in Ssushih-tsuanyao, which has been regarded as the Chinese agricultural method, must be recognized as the Korean one. Therefore, it is 6il years earlier at the time of its publication than Nongka-jipsung (論家集成), which has been regarded as the oldest document about cotton culture in Korea. For the above conclusion, we should make sure of the following two points succeedingly : One is the point that it should not be in contradiction to the current agricultural method of those days of 1590 when the book was printed. Another is the other point that in what historical background it was appended and printed in Korea. This matter was dealt with in the second half of this paper.

      • KCI등재

        적외선 검출기 개발가능성 및 대안분석 연구

        민성,김철환,김경수,Min, Sung Ki,Kim, Chul Whan,Kim, Kyoung Su 한국시스템엔지니어링학회 2005 시스템엔지니어링학술지 Vol.1 No.1

        The purpose of this paper analyze development feasibility and alternatives for infrared detector development in both technology and cost. Infrared Detector is core component of Thermal Imaging System and developed by ADD from 2006 10 2008 year. We got raw input data from development and technical expert, and then analyze cost and technology for development feasibility, and alternatives study. Technology level is analyzed by TRL(Technology Readiness Level) and AOA(Analysis of Alternatives) is done by development cost estimate. Estimating the development cost, we use SEER-H that is parametric cost estimating tool based on Knowledge Base. This study can help those who are related to the cost and development feasibility analysis of other weapon systems.

      • KCI등재

        강박장애의 생물학

        민성 大韓神經精神醫學會 1990 신경정신의학 Vol.29 No.4

        Biological, phenomenological and pharmacological studies on obsessive-compulsive disorder were reviewed. Obsessive-compulsive disorder has some common manifestations with other psychiatric disorders, particularly depression, which are known to have biological findings as important etiologies. There are many reports on family studies and twin studies which have shown evidence that obsessive-compulsive disorder is a genetic disorder. The effect of psychosurgery, some experiments stimulating the brain, and development of obsessive-compulsive symptoms in brain disorders suggest the anatomical basis of obsessive-compulsive disorder. Many pharmacological studies suggest that serotonin is closely related withobsessive-compulsive disorder. Integrating these findings, it has been suggested that a software package for genetically related ritualistic patterns of behavior is located somewhere in the basal ganglia, connected with the limbic system and frontal lobe. Stress or stimuli, which are perceived as being dangerous, release those ritualistic obsessive-compulsive behavior patterns stored in the intrinsic package circuit. Once the circuit is operating, this obsessive-compulsive behavior can not be controlled by will. The proposed uptake blocking drugs such as clomipramine and fluoxetine may inhibit this process. However, the etiology of obsessive-compulsive disorder could not be this simple. Thus, the integration of these biological theories and psychodynamic explanations will be a very stimulating research subject in the future.

      • KCI등재

        시스템엔지니어링 프로세스에 의한 국방 분석평가자료 수집체계 연구

        민성,최순황,Min, Sungki,Choi, Soonhwang 한국시스템엔지니어링학회 2005 시스템엔지니어링학술지 Vol.1 No.2

        Defense analysis & evaluation includes menace analysis, validation analysis, problem analysis, scientific technical analysis, technical trade-off analysis, alternative analysis, cost analysis, etc. Reliable related data is required to perform these analysis activities efficiently. but in case of these defense analysis & evaluation data acquisition system, the data is insufficient and scattered about each organization. The data of database system is also not utilized sufficiently. Abroad technical data is also low level data such as catalog or military officer's collection. Therefore, this paper propose defense analysis & evaluation data acquisition system by systems engineering process. we also propose construction method of data acquisition system.

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