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Holographic Interferometry를 이용한 탄성 고무 인상재의 체적변화에 관한 연구
하치양,이성복,우이형 慶熙大學校 齒科大學 1995 慶熙齒大論文集 Vol.17 No.1
This study investigated the time-dependent dimensional changes of elastomeric impression materials using holographic interferometry. Six commercial impression materials, Permlastic(polysulfide), Xantopren VI, (condensation silicone), low and medium viscosity of Exafine, Provil (addition silicone), and Impregum( polyether), were selected. Steel plate was used as custom tray, and each impression specimen was 20 mm in width, 15 mm in length and 3 mm in thickness. Each impression material was evaluated at 30 minutes, 1, 2 4, 6, 8 and 12 hours after setting using real-time holography. The results were as follow 1. Xantopren VL and Permlastic showed relatively severe and continuous dimensional changes after setting. Low viscosity of Exafine, Provil, Impregum showed relatively slight dimensional changes with function of time and medium viscosity of Exafine showed almost no dimensional change from 2 hours after setting to 6 hours. 2. On initial dimensional changes within 1 hour, the amount of change in low viscosity of Exafine was the least and Xantopren VL was the largest. 3. On dimensional changes at 4 hours after setting, the amount 'of change in medium viscosity of Exafine was the least and the change of Xantopren VL was the largest. 4. In overall dimensional stability during 12 hours, medium viscosity of Exafine was the most stable and Xantopren VL and Permlastic were least stable.
張致根 광주대학교 1989 論文集 Vol.6 No.-
This Study is Purposed to search Scientific management and human relations as main theories of human management in organization and estabilish the stratesies of systems approach. Scientific management implies a rational-economic man. The doctrine of rational-economic man Classified human beings into two groups-the untrustworty, money-motived, calculative mass and the trustworthy, more broadly motivated, moral elite who must organige and mange the mass Scientific mangement implies essentially acalculative involement human relations approach is Suchas followings man is basically motivated by social needs and obtains his basic Sense of identify through relationships With others and more responsive to Social forces of the peer group than to the incentives and Controls of management. The manager instead of being the creator of Work, the motivator, and the Controller becomes the facilitator and Symphathetic Supporter Systems approach is presented the doctrine of Complex-man, man is more complex individual than rational-economic, Social, or self-auctualiging man Not only is he more complex with in himself, heing Possessed of many needs and Potenitals but he is also libkely to differ form his neighbor in the patterns of his own Complexity. The sucessful manger in systems approach must be a good diagnostician and must value a spirt of inguiry. Finally he must have the personal flex ibility and the range of skills necessary to vary his own behavior.
朴治正 건국대학교 1977 論文集 Vol.5 No.1
The aim of this article is to deal with Maoism in the context of the Chinese continuity. It is interesting to see how the Chinese traditional culture has influenced Maoism. It is true that the foundation of Maoism is Marx-Leninism. But it is also true that national characteristics and the idea of middle kingdom have a substantial impact upon Mao's political thought Therefore, it may be said that it is impossible to understand Maoism only from the viewpoint. of Marx-Leninism. Taking this position as the point of departure, the paper examines the impact of the major traditional Chinese thought such as Confucianism, Taoism, and Legalism upon Maoist thought and strategy. One of the findings in this paper is that Mao Tse-tung, though he is a manifest communist, could not be free from the traditional political culture of China and a second one is that he was a Chinese before he was a communist in terms of the patterns of thinking, feeling, and behaving. And finally, there should be more serious researches on the relationship between Maoism and the traditional thoughts of China in the coming years.