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이덕훈 韓日經商學會 1997 韓日經商論集 Vol.13 No.-
The Japanese automotive industry made a remarkable growth to become the greatest production country both in name and reality by recording 11,040 thousand Nos. of vehicles corresponding to 28.7% of the world production quantity in 1980 in comparison with 38,000 Nos. of vehicles corresponding to 0.7% of the world production quantity in 1940. At present, Japan is the World largest automobile production country among 30 countries which are able to produce motorcars, of the total production in the world. This study, therefore, is going to concern mainly on the Japanese Industrial Policy in order to find out major reason how Japan can become the world largest automobile production country.
스트레인 게이지를 이용한 두께 최적화 하단고정체에 대한 구조시험 평가
김재훈,사정우,김덕희 忠南大學校 産業技術硏究所 1997 산업기술연구논문집 Vol.12 No.2
The atomic fuel rods between the top and bottom end piece of reactor need to be extended for the high combustion rate of future-type fuel to increase the irradiation in the axial direction. For allowing the axial extension of the fuel rods, the space between the top and bottom end piece should be expanded. Thus the thickness optimization of the flow plate is necessary. This study was carried out the mechanical strength test by using strain gages as a function of flow plate thickness, the existence of skirt and loading condition for the Korean fuel assembly(KOFA). The experimental apparatus was designed for load conditions, uniformly distributed load and displacement. Test method using whiffle tree of uniformly distributed load has been comparatively conservative. The test results were compared with those of FEM analysis and the test method on bottom end piece was established.
이덕훈 대한경영학회 2003 大韓經營學會誌 Vol.16 No.7
The Japanese has hadard time due to an economic depression that extended over a long period after the bubble economy. Japanese management system was in the spotlight of the world as a model management system, but owing to paralysis of Japanese economy it is now regarded as not making any sense. What made the JMS(Japanese Management System) to be questionable? It is because as systematic factor of the JMS that shows close relationship between the government and enterprises falls behind in transparency, efficiency, value in the situation of information age that totalitarian culture (like life time employment system, seniority system) is regarded as Japanese speciality and that an individual ability takes priority. In other words, many factors which are regarded as Japanese specialty in globalization, the unification and opening of the world market doesn't suite standardization that overcomes the barrier of distance, time, and culture and doesn't regard an individuality as important. This globalization made Japan be regarded as suffering the collapse of management and inefficiency of the government and moreover the Japanese enterprise which were the represented by the life time employment is agitating Japanese society with dismissal. In this research, the Japanese globalization process, the rise and fall of JMS and the conflict and impact of the Japanese culture and system in the process of globalization would be analyzed in detail.
성정훈,강대원,이윤수,임준우,홍영호,이덕동 경북대학교 센서기술연구소 1998 센서技術學術大會論文集 Vol.9 No.1
High selective and sensitive thick film type methane gas sensors were fabricated and their sensing characteristics for various hydrocarbon gases were investigated. Raw material, SnO_(2)/Au, prepared by coprecipitation was even grain size. SEM, TEM, BET and XRD analyses were carried out for investigation of surface morphology and crystalline structure. The thick film devices using the above materials exhibited high sensitivity to methane gas at the operating temperature of 400°C. The sensitivity of SnO_(2)/Au+Pd thick film devices to methane gas was higher than that to the other hydrocarbon gases such as iso-butane and propane. The optimal adding amounts of Au and Pd were 1wt.% and 3wt.%, respectively. The sensitivity, S, is defined as {(R_(A)-R_(G))/R_(A)}><100, which R_(A) and R_(G) are resistance in air and that in the gas ambient, respectively.
이덕훈,이인표,박재수 韓日經商學會 1998 韓日經商論集 Vol.16 No.-
The study is of analyzing the developing tendency of national large retailer business through the comparition of Korean, American, Japanese ones with the reality of the Korean distributing industry under the process of industralization. Generally speaking, the changes in retailer institutions are made possible by changing the relevant leading positions as to content of the specific innovation in a retailer business is concerned, and the dynamic change of the retailer institution structure can be seen in the process. "Similar process and types" can be expected in the developing process of the retailer businesses in different countries when they fulfill the innovation in the different stages of economic development. However, "common models" do not exist at all. In conclusion, the similarities and differences of the businesses in the three countries can be found out through the comparition of the relevant developing processes. In this point, it is clear to notice the each situation in the department stores, GMS and large discount stores with the luxurious/fashionable and practical/functional tendency as the priority in American. Whereas the Japanese retailer businesses show mixed above characteristics. In other word, the style of retailer businesses can be seen in the mixed state of the luxurious/fashionable and practical/functional tendency of customers who considers who consider the food categories as the first demand. However, in Korea, the competitive advantage is rather weak as the short developing history of the distributing businesses and large retailers. Therefore, the operating states are considerably different although some similarities between the retailor businesses in different countries exist, when the convergence and movement of the population, growth of income, behavior and valuation are considered as the criteria, and when the exterior appearance is taken into account. In the end, in the light of the reality of immaturity in the environmental conditions of the above developing factors in the industrializing process, the developed state of retailer businesses can be seen in the large economical department stores in the Japanese model.
인산염계 내화물의 기계적 물성 및 내부식성에 대한 핵형성제 첨가효과
이덕용,이재춘,최광훈,김병균,신경숙 明知大學校 産業技術硏究所 1995 産業技術硏究所論文集 Vol.14 No.-
The effect of nucleants was studied on the mechanical property and corrosion resistance of phosphate refractories used for high temperature inorganic binder It was found that a mixture of TiO₂ and ZrO₂ nucleants yielded not only the best corresion resistant but the highest strength phosphate refractory. However, the effects of nucleants on the mechanical property of the refractories could not be identified in this study because each sample showed different porosity which was also presumed to affect the fracture strength of the refractory.
郭勳星,李斗秀,金定德 全北大學校 1980 論文集 Vol.22 No.-
This paper introduces a technique for implementing a second order recursive digital filter. The realization is based on the residue number system and sequentially multiplexing two look-up tables which are used for the operations of addition and multiplication. The data rate of the filter implemented with microprocessor is improved under some assumption.