http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
최석진,김병훈 한국세라믹학회 1984 한국세라믹학회지 Vol.21 No.2
Basic research on the formation of monolithic glasses from metal alkoxide has been done concerning gelling of silicon alkoxides and dehydration of those gells. The felling time were increased with increasing of Carbon number of alkyl radical of alkoxide and am-ount of water and the lower pH value of water. Large portions of water and organic materials were rem-oved below 25$0^{\circ}C$ and shrinkage of glass took place above 80$0^{\circ}C$ Therefore heating up to 25$0^{\circ}C$ and above 75$0^{\circ}C$ must be done gradually with rate of 0.5$^{\circ}C$/min.
崔錫珍 동국지리학회 1985 東國地理 Vol.- No.6
Marketing geography is a specific field of economic georgraphy and it actually helps the geographers to solve problems related with marketing. Furthermore, it is given much weight, in to day's urban geography research, in terms of its usefulness for the explanation of the hierarchy, the functions and the patterns of an urban community. Marketing geography started to be researched and developed because of the earlier modern times' growing interest in the international trade, the wholesale and/or retail trade, and the marketing areas. Among them, marketing areas became the subject of a fullfledged research for the first time in 1930's. and further researches on that subject have been carried out, with much emphasis placed on the spatial system analysis through "Central Place Theory", especially since B.J.L Berry's research in the late 1950's. In case of Korea, the marketing geography was introduced first, in the late 1960's arousing some interest and has been researched since the late 1970's. But as a matter of fact, comprehensive researches on its specific fields are not sufficient yet. The research fields of the marketing geography are different according to the geographers. However, its specific fields of research can be roughly classified such as the marketing areas, the measurement of a trading area, the shopping street and the wholesale and/or retail trade, etc. In other worlds, the chief and important subject of research of the marketing geography is to examine closely the characteristic features of the commercial districts. To be more specific, to explain how the commercial activities such as a wholesale and a retail are done in the commercial districts. Nowaday's research trends on each field of the marketing geography are roughly as follows; 1. Trading areas are examined closely: The scope of the trading areas and their changes are closely measured and studied. Beside, the structures of the trading areas are characteristically explained in terms of point, line, surface and flow. 2. The characteristics and the functions of the markets, concerete as well as abstract, are explained in connection with the location features of the markets, and also the changes of the markets according to the times are searched. 3. Researches on the wholesale trade are not sufficient, compared with those on the retail trade. That is because the circulation volume of the wholesale trade is very large and its trading area is very broad and complicated. But in today's geographical research, many efforts are being made to explain the pecularities and the differences in from the initiation and the location of the wholesale trade to its changes. 4. The retail trade, an especially much interest-arousing field of the marketing geography, is a good subject to be researched fullfledgedly. The research on the retail trade needs placing an emphasis on its conditions of location, the specialization and development according to its patterns, the formation of its hierarchy and its distribution. Recently researches on the consumers' behavioural patterns are increasingly carried out. 5. shopping street is a place in which the wholesale and/or retail activities are collectively done, and it is thought very important as a symbol of an urban community. In economic geography, this shopping street is considered, in an economic and commercial aspect, to be an element of economic activities. The distributions and the commercial functions of this shopping street are regarded as very important as a spatial area of an urban community. Therefore, the shopping street has become the subject of research in various points of view. By the way, in the urban geography, the shopping street is closely studied, as a constitute of an urban community, centering around the aspect of its commercial functions. To conclude, the chief and important task the marketing geography should carry out is to research on the commercial activity districts and the shopping street which is a spatial base for the wholesale and/or retail trade. Researches on the marketing geography should actively be done. For this purpose, the materials and data which have been collected through the previous researches should be utilized very positively.