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姜信寓,閔丙卓,崔東柱 충북대학교 농업과학기술연구소 1987 農業科學硏究 Vol.5 No.1
In order to find out the regional differences of rural-urban migration pattern, this study was conducted to analyze the field survey data on 18 Ri-Dongs of Chungbuk province. The results are summarized as follows. Firstly, the proportions of infant and the aged to youths and manhood are relatively higher than the national mean of them. It says that the quality of rural labour power has been decreased. Secondly, in the rate of the population migration among regions, the exurbs are higher than the suburbs. Thirdly, the migration pattern is, for the most part, the drift to the cities, and of these 80.2 percent is single migration. Fourthly, the migration rate of lower income farms is higher. The major accupations of the migrants to the cities is simple workers or the technicians. Fifthly, the major motives of the migration are lower farmhousehold income and children's education. Specially the suburbanite is greater in the former and the exurbanite in the latter.
Enhanced, Parallel Orientation of Liquid Crystal on Phthalimide Substituted Polystyrene Film
강신우,주창하,박찬혁,김태형,강효 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.0
We synthesized phthalimide substituted polystyrene (PPH#) series, where # is the molar ratio of phthalimidoyl moiety, by substitution reaction to investigate liquid crystal (LC) orientation behaviors. The PPH# films exhibited good optical transparency in visible light region than polyimide (PI) film, commercialized in display industry. The LC cell made from pristine polystyrene film showed perpendicular orientation with respect to rubbing direction, whereas the LC cells fabricated with PPH# films exhibited parallel orientation when the substitution ratio was more than 20 mol%, respectively. Additionally, long-term stability of the LC cells made from PPH# series were remarkably enhanced as well as ultraviolet stability than those of LC cell made of polystyrene. Therefore, this study contributes to the technology of producing planar and parallel LC orientation on polystyrene derivatives and can be applied to next-generation display industry including flexible display.
바람맞이 울타리 施工物에 의한 山地砂防效果에 관한 硏究
姜信佑 尙志大學校 1983 論文集 Vol.4 No.-
This study has been made to find out more effective way of Vegetation establishment on severely denuded Forest Land from Wild cover wall control regimes. Various environment factors were measured to estimate windcover of different sites. Wind influence on growth of cover Vegetations, 20cm cover wall, 30cm cover wall were analyzed. The Study was conducted on Cut-slopes of road-side having slope condition of 10°∼20°indegrees and 10m in length derived fom slope grading, The main results obtained may be summarized as fallows. Field Experiment includes height growth, survival and coverage analysis of cover Vegetution Alnus Japonica STEUD, Robinia pseudo acacia L., Pinus thunbergil PARL, Arundinella hirta, var, Ciliare, Themoda faponiea-Tanka with 3 wind cover Wall treatments, on 3 slopes (steep.20, Moderate 15°, Gentle 10°) during dry season (1 March∼15october) 1) As a seasonal wind blows to the northeast in the north part of the eastern area, we must select the land for operation of wind cover wall. 2) As a Wind cover wall protects seedlingr with in 30cm in the steep, and seedlings survive slow. But seedling grows well within 10m to the counter direction. 3) Robinia pseudo acasia L. grows well in seedling area and its growth rate was similar to general trees, ant Pinus thunbergii Parl was pressed by rapid completion tree. 4) The growth rate of seedlings has increesed six times irexecution of work in the second year and ground cover by seeding seed has increased one and half times.
강신우,Kang Shin-Woo 한국가구학회 2004 한국가구학회지 Vol.15 No.2
The works of Alessandro Mendini doing a big role in Italian design give us fresh impetus and the message on future design. His work activity has created new space and given the second life with arranging radical and fresh visual ornaments by using various materials. His design works have been challenged on fixed and ordinary thought. He applies gorgeous and plain natural colors. When he develops idea into the form, his works hold meditation and clear subjectivity. Alessandro Mendini makes us aware that his work of arts connects human spirit with thing.
山林土壤統에 對한 소나무 현사시나무 造林樹種의 施肥效果에 關한 硏究
姜信佑 尙志大學校 1980 論文集 Vol.1 No.-
This Experimentation aims to study on the characterics of tree growth by forestry land soil system and the effect of applied fertilizer by kind of tree for obtaining basic data on application of fertilizer to forestry land and to further in vestigate the restriction factor of tree growth by soil system for promotion more effective application of fertilizer to foresty area 1.The characteristics of tree growth by soil system showed that tree growth was worst on erosive soil, bad on red, red, and yellow soil and generally good on brown soil. 2.The growth of pinus seems closely related with the content of K20 in the soil and the growth of PH was bad on neutral or alkali soil and good on weak-acid soil in growth greatly depended upon the contene of OM or FN 3.As Hen poplar is a kind of tree requiring for a special soil, its growth required for fertile soil and the content of OM. N. P.205, K20 was propertional to its growth 4.The growth of pinus and Hen poplar was good on the soil containing much sand but bad on the soil containiy much clay