都市와 農村의 消費構造分析

金洪哲 동국대학교 농림과학연구소 1971 農林科學 論文集 Vol.4 No.-

1. The consumption structure of urban and rural communities was analysed by means of a cross-sectional analysis based on the results of family income and expenditure survey. 2. The composition of consumption expenditure is rapidly changing compared with the increasing rate of household expenditure for consumption. 3. The change in the consumption structure of our country shows a similar phase to the trend man-ifested in a longrange process of elevating the standard of living along with economic growth of the developed countries. However, a rapid change in a short span of time correlated to a gradual change is attributable to increasing trend of extravagant consumption affected by the propensity to consume of the developed countries. 4. The Engel's coefficient is low in the gross consumption expenditure. This indicates the improvement of the living standard, As is shown in Table 10, the composition ratio of food and drink is 43.4% of urban communities and 49.0% of rural communities, respectively, in 1969, which show a higher ratio compared with 30% of the developed countries. The consumption ratio of living expense was increased it urban communities to 18.3% in 1969 from 14.9% in 1963. However, it does not come up to 30% of the developed countries. In the case of miscellaneous expense, it was also increased in urban communities to 24.0% in 1969 from 12.9% in 1963. In rural communities, it was increased to 18.4% in 1969 from 12.9% in 1963. This ratio also does not come up to the 30% level of the developed countries. It may be seen, therefore, that the composition ratio of consumption in our country show, in general a consumption pattern of seeking after material interests as a matter-of-fact in both urban and rural communities.

主要樹種에 對한 木片, 葉, 樹皮의 燃燒性 硏究

金昌浩,李時泳 동국대학교 농림과학연구소 1992 農林科學 論文集 Vol.16 No.-

This study was carried out to analyze the ignitability of wood, leaves and barks of 8 Korean tree species. The ignitability was examined with an igniter, ISO―5657 Fire Tests―Reaction of Fire―Ignitability. The results were as follows. 1. Wood samples were collected from 8 tree species, Pinus densiflora, P. koraiensis, P. rigida, P. thunbergii, Larix leptolepis, Abies holophylla, Populus euramericana and Quercus acutissima. Among them, wood of Larix leptolepis and Quercus acutissima were less ignitable, but Pinus densiflora, P. thunbergii and Populus euramericana were more ignitable. 2. Leaf samples were collected from 8 tree species, Pinus densiflora, P. koraiensis, P. rigida, Prunus serrulata, Betula platyphylla, Abies holophylla, Populus tomentigrandulosa and Quercus acutissima. Among them, leaves of Pinus rigida and P. koraiensis were less ignitable, but populus tomentigrandulosa and Quercus acutissima were more ignitable. 3. Bark samples were collected from 8 tree species, Pinus densiflora, P. koraiensis, P. rigida, P. thunbergii, Prunus serrulata, Larix leptolepis, Corylus heterophylla and Quercus acutissima. Among them, barks of Corylus hetreophylla and Quercus acutissima were less ignitable, but Pinus koraiensis and Larix leptolepis were more ignitable. 4. The time to reach ignition point for non―conefer leaves showed 6.5 times faster than that of conifer leaves because non―conifer leaves were thinner than conifer leaves in thichness. 5. The correlation between the fuel humidity(X) and ignition time(Y) is intimate, but that for barks is not intimate. These relations are showed by the following equations. Wood : Y = 18.7X+80.2(R^2=0.44^**) Leaf : Y = 2.1X-9.7(R^2=0.73^**)

피나무와 찰피나무 天然集團의 葉型質變異

李敏淳,金昌浩 동국대학교 농림과학연구소 1992 農林科學 論文集 Vol.16 No.-

This study was carried out to provide the fundamental data needed for tending improvement of natural forest particularly two Tilia species, T. amurensis Rupr, and T. mandshurica rupr. et Max. the leaf form index due to population differences and individual tree variation within a population. To implement this study, 4 populations of Tilia amurensis dominated and 3 populations of Tilia mandshurica dominated which have been naturally created and distributed in Kangwon Province were selected and analyzed their variations of leaf form. Obtained results are as follows : 1. The variations of 6 indices of leaf form in both Tilia amurensis and T. mandshurica showed highly significant differences among individual trees within a population. But the differences presented among populations in T. amurensis were significant with following indices, such as blade length/vein number index and blade length/serration number index and the differences presented among populations in T. mandshurica were significant blade length/serration length index at 5% significance level. 2. The coefficient of variation in T. amurensis showed the highest of 116.86% for blade length/serration length index of Mt. Odae population however, Mt. Kyebang population showed the lowest of 9.94% for blade length/widest width index. The coeffient of variation in T. mandshurica population showed the highest of 45.31% for blade length/serration length index Mt. Cho˘mbong population but Hangyeryo˘ng population showed the lowest of 10.23% for blade length/widest blade width index.

森林環境效果의 公共財的 性格糾明에 關한 硏究

尹和榮,李相植 동국대학교 농림과학연구소 1992 農林科學 論文集 Vol.16 No.-

枸杞子 體細肥雜種 合成을 위한 生物工學的 基礎硏究

朴敎秀,朱明七 동국대학교 농림과학연구소 1991 農林科學 論文集 Vol.15 No.-

The present study was carried out in order to develop techniques for rapid mass propagation and afford the basic information for somatic hybrid of Lycium chinense, used commonly as landscape purpose and medicinal resource. Through biotechnology, bud culture, callus culture, protoplast isolation and culture, fusion and gene transformation were examined. Results obtained were summarized as follows ; 1. Plantlets were developed from axillary buds attached to the stem of the current year growth collected in early June and cultured on MS media supplemented with 1.0㎎/l IAA and 2.0㎎/l Kinetin by 56% as the highest yield rate. 2. The highest rate of shoot induction was resulted at 0.5㎎/l kinetin, root induction at MS + 1.0㎎/l IAA + 2.0㎎/l kinetin (56%). 3. The rate of plantlets formation supplemented with 1.0㎎/l IAA and 2.0㎎/l kinetin was the highest and WPM (60%), MS·SH (50%), B_5 (40%) and GD (30%) media gave the result in descending order. 4. Plantlets (10-12 ㎝ of length) survived without fail after being transferred to pots with a mixture of perlite : vermiculite : peat (1:1:1 v/v/v). 5. The leaf collected from in vitro cultured plants cultured on MS media without growth regulators supply gave 60% callus formation and 40% shoot induction. 6. The highest protoplast yield and viability were resulted in the treatment plot of 3.0% macerozyme, 1% cellulase R-10, 0.4M mannitol, pH 6.2 and incubation for 6 hours. And the more effective was at the more juvenile leaf tissue. When protoplasts were cultured at 5x10^4/ml density in MSP_19M medium, the first budding occured at 18 days after culture and 28 days later cell colony was formed. 7. The highest cell fusion yield was 29.6% between leaf cells and 5.1% between leaf and root cell, using 30% (W/V) polyethlene glycol (PEG) concentration, 10 minutes treated and 2x10^5/ml protoplasts density from seedlings in virto. 8. When leaf was inoculated with Agrobacterium tumefaciens ATCC 11157, tumour was formed and rooting was initiated 8 days after inoculation and the growth was continued for 3 weeks. And the rate of tumour formation was 10%. The genetic transformation was confirmed through the opine analysis by the electrophoration.

잣나무 成長量의 推定方法

李敏淳,金昌浩 동국대학교 농림과학연구소 1991 農林科學 論文集 Vol.15 No.-

The relationship between diameter growth at breast height and height growth of Pinus koraiensis, y=18.472-11.4341(0.7405^x), is induced and a table by which the height growth is able to be estimated by measuring only diameter growth is made. A simple method for estimating growth increment is suggested. The method makes it possible to estimate the past growth increment of a tree without discs for stem analysis.

潛在失業에 관한 理論的 考察

朱宗桓 동국대학교 농림과학연구소 1967 農林科學 論文集 Vol.1 No.-

農村近代化의 適應度 調査 硏究 : 宜寧郡 二個部落의 境遇

李秉東 동국대학교 농림과학연구소 1969 農林科學 論文集 Vol.3 No.-

1. This research is one of surveys from August 1968 to February 1969 on 14 rural villages in 5 provinces. 1) Relation between Totemism, Sharmanism and agricultural activities. 2) Rural village's traditional thoughts on operative, social and emotional coorperation. 3) Changing rural situation in class, customs, recreation and reason of leaving villages. 4) Farmer's occupational view and desire to remove to the large cities. 5) Measuring the rural modernization based upon the farmers thonghts.

韓國 農業勞動力에 關한 硏究 : 潛在失業의 問題를 中心으로 With reference to disguised unemployment

趙炳贊 동국대학교 농림과학연구소 1969 農林科學 論文集 Vol.3 No.-

54% of the total population of Korea are engaged in agriculture, and most of them have not been relieved as yet from the pre-modern farming method. Therefore, the over-population in the Korean agriculture has been a great concern in conjunction with the problem of disguised unemployment and it presents many difficult problems in the modernization of rural community. According to local research reports on this problem, most of the opinions seems to accept, without any criticism, the theory of R. Nurkse. In other words, these reports ?? that the disguised unemployment exists widely in the rural community of Korea, which is zero in the so-called marginal productivity of labor and can be eliminated from agriculture without the precondition of the development of agricultural technics and even without affecting agricultural production. However, the author does not agree with this opinion. From view of the present employment structure of farm village, it is in the stage of over-employment and the ratio of idle labor throughout the year to rural labor power is 46.1% which suggest very low consumption ratio of rural labor power. But, it is quite contradictory to mix up the very low consumption rotio of rural labor power and the existence of the labor power which is zero in the marginal productivity. This can be fully justified by the fact that even the idle labor power throughout the year has a higher percentage, there has been usually caused the labor shortage due to rapid increase in the demand of the labor power in the farming season which is closely related to the agricultural productivity in Korea. This may be attributable to the fact that the agriculture in Korea depends significantly upon seasonal factors and that the agricultural technics are not relieved from backwardness. Accordingly, in this paper the auther recognizes the fact that the rural community is relatively over=populated with over-employment of rural labor power in our country and denied the existence of the labor power which is zero in the so-called marginal productivity. Comparative study is also made on the significance of the improvement of cropping system, encouragement of side lines and the development of agricultural technics in an effort to improve structural contradiction of the rural labor power in Korea. It is indicated in the conclusion that the pressing requirement is the investments for the improvement of basic conditions of agricultural productivity including agricultural mechanization to economize labor and improvement of farm crops, thereby reforming the present structure of labor power in our country,

Lignin 反應에 依한 主要 針葉樹種의 解剖形態學的 特性에 關한 硏究

朱明七,朴敎秀 동국대학교 농림과학연구소 1990 農林科學 論文集 Vol.14 No.-

Observation was carried out to find the morphological relationship and to get the data of breeding resistance of thirty four coniferous trees in the native and introduced, and the results were summarized as follows: Fifteen species belong to the mono-vascular bundle, the other side nineteen species was the bi-vascular bundle. Species the number of resin duct from none to five were twenty eight and irregularity were six. Species could not observe the endodermis were ten. In the mutual comparison among the characteristics, there were differences on Epidermis Width/Epidermis Length, Endodermis Width/Endodermis length and Epidermis thickness/Epidermis length in the each species, smilar relationship on Endodermis Width/Epidermis Width, Xylen Length/Epidermis Width and Phloem Length/Epidermis Width in the each taxon, and a few differences on Endodermis Thickness/Epidermis Length, Xylen Length/Phloem Length and Endodermis Thickness/Epidermis Thickness.