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지용근,이진희,김상단,Jee, Yong-Keun,Lee, Jin-Hee,Kim, Sang-Dan 한국농공학회 2012 한국농공학회논문집 Vol.54 No.3
For the systemic management and planning of future agricultural water resources, deriving and analyzing the various results of climate change are necessary to respond the uncertainties of climate change. This study assessed the impact of climate change on the rainfall, temperature, and agricultural water requirement targeting in the Nakdong-river's basin periodically according to socioeconomic driving factors under the scenarios A1B, A2 and B1 of the Special Report on Emission Scenarios (SRES) through the various IPCC GCMs. As a result of future rainfall change (2011~2100), increasing or decreasing tendency of rainfall change for future periods did not show a clear trend for three rainfall observatories, Daegu, Busan and Gumi. The characteristics of the temperature change consistently show a tendency to increase, and in the case of Daegu observatory, high temperature growth was shown. Especially, it was increased by 93.3 % in the period of future3 (2071~2100) for A2 scenario. According to the scenario and periodic analyses on the agricultural water demand, which was thought to be dependent on rainfall and temperature, the agricultural water demand increased at almost every period except during the Period Future1 (2011~2040) with different increase sizes, and the scenario-specific results were shown to be similar. As for areas, the agricultural water demand showed more changes in the sub-basin located by the branch of Nakdong-river than at the mainstream of the River.
농업용수관리자동화시스템의 용수절감효과에 대한 경제적 가치 평가
지용근,김선주,김필식,Jee, Yong-Keun,Kim, Sun-Joo,Kim, Phil-Shik 한국농공학회 2009 한국농공학회논문집 Vol.51 No.4
This study analyzed and evaluated the effect of agricultural water reduction by introducing automated agricultural water management using alternative cost approach. The approach is possible to evaluate none market property as an asset. The saved agricultural water was evaluated as none market property. As the alternative goods, Seongju and Donghwa dam, typical irrigation dams in domestic, were employed. The economic benefit from water saving effect of an automated agricultural water management was calculated as depreciation expense and maintaining cost of construction agricultural dam per saved agriculture water. As a result, the saved agriculture water was 8.5 million ton per year, and the economic benefit of it was $1.3{\sim}2.1$ million won.
지용근,김선주,김필식,Jee, Yong-Keun,Kim, Sun-Joo,Kim, Phil-Shik 한국농공학회 2009 한국농공학회논문집 Vol.51 No.1
A number of fallow paddies field continues to increase because of adverse agricultural circumstance such as upsurge income of foreign products, increase of labor costs in local community, imbalance between productivity and profitability etc. Such fallow paddies are necessary to be protected against weeds and trees. If fallow paddies are not managed, it will be devastated and needed cost for re-cultivation. Therefore, management of gradually increased fallow paddy fields should be conducted. In this study, the effect of plants growth inhibition and water quality purification through the control of flood in fallow paddy were examined in an experimental field. The managed and unmanaged fallow paddies through the control of water depth were constructed in the experimental field. The monitoring was conducted from 2005 to 2007. As the result, the managed fallow paddies were more effective than the unmanaged ones on the growth inhibition and water purification. In addition, when the fallow paddy is managed with regular water depth, it was the most effective in the plants growth inhibition.
부모의 양육태도가 초등학생의 진로태도성숙에 미치는 영향
지용근 한국진로교육학회 2004 진로교육연구 Vol.17 No.1
The purpose of this study is to identify the effects of parents' child-rearing attitude on career attitude maturity of male and female elementary school students. From the results of this study were drawn conclusions as follows. First, no difference was found in career attitude maturity according to gender, but in the dimensions of goal-orientation and preparation, female students got significantly higher scores than male ones. Second, the parents' affectionateautonomousachievement-orientedrational rearing attitude led to significantly higher scores in the maturing of children's career attitude than their antagonisticregulatoryunfulfillingirrational rearing attitude. Third, the fathers' achievement-orientedrational child-rearing attitude influenced the maturing of male students' career attitude, and the mothers' rational rearing attitude and the fathers' achievement-oriented rearing attitude influenced the maturing of female students' career attitude.Fourth, the fathers' achievement-oriented rearing attitude influenced male students' career attitude of preparation, decisiveness and independence. The fathers' affectionate rearing attitude influenced their confidence and the fathers' rational rearing attitude their goal-orientation. However, the mothers' rearing attitude appeared not to influence the sub-factors(preparation, decisiveness, confidence and independence) of male students' career attitude except goal-orientation.Fifth, the fathers' achievement-oriented rearing attitude influenced female students' career attitude of preparation, decisiveness and confidence, and the mothers' rational rearing attitude their goal-orientation. However, the parents' rearing attitude did not influence female students' independence.