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이탈리안 라이그라스 답리작 재배의 경제성 및 도입요인 분석
최현호 ( Hyunho Choi ),윤진우 ( Jinwoo Yun ),채용우 ( Yongwoo Chae ),박재형 ( Jeahyoung Park ) 한국농업정책학회 2018 농업경영정책연구 Vol.45 No.4
The purpose of this study is making suggestions for wider dissemination of IRG cultivation technologies as well as providing implications, analyzed the economic effects on the Italian ryegrass (IRG) in Central area and the effects of technology adoption for non-IRG farmers. The results showed that the incomes of “broadcasting under standing crop” and “strip seeding” groups differ significantly with a standard deviation of ±97,476 Korean won; and the latter’s income was higher than the former’s, 20.9% and 7%, respectively. Yet, the average farm income without governmental support is only 23,239 Korean won per 10a. Funding for long-term support and technical training need to be continuously provided in order to put in practice IRG sowing and farming technologies suitable for Central area, and thus to widely disseminate IRG. In addition, the spread of new knowledge and continuous implementation of educational and promotional activities are essential to enhance technological innovation and utility that influence adoption of technology by farmers. Also, for wider adoption of the new technology, it is necessary to establish a plan to improve its reliability by proving effects and removing the risks of the new technology.
최현호 ( Choi Hyunho ),윤정현 ( Yun Junghyun ),김문옥 ( Kim Moon Ok ) 한국구조물진단유지관리공학회 2020 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.24 No.1
In this study, correlation analysis between Atmosphere temperature and effective temperature for Bridge Design Standards is performed using regression curve. Based on this analysis considering recent domestic climate change, appropriate effective temperature range is suggested for design standards to determining the design of bridge expansion joint. From this, it is concluded that more widen effective temperature range is needed for design standards.
최현호 ( Choi Hyunho ),김인배 ( Kim In-bae ),김문옥 ( Kim Moon Ok ) 한국구조물진단유지관리공학회 2020 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.24 No.1
In this study, expansion joint gap data (12,825) of 4,821 bridges are empirically analyzed for identifying influencing factors. From this, it is investigated that joint gap has a much differences depends on bridge types such as steel and con’c and temperature as well known as main influencing factors. However, some factors can be ignored. It is concluded that more detail analysis considering influencing factors is needed to modify design and maintenance standards for expansion joint.