As a result of the execution of the import liberalization and local autonomy with WTO system launching, centralized rural extension service converted to localized rural extension service. This advent of globalization and localization era affects our over all agricultural condition, moreover the duty and role of rural extension organization which take complete of rural extension, is compelled to diversified and specified technology. In this study, first we will investigate the change of agricultural, rural community, and local rural extension service in globalization and localization era. Second we will analyze the confronted problems of local rural extension service. With this study's outcome for basis, we will present new role and direction of local rural extension service which can contribute to local agricultural development.

Underwater robotic vehicles(URVs) are used for various work assignments such as pipe-lining, inspection, data collection, drill support, hydrography mapping, construction, maintenance and repairing of undersea equipment, etc. As the use of such vehicles increases the development of vehicles having greater autonomy becomes highly desirable. The vehicle control system is one of the most critic vehicle subsystems to increase autonomy of the vehicle. The vehicle dynamics is nonlinear and time-varying. Hydrodynamic coefficients are often difficult to accurately estimate. It was also observed by experiments that the effect of electrically powered thruster dynamics on the vehicle become significant at low speed or stationkeeping. The conventional linear controller with fixed gains based on the simplified vehicle dynamics, such as PID, may not be able to handle these properties and result in poor performance. Therefore, it is desirable to have a control system with the capability of learning and adapting to the changes in the vehicle dynamics and operating parameters and providing desired performance. This paper presents an adaptive and learning control system which estimates a new set of parameters defined as combinations of unknown bounded constants of system parameter matrices, rather than system parameters. The control system is described with the proof of stability and the effect of unmodeled thruster dynamics on a single thruster vehicle system is also investigated.

박용추진축계의 최적배치상태를 얻기 위해 선형계획법에 의한 최적배치 전산프로그램을 개발했으며, 여기에 필요한 자료들은 삼차모먼트정리를 매트릭스산법으로 전산처리해서 얻어냈고, 이 프로그램의 신속성을 확인하기 위해 모형축의 계산치와 스트레인 게이지에 의한 실측치를 비교하고, 실선축계에 적용한 결과 다음과 같이 요약할 수 있었다. 1. 최적배치의 필수자료인 직선지지상태의 반력 및 반력경향계수를 구하는 전산프로그램을 개발해서, 모형축에 적용한 결과, 실험치와 계산치가 거의 일치했고, 실선축에 대해 계산한 값도 타 프로그램으로 계산한 것과 거의 비슷했다. 2. 본 논문의 스트레인게이지에 의한 축계상태치의 계측방법은 실선축의 배치상태의 조정시에 매우 효과적으로 활용할 수 있을 것이다. 3. 최적배치의 전산프로그램을 실선축에 적용한 결과, 제한조건을 만족하려면, 지지베어링들을 상당량 수직방향으로 조절해야 함을 알 수 있었다. 따라서 최적배치의 관건은 배치계산에 필요한 정확한 자료와 제한조건을 구하는 것이라 할 수 있겠다.

Authors studied the propulsion efficiency of G. T. 280 to 300 class tuna longliners used in Korea. At first authors calculated the ratios and factors of the ship by use of principal dimensions. In cordance with this ratios and factors authors, examined the effective horse power, propulsion ficiency and brake horse power, and following results are obtained. (1) EHP is slightly increased according to the increasing of Froude number and speed. (2) Value of propulsion coefficient is obtained in the range of 51-54% at the cruising speed an its average is 52% in 6-13 knot of the speed. (3) EHP and BHP are increased according to the increasing of prismatic coefficient at the same speed.

Recently, urbanization has become a serious issue, as there is imbalance between regions and various environmental problems occur intensively in cities. Therefore, cities all over the world are promoting the Green New Deal and trying to realize carbon neutrality. Accordingly, the European Union is leading the creation of carbon-neutral cities by promoting policies aimed at rapidly realizing carbon neutrality. In Korea, projects such as U-City and Smart City have also been promoted continuously for many years, and recently, the projects Smart Green City and Carbon Neutral Green City have been introduced. Therefore, this study aimed to derive directions and implications for future projects based on policies to address climate change by analyzing the guidelines for the Smart Green City project and the project plans of Gimhae-si and Gangjin-gun, which are the leading projects in the Smart Green City business model and are equipped with an extensive budget.

This study aims to review the differences in urban regeneration independently implemented by the government (Ministry of Land, Infrastructure, and Transport, MOLIT) and Seoul based on related laws and ordinances, and to draw out the implications of Korean urban regeneration’s directions. The results are as follows. First, Seoul has constantly responded to the revision of the Urban Regeneration Act by adjusting and specifying the contents of ordinances, and especially, there have been efforts to enhance regional characteristics suitably for the circumstances of Seoul. Second, in the urban regeneration of Seoul, the budgets including the matching ratio of national and local subsidies shall be changed according to the standards of the MOLIT in changing designating places after the selection of the urban regeneration by the ministry, and this procedure and these implementation methods cause confusion to Seoul and local governments. Third, there were differences in the results of comparing the budgets and support methods of the “Gaggum Housing Project” of Seoul and “New Deal Housing Repair Project” of the MOLIT, which caused conflicts due to the differences in the project implementation and support standards, and the arbitrary interpretation of the guidelines. Although the urban regeneration greatly contributed to the revelation and conservation of regional characteristics, it might be necessary to establish systems that can enhance citizens’ awareness and compensate the efficient contents needed for each region in the future.

Climate change has recently become a serious global issue, and carbon emissions and energy consumption are increasing, particularly in cities where economic activities and populations are concentrated. Accordingly, various countries worldwide are promoting the Green New Deal and promoting urban-centered climate change response policies with the aim of carbon neutrality. In Korea, following the “smart green city” project that creates a city where humans and the environment coexist, a similar “carbon neutral green city” policy is set to be introduced. Therefore, in this study, implications and directions for the sustainable introduction of the carbon neutral green city policy will be derived by comparing and analyzing the State and Tribal Assistance Grants of the U.S. bipartisan infrastructure law and the smart green city of the Korean new deal.

본고의 과제는 일본 시마네현 ‘죽도문제연구회’의 『제4기 최종보고서』에서 제시된 「죽도 문제에 관한 학습」 추진 검토부회의 활동을 개관하고 각급학교의 ‘학습지도안’을 검토하는 것을 목적으로 하였다. ‘죽도문제연구회’에서는 이미 2005년 「죽도(독도)학습」 부회의 활동이 2009년부터 「죽도에 관한 학습」으로 이어졌으며, ‘제4기 죽도문제연구회’에서는 「죽도문제 에 관한 학습」으로 확장되어 학습지도요령 및 해설서의 동향을 반영하여 체계화하고 있다. 본고에서 검토된 것들은 다음과 같다. 첫째, ‘죽도문제연구회’의 활동에서 역사적 연구가 차츰 근현대 이후의 연구로 변화되고 있으며, 독도교육=「죽도문제에 관한 학습」에 대한 관심과 노력이 점차로 확대되고 있다는 것이다. 둘째, 『제2기 최종보고서』의 독도교육=「죽도에 관한 학습」은 전국적으로 영향을 미치게 됨에 따라 「죽도문제에 관한 학습」으로 확장하였고, 검토부회가 조직되어 각급 학교급별 ‘학습지도안’을 작성하고 있다는 것이다. 셋째, 「죽도문제에 관한 학습」 추진 검토부회의 ‘학습지도안’은 문부성의 개정 『학습지도요령』 및 『해설서』를 토대로 ①‘기능·지식’, ②‘사고 력·판단력·표현력’, ③‘주체적으로 학습에 임하는 태도’의 3가지 단계별 지도를 염두에 두고 그 내용에 체계성을 추구하고 있다는 것이다. 이러한 「죽도문제에 관한 학습」 추진 검토부회 의 ‘학습지도안’은 교육부의 독도교육 방향 설정은 물론 관련지자체인 경상북도교육청, 대구 광역시교육청이 주도적으로 추진해야할 독도교육에 대해 많은 시사점과 방향성을 던져주는 것이라 할 것이다. 독도교육 내용의 학교급별 체계적 구성뿐만 아니라 주입식이 아닌 스스로 생각하고 탐구하는 교과내용으로 보완될 필요가 있다.

우리나라의 국가 지진방재 정책기술은 2016년 9월 21일 발생한 규모 5.8의 9.12지진 발생 전후로 구분할 수 있으며, 9.12지진 이 발생하기 전에는 대부분 우리나라 주변의 일본, 중국, 대만 등 대규모 지진 발생 이후 관련 대책들이 발표되었다. 2016년 9.12지진 이후 지진방재 종합대책, 2017년 포항지진 이후 지진방재 개선대책이 마련되었다. 이후 지진화산재해대책법을 근거로 지진방재 종합대책 및 지진방재 개선대책, 그리고 제1차 지진방재 종합계획을 보완한 제2차 지진방재 종합계획이 발표되었으며 국립재난안전연구원에서는 지진방재 전문기관 클러스터를 운영을 통해 원활한 국가 정책기술을 지원하고자 한다.