• 한국수산과학회지
• /
• 제46권5호
• /
• pp.513-519
• /
• 2013

The fishing industry in Europe has faced environmental, economic, and social challenges. Since the early 2000s, a key tool in addressing these challenges has been information and communication technology (ICT), which has helped to modernize fishery systems in European Union (EU) countries. The ICT used in EU fisheries can be categorized broadly as 1) macro-technologies such as satellite and other remote sensing technologies in combination with geographical information systems, 2) micro-technologies adapted for fishing vessels such as echo sounders, ship navigation devices, and mobile communication devices to connect fishermen and consumers, and 3) onshore micro-technologies related to internet technology and mobile devices. The European Monitoring Center on Change has used ICT to effectively manage fisheries bio-resources. This use of ICT has contributed to the development of sustainable and competent fisheries in the 2000s, even though the knowledge-sharing practices involved are contrary to the long tradition of autonomy within the fishery industry.

• 수산해양교육연구
• /
• 제26권5호
• /
• pp.1058-1074
• /
• 2014

The purpose of this study was to examine the relationship between psychological basic needs(autonomy, competence, relatedness) based on self-determination theory and career indecision of female college students. The participants of this study were 1,060 female college students in B city. To analyze data, cannonical correlation analysis was performed. The results of this study are as follows: First, the level of psychological basic needs was generally high among research participants and there were significant differences depending on the grades. Second, the level of career indecision was generally low and there were also significant differences depending on the grades. Third, the result of cannonical correlation analysis showed significant negative relationship between psychological basic needs and career indecision. Discussions and suggestions related to the results were provided.

• 수산해양교육연구
• /
• 제26권1호
• /
• pp.22-33
• /
• 2014

This study is to diagnose the present superintendent election and education standing committee system for improvement based upon Constitutional values of local education system. The findings are the followings. To improve the election system of superintendent it is recommended to maintain present election system rather than change it drastically since the present system ensure relatively more autonomy, expertise, and political neutrality of local education system. However, the qualification such as years of educational experiences of superintendent candidates need to be restored. Regarding education standing committee it suggest that all or at least 2/3 members need to be educational representatives rather than general representatives. For superintendent as well as education standing committee election, it needs to elaborate the vote ballet such as change of candidates name order by voting place to reduce its effects to election results. It also needs to strengthen public management of election such as expenses and TV forums among candidates.

• 한국항해항만학회지
• /
• 제47권2호
• /
• pp.66-74
• /
• 2023

With the increase of interest in developing Maritime Autonomous Surface Ships (MASS), an optimal ship route planning is gradually gaining popularity as one of the important subsystems for autonomy of modern marine vessels. In the present paper, an optimal ship route planning model for MASS is proposed using a nonlinear MPC approach together with a nonlinear MMG model. Results drawn from this study demonstrated that the optimization problem for the ship route was successfully solved with satisfaction of the nonlinear dynamics of the ship and all constraints for the state and manipulated variables using the nonlinear MPC approach. Given that a route generation system capable of accounting for nonlinear dynamics of the ship and equality/inequality constraints is essential for achieving fully autonomous navigation at sea, it is expected that this paper will contribute to the field of autonomous vehicles by demonstrating the performance of the proposed optimal ship route planning model.

• 한국해양공학회지
• /
• 제30권5호
• /
• pp.400-404
• /
• 2016

This paper presents experimental results for the vibration characteristics of the small unmanned underwater vehicle (UUV) OPKO 300, which was designed and manufactured by Daewoo ship and Marine Engineering Ltd. The autonomy of UUVs has led to an increase in their use in scientific, military, and commercial areas because their autonomy makes it possible for UUVs to be utilized instead of humans in hazardous missions such as mine countermeasure missions (MCM). Since it is impossible to use devices based on electromagnetic waves to gather information in an underwater environment, only sonar systems, which use sound waves, can be used in underwater environments, and their performance can strongly affect the autonomy of a UUV. Since a thruster system, which combines a motor and propeller in a single structure, is widely used as the propulsion system of a UUV and is mounted on the outside of a UUV’s stern, it can generate vibration, which can be transferred throughout the shell of the UUV from its stern to its bow. The transferred vibration can affect the performance of various sonar systems such as side-scan sonar or forward-looking sonar. Therefore, it is necessary to estimate the effect of the transferred vibration of the UUV on the sonar systems. Even if various numerical methods were used to analyze the vibration problem of a UUV, it would be hard to predict the vibration phenomena of a UUV at the initial design stage. In this work, an experimental study using OKPO 300 and an impact hammer was carried out to analyze the vibration feature of a small real UUV in the air. The frequency response function of the vibration based on the experimental results is presented.

• 한국해양공학회지
• /
• 제36권1호
• /
• pp.41-49
• /
• 2022

With the advancement of intelligent vehicles and unmanned systems, there is a growing interest in underwater surveys using autonomous marine vehicles (AMVs). This study presents an automated planning strategy for a long-term survey mission using a fleet of AMVs consisting of autonomous surface vehicles and autonomous underwater vehicles. Due to the complex nature of the mission, the actions of the vehicle must be of high-level abstraction, which means that the actions indicate not only motion of the vehicle but also symbols and semantics, such as those corresponding to deploy, charge, and survey. For automated planning, the planning domain definition language (PDDL) was employed to construct a mission planner for realizing a powerful and flexible planning system. Despite being able to handle abstract actions, such high-level planners have difficulty in efficiently optimizing numerical objectives such as obtaining the shortest route given multiple destinations. To alleviate this issue, a widely known technique in operations research was additionally employed, which limited the solution space so that the high-level planner could devise efficient plans. For a comprehensive evaluation of the proposed method, various PDDL-based planners with different parameter settings were implemented, and their performances were compared through simulation. The simulation result shows that the proposed method outperformed the baseline solutions by yielding plans that completed the missions more quickly, thereby demonstrating the efficacy of the proposed methodology.

• 한국콘텐츠학회논문지
• /
• 제8권2호
• /
• pp.140-149
• /
• 2008

지방자치시대의 도래와 함께 각 지자체에서는 중앙정부로부터의 분권, 분산을 통한 국토의 균형적 활성화를 도모하고 있다. 이러한 연장선상에서 각 지역에서는 지역적 활성화를 도모하기위한 방법으로 지역적 아이덴티티의 중요성을 인식하기 시작했고, 이러한 인식에서 지역의 자원을 이용한 브랜드가 개발되었다. 그러나 상당수의 브랜드들이 지역적 아이덴티티에 대한 분석과 전략적 차별화를 고려하지 않는 개발로 유사 브랜드가 난립하게 되는 요인을 제공하는 것 또한 현실이다. 따라서 본 연구에서는 그 지역의 특산물 브랜드개발에 있어서 고려해야할 지역적 특성과 소비자 의식 등을 여수시의 지역성을 대표하는 수산물 브랜드개발 사례를 통하여 제시하고자 한다. 지역적 특성을 브랜드개발 전략과 브랜드 아이덴티티요소에 적극적으로 적용하고, 그 지역에서 개발된 브랜드가 파워 브랜드로 포지셔닝 하기 위한 사후관리 및 홍보방안을 제시함으로서 수산물 브랜드화의 효과적 방향 설정에 기여하고자 하였다.

• 수산해양교육연구
• /
• 제24권2호
• /
• pp.234-245
• /
• 2012

This study aims to analyze the factors of the extra-curricula area in personal school performance record and propose the practical strategies for entrance examination affairs on this area. To address this goal, we have applied a SWOT analysis with related documents and research results. We found out five strengths: (S1) Link the students' experience to right people for the university, (S2) Quantitative Indicators, (S3) Qualitative Indicators, (S4) Link to other evaluation factors, and (S5) Analysis of Human Resource. The weakness included: (W1) Fairness, (W2) Reliability, (W3) Difficulties to set standards, (W4) Difficulties to set environments, and (W5) Lack of systemic experience of an evaluation. We also discovered five opportunities (O1) Recognition of public education, (O2) The need of national support, (O3) The importance of autonomy, (O4) Specialization, and (O5) Networks. Finally, threat factors consisted of: (T1) Frequent change of educational policy, (T2) Increasing of private education, (T3) Lack of information and preparation time, and (T4) The accuracy and reliability of personal school records. Based on these results, we suggested practical strategies with these four dimensions: S-O, W-O, S-T, and W-T.

• 수산해양교육연구
• /
• 제25권1호
• /
• pp.40-52
• /
• 2013

The purpose of this study is to explore improving ways of screening of self-directed learning in self-governing high schools for expanding self-initiated learning screening system. To achieve the above aim, it was used survey method to 99 admission teachers of 12 self-governing high schools and analyzed responses with SPSS program. The research findings are as follows. To expand self-initiated learning screening system in self-governing high schools, it needs to obtain admission members of entrance committee, pooling of external screening members, quick decision of school admission members, increasing payment, training and understanding of the system and consideration of admission documents and study plan. Some improving ways of the expanding of self-initiated learning screening may be listed as follows: 1) development of screening model for self-governing schools 2) policy consideration for self-governing public high school 3) expanding autonomy of school 4) supporting budget 5) sharing of operation case and reinforcement of public relations.

• 수산해양교육연구
• /
• 제22권1호
• /
• pp.25-37
• /
• 2010

This study was attempted to analyze the change process of fisheries track's high school curriculum related with the 5th-7th revised national curriculum. To accomplish this goal, the nature and goals of fisheries track's high school were reviewed. First, it was found that the fisheries track's high school was classified into three groups; high school for special goal, characterization, and industry. And the goal of fisheries track's high school was designated to harmonize the general education and vocational education in high school goal. Second, the legal basis and system of national curriculum in fisheries track's high school were discussed. The legal basis of national curriculum in fisheries track's high school was prescribed to the 'Elementary and Secondary Education Act'. The system of national curriculum was composed the general guideline and subjects. Third, the change process of fisheries track's high school national curriculum was discussed. The system of decision, general guideline, and subjects in fisheries track's high school national curriculum were seemingly to be studied on the basis of the autonomy or diversity. In conclusion, the concrete content of fisheries track's high school national curriculum was not changed compared to the 5th-7th revised curriculum.