• International Journal of Fuzzy Logic and Intelligent Systems
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• v.7 no.1
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• pp.34-40
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• 2007

Balasubramaniam and Muralisankar (2004) proved the existence and uniqueness of fuzzy solutions for the semilinear fuzzy integrodifferential equations with nonlocal initial condition. Park et al. (2006) found the sufficient condition of this system. Recently, Kwun et al. (2006) proved the existence and uniqueness of solutions for the semilinear fuzzy integrodifferential equations with nonlocal initial conditions and forcing term with memory in $E_N$. In this paper, we study the controllability for this system by using the concept of fuzzy number whose values are normal, convex, upper semicontinuous and compactly supported interval in $E_N$.

• International Journal of Fuzzy Logic and Intelligent Systems
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• v.14 no.3
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• pp.200-208
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• 2014

This paper presents the control of an inverted pendulum system using intelligent algorithms, such as fuzzy logic and neural networks, for advanced control education. The swing up balancing control of the inverted pendulum system was performed using fuzzy logic. Because the switching time from swing to standing motion is important for successful balancing, the fuzzy control method was employed to regulate the energy associated with the angular velocity required for the pendulum to be in an upright position. When the inverted pendulum arrived within a range of angles found experimentally, the control was switched from fuzzy to proportional-integral-derivative control to balance the inverted pendulum. When the pendulum was balancing, a joystick was used to command the desired position for the pendulum to follow. Experimental results demonstrated the performance of the two intelligent control methods.

• Journal of Fisheries and Marine Sciences Education
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• v.17 no.3
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• pp.281-292
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• 2005

Information on maritime boundaries is essential to manage ocean and fisheries effectively in the era of the UN Convention on the Law of the Sea. With various information regarding to maritime boundaries analysed and reviewed, maritime boundaries are mainly divided into two categories such as international and domestic boundaries and also sub-divided into two aspects such as administrative and other boundaries. After clarification of boundary information, the geographical natures of boundaries, for instance datum, projection, line types, are reviewed. The Geographic Information Systems (GIS) is used for the establishment, management and utilization of boundary information due to its strong function in database, analysis, visualization, etc.

• Journal of the Korean Society of Marine Environment & Safety
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• v.23 no.7
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• pp.847-857
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• 2017

The present situations of the education and training systems for the response to marine HNS spill incidents in domestic and foreign countries were reviewed and the plans to improve domestic system were suggested on the basis of the comparison between domestic and foreign education systems. There were almost no private education and training institutions in Korea, and they have not been activated, compared with those of foreign countries such as USA, Canada, Australia and UK. The domestic marine HNS-related education has been implemented uniformly under Korean government initiative. In addition, there were differences in the targets and duration of the education offered by Korea Coast Guard Academy (KCGA) and Marine Environment Research & Training Institute (MERTI) in Korea. Domestic HNS-related curriculum was relatively simple, compared with the curricula of foreign countries, and has not accepted two levels (operational level and manager level) required in HNS model courses of International Maritime Organization (IMO). The domestic education and training period was short relatively to those of foreign countries. The following suggestions were made to improve the education and training system for the response to domestic marine chemical incidents. In the short term, an HNS education and training management consultation body (tentative name) should be established, with both KCGA and MERTI participating jointly while maintaining the current system of the two institutions (KCGA and MERTI) simultaneously. In the more distant and long term, the HNS-related departments of KCGA and MERTI should be incorporated into a National Marine HNS Response Academy (tentative name) as unified system to enable international competitiveness.

• Journal of Korean language education
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• v.29 no.4
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• pp.255-294
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• 2018

The Buckwheat Season, evaluated as the best of Lee Hyo-seok's literature, is one of the short stories that represent Korean literature. However, vivid literary expressions such as lyrical and beautiful depictions, figurative expressions and dialects, which show the Korean beauty, rather make learners have difficulty and become a factor that fails in reading comprehension. Thus, it is necessary to revise and present the text modified for the learners' language level. The methods of revising a literary text include the revision of linguistic elements such as cryptic vocabulary or sentence structure and the revision of the composition of the text, e.g. suggestion of characters or plot, or insertion of illustration. The methods of revising the language of the text can be divided into methods of simplification and detailing. However, in the process of revising the text, many depend on the adapter's subjective perception, not revising it with objective criteria. This paper revised the text, utilizing by the Academy of Korean Studies, , and the by the National Institute of Korean Language to secure objectivity in revising the text.

• Journal of Engineering Education Research
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• v.12 no.4
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• pp.3-17
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• 2009

The purpose of this study is to develop the national generic competency standards for professional engineer and so improve the quality of Korean professional engineer into an international level. First, this study intends to develop the national generic competency standards for professional engineer that contributes to maintain and enhance the quality of professional engineers in terms of a linkage among education and training, qualification, and labor market. Second, this study aim to obtain the national generic competency standards for professional engineer that applies to reform the criteria of certification, testing, and interview of National Technical Qualification System as well as to develop the curriculum of engineering education and continuing professional development and the system of human resource management in corporations. As a result, a final draft of the national generic competency standards for professional engineer was confirmed to include 12 clusters of competency standards and 56 elements of competency standards.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.12
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• pp.5770-5775
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• 2012

For this study, we reviewed theoretical background of STEAM education and domestic and international studies in STEAM education, by doing so, we developed and applied the STEAM education program based on topic-specific project. This program is designed for the 3rd and 4th lesson of 6th graders' science in elementary school. As a result, the positive attitude about science of the students who went through the researched program increased with meaningful difference compared to that of the sample population. The result of this study shows that the STEAM education program based on topic-specific project can brings positive changes for the science-related affective domains.

• Asia-Pacific Journal of Business
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• v.13 no.3
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• pp.475-491
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• 2022

Purpose - This study analyzed the correlation and effect of FTA environmental factors (company internal environmental factors, corporate external environmental factors) between FTA utilization and performance of Shandong companies in China. Design/methodology/approach - To test the hypothesis, SPSS 24.0 statistical packages were used based on the collected data. Findings - First, it was confirmed that internal environmental factors (international marketing orientation, corporate competitiveness, and corporate awareness of FTA) of companies had a positive(+) effect on FTA utilization. Second, The government's support for FTA utilization will have a significant positive (+) effect on companies' FTA utilization.Non-tariff barriers will have a negative (-) effect on companies' use of FTA. Third, A company's FTA utilization will have a significant positive effect on FTA performance. Research implications or Originality - If Shandong companies want to increase the utilization of FTAs, they should strengthen international marketing, such as collecting information on competitors and improving product quality and price competitiveness, and increase corporate competitiveness through active export activities to the global market.In order to increase the awareness of FTA among enterprises in Shandong Province, the government should strengthen the relevant education of enterprises about FTA.

• Journal of Environmental Science International
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• v.31 no.10
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• pp.815-824
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• 2022

It is necessary to understand the amount of snowfall and area of snow cover of Mt. Halla to ensure the safety of mountaineers and to protect the ecosystem of Mt. Halla against climate change. However, there are not enough related studies and observation posts for monitoring snow load. Therefore, to supplement the insufficient data, this study proposes an analysis of snow load and snow cover using normalized-difference snow index. Using the images obtained from the Sentinel2 satellite, the normalized-difference snow index image of Mt. Halla could be acquired. This was examined together with the meteorological data obtained from the existing observatory to analyze the change in snow cover for the years 2020 and 2021. The normalized-difference snow index images showed a smaller snow pixel number in 2021 than that in 2020. This study concluded that 2021 may have been warmer than 2020. In the future, it will be necessary to continuously monitor the amount of snow and the snow-covered area of Mt. Halla using the normalized-difference snow index image analysis method.

• Asia-Pacific Journal of Business
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• v.14 no.1
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• pp.439-451
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• 2023

Purpose - Market structure is crucial to identify as it defines the market states for new and existing container ports to perform within a given region. the study aims to compare the major ports in the Bay of Bengal in the context of Chittagong Port. Design/methodology/approach - For this study, the past 9 years of container volume data have been collected and analyzed through the HHI index, BCG matrix and shift effect analysis. Based on the analysis, this study has found that the Chittagong Port is in an oligopoly competitive market structure. Findings - The findings have shown that port in low market share and low growth in very recent years with the moderately concentrated ports HHI index. The shift effect analysis shows that the container volumes shifted from one port to another in the 2019 and 2020 periods. This study is the pioneer study in the Bay of Bengal region to identify the market structure, analyze market share and growth, and analyze the market concentration. Research implications or Originality - Future recommendations for the port authority is to take advantage of geolocation; attract international; tax exemption, faster clearance process, reduced waiting charges; increasing storage and technological machinery; promoting maritime logistics education; promoting Chittagong tourism; collaboration with other countries. Also, this study can be used as basic data for the establishment of a new supply chain between Korea and Southwest Asia for the Korean government and companies.