• Proceedings of the Korean Society of Marine Engineers Conference
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• 2005.11a
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• pp.238-239
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• 2005

This study has performed to investigate the Buddhist remains at Korea Particularly, the Nirvana and Sarira Pagoda at Tongdo temple, Sangwoun temple, Jungam temple, Bubheung temple and Bongjongam are handled by using on the observation, references and interviews with some experts in Buddhist culture. The results in Korea are compared with that of Thailand and China. But, The Nirvana and the Sarira Pagoda to keep Buddha's relic are quite different at each temple in Korea, Thailand and China.

• Journal of Advanced Marine Engineering and Technology
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• v.30 no.5
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• pp.608-622
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• 2006

This study has performed to investigate the Buddhist remains in Korea Particularly, the Nirvana and Sarira Pagoda at Tongdo temple, Sangwoun temple, Jungam temple, Bubheung temple and Bongjongam are handled by using on the observation, references and interviews with some experts in Buddhist culture. The results in Korea are compared with that of Thailand and China. But, The Nirvana and the Sarira Pagoda to keep Buddha's relic are quite different at each temple in Korea, Thailand and China. The air velocities were calculated in side of the Nirvana by using STAR-CD.

• Proceedings of the Korean Society of Marine Engineers Conference
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• 2005.06a
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• pp.401-405
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• 2005

This paper proposed a miniaturization passive element employing the multiple microstrip line. As a result of this method, we realized the transmission line miniaturized. The applying structure designed and evaluated a power divider on GaAS MMIC circuit. It draws a plan in a center Frequency as the observation could do good characteristic.

• Journal of the Korean Society of Marine Environment & Safety
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• v.3 no.1
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• pp.93-98
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• 1997

When navigating at sea, informations like other ship's particular are very important to navigator who should make a safe maneuvering. Most of all is obtained through the optical observation and/or the radiotelephone communication, but it is not easy to perceive them when the visibility is restricted or there is some hardness in communication. In this study, we suggest the algorithm that measures the ship's length and speed on the radar screen and estimates the ship's particular such as gross tonnage, breath and type on the base of above two factors.

• Proceedings of KOSOMES biannual meeting
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• 2017.11a
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• pp.249-249
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• 2017

• Animal Systematics, Evolution and Diversity
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• v.37 no.4
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• pp.280-286
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• 2021

During a field survey on Korean coastal marine waters, two ciliates belonging to the genera Pseudovorticella Foissner & Schiffmann, 1975 and Frontonia Ehrenberg, 1838 in the class Oligohymenophorea de Puytorac et al., 1974, were collected. Even though the two genera are very common in the aquatic ecosystems, they had been superficially studied in Korean habitats. Using the observation of living cells and specimens impregnated by protargol, silver carbonate, and silver nitrate, two newly recorded ciliate are identified as P. paramarina Sun, Ji, Warren & Song, 2009 and F. ocularis Bullington, 1939. A brief diagnosis, remark, and comprehensive micrographs are provided for each species.

• Journal of the Korean Society for Marine Environment & Energy
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• v.15 no.4
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• pp.357-362
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• 2012

Despite the Wave observations data is very important information to human life at sea, the technology development and research for wave equipments are lacking. In this study, the wave observation system using GPS was evaluated the quality of wave observation data by comparing of long-term observations. The result of the comparison of the acceleration sensor (Hippy-40) and GPS sensor (Mose-1000), the correlation coefficient of the significant wave height and significant wave periods is 0.997 and 0.990 respectively. Also in case of BIAS, the significant wave height is 0.014 m, the significant wave period is -0.212 sec. It makes no significant differences whether the acceleration sensor (Hippy-40) and GPS sensor (Mose-1000). These results of the wave observation data using GPS quality will be evaluated as very good.

• Journal of Fisheries and Marine Sciences Education
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• v.20 no.3
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• pp.343-357
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• 2008

Generally, schooling is implemented by instruction in the classroom. And instruction is made progress by concrete interaction through teacher's question and students' answer or presentation. According to a lot of researches on teacher-student interaction, student's opportunity of class presentation is influenced by students' self-esteem, learning attitude, academic achievement, and relationships. And students' opportunity of class presentation is very important not only students but also social equality and democracy. Therefore, teachers have to recognize the importance of students' opportunity of class presentation. However, according to many referential researches, students' opportunity of class presentation is differentiated by students' academic ability and social-economic status. The purpose of this study was to ascertain whether students' opportunity of class presentation was differentiated by students' academic ability and social-economic status or not. The method of this study was used checklist, interview, and class observation for a month. This study indicates that in spite of some exceptional cases, many students were taken the opportunity of class presentation differently by his/her academic ability and social-economic status. And teacher does not recognize that whether she gives student's opportunity of class presentation differently or not. To be a good teacher, teacher should reflect that teaching students is not easy, and teaching students is very important. And teacher should recognize that her speaking, action, and interaction with students including students' opportunity of class presentation influences students' self-esteem, learning attitude, academic achievement, and relationships.

• 한국지구물리탐사학회:학술대회논문집
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• 2008.10a
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• pp.79-84
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• 2008

Compared to conventional high resolution acoustic profiling, ultra high resolution shallow acoustic profiling is limited in penetration, yet it provides resolution suitable for detailed seabed investigation in the shallow waters. Possible applications include search of buried pipeline, ship wrecks, and other artificial objects through the detailed mapping of thickness and structure of the upper sedimentary layers. In this study, contaminated sediments were discriminated by the correlation of ultra high resolution profiles with geologic data. In addition, the burial depth of submarine cable was measured by the interpretation of acoustic anomalies in the profiles.

• Journal of the Korean Society of Marine Environment & Safety
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• v.29 no.2
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• pp.188-196
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• 2023

Among marine accidents caused by bad weather, visibility restrictions caused by sea fog occurrence cause accidents such as ship strand and ship bottom damage, and at the same time involve casualties caused by accidents, which continue to occur every year. In addition, low visibility at sea is emerging as a social problem such as causing considerable inconvenience to islanders in using transportation as passenger ships are collectively delayed and controlled even if there are local differences between regions. Moreover, such measures are becoming more problematic as they cannot objectively quantify them due to regional deviations or different criteria for judging observations from person to person. Currently, the VTS of each port controls the operation of the ship if the visibility distance is less than 1km, and in this case, there is a limit to the evaluation of objective data collection to the extent that the visibility of sea fog depends on the visibility meter or visual observation. The government is building a marine weather signal sign and sea fog observation networks for sea fog detection and prediction as part of solving these obstacles to marine traffic safety, but the system for observing locally occurring sea fog is in a very insufficient practical situation. Accordingly, this paper examines domestic and foreign policy trends to solve social problems caused by low visibility at sea and provides basic data on the need for government support to ensure maritime traffic safety due to sea fog by factually investigating and analyzing social problems. Also, this aims to establish a more stable maritime traffic operation system by blocking marine safety risks that may ultimately arise from sea fog in advance.