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최낙경;강병윤;조효제
- Journal of Ocean Engineering and Technology
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- v.16 no.6
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- pp.71-75
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- 2002
In this paper, a study on the principal performance of the purse seiner ship in two vessel formations was conducted. For this task, the outline of the purse seiner fishing system in two vessel formations was reviewed. At the same time, based on the general arrangement plan, hull from of the main vessel was developed. And the stability and ship motion characteristics of the ship design were estimated. Finally, to verify the characteristics of the resistance and self-propulsion coefficient, a model test in a circulating water channel was performed. As n result, it is anticipated that this presentation will be used as the foundation material for research of purse seiner.
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최낙경;강병윤;조효제
- Journal of Ocean Engineering and Technology
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- v.16 no.6
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- pp.76-81
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- 2002
The purpose of this study is to set up the optimum economical formation of the purse seiner fishing system. For this task, the characteristics of existing purse-seiner fishing system were reviewed, and the possible formations of the fleet in tile purse-seiner fishing system were examined through the reallocation of function for each individual vessel. In addition, economic evaluations of the possible formations of the fleet are carried out. Consequently, it was found that 2-vessel formations have the most economic efficiency. Then, a conceptual system design for the main vessel in the 2-vessel formations was performed. As a result, this paper can be used as a helpful guideline to develop the most profitable and economical fishing system in the fleet type fishery.
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Koh, Seok-Bong;Lee, Won-Hyung;Park, Jung-Kwon;Kang, Wang-Kyu;Lee, Bong-Young
- 한국정보통신설비학회:학술대회논문집
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- 2008.08a
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- pp.516-520
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- 2008
최근 국내에서는 가입자 댁내까지 광케이블망이 인입되는 FTTH구축이 일반화 되고 있으며, 초고속 인터넷 서비스를 기반으로 통방융합 서비스중의 하나인 IPTV 서비스도 다양한 컨텐츠의 확보로 점차 가입자 수요가 증가되고 있다. 또한 VoIP도 통신사업자를 중심으로 일반전화 시장을 점진적으로 잠식하고 있는 추세이고, 향후 수년 내에 걸쳐 모든 가입자 댁내까지 광케이블망 구축이 완료되어 All IP화가 이루어질 전망이다. 2007년부터 전국적으로 일반주택 및 다세대주택을 대상으로 FTTH구축이 진행되고 있으며, 광간선망에서 분리되어 광배선망 분기지점에 설치되는 광접속합체 및 전주 광분기함에 설치되는 스플리터에 대한 다양한 망구성 방법 등 현재 적용되고 있는 다양한 FTTH 구축방법에 대해서 논하였다. FTTH 가입자 개통 방법에 있어서도 광옥외선을 이용하여 가입자 댁내까지 인입되는 방법 및 현장에서 직접 커백터 조립이 가능한 현장조립형 광커백터에 대한 품질확인 방법에 대해 설명 하고자 한다.
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