• Journal of Korea Water Resources Association
• /
• v.45 no.5
• /
• pp.465-472
• /
• 2012

Recently, as the development of water front and natural type river is gradually increasing, it is mostly the case in that the flow analysis is implemented by only the flood level of the starting point without the tidal effect when the flood water level of the starting point is highly estimated than the high tidal water level in the design of river adjacent to an estuary. This research has analyzed the variation of tidal current for Oncheon river in Busan using Delft-3D program, considering that the tidal effect can cause the change of the flood water level of the starting point although the flood water level is higher than the flood tide level. As a result, considering the tidal effect at downstream boundary condition, water level indicates a periodicity of tide in particular region and the fluctuation range of water level is extended to upstream.

• Korean Journal of Ichthyology
• /
• v.12 no.4
• /
• pp.244-249
• /
• 2000

This study was conducted to obtain data for identification of species among elvers of anguillids, Anguilla japonica and A. anguilla and A. rostrata implanted in Korea for culture. The longer predorsal length and the fewer number of vertebrae distinguished elvers of A. rostracta from those of A. anguilla and A. japonica. A. japonica and A. anguilla were well discriminated each other in the statistical value of preanal length which the former showed shorter distance. It was remarked phylogenetically that the morphological changes according to growth in head and predorsal length of A. rostrata was different from other two species. So the elvers of A. japonica, A. anguilla and A. rostrata culturing in Korea can be distinguished by the vertebral counts, predorsal and preanal length.

• 프린팅코리아
• /
• v.12 no.2
• /
• pp.120-123
• /
• 2013

2010년 말을 기점으로 일본으로부터 GDP 세계 2위 국가의 지위를 물려받은 중국의 성장세가 눈부시다. 현재 2008년 미국에서 시작된 글로벌 금융위기와 EU의 재정위기의 영향으로 예전과 같은 고도성장을 기록하지는 못하지만, 중국이 초강대국인 미국을 추격할 유일한 후보라는 인식에는 이론의 여지가 없다. 국가경제의 팽창과 함께 중국 인쇄산업의 성장세도 괄목할 만하다. '글로벌 톱2'의 지위를 획득해 나가고 있는 중국 인쇄산업의 동향을 지난 1월 8일 중국 베이징에서 개최된 '차이나프린트2013 미디어위크'에서 발표된 리포트를 중심으로 알아본다. 행사에서 발표된 중국 인쇄산업의 동향은 2011년을 기점으로 정리한 중국 인쇄산업의 특징과 부문별 현황, 2012년 잠정 결산 및 미래 전망 등을 전반적으로 포괄하고 있다.

• Transactions of the Korean Society of Mechanical Engineers
• /
• v.8 no.4
• /
• pp.289-297
• /
• 1984

본 연구에서는 이상과 같은 점을 고려하고 흠함이 존재하기 쉬운 용접부 표면 에 인공적으로 1/4원형에 해당하는 표면피로크랙을 시험편 모서리에 넣고 이러한 시험 편에 굽힘응력을 가하여 다음과 같은 사항들을 고찰하였다. 피로크랙의 표면 및 측 면에서의 전파과정, 피로크랙의 모양비(b/a)의 변화, 피로크랙의 표면 및 측면의 전파 속도와 크랙길이와의 관계등을 알아보았다. 여기에서 크랙의 표면길이란 흠함이 시 험편 모서리에 존재할 때 그것을 기점으로 표면에 전파하는 크랙의 길이를 말하며, 크 랙의 측면길이란 그것을 기점으로 측면의 표면에 전파하는 크랙의 길이를 말한다.

• Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
• /
• 2003.04a
• /
• pp.75-79
• /
• 2003

Nowadays, the value of the ocean is growing noticeably throughout the world in accordance with the development of the industrial society and increase in the number of the ocean related economic activities. Therefore the pursuit of more waters has led more disputes amongst many maritime powers in the world. In this study, the territorial basepoints are recalculated methods to develop their accuracies to settle a boundary issue among nations.

• Radioisotope journal
• /
• v.20 no.3
• /
• pp.10-13
• /
• 2005

• 식품문화 한맛한얼
• /
• v.3 no.3
• /
• pp.324-331
• /
• 2010

• Monthly Korean Chicken
• /
• v.3 no.9 s.27
• /
• pp.1-1
• /
• 1997

• Journal of Korean Society for Geospatial Information Science
• /
• v.10 no.3 s.21
• /
• pp.53-59
• /
• 2002

Territorial sea baseline is a borderline, with the effectuation of the United Nations Convention on the Law of the Sea of 1982, for the related sea zone negotiations with neighboring countries. Its position must be determined to international standard like WGS84 coordinate system. In this study, GPS survey for territorial sea points was performed to determine territorial baseline around five islands in the yellow sea, and the results of them were compared with previous coordinates. Territorial sea point, outermost spot of a nation's realm, tend to be placed in end up low-tide elevations or precipice. Therefore traditional surveying methods are hard to take accurate observations, so that GPS survey is most effective. Through the study, the scientific and reasonable methods for GPS surveying procedure is presented. The results of coordinate comparison show that there are wide difference between the old and new coordinates, and it is necessary for the whole area of islands to calculate displacements by GPS surveying.

• Water for future
• /
• v.46 no.1
• /
• pp.91-97
• /
• 2013