• Journal of the Korea Society of Computer and Information
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• v.19 no.2
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• pp.91-99
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• 2014

This paper is about design and implementation of 'SeaMap' importer module which is for map-based application using 'SeaMap' data. 'SeaMap' data importer is a module that reads 'SeaMap' data in consistent form and offers using easily change the format and the internal data structure in the application. Design of data importer module is based on analyzing characteristic of 'SeaMap'. The comparative analysis between the data type of 'SeaMap' and standard S-57 Electronic Navigation Chart (ENC) of the International Hydrographic Organization (IHO), based on this, to be applicable of S-52 standards 'SeaMap' data is defined as a structure of data. The importer module is designed and converted to allow to use distribution type of 'SeaMap' data sets in map application, parsing 'SeaMap' data around the object defining transformation data structure. In addition, we implemented a 'SeaMap' data viewer in order to test our 'SeaMap' data importer module.

• Journal of the Korean Geographical Society
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• v.48 no.6
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• pp.914-928
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• 2013

Establishment of limits and names for oceans and seas is necessary for a safety of navigation. Even if there are no national and international standard for the delimitation of sea boundaries, we can take guidelines for the delimitation of sea boundaries through the analysis of IHO official publications, Limits and Names for Oceans and Sea; S-23. This paper shows the changes of the spatial limit of seas since first edition publication, and the standards for a delimitation of oceans and seas were analyzed using S-23 4th edition draft(2002) in terms of physical geographic features. The generic terms of S-23 include Ocean, Sea, Channel, Passage, Strait, Sound, Gulf, Bay and Bight, and each generic term shows hierarchical structures. Several seas show different characteristics compared with definitions of IHO dictionary. Sea boundaries are delimited by longitude and latitude, cape, river mouth, sandbar, and so on. Undersea features such as a shelf, trench, trough, rise, bank and reef are also important features for delimitation of sea boundary. Especially, seas that are delimited by undersea feature are mainly located Arctic and Southern ocean area in S-23 4th edition. Advanced knowledge of marine science with a technical advance might affect to delimit for sea boundary.

• Journal of the Korean Geographical Society
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• v.42 no.5
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• pp.745-760
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• 2007

This study aims to categorize and analyze internationally standardized sea names based on their origins. Especially noting the cases of sea names using country names and dual naming of seas, it draws some implications for complementing logics for restoring the name East Sea. Of the 110 names for 98 bodies of water listed in the book titled Limits of Oceans and Seas, the most prevalent cases are named after adjacent geographical features; followed by commemorative names after persons, directions, and characteristics of seas. These international practices of naming seas are contrary to Japan's argument for the principle of using the name of archipelago or peninsula. There are several cases of using a single name of country in naming a sea bordering more than two countries, with no serious disputes. This implies that a specific focus should be given to peculiar situation that the name East Sea contains, rather than the negative side of using single country name. In order to strengthen the logic for justifying dual naming, it is suggested, an appropriate reference should be made to the three newly adopted cases of dual names, in the respects of the history of the surrounding region and the names, people's perception, power structure of the relevant countries, and the process of the standardization of dual names. In order to endow East Sea with the meaning of the east of the Eurasian continent, westerners' perception on the Far East should be elaborated in more detail.

• Proceedings of the Korean Information Science Society Conference
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• 1999.10a
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• pp.293-295
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• 1999

다양하고 방대한 이미지 자료를 효율적으로 저장 관리하고, 또한 효과적인 이미지의 내용 검색을 수행하는 통합 시스템의 필요성이 증가하고 있다. 본 논문에서는 객체지향 멀티미디어 DBMS인 바다-IV에서 내용 기반 이미지 검색을 제공할 수 있도록 통합 DBMS 구조를 설계하고, 이미지 자료를 효율적으로 저장, 관리 및 검색할 수 있는 방법을 제시한다. 또한, 이를 이용하여 이미지의 색상 특징에 기반한 내용 검색을 수행하는 시스템을 구현한다. 구현된 바다-IV DBMS의 이미지 내용 검색은 SQL을 통한 이미지 검색을 지원하도록 내용 검색 질의어 구문을 지원하고, 그리고 이미지 검색 성능 개선을 위해 2단계 이미지 검색 알고리즘을 사용한다.

• Animal Systematics, Evolution and Diversity
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• v.12 no.4
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• pp.281-287
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• 1996

A new species of Caprellidae, Ca;rella multitberculum collected from 3 localities in the coast of the East Sea in Korea, is described and illustrated. This new species is very close to Caprella soyo Arimoto, 1934 from Japan, but is distinguished from it by having the more numerous small tubercles on body surface, the shorter flagellum of antenna 1 and the smaller appendages of abdomen. Moreover, the shape of propodus of gnathopod 2 reveals several prominent differences between the two.

• Journal of the Korean Society of Marine Environment & Safety
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• v.20 no.6
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• pp.712-720
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• 2014

In this article, legislational and economic meaning of Marine Pollution Prevention Law (MPPL) of North Korea was studied with review and comparison of North Korea's environmental legislation system. North Korea's MPPL is the basic legislation system against pollution activities. This law has the purpose of gaining of marine environmental protection and resources and declares mainly the marine environmental protection with little definition of action plan and means. To analyze economic achievements of MPPL, more macro- and microeconomic data of North Korea should be accumulated. However, environmental issues are relatively effective to discuss common goal of environmental protection and economical cooperation between Korea and North Korea. To prepare reunification, understanding of North Korea's MPPL is the first step for collaboration of marine environmental conservation.

• Proceedings of the Korea Information Processing Society Conference
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• 2002.11c
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• pp.1769-1772
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• 2002

iBASE/Cluster는 한국전자통신연구원에서 개발한 객체 지향 멀티미디어 DBMS인 바다-IV를 기반으로 공유 디스크 기반의 클러스터 환경에서 무정지 DBMS 서비스를 지원하기 위하여 확장된 DBMS 이다. 본 논문에서는 이를 위하여 수행된 바다-IV 의 확장에 대해 기술한다. 기술된 내용은 공유 디스크 자원 접근을 동기화 하기 위한 동시성 제어 기법 및 버퍼 관리 기법, 그리고 특정 노드에 고장 발생 시 회복 기법 등에 대한 확장을 포함한다. 또한 확장된 DBMS가 LVS(Linux Virtual Server) 기반의 클러스터에서 자동적인 고장의 감지 및 이전(fail-over)을 수행하기 위한 연동 구조를 다루고 동작 시나리오를 통하여 구현된 시스템의 흐름을 보인다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2005.10a
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• pp.5-10
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• 2005

T.S. HANBADA will navigate to maintain the adequate distance between own ship and other ships safely for about 17 hours on the about 2 kts. On the above situation, M broadcasting station requires to maintain the distance from 100m to 500m between ships. This paper aims to calculate the minimum safe distance between ships, the distance is assessed by using ES Model which is a quantitative model for evaluating the difficulty of shiphandling. After marine traffic flow simulation, minimum safe distance for HANBADA on the 2kts is about 260m based ES value. On this paper, the result was compared about its distance to the actual navigating distance.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2012.06a
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• pp.5-6
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• 2012

This study's leading tourist destination in Busan Haeundae, Gwangalli, APEC Naru Park, including seven regional surveys conducted by selecting a feel for the waterfront area was investigated. As a result, only 66% of Haeundae, "the sea" seem, a 77.6 percent Gwangalli a "sea looks", APEC Naru Park, 76 percent of the "sea looks", ${\cdots}{\cdots}$ (amout of) ${\cdots}{\cdots}$.