• 제목/요약/키워드: Area caught

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한국산 납작금눈돔과 어류 1 미기록종, Aulotrachichthys prosthemius (First Record of the Trachichthyid Fish, Aulotrachichthys prosthemius (Beryciformes: Trachichthyidae) from Korea)

  • 김맹진;이동우;최광호;오택윤;최정화
    • 한국어류학회지
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    • 제24권2호
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    • pp.143-146
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    • 2012
  • 납작금눈돔과에 속하는 Aulotrachichthys prosthemius 1개체(표준 체장 74.8 mm)가 제주도 주변 해역에서 처음으로 채집되었다. 이 종은 등지느러미 기조수 V, 13, 뒷지느러미 기조수 III, 9, 아가미 뚜껑 위쪽에 날카로운 가시를 갖고 있으며 배쪽 줄은 뒷지느러미 끝을 도달하는 점에서 A. prosthemius로 확인되었다. 이 미기록종의 속명과 국명은 "은줄금눈돔속", "은줄금눈돔"으로 각각 제안하였다.

구조적 또는 정보공학 소프트웨어 개발 방법론 개선 절차 (The Procedure for Improving Structural Methodology or Information engineering Methodology)

  • 정병권;윤석민
    • 정보처리학회논문지D
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    • 제9D권6호
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    • pp.1083-1090
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    • 2002
  • 소프트웨어개발방법론은 급변하는 정보기술변화에 따라가지 못한다. 대부분의 소프트웨어 개발 프로젝트는 구조적 또는 정보공학 방법론을 사용한다. 기존 소프트웨어 개발 방법론이 프로젝트에 적용할 기술이 반영이 안되어 있다면, 프로젝트는 비효율적으로 수행되어진다. 본 논문은 새로운 정보기술을 기존의 구조적 또는 정보공학 방법론에 용이하게 반영하여 개선하는 모델을 제안한다. 본 모델은 소프트웨어 생명주기를 단계들로 나누고 각 단계는 관점 영역으로 나누어 분할된 작은 영역에 새로 적용할 정보기술을 반영하는 분할과 정복 기법을 활용한다. 적용사례는 설계단계를 중심으로 KCC 정보통신(주)에서 사용한 클라이언트 서버 방법론 CS@RoadMap에 웹 기반 소프트웨어 개발절차를 반영하였다. CS@RoadMap방법론에 웹 기술을 반영한 Web@RoadMap방법론을 공공 프로젝트에 적용하였다.

BONE RESPONSE OF THREE DIFFERENT SURFACE IMPLANTS: HISTOMORPHOMETRIC AND RESONANCE FREQUENCY ANALYSIS IN DOGS

  • Song Woo-Seok;Kim Yung-Soo;Kim Chang-Whe;Jang Kyung-Soo;Lim Young-Jun
    • 대한치과보철학회지
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    • 제42권6호
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    • pp.671-678
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    • 2004
  • Statement of problem. Reducing treatment time in implant dentistry is a matter of main concern. There are so many factors affecting the success rate of immediate or early loaded implant for the initial bone response. The especially microscopic properties of implant surfaces playa major role in the osseous healing of dental implant. Purpose. The aims of this study were to perform a histologic and histomorphometric comparison of the healing characteristics anodically roughened surface, HA coated surface and RBM surface implant, and to compare of ISQ values measured by $Osstell^{TM}$ for resonance frequency analysis in dogs mandible during 2 weeks. Material and method. Bone blocks from 2 dogs were caught after covered healing for 0 day(2 h); Group I, 1 week; Group II and 2 weeks; Group III. One longitudinal section was obtained for each implant and stained with hematoxylin and eosin. Histomorphometric analysis was done with Kappa Imagebase system to calculate bone-to-implant contact and bone volumes inside the threads. ISQ values were measured in every time of surgery schedule. Conclusion. The experiment revealed that: 1. The percentages of bone-to-implant contact on the fixture in each group were not significantly different(P > 0.05). 2. The percentages of bone area inside the threads on the fixture in each group were not significantly different(P > 0.05). 3. The ISQ level showed clinical stability of each fixture during 2 weeks(all ISQ level ${\geq}71$ ).

중서부태평양 한국 다랑어 선망어업의 조업 특성 (Characteristics of the Korean tuna purse seine fishery in the Western and Central Pacific Ocean)

  • 문대연;양원석;김순송;고정락;김은정
    • 수산해양기술연구
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    • 제41권4호
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    • pp.263-270
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    • 2005
  • This paper summarizes characteristics of the Korean tuna purse seine fishery in the Western and Central Pacific Ocean (WCPO). Major fishing area for the Korean tuna purse seine fleet consisted of the waters of Micronesia, Papua New Guinea and Solomon Islands and adjacent high seas between $130^{\circ}E-180^{\circ}$ The center of the Korean tuna fishing ground was in the vicinity of $180^{\circ}$ during the El - $Ni{\tilde{n}}$o event but was formed in $150^{\circ}-160^{\circ}$E during the La - $Ni{\tilde{n}}o$ event. As compared with other major purse seine fleets in WCPO, the Korean fleet set more on unassociated schools of tuna, while Japan, USA and Chinese - Taipei fleets accounted for more than 50% of sets on log - associated schools. In general, CPUES for log - associated schools were higher than those for unassociated schools and catch composition showed that yellowfin ratio was higher in unassociated shools than log - associated schools. Length frequency represented higher percentage of mid - sized yellowfin than Japanese and USA fleets. Daily set numbers and CPUE were high before 7 am and remained almost constant from 7 am to 3 pm but decreased rapidly after 3 pm and 5 pm, respectively. Catch composition per set indicated that pure skipjack school was caught most frequently, followed by mixed school and pure yellowfin school as the least, but CPUE was highest for the mixed school.

한국의 장흡충에 관한 연구 XX. Echinochasmus japonicus의 인체간염 4예 (Studies on Intestinal Trematodes in Korea XX. Four Cases of Natural Human Infection by Echinochasmus japonicus)

  • 서병설;이순상
    • Parasites, Hosts and Diseases
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    • 제23권2호
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    • pp.214-220
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    • 1985
  • 극구흡충류(echinostomes)의 하나인 Echinochassnus iaponicus 성충이 1984년 4월 인체로부터 회수되어 이 홉충에 의한 자연 인체감염이 처음으로 증명되었다. 환자는 요꼬가와흡충 유행지로 알려진 절남 탐진강 유역 강진군에 거주하는 33~55세 남자 3명과 62세 여자 1명, 도합 4명으로 이들을 10mg/kg praziquantel로 치료하고 하제를 사용한 후 설사변에 배출된 모든 흡충 및 조충을 수집하였다. 충체 수집결과 많은 수의 요꼬가와흡충이 배출된 것이 확인되었으나 이들과 함께 1~4 종류의 다른 흡충 또는 조충이 발견되었고 특히 E. japonicus 1~43마리 (총 54마리)가 검출되었다. 환자들은 이들 장내 윤충류의 복합감염으로 소화불량, 복부불쾌감 등 위장관 증상을 호소하였고 강 유역에서 각종 잉어숴 어류나 은어를 잡아 생식해온 경력이 있었다. 이들 극구흠충은 길이 0.66~0.99mm이었고, 두관 주위의 두극이 총 담개로 구흡반 배측에시 연결이 끊어져 있었고, 자궁내 충란수가 2개 이내인 점, 충란의 크기가 $76~87{\mu\textrm{m}}$(길이)인 점 등으로 Echinochasmus iaponicus Tanabe, 1926으로 동정되었다.

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부산항 부근 해역의 해저폐기물 분포에 관한 연구 (Distribution and Composition of Marine Debris on the Sea Bed around the Busan Port)

  • 김민석;이종문;김종화;강일권
    • 수산해양교육연구
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    • 제18권3호
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    • pp.236-243
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    • 2006
  • A series of surveys are performed to evaluate the abundance, composition and distribution of marine debris on the sea bed around the Busan port. In order to set up a master plan for the marine environmental pollution the relevant maritime authority must understand how many and w㏊t kinds of marine litters are distributed on the sea bed. At first we planed to survey areas divided regularly according to the coast line but there were many sea going vessels and fishing boats. So we selected and surveyed the around area where there were no sea going vessels or fishing boats.The obtained results are as follows: 1. The mean values of litters in number and weight are 5.8 pieces/㏊. and 3.5㎏/㏊. respectively. 2. The highest density in terms of number are vinyl and plastic item, and in weight are fishing gear and ship articles. 3. The nearer to the shore we surveyed the more we collected in terms of the density of marine litters in number and in weight per hectare. 4. Eel pot, oiled waste, rope, others, other pot and net of fishing gear litters in number were 59.9, 22.7, 7.9, 4.5, 3.1 and 1.9% respectively. 5. There is no relationship between the amount of fish caught and the amount of marine debris.

두개골 영상합성에 의한 개인감정시스템 연구-II (A Study on the Individual Recognition with Skull Image Composition)

  • 송현교;이양원;강민구
    • 한국정보통신학회논문지
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    • 제2권1호
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    • pp.3-10
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    • 1998
  • 슈퍼임포즈는 개인식별 방법으로 신원 미상의 두개골의 발견 시, 두개골의 사진과 용의자 생전 사진의 동일 비율로 확대, 축소 후 두 영상을 중첩하므로서 동일인 여부를 비교, 판별하는 기법으로 삼풍백화점 붕괴사고와 Quam KAL기 추락사고와 같이 대형사건에서의 개인식별은 매우 중요한 문제이다 기존의 방법은 렌즈와 거울 및 사진기술에 의존하는 수작업으로 2주정도의 시간이 소요되는 반면 본 연구의 결과로 컴퓨터 영상처리 기술과 주변기기의 활용을 이용하여 슈퍼임포즈 영상의 실시간 처리와 보다 다양하고 자세한 영상처리 정보에 의한 상세한 슈퍼임포즈 영상정보를 얻을 수 있다. 본 연구는 비디오 카메라로 입력한 두개골 영상과 스캐너로 입력한 생전 사진의 중첩을 위한 영상시스템의 구축과 영상처리 기법을 응용한 다양한 응용 프로그램을 개발하였다. 슈퍼임포즈의 영상처리 기법으로는 두개골 및 생전 사진의 윤곽선 추출, 중첩점 조정, 상,하,좌,우 각도조정, 윤곽선보정, Hue 조정, 히스토그램 조정 등 다양한 영상처리 기법을 응용하고, 보다 자세한 감정문 형식을 도입하였다. 또한, 본 슈퍼임포즈 영상시스템은 국립과학수사연구소의 슈퍼임포즈 영상자료의 처리기술 및 축적 기술의 발전으로, 두개골 영상과 생전 사진을 이용한 생전의 3차원 영상의 복원 연구도 가능하리라 사려된다.

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Arthrostoma miyazakiense (Nematoda: Ancylostomatidae) infection in raccoon dogs of Korea and experimental transmission to dogs

  • Shin, Sung-Shik;Cha, Dae-Jung;Cho, Kyoung-Oh;Cho, Ho-Sung;Choi, Jeong-Ok;Cho, Shin-Hyeong
    • Parasites, Hosts and Diseases
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    • 제45권2호
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    • pp.121-128
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    • 2007
  • Arthrostoma miyazakiense (Nematoda: Ancylostomatidae) is a hookworm species reported from the small intestines of raccoon dogs (Nyctereutes procyonoides) in Japan. Five Korean raccoon dogs (N. procyonoides koreensis) caught from 2002 to 2005 in Jeollanam-do (Province), a southeastern area of South Korea, contained helminth eggs belonging to 4 genera (roundworm, hookworm, whipworm, and Capillaria spp.) and cysts of Giardia sp. in their feces. Necropsy findings of 1 raccoon dog revealed a large number of adult hookworms in the duodenum. These hookworms were identified as Arthrostoma miyazakiense based on the 10 articulated plates observed in the buccal capsule and the presence of right-sided prevulval papillae. Eggs of A. miyazakiense were $60-65{\times}35-40{\mu}m$ (av, $62.5{\times}35{\mu}m$), and were morphologically indistinguishable from those of Ancyiostoma caninum. The eggs were cultured to infective 2nd stage larvae via charcoal culture, and 100 infective larvae were used to experimentally infect each of 3 mixed-bred puppies. All puppies harbored hookworm eggs in their feces on the 12th day after infection. This is the first report thus far concerning A. miyazakiense infections in raccoon dogs in Korea, and the first such report outside of Japan.

Present Status of Fisheries Wealth in Angola

  • Konda, Fredy Ditomene Mbala
    • 한국해양바이오학회지
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    • 제3권1호
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    • pp.1-6
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    • 2008
  • Angola has a coastline of about 1,650 km long. Two diverging current namely, the Angola current with its warm water from the north and the cold Benguella Current in the south create a strong up-welling with a high productive ecosystem for marine resources. The area from Lobito to the mouth of the Cunene River, also known as the Southern fishing zone is by far the most productive of Angola's fishing zones. In 1977, the total potential of its marine fisheries sector was estimated at more than 700,000 tonnes per annum. In 2003, the Total Allowable Catch (TAC) established for demersal species was 57,600 tonnes and 160,000 tonnes for pelagic species. The most important resources are various marine demersal and pelagic fish including pilchard and the Cape and Cunene horse Mackerel (Tranchurus capensis and T. trecae). Sardinellas (Sardinella aurita and S. maderensis) are fished in parallel with horse mackerel. The rest of the catches are mainly demersal spp. and some deep water crustaceans. The demersal sppecies consist of Hake (Merluccius polli and M. capensis) and the large eye dentex spp. Tunas are caught at certain times of the year whilst some marine shrimp are also harvested from the Angolan waters. Angola also has several high value freshwater fish species, exploited by about 255 fishers. Tilapia sp. is among the most important and abundant fresh water fish found in Angola. Other species include the catfish (Clarias gariepinus) and fresh water prawns (Macrobrachuin rosenbergii). Some aquaculture ponds have been established in the country side, but due to lack of investment, proper training and the impact of civil war have seriously limited developments in the sub sector.

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새만금방조제 건설로 인한 조업구역의 변경이 전라북도 근해형망어업의 패류어획량에 미치는 영향 (Influence on the catch of shellfish by offshore dredge fishery according to change fishing area to the construction of the Samangeum Dike in Jeollabuk-do, Korea)

  • 최종덕;류동기;이미희
    • 수산해양기술연구
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    • 제53권3호
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    • pp.266-275
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    • 2017
  • The maximum sustained yield (MSY) of shellfish caught through dredge fishery was 7,250 to 7,490 MT from 1990 to 1999, which was not affected by the construction of the Saemangeum Dike. The MSY from 2000 to 2016, under the influence of the dike, was 1,716 to 1,776 MT when the total annual fish catch was 1,000 MT or more, and 289 to 336 MT when it was less than 1,000 MT. The construction of the Saemangeum Dike led to a decrease in the catch volume of the offshore dredge fishery in Jeollabuk-do, to 4.2 to 23.7% of that before its construction. The allowable biological catch (ABC) was estimated to be 313 to 1,532 MT per year, which was about 72.3 to 94.3% less than before the construction of Saemangeum Dike. Currently, the dredge fishery in Jeollabuk-do relies on comb pen shells. For fishery management, the catch per vessel should be set at 51.0 MT/year or less, and the number of fishing vessels should be reduced to 22 as quickly as possible. Besides, in the long term, the number of current fishing vessels should be reduced to less than half in consideration of the comb pen shell collecting period in Jeollabuk-do.