• Title/Summary/Keyword: 연어

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Verbal Collocation Extraction from Sejong Tagged Corpus (세종 말뭉치로부터 용언연어 추출)

  • Lee, Jeong-Tae;Cheon, Min-Ah;Kim, Jae-Hoon
    • Annual Conference on Human and Language Technology
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    • 2015.10a
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    • pp.121-123
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    • 2015
  • 연어는 둘 이상의 단어로 구성된 표현으로 연어에 속하는 개개의 단어의 의미로써 연어의 의미를 유추할 수 없다. 따라서 연어의 의미를 분석하거나 번역할 경우 개개의 단어보다는 연어 그 자체를 하나의 분석 단위로 간주하는 것이 훨씬 더 효과적이다. 이를 위해 본 논문에서는 통계기법을 활용하여 세종 말뭉치로 부터 용언연어의 추출 방법을 제시하고 그 성능을 평가한다. 연어 패턴과 통계 정보를 이용해서 연어를 추출한다. 평가를 위해서 연어 사전과 전문가의 주관적 평가를 동시에 수행했다.

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러시아 사할린 지역의 연어치어 생산 방류의 현황

  • 성기백
    • Korean Aquaculture
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    • v.14 no.1
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    • pp.123-130
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    • 2002
  • 가. 러시아 사할린 지역의 연어 부화장은 22곳으로 주로 곱사연어에 대해 어획과 인공부화방류사업을 하고 있다. 나. 대부분의 하천에서 사용하는 포획 시설은 하천 차단식 방법으로 연어를 포획하며, 초기에 소상하는 어 미는 상류로 올려 자연산란을 시키거나 가공회사에 판매를 한다. 다. 곱사연어의 연도별 어획량을 보면, 사할린지역에서는 아니바만에서 가장 많이 어획되었고 북서지역이 가장 저조하였다. 쿠릴지역에서는 이트룹섬에서 가장 많이 어획되었고 1997년이 97,763톤으로 가장 많이 어획되었다. 라. 연어의 어획량을 보면, 1995년의 경우 2.702톤으로 곱사연어 어획량의 약 3%이고 1999년은 5,778톤으로 6%밖에 되지 않아 사할린 지역의 경우 곱사연어의 어획이 주로 이루어짐을 알 수 있다. 마, 곱사연어의 방류량은 1999년을 제외하고는 매년 3억마리 이상이고, 연어는 2억마리 이상을 방류한다.

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북태평양 연어(chum salmon, Oncorhynchus keta) 계군의 유전학적 구분

  • 이윤호;정웅식;김수암;진덕희;성기백
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2003.05a
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    • pp.42-42
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    • 2003
  • 연어는 북태평양 연안의 냉수역에 서식하는 소하성 어류이다. 한국을 비롯한 북태평양 연안국들은 연어 치어를 생산하여 방류한다. 각 나라에서 방류된 연어의 회유경로가 서로 겹치고 인접국의 배타적 경제수역을 지나게 되는 경우가 많아 연어를 방류하는 나라들 간에 자원분쟁의 가능성이 높다. 이러한 분쟁을 조정하고, 연어자원에 대한 합리적인 관리를 위해 연어 계군에 대한 명확한 구분이 필요하다. (중략)

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Extracting Collocations Using Entropy in Korean (엔트로피를 이용한 한국어 연어 추출)

  • 박경미;송만석
    • Proceedings of the Korean Information Science Society Conference
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    • 2002.04b
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    • pp.451-453
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    • 2002
  • 연어는 습관적으로 같이 자주 나타나는 단어열로 각 단어로 분리하기보다 통합해 처리하는 것이 효율적이기 때문에 기계 번역과 음성 인식등에서 유용만 정보로 사용된다. 이러한 연어를 추출하기 위해 본 논문에서는 2가지 경우를 고려했는데, 첫 번째로 인어를 말뭉치에 자주 나타나는 단어열이라고 했을 때 단어열들의 엔트로피가 일정값 이상이면 연어로 추출했다 두 번째로 통사적 제약이 있는 연어를 주술하기 위해 앞 또는 뒤에 올 단어를 제약하는 단어의 엔트로피를 구해 일정값 미만이면 그 단어를 포함한 단어열을 연어로 추출했다. 실험은 품사 부착된 HANTCE 말뭉치를 가지고 수행했고, 젓 번째 방법으로 실험했을 때 엔드로피가 2이상인 단어열을 가지고 분리된 연어도 유도해냈다.

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Present Status and Future Prospect in Salmon Research in Korea (한국의 연어생물학 연구 동향과 전망)

  • Kim, Su-Am;Lee, Chae-Sung;Kang, Su-Kyung
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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    • v.12 no.2
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    • pp.57-60
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    • 2007
  • Interest in chum salmon(Oncorhynchus keta) biology I Korea has increased since the establishment of the Yangyang Inland Hatchery of the National Fisheries Research and Development Institute during mid 1980s. The enhancement program of chum salmon was expanded thereafter, so that chum salmon were transplanted 18 streams in the coast of the Korean Peninsula. However, ecological research on salmon species was very limited due to the lack of a research program. Though involvement in the North Pacific Anadromous Fish Commission (NPAFC) requires scientific investigation on salmon research of each member nation, no conspicuous increase in research funding was achieved in Korea. Oceanic environments have been rapidly altered by climate change during the last a few decades and ocean ecosystems including salmon populations will be modified by global warming. Special attention is needed for stocks near the southern boundary of distribution, such as Korean chum salmon. This special issue is the venue for reviewing ongoing researches in Korea, and we hope that this issue will be a big step toward active ecological research in Korea under changing environments.

은연어의 해수순치시 스트레스 반응의 경시적 변화

  • 전중균;김병기;명정구;박용주;김유희;김종만
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2000.05a
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    • pp.314-315
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    • 2000
  • 이미 작년 양식학회에서 은연어를 대상으로 한 그물작업 및 운반에 따른 스트레스 반응을 조사하여 보고한 바 있다. 따라서, 본 연구에서는 은연어를 해수 순치 하는 과정에서 나타나는 스트레스 반응의 변화를 살펴보고자 하였다. 자연산 은연어와는 달리 양식산은 담수에서 스몰트까지 사육하였다가 해수로 옮겨 사육하는데, 이 때 짧은 기간동안 해수 순치 과정을 거치는 것이 일반적이다. 해수 순치를 하는 동안 은연어는 해수에 적응하기 위해 체내에서 생리적으로 스트레스 반응을 조절할 것이라 여겨지지만, 이에 관한 연구는 많지 않다(Nikinmaa et al., 1983; Franklin et al., 1992). (중략)

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Genetic Similarity-dissimilarity Among Korea Chum Salmons of Each Stream and Their Relationship with Japan salmons (한국 연어의 소상하천간 유전적 유사성과 차이점 및 일본 연어와 유전적 관계)

  • Kim, Go-Eun;Kim, Choong-Gon;Lee, Youn-Ho
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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    • v.12 no.2
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    • pp.94-101
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    • 2007
  • Analysis of population structure of Oncorhynchus keta, the most abundant salmon in the East Sea of Korea, has not been much carried out despite its importance as a fishery resource in the North Pacific. Currently, molecular methods are being applied to stock identification and a method of using single nucleotide polymorphisms (SNPs) is getting more popular. In this study, we analyzed the 720 bp long sequence of the mtDNA COIII-ND3-ND4L region in order to examine genetic similarity-dissimilarity among the Korea chum salmons of each stream and their relationship with the Japan chum salmons. A total of 152 individuals were analyzed, 108 from 3 locations of Korea and 44 from 2 locations of japan, which resulted in as many as 29 different haplotypes. Pairwise $F_{ST}$ and AMOVA tests of the populations show that there is no significant population-level genetic difference among the chum salmons analyzed ($F_{ST}<0.07$). On the other hand, haplotype relationships among the individuals reveal that approximately 25% of the Korea salmons consist genetic lineages independent of Japan salmons and also that a genetic lineage exists in the Puk river and the Namdae river salmons independent of the Wangpi river salmons of Korea.

The Political Ecology of Salmon: Production and Conservation of 'Nature' in Ecotourism (연어의 정치생태학: 생태관광에서 나타나는 '자연'의 생산과 보존)

  • Jang, Hanbyeol;Chi, Sang-Hyun
    • Journal of the Economic Geographical Society of Korea
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    • v.21 no.2
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    • pp.139-155
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    • 2018
  • This study investigates the processes of the "Production of Nature" and the preservation and exploitation of nature in the local festival. The recent discussions in tourism geography address the neoliberalization of nature with its political-ecological interpretation. Yangyang-gun has been one of the main regions that have made efforts to make salmon back to the streams. Also, the Yangyang Salmon Festival was organized to celebrate and symbolize the successful restoration of nature. In fact, however, the festival focuses on the commercialization of salmon. Moreover, it is hard to consider Namdaecheon as the successfully restored ecosystem for salmon. As the returning number of salmon has not significantly increased and the festival itself has not been successful to attract many tourists, the local people show declining interest on the conservation of salmon. Contrast to the catchphrase of the festival to emphasize the conservation of nature and restoration of ecosystem, there are still many hurdles that jeopardize returning of salmon. This controversy leads diverse actors into conflict over the conservation of salmon and Namdaecheon. The players in the dispute encompass local people, local and national governments and international organization. Nature appropriated for ecotourism is selectively defined, used and emphasized by the interests of agencies at multiple scales. The findings of this study show that the concept of "Produced Nature" is more useful than intrinsic or original perspective on nature as long as we try to understand the commercialization of nature that is appropriated for the repertoire of local festival.

U.S. FRESH SALMON MARKET (미국의 연어 시장 가격 예측에 관한 연구)

  • Dae-Kyum Kim
    • The Journal of Fisheries Business Administration
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    • v.18 no.1
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    • pp.99-114
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    • 1987
  • U. S. commercial landings of wild salmon have remained relatively stable for the past 5 years, averaging 300,000 MT. While the same period, U. S. imports of fresh salmon have increased over ten fold from 1.8 to over 19 million pounds. Over 70 percent of the new supplies of fresh salmon come from Norway. Norway exports to the United States were negligible in 1980 and 1981. However, U. S. imported 1,768 M. T. in 1983, 3,896 M. T. in 1984, and 6,272 M. T. in 1985. Over the past 5 years, import price of fresh wild salmon from Canada has declined steadily from $2.58 per pound to $1.25 per pound in 1985, while those from Norway had remained unchanged, ranging from $3.28 to $3.45 over the same period. Norway's cultured salmon entered the United States in 1985 at about $3.35/1b., roughly triple the price of Canadian fresh wild salmon imports. U. S. apparent consumption of fresh and frozen salmon has sharply increased from 50,000 MT in 1981 to 92,000 MT in 1985, up 86 percent over the five years. Annual per capita consumption has increased steadily from 0.47 pounds in 1981 to 0.85 pounds in 1985. The estimated demand models show that the annual wholesale price of fresh salmon in the U. S. market would be declined by increase in supplies and would be raised by increase in the U. S. GNP. The empirical results in this study show that wholesale price of fresh salmon in 1990 would remain unchanged at the 1985 level, under the following condition: 1) Norwegian production of Atlantic fresh salmon would reach 80,000 MT (176 million pounds by 1990) 2) Imports of Norwegian Atlantic fresh salmon would keep the same percentage (21%) of Norwegian productions in 1990 3) Imports from other countries and U. S. domestic production would increase and maintain the same level of 25% of U. S. total supplies in 1990 4) U. S. GNP would increase by $200 billion annually, slightly less than in the past years.

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Food Component Characterization of Muscle From Salmon Frame (연어 Frame 육의 식품성분 특성)

  • Heu, Min-Soo;Kim, Hyung-Jun;Yoon, Min-Seok;Park, Do-Yeong;Park, Kwon-Hyun;Kim, Jin-Soo
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.37 no.11
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    • pp.1452-1456
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    • 2008
  • For the effective use of salmon processing by-products, the food components of salmon frame muscle were investigated and compared with those of fillet muscle. The proximate composition of salmon frame muscle was 73.2 g/100 g muscle for the moisture, 76.9 g/100 g dry material for the protein, 15.7 g/100 g dry material for the lipid and 4.1 g/100 g dry material for the ash. pH and volatile basic nitrogen (VBN) content of salmon frame muscle were 6.63 and 16 mg/100 g, respectively. The proximate composition, pH and VBN of salmon frame muscles were similar to those of salmon fillet muscle. The Hunter values of salmon frame muscle were 55.34 for L value, 16.60 for a value, 19.99 for b value and 48.83 for ${\Delta}E$ value, which were different compared to the salmon fillet muscle. The trichloroacetic acid (TCA) soluble-N content of salmon frame muscle was 542 mg/100 g, which was lower than that of salmon fillet muscle. No difference was found in fatty acid composition, total amino acid, calcium, phosphorus contents and sensory evaluation between salmon frame muscle and salmon fillet muscle. These results suggested that muscle from salmon frame could be used as resources for seafood processing.