• 제목/요약/키워드: East-Asia

검색결과 2,232건 처리시간 0.025초

동북아시아 연계계통의 신뢰도평가 (Reliability Evaluation for Interconnecting the Power Systems in North East Asia)

  • 최재석;권중지;트란트룽틴;윤재영;박동욱;문승일;차준민
    • 대한전기학회:학술대회논문집
    • /
    • 대한전기학회 2005년도 추계학술대회 논문집 전력기술부문
    • /
    • pp.17-19
    • /
    • 2005
  • This paper illustrates the case studies of reliability evaluation for interconnecting power systems in the north east Asia by using the tie line constrained equivalent assisting generator model(TEAG), which has been already developed in the second project year. A reliability evaluation program, it is named, NEAREL. based on the TEAS model was made. The reliability evaluation results for the seven interconnection scenarios of the actual power systems of six countries in the north east Asia are introduced and compared. The reasonable capacity of the tie line for three countries interconnection senario is suggested from sensitivity analysis.

  • PDF

Preliminary search of intraspecific chloroplast DNA variation of nine evergreen broad leaved plants in East Asia

  • Lee, Jung-Hyun;Lee, Byoung-Yoon;Choi, Byoung-Hee
    • 식물분류학회지
    • /
    • 제41권3호
    • /
    • pp.194-201
    • /
    • 2011
  • In order to acquire information on chloroplast DNA markers to evaluate the genetic diversity of evergreen broad leaved plants, we investigated the intraspecific variation of cpDNA in eight non-coding regions of nine species commonly distributed in East Asia. Although no variations were detected in psbA-trnH, rpoB-trnC, rpl16 and atpB-rbcL regions, a relatively large amount of intraspecific variations was detected in the psbC-trnS, rps16 and trnL-F regions. These results suggested that these three cpDNA markers are suitable to assess genetic diversity of the species investigated in this study. In contrast, intraspecific variations were detected in seven taxa except Hedera rhombea and Neolitsea aciculata. Neolitsea sericea and the taxa of Quercus had many polymorphic sites.

동북아시아 지역의 태양광자원 분석 평가 (Evaluation of Solar Energy Resources in East-North Asia Areas)

  • 조덕기;강용혁
    • 한국태양에너지학회:학술대회논문집
    • /
    • 한국태양에너지학회 2008년도 춘계학술발표대회 논문집
    • /
    • pp.37-42
    • /
    • 2008
  • Since the solar radiation is the main input for sizing any solar photovoltaic system, it will be necessary to understand and evaluate the solar radiation data. The works presented here is the analysis of solar radiation data for East-North Asia areas. The data utilized in the analysis consist of the global radiation on horizontal surface, measured at 2 different stations during 3 years for the period from 2002 to 2004 and estimated using satellite at 27 different stations over the China and Mongolia. Also the measured data has been collected at 16 different stations all of the South Korea and estimated using satellite at 12 different stations over the North Korea from 1982 to 2005. The Result of analysis shows that the annual-average daily global radiation on the horizontal surface is 3.57 $MJ/m^2$. We conclude, based on the analysis, that East-North Asia areas have sufficient solar energy resources for the photovoltaic power generation system.

  • PDF

동아시아 주요국의 FTZ 화물관리 개선방안에 관한 비교연구 - 홍콩, 대만, 상해 FTZ 비교- (A Comparative Study on the Cargo Management of FTZ in East Asia - HongKong, Taiwan, Shanghai FTZ)

  • 김태인
    • 통상정보연구
    • /
    • 제8권4호
    • /
    • pp.125-145
    • /
    • 2006
  • The objective of this paper is to analyze the competitiveness of the Cargo Management improvement of FTZ(Free Trade Zone) in East Asia and to suggest several measures to improve it. To the end, various comparisons are made between the FTZ of Incehon and those in Hongkong, Taiwan, Shanghai. Competitive advantages of Incheon's FTZ over others lie in its better contiguity, frequency, quality service, and convenient connections associated with the airport. To be viable, however, the Incheon's FTZ needs to have strong supports from the central government such as more SOC investment, early introduction of RFID/UBIQUITOUS, improvement of customs process and logistics system, and competitive incentives to bring in more international channel hubs to this area. With these implemented promptly as suggested, the Incheon's FTZ will draw its competitive advantages over those in Taiwan and Shanghai and will play an vital role to bring in more MNEs to Korea.

  • PDF

Development of the National Ecological Observatory Network (NEON)

  • Kim, Eun-Shik
    • Journal of Ecology and Environment
    • /
    • 제30권1호
    • /
    • pp.87-96
    • /
    • 2007
  • After introducing various aspects of the National Ecological Observatory Network (NEON) being planned and established in the US, the author tries to suggest the future direction for the development of similar activities of the NEON to be carried out in the region of East Asia including Korea. A review was carried out in terms of the challenges, major questions, missions, developmental history, and some other specifics of the NEON design. It was further extended to the discussion of the issues for the regional construction of the Ecological Observatory Network (EON) in East Asia. The author hopes that this review could be used as a preliminary guide in ultimately promoting and advancing research, science and technology in conservation and preservation of ecosystems being degraded due to anthropogenic disturbances in the region of East Asia.

엘니뇨 발달기 한반도 및 동아시아 가을 강수량 변동 (The Fall Precipitation Variation during the Development of El Nino over East Asia including Korea)

  • 오현택;권원태;신임철;박이형
    • 한국수자원학회:학술대회논문집
    • /
    • 한국수자원학회 2004년도 학술발표회
    • /
    • pp.1247-1250
    • /
    • 2004
  • The amount of precipitation during El Nino over Korea increases in Summer and Winter. However, it decreases in Fall, and exhibits not much change in Spring. Especially, the amount of precipitation during September of El Nino year is much less than that of the September of non-El Nino year. The amount of precipitation during El Nino year of October and November shows similar amount of precipitation during non-El Nino year of the same period. The reason for decreasing precipitation in September is related to the weakening of the 2nd rainy season during the development of El Nino over East Asia including Korea. Insufficiency of fall precipitation during El Nino year influences drought in Spring for next year.

  • PDF

태양광발전단지 건설을 위한 동아시아 지역의 태양광자원 정밀조사 (A Detailed Survey of Solar Energy Resources for the Construction of Photovoltaic Power Generation Sites in East Asia Areas)

  • 조덕기;강용혁
    • 한국태양에너지학회 논문집
    • /
    • 제26권1호
    • /
    • pp.29-39
    • /
    • 2006
  • Since the solar radiation is the main input for sizing any solar photovoltaic system, it will be necessary to understand and evaluate the solar radiation data. The works presented here are the analysis of solar radiation data for East Asia areas. The data, which consist of the global radiation on horizontal surface, were measured at 16 different stations over the South Korea and were estimated by using satellite at 12 different stations over the North Korea from 1982 to 2004. Also the data over the Japan have been collected for 30 years for the period from 1941 to 1970. The Result of the analysis shows that the annual-average daily global radiation on the horizontal surface is $3.55\;kWh/m^2$. We conclude, based on the analysis, that East Asia areas have sufficient solar energy resources for the photovoltaic power generation system.

우리나라 주요 항만의 중심항 발전전략 (A Development Strategy for Hub-Port in Korea)

  • 양항진;장봉규;정두식
    • 한국항만경제학회지
    • /
    • 제21권1호
    • /
    • pp.23-44
    • /
    • 2005
  • The port environment is rapidly changing in North-East Asia. Containerships are getting larger and faster and major shipping companies are converting to Hub & Spoke port networks on the transport systems. Therefore, the main ports in North-East Asia are intensively competing with each other for hub port. In terms of geopolitical position, locational conditions and external reputation of ports, Busan and Kwangyang ports have a comparative advantage in comparison with main ports in other countries. But in terms of weight of transshipment cargos in total container cargos, the quality of infrastructure in ports, the environment of logistics service and the cost of, using ports, Busan and Kwangyang ports have a comparative disadvantage. For the growth into hub port in North-East Asia, it is necessary that Busan and Kwangyang ports improve their weakness. Besides It is necessary to develope ports and hinterland quickly, offer uniformity of foreign investment laws and incentive systems.

  • PDF

Two New Species of the Genus Candelariella from China and Korea

  • Liu, Dong;Wang, Lisong;Wang, Xin Yu;Hur, Jae-Seoun
    • Mycobiology
    • /
    • 제47권1호
    • /
    • pp.40-49
    • /
    • 2019
  • Candelariella is a widespread lineage of lichenized ascomycetes with ambiguous relationships among species that have not solved completely. In this study, several specimens belonging to Candelariella were collected from China and South Korea, and the internal transcribed spacer region was generated to confirm the system position of the newly collected specimens. Combined with a morphological examination and phylogenetic analysis, two new areolate species, Candelariella rubrisoli and C. subsquamulosa, are new to science. Detail descriptions of each new species are presented. In addition, C. canadensis is firstly reported from China mainland.

동아시아의 쌀과 밀 관련 식품의 언어 비교 (A comparative study on the language of food related to rice and wheat in East Asia)

  • 한성우
    • 식품과학과 산업
    • /
    • 제50권2호
    • /
    • pp.74-85
    • /
    • 2017
  • This paper aims to compare the language of food related to rice and wheat in Korean, Chinese and Japanese. These three countries in East Asia are very close in terms of geography, history, and culture. As of language, Korean and Japanese are classified as a same language family, while Chinese, to another. However, since three countries have been sharing Chinese character and words composed of it, there are many alike things in their languages. It is natural that food and the language of food are shared in neighboring areas. Among many food, I will explain the names of rice and wheat and the details of the names of various food made of them. In particular, rather than a simple comparison, the language of food is analyzed in the viewpoint of migration. And I will look into the names of food not only in relation to language, but also in culture, society and history.