• Title/Summary/Keyword: North America

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An Estimation of Port Traffic and the Policy of Port Development;Based on the Busan New Port (해상물동량 예측과 항만개발정책;신항을 중심으로)

  • Yang, Hang-Jin;Chiang, Bong-Gyu
    • Proceedings of the Korea Port Economic Association Conference
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    • 2007.07a
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    • pp.255-270
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    • 2007
  • In North-East Asia, Port traffic in Asia-North America sea route has been rapidly increasing due to economic growth in China and ASEAN. Furthermore, the major shipping companies directly call at northern chinese ports like Qingdao, Dalian and Tianjin without passing through Korean ports on Asia-North America sea route. To acquire a port traffic and develop a hub port, governments in North-East Asia have intensively invested in the development of port. Therefore, Busan new port and Gwangyang port have been developed in Korea. According to the medium-long term development planning, the port should give a enormous budget investment for the port facilities construction. So the inaccurate estimation may lead to the unreasonable port development policy. Firstly, based on the estimation of Chiang Bong-Gyu & Yang Hang Jin(2005), this study gave a comparison with the estimation of Ministry of Maritime Affairs and Fisheries(2001) and OSC/Glori(2005). Secondly, taking into account the influence factors for port traffic, this study made an estimation of port traffic for Busan new port. On the basis of this estimation, this study is compared with the estimation of Ministry of Maritime Affairs and Fisheries(2001) and OSC/Glori(2005). In conclusion, in case of the development of Busan new port, based on the estimation of Ministry of Maritime Affairs and Fisheries(2001), this study should the high possibility that the Busan new port will be serious lack of the port facilities in the year of 2011. And according to the OSC/Glori(2005)'s estimation result, there is a lack of the port facilities, though we have modified the port investment plan.

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Optimal Containership Size by Way of Total Shipping Cost Analysis (컨테이너선의 총 운항비용 분석을 통한 노선별 최적선형 도출)

  • Kim Tae-Won;Han Yu-Nam;Nam Ki-Chan;Kwak Kyu-Seok
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2004.11a
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    • pp.245-251
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    • 2004
  • Determination the optimal containership size is the most important factor for competitiveness if shipping companies. Accordingly, the objective if this research is determining the optimal containership size by service routes. Total shipping cost is calculated at the ground if capital cost, vessel operation costs, voyage costs, port charge and miscellaneous cost for 'Europe-Far East', 'Far East-North America' and 'Europe-Far East-North America' Services. Finally, the optimal containership size was utilized through total shipping cost, slot quantity if containership and average throughput by containership.

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The Development of Stream Ecology and Current Status (하천 생태학의 발전과 우리나라 하천 연구의 현황)

  • Joo, Gea-Jae;Kim, Hyun-Woo;Ha, Kyong
    • The Korean Journal of Ecology
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    • v.20 no.1
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    • pp.69-78
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    • 1997
  • The development of stream ecology, especially the progress of that field in North America, has been briefly reviewed, and stream studies in Korea were analyzed through literature survey. During the last two decades, theoretical advances in stream ecology and understanding of the structure and function of stream ecosystem were made from the studies mainly in North America. Early studies (1960-1970) focused on determination of the environmental factors controlling the distribution and abundance of organisms dwelling in streams. Introduction of conceptual development, such as the functional feeding concept, river continuum concept, and nutrient spiraling was notable in the late 70's and the 80's. For last 20 years, experimentation approaches to apply ecological principles were very fruitful in the understanding of community structure. Even though studies on the stream ecosystem is Korea have a long history, most of works were concentrated on limited subjects: water quality, abundance and distribution of aquatic insects and fishes. Basic ecological attributes of stream organi는 and test of ecological principles have rarely been a subject of research topics. We must concentrate our effort to enhance our understanding of stream and river ecosystem through qualitative, experimental and interdisciplinary approaches.

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Light Distribution Pattern of Optical System in Street Lights with AC COB-Type LEDs (AC COB형 LED 가로등의 광학계 배광 패턴)

  • Kim, Young-Gil;Yoo, Kyung-Sun;Lee, Chang-Soo;Hyun, Dong-Hoon
    • Journal of the Korean Society of Manufacturing Technology Engineers
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    • v.26 no.1
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    • pp.66-73
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    • 2017
  • This study attempted to design lights with Type II distribution suitable for LED street lights based on the regulations of street light distribution developed by the Illuminating Engineering Society of North America (IESNA). The shape of an asymmetric lens, different from that of a rotationally symmetric lens, cannot be generated using a simple mathematical formula. In the first trial, the outline of the lens was fixed and simulated to confirm the distribution type. Following ISENA regulations, some problems that occurred during simulations and repeating was be modified that process is how we detected errors. Through optical research and simulations, a lens conforming to the regulations of Type II very short, Type II short, and Type II medium distributions was developed. A prototype was developed using simulation data and it was subjected to distribution tests. The results show that it can compare with property of Type II distribution.

Genetic positioning of Korean viral hemorrhagic septicemia virus (VHSV) from cultured and wild marine fishes

  • Kim, Wi-Sik;Jung, Sung-Ju;Kim, Jong-Oh;Kim, Du-Woon;Kim, Jeong-Ho;Oh, Myung-Joo
    • Journal of fish pathology
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    • v.24 no.1
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    • pp.1-9
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    • 2011
  • Viral haemorrhagic septicaemia virus (VHSV) is an epidemic virus in olive flounder Paralichthys olivaceus farms in Korea, since the virus have first isolated in 2001. In the present study, partial glycoprotein (G) gene nucleotide sequences of seven Korean VHSV from cultured olive flounder and wild marine fishes in coastal areas of Korea were analyzed to evaluate their genetic relatedness to worldwide isolates. Phylogenetically, all Korean VHSV formed only one minor cluster including Japanese isolates, in genotype IVa, while the North America isolates formed a different minor cluster in genotype IVa. These results suggest that Korean VHSV could be an indigenous virus in Korean and Japanese coastal areas, but have not been introduced from North America.

동종요법의 임상적 의미와 한의학적 응용 가능성에 관한 고찰

  • Choi, Ok-Byung
    • Journal of Pharmacopuncture
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    • v.10 no.1 s.22
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    • pp.55-66
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    • 2007
  • Objectives : The purpose of this study is to analyze the practical implications of homeopathic medicines, their status, their preparation systems and registration rules, recognized by the European Union and other countries. Contents : This paper covers the background of homeopathic medical principle, homeopathy throughout the world, the medicine status and clinical research, increases of the drug potency, the practical regulation of treatment, preparation techniques of homeopathic drugs and registration rules and the clinical practice. Homeopathy has been currently practised in over eighty countries throughout the world, especially in Europe. It had attracted considerable attentions in South and North America (notably in USA, Brazil, and Argentina), India and Pakistan. Although it is not dominantly popular in North America, constant growth has been nevertheless noted. Over the last thirty years, homeopathy has also developed or appeared in South Africa, Tunisia, Morocco, Venezuela, Israel, and Australia, etc. Result & suggestion : As over 300 million patients have put their trust in homeopathy, the study of the integration of homeopathy to oriental medicine, its development and feasibility in Korea are urgently needed. The products, substances, compositions of Homeopathic drugs are very similar to those of oriental medicine theory. Therefore their preparations and applications should prescribed and practised exclusively by oriental doctors. Applying the homeopathic theory and its preparation techniques to oriental medicine, the herbal acupuncture preparation should be modernized and various oriental products are to be developed. To this end, government and herbal acupuncture society need to interact each other for the development of oriental medicine.

The Study on the Oceanic Surface Wind Retrieval using TRMM Microwave Imager (TRMM TMI를 이용한 해상풍 추정에 관한 연구)

  • Kim, Young-Seup;Hong, Gi-Man
    • Journal of the Korean Association of Geographic Information Studies
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    • v.5 no.2
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    • pp.47-53
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    • 2002
  • Ocean surface wind speed was estimated using TRMM (Tropical Rainfall Measurement Mission) TMI (TRMM Microwave/Imager) data. It is used the TRMM TMI brightness temperature and National Data Buoy Center's buoy winds speed dataset near North-America to estimate by the algorithm of the ocean surface wind speed retrieval over North America. Comparing with the buoy data by D-matrix equation, the result that RMSE, BIAS, and correlation coefficient are 2.19 $ms^{-1}$, 1.10 $ms^{-1}$, and 0.81, respectively. Therefore the estimated oceanic surface wind speed by TRMM TMI brightness temperature data show that available to ocean research over upper ocean.

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Research on the Amount of Empty Containers in Japanese Main Ports

  • Kubo, Masayoshi;Zhang, Wenhui
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2004.08a
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    • pp.87-95
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    • 2004
  • Economic development is remarkable in Asia and progress of industrialization of NIES, ASEAN, and China in East Asia has increased the international physical distribution in this area. However, an imbalance of trade becomes severe in these areas. The imbalance is especially big in the Asia-North America route and the Japan-China route. The imbalance in the Asia -North America liner route is 5.04 million TEUS in 2002.The transportation ratio of loaded containers between China and Japan route is approximately 3:1 in 2000. In other words, it means that the transportation of loaded containers from China to Japan is 3, the transportation of loaded containers from Japan to China is I. The imbalance at a port is generally obtained by subtracting export loaded container cargo volume from import container cargo volume. However, the imbalance and the empty containers at the port are not always same. Then, in order to evaluate rationalization and efficiency of maritime container transportation, we introduce the amount of empty containers at a port as an evaluation index. However, the past data of the amount of handling empty containers have a lot of lacking portions. Then, it is necessary to estimate the past amount of empty containers in order to grasp the amount of empty containers historically. So, we construct the model that estimates the amount of empty containers using the imbalance of main port statistics in Japan.

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