• Proceedings of the Korea Air Pollution Research Association Conference
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• 2001.11a
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• pp.403-404
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• 2001

전구물질에 의해 생성되는 이차오염물질인 $O_3$은 기상장의 영향으로 인한 두가지 형태의 수송에 의해 방출원이 아닌 다른 지역에서 오염물질의 고농도 현상을 야기할 수 있다. 첫 번째 형태의 수송은 종관장이 강한 날에 발생할 수 있는 것으로 방출원에서 타 지역으로 경도풍에 의한 오염물질의 장거리 수송이다(Cox et al.,1975 : Apling et al.,1977). 두 번째 형태는 종관장이 약하여 국지순환계가 발달하고 연안지역과 내륙지역의 기온차이에 의해 발생하는 내륙지역의 열적 저기압의 형성과 이에 따른 연안지역에서 내륙지역으로의 오염물질의 수송이다(Kurita and Ueda, 1990). (중략)

• Korean Journal of Environment and Ecology
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• v.21 no.6
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• pp.461-467
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• 2007

The research on food habits of the Fire-bellied toad, Bombina orientalis, distributed in Korea was done targeting a total of 487 individuals in 4 inland areas and 8 areas of Jeju island from April 1990 to September 1992. The survey results showed that there was no difference In the number of the preys of the Korean Fire-bellied per individual between the inland areas and Jeju island and the toad preyed on 1 to 3 individuals on an average, but there happened a case where some Fire-bellied toads in Jeju preyed on as much as 94 individuals. There were 13 orders surveyed in the kinds of prey of the Fire-bellied toad inland, and 10 in Jeju island with a high predation frequency and the number of the preyed individuals of Coleoptera and Hymenoptera. The predation frequency of the two populations was similar in terms of prey taxa, but there appealed a different aspect in the number of the individuals by prey taxa. In short, the inland population of Fire-bellied toad was found to eat more various sorts of preys, not satisfied with limited sorts of preys in comparison with the Jeju toad. There appeared a difference in eating habits by month between the two populations; the feeding duration of the inland population was from May to October, but the Jeju population was from April to September. Among the kinds of prey taxa, Coleoptera and Hymenoptera were equally distributed to the two populations of Korean Fire-bellied toad for this research purpose during the survey period. The number of orders, predation frequency and the number of the prey taxa by one population prey were rather higher in the summer. Therefore, it is concluded that the most active period of predation of the Korean Fire-bellied toad is summer.

• Journal of Navigation and Port Research
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• v.32 no.5
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• pp.387-394
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• 2008

The cost of domestic container transportation is higher than international sea transportation and it cannot meet the needs of customers either. However, domestic carriers try hardly nothing to improve the carriage system. Especially, the inland transportation connecting Busan port is not receiving a careful study in spite of the importance and urgency now. This paper reviews intention of forwarders, shipping companies, and transport companies conducting a questionnaire and analyse the preferences of transportation modes amongst existing highway, railway, coastal shipping and inland waterway. Its aim is to analyse which factors affect freight agents to choose particular mode.

• Journal of Korea Port Economic Association
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• v.33 no.3
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• pp.1-16
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• 2017

China has achieved rapid economic growth in the late 1970s with economic reform and open-door policy. China's economic growth began initially in the eastern coastal areas and from the 2000s expanded to the western and northeastern regions where the economy was relatively underdeveloped. In particular, in 2013 'One-Belt One Road' initiative proposed by Xi Jinping, the current General Secretary of the Communist Party of China is not only a key strategy for China's advancement into the world and also provides important opportunities for the development of these backward regions. Inland Port is the inland logistics hub and plays a crucial role in enhancing access to maritime ports as well as access to adjacent inland countries. Therefore, a number of inland ports have been developed and operated in order to enter into overseas markets and secure resources in the northeastern and western regions of China. This study aims to examine the role and development of inland port in 'One-Belt One Road' scheme. In conclusion, 'One-Belt One Road' will further increase the role of inland port, and in response, the development of inland port will play a pivotal role in one belt one road initiative. In this respect, Korean companies need to consider plans to participate in the development and operation of inland ports in China, which would provide opportunities to spread Northern markets including China, Russia, Central Asia, Eastern Europe.

• Landscaping Tree
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• s.108
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• pp.23-25
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• 2009

차나무는 정원수로서 많은 장점을 가지고 있으나 중부 내륙 지방에서는 월동이 어려워 남부 지방에서만 차나무를 정원수로 사용하고 있다. 여기서는 차로 마시는 차나무로서 보다는 조경수로서도 매우 활용가치가 높은 수종으로 소개하고자 한다.

• Korean Journal of Environment and Ecology
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• v.30 no.3
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• pp.328-334
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• 2016

This study identified the habitat use pattern and migration distance of spot-billed ducks during winter that occur for breed and wintering. The study was carried out using GPS-mobile phone based Telemetry (WT-300) to provide the research results as basic data for protection and management of the habitats of water birds in Korea. The tracking devices (WT-300) were attached to a total of twenty spot-billed ducks collected from the rivers and reservoirs in Gyeonggi-do Anseongcheon, Chungcheongnam-do Seocheongun, Jeollabuk-do Mangyunggang, Dongjingang, and Jeollanam-do Haenamgun. It was found that spot-billed ducks used rivers most frequently as their habitats (47.3%), followed by rice fields, ocean, inland wetlands, and tidal flats. While spot-billed ducks used rice fields at night time and ocean, inland wetlands, and tidal flatss at day time, they used rivers regardless of time. Change rate of habitat use pattern was highest between 6:00am and 8:00am and between 16:00pm and 18:00pm. The average daily migration distance was $0.75{\pm}0.27km$/2hours and accumulated migration distance was 8.95km. Spot-billed ducks covered the longest migration distance between 6:00am and 8:00am and between 16:00pm and 18:00pm; the distance they moved during the periods from 6:00am to 8:00am and from 16:00pm to 18:00pm was 2km but during the rest of the time, it was less than 1km for equivalent durations. The time when spot-billed ducks covered the longest migration distance also corresponds to the time when they showed the greatest change rate of habitat use pattern.

• Journal of the Korean association of regional geographers
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• v.19 no.2
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• pp.352-361
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• 2013

This paper aims to analyze the root mean square errors of MODIS LST data and inland water temperature measurement data in order to use MODIS LST data as an input of numerical weather prediction model. MODIS LST data from July 2011 to June 2012 were compared to water temperature measurement data in the automated water quality measurement network. MODIS data have two composites: day-time and night-time. Monthly errors of day-time and night-time LST range $2{\sim}8^{\circ}C$ and $3{\sim}12^{\circ}C$, respectively. Temporally, monthly errors of day-time LST are less in fall and those of night-time LST are less in summer. Spatially, on the four major rivers including the Han, Nakdong, Geum, and Yeongsan rivers, the errors of Yeongsan river were the smallest, which location is the south-most among them. In this study, the errors of MODIS LST as an input of numerical weather prediction model were analyzed and the results can be used as an error level of MODIS LST data for inaccessible areas such as North Korea.

• Journal of the Korean Geographical Society
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• v.38 no.2
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• pp.173-183
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• 2003

This study aims to understand the patterns of spatial distribution of snowfall by Siberian High in the Honam region in Korea. In the Honam region, Siberian High induces snowfall dominantly. There is a huge amount of snowfall in the westward of the Noryung mountain ranges to the Wert coast in the Honam region affected by northwesterly wind directly from the Siberian High. The westward of the Noryung mountain ranges such as a heavy snowfall region has a various pattern of distribution of snowfall due to topography. The coast region has a large amount of snowfall by sea effect. And, snowfall amount is decreased from the coast to the inland plain. However, in front of mountain, snowfall is increase by reason of a forced ascending air to the mountain. In general the region where frequently appear a cumuliform cloud has a large amount of snowfall. A cumuliform cloud is frequent in the mountainous region in inland, the coast, and the inland plain in order Snowfall is intense in the coast and the mountainous region, and weak in the inland plain. In the mountainous region, a cumuliform cloud induced tv a forced ascending air by reason of topography generates snowfall mostly. This fact is the main difference with snowfall in the mountainous region and the coast region. In the result, in the Honam region, snowfall distribution and snowfall pattern are various, according to geographical climate factor such as sea and topography. The heavy snowfall region in the Honam region is divided into the coast region affected by sea effect and the mountainous region affected by topography effect.

• 한국지구과학회:학술대회논문집
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• 2005.09a
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• pp.437-445
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• 2005

지리 중심에 대해서 확실하게 정립된 정의와 이에 대한 여러 가지 방식이 존재하기 때문에 연구자들은 지리 중심을 산출하는데 있어 많은 어려움을 겪는다. 또한 지표면은 굴곡이 심하고 다양한 암상으로 구성되어 밀도 분포가 매우 불균질하고 그 경계 또한 불규칙한 굴곡이기 때문에 중심점을 구한다는 것이 매우 어렵다. 따라서 한 지역에 중심의 정의와 산출 방식에 따라서 여러 중심점이 존재 할 수 있는 것이다. 지리중심결정에 대한 유일한 해법은 없으며 어떤 과학자도 단정할 수 있는 방법은 존재하지 않는다. 본 연구의 목적은 지리정보시스템 분석을 통하여 남한내륙의 지리적, 지질학적 중심지를 정확히 밝히고 학술적으로 정립하는데 있다. 이를 위하여 기존 연구된 사료 수집은 물론 자료 처리를 위한 수치 지형도, 수치 지질도 등의 자료 등을 수집하였다. 또한 지질 및 지리정보 시스템 구축을 위한 사전 준비 작업으로 한국에서 적용된 사례 및 외국의 적용 사례를 파악하고 데이터 수집 및 처리 과정을 적용해 보았다. 그리고 지리정보 시스템의 분석 개념을 설명함으로써 이 분석방법이 얼마나 타당한 분석방법인지에 대해서 고찰해보았다. 중심을 구하기 위해 적용된 조건은 지각이 등밀도 평면일 경우와 암상에 따라 불균질한 평면일 경우로 가정하였으며 이에 따른 남한 내륙의 무게중심점 및 기하학적인 중심점은 매우 다양하게 산출되었다. 그 결과 단순 남한내륙의 해안선 경계를 이용한 여러 중심점들은 대체적으로 충청북도 남부의 반경 20km 이내의 버퍼영역에 밀집하고 있음을 알 수 있었다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2007.12a
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• pp.207-209
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• 2007

본 논문은 내륙 운송 체계 하에서 공 컨테이너의 효율적인 운송관리 문제에 대하여 다루었다. 내부적으론 pickup and delivery 제약조건을 적용하여 특정 pick up 시간을 가지는 화물과 터미널에서의 적 컨테이너을 만족하는 차량의 스케줄링 문제이다. 차량의 내부 운송에서 공 컨테이너의 이동이나 공차의 이동 같은 불필요한 이동을 최소화함으로 효율적 운송을 할 수 있다. 또 한 모든 화물과 수입된 적 컨테이너의 pick up time 의 시간 제약으로 인한 차량의 이동 제약를 만족해야 한다. 이 문제를 해결하기 위해서 휴리스틱과 메타 휴리스틱 방법을 이용하여 근사해를 도출한다.