• 디지털융복합연구
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• 제16권4호
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• pp.49-54
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• 2018

러시아는 북극의 항로와 항만을 소유하고 접근할 수 있는 권한을 가지고 있다. 북극항로는 지난 수십 년간 주요 논쟁의 대상이 되었다. 항로상에서 화물처리를 위하여 적합한 항만시스템은 필수적이다. 본 연구는 2007년에서 2016년 사이 북극항로에 위치한 러시아 항만의 개발 및 경쟁에 대한 현상을 분석하는 것을 목적으로 하였다. 연구 방법은 HHI, CR, Gini Coefficient, Lorenz Curve, Shift-Share Analysis를 사용하였다. 연구결과, 집중화현상과 약한 성장 및 작은 규모의 항만경쟁이 있음을 밝혔다. 본 연구는 북극항로에 위치한 항만 관련 연구가 미진한 현재 상황에서 의미가 있으며, 연구결과는 항만정책 담당자, PA 담당자 및 연구자에게 시사점을 제공한다.

• 한국항만경제학회지
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• 제31권4호
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• pp.75-89
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• 2015

본 연구에서는 각 항만들이 다루고 있는 31개의 수출입화물품목에 대하여 품목간 항만간 경쟁을 규명하고, 실제 항만간 전이량을 파악한 후, 가장 큰 폭의 물동량 하락을 경험하고 있는 항만의 향후 정책에 대한 제언을 하는 것을 연구 목적으로 하였다. 2005년~2014년 서해안 권역의 물동량 집중도는 점차 분산화되고 있는 것으로 나타났다. 특히 2009년을 기점으로 급격히 분산화가 진행되었으며 2014년에는 0.448으로 나타나 권역별 경쟁이 치열해지고 있었다. BCG Matrix를 이용해 인천항, 평택 당진항, 군산항의 정적포지셔닝과 동적포지셔닝을 분석한 결과, 정적포지셔닝분석에서는 인천항은 3사분면(Cash Cows),평택 당진항은 2사분면(Question Marks), 군산항은 (Dogs)군에 위치하고 있는 것으로 나타나 인천항은 비록 성장률은 낮지만 상대 항만군에 대한 높은 점유율로써 그 위치를 유지하고 있었다. 그러나 동적포지셔닝 분석에서는 시간이 흐름에 따라 인천항의 시장점유율과 성장률은 하락하고 있는 것으로 나타났다. 전이할당 분석결과, 인천항과 군산항의 물동량은 평택항으로 전이되고 있으며, 인천항과 군산항은 잠재성장치 대비 절대성장치가 평택 당진항보다 크게 못 미치는 것으로 밝혀졌다. LQ지수 분석결과, 타 항만과 중복되지 않는 인천항의 특화품목은 육류, 어패류 갑각류 등, 유연탄, 원유 및 석유, 석유정제품, 플라스틱 고무 및 그 제품, 방직용 섬유 및 그 제품, 비철금속 및 그 제품, 전기기기 및 그 제품, 항공기, 선박 및 그 부품으로 10개 품목으로 분석되었다.

• 한국자동차공학회논문집
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• 제8권2호
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• pp.33-40
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• 2000

In order to investigate the exhaust structure and secondary oxidation of unburned hydrocarbon (HC) in the exhaust port, a numerical simulation was performed with 3-dimensional flow model and oxidation mechanism optimized for port oxidation. To predict the exhaust and oxidation process with consideration of flow, mixing, and temperature, 3-dimensional flow model and HC oxidation model were used with a commercial computational program, STAR-CD. The flow model were with moving grid for valve motion, which could predict the change of flow field with respect to valve lift. Optimization was performed to predict the HC oxidation with temperature range of 1200~1500K, low HC and oxygen concentration, existence of intermediate species, as typical in port oxidation. The constructed model could predict the port oxidation process with oxidation degree of 14~48% according to the engine operation conditions.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2000년도 추계학술대회논문집
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• pp.85.2-93
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• 2000

A demand of marine outfall system have been much increased for the effective disposal of the wastewater due to population and industrial development at the coastal areas. The outfall system discharges primary or secondary treated effluent into coastline or at the deep water, or between these two. The discharge is carried out by constructing a pipeline on the sea bed with a diffuser or with a tunnel, risers and appropriate. The effluent, which has a density similar to that of fresh water, rises to the sea surface forming plume or jet, together with entraining the surrounding salt water and becomes very dilute. Thus there have been growing interests about plume behaviour around the outfall system. Plume or jet discharged from single-port or multi-port diffuser might cause certain impacts on coastal environment. Near field mixing characteristics of discharged water field using CORMIX model with has been studied for effective outfall design various conditions on ambient current, depth, flow rate, effluent concentration, diffuser specification, port specification etc.. This kind of analysis is necessary to deal with water quality problems caused by the ocean discharge. The analyzed vesult was applied to the Pusan Jungang dffluent outfall system plan.

• 한국항해항만학회지
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• 제41권6호
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• pp.437-444
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• 2017

위험 유해물질(HNS) 유출사고를 대비하기 위하여 본 연구에서는 지역별 산업 집중도를 지수화하여 동향을 파악하기 위해 쓰이는 집중도지수를 활용하여 HNS 사고의 지역별 집중도를 확인하였다. 이는 HNS를 포함한 해양 유출사고 데이터를 바탕으로 HNS 사고 규모 집중도지수와 HNS 사고 빈도 집중도지수를 수치화하여 하나의 값인 HNS 사고 집중도지수를 제시하는 방식이다. 도출된 지역별 HNS 사고집중도 지수값를 바탕으로 울산을 HNS 대비 최우선 지역, 여수, 부산, 태안을 HNS 대비 우선지역, 군산, 목포, 완도, 인천, 통영, 평택, 포항을 HNS 대비 필요지역, 그 밖에 해양유출사고가 발생하지 않은 동해, 보령, 부안, 서귀포, 속초, 제주, 창원을 HNS 대비 지원지역으로 그룹화하여 대비측면의 우선순위를 설정하였다.

• 한국연소학회:학술대회논문집
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• 한국연소학회 2012년도 제44회 KOSCO SYMPOSIUM 초록집
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• pp.43-46
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• 2012

The oxygen concentration of primary oxidizer is decided under 10% due to flammable risk. It can be a spontaneous combustion inside burner or tube if the excess oxygen is added to primary oxidizer in Oxy-PC burner. In this case, the rest oxygen which can not be injected to primary oxidizer should be injected to another port. If added it to a second oxidizer, the ignition is unstable at outlet of burner. Accordingly an extra lancing port is needed to insert into the burner unlike other common air mode. And the flame formation and combustion characteristic differ from lancing port position. Therefore we observed flame formation which has stable combustion characteristic according to the shape and position of lancing port.

• 한국항해항만학회지
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• 제31권3호
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• pp.187-195
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• 2007

중국은 '중국의 아시아 비즈니스 중심화'라는 전략을 수립하고 항만 및 물류분야 인프라 구축 및 집중 개발정책을 적극 추진하고 있다. 그 중점적인 개발 대상은 상하이항과 장강유역이다. 이러한 중국정부의 상하이항과 장강유역의 개발이 동북아시아의 물류집중화를 더욱 촉진시키고 있고, 또한 중화권의 해운항만이 더욱 활성화되는 기폭제가 되고 있다. 이에 따라, 우리나라의 대응전략으로 크게 세 가지를 제시하였다. 첫째, 중화물류권의 성장에 따른 우리선사들의 차별화된 서비스와 네트워크, 둘째, 장강 유역에서 화물 운송 서비스사업에 나서기 위해서는 중국 기업과 합작 투자, 셋째, 상하이항과 장강 개발에 따른 환황해권 해상교통망을 구축하는 것이다.

• 한국항만학회지
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• 제14권3호
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• pp.361-371
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• 2000

A demand of marine outfall system has been much increased for the effective disposal of the wastewater due to population and industrial development at the coastal areas. The outfall system discharges primary or secondary treated effluent into the coastline, or at the deep water, or between these two. The discharge is carried out by constructing a pipeline on the sea bed with a diffuser or with a tunnel, risers and appropriate. The effluent, which has a density similar to that of fresh water, rises to the sea surface forming plume or jet, together with entraining the surrounding salt water and becomes very dilute. Thus there have been growing interests about plume behaviour around the outfall system. Plume or jet discharged from single-port or multi-port diffuser might cause certain impacts on coastal environment. Near field mixing characteristics of discharged water field using CORMIX model have been studied for effective outfall design various conditions on ambient current, depth, flow rate, effluent concentration, diffuser specification, port specification etc.. This kind of analysis is necessary to deal with water quality problems caused by the ocean discharge. The analyzed result was applied to the Pusan Jungang effluent outfall system plan.

• 한국토양비료학회지
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• 제45권1호
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• pp.107-111
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• 2012

Eight marine sediments from Busan port in Korea were annually analyzed to examine the concentration distribution of dioxins from 2006 to 2010. Yearly mean concentration of dioxins ranged from 186.3 to $383.3pg\;g^{-1}$ in real values and 5.087 to 8.541 pg-TEQ (Toxicity equivalency) based on dry weight of samples. The dioxin concentration at the site near fishing market was the highest concentration among all sampling sites. Also the dioxin concentration at the sites with various pollutant sources such as large ships, sewage influx and thermal power station as well as fishing market was higher than that of the sites without specific pollutant sources. Another main factor that affects the dioxin concentration is topography characteristics of the bay. The bay has relatively high dioxin concentration because of the lack of the pollutant diffusion. This study demonstrated that the dioxin concentration in the site with pollutant sources and the lack of the pollutant diffusion was relatively high as compared with the other sites. As a result of contribution ratio of dioxin congeners, OCDD (Octachlorodibenzodioxin) in all sites was major contributor in real value, in contrast, dioxin congeners in TEQ values were dominated by 2,3,4,7,8-PeCDF.

• 한국항해학회지
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• 제20권1호
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• pp.59-79
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• 1996

Waterfront redevelopment is an element in the process of inner-city regeneration now widespread in many ports of the world. Academic interest in the processes involved has yielded a literature biased towards specific locations rather than towards the analysis of processes and issues. The redevelopment of urban waterfronts does not, of course, occur exclusively in port cities but is found as a continuous process in most places where settlement and water are juxtaposed, whether or not commercial port activity is or was present. Port cities, however, as a result of the concentration and juxtaposition of urban and maritime influences, generally present the major issues involved in waterfront redevelopment most clearly. In this context, the general aim is to explore Korean dimensions of waterfront redevelopment in a range of port cities in a context of inner-urban renewal; and a specific objective is to examine the views of decision-makers in Korean port cities on the processes involved by a questionnaire method. The focus is on comparative strategies, and in particular upon the factors affecting the balance between social goals and commercial interests. To test the response of four categories of decision-makers in Korean port cities on a number of issues perceived as underpinning the processes involved in waterfront redevelopment, four catergories of respondents-port authority representatives(PO), urban planners(UP), port specialists(PS) and city-government official(GO)-were asked to fill in a questionnaire form. In three out of ten cases, the overall result broadly confirmed the a priori expectation; in six cases the confirmation was partial; and in one other the view of respondent was generally contrary to those anticipated. In many, but by no means all, cases there was substantial agreement between the four categories of respondents, but the range of scores was generally much wider than expected.