• 대한지리학회지
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• 제46권6호
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• pp.751-766
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• 2011

본 연구는 평택 당진항을 대상으로 화물수송량에 의한 밀집도로 항세권의 계층성을 파악하고, 항만의 수출입량 증대를 위한 활성화방안을 알아보고자 한다. 중국과의 무역증대를 예상하여 건설된 평택 당진항은 자동차, 천연가스를 주축으로 수출입하는 항구로서의 기능이 더욱 강화되어 배후지와 지향지의 항세권은 확대되고 있으나 여전히 반경 70km의 핵심권에서 무역량이 많아 전국적인 항만으로 나아가는 데는 항로의 다변화와 더불어 여러 지역의 화주와 운송업자 및 선사로부터 인정받는 항만의 활성화 정책이 실행되어야 국제적 중심 항으로서의 위상과 기능이 제고될 것이다.

• 수산해양교육연구
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• 제27권4호
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• pp.912-923
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• 2015

In the results of analyzing Korean corrective action for what are required to be improved according to EU listing Korea as yellow-card non-cooperating third countries against IUU fishing, in order to establish advanced fishery order, it is thought that the following additional improvements are required. (1) The introduction of integrated management system of fishing vessel sailing route, fishing activity, fish catch, and inshore fishing vessel must be considered. (2) It is necessary to establish a system to cross check catch transaction, catch landing, and fish catch report submitted by fishing vessel. (3) Catch transshipment approval system shall be introduced. And a system of reporting and checking catch transshipment at sea shall be reinforced. (4) Punishment shall be strengthened to the extent of making people to perceive that loss due to punishment is larger than profit made from illegal fishing. (5) It shall be so improved that more than a certain percentage of all vessels with fish and fish products caught in waters outside Korea's judicial waters shall be arbitrarily chosen and searched besides a case of being suspected to be IUU fishing. In conclusion, on being listed by EU as yellow-card non-cooperating third countries against IUU fishing, Korean fishery management system shall be generally reexamined, and it shall serve as an occasion to exterminate IUU fishing and to advance fishery management system.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2006년도 International Symposium on GPS/GNSS Vol.1
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• pp.513-517
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• 2006

Autonomous Underwater Vehicles plays specific role in underwater investigation. Generally, this kind of vehicles will move along a planned path for sea bottom or underwater installations inspections, search for mineral deposits along shelves, seeking lost items including bottom mines or for hydrographic measurements. A crucial barrier for it remains the possibility of precise determination of their underwater position. Commonly used radionavigation systems do not work in such circumstances or do not guarantee the required accuracies. In the paper some new solution is proposed on the assumption that it is possible to increase the precision by certain processing of a combination of measurements conducted by means of different techniques. Objective of the paper is the idea of navigation of AUV which consists of two phases: firstly a trip of AUV along pre-planned route and after that postprocessed transformation of collected data in post-processing mode. During the processing of collected data the modern adjustment methods have been applied, mainly estimation by means of least squares and M-estimation. Application of these methods should be associated with the measuring and geometric conditions of navigational tasks and thus suited for specific scientific and technical problems of underwater navigation. The first results of computer aided investigation will be presented and the basic scope of these application and possible development directions will be indicated also. The paper is prepared as an partial results of the works carried out within a framework of the research Project: 'Improvement of the Precise Underwater Vehicle Navigation Methods' financed by the Polish Ministry of Education and Science (No 0 T00A 012 25).

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 1996년도 The Korean Institute of Navigation 1996년도 한·중 국제학술 심포지움 및 추계학술발표회 논문집
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• pp.21-29
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• 1996

중국과 한반도와의 해상교통은 기나긴 역사의 물줄기의 흘러온다. 일찍이 서기 8-9세기 당과 신라간에 있었던 우호적인 린방항해는 역사상 전성기를 이루었다 이글은 중국 한반도와 일본의 상관 고대문헌을 고찰한 기초상에서 청해진(오늘의 한국완도) 장보고(Znang Bao-gao) 대사를 대표로한 신라인들이 당나라에 대한 항해활동 및 그활동이 남겨둔 역사의 자적을 연구함으로서 당시 당과 신라간의 주요한 해상교통선을 논증하였다 본 연구는 아래와 같이 지적하고 있다 1. 장보고는 서기 8-9세기 신라 항해역사상 아주 큰 영향력을 가진 대표인물로서 그는 이시기 동북아시아 항해활동에 역사적 공헌하였다 그가 오늘날 한국완도 및 중국 산동반도 등의 지역에 남긴 유적 들은 중국과 한국 및 전체 한반도 교통연구에 고귀한 문화재로 중시받을 가치를 지닌다. 2. 서기 8-9세기 신라와 당간 해상교통 노선을 쌍방 항해사들이 장기간의 왕래와 합작의 산물이며 이는 구체적으로 북항로 중항로와 남항로등 세갈래 중요 항로로 나누어진다 그가운데: --- 중국 요령 연해로부터 신라에 도달하는 북항로는 역사가 영구한 전통성 항로인데 항해가 안전하지만 항로가 비교적 길다 --- 중국 산동반도로부터 신라에 이르는 중하로는 당시 쌍방 해상 왕래에 매우 중요한 항로로써 장보고 등 신라 항해사들이 중국과 왕래하던 주요항로이다 ---중국 강소와 절강 연해로부터 신라에 이르는 남항로는 기본적으로 중항로가 남쪽으로서의 영신혹은 추동된 것으로서 그 왕래하던 시기는 당나라 이후 중국 송나라 시기인데 서기 10세기 이후이다.

• 한국항해학회지
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• 제19권1호
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• pp.33-48
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• 1995

In the process of containerization, the problem of regional maldistribution of container management plan arises seriously due to several factors like a number of unbalances of containers between loading and discharging ports. This study focus on the minimizing cost. This study is composed of two models which in effective management decision making show decision of the number of containers and transfer of empty containers. One is decision of the number of containers which carriers should possess by appropriate forecasting and the other is effective management decision making which includes the transfer of empty containers on calling ports. This study has suggested as follows, First, the Time Series analysis method, especially the "Exponential Smooting with Trend Adjustment" was used to forecast the trade volumes for the designated traffic route. Second, the Time Series analysis method in deciding the optimal number of owned container at the unbalances trade situation between East Bound and West Bound service, most important variables were found such as total traffic volume, the calling interval at a port, the number of days of voyage and the length of stay on shore of container for the optimal number of owned container. Third, effective management decision making model, which makes it possible to analyze the impacts of change in important matters such as lease and positioning policy, and actually influence decision making.on making.

• Molecules and Cells
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• 제21권1호
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• pp.89-103
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• 2006

Population structure was investigated in Reticulitermes speratus populations in the Korean Peninsula and the Japanese Archipelago. All trees derived from analyses of the combined sequence dataset of two mitochondrial genes, COII and COIII, showed that R. speratus populations cluster into two major clades comprising the Korean/southern Japanese populations and the northern Japanese populations. Analysis of population genetic structure showed strong genetic partitioning between populations of the two clades. To understand historical migration routes and current distributions, the phylogeographic history of R. speratus was inferred from intra-/interspecific phylogeny and divergence times estimated between the clades of the phylogenetic tree. The estimated migration route and divergence time of ancestral R. speratus are congruent with recent paleogeographic hypotheses involving land-bridge connections between the Asian continent and the Japanese Archipelago. We suggest that ancestral R. speratus separated into northern and southern Japanese populations after its migration into the Japanese main islands from East China during the early Pleistocene via the East China Sea basin, which may have been exposed during that period. The Korean populations seem to have diverged recently from southern Japanese populations; this may explain the current distribution of R. speratus in the Japanese Arachipelago, and account for why it is restricted to northern areas of the Tokara Strait.

• 한국항해항만학회지
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• 제45권2호
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• pp.54-60
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• 2021

The aim of this study is to determine the critical factors and construction requirements for a new deep-water seaport system in the Lach Huyen area in northern Vietnam. In this study, the Analytic Hierarchical Process (AHP ) method was used to evaluate the importance of the criteria and subcriteria. The results were as follows: the principal criterion "geographical location (0.151)" ranked as the most important criterion for building a new deep-water port system, which is affected by the subcriteria "direct sea route with mega-vessel" and "good liner connectivity index". The principal criterion "port competency (0.145)" ranked second; thus, it can be concluded that good competitiveness of a port' will provide many benefits to the port and the region. Regarding the implication, the established evaluation framework can be used for port construction to make a more reasonable judgment. In a future study, the scope of evaluation factors should be widened, involving participation of broader stakeholders, such as shipping companies, forwarders, and logistics companies.

• 방사성폐기물학회지
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• 제21권2호
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• pp.255-269
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• 2023

Compared to operational wastes, nuclear power plant (NPP) decommissioning wastes are generated in larger quantities within a short time and include diverse types with a wider range of radiation characteristics. Currently used 200 L drums and IP-2 type transport containers are inefficient and restrictive in packaging and transporting decommissioning wastes. Therefore, new packaging and transport containers with greater size, loading weight, and shielding performance have been developed. When transporting radioactive materials, radiological safety should be assessed by reflecting parameters such as the type and quantity of the package, transport route, and transport environment. Thus far, safety evaluations of radioactive waste transport have mainly targeted operational wastes, that have less radioactivity and a smaller amount per transport than decommissioning wastes. Therefore, in this study, the possible radiation effects during the transport from NPP to disposal facilities were evaluated to reflect the characteristics of the newly developed containers and decommissioning wastes. According to the evaluation results, the exposure dose to transport workers, handling workers, and the public was lower than the domestic regulatory limit. In addition, all exposure dose results were confirmed, through sensitivity analysis, to satisfy the evaluation criteria even under circumstances when radioactive materials were released 100% from the container.

• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.1017-1023
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• 2022

Past research shows that the construction of new infrastructure accelerates economic growth in the region by attracting more people and commodities. However, the previous studies only considered large-scale infrastructures such as sea-cross bridges and channel tunnels. There is a paucity of literature on regional infrastructure and its impact on socio-economic indicators. This paper explores the impact of new bridge construction on the human population, particularly focusing on regional bridges constructed during the 2000s in the state of Georgia. The human population at a county level was selected as a single socio-economic factor to be evaluated. A total of 124 cases were investigated as to whether the emergence of a new bridge affected the population change. The interrupted time series analysis was used to statistically examine the significance of population change due to the construction by treating each new bridge as an intervention event. The results show that, out of the 124 cases, the population of 67 cases significantly increased after the bridge construction, while the population of 57 cases was not affected by the construction at a significance level of 0.05. The 124 cases were also analyzed by route type, functional class, and traffic volume, but the results revealed, unlike large-scale infrastructure, that no clear evidence was found that a new bridge would bring an increase in the human population at a county level.

• 대한지리학회지
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• 제30권3호
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• pp.255-268
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• 1995

뒷간에 관한 호칭으로서 한반도에서 가장 넓게 분포되었던 용어는 통시이나, 이 통 시라는 표현은 현재 많이 사용하는 용어가 아니다. 그러나 과거에는 한반도 어느 지역에서 나 가장 보편적으로 사용된 용어임을 답사를 통해서 알 수 있었다. 일반적으로 돼지울과 뒷 간이 함께 만들어진 경우에 통시라고 호칭하는 경향이 있었다. 제주도에서의 통시는 돌로 울을 만들어 돼지울을 만들고, 돼지울의 한쪽에 높게 고상의 형태로 뒷간을 만든다. 즉 돼지 울과 뒷간이 하나의 세트로 이루어졌다. 지리산을 중심으로 고상의 통시가 분포되어 있다. 통시에 돼지를 사육하는 마을도 있고, 고상의 통시이지만 현재는 돼지를 사육하지 않는 마 을도 있다. 선암사와 송광사의 뒷간도 고상의 구조이나 돼지의 사육과는 관계가 없다. 사찰 에서 고상의 뒷간을 만든 이유는 인분을 고화시키면 악취도 안 나고 처내기에 편리하기 때 문이다. 우리 나라에서 가장 단순한 구조를 갖는 뒷간은 디딤돌 뒷간이다. 이 경우는 지면에 디딤들을 2개 놓고 그 위에서 뒤를 보게 되어 있으며, 돼지의 사육과는 관련이 없다. 가장 단순한 구조의 뒷간이다. 서해안 도서 지방의 뒷간을 보면 돼지울과 뒷간이 나란히 배치되 어 있는 경우가 많다. 낙동강 상류 지방에는 남녀 유별의 통시가 많다. 과거 강원도 화전민 의 통시는 안채에 붙어 있다. 다설 지역인 울릉도 나리 분지에 있는 통시는 겨울의 적설기 에 대비한 통시의 구조이다.