• KSCE Journal of Civil and Environmental Engineering Research
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• v.42 no.4
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• pp.549-557
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• 2022

Due to harsh conditions of construction site, understanding of current feature of terrain and other infrastructures is critical issue for site managers. However, because of difficulties in acquiring the geographical information of the construction sites such as large sites and limited capability of construction workers, comprehensive site investigation of current feature of construction site is not an easy task for construction managers. To address these circumstances of construction sites, this study deduce difficulties and applicabilities of unmanned aerial vehicle in the area of construction site management. To confirm applicability of UAV in civil construction project, case study have been conducted on the road construction project. The result of case study proved that the developed system is one of promising technologies that has been studied in construction site management. To improve applicability of UAV for construction and process management information, law and technical issues will be an important area of future study.

• Journal of the Korean Society of Marine Environment & Safety
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• v.13 no.4
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• pp.87-93
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• 2007

Tourists' needs are changing rapidly and new niche markets, such as nature tourism, eco-tourism, and marine tourism, are flourishing in response to consumer demand. Especially, the estimating demand & supply of manpower in marine tourism is a very important issue for basic tourism HRD policy. This research is focused on the estimation of growing demands of manpower and suggests the method to estimate the proper number of manpower in marine tourism industry.

• Proceedings of the Korean Society of Marine Engineers Conference
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• 2012.06a
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• pp.43-46
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• 2012

2011년 IMA의 자료[1]에 의하면, 현재 251척의 부유식 생산설비가 운영되고 있으며, 이중 FPSO가 차지하는 비율은 64%에 이른다. 또한, 가장 각광을 받고 있는 부유식 생산설비의 유형인 FPSO는 현재 40여척을 건조 (New building) 및 개조(Conversion)를 하고 있다. 전체적인 FPSO의 개발 및 건조 프로젝트는 일반 선박 프로 젝트와는 다르게 환경적, 정치적, 상업적인 영향을 많이 받는다. 예를 들면, 같은 구역에 석유/가스 채굴을 위한 프로젝트를 승인받은 기업들은 각자의 기술력, 재정상태, 채굴구역의 정치적인 영향력에 따라서 프로젝트의 초기 개념설계부터 전혀 다른 방향으로 구축할 수 있다. 이러한 변수가 많은 프로젝트를 성공적으로 수행하기 위해서는 각 단계별 세부 계획도 동시에 이루어져야 한다. 본 연구에서는 이러한 세계적인 해양구조물의 대표 격인 FPSO의 특성을 보고하고 이와 관련되는 프로젝트의 다양한 수행 절차 및 시스템/장비에 대해 설명한다.

• Journal of the Korean Society of Marine Environment & Safety
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• v.26 no.6
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• pp.715-722
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• 2020

This paper proposes a design verification method based on system dynamics for offshore separation systems. Oil and gas separation systems are key components of offshore oil platforms; these systems determine the competitiveness of engineering, procurement, and construction (EPC) projects, especially in terms of added value. However, previous research on design verification has been limited to the process and deliverables of design. To address this, the study aims to develop a comprehensive design verification method and the associated functions from the perspective of project management, for the entire project life-cycle of offshore structures. The proposed methodology for design verification is expected to contribute toward effective and detailed designs as well as improve the competitiveness of EPC companies in constructing of shore structures during the early design stages. We first analyzed the separation system of the FPSO using the design verification method adopted by advanced countries and compared it with the system dynamics process formalized as ISO 15288. Subsequently, a tailored process for the design verification of the offshore structure was derived. It is shown that the proposed design verification method can be applied to the front-end engineering design process of of shore structures. Moreover, it can contribute toward the successful performance of offshore projects in the future and also minimize design changes and critical risks during the construction of these offshore structures.

• Bulletin of the Society of Naval Architects of Korea
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• v.38 no.4
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• pp.39-45
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• 2001

• Journal of Welding and Joining
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• v.10 no.4
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• pp.91-97
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• 1992

1973년 사우디 아라비아의 주베일(Jubail)산업항 건설프로젝트의 해상 철구조물을 제작하기 시 작한 이래, 당사는 30여개의 해양 구조물 공사를 수주, 이 분야에 있어 상당한 경험을 갖게 되 었다. 해양 구조물은 육상 구조물에 비하여 가혹한 환경중에 설치되는 관계로 설계난 제작에 있어 보수적인 경향이 강하다. 다시 말하면, 발주자의 시각에서 본 새로운 설계 개념이나 제작 공법등이 쉽사리 적용되지 않으며, 전통적으로 안전하다고 여겨지는 방법만을 고집하는 경우가 허다한 것이다. 이러한 와중에서도 엔지니어들은 자신들의 경험과 지식을 밑바탕으로 좀더 적 극적 방법을 모색하고자 하였으며 그러한 노력은 오늘날에도 계속되고 있다. 본 고는 해양 구 조물 용접의 일반적 현상에 대하여 기술하고 금후의 나아갈 바에 대하여 고찰코자 한다.

• Strategy21
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• s.45
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• pp.91-115
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• 2019

When compared to land territorial claims, maritime claims have not attracted as much attention from the public as well as the academia. However, after the ICOW (Issue Correlates of War) data was published and was expanded to include maritime and river claims, there have been many quantitative studies that analyze maritime claims or separate different types of territorial claims to explain various mechanisms over different types of territorial claims. These quantitative studies have provided valuable explanations about the onset and the management of maritime claims. This research tries to review these quantitative research. Most studies about maritime claims, especially regarding the management of claims, analyze maritime claims based on two different levels of factors. First, from the perspective of systemic level, several studies focus on the role of international institutions and systemic level of democracy to explain the management of maritime claims. Second, at the dyadic level, many studies explain how the issue salience, past experience, the presence of resources, joint democracy, and relative power influence the occurrence of peaceful settlement attempts or conflictual behaviors over maritime claims. Based on the review of these literature, this research tries to identify several factors to explain the Dokdo issue and to encourage peaceful settlement attempts over the Dokdo issue.

• Journal of the Korean Society for Marine Environment & Energy
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• v.7 no.1
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• pp.22-29
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• 2004

An international project, known as Argo, for collecting data on temperature, salinity and velocity of currents in the world's oceans, has been started in the year 2000 and the full Argo array of approximately 3000 floats will be deployed by 2006. 18 countries deployed 1,023 floats, which are operating in the ocean of the world as of December 2003. In the present study, we tried to predict float distribution and a rate of drifting ashore of the floats after their termination based upon a product of the ocean general circulation model of JAMSTEC (Japan Marine Science and Technology Center). We first evaluated reliability of the model prodilct quantitatively by comparing trajectories of surface buoys of WOCE Surface Velocity Program (SVP) and those predicted by the model surface current field. It is found that the model is acceptable for practical application to deploy floats and to estimate those trajectories. 653 particles at 3-degree spacing are used to investigate the ratio of floats drifted ashore, given that during the first 4 years floats cycle between the surface and 2000m for 10 days and then floats are on just the surface for 100 years. The simulation indicates that about 29% of deployed floats will be drifted ashore within 100-year.

• 월간 기계설비
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• s.231
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• pp.44-54
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• 2009

해외 플랜트 수주액은 지난 2005년 158억달러를 시작으로 지난해 462억까지 최근 몇년간 고성장을 해왔으나 전세계 경제침체 및 국제자금시장의 위축 등으로 하락세로 돌아섰다. 이는 유가 하락에 따른 주요 발주국의 재정 악화, 원자재 가격하락을 활용해 입찰단가를 낮추기 위한 입찰 연기 및 취소 등에 따른 것으로 풀이된다. 전체의 46%를 차지한 중동이 34억달러로 전년보다 54% 감소했고, 아시아, 아프리카 등이 전체 평균을 밑돈 반면 유럽과 미주 지역의 감속폭이 컸다. 그러나 올 하반기에는 글로벌 금융위기의 진정 등 제반 환경 개선으로 얀부 정유프로젝트, 로열더치셸 해양프로젝트 등 그동안 연기됐던 대형 프로젝트 발주가 재개될 것으로 전망됐다. 본지는 해외플랜트 시장을 알아보고 앞으로 회원사들이 해외플랜트 진출 시 고려해야 할 점 등을 알아본다.

• Journal of Information Management
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• v.43 no.3
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• pp.97-115
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• 2012

This paper derives determining factor for the management of oceanographic data in two ways. 1) The type of oceanographic observation and the raw data which were collected from marine physics, marine chemistry, marine biology, marine geology area were analyzed. 2) The services of the KODC(Korea Oceangraphic Data Center), NFRDI(National Fisheries Research & Development Institute), KHOA(Korea Hydrographic and Oceanographic Administration) were analyzed to derive metadata elements for retrieval. After analyze, the 42 deciding factor were derived in the 9 areas (general, Observer, satellites, observation instruments, observatories, space, information, projects, and observational data, data processing).