• 한국정보통신학회논문지
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• 제9권8호
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• pp.1632-1642
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• 2005

항만정보시스템의 기능과 항만유형과는 관련성이 있는 것일까? 본 연구에서는 선진항만들의 유형과 정보시스템 기능 분석을 통하여 관련성을 규명하고자 하였다. 항만들은 자산의 소유와 운영의 주체에 따라 국유제, 공영자치제, 지방자치제(지방정부자치제) 및 사유제의 4가지로 유형으로 구분된다. 유형에 따른 항만들의 주요활동도 달라진다. 국유제와 지방자치제의 경우는 행정처리 기능에 중점을 두고 있는 반면, 공영자치제와 사유제는 고객서비스 강화에 중점을 두고 있다. 항만의 유형과 정보시스템과의 상관관계를 조사한 결과 국유제, 지방자치제 항만에는 업무처리 중심의 시스템이 발달하여 있으며, 사유제 및 공영자치제 항만에는 고객서비스를 최우선으로 하는 커뮤니티 시스템과 e-Business 시스템이 발달되어 있었다. 항만유형별 정보시스템의 차이는 부산항만정보시스템의 개선에 시사점을 던져주고 있다. 그동안 국유제 항만으로서 운영되던 부산항이 공영자치제 유형의 운영방식으로 변경됨에 따라 항만정보시스템도 추세에 따라 개선되어야 한다. 본 연구에서 제안하는 방법으로 3단계 방법을 제안하였다. 제 1단계가 미러링(Mirroring) 단계로서 항만운영을 안정화시키는 단계이며, 제 2단계에서는 커뮤니티 시스템을 구축하여 고객의 서비스를 제고시키는 협업화 단계로 설정하였으며, 제 3단계는 부가가치창출을 위한 수익형 시스템을 개발하는 e-Business 개발단계로 설정하였다.

• 해양환경안전학회지
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• 제7권3호
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• pp.93-106
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• 2001

Whether a ship is sub-standard or not shall be finally decided by the minimum standards laid down in international conventions or national standards having the same effects. The flag State is primarily responsible for implementing these standards as far as its own ships are concerned. And the port State shall, in the exercise of its rights under international law, take appropriate measures (including detention of ships identified as sub-standard), which are regarded as port State's supplementary role aiming at implementing these standards. The international standards are implemented by the regional co-operation in the form of the MOU(Memorandum of Understanding) on Port State Control in the Asia-Pacific Region on the ground that the PSC enforcement of only one country does not enable the eradication of sub-standard ships. Recently, EQUASIS which is an international database covering the whole world fleet change the regionalism of PSC into the globalization of PSC. However, there are many problems in Tokyo MOV and Korean PSC regime. In order to ensure the implementation of the standards laid down in international conventions and Tokyo MOU, the Korean and other country in Asia-Pacific shall settle the alienation from the actuality of the law, namely the problem of maritime administrative structure of non unifying PSC affairs.

• 한국항해항만학회지
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• 제27권3호
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• pp.321-327
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• 2003

The Memorandum of Understanding (MOU) is the document of intent signed between the Port States Control(PSC) to undertake a uniform as agreed. Though the MOU is not a legally binding, in case where the agreed items are violated without a just cause, the denunciation will follow. International Maritime Organization (IMO) and regional MOUs have been making amendments and reinforcing the relevant requirements, so that port State Authorities can effectively eradicate the substandard vessels. However, the various problems have arisen due to the existence of different requirements of each MOU, the lack of information exchange between each MOU, the lack of uniform PSC implementation within the same MOU and the lack of adequate system due to the short history of MOUs. In this paper, the MOU records for three years (1999∼2001) were analyzed according to each MOU, type of ship, deficiency code, classification society, the number of inspected ships and the number of detained ships to assess the problems (Statistics during 2002 will be published after August 2003). The purpose of this study is to help better understand the PSC activities within each MOU and to establish effective countermeasures by grasping the problems that exist in the PSC at present.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2014년도 춘계학술대회
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• pp.63-64
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• 2014

2014년 1월부터 아 태지역 Tokyo-MOU에서는 새로운 점검체제인 NIR를 도입하여 항만국통제(PSC)를 시행하고 있다. NIR의 가장 큰 특징은 기존 TF방식과 달리 회사의 안전관리수준까지 평가하여 선박의 위험도 수준을 고위험, 표준위험, 저위험 선박 등 3단계로 분류하고 그 수준에 따라 PSC 점검주기를 달리하는 것이다. 특히, 국제안전경영(ISM)코드의 안전관리체제(SMS)와 관련된 결함과 6개이상의 결함수, 출항정지이력 등은 선박의 위험도수준 평가에 큰 영향을 미치게 되었다.

• 한국항해항만학회지
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• 제32권10호
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• pp.851-856
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• 2008

대규모 컨테이너항만의 건설과 함께 컨테이너 크레인의 생산성 향상으로 선박 체항시간을 단축시켜 항만의 서비스 수준을 높이려는 노력이 가속화되고 있다. 컨테이너 크레인 시스템에 가해지는 입력에 대하여 바람직한 성능을 보이도록 설계사양을 고려한 상태 퍼드백 제어시스템을 사용한다. 컨테이너 크레인에서 측정이 까다롭거나 측정 잡음이 클 것으로 예상되는 상태 변수를 추정하는 방법으로 상태 관측기를 설계하고자 한다. 기존의 연구에서는 상태 피드백 제어시스템의 피드백 이득행렬과 상태 관측기 이득행렬을 분리하여 구하였다. 그러나 본 연구에서는 피드백 이득행렬과 상태 관측기 이득행렬을 선정함에 있어 최근 강인한 탐색법으로 많이 사용되는 REGAs를 사용해 설계사양을 만족하도록 동시에 구하고자 한다.

• International Journal of Automotive Technology
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• 제5권1호
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• pp.9-16
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• 2004

An experimental study was carried out to characterize the spray atomization process of micro-machined port fuel injectors with a piezoelectric atomization device, which can generate pressure pulsations through vibration of a piezoelectric transducer. In this study, several types of micro-machined arrays such as 30∼200-microns of hole arrays were tested. Both a dual-stream and a central-port injectors with micro-machined arrays were tested and compared with normal port fuel injectors. The spray visualization was conducted to characterize overall spray structure and phase Doppler particle analyzer (PDPA) system was used to quantify the droplet size and velocity. In addition, the pressure history was recorded by using digitized signal from pressure transducer. The results showed that modulation is effective to the spray atomization for tested injectors and atomization performance depends on injector design factors, orifice sizes, and frequency and power of the modulator. A number of resonance frequencies of the modulator was modified by injector parameters and temperature. In addition, our results suggested that design of sufficient space among holes is critical to avoid droplet coalescence in the multi-hole micro-machined injectors.

• 한국해양공학회지
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• 제30권3호
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• pp.177-185
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• 2016

In this study, the model developed by Hong (2012) was modified to describe the consecutive docking/undocking situation and was also applied to investigate the effect on seawater circulation in Busan port by consecutive docking/undocking at the connecting bridge of Busan port. Numerical experiments for various docking/undocking cases were performed by dumping the initial concentration within Busan Port and indicated that the concentration in Busan port becomes steady state without numerical wiggles after sufficient time (at least 20 or 30 days). In addition, it was found that the seawater circulation under ship docking was slightly reduced in comparison with that under ship undocking, and the approach time to the target concentration under all the docking cases increased in comparison with the undocking case.

• 한국항해항만학회지
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• 제34권6호
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• pp.471-477
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• 2010

최근 IMO에서는 항만국통제 우선점검 평가에 해양사고율을 평가항목에 추가로 포함하는 것에 대해 검토하고 있다. 본 연구는 절대 평가법을 이용한 항만국통제 우선점검을 위한 대상선박 선정법을 제안하였다. 이를 위해 항만국통제 우선점검 평가의 단점을 보완하고 합리적인 평가법으로 널리 알려진 절대평가법을 이용하였다. 또한 이 방법과 기존 도쿄MOU의 평가방법을 10척에 윌콕슨 검정으로 비교하여 유효성을 확인하였으며, 평가항목의 평가치를 변경하는 실험을 통해 PSC 우선점검 순위변동을 조사하였다. 그 결과 출항정지, 선령, 해양사고 등 평가항목의 가중치가 높은 평가치가 순위변동에 영향이 큰 것으로 나타나 이 항목들을 중점 관리하여 PSC를 예방할 필요가 있다는 점이 확인되었다.

• 한국항해학회지
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• 제23권4호
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• pp.43-61
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• 1999

To ensure ship's safety and preserve the marine environment from ship, IMO(International Maritime Organization) has been making much efforts. Nevertheless there are still many possibilities threatening ship's safety and the marine environment. Many vessels navigate at sea in lack of standard required by the International Convention relevant to ship's safety and the protection of marine environment. Even though the administration is responsible for perfect and continuous control for safety of ship, it cannot has jurisdiction over ships hoist its flag reasonably at all times. So the Port State has strengthened the Port State Control(PSC) activity as one step of eliminating sub-standard vessels. In the light of the fact that mentioned above, this study deals with PSC activity in Korea and port of Pusan. Total 582 ships, inspected in port of Pusan from 1st January 1998 to 30th September 1999, were analyzed in various aspect and extracted results as follows : \circled1 The inspection rate in Korea was much lower than the other states taking part in Tokyo MOU, \circled2 For flag state, the ships belong to flag of convenience(FOC) had much more deficiencies than non-convenience flag ships, \circled3 For ship type, 39 number of general dry cargo ship were detained at Pusan with serious deficiencies, \circled4 For deficiency item, the items such as life saving appliances, safety in general, navigation, load lines and fire-fighting appliances were occupied over 71.7% of total number of deficiencies, \circled5 In Asia-Pacific region, Korea was one of flags with detention percentages exceeding 3-year(1996~1998) rolling average detention percentage. Average detention rate of Korean vessels was 6.73% which was over 0.24% of average detention rate(6.49%) in Asia-Pacific region. These results may reflect to improve the performance of PSC inspection for foreign vessels and are useful for preparing PSC inspection for ocean-going ships registered in Korea.

• 한국마린엔지니어링학회:학술대회논문집
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• 한국마린엔지니어링학회 2005년도 후기학술대회논문집
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• pp.108-109
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• 2005

The aim of Port State Control(PSC) system is recognized as a proficient mechanism in preventing coastal traffic accident and protecting marine environment. Recently, PSC system is focused on human factor of International Maritime Convention, especially ILO and STCW Convention by considering many accidents resulted from human factor. Therefore, we have to understand of Consolidated Maritime Labour Convention which describes employment conditions and social welfare policy, the rights about the lowest wages, the overdue wages, the unemployment protection. a disaster reward, etc and STCW Convention which describes standards of training, certification and watchkeeping for seafarers. The aim of this study is to recognize inspection points about human factor of these Conventions. .