• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2012.06a
• /
• pp.41-43
• /
• 2012

E-Navigation 아키텍쳐 상세화 과정에서 이용자 요구사항은 안전항해 기능정의 레벨과 사용자 요구서비스 상세화 레벨로 나누어 입력된다. 본 연구는 연안해역에서 선박안전 항해를 지원하기 위하여 필요한 기본정보 및 서비스 레벨에서 정보를 도출하는데 목적이 있다. 도선사, 선장 및 VTS 운영자, 해양경찰청에 근무하는 항해경험이 풍부한 전문가를 대상으로 설문을 행하고 그 결과는 해양기상 및 해상상태 정보, 상황인식 및 충돌방지를 위한 정보로 나누어 정리하였다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2022.11a
• /
• pp.233-235
• /
• 2022

43차 산업혁명이 도래함에 따라 해운분야에도 자동화 및 무인화 기술을 접목한 안정성과 효율성을 향상시키기 위한 기술개발이 진행중이다. 그중 선박의 신속하고 안전한 이/접안을 돕도록 고안된 자동계류시스템은 선박의 식별 정보와 융합센서로부터 다양한 정보를 수집해 인력의 개입이 최소화하거나 무인화할 수 있으며, 이는 계류 라인을 이용한 기존 방법 대비 발생하는 위험 요소를 줄이고 효율적인 도선 지원이 가능하게 한다. 본 연구팀은 기초단계 연구로서 자율 운항 선박 구현을 위한 자동 계류 시스템 개념 설계를 제시한다. 연구내용은 크게 자동 계류시스템의 하드웨어 설계, 제어 및 운용 프로세스 설계, 선체 계측 기술 개발, 운동변위/계류력 산정 수치모델 개발, 항만 내 운영환경 및 시나리오 분석으로 분류할 수 있으며 본 발표에서는 연구현황과 추후 진행 방향에 대해 다루도록 한다.

• Journal of Navigation and Port Research
• /
• v.33 no.1
• /
• pp.21-25
• /
• 2009

The ship without thrusters and special propulsion system is supported by the tug boats during berthing and unberthing. The orders to tug boats are made by a pilot. If the positions of ship, tug boats and port are displayed in 2D map, it will be helpful to pilots. In this research, a network-based pilot supporting system(NPSS) has been conceptually designed NPSS, necessary for safe and efficient pilot, has two main functions. One is the monitoring of the situation of berthing and unberthing. And the other is the automatic calculation of the tug forces considering environmental conditions. The NPSS is designed on the basis of network system around the harbor. The NPSS will be validated using ship-handling simulator in the future.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2017.10a
• /
• pp.274-276
• /
• 2017

Korean e-Navigation is a system that introduced to reduce maritime accidents. In order to reduce marine accidents, Korean e-Navigation provides the following services-"Vulnerable Vessel Monitoring", "Vulnerable Vessel support & monitoring", "Optimal safety route", "ENC Streaming for Small Vessel", "Tug & Barge Support", "Maritime Safety Information Providing". Each Service is a system separated into finctional units and integrated into Korean e-Navigation. Korean e-Navigation is introducing data middleware to integrate each service and the DDS(Data Distribution Service) is judged to be effective. Thus, this paper analyzed the characteristics of DDS middleware types suitable for each service of e-Navigation.

• Journal of muscle and joint health
• /
• v.29 no.2
• /
• pp.133-140
• /
• 2022

Purpose: This study was to examine the effects of auricular acupressure on competitive state anxiety and the accuracy of breaking in taekwondo players. Methods: This study was a quasi-experimental study with a time-series design. Twenty-two taekwondo breaking players were assigned to the control group for the first two weeks and then assigned to the experimental group for the next two weeks. Anxiety was measured by the revised Competitive State Anxiety Inventory-2 and the accuracy of breaking was measured as a percentage of breaking the wooden board. Results: Auricular acupressure for two weeks significantly increased the accuracy of breaking from 80.83±7.99% to 90.92±7.57% (t=7.74, p<.001). Auricular acupressure for two weeks significantly increased anxiety from 35.66±10.36 to 50.64±7.45 (t=4.38, p<.001). Among three subtypes of competitive state anxiety, somatic anxiety was increased from 12.48±4.97 to 22.95±4.54 (t=2.09, p=.011). Cognitive anxiety was significantly increased from 10.11±3.96 to 14.68±3.89 (t=5.37, p<.001) but self-confidence was not changed. Conclusion: The results of this study showed that auricular acupressure was effective in increasing the accuracy of breaking in taekwondo players.

• The Journal of the Korea institute of electronic communication sciences
• /
• v.18 no.1
• /
• pp.143-148
• /
• 2023

Currently, pilots and tugs perform the function of minimizing or eliminating property damage by preventing accidents on ships, ports, and human life by supporting docking/unloading and access and departure of ships. The piloting/tuging system is an essential function for the smooth functioning of the port, and it is the system that has the greatest influence on the cargo volume of the port. In this study, we developed an pilot and tugs information system analysis and operating system that can improve port operation efficiency, reduce the waiting time of ships, optimize the operation of ships, and allocate optimal pilots and tugs by utilizing the operation information of the tugbosts.

• Journal of Navigation and Port Research
• /
• v.44 no.6
• /
• pp.494-500
• /
• 2020

Maneuvering vessels in the harbor is an interesting problem in marine cybernetics. The vessel, operated by the pilot and moving very slowly in shallow water, usually is assisted by thrusters, the main propulsion system, and tugboats. In this paper, we suggest a new vessel berthing technique using dampers (cylinder-type fenders) and a system of winches for complex and dangerous berthing situations. We found that control of the fender stroke and rope tension enabled a safe and quick berthing process. The effectiveness and usefulness of this berthing system was verified using a ship of about 2,000 tons.

• Journal of Korea Port Economic Association
• /
• v.32 no.4
• /
• pp.149-163
• /
• 2016

Seafarers are an essential resource in maritime industries, which provide navigation skills, vessel maneuvering skills and fishing skills in the fishery industry. They also work as a driving force in pilotage, port operation, vessel traffic service, and marine safety. Other areas in maritime services, which rely on seafarer include safety management of ships, supervisory activities, and maritime accident assessment. In these ways, Korean seafarers have contributed to the growth of Korean economy. However, there have been issues of high separation rate, shortage of supply, multi-nationality, multiplicity of culture caused by employment of foreign seafarers, and aging. The present paper finds that maritime officers and fishery officers demonstrate differences in the statistics of on-board job taking and separation: the separation rate of fishery officers is higher than that of maritime officers. The existing data and statistics by the Korea Seafarer's Welfare & Employment Center could be improved by changing its structure from time series to panel data. The Korea Seafarer's Welfare & Employment Center is the ideal institution for collecting the panel data, as it has already accumulated and published relevant statistics regarding seafarer. The basic design method of the panel data is to adopt and improve it by including the information on ratings of maritime and fishery industries, ranks in a ship, personal information, family life, and career goal. Panel data are useful in short- and long-term forecasts of supply of Korean seafarers; demand evaluation of education, training, and reeducation of the seafarers; demographical dynamic analysis on Korean seafarers; inducement policy of long-term on board job taking in harmony with man-power demands in marine industries such as pilotage service; implementation of job attractiveness policy on Korean seafarers; and employment stabilization of Korean seafarers.