• Journal of Korean Port Research
• /
• v.12 no.2
• /
• pp.261-268
• /
• 1998

The productivity of port labor in Pusan port is very low and the ratio of port accident is high in comparision with other advanced foreign ports. The aim of this paper is to find why the productivity in Pusan port is much lower than that of other countries in terms of port labor education systems. To obtain the objective of this study, the writers used 163 questionnaire for port labor in BCTOC, PECT and UTC for the survey of training method of cargo equipment handling. The result of this study shows as follows; (1) From the fact that ratio of labor who were trained by KPTI was 2.5%, we could say the public training system of port labor is not operated properly (2) As most of laborers are trained by the experienced associate, they do not recognize how the level of cargo handling equipment is set to increase the productivity. (3) In order that the port public training system plays a good role in port industry, a new license system should be introduced and an expert education system should be developed.

• Proceedings of the KIPE Conference
• /
• 2004.07b
• /
• pp.878-882
• /
• 2004

Position controls are very important in semiconductor manufacturing devices, machine tools precision measuring instruments, etc. In this paper, a novel encoder of digital and analog hybrid type is proposed. It is shown that from this experiment a high-resolution angle measurement device can be designed by a low cost incremental encoder.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2019.10a
• /
• pp.384-387
• /
• 2019

2018년 Meltdown 공격이 발표된 이후 Foreshadow, ZombieLoad 등 다양한 종류의 마이크로아키텍처 기반 부 채널 공격과 방어 기법들이 발표되었다. 그중 Meltdown 공격을 원천 차단할 수 있는 KPTI (Kernel Page Table Isolation)는 커널 영역을 사용자 메모리 영역과 분리하여 커널 정보의 유출을 방어할 수 있으나, 최대 46%의 시스템 성능 저하를 가져온다. 본 연구는 런타임에 시스템콜 발생빈도를 분석하여 낮은 오버헤드로 Meltdown-type 공격을 탐지하고, 방어하는 프로그램을 개발하고 실험하였다. 개발한 Fault Monitoring Tool은 기존 시스템 대비 적은 오버헤드(최대 7%)로 악의적인 사용자를 구분해 내고 방어할 수 있었다.

• 제어로봇시스템학회:학술대회논문집
• /
• 2001.10a
• /
• pp.66.1-66
• /
• 2001

As choosing proper length of boom of container crane according as sort of vessels(18, 22, 24 columns and so on), reinforcing of capacity of DC motor to transport heavy loads, it´s structure being oversized with flexibility and durability, the study is progressing on the automation for convenient operation and effective control. We often cannot but work slowly caused by swaying(pitching, rolling) of vessel. We can get productivity and efficiency by getting over it. The factors of swaying, as fellow; - wave caused by vessels around moving - wind and wave caused by weather change - vessel´s moving by change of load weight - tide - move of vessel According to ...

• Journal of the Korean Society of Marine Environment & Safety
• /
• v.21 no.6
• /
• pp.662-671
• /
• 2015

As the type of Hazardous and Noxious Substances(HNS) becomes various and the transport volume of HNS increases, HNS spill incidents occur frequently on land and the sea. In view of various damages to human lives and properties by HNS spills, it is necessary to educate and train professional personnel in preparation for and response to potential HNS spills. This study shows the current state of response systems and education courses against HNS spill incidents on land and the sea to compare those with each other between land and sea in Korea. Incident command system on land are basically similar to that at sea, but leading authority which is responsible for combating HNS spills at sea is changeable depending on the location of HNS spill, as it were, Korea Coast Guard(KCG) is responsible for urgent response to HNS spill at sea, while municipalities are responsible for the response to HNS drifted ashore. Education courses for HNS responders on land are established at National Fire Service Academy(NFSA), National Institute of Chemical Safety(NICS), etc., and are diverse. Education and training courses for HNS responder at sea are established at Korea Coast Guard Academy(KCGA) and Marine Environment Research & Training Institute(MERTI), and are comparatively simple. Education courses for dangerous cargo handlers who work in port where land is linked to the sea are established at Korea Maritime Dangerous Goods Inspection & Research Institute(KOMDI), Korea Port Training Institute(KPTI) and Korea Institute of Maritime and Fisheries Technology(KIMFT). Through the comparison of education courses for HNS responders between land and sea, some recommendations such as extension of education targets, division of an existing integrated HNS course into two courses composed of operational level and manager level with respective refresh course, on-line cyber course and joint inter-educational institute course in cooperation with other relevant institutes are proposed for the improvement in education courses of KCG and KOEM(Korea Marine Environment Management Corporation) to educate and train professionals for combating HNS spills at sea in Korea.