• Journal of the Korean Society of Marine Environment & Safety
• /
• v.28 no.7
• /
• pp.1140-1147
• /
• 2022

With the development of digital technology, the marine environment is expected to change rapidly. In the case of autonomous vessels, technology is being developed in many countries, and the international community has begun to discuss ways to operate it. Changes in ships cause changes in the marine traffic environment and urge changes to aids to navigation. This study aims to analyze the cyber security management awareness of VTS personnel to improve the cyber security system for aids to navigation. To this end, the current status of cyber security management was reviewed with a focus on VTS, and a survey was conducted on VTS personnel. The survey analysis used the IPA methodology, and as a result of the analysis, a clear difference was observed in the perception of cybersecurity between those with experience in security and those without experience. In addition, technical measures related to cyber-attack detection and blocking should be implemented with the highest priority. The results of this study can be used as basic data for improving the cyber security management system for aids to navigation.

• Journal of the Korean Society of Marine Environment & Safety
• /
• v.26 no.6
• /
• pp.615-623
• /
• 2020

In order to prevent the dangers of major marine accidents, it is very important to be aware of in advance through marine incidents in the background of Heinrich's law, formulated by the safety pioneer who is credited with focusing on workplace safety with emphasis on the human element. At least 11 cases of collision accidents occurred in the Busan VTS area from January 1st to December 31st, 2019, and 24 cases of VTS marine incidents were reported during the same period. According to Heinrich's law, there could be many more potentially risky situations besides the 24 reported cases. In this study, the criteria for VTS marine incidents were established through advanced research and a survey of VTS operators, and analysis of 24 cases of VTS marine incidents in the Busan VTS area. Traffic surveys were conducted for three days to identify potentially hazardous situations. According to the survey, there were 216 cases of VTS marine incidents, and within a year, it is estimated there could be about 26,280 cases. Even if conditions such as "missing VHF communication feedback" which is an important cause of marine incidents, are not reflected, there are many potential risks in the VTS area. Thus, it is vital to strengthen the VTS marine incident reporting system.

• KSCE Journal of Civil and Environmental Engineering Research
• /
• v.39 no.6
• /
• pp.893-901
• /
• 2019

Land development is an essential process to provide lands for housing, industrial, and tourism complex. The development and application of construction automation technology in land development construction are, however, not matured yet. Since land development requires massive investment in terms of cost and effort, the benefits of implementing earthwork construction automation technology could also be enormous. As such, the deployment of advanced technology needs to be assessed. In this paper, by investigating domestic and international advanced earthwork technology, 8 candidate technologies to be developed is derived. These technologies are then prioritized using AHP and web-based survey that distributed to experts in the field of civil and infrastructure. As a result, advanced earthwork fleet management platformization and tele-operation systems for unmanned earthwork are identified as the top priority. Besides through sensitivity analysis, the trends of the technology rank by the weight distribution of the evaluation factor is investigated. Consequently, the research and development processes for the earthwork construction automation technology in land development are explored and based on the results, the research and development road map plan is established.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2012.06a
• /
• pp.507-509
• /
• 2012

IHO has established S-100 Standard profiled from ISO 19100 GIS standards for standardization and improvement of hydrographic data and are developing S-10X Standards. IMO is implementing the e-Navigation strategy for maritime safety and marine environment protection and has established the CMDS as information standard framework which will be developed from the S-100 standard. The development domain of e-Navigation can be divided into onboard, communication network, onshore and VTS is a core actor in onshore system. In this study, we analyzed the effects of S-100 standard development on VTS through e-Navigation strategy of IMO and suggested the cooperation between hydrographic fields and VTS fields under e-Navigation strategy.

• The Journal of the Korea Contents Association
• /
• v.14 no.11
• /
• pp.39-49
• /
• 2014

Cyber threats on the Internet are tremendously increasing and their techniques are also evolving constantly. Intrusion Detection System (IDS) is one of the powerful solutions for detecting and analyzing the cyber attacks in realtime. Most organizations deploy it into their networks and operate it for security monitoring and response service. However, IDS has a fatal problem in that it raises a large number of alerts and most of them are false positives. In order to cope with this problem, many approaches have been proposed for the purpose of automatically identifying whether the IDS alerts are caused by real attacks or not. In this paper, we present an alert verification method based on correlation analysis between vulnerability inspection results for real systems that should be protected and the IDS alerts. In addition, we carry out practical experiments to demonstrate the effectiveness of the proposed verification method using two types of real data, i.e., the IDS alerts and the vulnerability inspection results.

• The Journal of Society for e-Business Studies
• /
• v.17 no.3
• /
• pp.117-128
• /
• 2012

There was a large scale of DDoS(Distributed Denial of Service) attacks mostly targeted at Korean government web sites and cooperations's on March 4, 2010(3.4 DDoS attack) after 7.7 DDoS on July 7, 2009. In these days, anyone can create zombie PCs to attack someone's website with malware development toolkits and farther more improve their knowledge of hacking skills as well as toolkits because it has become easier to obtain these toolkits on line, For that trend, it has been difficult for computer security specialists to counteract DDoS attacks. In this paper, we will introduce an essential control list to prevent malware infection with live forensics techniques after analysis of monitoring network systems and PCs. Hopefully our suggestion of how to coordinate a security monitoring system in this paper will give a good guideline for cooperations who try to build their new systems or to secure their existing systems.

• Journal of the Korean Society for Railway
• /
• v.20 no.4
• /
• pp.558-567
• /
• 2017

This study was conducted to analyze the turnover intentions of railway traffic controllers among employees of a domestic railway corporation. Variables influencing job turnover intention included exploited variables (empowerment, job stress, job satisfaction, organizational commitment, exhaustion) that have been actively studied in other fields. The results showed that the empowerment of railway traffic controllers did not directly affect job stress and turnover intention, but had a direct effect on job satisfaction, organizational commitment, and exhaustion. Job stress did not directly affect job satisfaction, organizational commitment, and exhaustion, and job satisfaction did not directly affect organizational commitment, burnout, and turnover intentions. Burnout has a direct effect on turnover intention, indicating that exhaustion of railroad traffic controllers has an effect on turnover intentions. In conclusion, empowerment has a direct effect on burnout and exhaustion has a direct effect on turnover intention. This study suggests that management of empowerment and exhaustion is important for the prevention of turnover of railway traffic controllers.

• Journal of Navigation and Port Research
• /
• v.32 no.6
• /
• pp.433-438
• /
• 2008

In Gwangyang port, huge reclaiming work and developing harbor facilities are underway to built industrial complexes. So it is estimated that towing barges will increase and make overtaking, head-on, crossing situations with a lot of cargo vessels in narrow passages. And it is possible to cause severe marine accidents inside of the harbor. This paper has a purpose to produce some policies making navigational safety of towing-barge on Gwangyang Hysco temporary passage. So it is considered how the change of marine traffic capacity and the risk factors in passage navigation influence to towing-barge navigation. And also the questionnaire survey of pilots and VTS operator was conducted to find out what they think about the navigational safety of towing-barge incoming and outgoing in No.1 Yulchon industrial complexes.

• Proceedings of the Korean Society of Disaster Information Conference
• /
• 2022.10a
• /
• pp.139-140
• /
• 2022

본 연구는 재난발생 시 현장 상황 판단 및 대응 능력이 현저히 떨어지는 안전취약계층 중 장애인과 노인이 재난정보를 받고 안전하게 대피·대응할 수 있도록 지원하는 시스템의 시범적용에 대한 것이다. 재난정보 전달 및 대피지원 시스템은 재난에 취약한 장애인과 노인이 재난상황에서 각각의 취약 특성을 고려하여 재난 위기상황에 대응하도록 설계 하였으며, 실내 위치측정에 관한 공간정보 표준 및 데이터 구축과 개발한 시스템을 설치하고 구현할 수 있는 실내 공간을 선정하여 시범적으로 적용하였다. 재난정보 및 대피지원 시스템의 시범적용을 위해 선정된 시설의 실내 공간정보 구축 및 현행화를 통해 실내 대피경로를 구축하고, 실제 시범적용을 통해 보완하는 과정을 수행하였다. 장애인·노인 대상 재난정보 전달 및 대피지원 서비스 구축을 위해 실내에서 재난발생 시 재난정보 데이터를 실시간으로 수집하고 스마트폰과 연계할 수 있는 연계 모듈을 개발하였다. 또한 재난정보를 스마트폰에 알릴 수 있는 알람 푸시 모듈, 재난정보 및 대피 안내 모듈과 시각 장애인의 실내 공간 인지를 위한 음성안내 모듈을 개발하였다. 본 연구의 목적은 IoT 기반의 통합관제 기술을 활용하는 서비스 제공을 통해서 정보전달의 사각지대를 해소하고 장애인·노인의 효율적 재난 대응을 위해 맞춤형 재난정보 전달 및 대피지원 서비스를 구축하고 시범적용의 과정을 통해 문제점을 보완하여 최종적으로 재난으로부터 안전취약계층의 안전성을 향상시키는데 목적이 있다.

• Proceedings of the Korean Society for Cognitive Science Conference
• /
• 2002.05a
• /
• pp.137-141
• /
• 2002

한국어 용언의 형태소 정보처리의 특성을 규명하기 위해 피동의 처리 양상을 살펴보았다. 한국어의 피동문은 용언에 파생접사가 붙어 이루어지는 경우와 '-어 지다'와 같이 구문 변형에 의해 이루어지는 경우로 나눌 수 있다. 본 연구에서는 이 중 피동 파생접사 '-이, -히, -리, -기'가 붙은 피동사만을 선정하여 고려대학교에 재학중인 일반인 학생을 대상으로 점화어휘판단 관제를 실시하였다. 실험조건은 표면적 형태와 기능으로 구분하여 4조건으로 설계하였고 SOA는 150msec과 750msec로 나누었다. 실험 결과 피동('어근+파생접사')의 정보처리는 선행연구의 '어간+(시제)선어말어미'의 결과와 유사한 형태를 보였으며, '어간+(연결)어말어미'와는 다른 결과를 보였다. 이런 결과로 미루어보아 어근과 접사는 각각 따로 저장되어 있다기보다는 '어근+접사'의 형태로 심성어휘집에 저장되어 있는 것으로 보인다. 기존의 형태소 분석에서 거론되고 있는 Fullist, Decomposition, Hybrid의 세 가지 모형으로는 한국어 용언의 다양한 표상 및 처리 과정을 설명하기 어려우므로 새로운 모형을 제시하고자 한다.