• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2023.05a
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• pp.306-308
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• 2023

IHO S-100(범용 수로 데이터 모델)은 차세대 전자해도 뿐만 아니라 수로 분야, 해사 분야, GIS 커뮤니티에서 필요로 하는 전자적 제품 개발을 위한 데이터 프레임워크를 제공하는 표준이다. 또한, S-100의 보안 영역(Part 15)은 기본적인 보안 이론을 명시하고 사용을 권장하고 있다. 본 논문에서는 S-100과 SECOM을 기반으로 서비스별 보안 적용이 된 시뮬레이션을 명시하였으며 각 서비스별 사용자 인증 절차 및 관리체계에 대하여 정의한다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.23 no.5
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• pp.21-27
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• 2023

As a means of helping ships navigate safely, navigational aids in operation in the maritime envirionment require periodic management, and due to the nature of the environment, it is difficult to visually check the exact state. As a result, the smart navigation aid system, which improves route safety and operational efficiency, utillizes expertise including sensors, communications, and information technology, unlike general route markings. The communication environment of the smart navigation aid system, which aims to ensure the safety of the navigators operating the ship and the safety of the ship, uses a wireless communication network in accordance with the marine environment. The ship collects the information necessary for the maritime environment on the land and operates. In this process, there is a need to consider the wireless communication security guideline. Basically, based on IHO S-100 a standard for facilitating data exchange and SECOM, which provides an interface for safe communication. This paper research a security system for safe communication in a maritime environment. The security system for the basic interface based on the document was presented, and there were some vulnerabillties to data exchange due to the wireless communication characteristics of the maritime environment, and the user authetication part was added considering the vulnerability that unauthorized users can access the service.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.06a
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• pp.98-99
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• 2022

해양 산업은 e-Navigation 시스템을 시작으로 체계적인 접근 방식과 다양한 전략을 바탕으로 다양한 해양 서비스를 제공하고 있으며, 서비스 운영에 필수적인 장비 개발 및 스마트 항로표지 서버 구축 등 통합 운영이 가능한 스마트 항만 구축을 목표로 나아가고 있다. 그러나 고도로 자동화된 스마트 항만의 자율 시스템을 검증하기 위한 테스트베드는 기존의 테스트베드와 달리 복잡한 접근 방식과 다양한 요소가 필요하며, 특히 인공지능 등 최첨단 디지털 기술이 적용할 수 있게 됨에 따라 신규 서비스 제공과 이에 따른 잠재적으로 발생이 가능한 치명적인 문제점을 조기에 발견하고 대응하기 위하여 사이버보안체계 연구 및 이를 검증할 테스트베드 구축에 대한 준비가 필요한 시점이다.

• Journal of IKEEE
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• v.2 no.2 s.3
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• pp.225-232
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• 1998

Currently NTSC, PAL, and SECOM are widely used for TV broadcasting systems. In Korea, NTSC has been used to reduce transmission bandwidth and broadband flickers using the Interlaced scanning method. Image data in the Interlaced scanning method require De-interlacing compensation for PC-based multimedia applications. The existing compensation algorithms such as ZOI, FOI, and ELA provieds simple computations and effective image compensation while the PSNR is low and horizontal and vertical edges are hardly detected. In this paper, the ADI(Adaptive De-Interlacing) algorithm that can increase PSNR and detect horizontal and vertical edges is proposed and a hardware system is implemented using three ACTEL 1020B FPGA chips. The system consists of the algorithm part implemented using two FPGAs and the memory control part implemented using rest one. Also the system operation is investigated for real time processing.

• Convergence Security Journal
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• v.16 no.6_2
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• pp.43-51
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• 2016

In the 1980s, private security was established in the framework of institutional framework with the Security Industry Act which was enacted in 1976. The agents who brought in the development of the private sector in 1980 enjoyed a boom in the global economy, affected by its high-flying dollar value, low international interest rate, low oil prices, and the blooming economy. In addition, the semiconductor, computers and communications equipment that was promoted in accordance with the e-Literacy plan were raised. Following the economic development of various events such as Seoul International Trade Fair, "86 Asian Games," and "88 Seoul Olympic Games," private security expenses were enhanced by increasing awareness of civilian expenses. Also, in the 1980s, Korean investment in foreign companies, including Japan's Secom, or Korean technology, brought many changes to the private security. Meanwhile, the cost of security, which has been centered around human expenses, has brought about the era of mechanized spending, or machine security expenses. The purpose of this study is to systematically analyze the social environment surrounding the private security in the 1980s and systematically analyze the important factors that contribute to private security.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.28 no.4D
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• pp.469-476
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• 2008

Recently, TOD gains popularity as a traffic solution measure of high density urban regeneration projects. The purpose of this study is to investigate traffic impacts of high density TOD projects, and to identify the issues to be resolved. For a case study, it chooses Gangnamgucheong station in Gangnam area served by two subway lines, and designates 400m radius from the station as a site for high-density development. The MOEs chosen for this study is traffic volume, time, distance, speed, and mode share. The SECOM model is adopted for traffic simulation. The analysis results show that high-density TOD is an effective tool for traffic improvement even with only one station area being implemented. It is found that the traffic volume increases near the station in nature where high-density development occurs, but it declines overall in the rest of Gangam area. The total travel time and distance of passenger vehicles decline, meaning that the traffic condition becomes better than before. With regulation on parking supply, the improvement becomes more vivid. In terms of the changes of traffic speed, both alternatives show 4.1% increase in speed, but the difference between alternatives is not quite noticeable because of the induced vehicle demand driven to the streets with improved traffic condition. The mode share changes occur for the benefit of subway ridership, because the study station is equipped with two subway line services. When mixed with parking supply restriction, the impact becomes clearer.