• Journal of information and communication convergence engineering
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• 제1권4호
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• pp.183-188
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• 2003

The $4^{th}$ generation mobile communications, through several radio access networks such as WLAN, Bluetooth, UMTS, GPRS, CDMA 1X, and IMT-2000 in the same area offering different type of coverage, will support interactive multimedia services in additions to wider bandwidths, higher bit rates, and service portability. Regardless of various radio access networks, they will also support robust security mechanisms, as well as seamless mobility and common authentication. In this paper, we give an overview of WLAN security and examine its security problems. We also explain the enhanced security schemes, such as port-based authentication, EAP, and IEEE 802.1X. For secure wireless communications, several possible security solutions are offered and evaluated in various respects to improve WLAN security. This paper will make a contribution to provide more secure wireless communications to cellular operators embracing WLAN technology as a means to generate new revenues based on data services.

• 한국방재안전학회논문집
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• 제15권4호
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• pp.57-69
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• 2022

2011년부터 2021년까지 10년 동안 항만 작업 중 숨지거나 다친 사람이 무려 2,800명에 달한다. 그중에서도 항만하역사업장에서 발생하는 빈도수가 높다. 컨테이너 터미널 사업자는 법령에 따라 위험성평가를 실시하고 합리적인 안전대책을 수립하여야 한다. 연구방법으로는 문헌분석을 통하여 산업안전보건법, 중대재해처벌법, 항만안전특별법에서 제시하는 위험성평가에 대한 내용을 제시한다. 본 연구에서는 기존 선행연구를 분석하여 컨테이너터미널의 위험성평가방법 및 유해위험요인을 살펴본다. 이러한 안전사고 위험을 개선할 수 있는 '산업안전 AI 챗봇기술'을 제시하는데 목적이 있다.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회/대한산업공학회 2005년도 춘계공동학술대회 발표논문
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• pp.592-598
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• 2005

The port, differently from general working places, is a closed area required for security, customs, and quarantine procedures. The loading and unloading is being done differently by ports, cargoes, and ships. To do loading and unloading, a lot of equipment and different types of labor are required, which flow is complicated and safe management is essential. As above mentioned the port is very unique and very deteriorated working place in its working environment. The purpose of this study is to propose ways to reduce and prevent from port accidents. As first step to do this, we have collected 923 accidents happened at Incheon Port during the period of 1994 to 2003. We have thoroughly analyzed characteristics, harmfulness, and risk of the loading/unloading they have done, as well as the accident frequency and relationship between the accidents. As second step to further analyze, We have employed DMAIC technology, an advanced process of 6 sigma presently in spotlight as the best program for management innovation. This analysis results in recognition of important accident characteristics, causes and effects analysis, critical causes of accident, and suggestions to decrease accidents.

• 한국항해항만학회지
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• 제38권6호
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• pp.673-681
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• 2014

Due to the increased demand for safety and security requirements on the port infrastructure, the harbor tranquility is one of the important parameter in the mooring basin of harbor. It relates keenly to berthing/unberthing and cargo handling works but also it is an important indicator to get the minimum water area as the safe refuge. Hupo harbor is a national coastal harbor located in east coast of Korea and a development plan for a new marina near the entrance is being carried out including berth layouts, breakwater extensions, 300m marina berths, dredging and land reclamation works. The new plan will impact on calmness of the existing port. Therefore, it is necessary to analyze in complex the variation of wave height and direction caused by wave refraction, diffraction, shoaling and reflection from the incident waves from outside the harbor. In order to check the calmness inside a harbor, the numerical models are being used currently need fundamental reviews according to the difference of results which depend on their respective features. In this study, hence, it was introduced the validity of numerical models by comparing the computational results with the hydraulic model experiment. The current investigations contribute to the existing development recommendations and provide further solutions for port planning.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2022년도 추계학술대회
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• pp.147-148
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• 2022

최근 선박 접안 시 사고가 다수 발생함에 따라, 항만 내 선박운항에 대한 안전조치에 대한 필요성이 강조되고 있다. 본 연구는 부산신항만 내 안전조치에 대한 내용을 정량적으로 분석하고자 선박 항적 데이터를 수집하고, 이를 바탕으로 해사인공지능 알고리즘을 적용여 항적패턴을 분석하였다. 그 결과, 부산신항 입출항선박의 변침 지점을 도출하고, 선속·침로의 운용패턴을 제안하였다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 제36회 하계학술대회 논문집 D
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• pp.2741-2743
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• 2005

In this paper, Elevator is designed for real time security & management. Security & Management System is designed for wireless communication between an Elevator and an manager, between Elevation and an manager. Also, to have remote control capability, embedded system platform with TCP/IP techniques are applied to process control system with independent open structure for the precise data transmission and without constraint of operating system. Security and Management system is designed to solve problem of network port by Bluetooth module. Moved recording, unworked table, life of device and replacement time of device are made database, database is applied to Fuzzy Rule for pre-detection unworked Elevator. Security & Management system is designed safety and convenience for customers using Elevator as well as rapidly treatment with unworked Elevator.

• 산업기술연구
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• 제22권B호
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• pp.141-146
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• 2002

It becomes common to use computers to control electronic devices and security facilities in newly constructed buildings and house. There are many home application devices in the market which can be controlled by computers. But they are expensive and managed by specialized companies. This paper is focused on personal computers which are available in most homes and can be used to control home electronic appliances and home security facilities. We implemented a home automation server based on Linux. The standard parallel port of personal computer is used to connect sensors and actuators. Therefore, the cost of the server is very low. Moreover, the server is connected to Internet and anywhere we can control and monitor the home security facilities and home automation systems.

• 대한안전경영과학회지
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• 제13권2호
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• pp.219-229
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• 2011

A empirical study about dual commitment of members of labor union for logistics companies based around the capital for their companies and union was carried out. This paper reviewed the effects of job security, organizational justice and social capital on dual commitment, and the mediating effect of social capital between job security and organizational justice, and dual commitment. Also, by establishing the social capital as a mediating variable, whether the effects of job security and organization justice to dual commitment exhibit mediating effects was identified.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2020년도 추계학술발표대회
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• pp.327-330
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• 2020

자전거를 이용해 출퇴근하는 항만 근로자들은 대형화물이 만들어낸 포트홀과 같은 파손된 도로에 의해 위협받는다. 이러한 문제를 해결하기 위해 센서와 카메라로 파손 도로를 탐지하는 디바이스를 구상하였다.

• 한국정보기술학회 영문논문지
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• 제9권1호
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• pp.1-10
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• 2019

In recent years, information collection of attacks through stealth port scanning technology has become more sophisticated. The most commonly used Nmap port scanner supports a variety of stealth scanning technologies along with the existing scanning techniques. Nmap also supports Idle scan that is different from conventional stealth scans. This is a more sophisticated stealth scan technique by applying the SYN scan and ACK scan techniques. In previous studies, the detection of Idle scanning was on zombie system, but was not on victim system. In this paper, we propose an effective detection method of Idle scan on victim system. The Idle scanning is composed of two stages; they are probing the zombie and victim system and scanning the victim system. We analyzed the characteristics of the two stages. The characteristics, we captured, are that SYN and RST packets are different from normal packet. We applied them to detection method, then Idle scanning is detected effectively.