• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2005년도 춘계학술대회 논문집
• /
• pp.1165-1171
• /
• 2005

After 1974 an EMU, which is the first line opened, the car's term of endurance is introduced, End of life on the step, gradually the rate of cars out of service are increasing. In the country, we consider about recycled source, aspects of social economic of cars out of service and so on, treat efficiently and reasonable. According to research first we make investigations about the present situation and the actual condition of cars out of service then we should lay out schemes efficiently.

• Journal of Multimedia Information System
• /
• 제9권1호
• /
• pp.11-20
• /
• 2022

In this paper, we have recently created self-driving cars and self-parking systems in human-friendly cars that can provide high safety and high convenience functions by recognizing the internal and external situations of automobiles in real time by incorporating next-generation electronics, information communication, and function control technologies. And with the development of connected cars, the ITS (Intelligent Transportation Systems) market is expected to grow rapidly. Intelligent Transportation System (ITS) is an intelligent transportation system that incorporates technologies such as electronics, information, communication, and control into the transportation system, and aims to implement a next-generation transportation system suitable for the information society. By combining the technologies of connected cars and Internet of Things with software features and operating systems, future cars will serve as a service platform to connect the surrounding infrastructure on their own. This study creates a research methodology based on the Enhanced Security Model in Self-Driving Cars model. As for the types of attacks, Availability Attack, Man in the Middle Attack, Imperial Password Use, and Use Inclusive Access Control attack defense methodology are used. Along with the commercialization of 5G, various service models using advanced technologies such as autonomous vehicles, traffic information sharing systems using IoT, and AI-based mobility services are also appearing, and the growth of smart transportation is accelerating. Therefore, research was conducted to defend against hacking based on vulnerabilities of smart cars based on artificial intelligence blockchain.

• Journal of Multimedia Information System
• /
• 제9권1호
• /
• pp.33-42
• /
• 2022

In this paper, we have recently created self-driving cars and self-parking systems in human-friendly cars that can provide high safety and high convenience functions by recognizing the internal and external situations of automobiles in real time by incorporating next-generation electronics, information communication, and function control technologies. And with the development of connected cars, the ITS (Intelligent Transportation Systems) market is expected to grow rapidly. Intelligent Transportation System (ITS) is an intelligent transportation system that incorporates technologies such as electronics, information, communication, and control into the transportation system, and aims to implement a next-generation transportation system suitable for the information society. By combining the technologies of connected cars and Internet of Things with software features and operating systems, future cars will serve as a service platform to connect the surrounding infrastructure on their own. This study creates a research methodology based on the Enhanced Security Model in Self-Driving Cars model. As for the types of attacks, Availability Attack, Man in the Middle Attack, Imperial Password Use, and Use Inclusive Access Control attack defense methodology are used. Along with the commercialization of 5G, various service models using advanced technologies such as autonomous vehicles, traffic information sharing systems using IoT, and AI-based mobility services are also appearing, and the growth of smart transportation is accelerating. Therefore, research was conducted to defend against hacking based on vulnerabilities of smart cars based on artificial intelligence blockchain.

• 한국컴퓨터정보학회논문지
• /
• 제15권1호
• /
• pp.51-59
• /
• 2010

아파트단지, 대형 빌딩, 마트 또는 백화점에는 많은 차량을 수용할 수 있는 실내 주차장이 구비되어 있으나, 운전자는 혼잡한 주차장에서 빈 주차구역을 찾기 위해 상당한 시간을 낭비하고 있다. 본 연구에서는 운전자가 혼잡한 주차장에서 현황모니터를 통해 빈 주차공간을 찾기 위해 배회하는 시간을 줄이고, 주차된 차량의 위치를 찾기 쉽도록 SMS(Short Message Service)를제공하는마이크로프로세서기반의실내주차정보제공시스템을제안한다. 제안시스템은 차량 출입 검출용 RFID(Radio-Frequency IDentification) 시스템, 주차면의 차량유무 관련 정보처리 및 서버와의 통신 등의 기능을 갖춘 마이크로프로세서 시스템, 진출입 차량의 정보처리와 운전자에게 빈 주차공간 및 주차정보를 안내하는 서버 시스템으로 구성하였다. 수작업으로 제작한 8대 규모의 모형주차장에 제안 시스템을 구현하였으며, 주차 현황 모니터와 유료 문자메시지 서비스로 운전자에게 정보를 제공함으로써 실용성을 확인하였다.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2005년도 춘계학술대회 논문집
• /
• pp.257-262
• /
• 2005

Sleeping cars mean railroad cars which are equipped with facilities available business, travel, rest, sleep for long distance travel. Domestic sleeping cars , as the concept of ‘night train’, provide passenger who travel at night with simple berth . German, Japanese, American sleeping cars are classified with sleeping car, coach car, seat car or first class, standard class, family room, room for the handicapped, which offer not only sleep but various facilities and service such as snack, reading, available shower for daytime travel. Accordingly, through the analyzing spatial factor of domestic and foreign sleeping cars, we first should abstract the demand for fundamental design to enhance our passenger's comfort. And then we should try to improve the quality of travel culture by offering it passenger.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2002년도 추계학술대회 논문집(I)
• /
• pp.31-37
• /
• 2002

Rail cars are subject to vibration, impact and wear which can cause severe defects leading to a fatal accident. Thus, they are designed and manufactured in consideration of such factors influencing their service lifetime. Under-frames are composed of steel and support most of load imposed on the car. Steel is very sensitive to corrosive environment and corroded even in a normal service condition. Regular maintenance can Protect steel Parts from corrosion by painting. However, an exposure of defect point to corrosive agents can make corrosion proceed to a considerable depth, which may cause the structure to remain under safety standard. It is necessary to understand corrosion behavior of rail cars in order to estimate unexpected accidents by corrosion.

• 대한지리학회지
• /
• 제36권1호
• /
• pp.52-65
• /
• 2001

1985-1997년 사이에 자가용 승용차는 소득수준이 높고 서비스업이 발달한 서울.부산.대수시 등 대도시등 서울시의 위성도시에서 보급이 먼저 이루어지고 점차 공업도시와 지상 중심도시로 확산하는 한편, 대도시에서의 보급률 증가는 둔화되었다. 이와 같은 현상은 1985년과 1991년 모두 금융, 보험, 부동산 및 사업 서비스업 종사율이 가장 크게 영향을 주었다 1997년에는 농업, 수렵업, 임업 및 어업 종사율이 새롭게 가장 큰 영향력을 미쳤다. 자가용 승용차 보급의 시.공간적 분포패턴은 1991년을 기준으로, 1985-1990년은 서울시나 그 위성도시 및 지방 중심도시에서 보급률이 높았고 보급률의 지역간 격차가 켰던 시기이며, 1991-1997년은 지역적 보급이 평준화되면서 수도권지역 및 지방 주요 도시에 보급률이 높았던 시기이다. 자가용 보급 지역 유형의 결정에 영향을 미친 중요한 요인은 대도시에서는 서비스업 종사율과 소득이, 군 지역에서의 서울시로부터의 거리와 인구규모이다.

• 한국통신학회논문지
• /
• 제33권8A호
• /
• pp.838-845
• /
• 2008

본 연구는 OBE(On Board Equipment) 단말기를 이용하여 특별한 인프라 없이 무선통신이 가능하도록 단거리 무선통신(DSRC:Dedicated Short Range Communication) )을 이용하여, 차량 간 직접통신을 통한 교통정보교환방식 서비스 체계를 개발하였다. 본 기술은 이동차량이 교통상태정보를 실시간으로 센터에 전달함으로써 수집정보의 정확도를 개선할 수 있도록 하였으며, 통신 음영지역에서도 고품질의 교통정보 서비스 제공이 가능하게 하였다. 또한 본 기술은 통행료를 지불하는 ETC 기능과 함께 그 다음 통신 음영지역에서도 차량 간 직접통신을 통해 교통정보 지점방송과 GPS 등의 부가 통신서비스를 인프라 없이 제공 할 수 있는 장점을 가지고 있다.

• 품질경영학회지
• /
• 제49권3호
• /
• pp.359-374
• /
• 2021

Purpose: This study attempted to verify which factor affects the intention to use of the connected car that has recently emerged. Methods: Based on prior researches, this study derives the characteristics of connected car that affects user intention and designs research model for empirical analysis. A structured questionnaire was conducted for those who drive cars, and a total of 292 usable responses were collected and empirically analyzed using SPSS and PLS. Results: The results of this study are as follows; service quality, hedonic motivation, and social influence have a significant effect on perceived value, but system quality, information quality, user innovation, experience and facilitating condition did not. In addition, it was found that system quality, information quality, service quality, user innovation, facilitating conditions and social influence have a significant effect on satisfaction, but hedonic motivation and experience did not affect satisfaction. Conclusion: The findings of this empirical analysis have implications for effectively recognizing the value of connected cars based on the technology of information systems to users and establishing sustainable growth strategies for connected car producers and suppliers.

• 국제학술발표논문집
• /
• The 6th International Conference on Construction Engineering and Project Management
• /
• pp.221-225
• /
• 2015

To hoist construction workers to their working space is directly related to the productivity of building construction since hoisting tasks are carried out during the working time. In order to reduce hoisting time in the condition that the number of construction lift-cars is limited, various types of the lift-cars group operation plans such as zoning and sky-lobby have been applied. However, previous researches on them cannot be compared in the performance due to their methodological limitation, discrete-event simulation methods, and cannot be find better solution to increase the performance. Therefore, this research proposed the simulation-based optimization model combining the agent-based simulation method to the scatter search optimization methods. Using the proposed model, this paper carried out the comparison analysis on the performance of typical operation plans and also optimize an operation plans by controlling the service range of lift-cars, the size and number of service zones. In this case study, it is verified that better alternatives than typical operation plans can be exists and it is possible to increase the productivity of building construction.