Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Nam-Sun Kim.
The Journal of The Korea Institute of Intelligent Transport Systems | 2015
Sang-O Lee; Choul-Ki Lee; Ilsoo Yun; Nam-Sun Kim; Yong-Ju Lee
This study was intended to evaluate the feasibility of the vehicle detector using a coil sensor. For the evaluation, the research team built a test environment for the detector consisting of a oscillation circuit, data collecting circuit, data monitoring and saving circuit, etc. As the result of the frequency analysis of the detector from the test environment, it was verified for the detector using a coil sensor to generate stable frequencies. In addition, the ease of construction and management was tested by comparing the size of cutting areas, consumption of installation materials, and installation time for a traditional loop detector and the detector using a coil sensor. As a result, the installation of the detector using a coil sensor requires less size of cutting areas, consumption of installation materials, and installation time.
International Journal of Highway Engineering | 2015
Se-Hwan Lee; Choul-Ki Lee; Ilsoo Yun; Nam-Sun Kim; Da-Mi Kang
PURPOSES : In link matching using vehicular trajectory in a car navigation system, it is technically difficult to match the location of the subject vehicle with a link on an electronic map in the vehicle on a grade separation highway segment consisting of an elevated highway and atgrade highway, because of the overlap of geometric lines of the two highways. This study was initiated to propose a link matching algorithm using the characteristics of vehicular movement of the subject vehicle. METHODS : The selected test site is the highway segment between Jeong-reung IC and Gil-eum IC where the Inner Circulation Road and Jeong-reung-ro run together. To evaluate the proposed algorithm, this study collected the raw packet data of vehicles that drove on the test site. In a simulation environment, link matching was performed using an existing algorithm as well as the proposed algorithm. RESULTS: It was clearly found that the characteristics of vehicular movements are different on the two highways. CONCLUSIONS: The proposed algorithm outperformed the existing algorithm.
The Journal of The Korea Institute of Intelligent Transport Systems | 2012
Ho-Joon Lee; Sangsoo Lee; Choul-Ki Lee; Nam-Sun Kim
Journal of the Eastern Asia Society for Transportation Studies | 2004
Hwan-Pil Lee; Nam-Sun Kim; Young-Tae Oh; Soo-Hee Kim
The Journal of The Korea Institute of Intelligent Transport Systems | 2016
Doo-Hee Nam; Sangsoo Lee; Nam-Sun Kim
The Journal of The Korea Institute of Intelligent Transport Systems | 2016
Guk-Hyun Lim; Nam-Sun Kim; Sangsoo Lee; Doo-Hee Nam; Jeong-Tae Kim
The Journal of The Korea Institute of Intelligent Transport Systems | 2013
Sang-Hyun Lee; Seung-Neo Son; Nam-Sun Kim; Yong-Sung Cho
The Journal of The Korea Institute of Intelligent Transport Systems | 2010
Woong-Gu Han; Kangwon Shin; Keechoo Choi; Nam-Sun Kim; Sang-Hyun Sohn
17th ITS World CongressITS JapanITS AmericaERTICO | 2010
Ilsoo Yun; Ji-Hye Eun; Young Tae Oh; Nam-Sun Kim
17th ITS World CongressITS JapanITS AmericaERTICO | 2010
Seung-Hwan Lee; Gwang-Yong Go; Nam-Sun Kim; Ji-Hye Eun; Su-Young Yu