• Journal of Korean Medical classics
• /
• v.34 no.3
• /
• pp.41-53
• /
• 2021

Objectives : This paper analyzes the newly discovered manuscripts of the HyangchonGyeongHeomdanbang(鄕村經驗單方). The HyangchonGyeongHeomdanbang is a collection of prescriptions written by Lee, Gyeongbu, a native of Gongju, Chungcheong Province, who served as a central official in the mid-19th century. Methods : First, background of the author was investigated through official sources. Next, bibliographical information along with the contents of the book were examined. Results : 1. Based on the findings of category classification, it can be concluded that the author put the most importance on tumefaction. 2. The author's main philosophy was cultivation based on Confucian ideas. 3. The book was intended for those without specialized medical knowledge. Conclusions : The HyangchonGyeongHeomdanbang(鄕村經驗單方) is an example of maximized convenience and accessibility in the accumulative process of clinical medicine during 19^th century Joseon.

• International Journal of Railway
• /
• v.6 no.2
• /
• pp.64-68
• /
• 2013

In recent years, the speed of a train has been recognized as one of the important factors to determine the competitiveness as a mean of transportation. In line with this, infrastructure improvements and enhancements are being made with increases in the speed of train. Accordingly, there is a need to establish plans for infrastructure improvements through a comprehensive analysis of signals, track/civil engineering, catenary and environment, etc. to improve the speed of a train of high-speed train service sections in Korea. This study proposes improvement plans for catenary systems by investigating the possibility of improvements through performance analysis of catenary equipment by speed increase based on the analysis on catenary systems in Gyeongbu high-speed line, and analysis the applicability of catenary improvements and economic feasibility.

• 한국도로학회:학술대회논문집
• /
• 2009.11a
• /
• pp.285-290
• /
• 2009

• Proceedings of the KSR Conference
• /
• 2010.06a
• /
• pp.359-370
• /
• 2010

In Apr. 2004, the 1st phase of Gyeongbu high speed railroad line was opened between Seoul and Busan, and this new high speed railroad service has increased the customers' satisfaction index and railroad passengers' profit. Moreover, at the end of year 2010 the 2nd phase of Gyeongbu high speed railroad line will be open, and the journey time between Seoul and Busan will be shortened and the new high speed railroad service will be expanded to Gyeongju & Ulsan area. This study will introduce the operation of connection service between new stations and downtown to the 2nd phase Gyeongbu high speed railroad station (Gyeongju, Ulsan station), and analyze the effects of connection service using connection demand analysis and also economic effects. This kind of connection service will contribute to the increase of passengers' satisfaction index and high speed railroad revenue.

• Journal of Korean Society of Transportation
• /
• v.35 no.6
• /
• pp.469-480
• /
• 2017

On April 1, 2004, KTX (Korea Train eXpress), the first HSR (High-Speed Rail) in Korea, was introduced to Gyeongbu Line. The introduction of the KTX service led to a change in the number of passengers for Gyeongbu Line. Previous studies have analyzed the pre and post-event changes of the intervening events by either simple statistics or intervention ARIMA analysis. However, the intervention ARIMA model has a limitation that several assumptions such as the occurrence time and the type of intervention events are necessary. To this end, this study analyzed the effects of intervention event on the number of passengers using the Gyeongbu line based on a time series outlier detection technique which can overcome limitations in the previous studies. The time series outlier detection technique can analyze the time, effect type and size of an intervention event without the assumption of the time and effect type of the intervention event. The data were collected from the Korea Transport Database (KTDB) for twelve years from 2003 to 2014 (144 months). The analysis results showed that the size of the influence type in the same intervention events was different across the major city routes, and the intervention event which could not be found by previous study methods was also found.

• Proceedings of the KSR Conference
• /
• 2011.10a
• /
• pp.1935-1942
• /
• 2011

We have tested the developed Korean tilting train in main exisiting commercial line for speed-up on cuve section to achive reduction effects of running time. We have conducted a trial run test to speed-up 30km/h on curves in Gyeongbu line successfully. Normal current train have been operated 110km/h in 600m radius. Yet, tilting train was tested 135km/h(maximum operation line speed) in same sections. We confirmed that the dynamic runing stability of train was safety by regarding wheel load and lateral force.

• Proceedings of the KSR Conference
• /
• 2009.05a
• /
• pp.721-729
• /
• 2009

Recently, there has been growing necessity to estimate the future travel demand of high speed train because the circumstance of high speed train service is rapidly changing with the launching of 2011 second stage of Gyeongbu high speed railway(Dongdaegu-Busan) and the completion of 2014 first stage of Honam high speed railway(Yongsan-Gwangju), etc. This study was designed to estimate future travel demand by analyzing the transport performance and train service characteristics of Gyeongbu and Honam line. This study presents the maximum load section and the changed future travel demand, which will be applied to establish a train operation plan.

• Proceedings of the KSR Conference
• /
• 2011.05a
• /
• pp.830-835
• /
• 2011

DMT Freight is judged that economic performance is good because can increase cargoes than existing freight. However, the existing freight cars, each with a different balance to the body structure is bogie because the vibrations may occur. Thus, by minimizing vibration over the existing freight securing the safety of the driving if you will not have major problems in cargoes. In this study, multi-body dynamic analysis tool, VI-Rail using the actually Gyeongbu Railroad line and an empty, full freight condition include curve radius, track irregularity, cent. DMT freight of the derailed wagons were assessed for safety analysis. Full and empty freight conditions for parity in the Gyeongbu Railroad line(Dongdaegoo ${\leftrightarrow}$Gyungsan) derailment safety analysis, such as derailment safety coefficient and the radius wheel road decrement, echoing the curve and the orbit is affected by the irregularity was found. Full freight condition than the empty conditions showed a significant derailment safety. Overall, the limits of derailment coefficient (Q/P=0.8) and wheel road decrement limits (${\Delta}P/P=0.6$) is less safe with me confirmed that the derailment safety.

• Magazine of the Korea Institute for Structural Maintenance and Inspection
• /
• v.17 no.3
• /
• pp.67-76
• /
• 2013

• Proceedings of the KSR Conference
• /
• 2007.11a
• /
• pp.494-499
• /
• 2007

The ballast, one of a track components, plays an essential role as intermedium in transmitting train traffic-load to subgrade safely, and deterioration of ballast caused by cumulative load effects growth of track irregularity. Especially in the case of Gyeongbu high-speed railway, the deteriorating speed of ballast by dynamic vibration is faster than conventional line because KTX is longer than normal trains in length and it's velocity is very fast with high speed of 300km/h as well. In addition, ballast is a nonlinear material contrary to ordinary metal which has homogeneous property and this property of ballast may cause transformation of ballast. Therefore the theoretical modeling of ballast is quite complicated and it is hard to ensure the reliability of the result. The objective of this paper is to examine the availability of GPR(Ground Penetrating Radar) in estimating the thickness and the degree of deterioration of ballast. First, We figured out the principle of GPR which is the technique of evaluating the condition of ballast and then analyzed data which were measured at Gyeongbu high-speed railway where KTX is running now.