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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of The Korean Society of Civil Engineers
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Korean Society of Civil Engeneers
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Volume & Issues
Volume 24, Issue 6D - Nov 2004
Volume 24, Issue 6C - Nov 2004
Volume 24, Issue 6B - Nov 2004
Volume 24, Issue 6A - Nov 2004
Volume 24, Issue 5D - Sep 2004
Volume 24, Issue 5C - Sep 2004
Volume 24, Issue 5B - Sep 2004
Volume 24, Issue 5A - Sep 2004
Volume 24, Issue 4D - Jul 2004
Volume 24, Issue 4C - Jul 2004
Volume 24, Issue 4B - Jul 2004
Volume 24, Issue 4A - Jul 2004
Volume 24, Issue 3D - May 2004
Volume 24, Issue 3C - May 2004
Volume 24, Issue 3B - May 2004
Volume 24, Issue 3A - May 2004
Volume 24, Issue 2D - Mar 2004
Volume 24, Issue 2C - Mar 2004
Volume 24, Issue 2B - Mar 2004
Volume 24, Issue 2A - Mar 2004
Volume 24, Issue 1D - Jan 2004
Volume 24, Issue 1C - Jan 2004
Volume 24, Issue 1B - Jan 2004
Volume 24, Issue 1A - Jan 2004
Selecting the target year
Dynamic Mixed Logit Model Considering State Dependence with Time Periods
Lee, Byung-Joo ; Choi, Ji-Sun ; Park, Chae-Man ; NamGung, Moon ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 1D, 2004, Pages 1~9
Multinominal logit model to explain the traffic situation is hard to consider difference of route user who have very various characters, because the model are assumed to identify in each others. Therefore, the necessity of a route choice model development about the route user have been increased. We have developed mixed legit model which can consider a difference of route user. And, we examine the change of route choice behavior under the influence of dynamic transportation which route user change by the time period. In result of development of dynamic traffic behavior model using mixed logit model, travel information prior to departure in is a very important factor to drivers. Also, these pre-trip information is of importance factor for the advanced traveler information system (ATIS). It could be known that mixed logit gives a better fit in comparison with the multinominal logit model.
A Study on the Traffic Improvement Method of Feeder Distribution for Greenhouse Gas Mitigation - The Case of On-street Operation Parking in City -
Oh, Seung-Hwoon ; Kang, Jun-Mo ; Hwang, In-Cheol ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 1D, 2004, Pages 11~18
On December, 1997, nations reached an agreement in Kyoto, Japan, on limiting emissions of carbon dioxide and other greenhouse gases. This agreement, The Kyoto Protocol calls for the industrialized nations to reduce their average national
emissions over the period 2008-2012 to about five percent below 1990 levels. As a member country of OECD, Korea also has paid a lot of attention on the measures with which to reduce its
emissions. Due to the increasing motor vehicles on the roads, urban areas in Korea suffer from rapidly increasing
emissions. This study looks into possible
emission reduction strategies, focusing on the urban freight system, especially on the process of on-streets loading and unloading operation of urban goods. The structure and mechanism of freight system in urban areas are examined and analyzed, and the cases of other OECD countries are also studied.
A Study on Deriving of Adjustment Factor to Estimate AADT
Lim, Sung-Han ; Oh, Ju-Sam ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 1D, 2004, Pages 19~29
Two methods currently exist to obtain AADT (Annual Average Daily Traffic). One is to install a traffic data collection system at a specific point on the highway for a permanent count, and the other is to estimate the AADT by counting traffic volume over a short period of time. This study deals with the methods for implementing monthly and daily adjustment factors to estimate AADT reasonably by a temporary (or coverage) count data. It involves three methods of deriving adjustment factors. One is the traditional method based on cluster analysis of adjustrment factors (method 1), the other is the method based on permanent traffic data collection system (method 2), and the third is the method based on shortest distance (method 3). Permanent traffic data in 2001 is utilized and three methods are compared by MAPE (Mean Absolute Percentage Error) index. MAPE of adjustment factors for three methods are that method 1 is 5.4%, method 2 is 4.6%, and method 3 is 4.8%, so method 2 is better than others. Method 2 is easy to apply, so it will be useful in practical affairs.
A Study on the Index and Standards of Illegal Parking for the Case Study of Bucheon City
Kwon, Young-In ; Kim, Hwang-Bae ; Oh, Seung-Hwoon ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 1D, 2004, Pages 31~36
Illegal parking is based on the Road Traffic Act, but detailed and systematic guideline is needed to consider regional environment of the street. This study considered land use pattern, road congestion level, and illegal parking frequency for the guideline of illegal parking. The case study applied to Bucheon City and integrated GIS data base was built up. The guideline was classified all day, daytime, weekend & holiday by day, morning and afternoon peak time by time. The guideline, also, suggested guideline to apply draw, sticker and warning to the illegally parked car. The research result leaded "Illegal Parking Manual" and applied for the guideline to the city of Bucheon City from October 2003.
Driver Behavior Analysis Using Internet-Based Route Choice Simulator
Choi, Byung-Kuk ; Kim, Kab-Soo ; Sheok, Chong-Soo ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 1D, 2004, Pages 37~43
It is necessary to analyze driver behavior about VMS information for a efficient traffic control. Current state-of-the art of the analysis of driver behavior about VMS information is based on SP surveys. These surveys, however, have kind of shortages ; (1) It is hard to be understood fully the situation by the answerers, (2) It Takes time and cost a lot. To overcome these shortages, internet-based route choice simulator was established in this study. We have collected 2,294 sample data from 1,457 e-mail user. The results show that the route change rate according to the information contents is, respectively, 75.8% for accident information, 87.6% for delay time, and 89.2% for detour information. And we also found that commuter are more sensitive about detour information then incident information.
Evaluation and Comparison of Metro Network - Busan Metro Network -
Shin, Yong-Eun ; Kim, Heung-Kwan ; Baek, Tae-Kyung ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 1D, 2004, Pages 45~50
A design of metro system has always been one of major public undertakings in the city, so that an appropriate evaluation of its system is an important task for urban planners who design the city. This paper evaluates the characteristics of metro network in Busan, based on a set of quantitative measures and indicators suggested by Vuchic and Musso (1989). The set include metro network size and form, its relationship with the city, service quality and utilizations. Using the set, this paper compares the present Busan metro network with the network including the new metro line scheduled to open in 2008. It also compares it with the metro systems of other major cities. The results show the improvement of metro system when the new line is opened in terms of network characteristics. It, however, also shows that there are still plenty of rooms for improvement when compared to other cities.
The Operating Speed Analysis and Modeling at The Entrance Terminal of Ramps
Kim, Dong-Nyong ; Jang, Min-Ki ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 1D, 2004, Pages 51~58
This research established the model to assume the operating speed on the nose point with the geometric characteristics of entrance ramps. For this research, the interchange entrance ramps at Chungnam and Gyeonggi were selected as investigation points. The types of ramps are diamond, direct and loop ramps. The geometric characteristics that affect the operating speed on the nose point were surveyed and the passing speed on the nose point were measured at the spot to establish the model of operating speed at each ramp. By using the established model, the initial speeds of the acceleration lanes were calculated and the acceleration lengths for each geometric characteristics were computed. In the case of diamond interchange ramps, the acceleration lengths were calculated when the design speeds of the major road are 80kph and 90kph. In the case of direct ramps, the acceleration lengths were calculated according to the radius of curves on the ramp were when the design speeds of major roads are 80kph to 120kph.
GPS-based Equipment Path Planning for a Tele-Operated Earthwork System
Kim, Sung-Keun ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 1D, 2004, Pages 59~66
Recently, there is a plan to conduct an advanced research on developing a remote-control system for automated earthwork operations. Without a path planning method for earthwork equipment, the system cannot be achieved effectively. Thus, for the full implementation of the automated system, the development of an efficient path planning method is required to find a shortest collision-free path from the initial position of construction equipment to its target position. Also, the development of the path planning method is required for overcoming the ineffectiveness of human's intuitive operations. This paper presents a global and a local path planning method for the good movement of earthwork equipment, which can produce an effective path in an unknown environment with both stationary and movable obstacles. The concept of GPS is applied to develop the path planning method. The proposed path planning method makes it possible to overcome the weak points of the previous path planning algorithms and to produce a shorter path.
Developing Pavement Pay Adjustment based on Life Cycle Cost for use in Performance-related Specifications
Choi, Jae-Ho ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 1D, 2004, Pages 67~74
The development of a Pay Adjustment (PA) procedure for implementing Performance-related Specifications (PRS) is known to be a difficult task faced by most State Highway Agencies (SHAs) due to the difficulty in areas such as selecting pay factor items, modeling the relationship between stochastic variability of pay factor items and pavement performance, and determining an overall lot pay adjustment. This led to the need for an effective way of developing a scientific PA procedure by incorporating Life Cycle Cost Analysis (LCCA)-embedded Monte Carlo approach (LMCS). In this work, a prototype contract support system is proposed to determine a pay adjustment specifically using the data in the pavement management information systems at Wisconsin Department of Transportation (WisDOT) as an exemplary to other SHAs. It was found that the result of the case study used to validate the proposed PRS methodology is consistent with the generally known relationships between quality characteristics and pay adjustment trends. In addition, this paper addresses the importance of adopting the PRS concept in domestic as a viable alternative for improving pavement quality.
A Post-Design Evaluation of the Urban Environment: A Case of Seoul's 'Pedestrian-Friendly Streets'
Kang, Jun-Mo ; Kim, Joung-Un ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 1D, 2004, Pages 75~81
This study intends to ensure public interests and the rationality of future user-oriented designs by emphasizing the importance and necessity of post-design evaluation. The designer-intended performance of the subject environment will be evaluated through a post-design evaluation of design objectives while simultaneously confirming the difference of environmental perception between designer and user. As one of the most user-oriented urban environments,'Pedestrian-Friendly Streets' were selected as sites for the case study and a post-design evaluation was performed. An obvious difference of environmental perception between the designer and user was found due to the symbolic meaning or physical nature of the environment. Although the overall results from the evaluation of design objective conformity turned out negative, satisfaction of 'Pedestrian-Friendly Streets' was relatively positive. It was concluded that overall satisfaction could be acquired through the positive perception of only a few design objectives and that this depended on the physical/phenomenal tendency of the outcome of objectives desired by the user.
A Study on the Consciousness of the Person in Charge about the Policy Promotion of Residential Improvement Program - In the Case of Pusan Metropolitan City -
Kim, Heung-Kwan ; Shin, Yong-Eun ; Baek, Tae-Kyung ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 1D, 2004, Pages 83~91
In Pusan there are 130 slums which are needed residential improvement, there are so many regions in comparison with other regions and that's why the residential improvement projects in Pusan could not be promoted smoothly. The purpose of this study is to give implications for effective promotion of residential improvement policy. To make it, we compare the conditions for the promotion of Residential Improvement Program of Pusan with those of other regions, and analyze informations through a questionnaire which is the person in charge-oriented on public sector project. Through the analysis, we reached some conclusions. First, for promotion of the project it is needed to lay out a scheme which can be took part in by the private sector. Second, we should device a proper measure to protect existing renters. Third, central government must subsidize a portion of the expenses required in improvement of infrastructure to a local government which has many projects. Finally, a local government which has many projects should make annual plans for construction of infrastructure.
A Study on the Analysis of Spatial Structure in Busan Metropolitan City
Baek, Tae-Kyung ; Shin, Yong-Eun ; Kim, Heung-Kwan ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 1D, 2004, Pages 93~98
The purpose of this study is to search for characteristic of urban structure in Busan metropolitan city and to support decisionmaking in urban spatial structure policy. As basic work for the analysis of the spatial structure, we build database by using the social-economic data from statistical annual report made by each district in Busan and the facility layers on the digital maps. And then by using DB, we carried out the spatial structure analysis through multivariate analysis.
The Analysis of Deformation of Traffic Accident Vehicle Using Digital Imagery
Kim, Jin-Soo ; Seo, Dong-Ju ; Lee, Jong-Chool ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 1D, 2004, Pages 99~105
This study performed a quantitative analysis of vehicle deformations caused by traffic accidents by making precise measurements of deformed parts on vehicles involved in traffic accidents using digital photogrammetry. This study first placed a deformed part on a grid(
) and displayed it as a vector map, followed by a shaded relief and digital surface model(DSM). Based on the results, the pattern of deformation was thus evaluated. In addition, the degree of deformation that it represented was analyzed by computing the volume on a specific base surface using the trapezoidal rule, Simpson's rule and Simpson's 3/8 rule. When data about various vehicles and vehicle accident conditions are gathered and maintained and research on the strength and kinetic characteristics of vehicles is carried out regularly, this analysis of deformation will be of effective use in determining car speed just before a collision, and in scientific and efficient reproduction and interpretation of vehicle accidents.
A Rigorous Geometric Rectification of RADARSAT SAR Imagery Using a Single Control Point
Sohn, Hong-Gyoo ; Song, Yeong-Sun ; Kim, Gi-Hong ; Bang, Soo-Nam ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 1D, 2004, Pages 107~115
For accurate geometric modeling of SAR imagery the relationship between image coordinates and ground coordinates must be precisely established. The most tedious and time-consuming step in geocoding of SAR imagery is the precise identification of ground control points from SAR imagery. This task is a lot more difficult than that of optical sensor imagery due to the existence of speckle noise in SAR imagery. Moreover since SAR imagery is frequently used for the analysis of natural disaster such as flood area analysis, earthquake monitoring, and forest fire monitoring due to its day and night and all-weather capabilities, the real time geometric modeling of SAR imagery is essential for the rapid analysis. In this paper the rigorous geometric modeling of SAR imagery using a single ground control point is performed to reduce processing time. For achieving the goal we utilized a single ground control point together with the ephemeris information available from the header file of the imagery. The accuracies of geometrically corrected images using a single ground control point are similar with those of images using many ground control points. The RMSE(root mean square error) of a single ground control imagery using the developed algorithm is about 3.1 pixels and the RMSE of many ground points are 3.89 pixels. Accordingly our result is very applicable to the condition when rapid processing is needed or when it is difficult to acquire many ground control points.
A study of the application of GSIS for the DB Construction and Present Situation Management of Traffic Accident
Lim, Seung-Hyeon ; Cho, Gi-Sung ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 1D, 2004, Pages 117~124
The current system of traffic accident survey is using a real situation investigation report(namely, Form No. 104) written for handling the traffic accident and rewriting the statistical origin table which is used as a basis for creating statistics. However, some of items on these reports are inadequate to the current traffic circumstance and to construct as spatial DB. Also, it couldn't grasp the accident situation quickly because the collection method is still manual and there are some of unscientific aspects, so it need to reform these aspect. Therefore, this study investigated and analysed the accident data that is collected at the accident spot and by inner investigation under the current traffic accident management system, presented the new items of accident data which appropriate to the current traffic circumstance, and presented the approach of DB construction and management. Also, this study developed a GIS which enable the user to effectively save, edit, modify, delete, print the accident data. In addition, this study developed the real-time management system of traffic accident present situation, which can receive the accident data collected by PDA(Personal Digital Assistants) at the accident spot by means of real-time processing through wire-wireless transmission and find total of traffic accident. if these system is introduced to the future traffic accident management affairs, it could work out a strategy for coping with the traffic accident in real-time. so it is expected the considerable effect as the traffic accident management and operation system.