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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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Journal DOI :
Korean Society of Civil Engeneers
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Volume & Issues
Volume 20, Issue 6D - Nov 2000
Volume 20, Issue 5D - Sep 2000
Volume 20, Issue 4D - Jul 2000
Volume 20, Issue 4C - Jul 2000
Volume 20, Issue 3D - May 2000
Volume 20, Issue 3C - May 2000
Volume 20, Issue 2D - Mar 2000
Volume 20, Issue 2C - Mar 2000
Selecting the target year
Tourism Region Choice Behavior Model of Tourist Using Covariance Structural Equation Model
Lee, Byung-Joo ; Choi, Joon-Kyu ; NamGung, Moon ;
Journal of The Korean Society of Civil Engineers, volume 20, issue 5D, 2000, Pages 457~457
This paper makes choice behavior model of tourism region using covariance structural equation model for the purpose of searching effect of visit experience and tourism image to decision making behavior of tourist. As the results, we found that tourist have considered visit experience and tourism image as tourism region choice behavior and that visit experience and tourism image have a close connection. So, According to activate of tourism culture we will have an effort to improve tourism image.
A Study on the Development of the Mode Choice Models & Parking Characteristic in Tourism Region -In the Principal Component Analysis-
Kim, Myung-Soo ; Kum, Ki-Jung ; NamGung, Moon ;
Journal of The Korean Society of Civil Engineers, volume 20, issue 5D, 2000, Pages 467~467
For grasping the characteristics of modal choice by the parking policy in tourist region, we carried out the stated preference survey to tourist in Kyeryong and Sorak Mountain. We grasped the whole characteristics by principal analysis for finding an effect that parking policy affect modal choice behavior, and made modal choice behavior model. As the results, we found that the parking policy of tourist region has many affects on modal choice behavior. Therefore, we have an very important proposal for the parking demands adjustment policy, that is, guide to use of public transport for tourist region is very important first of all.
The O-D Table Estimation Models and Its Application Based on Traffic Counts
Kim, Dae-Oung ; Park, Chul-Ku ; Lee, Ju-Hwan ;
Journal of The Korean Society of Civil Engineers, volume 20, issue 5D, 2000, Pages 481~481
This paper is to study the applicability of the three O-D estimation methods, combined model, maximum likelyhood method and the least square method based on the traffic counts, taking congestion into account and internalizing the route choice rate by incorporating the assignment process into estimation procedure. In this study, each of O-D estimation methods are used to Daegu road network and their estimation of accuarcy are analyzed. The results show that ,in case that is assumed that planner completely knows the prior information on O-D table, a better estimation results can be obtained by using the least square method, irrespective of the number or error (or fluctuation) of link volume data. But in case that is assumed that information on O-D table is really poor or not be, within 30% insufficieny or 15% error (or fluctuation) of link volume data, a better estimation results can be obtained by using the combined model. On the other hand, in case of more than 45% insufficieny or 20% error (or fluctuation) of link volume data, a better estimation results can be obtained by using likelyhood method than the combined model
A Study on the Dynamic Travel Model Based on Trips Activity
Kim, Myung-Soo ; NamGung, Moon ;
Journal of The Korean Society of Civil Engineers, volume 20, issue 5D, 2000, Pages 495~495
Driver's behavior which based on experience is considered as dynamic decision making behavior in information environment with change day by day. To do this, this paper carried out stated preference survey for driver's dynamic behavior analysis with travel time information on pre-trip. And we made the covariance structural equation model of dynamic route choice behavior inorder to analysis the effect that route choice behavior of (t-1) time is affect to the route choice behavior of (t). As result, we found that drivers make the dynamic choice behavior prefer travel time information and the change of environment to static choice behavior to change of time.
Analysis of Public Transportation Mode Choice Behavior on the Preference of Traffic Environment
Lee, Back-Jin ; Park, Young-Suk ; NamGung, Moon ;
Journal of The Korean Society of Civil Engineers, volume 20, issue 5D, 2000, Pages 503~503
As the using a private car has been more popularized, people have been requiring more developed public transportation systems. Therefore, for the sake of leading to transfer private car users user into using a public traffic mode, the public transportation plan to improve public traffic mode should be done more systematic, effective and qualitative. The aim of this paper is to know what variables have to be considered with main factors, when designers make a public transportation plan for improving the level of service. To do this, the paper has been focused on the people's perceptions on their traffic environments; the preference of alternative modes, the satisfaction of their current mode or traffic systems, and so on. The survey had been carried out to know traffic users consciousness on serious traffic problems and to find solution alternatives of obstacles on planing the transportation policy in March 2000. And then, we will construct three mode choice models; one binary mode choice model and two multiple mode choice models. The main problems in the survey area are a parking problem and a disproportional ration of mode assignment
An Overview of Travel Demand Modeling and Some Direction of Improvements : Model and GIS Aspects
Choi, Kee-Choo ; NamGung, Moon ; Yoon, Hang-Mook ; Oh, Seung-Hwoon ;
Journal of The Korean Society of Civil Engineers, volume 20, issue 5D, 2000, Pages 519~519
With the advent of UTPS, transportation planners started to use urban travel models in practice for transportation plan making. They are basically based upon the assumption that travelers choose if and when to take a trip for some purposes, where to go, which mode of transportation to use, and which route to follow to get there for that order. The famous 4 step modeling system UTPS and its variations are also following that assumption. This model and/or modeling approach, however, has some problems such as inability of handling dynamic phenomenon, inability of accurate congestion quantification and other error propagation features of the model. But the model should be improved rather than a totally new and acceptable modeling system come out to be used in practice. This paper, in this sense, reviews models, modeling approaches that have been used so far and propose some plausible improvement direction, focusing feedback issue and GIS coupling.
A Design Method of Horizontal Curve Based on Speeds
Jeong, Jun-Hwa ; Park, Young-Jin ; Park, Chang-Ho ;
Journal of The Korean Society of Civil Engineers, volume 20, issue 5D, 2000, Pages 537~537
Regarding individual design elements currently adopted to geometric design in Korea, existing standards have been established with consideration of vehicle and driver's characteristics. However, all the standards does not appear to consider carefully the relationship between design elements and their consistencies. As a result, current highway design standards do not satisfy all the subjects related to highway safety and consistency problem. To improve current horizontal alignment design procedure, this study provides an advanced horizontal alignment design method based on speed in curves. This study suggests 'Preliminary model for estimates of speed on curves' representing driver's characteristics more accurately. Based on this model, a 'relational design diagram' which can be applied to rural highway design is provided.
Reserved Construction Cost and Duration Considering External Risk Factors on Construction Schedule
Kang, Leen-Seok ; Kang, Jung-Ho ; Lee, Woo-Sik ; Kwak, Joong-Min ; Kim, Chang-Hak ;
Journal of The Korean Society of Civil Engineers, volume 20, issue 5D, 2000, Pages 549~549
The probabilistic simulation method of construction schedule can improve the confidence in estimating of construction cost and duration compared with conventional scheduling techniques. Construction scheduling is affected by internal and external probabilistic factors. The internal factors depend on the procedure of construction operations. The external factors, however, depend on the non-working duration by rainfall and winter season. This study suggests a method for risk management by quantifying the reserved cost and duration considering the external factors in network scheduling. For the study, the Monte Carlo simulation technique is introduced to simulate network by 1,000 times and a scheduling software is used to compute network time. This study also proposed an algorithm to analyze construction network through probabilistic simulation considering the external factors. Then, the validity of the algorithm was demonstrated in a case study, which consists of concrete framework of four apartment buildings of 15 floors.
Risk Level Assessment in the Preconstruction Phase of a Large Construction Project
Kim, Chang-Hak ; Kang, Leen-Seok ; Park, Hong-Tae ;
Journal of The Korean Society of Civil Engineers, volume 20, issue 5D, 2000, Pages 559~559
Recently, risk has been recognized as one of the most serious problems for successfully deliveringa construction project. Often construction projects fail to achieve time and budget goals due to the occurrence of unexpected risks that a contractor has failed to identify and analyze in the planning stage. This paper proposes a new risk breakdown structure (RBS) for the preconstruction phase and a risk index assessment model to ensure successful performance of construction projects. RBS can be built considering both internal and external risk elements of each projects. RBS and risk index assessment model can help analyze risks involved in the project, and can be used as a decision making tool for bidding process. For this study AHP and probability assessment methods were introduced in the model. The result of the study consists of a numerical value for quantifying construction risk at preconstruction phase and a risk elements set with relative weights.
A Study on the Improvement of Concrete Quality under the Construction CALS System
Lee, June-Hee ; Kim, Hong-Cheol ;
Journal of The Korean Society of Civil Engineers, volume 20, issue 5D, 2000, Pages 571~571
This thesis suggests the more improvable management model with the information technology to control the design of concrete mixtures systematically under the CALS environment. The information technology, because of being evolved mainly in the manufacture industry, should be reanalyzed and applied to the construction area, considering the characteristics of industry and materials (soil and concrete) respectively. We should rearrange the regulation and process, which comes from the BPR conception as one implementation strategy of the CALS system, to emphasize the practical management by the concrete quality assurance organization that gives the information about the design of concrete mixtures through each CITIS of the CALS system from the dispersive sites for the improvement of concrete quality.
Development of a Numerical Analysis Method of Longitudinal Forces of CWR on Railway Bridges
Yang, Sin-Chu ; Lee, Jee-Ha ; Suh, Sa-Bum ;
Journal of The Korean Society of Civil Engineers, volume 20, issue 5D, 2000, Pages 581~581
Railway bridges have a significant effect on stress and displacement of continuous welded rail (CWR). At high temperatures, longitudinal compressive forces can cause track buckling combined with braking or acceleration forces. On the other hand rail breakage can be occured at low temperatures under the combined influence of longitudinal tensile forces and braking forces. Therefore, it is very important to investigate these problems for thorough counter measures, especially in high speed rail which requires high safety. The exact evaluation of longitudinal forces of rail is the key to the solution. In this thesis, a numerical method for the evaluation of longitudinal forces of CWR on railway bridges is developed. The characteristics of sequential application of temperature loadings in rail and bridge and braking forces exerted by trains are considered in the method. The increase effects of longitudinal track resistance due to train climbing on track are also taken into account. The method is verified by comparing the results of analyses of numerical examples, which conducted between those using PROLIS, a computer program developed by Delft University and those by this study.
2D Water Quality Management Model in a River by Using GIS
Han, Kun-Yeun ; Kim, Sang-Ho ; Bae, Deg-Hyo ;
Journal of The Korean Society of Civil Engineers, volume 20, issue 5D, 2000, Pages 593~593
Two-dimensional water quality management model is developed for hydrodynamic and advection-diffusion analysis in a river by using Petrov-Galerkin finite element method. A Windows-based Graphical User Interface with pre- and post-processor is established for the efficient application. The suggested model is applied to the 35km reach of Sungju to Hyunpoong in the midstream of Nakdong River. A hydrodynamic and water quality analyses are performed in this reach, and analysis results are linked to the ArcView Geographic Information System. The proposed model is useful for visualization of various output including velocity distributions and water quality simulation results. It will also helpful for optimal decision-making from various alternatives of water quality management plans.
The 3D Behavior Measurement of Robots by the DCRP Component
Bae, Sang-Ho ; Kang, Joon-Mook ;
Journal of The Korean Society of Civil Engineers, volume 20, issue 5D, 2000, Pages 603~603
This study is to present the possibility of DCRP as vision metrology to verify the safety in various industry. For this, the photogrammetry classes, sub-pixel, LSM, scan image, bundle and DLT, etc, in separate process was composed by designing the hierarchical diagram to improve the accomplishment of CRP. And, It was composed by producting additional function modules, such as target recognition, grouping, image segmentation, location. Then, the 3D relocation measurement of robot was performed more efficiently by developing which can extend various subjected classes.
A Study on the Development of Bridge Disaster Management System Using Internet GIS
Ahn, Ki-Won ; Yoo, Hwan-Hee ; Shin, Sok-Hyo ;
Journal of The Korean Society of Civil Engineers, volume 20, issue 5D, 2000, Pages 613~613
The purpose of this study is to develop a Bridge Disaster Management System for bridge safety control using Internet GIS. Because the developed system has an additional Java Applet functions, user connected to this constructed Web server can execute dynamic data processing including static HTML GUI. The developed Internet GIS based Bridge Disaster Management System has the functions of mapping, attribute and spatial information searching, spatial query processing, etc.. Besides, this system is possible to disaster management which irrespective of time and place using internet.