• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.19 no.6
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• pp.14-25
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• 2020

This research proposes a methodology to evaluate the rationality of passengers' route choice who make trips within Seoul metropolitan subway based on smart card data. The rationality of user route choice is divided into the degree of determinacy and similarity concepts as basic principle. Determinacy is the degree to which the route selected by the passenger is identical to the system optimal path. Similarity indicates the degree to which the route is similar to the system optimal path. The K-path search method is used for path enumeration, which allows for measurement of determinacy. To assess determinacy within similarity, transfer tag data of private operators is used. Consequently, the concept of similarity applied to the model is such that the passenger's path choice is identical to the path taken using the tag reader. Results show that the determinacy of appearance of the shortest path (K=1) is 90.4%, while the similarity of appearance as K=(2-10) is 7.9%, summing to 98.3%. This indicates that trips on the metropolitan subway network are being rationally explained. 1.7% of irrational trips are attributed to the unexplainable error term that occurs due to the diversity of passengers.

• The Journal of the Korea Contents Association
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• v.15 no.11
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• pp.137-153
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• 2015

In this study, volunteer experience(motive, durability, satisfaction, content) was set up as an independent variable, career maturity degree(determinacy, involvement, independence, tendency) was set up as a dependent variable, and the average difference and effect of the sub factors for each of them were reviewed. For this purpose, questionnaires were performed with 519 students at the middle schools and high schools in Busan. With 376 students having volunteer experiences among them, an analysis was done to find out the effect of volunteer experience on career maturity. The results of this study are as follows: First, whether having volunteer experience or not affected the career maturity among youths. That is the group with volunteer experience had higher level of interest, involvement and value in career and jobs than the group without them. Second, it showed that volunteer experience affected career maturity among youths. Specifically, career maturity was higher as their motive for volunteer activities was selfish, their satisfaction for volunteer activities was higher and they had more volunteer activities.