• Title/Summary/Keyword: Public transportation information

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Analysis of the Utilization of Mobile Applications by Generation Z using Topic Modeling :Focusing on Users' Essay Data (토픽모델링을 활용한 Z세대의 애플리케이션 효용성에 대한 분석: 이용자의 에세이 데이터를 중심으로)

  • Park, Ju-Yeon;Jeong, Do-Heon
    • Journal of Industrial Convergence
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    • v.20 no.1
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    • pp.43-51
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    • 2022
  • The purpose of this study is to provide basic information necessary for the establishment of mobile service marketing strategies, educational service development, and engineering education for Generation Z by analyzing the utilitization of various applications by Gen Z. To this end, 177 essays on mobile service usage experience were collected, major topics were analyzed using topic modeling, and these were visualized through word cloud analysis. As a result of the study, the main topics were related to 'transportation' such as movement and public transportation, 'personal management' such as schedule management, financial management, food management, 'transaction' such as checkout, meeting, purchase, 'leisure' such as eating out, travel, study, culture. Additionally, words such as time, thought, people, life, bus, information, confirmation, payment, KakaoTalk, and so on were found to have a high of frequency of use. Also, there was found to be a difference between topics by college. This study is meaningful in that it collected essays, which are unstructured data, and analyzed them through topic modeling.

The Korea's indiscretion in maritime-terrorism and the counter plan (한국 해양테러의 실태 및 대응방안)

  • Park, Jun-seok;Park, Yu-Deuk;Kim, Gi-sang
    • Journal of the Society of Disaster Information
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    • v.3 no.2
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    • pp.79-93
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    • 2007
  • With international urgence of terror situation, many methods of terror techniques and skills are appearing and more intense and threatening terror is braking out not only in the air(plane), but also in the sea(ship). Korea is surrounded by 3 sides of sea and is a proud maritime nation that should advance to foreign country through the sea because South Korea and North Korea are confronting. Korea depend on the maritime transportation, 99.7% of exporting, importing material resources. Therefore, acquisition of the marine safety has the great affect on national security and economical life. On the high tension of situation about threat and possibility of maritime terroism, the potential ways of the improvement policy for counter-tactics against big maritime terror are the following. First, we should construct clear and well-organized network for accurate information about maritime terrorism Second, we should have the information of all domestic, foreign passenger's ships Third, national important facilities such as atomic energy plant, thermo-electric power plant, shipyard need policies to manage all emergency situation Fourth, government authorities should improve tactic abilitities by competing with support and budget inside of nation as well as outside of nation. To develop big maritime terror of our country, we will have to hold cooperative training & tactics contest of big maritime terror by cooperating educational industry organization with similar institute, improve the ability of members of big terror and acquire tactics information by excavating and exchanging a new technique through tactics seminar and public hearing.

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Research on the Continuous Use Intention of Mobile Bus Payment App from the Perspective of user Quality Perception

  • Li, Shuo;Sun, Cong-Ying
    • Journal of the Korea Society of Computer and Information
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    • v.27 no.9
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    • pp.217-224
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    • 2022
  • Based on the success model and Expectation Confirmation model of information system, the concept model of mobile bus payment App users' willingness to continue using is constructed by introducing function quality and interface design quality. A total of 264 valid questionnaires are obtained by issuing online questionnaires, and the model is tested by SmartPLS3.0 software The results show that users' perceptions of information quality, system quality and interface design quality will affect users' perceived usefulness and satisfaction through the scene, and then affect users' willingness to continue to use; Perceived functional quality has a significant impact on perceived usefulness, but has no significant impact on satisfaction. Perceived usefulness has a significant impact on user satisfaction.

HoAaRO: Home Agent-Assisted Route Optimization Protocol for Nested Network

  • Sun, Shi-Min;Lee, Sang-Min;Nam, Ki-Ho;Kim, Jong-Wan;Yoo, Jae-Pil;Kim, Kee-Cheon
    • Proceedings of the Korea Information Processing Society Conference
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    • 2008.05a
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    • pp.1035-1038
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    • 2008
  • Network mobility (NEMO) has been studied extensively due to its potential applications in military and public transportation. NEMO Basic Support Protocol (NBSP) [1], the current NEMO standard based on mobile IPv6, can be readily deployed using the existing mobile IPv6 infrastructure. However, for Nested network mobility, multi-level tunnel and too many Binding Update packets results in substantial performance overhead, generally known as route sub-optimality, especially in the bottleneck root mobile router (root-MR) and Access Router. In this paper, we propose a route optimization mechanism for nested network mobility management to reduce the overhead of root-MR. In this system, Mobile Router (MR) has a cache that stores Mobile Network Nodes' (MNN) information, Correspondent Nodes' (CN) information for every MNN,and the attachments information with its subnet MRs. Home Agent performs Binding Update with CNs responsible for MRs. Through this mechanism, the number of tunnel is limited between CN and MR and the overhead of root-MR is reduced obviously.

Historical Data on Indoor and Outdoor Air Quality in Seoul, Korea (1980년대 초 서울의 실내외 대기질 수준 - Sherwood 교수의 측정 자료 활용)

  • Lee, Kiyoung;Sherwood, R. Jerry
    • Journal of Environmental Health Sciences
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    • v.39 no.1
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    • pp.99-103
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    • 2013
  • Objectives: This paper was prepared in memory of Jerry Sherwood, who provided a significant contribution to the Korean environmental and occupational health fields. Methods: Rare air quality data in Seoul were gathered by Jerry Sherwood when he visited Korea in the early 1980s. $SO_2$ and TPM concentrations were measured. These air quality measurements were based on ambient stationary monitoring and indoor air quality monitoring in various locations. Measurement during transportation was also applied. Results: Ambient $SO_2$ and TPM concentrations in Seoul were very high in the early 1980s. Ambient $SO_2$ concentrations were higher at nighttime. While ambient $SO_2$ concentrations varied by location, the Guro industrial area showed high levels. When indoor sources were presented, indoor $SO_2$ concentration was higher than outdoor level. Coal briquettes were closely associated with high indoor $SO_2$ concentration. Conclusion: This paper provided valuable historical information of air quality in Seoul.

Analysis and Comparison of Factors to Influence the Use Behavior of Vertiport: UTAUT Research Model (버티포트 이용행태에 미치는 영향요인 및 요인별 비교 분석: 통합기술수용모형(UTAUT)를 활용하여)

  • Su-Mi Lee;Ki-Woong Kim;Sung-Sik Park
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.32 no.1
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    • pp.49-60
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    • 2024
  • This study used the Unified Theory of Acceptance and Use of Technology(UTAUT) model to find factors that influence consumer acceptance intention toward Vertiport, a physical ground support technology required to implement AAM services. The analysis showed that among the four independent variables, Vertiport's social influence and facilitating conditions have a significant impact on future Vertiport usage behavior. At this point, the public has not yet had actual experience with Vertiport, so there is a limitation of considering it as a future concept based on speculation and measuring acceptance by actual behaviors related to its use (inquiries, information gathering, interest, etc.). Research on acceptance and attitudes toward new transportation methods should be further activated and developed along with future service development. Through the results of this study, we aim to understand the initial public acceptance of Vertiport as a ground-based infrastructure in the AAM field (or UAM) and propose strategic implications for the direction of service development.

A Study on the Influence of COVID-19 on International Arbitration (COVID-19가 국제중재에 미치는 영향에 관한 연구)

  • Kim, Yong-Il;Hwang, Ji-Hyeon
    • Journal of Convergence for Information Technology
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    • v.11 no.12
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    • pp.80-89
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    • 2021
  • In order to combat the spread of COVID-19, on January 30, 2020, the World Health Organization declared that the spread of COVID-19 has met the criteria of a "Public Health Emergency of International Concern" under Article 1 of the International Health Regulations(2005) and proposed a variety of preliminary recommendations to fight against the pandemic accordingly. All of a sudden, people are ordered to wear face-masks in public-which is forbidden for different reasons in many jurisdictions. Of course, the legal world was hit by the virus as well. Needless to mention that where economic and social life will change so drastically, the legal world will change(ex. virtual hearing) as well. Most probably, it will not ever be the same after COVID-19. And where the whole legal world will change, it is easy to state the obvious, namely that COVID-19 has and will have an impact on international arbitration as well. This paper will describe how international arbitration is dealing with this new challenge.

A Study on Micro-Mobility Pattern Analysis using Public Bicycle Rental History Data (공공자전거 임대내역 데이터를 활용한 마이크로 모빌리티 패턴분석 연구)

  • Cho, Jaehee;Baik, Gaeun
    • Journal of Information Technology Services
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    • v.20 no.6
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    • pp.83-95
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    • 2021
  • In this study, various usage patterns were analyzed after establishing a data mart for micro mobility analysis based on the rental history of public bicycles in Seoul. Rental history data is origin-destination data that includes the rental location and time, and the return location and time. About 1500 rental locations were classified according to the characteristics of the location to create a 'station type' dimension. We also created a 'path type' dimension that displays whether the rental location and return location are the same. In addition, a derived variable called speed, which is obtained by dividing the distance used by the time used, is added, and through this, the characteristics of the riding area and the reason for the rental can be estimated. Meanwhile, administrative district link, administrative neighborhood link, and station type link were created to apply network analysis. Through this analysis, the roles and proportions of administrative districts, public facilities, and private facilities engaged in micro-mobility services were visualized. 49.9% of rentals occur at rental offices near transportation facilities, and half of them occur at rental offices near subway stations. The number of rentals during the evening rush hour is more than double that of the morning rush hour. When the path type is unidirectional, there is a fixed destination, so the distance and time used are short, and the movement speed tends to be high. In the case of round-trip, the purpose of use is exercise or leisure, so the distance and time used are long, and the movement speed is slow. It is expected that the results of the analysis can be used as reference materials for selecting new rental locations, providing convenient services for users, and developing user-specialized products.

The Standardization of Location Data for Location-based Services (위치기반 경로안내 서비스를 위한 위치 데이터 표준안 개발)

  • Jeong, Yeon-Jeong;Park, Sin-Hyeong;Park, Chang-Ho;Kim, Chang-Ho
    • Journal of Korean Society of Transportation
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    • v.27 no.2
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    • pp.73-82
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    • 2009
  • Location-based concierge services (LBCS) are considered to be one of the main service functions provided in a city in ubiquitous technology spaces. A "Ubiquitous City" is defined as a city in which both public and private services can be delivered and received anywhere and anytime. One of the key elements that make location-based concierge services successful is the interoperability of location data. Currently, several existing technologies could provide LBCS including car navigation services and ubiquitous computing. However, lack of standardized structure for location data makes it impossible for heterogeneous technologies to be able to deliver uniform LBCS. The purpose of this paper is to develop standardized locational data structure so that heterogeneous technologies could provide efficient LBCS to all users of the various transportation modes.

Analysis on the Auto Accident Risks of the Old (고령자의 자동차사고 위험도 분석)

  • Kim, Dae Hwan;Heo, Tae Young
    • Journal of Korean Society of Transportation
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    • v.33 no.1
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    • pp.100-111
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    • 2015
  • After empirically investigating the vehicle accident risks by age groups, various programs and policies have been imposed to reduce the old's risks in other countries. In Korea, it is little known the risk level by age groups and no policy changes has been implemented even if the number of vehicle accidents occurred by the old has been rapidly rising while the total number of vehicle accidents has been decreasing. This study empirically investigates the vehicle accident risks by age groups and the results show that the old drivers over age 65 has the highest accident risk except for the young drivers below age 25. Thus, we emphasize the necessity of reinforcing the qualifications for reissuing the drive licence and programs for educating the old drivers in Korea which is facing the most rapid population aging in the world. On the other hand, various changes are needed reflecting the old drivers such as reforming the road signs, issuing a sticker and providing them incentives such that the old drivers use the public transportation instead of self-driving.