• Title/Summary/Keyword: Transportation

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What Drives Residents Low Carbon Transportation Commuting? Evidence from China

  • Li, Liang;Tan, Meixuen;Sun, Huaping;Sanitnuan, Nuttida
    • Asia Pacific Journal of Business Review
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    • v.6 no.1
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    • pp.21-48
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    • 2021
  • Promoting low carbon transportation adoption is important for energy saving. Some prior studies have discussed on environmental values affect low carbon transportation commuting is inconclusive. This study has constructed the environmental values, utility value, and social influence-based low-carbon transportation adoption model through the theory of the technology acceptance model and VBN model and the IS success model. Through the SEM model and stepwise regression analysis, we have found that environmental values positively affect utility value, and utility value also positively affects the behavior adoption of low carbon transportation. The utility value as mediating effect in the relationship between environmental values and low carbon transportation commuting behavior. Besides, we also have found that social influence positively impacts the behavior adoption of low carbon transportation. It better enhances the level of household residents' environmental values and utility values, and social influence for promoting the adoption of low carbon transportation. This present research provides theoretical guidance and suggestions for promoting the development of low-carbon transportation innovation.

Impact of Government Response to COVID-19 on the Role of GVC and Transportation

  • Hyuksoo Cho;Sang-kyun Kim
    • Journal of Korea Trade
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    • v.27 no.2
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    • pp.22-46
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    • 2023
  • Purpose - study aims to investigate the relationships between global value chain (GVC)- and transportation-related determinants and economic performance. Also, moderating effects of COVID-19 on the relationships are theoretically and empirically discussed. A limitation of previous studies includes their over-reliance on the opportunities of GVC participation and larger transportation. This study represents the challenges associated with them. Also, it shows how GVC and logistics can be difficult in case of a market fluctuation such as COVID-19. Design/methodology - The sample for this study includes 828 observations from 138 countries. A semi-panel data set has been used. Six observations for each country are used to empirically test the hypotheses and a Two-way cluster model is conducted. Findings - It is confirmed that GVC forward participation contributes more than the backward participation to enhance performance. Transportation infrastructure is critical, but large scales of marine and air transportations are not positive in terms of economic performance. Stricter government response to COVID-19 negatively moderates economic performance by GVC backward participation and transportation infrastructure. Originality/value - The spread of COVID-19 is causing a severe collapse of GVC and transportation. This study empirically verifies the moderating effects of the government stringency on GVC and transportation. Previous studies usually discuss a positive impact of GVC and transportation size on economic performance. However, this study aims to show various challenges behind GVC participation and large scale transportation.

Applications of Computer Graphics for Transportation Studies (교통연구에 있어서의 컴퓨터 그래픽스 응용에 관한 연구)

  • 김광식;최윤철
    • Journal of Korean Society of Transportation
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    • v.4 no.2
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    • pp.59-72
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    • 1986
  • The purposes of this paper are to review the concept and system structure of computer graphics and to discuss the applicability of computer graphics technique as an analysis tool in transportation studies. To do this, several applications of computer graphics used for analyzing and solving transportation system problems were described and illustrated. The results indicate that computer graphics are found to be powerful aids to the analysis and design of transportation systems that typically involve large data bases and several interacting components. The results also indicate that computer graphics can be a powerful tool for aiding planner, decision maker and citizen in making it easier to explain and interpret information through mapping and graphic display.

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Limits of Logit Models in Transportation Policy Evaluation : Expected Utilities in Logit Models (교통정책평가에 있어 Logit모형의 한계 : Logit모형에 있어서의 기대효용)

  • 조중래
    • Journal of Korean Society of Transportation
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    • v.5 no.1
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    • pp.25-31
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    • 1987
  • This article shows that, in the logit models, the(conditional) expected utility of the decision makers choosing an alternative is invariant across all alternatives. This property of the logit model implies that the logit model can not explain the distributional wealfare effects of a transportation policy (or transportation investment) among different alternatives, and thus the logit model is not proper for evaluating transportation policy in equity aspects.

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A Proposal for the Evaluation Method Improvement of Transport Investment with the Transportation Policy Change (교통정책변화에 따른 교통투자평가방법 개선에 관한 제언)

  • 방연근;김현웅
    • Proceedings of the KSR Conference
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    • 2000.05a
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    • pp.43-50
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    • 2000
  • This paper shows the recent changes of national transportation policies in some developed countries and argues that the evaluation method of the effect of transportation investment on national economy should be improved to reveal real impact of the investment. The evaluation method should develope effective performance indicators of the goals set in national transportation policy. To estimate correctly the magnitude of transportation services in national economy, the evaluation method also provides a way to measure in-house transportation services and to overcome the limits of marginal effect equal equation.

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A Public-Transportation Guidance System using the GIS and the GA

  • Jun, Chul-Min
    • Proceedings of the KSRS Conference
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    • 2003.11a
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    • pp.21-23
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    • 2003
  • Developing a public transportation guidance system requires the following aspects: (i) people may change transportation means not only within the same type but also among different modes such as between buses and subways, and (ii) the system should take into account the time taken in transfer from one mode to the other. This study suggest the framework for developing a public transportation guidance system that generates optimized paths in the transportation network of mixed means including buses, subways and other modes. For this study, the Genetic Algorithms are used to find the best routes that take into account transfer time and other servicetime constraints.

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Railway strategies for introducing intelligent transportation system (철도분야 지능형교통체계 도입 전략)

  • Lee, Jun;Moon, Dae-Sub;Eom, Jin-Ki;Kim, Dong-Hee;Jin, Il-Kyoung
    • Proceedings of the KSR Conference
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    • 2011.05a
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    • pp.1544-1549
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    • 2011
  • Transportation Efficiency Act of 2009 System National Integrated Transportation System Efficiency Act and the revised Road Traffic in the center of the Intelligent Transportation Systems rail, sea and air transport sector is expanding in various areas to promote business and Industry is planning to. Accordingly, the introduction of Intelligent Transportation Systems Outlook and Direction of the railway sector and to provide a comprehensive introduction of Intelligent Transportation Systems rail sector has raised the need. In this paper, the introduction of Intelligent Transportation Systems rail sector strategy is presented as follows. First, the rail users a convenient rail-centric information system used. Second, the reliability and value-added operating system built for the creation of high-tech rail. Third, crime and accidents are implemented in a safe railway. The results of this paper, the railway sector through the national Intelligent Transportation Systems to develop and introduce strategies to provide operational direction is expected to be present.

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A Study on the Energy Saving Plan by the Utilization of transport System -Concerned to Cargo transportation- (수송체계의 효율화를 통한 에너지절약방안에 관한 연구 -화물윤송을 대상으로-)

  • 이석태
    • Journal of the Korean Institute of Navigation
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    • v.9 no.2
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    • pp.27-41
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    • 1985
  • The transportation productivity is the throughput of utility per locations of resources and is able to be brought forth by using transportation mode. Therefore, Oil energy is necessary for using the transportation mode that is mainly consisted of four parts trucks, railroad, ship and aircraft, and Oil quantity used for such modes is not respectively same. Noticing Such a Point, the purpsoe of this paper is to reaserch the transportation mode of convertable cargoes and to minimize energy consumption quantity by adopting such a mode. We must ttend to Energy-Intensity, Transportation, Distance and cargo quantity for selecting the transport mode to energy consumption and the minimization of transportation energy consumption is concluded in the next LP Problem. As above mentioned, we can find the solution of Xij by the LP when Xij is transportation cargo per routes, and fullfil the minimization of Energy Consumption.

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Using the GA in the Public-Transportation Route-selection Process

  • JUN, Chul-min
    • Korean Journal of Geomatics
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    • v.3 no.2
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    • pp.123-128
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    • 2004
  • As the applied fields of GIS are expanded to the transportation, developing internet-based applications for transportation information is getting attention increasingly. Most applications developed so far are primarily focused on guidance systems for owner-driven cars. Although some recent ones are devoted to public transportation systems, they show limitations in dealing with the following aspects: (i) people may change transportation means not only within the same type but also among different modes such as between buses and subways, and (ii) the system should take into account the time taken in transfer from one mode to the other. This study suggest the framework for developing a public transportation guidance system that generates optimized paths in the transportation network of mixed means including buses, subways and other modes. For this study, the Genetic Algorithms are used to find the best routes that take into account transfer time and other service-time constraints.

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The Transportation Size and the Location of Distribution Centers in a Distribution System (물류시스템에서 수송크기와 물류센터의 위치)

  • Chang, Suk-Hwa
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.30 no.3
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    • pp.12-19
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    • 2007
  • This paper is to determine the transportation size and the location of distribution centers to minimize logistics cost in a distribution system where products are transported from the distribution centers to the retailers. Logistics cost consists of the fixed cost of distribution centers, the transportation cost from the distribution centers to the retailers and the inventory holding cost in the retailers. The logistics cost is affected by the transportation size and the location of distribution centers. The transportation size affects transportation cost and inventory holding cost. The location of distribution centers affects the transportation cost. A mathematical model is formulated and the algorithm is developed. A numerical example is shown to explain the problem.