• Advances in nano research
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• v.16 no.5
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• pp.521-529
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• 2024

The integration of nanoparticles into various industries has spurred interest in understanding their impact on logistics and transportation systems. In this study, we investigate the effect of nanoparticles on the economic aspects of railway logistics transport using a mathematical model. By incorporating factors such as transportation costs, time efficiency, and environmental considerations, we aim to assess the overall economic feasibility of integrating nanoparticles into railway logistics operations. Through mathematical modeling and analysis, we explore how the introduction of nanoparticles affects cost-benefit analyses, resource allocation, and decision-making processes within railway logistics. Our findings provide valuable insights into the economic implications of nanoparticle integration in railway transport, offering potential strategies for optimizing logistics operations and enhancing overall efficiency and sustainability.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2002.04a
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• pp.279-282
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• 2002

In this study, mine tailing buffer zone in cathode was used to overcome precipitation of heavy metals that reducing remediation efficiency during electrokinetic remediation. Test results showed that heavy metal transportation affected by initial soil pH which was verified through traditional test and enhanced test with two type of soils. With mine tailing enhanced method 39% of extraction rate was achieved in surface soil and significant transportation trend was observed in deep soil.

• Proceedings of the KSR Conference
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• 2007.11a
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• pp.1744-1759
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• 2007

This study intended to identify the problems of the railroad which are raised as one of the 21C next-generation but to define the direction for the absence of the national policy and examine the competitiveness of railway transportation which is a Green Network with low environmental destruction and high energy efficiency as the continuable means of transportation for the 21st century with superiority to energy crisis caused by high oil price, conclusion of the Kyoto Protocol for worsened air pollution, and reduced cost of traffic jam.

• Journal of Korean Society of Transportation
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• v.35 no.2
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• pp.91-104
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• 2017

In this study, we discuss the modeling of domestic transport sector using GCAM(Global Change Assessment Model). The GCAM is one of integrated assessment models widely used in internationally modeling community, and applied for the evaluation of IPCC 5th Report. Nevertheless, it is noted that there are a considerable number of problems in its application to domestic transport sector. First, the base year information of GCAM for detailed transportation service demand is found not consistent with national statistics. Second, the transportation sector simulation results do not properly reflect the past trends of service demand. Thus, the base year service demand is carefully matched with the detailed national statistics. In addition, the existing models were checked and modified so that the simulation results of service demand can accurately reflect past trends of national statistics. As a result, it is reported in detail how the current GCAM simulation results are corrected and how the trend of past transportation sector service demands is properly reflected. This study is expected to be useful as a basic tool for future scenario analysis for transportation policy, technology evaluation and greenhouse gas reduction measures.

• Journal of Korean Society of Transportation
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• v.28 no.2
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• pp.161-169
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• 2010

The amount of energy consumed by a transportation system in a city is influenced not just by a transportation system itself but also by city's spatial character. Yet there have been very limited studies on this subject. This study investigates the factors that influence the energy consumption by a transportation system and city's spatial character. The model of an urban area confined within a definite boundary is assumed in order to develop the relationships between the energy consumption and the transportation system. Various assumptions on the character of a city and activities are made. An equation for computation of the energy consumption is derived with such factors as modal split, densities of residents and workers, as well as technological development. Using the equation, sensitivity analyses are performed in order to identify the relationships between energy consumption and influencing factors. It is found that the modal split is the most powerful factor that determines the energy consumption by the transportation system. Yet it is also found that the densities of residents and workers and the technological factors are very important in determining the amount of energy consumption as well.

• Proceedings of the KOR-KST Conference
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• 2007.11a
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• pp.191-200
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• 2007

• Proceedings of the KOR-KST Conference
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• 2007.02a
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• pp.97-105
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• 2007

• Proceedings of the KOR-KST Conference
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• 2007.05a
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• pp.593-599
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• 2007

• Journal of the Korean Society for Aviation and Aeronautics
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• v.6 no.1
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• pp.99-109
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• 1998

• Journal of Electrical Engineering and Technology
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• v.11 no.5
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• pp.1305-1310
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• 2016