• Title/Summary/Keyword: IT Logistics

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An Improvement of Backhaul Transport with the Mathematical Model of Inter-Terminal Transportation Using Buffer Space (완충지역을 활용한 타부두 환적 컨테이너 운송 모형의 복화율 개선 효과 분석)

  • Park, Hyoung-Jun;Shin, Jae-Young
    • Journal of Navigation and Port Research
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    • v.46 no.3
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    • pp.236-242
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    • 2022
  • Busan Port is operated separately by a number of terminal operators, resulting in a large number of ITT (Inter-Terminal Transportation) volumes. The occurrence of ITT volume causes various problems such as additional transportation cost, empty truck trips, truck delays and terminal congestion, weakening Busan Port's competitiveness. Among them, the empty truck trip problem is a representative factor, that exacerbates the cost problem of the ITT operation at Busan Port. But the ITT backhaul rate at Busan Port remains low. To strengthen the transhipment competitiveness of Busan Port, it is necessary to increase the ITT backhaul rate. In this paper, to improve ITT backhaul rate, we present a mathematical model for maximizing backhaul transport using buffer space. And we analyzed the improving effects of backhaul transport using buffer space through experiments based on actual operating data.

Effects of Market Diversity on Performance of Exporting Companies: An Inverted U-shaped Relationship

  • Lee, Jungeun;Kim, Chang-Bong;Lee, Dong-Jun
    • Journal of Korea Trade
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    • v.24 no.8
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    • pp.121-132
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    • 2020
  • Purpose - The principle aim of this study is to further investigate the relationship between market diversity and export performance. We examine the benefits and costs of geographic market diversity regarding the number of countries exported to by firms on their export performance. Based on the financial risk reduction model and the entry costs model, we propose a way to incorporate the costs and benefits aspects of market diversity. Design/methodology - To empirically investigate our research question, the curvilinear relationship between market diversity and export performance, we built a secondary panel data set between 2015 and 2019, containing 17,863 observations of Korean exporting companies. A generalized least squares panel estimator with fixed effects was employed to test the hypothesis, and the statistical package, Stata 14, was used. Findings - Our main findings are as follows: As market diversity increases, export performance increases because exporters can diversify and reduce financial risks in export markets. However, the relationship between the two does not grow. As it peaks, the entry costs increase due to the high market diversity, thereby outweighing the benefits, leading, eventually to decrease in the export performance. Consequently, there is an inverted U-shaped relationship between market diversity and export performance. Originality/value - In the export and trade literature, the impact of market diversity on export performance has not been addressed yet, despite the importance of this subject. Many scholars have assumed a positive linear relationship between the two, considering only the decrease in market risks as the number of overseas markets increases, without examining the increase in the entry and management costs. Therefore, our study contributes by providing a new perspective for analyzing the characteristics and outcomes of market diversity.

A Study on Port Improvement with the Activation of Cross-Border E-Commerce: A Study of Pyeongtaek Port

  • Choi, Hyuk-Jun;Jung, Hyun-Jae;Lee, Dong-Hyon
    • Journal of Korea Trade
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    • v.23 no.7
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    • pp.34-44
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    • 2019
  • Purpose - The purpose of this study is to present what the port of Pyeongtaek, the hub of Korean trade with China, should improve in the current situation, wherein the e-commerce trade volume between Korea and China is increasing due to the development of online technology. Design/methodology - In this study, through prior research and expert interviews on e-commerce and port activation between borders, we derived the main improvement factors for 1) Administration and Systems, 2) Facilities, 3) Transport, and 4) Manpower, and selected 12 detailed variables for the major improvement factors. To identify the relative importance of the major improvement factors, the Analytic Hierarchy Process (AHP) method was applied, and a survey was conducted among 15 related experts. Findings - As a result, among the 12 detailed variables, Composition of Association (0.267) was the first factor to be improved, followed by Incentive Support (0.143) and E-Commerce Cluster (0.131). Based on these analyses, the main implications of this study are, first, in the current situation where the cross-border e-commerce market is growing, Pyeongtaek Port needs to form a consultative body among the government, local governments, and related businesses in connection with cross-border e-commerce and develop various support policies for the e-commerce market. Second, it will have to be able to provide differentiated services from competing ports by establishing e-commerce market-oriented clusters. Originality/value - In existing related studies, various improvements were presented to revitalize trade in line with the growth of the cross-border e-commerce market. However, with regard to most cross-border e-commerce businesses, one-dimensional improvement measures, such as improvement of payment systems, improvement of customs clearance services, and promotion of human resources, are presented in a piecemeal manner. In other words, none of the studies have proposed the importance and priority of each measure in terms of both the forward-looking and efficient allocation of resources, which is the purpose of this study. Therefore, this study contributed politically, practically, and academically by presenting countermeasures for ports to revitalize cross-border e-commerce and presenting strategic priorities using quantitative analysis methods.

A Study on the Priority of Site Selection for Hydrogen Vehicle Charging Facilities in Seoul Using a Market Demand Prediction Model (시장수요예측 모델을 활용한 서울시 수소차 충전시설의 입지선정 우선순위에 관한 연구)

  • Jin Sick, Kim;Kook Jin, Jang;Joo Yeoun, Lee;Myoung Sug, Jung
    • Journal of the Korean Society of Systems Engineering
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    • v.18 no.2
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    • pp.140-148
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    • 2022
  • Hydrogen is expected to be widely applied in most sectors within the current energy system, such as transportation and logistics, and is expected to be economically and technologically utilized as a power source to achieve vehiclebon emission reduction. In particular, the construction of hydrogen charging station infrastructure will not only support the distribution of hydrogen electric vehicles, but also play an important role in building a hydrogen logistics system. Therefore, This paper suggest additional charging infrastructure areas in Seoul with a focus on supply according to the annual average growth rate (CAGR), centering on Seoul, where hydrogen vehicles are most widely distributed. As of February 2022, hydrogen charging infrastructures were installed in Gangseo-gu, Gangdong-gu, Mapo-gu, Jung-gu, and Seocho-gu in downtown Seoul. Next, looking at the number of hydrogen vehicles by administrative dong in Seoul from 2018 to 2022, Seocho-gu has the most with 246 as of 2022, and Dongjak-gu has the highest average growth rate of 215.4% with a CAGR of 215.4%. Therefore, as a result of CAGR analysis, Dongjak-gu is expected to supply the most hydrogen vehicles in the future, and Seocho-gu currently has the most hydrogen vehicles, so it is likely that additional hydrogen charging infrastructure will be needed between Dongjak-gu and Seocho-gu.

A Study on Changes of Land Use in the Local Port City - Focused on Yeosu in Jeonnam Province - (지방 항구도시의 토지이용 변화에 관한 연구 - 전라남도 여수시를 중심으로 -)

  • Chung, Kumho
    • Journal of the Korean Institute of Rural Architecture
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    • v.25 no.1
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    • pp.9-16
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    • 2023
  • This study is on the formation and the development process of urban space by referring to the literature in Yeosu where is the important location in logistics & transportation and maritime since the Japanese colonial period. There are many factors and results of the development process in Yeosu by the opening port, railroads, loads and industries. The purpose of this study is to understand the characteristics of the formation process of urban space and the characteristics of physical space in Yeosu. The results are as follow; The urban formation and development process in Yeosu where was a small fishing village in the 1910s is largely divided into four processes. Formation: the population increased due to constructions such as of a railroad, a port, and roads and there were many reclamations around the center of the old city center in the Japanese colonial period. Stagnation: There was no urban development due to stagnation, war, and the Yeo-sun Incident. Expand: the industrialization of the Yeocheon Industrial Complex and Gwangyang Steel and other areas around Yeosu led to a surge in Yeosu's population. To cope with this, the city was expanded through three land readjustment projects and the development of large-scale residential complexes. Decline and Remodeling: Yeosu's urban space declined due to the decline of fisheries and the decrease in marine and railway logistics. And the expansion and improvement of the transportation network for hosting the Yeosu World Expo increased the accessibility of the old city center, transforming it into a tourist city using cultural heritage and nature.

A DEVELOPMENT OF RFID/USN-BASED INTELLIGENT EQUIPMENT FOR CONSTRUCTION SUPPLY CHAIN MANAGEMENT

  • Tae-Hong Shin;Su-Won Yoon;Sangyoon Chin;Soon-Wook Kwon;Yea-Sang Kim;Cheolho Choi
    • International conference on construction engineering and project management
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    • 2009.05a
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    • pp.472-478
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    • 2009
  • The scopes of the supply chain management in construction projects has expanded from the field management focusing on field storage, transportation, and lifting to the whole supply chain from the materials to field. The expansion of the supply chain management can raise the possibilities of leaner production, which enables shortened lead time of the difficult-to-operate materials, and prevents the work interference or delay. However, the expanded management range requires more information and management than an existing management style currently used for factory production of iron frame, curtain wall, PC, etc. In addition, there are limitations that expand the existing management style into the new supply chain management in construction projects and therefore it is required to automate the existing management style in order to extend the management range. The objective of this study is to propose the process and equipment that can manage the supply chain of the materials which range from the factory production to the field storage based on RFID/USN techniques, introducing small-sized transportation equipment(intelligent pallet), the vehicle tool kit(intelligent trailer), and in-and-out management equipment(Gate Sensor) as a prototype to effectively develop the appliances for operating the proposed process, and present the application possibility of the appliances. The full paper will present then the test results that the proposed appliances for the supply chain management automatically transmit and receive the generated information between the appliances or the appliance and sever under various wireless network circumstances such as zigbee, wibro, Wi-Fi, and CDMA.

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Consolidated transportation model for recycling of end-of-life electronic household appliances in South Korea (폐가전제품 재활용을 위한 공동회수모형)

  • Hur, Tae-Young;Won, Joong-Yeon;Kim, Hyun-Soo;Han, Dae-Hee;Han, Woo-Chul
    • Journal of the Korea Society of Computer and Information
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    • v.14 no.7
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    • pp.161-168
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    • 2009
  • In this paper, we studied about an consolidated transportation model to transport EOL (end-of-life) electronic household appliances for recycling in South Korea. The objective is to minimize the total traveling distance of the vehicles transporting EOL electronic household appliances collected by local authorities and major manufacturers' distribution centers to assigned R/C(recycling center) in South Korea. Current reverse logistics for recycling EOL electronic household appliances is operated by local authorities and major manufacturers individually, and it is inefficient for the following reasons: excessive traveling distance, transportation cost, low truck capacity utilization, and so on. The presented model is developed to solve this problem. We apply a integer programming to solve this problem and present computational results using actual field data.

Metro Station Clustering based on Travel-Time Distributions (통행시간 분포 기반의 전철역 클러스터링)

  • Gong, InTaek;Kim, DongYun;Min, Yunhong
    • The Journal of Society for e-Business Studies
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    • v.27 no.2
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    • pp.193-204
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    • 2022
  • Smart card data is representative mobility data and can be used for policy development by analyzing public transportation usage behavior. This paper deals with the problem of classifying metro stations using metro usage patterns as one of these studies. Since the previous papers dealing with clustering of metro stations only considered traffic among usage behaviors, this paper proposes clustering considering traffic time as one of the complementary methods. Passengers at each station were classified into passengers arriving at work time, arriving at quitting time, leaving at work time, and leaving at quitting time, and then the estimated shape parameter was defined as the characteristic value of the station by modeling each transit time to Weibull distribution. And the characteristic vectors were clustered using the K-means clustering technique. As a result of the experiment, it was observed that station clustering considering pass time is not only similar to the clustering results of previous studies, but also enables more granular clustering.

Analysis on Factors Determining Reliability of FTA Origin Certificate : Focusing on Characteristics of Firm, Product and Country (FTA 원산지 증명 신뢰성 결정 요인 분석 : 수출기업, 물품, 수출국가 특성을 중심으로)

  • AN, Yong-soon;CHO, Hyuk-soo
    • The Journal of shipping and logistics
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    • v.35 no.2
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    • pp.245-264
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    • 2019
  • With the first agrement in 2004, Korea(ROK) has been one of the most active countries participating in FTA. Companies should meet some requirements to use preferential tariff benefits of FTA. For example, it is required for firms to fulfil the origin criteria and direct transportation principles. This study is designed to provide important factors determining reliability of FTA Origin Certificate. In specific, characteries of firm(trade experience, professional expertise), country (FTA participation, economic development) and product(processing level, value pricing) are investigated as determinants of how trust FTA origin certificate. According to the theoretical foundation and previous studies, this study made 6 hypotheses. SEM(Structural Equation Modeling) was used to test empirically the hypothesized relationships among variables. The empirical findings show that trade experience, professional expertise and FTA participation are important determinants. In other words, firms can trust more FTA Origin Certificate by trading partners with more trading experiences and professional expertises located in countries where participate actively in FTA.

Impact of Country Risks in Countries along the 'One Belt and One Road' on China's Overseas Direct Investment ('일대일로' 연선국가의 국가 리스크가 중국 해외직접투자에 미치는 영향)

  • Choong Bae Lee;Jong Chul Lee;Yongqiang, Xu
    • Korea Trade Review
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    • v.46 no.3
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    • pp.119-133
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    • 2021
  • After 'Zhou Chuchu (走出去, Go global)' in the early 2000s, and with the 'One-to-One Road' initiative in 2012, China's Overseas Foreign Direct Investment (OFDI) has increased significantly, resulting in high academic interest. The purpose of this study is to analyze the impact of national risks of home country on China's OFDI by using data from 49 countries along the 'One-to-One Road' between 2007 and 2018, and to compare the factors of national risks that attract investment from the world. As a result of the study, market economy companies' perceptions of national risks are mostly negative, so risk acts as a deterrent to investment. On the other hand, national risks of home countries have had positive effects on China's OFDI, which would mean that Chinese investors, mostly state-owned enterprises have a high tendency to invest in regions or countries with high national risks. Other economic factors, such as the size of the investment partner country's market, GNI per capita, and trade openness, had a positive (+) effect, and natural resources had a negative (-) effect on China's OFDI. As dummy variables, FTA, which is an economic and diplomatic factor, SCO, which is a political and diplomatic factor, and bordering which is a geographical factor, were also found to have a positive (+) effect. This study implies the investment pattern of China's OFDI is due to the characteristics of China's unique geopolitical and economic system, and it is judged to be influenced by political and strategic factors, especially the aspects led by state-owned enterprises.