• Title/Summary/Keyword: Global Logistics

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The Spatial Characteristics of Clinic Distribution by Specialty Subject (진료 전문과목별 개원 의원의 공간적 분포 특성)

  • Seo, Wee-Yeun;Lee, Keum-Sook
    • Journal of the Economic Geographical Society of Korea
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    • v.10 no.2
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    • pp.153-166
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    • 2007
  • This study attempts to investigate the spatial characteristics of medical hospital distributions in Korea. For the purpose we examine the inter- and intra regional variations in the distributions of clinics by specialty subject. In particular, we analyze the distribution patterns of Location Quotients of clinics for 12 specialty subjects in Seoul. Medical services tend to be concentrated on the large cities, especially in the Metropolitan Seoul Area. In particular, clinics and medical doctors as well as large scale general hospitals have been strongly concentrated on the Metropolitan Seoul area. These circumstace may be related with the fact that medical hospitals are established and operated by private sector in Korea, and thus they attempt to find their location where they can get maximum profit. The distribution patterns of clinics of 12 specialty subjects can be classified to several characteristic patterns. In particular, clinics of plastic surgeon tend to be strongly concentrated on the Gangnam area in Seoul. Finally, clinics of plastic surgeon tend to be located on the areas near the subway stations along the subway Line 2 and Line 3 in the beginning. The existence of plastic surgeons turns out to have significant role on determining the location for the newly opening plastic surgeons in the later. Therefore, their agglomeration has been getting more strongly.

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A Study of Themes and Trends in Research of Global Maritime Economics through Keyword Network Analysis (키워드 네트워크 분석을 통한 세계 해운경제의 연구 주제와 동향에 대한 연구)

  • Jhang, Se-Eun;Lee, Su-Ho
    • Journal of Korea Port Economic Association
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    • v.32 no.1
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    • pp.79-95
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    • 2016
  • This study identifies themes and trends in maritime economics and logistics by examining 303 papers published in international journals from 2000 to 2014 using keyword network analysis. Network analysis can be used because the collected data follow Zipf's law and the power law. Utilizing the degree centrality and betweenness centrality, we find the important keywords in each five year period and determine the importance of shared keywords. To further explain keyword centralities, we invented a Delta-C algorithm to show the trends of keywords over time. We found that degree centrality is useful for identifying important research themes in each period because it is mainly concerned with the number of connections. On the other hands, betweenness centrality is useful to determine the unique themes that emerge in each of the specific periods.

A Study on the Demand Analysis of Sharable Resources in the Busan New Port Container Terminal (부산신항 컨테이너터미널 내 공유가능 자원들의 수요분석 연구)

  • Nam, Jung-Woo;Sim, Min-Seop;Cha, Jae-Ung;Kim, Joo-Hye;Kim, Yul-Seong
    • Journal of Navigation and Port Research
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    • v.45 no.4
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    • pp.186-193
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    • 2021
  • To enhance the competitiveness of the Busan Port in accordance with changes in global shipping and port industry trends, the Busan New Port is promoting step-by-step integration and developing a port resource-sharing platform. However, inefficient resource-sharing can cause unnecessary additional costs or impede port productivity, so accurate supply and demand matching of shared resources is required. In this study, the supply and demand of port resources were investigated for employees of Busan New Port and North Port, and port resources that could be ideally shared through IPA(Importance Performance Analysis) were analyzed. As a result of analyzing the equipment in the port, Yard Tractor, Reach Stacker, and Top Handler were the top considerations, and for facilities in the port, berths and aprons, empty container yards, and refrigerated container yards were the most important considerations. As for the data in the port, gate status, equipment specifications, and berth and apron conditions were the top considerations.

Effects of the Addition Pro-oxidant on the Physical Properties and Degradation of the Petroleum- derived Plastic Film (산화촉진제 첨가가 플라스틱 필름의 물성과 분해에 미치는 영향)

  • Kihyeon, Ahn;Jae-Suk, Choi;Roun, Lee;Jung-Gu, Han;Tae-Hoon, Ro;Hyung Woo, Park
    • KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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    • v.28 no.3
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    • pp.165-170
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    • 2022
  • If petroleum- derived plastic like a bio-based plastic was degradation, awareness like a global warming and environmental disasters will be decreased. Plastic film was produced by adding ferric ions according to concentration by using a pro-oxidant in polyolefin resin. Changes in tensile strength, elongation, and molecular weight were evaluated according to the UV irradiation time. Increasing the amount of ferric ions resulted in more significant declines of physical properties, and also resulted in greater changes in molecular weight. After 100 hours of UV irradiation, tensile strength declined significantly in the film containing pro-oxidant as compared to the control. A similar effect was also observed in terms of elongation. The film containing pro-oxidant showed a 73.8% decrease in molecular weight after 100 hours of UV irradiation. The appropriate use of pro-oxidant can not only degrade plastic film but also control the time of degradation at the petroleum-derived plastic films. Further studies are necessary to investigate the conditions of plastic film degradation.

A Study of e-RTGC Introduction Effects in the Container Terminal : Based on D Container Terminal Case Study (컨테이너터미널에서 e-RTGC의 도입효과에 관한 연구: D터미널 사례를 중심으로)

  • Choi, Hyung-Rim;Lee, Seung-Hon;Park, Yong-Sung;Kang, Moo-Hong;Kim, Hee-Yoon;Choi, Ki-Nam;Joo, Yi-Don;Ha, Jeong-Su
    • Journal of Korea Society of Industrial Information Systems
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    • v.14 no.5
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    • pp.289-296
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    • 2009
  • All over the world more and more attention is being paid to green management which enables environment-friendly sustainable development. To keep up with these global trends and in response to the government's "low carbon green growth" policy, many efforts are being made in the port and logistics in order to drastically reduce carbon emissions and save operating expenses. To this end, the engine power source of the cranes in the container terminal is being replaced with electricity from fossil fuel. Among those cranes, especially e-RTGC has been proved to be practical and excellent in its performance through many previous studies. However, no empirical study has yet been made on its introduction effects when e-RTGC has been introduced to the container terminal. In the meantime, however, many domestic container terminals have introduced e-RTGC, and so some data have been accumulated for further research. Under these circumstances, this study has tried to make an empirical study through the case study of D container terminal, checking the restriction factors to be considered at the time of eURTGC introduction, and analyzing its introduction effects and problems. We have high expectations that this study will provide key consideration factors and empirical analysis data to the decision makers who plan to introduce an e-RTGC system, and also will be used as a reference to the development direction of e-RTGC.

A Study of Film Crews' Needs to Participate in Overseas Production : On the Basis of Binary Logistics Analysis and Marginal Effect Method (영화제작인력들의 해외활동 참여욕구에 관한 연구 : 이분형 로지스틱 분석 및 한계효과분석을 중심으로)

  • Lee, Hee-Jin
    • Journal of Korea Entertainment Industry Association
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    • v.13 no.4
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    • pp.27-37
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    • 2019
  • This study empirically identified and sought implications for the degree of desire by film crews to participate in overseas production and the factors affecting them, based on the recognition that the active participation of skilled film crews in overseas production and joint ventures can be an alternative to the poor treatment of domestic film industry sites and the reduction of job losses due to problems with career barriers. In order for respondents to verify research questions, binomial logistic and marginal effects analysis using SPSS and STATA, the data obtained by surveying 402 film crews operating in various areas. The notable findings are as follow: First, about 65%(263 people) of the respondents expressed their desire to participate in overseas activity, indicating that a considerable number of film crews are looking forward to opportunities with overseas productions. Second, major factors that have a positive effect on film crews' need to participate in overseas activities have been found to be professionality, artistic identity, Korean Wave persistence, and career barriers. In other words, the higher the professionality, the more clearly the identity of the artist, the more positive expectations of the possibility of the Korean Wave continuing, and the more serious the problem of career disability, the clearer was the desire to participate in overseas production and joint-work activities.

Evaluation of Traffic Vibration Effect for Utilization of Abandoned Mine Openings (휴·폐광산 채굴 공동 활용을 위한 교통 진동 영향 평가)

  • Hyeon-Woo Lee;Seung-Joong Lee;Sung-Oong Choi
    • Tunnel and Underground Space
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    • v.33 no.2
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    • pp.95-107
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    • 2023
  • In this study, the effect of repeated traffic vibration on the long-term stability of mine openings is analyzed for re-utilization of abandoned mine galleries. The research mine in this study is an underground limestone mine which is developed by room-and-pillar mining method, and a dynamic numerical analysis is performed assuming that the research mine will be utilized as a logistics warehouse. The actual traffic vibration generated by the mining vehicles is measured directly, and its waveform is used as input data for dynamic numerical analysis, As a results of dynamic numerical analysis, after 20,000 repetitions of traffic vibration, the mine openings is analyzed to be stable, but an increase in the maximum principal stress and an additional area of plastic zone are observed in the analysis section. As shown in the changes of displacement, volumetric strain, and maximum principal stress which are measured at the mine opening walls. It is confirmed that if the repeated traffic vibration is continuously applied, the instability of the mine openings can be increased. Authors expect that the results of this study can be used as a reference for basic study on utilization of abandoned mine.

Analysis of productivity and efficiency for mega container ships: Case of Busan Port (초대형 컨테이너 선박의 생산성 및 효율성 분석 -부산항을 중심으로-)

  • Jong-Hoon Kim;Won-Hyeong Ryu;Shin-Woo Park;Hyung-Sik Nam
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2023.05a
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    • pp.121-122
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    • 2023
  • As containerized maritime transport began in earnest, the size of container ships has steadily increased, and recently, the operation of 24,000 TEU-class vessels has become regular. However, concerns about the efficiency and productivity of such mega container ships from a port operational perspective have continued to be raised. The 10th Busan International Port Conference requested an in-depth study on the trends of container ship enlargement by analyzing the order status of ultra-large container ships from major global liners. Generally, the factor that drives the upsizing of ships is the realization of economies of scale that lowers transportation costs per TEU, which leads to a higher level of cost reduction per unit transportation compared to the increase in fuel consumption due to transporting large amounts of cargo with a single ship. However, it is necessary to examine whether this trend of container vessel enlargement is feasible for port operations. To this end, this study compares and analyzes the productivity and efficeiency of different ship sizes to evaluate the effect of ship size on port operations.

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Analysis of productivity and efficiency for mega container ships: Case of Busan Port (부산항 터미널별 선박 규모에 따른 선석 생산성 및 항만 효율성 비교분석)

  • Jong-Hoon Kim;Won-Hyeong Ryu;Shin-Woo Park;Hyung-Sik Nam
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2023.11a
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    • pp.72-73
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    • 2023
  • As containerized maritime transport began in earnest, the size of container ships has steadily increased, and recently, the operation of 24,000 TEU-class vessels has become regular. However, concerns about the efficiency and productivity of such mega container ships from a port operational perspective have continued to be raised. The 10th Busan International Port Conference requested an in-depth study on the trends of container ship enlargement by analyzing the order status of ultra-large container ships from major global liners. Generally, the factor that drives the upsizing of ships is the realization of economies of scale that lowers transportation costs per TEU, which leads to a higher level of cost reduction per unit transportation compared to the increase in fuel consumption due to transporting large amounts of cargo with a single ship. However, it is necessary to examine whether this trend of container vessel enlargement is feasible for port operations. To this end, this study compares and analyzes the productivity and efficeiency of different ship sizes to evaluate the effect of ship size on port operations.

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A Study on Social Value Creation in Social Enterprise by Sector - Focusing on Social Enterpreise in Incheon (업종별 사회적기업의 사회적가치 창출에 관한 현황 연구 - 인천의 사회적기업을 중심으로)

  • Yong-Gu kim;Jae Ho Kim
    • The Journal of the Convergence on Culture Technology
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    • v.9 no.6
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    • pp.1119-1126
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    • 2023
  • This study measured the social value of social economy enterprises in Incheon Metropolitan City using the Social Value Index (SVI) developed by the Korea Social Enterprise Promotion Agency. The results showed that the social value orientation of the business activities of SSEs averaged 9.3 out of 15 points, and their innovation efforts were 8.0 out of 10 points. The average monetary and non-monetary social contribution efforts of SSEs was 5.1 out of 10. When comparing the average sales and social value scores by industry, the manufacturing sector shows that social enterprises have higher average sales and social value orientation of business activities, but lower social return efforts. Social work facility management and business support services have high average sales, but low social value orientation of business activities and efforts to make monetary or non-monetary social contributions. On the other hand, education services; arts, sports, and leisure-related services; and publishing, video, broadcasting, communication, and information services have lower average revenues but higher social value orientation of business activities. These SVI indicators are well utilized by local governments, but not yet by the central government. In the future, governments and public institutions should reflect the differences between sectors when formulating policies for social enterprises.