• Journal of Korea Port Economic Association
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• v.35 no.3
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• pp.61-72
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• 2019

In order to enhance the competitiveness of the container shipping industry and promote its development, based on the empirical analyses using multivariate time series models, this study aims to suggest a few strategies related to the dynamics of the container shipping market. It uses the vector autoregressive (VAR) and vector error correction (VEC) models as analytical methodologies. Additionally, it uses the annual trade volumes, fleets, and freight rates as the dataset. According to the empirical results, we can infer that the most exogenous variable, the trade volume, exerted the highest influence on the total dynamics of the container shipping market. Based on these empirical results, this study suggests some implications for ship investment, freight rate forecasting, and the strategies of shipping firms. Concerning ship investment, since the exogenous trade volume variable contributes most to the uncertainty of freight rates, corporate finance can be considered more appropriate for container ship investment than project finance. Concerning the freight rate forecasting, the VAR and VEC models use the past information and the cointegrating regression model assumes future information, and hence the former models are found better than the latter model. Finally, concerning the strategies of shipping firms, this study recommends the use of cycle-linked repayment scheme and services contract.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 1999.04a
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• pp.435-435
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• 1999

• Journal of Navigation and Port Research
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• v.36 no.10
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• pp.911-916
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• 2012

The purpose of this study is to review and suggest coastal shipping policies for introduction of WIG craft into domenstic passenger shipping market. Two Korean companies are leading in the development of WIG craft as an innovative sea transportation vehicle, and it is awaiting for commercialization. WIG craft is expected to be commercialized from coastal passenger market and we used AHP method to investigate the major factors and its' priority for smooth market entry. The results shows that priorities are on the WIG craft legislation, dock installation and operation, port state control, and pilot hiring and training, craft maintenance, and ship's certification in order.

• The Korean Journal of Air & Space Law and Policy
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• v.24 no.1
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• pp.91-118
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• 2009

In the Republic of Korea, Regional Airlines from Jeju Air and Hansung Airlines have recently entered the domestic market to compete with the existing Legacy Airlines. In addition many of newly established regional low cost carriers like Air Busan, JeanAir, Easter Airline, are preparing to enter the jungle market. These circumstantial changes have come about as transportation competitiveness are getting weak in the market due to simultaneous expansion of surface modes such as a new opening of high-speed rail and extension of highways. The jumbled market entry by regional low cost carriers makes an enormous influence not only in managing transport network of existing carriers but also for the domestic policy of aviation authorities. It is too early to judge whether they would succeed or not. It is necessary to analyze the network operation of these regional carriers launching domestic routes and preparing to launch short distance international routes under the rapid changing market circumstances such as introduction of KTX or decrease in domestic routes by Legacy Airlines. Many regional airlines are to launch the routes connecting Korea-China-Japan, if they could ensure long-haul international routes successfully, it would follow that the difference between Legacy Airlines and Regional Airlines would decrease more and more, which would result in appearance of the $3^{rd}$or $4^{th}$Legacy Airlines The purpose of this study is to analyze the introduction of low cost carriers by regions and economic regional carrier network for non-scheduled air transportation market by taking a look at the regional airlines transportation network in the early stage of the domestic air transport market. For this purpose, cost and profit structure and management effect of transportation cost will be analyzed by comparing the presently operated routes of regional airlines with those of Legacy Airlines. And also demonstrative analysis demanded by the actual market will be achieved through surveys from experts, the actual airlines and travel agencies to build up transportation network.

• Journal of Intelligence and Information Systems
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• v.9 no.3
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• pp.65-79
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• 2003

In general, the extraction and recognition of identifier is very hard work, because the scale or location of identifier is not fixed-form. And, because the provided image is contained by camera, it has some noises. In this paper, we propose methods for automatic detecting edge using canny edge mask. After detecting edges, we extract regions of identifier by detected edge information's. In regions of identifier, we extract each identifier using contour tracking algorithm. The self-generation supervised learning algorithm is proposed for recognizing them, which has the algorithm of combining the enhanced ART1 and the supervised teaming method. The proposed method has applied to the container images. The extraction rate of identifier obtained by using contour tracking algorithm showed better results than that from the histogram method. Furthermore, the recognition rate of the self-generation supervised teaming method based on enhanced ART1 was improved much more than that of the self-generation supervised learning method based conventional ART1.

• The Journal of Aerospace Industry
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• s.69
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• pp.88-98
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• 2007

서머타임은 1784년 벤자민 프랭클린에 의해 최초 제안된 이후, 제1차 세계대전중인 1916년 5월 1일 독일과 오스트리아에서 최초 도입되었고, 현재 전세계적으로 86개국 이상이 서머타임을 실시하고 있다. 우리나라의 경우 1948년 처음 도입하여 1960년까지 시행 하였으며, 이후 1987년 산업의 고도화와 올림픽 개최에 맞추어 동 재도를 재실시하였으나 여러가지 긍정적 영향에도 불구, 권위주의 정부의 국민의견 수렴이 없는 일방적 결정과 당시 미성숙된 노동자 근무여건, 특히 올림픽 경기의 외국 TV 방송시간에 맞추기 위한 올림픽용이라는 비판 등 국민적 거부감으로 시행 2년 후인 1989년 폐지되었다. 최근 사회적 여건의 성숙에 따라 서머타임 도입이 재 논의 되고 있으며, 서머타임이 도입될 경우 약 31만명의 외국인 관광객 추가 방한과 연간 약 4,340억원 이상의 추가 관광수입을 얻을 수 있을 것으로 예상된다. 특히 항공운송산업의 경우 100만명 이상의 국제선 탑승객 증가와 약 1,537억원의 항공운임 수입증가 효과를 거둘 수 있을 것으로 예상된다. 또한 항공운송산업 직접연관산업에서 약 400여명, 간접연관산업에서 3,000여명 등 항공운송산업 전체에서 총 3,400여명의 고용 효과를 유발할 것이다. 반면 서머타임 도입에 따라 CRS, GDS, 항공기 스케쥴, 운항·항행 시스템 및 각 공항별 Curfew 조정이 필요하나, 이미 전세계 항공 선진국 대부분이 수십여년간 서머타임을 도입하고 있어, 서머타임 도입에 따른 失이나 혼란보다는 得과 효용이 더 클 것으로 생각된다.

• The Journal of shipping and logistics
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• v.34 no.4
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• pp.615-635
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• 2018

Using data from 2008 to 2017, this study analyzed the financial characteristics of offshore freight shipping companies in Korea, categorized by vessel type, and their impact on business performance. The analysis showed an upward trend in the overall debt ratio of offshore freight transport companies and differences in the financial characteristics of each vessel type as well as the major factors affecting business performance. In particular, the significant factors affecting the ROA performance of the business are the size of business and debt ratio in the LPG line; the growth rate in the bulk line; the size of business, debt ratio, and year in the general freight line; and the size of business, growth rate, entertainment expense rate, debt ratio, and year in the full container line. Therefore, each shipping company needs to recognize differences in key financial factors affecting its performance based on vessel type, implement proactive measures, and diversify its vessel portfolio.

• 전기의세계
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• v.28 no.10
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• pp.9-16
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• 1979

근래 우리나라의 국민소득이 높아짐에 따라 가전제품의 수요가 늘고, 중화학공업의 발달에 따라 전력수요가 급격히 증가하고 있다. 이에 반하여 석유가는 매년 증가하고 있으므로 기력발전소를 지양하고 대용량의 원자력, 양수발전소, 석탄발전소가 건설되고 있는 경향이 있다. 발전소는 입지조건상 해안 또는 강변에 위치하고 있으며 수요지와는 거리가 멀고 또는 계통의 안전도(Stability), 신뢰도(Reliability)를 높이기 위하여 154KV와 345KV 송전선으로 전계통을 연계하고 있다. 송전선의 전력운송능력을 증대시키기 위하여 복도체 또는 사도체로 하고 있으며 전선도 ACSR에서 TACSR로 하는 나라도 있다. 현재 미국에서는 765KV Canada에서는 735KV 송전선으로 운전되고 있으며 장차 1500KV 송전선도 곧 실용화된다고 한다. 이에 따라 송전선의 지지물인 철탑도 대형화되어가고 높이도 증가하게 되어 이의 제작및 건설비가 막대하게 들게되며 앞으로는 용지확보도 더욱 어렵게 되어 송전선의 회전수를 2 또는 4회선으로 건설하여야 될것이다. 송전선철탑설계는 종래에는 Cremona도식해법에 의하여 설계하였으나 이의 작도및 하중조건이 많아지면 부재의 정확한 설계하중을 산출하는 데는 많은 시간과 노력이 필요하다. 이러한 불편을 헤소하기 위하여 Ritter의 수치해석법(moment 방법)을 이용한 전산화 및 설계이론에 대하여 소개하고자 한다.

• Journal of the Korean Society for Railway
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• v.15 no.5
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• pp.517-523
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• 2012

Double Stack Train(DST) is being used variously around USA and Canada. The greatest advantage of the DST is mass transportation without extending the length of freight train and number of cars. So the DST system can be a kind of innovative train to increase the competitiveness of rail logistic business. As the domestic rail logistic increase, for enhancement of environment friendly green transportation amount, the DST needs more for efficiency. In this study, as the alternative way to introduce the DST to the Kyungbu Line, it's investigated the extensibility of rail freight with the relation of rail fare discount and examined the necessity of pilot business to the Kyungjeon Line which was expected comparatively lower cost. If the DST system is introduced to the Kyungjeon Line, the cost of mass transportation can be much lower and then the comparativeness of rail transportation will be increased, therefore logistic companies can have some margin additionally. In the result of survey to the related companies, if rail transportation fare is 37.7 % cheaper than current road transportation fare, the modal shift can be transferred by maximum 100%.

• Journal of the Korean Society for Railway
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• v.3 no.3
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• pp.10-21
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• 2000

한국철도는 1899. 9. 18. 노량진∼인천간 33.8 km를 개통한 이래 1905. 1. 1. 경부선 영등포∼초량간 431.2 km. 1906. 4. 3. 경의선 용산∼신의주간 527.8 km를 개통하여 1912. 6. 15. 부산∼중국장춘간 직통열차를 운행하였고. 1927. 8. 1 시베리아 경유 아시아. 유럽 각국간과 여객 및 화물운송을 개시한 이래 1945. 8. 15. 2차 세계대전이 종전할 때까지 18년간 부산-서울-평양-신의주-중국과 시베리아를 경유하여 유럽각국과 연결 운행되었다.(중략)