• Journal of Navigation and Port Research
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• v.42 no.6
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• pp.529-538
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• 2018

The port industry is an important national industry which significantly affects Korea's imports and exports which are centered on economic structure. For instance, the Port of Busan, which handles 75% of domestic container freight volume, is expected to become increasingly critical for container liner routes. For this reason, there have been continued efforts to expand freight service to attract international freight volume. This study analyzes the structural characteristics of the port network connected to the Port of Busan by analyzing the pattern of the container liner route from 2012 to 2016 by using social network analysis. According to the Port of Busan's liner route network, the port with the highest degree of centrality, closeness centrality, and betweenness centrality was found to be the Port of Singapore. The comparison of Busan's annual container handling rank by countries and the port center network analysis of Port of Busan rank was found to be different. As a result, it was established that China's East Port, which occupies a high percentage of the volume of cargo handled by Port of Busan, is not a hub port of Busan when viewed on the Busan's container terminal liner network. In addition, even if the number of Port of Busan container liner service increases, it is estimated that the vessels to be added to the fleet will be limited to small to medium sized, or that Busan port has characteristic of a feeder port for the Port of Singapore, according to the network.

• Korean Journal of Plant Resources
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• v.32 no.1
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• pp.45-52
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• 2019

In the process of adapting climate change, the government needs to provide policy and technical support necessary for growing promising crops imported from abroad. Therefore, this study was conducted to survey and analyze the conditions of growth of imported foreign crops and to derive response tasks. As a result, tropical and subtropical vegetables were cultivated 18 crops in 920 farms in 321 ha area (in 2015 year). The cultivation scale decreased in the order of Curcuma aromatica, Momordica charantia, Asparagus aethiopicus, Allium hookeri and Herbs. Tropical and subtropical fruits were cultivated 9 crops in 264 farms in 106.5 ha area (in 2015 year). Special and medicinal crops introduced abroad cultivated 10 crops in 753 farms in 276.3 ha area (in 2015 year). The cultivation scale decreased in the order of Curcuma longa, Glycyrrhiza uralensis, Lepidium meyenii and Moringa oleifera. For the stable settlement of domestic growth of tropical and subtropical crops introduced abroad, there should be safety and economic feasibility in terms of the cultivation environment according to the domestic culture adaptation test. Consideration needs to be given to the use of locally grown products in Korea, the securing of distribution and sales markets, and the competitiveness of imported products.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2016.10a
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• pp.256-259
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• 2016

The growth of mobile devices in Internet of Things (IoT) leads to a number of intelligent buildings related IoT applications. For instance, home automation controlling system uses client system such web apps on smartphone or web service to access the home server by sending control commands. The home server receives the command, then controls for instance the light system. The gateway based RESTful technology responsible for handling clients' requests attests an internet latency in case a large number of clients' requests submit toward the gateway increases. In this paper, we propose the design tasks of the IoT gateway for handling concurrency events. In the procedure of designing tasks, concurrency is best understood by employing multiple levels of abstraction. The way that is eminently to accomplish concurrency is to build an object-oriented environment with support for messages passing between concurrent objects. We also investigate the performance of event-driven architecture for building IoT gateway using node.js on one side and communication protocol based message-oriented middleware known as XMPP to handle communications of intelligent building control devices connected to the gateway through a centralized hub. The Node.JS is 40% faster than the traditional web server side features thread-based approach. The use of Node.js server-side handles a large number of clients' requests, then therefore, reduces delay in performing predefined actions automatically in intelligent building IoT environment.

• Journal of Korea Port Economic Association
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• v.35 no.2
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• pp.21-36
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• 2019

To ensure that Korea continues to grow, past governments have been consistent in following a policy of advancing into Russia, Mongolia, and Eurasia. The northern economy can expect to achieve synergistic growth because its economic structure complements that of Korea, which has high energy demand and industrial development. There is also an opportunity to accelerate the growth of the China-Russia-Mongolia economic corridor, which is based on Russia's Look East Policy, China's One Belt One Road, and the Mongolian Steppe Road initiative. The Korean government is pursuing a New Northern Policy to achieve the goal of economic cooperation and peace building with other nations, including North Korea; this policy succeeds the Northern Policy pursued by the previous government. As international economic cooperation requires transportation infrastructure, the demand for shipping, which offers more advantages than road and rail transportation, will increase; thus, it is necessary to prepare for it. Korea's port cities, which have a port that serves as the nodal point for maritime transportation, need to prepare for the New Northern Policy. In this paper, the long-term development of Seosan-Daesan port in the was planned and the North Korea's opening-op plan was considered in accordance with the New Northern Policy. Because international cooperation between the government and the provincial cities is required, cooperation with the Port Authority is needed, along with the proactive attitude of Seosan City, Chungcheongnam-do. The Seosan-Daesan port, which is the center of the liquid energy cargo center, can become the base of the New Northern Policy Region; further, the port can be an opportunity to establish its position as a peaceful economic hub on the west coast of Korea.

• The Journal of the Korea Contents Association
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• v.22 no.2
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• pp.22-34
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• 2022

This study examines the forms and current status of online performance content production in the field of the performing arts through diversified video media platforms. For this, it studied the leading case of Cirque du Soleil Entertainment and analyzed the unique brand value innovation elements of Cirque du Soleil, the background and current status of the digital hub platform of "Cirque Connect", and its various sub-contents that have diversified original contents. Digital platform applications and sub-content production in the field of the performing arts require an understanding of the needs of the public, who are familiar with media content appreciation, and strategic planning that takes into consideration everything from the initial stages of performance planning to the creation of varied sub-contents. This will promote the improvement of sub-content quality and increase the product value of digital contents in the performing arts through distinctions made from other various forms of cultural and artistic contents. environments in which information from various perspectives related to performance works can easily be accessed through online platforms will enhance the popularity of the performing arts field and allow the performing arts industry to expand its base in rapidly changing cultural enjoyment methods. For the performing arts field to be competitive within cultural trends that are being diversified, the most important tasks to be completed are gaining brand value innovation that enhances the artistic and cultural value of performance works and based on this, producing various sub-contents.

• Korean Association of Arts Management
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• no.51
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• pp.191-219
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• 2019

Adoption of applicable law for the international trade of artworks is closely related to the results of lawsuits. Recently, starting with New York, the hub of the international artworks market, a modern, mixed-law is gradually being adopted more. It is difficult to designate an applicable law of an international trade of artworks through private laws regulations of relevant countries, and the public laws regulations must also be considered in relation to individual benefits and the public benefits to the relevant countries. With regards to the foreign relations issues, Korea's private international law embraces a so-called public order theory, and according to the Section 7 of the Act on the Private International Law and its enactment history, the compulsory provision, which seems appropriate for application to the corresponding matter, applies without regards to the selection of the applicable law. The Civil Act of Korea acknowledges bona fide acquisition of a cultural asset, in principle, if the Cultural Heritage Protection Act is not applicable. Moreover, a lost artwork is also a subject of bona fide acquisition; however, if the relevant artwork is either stolen or lost, the original owner has the right to demand the return of that artwork within 2 years of being stolen or lost according to the Section 250 of the Civil Act. Also, if the buyer purchased from a distributor specializing in the artworks, such as auction, open market or gallery, the buyer could request a compensation of the purchase price from the original owner, and if the buyer purchased through a private transaction, the buyer cannot demand a compensation of the purchase price and must return the artwork.

• The Journal of Bigdata
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• v.8 no.1
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• pp.131-156
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• 2023

The traditional retail industry significantly changed over the past decade due to the mobile and online technologies. This change has been accompanied by a shift in consumer behavior regarding purchasing patterns. Despite the rise of online shopping, there are still specific categories of products, such as "Processed food" in Mongolia, for which traditional shopping remains the preferred purchase method. To prepare for the inevitable future of retail businesses, firms need to closely analyze the performance of their offline stores to plan their further actions in a new multi-channel environment. Retailers must integrate diverse channels into their operations to stay relevant and adjust to the shifting market. In this research, we have analyzed the performance data such as sales, profit, and amount of sales of offline stores by using clustering approach. From the clustering, we have found the several distinct insights by comparing the circumstances and performance of retail stores. For the certain retail stores, we have proposed three different strategies: a fulfillment hub store between online and offline channels, an experience store to elongate customers' time on the premises, and a merge between two non-related channels that could complement each other to increase traffic based on the store characteristics. With the proposed strategies, it may enhance the user experience and profit at the same time.

• Journal of Korea Port Economic Association
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• v.39 no.3
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• pp.1-19
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• 2023

After being kept in bonded areas and bonded logistics warehouses, the level of information sharing and progress confirmation on the process until the cargo is released is insufficient, resulting in disputes and legal disputes related to unauthorized and illegal delivery of cargo. This study attempted to present the introduction of standard electronic documents as a way to solve problems such as delivery practices raised in the delivery of existing imported cargo and legal disputes related to unauthorized illegal delivery among import-related entities. The service provider who manages the bonded warehouse/logistics center in the hinterland of Busan New Port and the shipper service user who use the service were classified into two groups, and a survey was conducted to analyze the difference in perception between the two groups. As a result of the analysis, both groups judged that the introduction of standard electronic documents was necessary, and showed high expected effects in preventing and reducing erroneous shipments and preventing and improving unauthorized and illegal shipments. Discussions between related organizations, related parties, and subjects are needed first to introduce standard electronic documents of the entry and warehouse management system, and the actual participation of related entities such as service providers and service users will play a very important role in establishing the system.

• Journal of the Korea Society of Computer and Information
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• v.28 no.10
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• pp.1-8
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• 2023

If there is a defect in the wheel bearing, which is a major part of the car, it can cause problems such as traffic accidents. In order to solve this problem, big data is collected and monitoring is conducted to provide early information on the presence or absence of wheel bearing failure and type of failure through predictive diagnosis and management technology. System development is needed. In this paper, to implement such an intelligent wheel hub bearing maintenance system, we develop an embedded system equipped with sensors for monitoring reliability and soundness and algorithms for predictive diagnosis. The algorithm used acquires vibration signals from acceleration sensors installed in wheel bearings and can predict and diagnose failures through big data technology through signal processing techniques, fault frequency analysis, and health characteristic parameter definition. The implemented algorithm applies a stable signal extraction algorithm that can minimize vibration frequency components and maximize vibration components occurring in wheel bearings. In noise removal using a filter, an artificial intelligence-based soundness extraction algorithm is applied, and FFT is applied. The fault frequency was analyzed and the fault was diagnosed by extracting fault characteristic factors. The performance target of this system was over 12,800 ODR, and the target was met through test results.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2020.12a
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• pp.66-66
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• 2020

쌈채소나 산나물로 알려진 곤달비(Ligularia stenocephala)의 종자나 종묘는 시장 거래가격이 높게 형성되어 재배농가의 경영비 증가로 이어지고 있다. 또한, 곤달비의 종자는 대개 농가 자가 채종으로 생산되며, 채종재배에 대한 체계가 정립되어 있지 않다. 이에 본시험은 곤달비의 우량종자 생산을 위한 종자결실률 향상 재배조건과 채종적기를 구명하고자 하였다. 전북 남원시 허브산채시험장에서 2018년 10월에 2년생 곤달비 종묘를 포장에 정식하여 시험을 실시하였다. 적정 채종 재배조건을 구명하기 위해 2019년 노지, 하우스, 55% 차광막을 설치한 노지포장에서 곤달비의 개화시기, 개화율, 생육특성, 결실률 등을 조사하였다. 더불어 채종적기를 설정하기 위해서 곤달비 개화 후 50일~100일 동안 7일 간격으로 채종하여 결실률, 채종량, 종자 발아율을 조사하였다. 곤달비의 개화는 하우스재배, 노지재배의 경우 7월 하순, 차광재배는 8월 초순 개화가 시작되었으며, 개화 최성기도 하우스재배와 노지재배가 차광재배와 비교해 15일 정도 일렀다. 하지만 개화 종료 시기는 노지재배가 가장 빨랐으며 하우스재배가 가장 늦었다. 개화율은 하우스재배, 차광재배, 노지재배 순으로 높았다. 개화기 생육특성는 차광재배일 때 초장과 화경장이 가장 컸으며, 화서수와 자방수는 하우스재배가 타 재배방법에 비해 다소 많았다. 곤달비 재배방법에 따른 결실률은 차광재배가 70.1%, 노지재배가 21.9%, 하우스재배가 15.8%이었으며, 채종량은 차광재배의 경우 10a당 39.6kg, 노지재배 4.9kg, 하우스재배 4.6kg이었다. 백립중과 종자길이, 종자너비 또한 차광재배가 타 재배방법에 비해 양호하였다. 채종시기에 따른 결실률은 채종시기가 늦어질수록 높은 값을 가졌으나, 화경당 채종량은 개화 후 70일에 85일 사이에 가장 많았다. 발아율은 노지재배의 경우 개화 후 70일 이후부터 90% 이상으로 높은 발아율을 보였고, 차광재배는 개화 후 65일부터 95% 이상의 발아율을 나타냈으나 하우스재배의 경우에는 개화 후 80일 이후부터 85% 이상으로 발아율이 양호하였다. 따라서 곤달비의 우량종자를 생산하기 위해서는 55% 차광막을 설치한 노지에서 재배하여 개화 후 65일 이후부터 종자가 비산하기 전까지 채종해야 할 것으로 여겨진다.