• International Commerce and Information Review
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• v.6 no.3
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• pp.63-79
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• 2004

Peer-to-peer(P2P) has potential strength and possible factors which enable it to develop toward a new business by supplementing the limitation of the existing central server-type network. In various business sectors, various attempts have already been made to apply P2P. The computing power which was possible to be formed through peer-to-peer networking will become a powerful tools for expanding toward new business area depending the utilization methods by sector. Although the technology-centric P2P concept is a major interest now, its development direction will head toward service-centric P2P concept for satisfying desires of end-users(individual peers) for reliable contents and improving their purchasing convenience. But the solution requisites should be solved for the efficient application of P2P to business such as the establishment of and supplement for the industrial standard and legal system for P2P, the enhancement of peers recognition of P2P. Presently e-commerce using P2P is being implemented by a few enterprises locally by means of B2C. But if many enterprises enter this type of e-commerce, and the standardization of peer programmes, goods and documents is made, it will be able to be extended to B2B. Also it seems that it can be utilized in international transactions as well as in domestic transactions. So there is much room for the application of P2P to be extended further. Also there has been presented the necessity for related industries to support their work with theories and for academic studies to be made actively to set the direction of its development. It is hoped that multi-angled and in-depth studies on the utilization of P2P and various attempts to application of it to business be made on the basis of this study. For the development of P2P, continuous study and attempts are needed. The field of P2Ps application is very large and it will become a powerful tool, depending upon its application methods.

• Journal of Arbitration Studies
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• v.18 no.2
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• pp.173-199
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• 2008

A letter of credit transaction of the preexistence have been raising one's head fraud charge problem as a result of abusing the principles of independence and abstraction. Every society has certain rules and conventions which it regards as important and most of people in any society. The paper document means a document in a traditional paper form. The eUCP credit must specify the formats in which electronic records are to be presented. In these present times, the issuance of documentary credit are performed by the SWIFT(Society for Worldwide Inter bank Financial Telecommunication) system. The eUCP have been written to allow for presentation completely electronically or for a mixture of paper documents and electronic presentation. Presentation is deemed not to have been made if the Beneficiary's notice is not received. An electronic record that cannot be authenticated is deemed not to have been presented. The e-UCP is the supplement of current existing UCP but is superior to UCP under some circumstances. The document shall include an electronic record. The place for presentation of electronic records means an electronic address. The current e-UCP is not clear on this matter. We have to note followings in case of presenting the documents electronically and applying the e-UCP. There are three principles in the letter of credit transaction, that is to say, independence and abstraction, document dealing, strict compliance. IN the electronic letter of credit, these principles are called as independence and abstraction, electronic document dealing, strict compliance.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.9 no.2
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• pp.455-461
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• 2008

Enhanced Distributed Channel Access (EDCA) is a channel access scheme adopted by the IEEE 802.11e draft standard for QoS-enabled wireless local area networks. It classifies traffic into separate Access Categories (ACs) and achieves service differentiation by allowing each AC to have its own values of channel access parameters. This paper proposes a scheme to dynamically adapt the EDCA parameters to traffic environment so that they both maximize the throughput of non real-time traffics and meet the delay and throughput constraints of real-time traffics. For this purpose, we develop a design algorithm for efficient exploration of the EDCA parameter space. Using the algorithm, we derive a Pareto curve fur delay-throughput trade-off in each anticipated traffic environment. The Pareto database can then be used to optimally adjust the parameter according to the traffic environment and administrative policies. Simulation results show that compared with the default parameter configuration, the proposed scheme is better for delay, throughput guarantee and can improve the throughput of non real-time traffics by 12% on average.

• Journal of Electrochemical Science and Technology
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• v.2 no.1
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• pp.45-50
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• 2011

A series of expanded graphites is prepared from graphite oxide by changing the heat-treatment temperature, and their lithiation/de-lithiation mechanism and rate performance are examined. A featureless sloping profile is observed in their charge-discharge voltage and dilatometry profiles, which is contrasted by the stepwise plateau-like profiles observed with the pristine graphite. With an increase in the heat-treatment temperature from $250^{\circ}C$ to $850^{\circ}C$, the interlayer distance becomes smaller whereas the electric conductivity becomes larger, both of which are resulted from a removal of foreign atoms (mainly oxygen) from the interlayer gaps. The expanded graphite that is prepared by a heat-treatment at $450^{\circ}C$ delivers the best rate performance, which seems to be a trade-off between the $Li^+$ ion diffusivity that is affected by the interlayer distance and electrical conductivity.

• Journal of Digital Convergence
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• v.16 no.12
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• pp.109-122
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• 2018

This study investigates factors to disturb the e-Learning persistence of adult learners based on a case study of Cyber University students located in Seoul Korea. Main findings of our research show that economic burden, shortage of studying hours, digital literacy problem, perceived isolation, inefficient interaction between lecturer and student, and support of family are primary factors to influence the persistence of online education in a Cyber university. From our case study, we recommend to improve the scholarship system, and supplement the offline special lectures at weekends in order to alleviate perceived isolation. A novelty of this paper is that economic burden is highlighted to influence the persistence of adult learners.

• International Commerce and Information Review
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• v.16 no.1
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• pp.227-245
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• 2014

It was ten yeas ago that Bolero Bill of Lading was been introduced on the base of efforts of UN and CMI to solve the crisis of Bill of Lading, but Electronic Bill of Lading is not utilized in practice owing to the problems to be settled. Bolero Bill of Lading is not in widespread use owing to absence of collaboration model between Bolero and e-Trade service providers in each nation in the early stage. In the situation that Bolero Bill of Lading is not utilized in practice, Korean Commercial Law regulates the designation of the registration authority of Electronic Bill of Lading. Therefore, the Minister of Justice designated KTNET as Registration Authority of Electronic Bill of Lading and KTNET opened the e-B/L Korea (www.eblkorea.or.kr) to provide the Electronic Bill of Lading service to domestic trade community. But there is many problems in supplying the Electronic Bill of Lading service by the e-B/L Korea in compared with Bolero Bill of Lading. These problems are related with the characteristics of designation of Registration authority of Electronic Bill of Lading. Therefore the purpose of this paper is to contribute to the activation of Electronic Bill of Lading domestically by studying the designation of Registration authority of Electronic Bill of Lading in Korea and finding the characteristics of the designation and the issues and problems regarding the characteristics.

• Journal of the Korean Society of Marine Environment & Safety
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• v.25 no.7
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• pp.841-850
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• 2019

The Korean government has designated speed-limit zones and speed limits in 19 ports and 3 routes to ensure safe navigation and transportation. However, the speed limit differs from port to port, no practical means of management exist. This often leads to violation of the speed limit. Additionally, ship collisions due to human error continue to occur. First, the study analyzed marine accidents that occurred at trade ports and fairways. The result of the analysis revealed the occurrence of 1344 accidents (average 269 cases per year) from 2014 to 2018. Five hundred sixty three accidents involved fishing boats, whereas, merchant vessels were involved in 508 cases. Second, the efficacy of the application of voice and message warnings to GPS plotters and electronic chart display and information system (ECDIS) was reviewed, and these were proposed as measures to inform vessel operators of the hazards of speed limit violation. Third, experts' opinions from relevant agencies and navigation system manufacturers were consulted and it was found that the proposed warning function was technically implementable. The findings are expected to help reduce human error among ship operators and establish a Korean e-navigation system.

• International Commerce and Information Review
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• v.2 no.1
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• pp.1-28
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• 2000

IT 혁명으로 전자적인 활동이 전 사회의 중심 축으로 이루어지고, 또한 컴퓨터를 이용한 정보처리와 통신기술의의 눈부신 발달에 힘입어 기업의 Business에 커다란 변화를 초래하게 되었다. 특히, 인터넷이라는 환경하에서 전자상거래는 급속하게 성장하고 있으며, 기업은 전자상거래 모델을 앞다투어 개발하면서 새로운 E-Business 환경을 수용하고 있다. 또한 기업은 무역업무에 이러한 전자상거래를 도입하면서 국제간 거래의 활성화를 위해 노력하고 있지만, 국채간 사이버 무역이 안고 있는 여러 가지 애로점을 가지고 있다. 그 중에서 국제간 전자결제에 과한 문제이다. 인터넷을 이용한 무역업무를 실행시키고, 활성화하기 위한 하나의 결제방안을 제시해 보면 제3자에 의한 결제 시스템으로서 인터넷 서비스 제공업자, S/W 개발업체, 은행과 신용카드회사를 비롯한 금융기관 등은 결제시스템을 구축하는 방안이 강구될 수 있다. 또한 이 시스템에서는 다양한 판매자의 제품을 소개하고 일정 시간간격 또는 특정 구매자의 총누적 거래대금이 일정수준에 이를 때에 결제함으로써 신용카드를 지불수단으로 사용하는 경우에도 소액거래를 지원할 수 있다. 또한 전자결제제도가 성립되기 위해서는 전자자금거래의 규제를 위한 법 제도적인 측면의 정비가 시급하다. 따라서 각종 거래의 결제에 관한 법적관계는 물론 금융관련 법률을 기본으로 하여 새로운 접근방안을 마련해야 할 것이다. 이와 같은 사항들을 고려함으로써 사이버 환경의 활성화를 도모할 수 있다.

• 한국디지털정책학회:학술대회논문집
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• 2006.06a
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• pp.45-53
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• 2006

Ever since the computer came into being in early 20th century, rapid development of the information technology has led to the opening of the ubiquitous age where daily works can be done anywhere, anytime, and with any devices. The information technology has drawn attention from Customs around the world as a key means to fulfill multi-faced responsibilities of strengthening regional cooperation in the international trade, simplifying clearance procedures, expediting logistics flow, and ensuring security in the global supply chain. Korea Customs Service, which began the informatization effort by establishing the electronic export declaration system in 1992, completed the 100% electronic clearance system in 2000, with a number of countries now conducting benchmarking studies on the successful use of IT by KCS. This paper is to address the changes brought to the Customs administration in the information age, the progress and achievement of the Customs informatization as a proactive strategy to deal with the changing environment, and the exportation to overseas administration of the e-clearance system of KCS which strives to become the global leader of Customs informatization. The exportation. in particular, will not only lead to increased foreign currency earnings and shared know how, but also create an opportunity to reflect Korea's system in the standardization of Customs procedures around the world.

• The Journal of Information Technology
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• v.3 no.2
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• pp.1-12
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• 2000

This study attempts to represent schemes to cope with the challenge of internet-based e-commerce. There are unexpectable changes in the international Logistics industry. First, Bolero project is introduced to exchange trade documents and data via the internet. It acts as a neutral third party to ensure secure delivery and receipt of information and provides a legal framework. Secondly a number of leading International logistics companies and constituent members have made an effort to establish the portal site to connect the constituent members concerning by the same cyber environment. This study reviews the current status on this trend and points out a number of issues originated from the trend and represents the way of globalization in the international logistics industry.