• Communications of the Korean Institute of Information Scientists and Engineers
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• v.16 no.5
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• pp.19-25
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• 1998

본 고에서는 전자상거래에서의 지불 방법과 전자상거래에서 사용되는 거래정보의 보안기법에 대해 살펴보았다. 전자지불의 유형으로는 전자 대금 이체, 디지털 캐시 및 이의 현실적인 형태인 E-cash등이 있다. 이러한 거래 방법과 더불어 전자상거래 시스템의 보안은 비즈니스 측면에서 매우 중요하다. 이를 보장하기 위해 non-SET 기반으로 대칭적 암호화 기법, 비대칭적 암호화 기법 및 SET을 이용한 암호화 거래 방법을 살펴보았다. 전자상거래 시스템의 구성요소는 구매자, 판매자 및 중개인으로 이루어진다[8]. 전자상거래의 보안에 관한 요소는 다른 학문적인 요소와는 달리 그 실용적인 성격과 파급효과로 인하여 세계 각국의 정부 기관이나 연구소에서 주도권 쟁탈을 위한 노력을 기울이고 있다. 이러한 전자상거래의 요소는 전자상거래의 기술을 연구하고 제시하는 쪽 보다는 현실적인 필요성에 의해 금융기관이나 판매자들에 의해 주도적으로 개발되는 경우가 많다. 컴퓨터와 네트워크의 급속한 발전 속도와 영역의 확장은 앞으로의 전자상거래가 국가나 사회에 어떤 영향을 미칠지를 예측하기 어렵게 한다. 다시 말하면 앞으로 전자상거래가 사회, 경제적 또는 외교적으로 미칠 영향은 매우 크리라 예상된다. 이러한 전자상거래 분야에서 주도권을 유지하기 위해서는 이와 관련된 정부부처, 연구소, 각급 기관 및 업체들이 서로 협력하고 조율하여 국제적인 표준과 보조를 맞추고, 국내 기술과의 접목을 가능하도록 협조와 자원이 필요하다. 전자상거래 관련 보안 및 지불 기술의 확보는 국가 경쟁력 확보 및 차세대 거래 수단으로서의 전자상거래 시장에서 기회를 확보할 수 있는 초석이 될 것이다.

• Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
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• v.9 no.9
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• pp.819-831
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• 2019

The types of properties traded in modern times are rapidly increasing due to changes in consumption patterns. However, as the type of properties traded increases, estimation about the value of properties may become inaccurate. There is a problem that it is difficult for consumers to estimate the right value and the variety of trading forms makes it difficult to guarantee the reliability of value estimation As access to a variety of properties has expanded, these shortcomings are considered to be a factor that hinders the stability of the shared economic market. In this paper, to resolve this issue, we present a blockchain-based property contract service through a trusted broker. The developed service registers trusted brokers into smart contracts on the Ethereum blockchain and use them for the evaluation and contract process of properties. In addition, registered contents, proposals and contracts of properties are stored in the blockchain to ensure the reliability of the contract process. Every step of the contract process is stored in the smart contract, recorded in the transaction history of the blockchain, ensuring the reliability of the stored data. In addition, the entire process of registration, proposal, and contract is driven by smart contracts designed by state machine technology, enabling users to more securely control the contract process.

• Proceedings of the Korean Society of Computer Information Conference
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• 2018.01a
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• pp.35-36
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• 2018

에스크로는 개인 간의 물품 거래를 중개하여 허위 물품 등록 및 대금 횡령과 같은 사기를 방지하는 안전 결제 서비스이다. 그러나 신뢰할 수 없는 에스크로 서비스 사로 인한 사기 발생 및 에스크로의 서비스 구조와 같은 태생적인 한계로 인한 이용률 저하와 같은 한계점들은 건전한 사용자들의 이용률을 저하시킨다. 본 논문에서는 이런 문제점들을 극복하기 위해 블록체인 플랫폼중 하나인 이더리움을 이용하여 개선된 에스크로 서비스 모델을 제시하고자 한다.

• Journal of Distribution Science
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• v.8 no.1
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• pp.21-33
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• 2010

The ICT(information & communication technology) led to a dramatic change of floral distribution service, a phase of competition between wholesales and retail stores, and distribution channels in floral industry. It was expected that a role of the intermediaries in this industry would have reduced due to the improvement of transaction process by ICT. However, the ICT made to overcome a regional limit of the floral retail distribution service leading to an increase in sales and enlargement of the stores. And even it made possible to bring out another type of intermediaries such as private associations. This case study focuses on what kinds of efforts the floral wholesale distributors have made to enable a distribution process more smoothly between the wholesale distributors and retail stores through the information system, and what the failure factors in adopting the information system have been. This paper is also to examine how the wholesale distributors have changed themselves to gain dominant positions in distribution channels. As a result of the study, it was found that the intermediaries mostly failed in successfully achieving the distribution channel innovation through the information system because of several main reasons. FLOMARKET Inc. tried to innovate a distribution channel to obtain high quality goods through consolidating a wholesale distribution market in that segregated both floral joint market from free markets. after implementing the information system with consideration of the failure factors, FLOMARKET Inc. was able to minimize goods in stock and make a major purchase of various goods. In addition, it made a possible pre-ordering process and an exact calculation of purchasing goods so they could provide their products with market price in real time, which helped for the company to gain credits from their customers. Also, FLOMARKET Inc. established the information system which well suited to its business stage in order to deal with a rapidly changing distribution environment. It's so obvious that the transaction processing system of FLOMARKET Inc. definitely helped to share information among traders more seamlessly and smoothly in realtime, standardize goods, and make a transaction process clearer. Besides, the transaction information helped the wholesale distributors and retail stores to make more strategic decisions in their business because through the system they enabled to gather the marketing intelligence information more easily and convenient. If we understand that the floral distribution market is characterized by the low IT- based industry, it's worth to examine a case study proving that the information system actually increases the productivity of the transaction process in the floral industry.

• The Journal of Society for e-Business Studies
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• v.6 no.1
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• pp.1-16
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• 2001

This paper describes a preliminary investigation of contracts with a view towards automating the process of contract match-making. A novel approach based on exploiting Standard Form Contracts(SFC) is described. The approach is shown to be implementable with current technology. A second approach based on Standard Contract Clauses(SCC) which overcomes some of the limitations of Standard Form Contracts, is briefly outlined. The flexibility offered by this approach however, is accompanied by a considerable increase in the complexity of contract match-making. Both Standard Form Contracts and Standard Contract Clauses based match-making point towards an exciting area of future research.

• The Journal of Society for e-Business Studies
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• v.4 no.3
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• pp.119-137
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• 1999

The World Wide Web(WWW) has provided multi-media cyberspace for electronic markets where suppliers and demanders can do global electronic business with each other directly and conveniently. There are two contradictory views on the roles of intermediaries in electronic markets. One says we may not need intermediaries in doing business because suppliers and demanders can contact with each other directly in electronic markets. The other thinks that the intermediary function may be vertically decomposed from the company's internal value chain because it can be done more efficiently through networks by external intermediaries. Intelligent software agent is a new emerging technology in the field of computer science. An intelligent agent can support and do actions on behalf of users on computer networks. We think that this technology can be utilized to implement more efficient cybermediaries for electronic commerce. This paper proposes an XML-based framework for financial software agent, which selects financial products best fitted for the customer's needs in electronic market environment.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2003.05a
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• pp.905-912
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• 2003

최근 웹서비스에 대한 관심이 커지면서 제조업체별 다양한 웹서비스가 상용화되고 있으나 호환성의 문제와 XML이 가지고 있는 의미적 관계표현에는 한계를 드러내고 있다. 또한 웹을 통한 개방형 환경과 거래 참여자간 다양한 거래요구가 발생하면서 상호협력이 중요시 되고 있다. 그러므로 본 연구에서는 표준화와 자동화라는 문제를 해결하기 위한 방안으로 시맨틱 웹을 기반으로 하여 중개자 중심의 BtoB 웹서비스를 제안하였다. 이를 위해 전자상거래 프레임웍을 비교분석하고 시맨틱 웹을 기반요소를 이용하여 웹서비스를 모델링하였다. 온틀로지를 지원하는 기술적 언어로 표현하여 에이전트간의 웹서비스 구현을 위한 가능성을 알아보고 시맨틱 웹이 BtoB 웹서비스에 어떠한 영향을 미칠 수 있는지 제안하였다.

• Journal of the Economic Geographical Society of Korea
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• v.19 no.3
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• pp.457-473
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• 2016

This research investigates that role of space-based social capital presented in Dapsimni auto-parts shopping area considering Korean auto-parts industry and the regional characteristics of retailing industrial cluster. For this, it went through the process with in-depth interview and surveys of the owner of Dapsimni, social capital of retailing industrial cluster studied using Lin(1999)'s social capital model by separating formation, accessibility and mobilization of it. The result is that auto-part sellers in Dapsimni make themselves space-based social capital, which provides the profit from certain area: strengthening auto-parts of transaction cost and information exchange among them, creating new market for selling auto-parts. This meant that main factor sustaining the characteristic of retailing industrial cluster despite gradually decline of its role.

• Journal of the Economic Geographical Society of Korea
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• v.22 no.4
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• pp.438-457
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• 2019

The main purpose of this paper is to identify the entry types and locational determinants of North Korean workers in cross-border regions between North Korea and China. More specifically, the paper has attempted to divide the entry type of them in the regions into two; 1) entry via transactions between Chinese traders with North Korea and North Korea trade companies, and 2) entry via transactions between Korean-Chinese middlemen and North Korean trade companies. Also, it has analyzed main factors of their locational determinants in the spatial contexts of the regions. There have been changes in two perspectives in terms of the entry paths and types of them in accordance with the transformation of characteristics of United Nations sanction against North Korea from 'call-upon' to 'decide' after UN Security Council Resolution 2094 in 2013. Firstly, main agents who have dealing with North Korean trade companies which have right to dispatch North Korean workers have been changed from Chinese traders into Korean-Chinese brokers who are specialized in the introduction of North Korean workers with one-stop service from visa administrative to labor managements. Secondly, there has been a transfer of North Korean workers in the regions from formal to informal workers who has been admitted into China with a short stay or a tourist visa, and then remained illegally to be employed in China. Therefore, as demands on service which is able to guarantee the security of North Korean informal workers and their managements have increased, Korean-Chinese brokers have been stimulated in the regions after the operation of real international sanctions against overseas North Korean workers. In addition, the main factors of their locational determinants in cross-border regions between North Korea and China are could be analyzed in three perspectives; 1) an increase in real wages in accordance with the reform of the Chinese social insurance system after 2011, 2) the structural vulnerability of labor markets in the regions, 3) the utilization of stable and manageable workers.

• Journal of Internet of Things and Convergence
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• v.8 no.1
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• pp.11-16
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• 2022

Efforts to incorporate blockchain into various fields are continuing as cryptocurrency transactions become more active. Blockchain has the characteristic that once recorded facts cannot be modified or deleted. Due to these characteristics, the use in the field of recording and proving certain facts, such as voting or proof of ownership, is attracting attention. In this paper, users who want to participate in the transaction process using private blockchain, one of the types of blockchain, are divided into real estate brokers, building owners, and purchasers (lessors), and roles are assigned to each user. In addition, we would like to propose a system to increase reliability through the participation of institutions. Through this, we intend to not only present a real estate transaction system that prevents damage from real estate fraud related to false sales and fraudulent contracts, but also enhances reliability and contributes to finding ways to utilize blockchain in the future.