• Proceedings of the Korean Information Science Society Conference
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• 2007.06d
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• pp.290-295
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• 2007

최근 인터넷의 발달로 디지털 콘텐츠 및 UCC(User Created Contents) 산업이 발전하고 있다. 그러나 이로 인한 부작용도 많이 발생한다. 대표적인 문제는 디지털 콘텐츠의 무단 불법복제나 무료배포행위이다. 이는 디지털 콘텐츠 산업의 성장과 UCC 제작자의 창작의지 를 저해하여 웹2.0시대의 중심인 양질의 콘텐츠 생산을 방해한다. 본 논문에서는 위의 문제를 해결하기 위하여 멀티미디어 콘텐츠의 경매 시스템 과 경매 프로세스를 제시하였다. 본 논문에서는 멀티미디어 콘텐츠에 중고의 개념을 도입하였다. 특히, 모바일 상에서 경매가 가능하도록 새로운 시스템 구조를 제안하고, 멀티미디어 콘텐츠의 경매거래 프로세스를 새롭게 제안하였다. 시스템의 성능 분석 결과 주요 경매프로세스는 성능 분석 과정을 통하여 $\theta$ (logN) 의 정수 배(m)의 시간을 사용하는 알고리즘임을 소개하고 사용자나 콘텐츠의 양이 폭발적으로 증가하는 경우에도 시스템의 성능에 크게 영향을 받지 않는다는 것을 보인다.

• Convergence Security Journal
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• v.7 no.3
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• pp.87-93
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• 2007

We propose a mobile point-of-sale system, which consists of only mobile information terminals and personal computers. The proposed system provides most of functionalities related with resource planning, adminstration and management, provided by medium-scale or large-scale POS systems, with additional functionalities, such as automatic information gathering and management through mobile interconnection, while eliminating the necessity of additional special-purpose devices, such as bar-code systems. The proposed system transmits order information through wireless and wired communication lines, thus allowing real-time sharing of order information among diverse information devices, such as mobile order receiving terminals, main server within stores, monitors and printers located in production lines. Also, the system is able to transfer such detail information produced within stores in real-time to the enterprise-level accounting, sales, logistics, personnel management system, which facilitate enterprise-wide management and administrative decision-making. No additional programs are required for mobile terminals. Order information received by such terminals are entered into databases through web server of main server and that information is again transferred to main server and production line printers. The proposed system can handle all the point-of-sale information and can provide almost of the POS functionalities by simply utilizing wireless internet, personal computers, and mobile terminals without installing specific-purpose peripheral devices. The proposed system can be widely applied to the small-scale stores and will contribute in reducing construction and maintenance cost required for point-of-sale management.

• Journal of Intelligence and Information Systems
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• v.12 no.2
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• pp.125-144
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• 2006

The development of mobile applications is fast in recent years. However, nearly all applications are for messaging, financial, locating services based on simple interactions with mobile users because of the limited screen size, narrow network bandwidth, and low computing power. Processing an algorithm for supporting a group decision process on mobile devices becomes impossible. In this paper, we introduce the mobile-oriented simple interactive procedure for support a group decision making process. The interactive procedure is developed for multiple objective linear programming problems to help the group select a compromising solution in the mobile Internet environment. Our procedure lessens the burden of group decision makers, which is one of necessary conditions of the mobile environment. Only the partial weak order preferences of variables and objectives from group decision makers are enough for searching the best compromising solution. The methodology is designed to avoid any assumption about the shape or existence of the decision makers' utility function. For the purpose of the experimental study of the procedure, we developed a group decision support system in the mobile Internet environment, MOBIGSS and applied to an allocation problem of investor assets.

• Proceedings of the Korea Association of Information Systems Conference
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• 2003.05a
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• pp.55-73
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• 2003

As the development of wireless technologies continue, mobile stock trading has become a new channel for companies to reach their customers. This study examines the factors affecting customer acceptance of mobile stock trading services. The research model based on the previous studies was established and the research hypotheses were generated. The sample was divided into users and nonuser groups. The test results show that relative advantage and social influence are positively related to intention to accept mobile services as well as in intention to reuse, security risk is negatively related to intention to reuse, frequency of trading is positively related to intention to reuse, cost burden is negatively related to the probability of using mobile stock trading services, and social influence is positively related to the probability of using mobile services. The results also support that information quality and response time are positively related to relative advantage, and interface quality is negatively related to complexity. It is considered that the study results may help managers to increase customer use of mobile stock trading services.

• The Journal of the Korea Contents Association
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• v.13 no.10
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• pp.461-469
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• 2013

This research aimed to design and develop a mobile-website mixed business model and smartphone based mobile application for the purpose of mobile fashion content distribution. We have implemented a mobile interface and trading system supporting self production of content, use, share, and user's self-up. And we proposed its market access strategy for the expansion of fashion contents transactions. To do this, the existing status of research and benchmarking for mobile app of fashion contents related were studied. As a result of the study, Android, iOS-based mobile applications were developed, but there are some business problems such as low awareness, low entry barriers, and the poor fashion content compared to the size of industry. Because this system provide the fashion contents of affiliated companies to users, it needs to expand cooperation and to promote the partnership with fashion blog, cafes, and fashion magazines.

• The Journal of the Korea Contents Association
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• v.11 no.8
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• pp.112-122
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• 2011

In this paper, we adopt a concept of UCM(User Created Market) to develop STOWAR system which is user can use their smart phone at anytime, anywhere to directly forming a market at virtual space and other's also can access to this market trade with other users. This system is optimized for effectiveness of information alert and ease way to access information by selective event notification feature which can expected with activation of service.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.04a
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• pp.255-258
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• 2015

가상화폐는 법정통화가 금융위기나 통화정책 등에 심각하게 영향을 받아 발생하는 문제점으로 시작하여 국가나 신용기관에 독립적인 전자지급결제시스템을 갖추는 것을 목표로 등장하게 되었다. 대표적인 가상화폐인 비트코인은 국제적인 유통수단으로 활용되고 있으며, 일부 국가에서는 납세 및 기타 법률과 같은 규제를 통해 관리되고 있을 정도로 영향력이 있는 가상화폐이다. 본 연구에서는 비트코인의 개념 및 현 상황에 대해서 분석한 후, 모바일 환경에서 채굴되는 M-Bitcoin을 제안하였다. 그리고 M-Bitcoin이 암호통화로써의 가치를 가질 수 있도록 신뢰성 확보를 위한 기술을 적용하고, 차후 현실에서 서비스되는 과정에 대해 연구하였다.

• Journal of Internet Computing and Services
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• v.20 no.6
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• pp.129-135
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• 2019

Recently, studies have been conducted to improve the m-commerce process in the NFC-based mobile environment and the increase of the number of smart phones built in NFC. Since authentication is important in mobile electronic payment, FIDO(Fast IDentity Online) and 2 Factor electronic payment system are applied. In addition, block-chains using distributed raw materials have emerged as a representative technology of the fourth industry. In this study, for the mobile gallery auction of the traders using NFC embedded terminal (smartphone) in a small gallery auction in which an unspecified minority participates, password-based authentication and biometric authentication technology (fingerprint) were applied to record transaction details and ownership transfer of the auction participants in electronic payment. And, for the cost reduction and data integrity related to gallery auction, the private distributed director block chain was constructed and used. In addition, domestic and foreign cases applying block chain in the auction field were investigated and compared. In the future, the study will also study the implementation of block chain networks and smart contract and the integration of block chain and artificial intelligence to apply the proposed method.

• Journal of Venture Innovation
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• v.1 no.1
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• pp.15-27
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• 2018

Interest in Fintech is extremely growing as O2O which means the binding of online and offline appears. The scale of private consumption in South korea reached about 700 trillion won, however, the online trading is only about 60 trillion won, which means 640 trillion won is still trading in offline. The reason the Fintech industry comes into the spotlight is because the foundation of related industries such as the rise of mobile traffic and the fast growth of the financial transaction through the mobile channel is forming. Especially, the introduction of payment systems among these Fintech industries offers convenience to the consumer. Mobile payment has been generalized in daily life such as utility bills and taxi fares. Use of O2O service in various industrial fields in commerce gives convenience to consumers and increase in sales to business in recent commercial transaction which is moving to on-demand channel services. People in smartphone life are supposed to find more convenient services for saving time using their phone, and this kind of environment makes the ordering goods and services through Fintech payments increase. The emergence of O2O services influences the development of Fintech industry and the emergence of convenient and reliable Fintech service through the deregulation of Fintech also affects the activation of O2O services. The complementary relationships between O2O services and Fintech would contribute to economic activation. From the standpoint of the researchers, I would like to further study the methods that can lead to a new paradigm of the financial payments industry through the development of Fintech and the drafts for the market expansion of the current offline commerce making it online in the advent of O2O services in variety industries.

• Journal of Korea Entertainment Industry Association
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• v.14 no.3
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• pp.163-171
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• 2020

Currently, most of the mobile game market releases games through Google play and App Store, which have a high share. Because it uses a third-party platform, only the payment API system provided must be used, and third-party platform pays the game company after excluding certain fees. Because game companies do not know whether or not to refund items and cannot get back items through third party transactions, users and professional websites are continuously appearing that exploit refunds. In this thesis, after analyzing problems of existing payment method and presenting a payment model using blockchain smart contract, we analyzed differences from existing model in terms of transparency, decentralization(fee), efficiency, and as a result, payment model using smart contract has low commission through P2P transaction without third parties and transparent transaction record, preventing item forgery and refund. Later, the proposed payment model would lead to the culling of companies acting on behalf of refunds for words that deviate from moral ethics such as "Refund OK even with items" and resolve the problem of unreasonable fees that arise through third-party platforms.