• Proceedings of the Korea Multimedia Society Conference
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• 2003.05b
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• pp.667-670
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• 2003

M-Commerce에서 안전한 데이터 서비스를 위해서는 정보보호 및 무선 결제 시스템에 대한 연구가 반드시 선결되어야 한다. 현재 무선 결제 서비스는 이동통신사를 중심으로 한 소액결제 서비스가 주를 이루고 있으며, 신용카드 기반의 결제 서비스는 고액결제가 가능하지만 무선 결제 시스템에 취약한 문제점을 가지고 있다. 본 논문에서는 지불 승인 절차에 병목 현상을 개선하기 위해 일회성 패스워드 시스템을 적용한 PDA 기반 모바일 고액결제 시스템을 제안한다.

• Proceedings of the Korean Information Science Society Conference
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• 2002.10e
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• pp.55-57
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• 2002

국내외적으로 전자상거래 이용이 활성화됨에 따라 물류환경도 변화하고 있다. 또한 전자상거래 시대에 부합하는 물류서비스 경쟁도 가속화되고 있다. 업무환경이 현장에서 단순 반복 업무로 이뤄진다는 Logistics의 특성상 차별화 된 서비스를 위해 Mobile 기기를 도입한다는 것은 필수적인 추세가 되어 가고 있다. m-Logistics의 확산은 이제 시대의 흐름이되었으며, 따라서 모바일 환경에 대한 효과적인 대응전략은 기업의 수익과 비용감소에 직접적인 역할을 할 것이다. 물론 물류분야에 Mobile을 도입하여 그 효과를 최대화하기 위해서는 물류업무의 표준화, 모바일 기기의 기능강화, 무선통신 인프라의 확충, 기업투자비 경감등의 조건을 해결해야 한다는 선행과제가 있지만, 공차 운행으로 인한 물류비 절감과 유무선 통합 물류관리를 통한 업무 생산성 및 고객서비스 개선이라는 기대효과는 Mobile의 도입을 충분히 매력적으로 보이게 하는 요소인 것이다 이런 점에서 본 논문에서 제시하는m-Logistics환경에서 물류 서비스 중 가장 중요한 전자지불과 거래보안 서비스를 새롭게 제시하였다.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.15 no.1
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• pp.52-65
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• 2016

The electronic toll collection system(ETCS), is globally used in about 40 countries. In Korea, the Korea Expressway Corporation led the nationwide introduction of the ETC system in 2007 under the brand name of the Hi-pass. Since then, Hi-pass, with its rate of average daily use reaching about 70%, has become an essential facility in Korean expressways. To identify users' perception on Hi-pass (satisfaction, preference, etc.), this study conducted a Modified Importance-Performance Analysis (M-IPA). With this, this study attempted to identify the kind of efforts necessary to enhance current Hi-pass users' convenience and satisfaction. According to the result of M-IPA, the items including "non-stop payment" and "toll discount" are identified as key items that require further improvement. For improvement in the "non-stop payment" item, operations of Hi-pass toll booths appropriate for the demand for Hi-pass use and the selection of Hi-pass booths' locations in consideration of entry and exit lanes need to be improved. In addition, with regard to the "toll discount" item, although toll discount is currently provided to Hi-pass users, thus, PR thereof will have to be strengthened. It is expected that this study will be used as basic data to devise methods of enhancing Hi-pass usage through improvement of Hi-pass users' satisfaction.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.24 no.2
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• pp.275-284
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• 2014

Recently, the combination of mobile and NFC aroused great momentum for Activation of NFC services market. Especially, mCoupon service using NFC has been utilized in a variety consumer marketing. However, mCoupons differ significantly from paper-based coupons because unprotected data can be easily copied or modified without significant cost by anyone. A high number of uncontrolled copies of coupons can result in a significant loss. In this paper, we proposed a light-weight signature scheme that is protected against illegal use in nfc mobile payment environment to using limited resources.

• Electronics and Telecommunications Trends
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• v.20 no.1 s.91
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• pp.33-42
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• 2005

모바일 지급결제 서비스는 개인이 휴대전화나 PDA 등 이동통신기기를 사용하여 자금이체나 상거래 대금의 결제 등에 이용하는 서비스를 말한다. 1990년대 후반부터 선을 보인 모바일 지급결제 서비스는 현재 최신의 IT 기술과 접목되어 다양한 환경에서 다종의 지급결제 방식으로 서비스되고 있는 추세에 있다. 그러나 모바일 지급결제 서비스 사업자가 시작 단계에서 호환성 문제를 고려하지 않고 서비스를 개시하여 사용자의 편의성과 투자 효율성을 높이기 위해 필요한 모바일 지급결제 표준화 과정에서 어려움을 겪고 있다. 본 고에서는 모바일 지급결제의 정의 및 분류, 국내외 시장현황, 그리고 표준화 대상이되는 핵심기술들과 표준화 동향에 대해 살펴보고자 한다.

• Proceedings of the KIEE Conference
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• 2002.07d
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• pp.2580-2582
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• 2002

Currently using of card sway the our community together with developing industry, whether it is credit card or not any type of card, people have the card in the wallet. But these cards have a little problem like ragne of communication, data store term, and so on. So we adopt the bluetooth. Bluetooth has been watched on local wireless communication among the wireless communication method. Bluetooth has ranged from 10m to 100m for communication and dissipated low power. Besides bluetooth has the communication speed faster than communication method of other smart card. In this paper we designed the smart card which is automatically accounted without any payment.

• Journal of KIISE:Information Networking
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• v.35 no.2
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• pp.120-129
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• 2008

The purpose of sensor network is gathering the information from sensor nodes. If there are selfish node that deliberately avoid packet forwarding to save their own energy, the sensor network has trouble to collect information smoothly. To solve this problem we suggest a mechanism which uses credit payment schema according to the amount of forwarding packets. Sensor nodes use credits to send their own message and they forward packets of other sensor nodes to get credits. To offer authenticity we combined the roles of sink node and server, also we used piggybacking not to send additional report message. The packet trace route is almost fixed because sensor node doesn't have mobility. In this case, it happens that some sensor nodes which don't receive forwarding packets therefore they can't get credit. So, we suggested the way to give more credits to these sensor nodes. Finally, we simulated the suggested mechanism to evaluate performance with ns2(network simulator). As a result, packet transmission rate was kept on a high rate and the number of arrival packets to sink node was increased. Also, we could verify that more sensor nodes live longer due to deceasing the energy consumption of sensor nodes.

• The Journal of Information Technology
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• v.5 no.3
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• pp.197-214
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• 2002

Electronic Commerce has already existed for over 20 years. The Bolero project initially had the support of TEDIS, and now is jointly financed by SWIFT(Society for World International Financial Telecommunications) which handles most of the electronic funds transfer for banks, and the Through Transport Mutual Assurance Association(the TT Club), a mutual insurance association most of whose members are drawn from the Multimodal transport industry or transport intermediaries. Bolero's mission is to provide guaranteed and secure delivery, in electronic form, of trade documentation, globally, based on a binding legal environment and common procedures, Bolero will also provide a platform for provision of neutral cross-industry services. TradeCard is a payment and settlement system that is an alternative to letters of credit. That is, TradeCard is a business-to-business e-commerce infrastructure that enables buyers and sellers to conduct and settle international trade transactions securely over the Internet. Paperless, payment-guaranteed international trade transactions - which eliminate the traditional letters of credit with electronic certifications - are widely considered the most difficult B2B transactions to conduct.

• 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.

• Proceedings of KOSOMES biannual meeting
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• 2003.05a
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• pp.159-165
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• 2003

To Recently, the buckling is easy to happen a thin plate and High Tensile Steel is used at the structure so that it is wide. Especially, the buckling is becoming important design criteria in the ship structure to use especially the High Tensile Steel. Consequently, it is important that we grasp the conduct after the buckling behaviour accurately at the stability of the body of ship structure. In this study, examined closely about conduct and secondary buckling after initial buckling of thin plate structure which receive compressive load according to various kinds aspect ratio under simply supported condition that make by buckling formula in each payment in advance nile to place which is representative construction of hull. Analysis method is F.E.M by ANSYS and complicated nonlinear behaviour to analyze such as secondary buckling.