• The Journal of Korean Institute of Communications and Information Sciences
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• v.25 no.7B
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• pp.1244-1252
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• 2000

현존하는 국내외 인터넷 경매시스템은 경매하고자하는 상품을 게시하고 그 상품에 대해 경매 입찰자들이 입찰(bid)을 제시함으로 해서 최종적으로 경매 시간 내에 가장 높은 입찰가를 제시하는 경매 입찰자에게 거래가 낙찰되는 형식이 사용되고 있다. 하지만 인터페이스 부분에 있어서 사용자의 편의성을 고려하지 않을 뿐만 아니라 경매 참여자에게 지속적인 입찰제시와 확인 등의 여러 가지의 사용자 행위를 요구하므로 전자상거래의 고객 편의를 위한 One-step processing을 만족시키지 못하고 있으며 사용자의 행위를 대신하여주는 에이전트를 이용한 자동 처리 부분은 거의 고려하지 않은 시스템이므로 사용자의 편의성 면에서 단점을 가지고 있다. 따라서 본 논문에서는 자동적으로 사용자를 위해 입찰 행위를 대신하여 주는 사용자 입찰 가격 전략 알고리즘을 제안하여 기존에 사용되었던 일반적인 경매 시스템의 단점을 보완하여 효율적인 입찰 가격 정책을 이용하며 또한, 모든 일련의 경매에 대한 사용자 행위를 MIME(Multipurpose Internet Mail Extensions) 프로토콜을 이용한 메일 양식에 응답만으로 모든 경매 서비스를 받을 수 있는 인터넷 경매 시\ulcorner템을 설계 및 구현하고자 한다.

• Journal of Electrical Engineering and Technology
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• v.4 no.1
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• pp.49-54
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• 2009

One of the major challenges confronting a multiservice electric utility is the establishment of the right prices for its services. The key objectives of particular pricing schemes are reasonableness of company earnings, economic efficiency, the responsiveness of supply and of the allocation of sources to the desires of consumers, and maintenance of some degree of competition. This paper proposes a value-based pricing mechanism amenable to the current deregulation situation in electricity market allowing service differentiation. The proposed pricing mechanism can be implemented in a nodal auction model, and can also be applied to direct load control.

• Proceedings of the Korea Information Processing Society Conference
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• 2002.04b
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• pp.1159-1162
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• 2002

다수에 의한 다수에 대한 P2P 전자경매 시스템에 대한 모델과 Java 의 Jini 기술을 기반으로 하는 구축방안에 대하여 기술한다. Jini Service 형태로 네트웍에 공개되는 모든 전자경매 진행관련 정보에 대한 검색과 입찰 처리과정을 자동화 할 수 있을 뿐만 아니라, 네트웍 문제 발생에 대한 자동복원, 참가 이후 신규 공개되는 정보에 대한 비동기 자동 확인, 그리고 ACID 개념을 보장하는 트랜잭션 관리 등이 가능하다. 다양한 MIME 타입을 지원하는 컨텐츠와 EJB 를 활용할 경우 유선 및 무선 정보화장치를 통하여 모델에 참여할 수 있으며, 수동 접속된 특정 서버의 제공 정보 및 절차에 제한 받지 않는다.

• Proceedings of the Korea Information Processing Society Conference
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• 2013.05a
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• pp.739-742
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• 2013

LBS(Location Based Service) 기반의 스마트폰 광고 경매 시스템은 스마트폰을 비롯한 모바일 기기에서 사용자의 현재 위치에 기반 하여 광고를 제공하는 시스템이다. 본 연구에서는 광대역 지역을 대상으로 광고 위치 혹은 지역을 세분화 하여 나눈 셀 단위의 영역을 경매하여 광고를 제공할 수 있는 시스템을 제시한다. 이를 위하여 광대역 지역을 셀 단위로 구획화하여 관리하는 광고 제공 서버와 광고 위치를 경매하는 웹 서버, 그리고 스마트폰에 광고를 제공하는 플랫폼으로 구성된 시스템을 구현한다.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.29 no.3
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• pp.200-213
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• 2018

Herein, we survey the current state of the recent legal revision of the Citizens Broadband Radio Service, a type of city spectrum-sharing service used in the United States of America, and the introduction of spectrum sharing in the frequency ranging from 3.8~4.2 GHz, based on the United Kingdom framework for spectrum sharing. Specifically, the subjects of topical interest, including the radio station licensing of the spectrum-sharing service system face-to-face multitier user structure, regional frequency allocation, and applicable service types, are discussed. Furthermore, factors to be considered while selecting candidate channels for joint use are suggested, emphasizing their importance for introducing spectrum sharing in Korea and revitalizing the related industrial sectors. In addition, methods of introducing a radio station license system for spectrum sharing, techniques of introducing incentive auctions, and the types of services where spectrum sharing is applicable are discussed.

• The Korean Journal of Health Service Management
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• v.6 no.2
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• pp.25-34
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• 2012

The purpose of this research is to evaluate the degree of transactions of the electronic commerce in the hospitals. We created well-organized questionnaire to achieve this goal. we did telephone interviews with the hospitals, and then we reached out to the hospitals by e-mail and postal mail. We interviewed 311 hospitals, and 104 hospitals participated in this study. We conducted cross tabulations. The results are following : Among the subjects, male was 77.9%(81) and female was 22.1%(23). 51.0% of the hospitals used electronic commerce in their work purpose. The proportion of the hospitals that started their electronic commerce before 2000 years was 30.2% and after 2000 years was 69.8%. In the major electronic commerce service providers, 30.4% of the hospitals had their contract with auction, 18.4% of the hospitals had their contract with public procurement services. which is running by Korean government, and 11.8% were with EZmedicom and 10.8% were working with Carecamp. Through electronic commerce, the most high usage was office supplies 41.0% and the send area was medical supplies 11.2%. The results of this study suggest that electronic commerce in health care field is a very new area compared to other industries. There may be lots of barriers in the aspects of a way of working and norms of health care field. Electronic commerce system and contracts with their electronic commerce service providing partners.

• The Journal of Society for e-Business Studies
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• v.12 no.4
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• pp.29-36
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• 2007

Recently, Jaiswal et al. proposed a protocol to improve the multi-agent negotiation test-bed which was proposed by Collins et al. Using publish/subscribe system, time-release cryptography and anonymous communication, their protocol gives an improvement on the old one. However, it is shown that the protocol also has some security weaknesses: such as replay data attack and DOS (denial-of-service) attack, anonymity disclosure, collusion between customers and a certain supplier. So proposed protocol reduces DOS attack and avoids replay data attack by providing ticket token and deal sequence number to the supplier. And it is proved that the way that market generates random number to the supplier is better than the supplier do by himself in guaranteeing anonymity. Market publishes interpolating polynomial for sharing the determination process data. It avoids collusion between customer and a certain supplie

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.9 no.11
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• pp.4311-4330
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• 2015

Cloud computing has become a new paradigm by enabling on-demand provisioning of applications, platforms or computing resources for clients. Workflow scheduling has always been treated as one of the most challenging problems in clouds. Commercial clouds have been widely used in scientific research, such as biology, astronomy and weather forecasting. Certainly, it is very important for a cloud service provider to pursue the profits for the commercial essence of clouds. This is also significantly important for the case of providing services to workflow tasks. In this paper, we address the issues of workflow scheduling in commercial clouds. This work takes the communication into account, which has always been ignored. And then, a topology-based workflow-scheduling algorithm named Resource Auction Algorithm (REAL) is proposed in the objective of getting more profits. The algorithm gives a good performance on searching for the optimum schedule for a sample workflow. Also, we find that there exists a certain resource amount, which gets the most profits to help us get more enthusiasm for further developing the research. Experimental results demonstrate that the analysis of the strategies for most profits is reasonable, and REAL gives a good performance on efficiently getting an optimized scheme with low computing complexity.

• Journal of Fashion Business
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• v.14 no.5
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• pp.49-65
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• 2010

The purpose of this paper is to derive the categories of negative e-WOM (electronic word of mouth) via consumer review. Disclosing the details of negative e-WOM based consumer reviews has never been done before. For this reason, a content analysis was adopted to provide knowledge and understanding of the phenomenon. This paper analyzes the content of 630 consumer reviews posted on the open market internet site, www.auction.co.kr. The analysis was conducted from October 20th, 2008 to March 10th, 2009. The results indicated that the negative e-WOM based consumer reviews can be divided into two categories: the cognitive evaluation and the expression of consumer's emotion. The category of cognitive evaluation is consisted of negative e-WOM of product, negative e-WOM of service, and warning about the risk of purchasing products. The category of expressing consumers' emotion are composed of venting customers' dissatisfaction and passive response of dissatisfaction. Investigating the details of negative e-WOM has a number of implications. Most importantly, the results revealed multidimensional structure of negative e-WOM. This understanding of negative e-WOM communication allows marketers to improve products and services that better meet customers' current and future needs.

• Journal of Information Technology Applications and Management
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• v.10 no.1
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• pp.1-17
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• 2003

As the increase of internal users, there are many enterprises and organizations that regard the internal as the great ■marketing superhighway■. But the entrance of too many e-Business enterprises and shopping sites makes them to compete each other Consequently many sites are created and disappeared in the cyberspace. Although fascination and speculation surrounds the impact of the e-Business on business models via benefit-based concept, there is little evidence underlying all this speculation. This article provides on such data set. It reports on critical Issues that e-Business enterprises found salient as they browsed through e-Business model infrastructure on the world wide web, internet-based. We gathered domestic e-Business enterprise's kinds of business model during 2000∼2002 via KMAC's (Korea Management Association Consultants) K-WPI and K-WPC. We classified e-Business models as shopping mall, auction, community. value-chain, collaboration, information brokerage, advertising, Internet service, marketing that we had identified from the existing literature on business models. This study translated these models to the e-Business model context and explored their relative salience. The results suggest that e-Business manager need to think more about how they perform on the issues known to affect decision making for designing e-Business models. We offer advice for enhancing the effectiveness of business models.