• The Journal of Society for e-Business Studies
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• v.27 no.2
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• pp.65-77
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• 2022

Due to the recent development in electronic financial services, transactions of electronic prepayment are rapidly growing, leading to growing fraud attempts. This paper proposes a methodology that can effectively detect fraud transactions in electronic prepayment by machine learning algorithms, including support vector machines, decision trees, and artificial neural networks. Actual transaction data of electronic prepayment services were collected and preprocessed to extract the most relevant variables from raw data. Two different approaches were explored in the paper. One is a transaction-based approach, and the other is a user ID-based approach. For the transaction-based approach, the first model is primarily based on raw data features, while the second model uses extra features in addition to the first model. The user ID-based approach also used feature engineering to extract and transform the most relevant features. Overall, the user ID-based approach showed a better performance than the transaction-based approach, where the artificial neural networks showed the best performance. The proposed method could be used to reduce the damage caused by financial accidents by detecting and blocking fraud attempts.

• 한국벤처창업학회:학술대회논문집
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• 2021.04a
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• pp.93-95
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• 2021

새로운 코로나 바이러스 질병(COVID-19)은 많은 사람들의 일상생활에 영향을 끼쳤다. 그로 인해 학교 개학 연기와 재택근무 등으로 가정에서 생활하는 시간이 늘어났다. 정부의 사회적 거리 제한에도 식료품은 여전히 인간의 기본 필수품이다. 전염병이 유행하는 동안 식료품에 대한 소비자의 지출은 온라인 소매상에서 큰 폭의 증가를 보이며 온라인 쇼핑이 더욱 확대되고 있다. 판매 품목 중 신선도가 매우 중요한 요인으로 작용하는 농식품은 다른 제품보다 더딘 온라인 쇼핑의 성장 행태를 보이고 있다. 시장 상황을 보아 제품의 특성으로 인하여 농식품의 온라인 구매에 영향을 미치는 요소는 타 제품군과 다른 것으로 판단된다. 본 연구의 목적은 농식품의 온라인 및 모바일 거래 활성화를 위해 농식품 쇼핑몰의 특성과 혁신성이 구매의도에 미치는 영향력을 분석하는 데 있다. 본 연구는 온라인 농산물 쇼핑몰의 특성이 구매의도에 미치는 영향을 살펴보고, 그 관계에서 농식품의 온라인 및 모바일 거래 활성화를 위한 농식품 쇼핑몰 혁신성이 구매의도에 미치는 영향력을 중심으로 진행한다. 따라서 본 연구에서는 소비자의 혁신성이 농식품의 온라인 및 모바일 거래에서 거래 위험에 대한 저항을 낮추어 구매의도를 증가시키는데 영향을 미칠 것이라는 인과적 경로를 검증하고자 한다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.05a
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• pp.712-714
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• 2018

The system of this paper designs and implements a used trading system that is commonly used on the Internet. In order to pursue local transactions based on location, we designed the system by dividing the region in consideration of the general characteristics of used transactions that are restricted by transactions through distance and location. To do this, I used MySQL as the database engine and I used PHP, an Internet server-based scripting language, for database interworking. Due to the characteristics of secondary transactions, information security and design of each product are considered.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.05a
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• pp.353-355
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• 2018

The system of this paper designs and implements a used trading system that is commonly used on the Internet. In order to pursue local transactions based on location, we designed the system by dividing the region in consideration of the general characteristics of used transactions that are restricted by transactions through distance and location. To do this, I used MySQL as the database engine and I used PHP, an Internet server-based scripting language, for database interworking. Due to the characteristics of secondary transactions, information security and design of each product are considered.

• Proceedings of the CALSEC Conference
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• 1998.10b
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• pp.345-354
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• 1998

제품을 정의하고 변경을 통지하는 관리업무 - Configuration Item(CI)의 기능적, 물리적인 특성을 정의하고 문서화 - 이러한 특성들의 변경을 통제 - 변경 절차 및 실행 현황을 기록 및 보고 - 업무 절차(중략)

• Journal of Distribution Research
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• v.8 no.1
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• pp.1-19
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• 2003

Given the recent trend in business markets to seek and conscientiously develop long-term relationships, it has become increasingly important to understand why such long-term relationships are developed and how they are maintained. Despite their obvious importance, the antecedent conditions and processes of long-term relationships between industrial buyers and suppliers have not been systematically studied. In this research, I report a study of the antecedents of industrial buyer-seller relationships and the relational performance. What kinds of factors contribute to the development of long-term relationships\ulcorner How do these factors influence the corporate performance in the business markets\ulcorner The primary motivation of this study was drawn from an interest in answering these research questions. Managerial implications of the study results are also discussed.

• Journal of Korea Fair Competition Federation
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• no.104
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• pp.19-28
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• 2004

EC 경쟁법은 수직적 관련하에서의 거래제한에 관한 이해가 이루어지고 있는데, 기본적으로 미국의 반독점법상의 이해와 유사하지만, EC 경쟁규범의 특성에 따른 이해의 차이도 존재한다. 그러나 수직적 거래제한이 독립적인 거래제한 유형으로 명문화되고 있지는 않으며, 포괄적인 EC 경쟁법의 실체규범인 EC조약 제81조와 제82조가 이에 대한 규제근거가 되고 있다. 동 조약 제81조는 카르텔을 제82조는 시장지배적사업자의 지위 남용에 대한 규제를 규정하고 있는데, 수직적 거래제한은 양자 모두에 관련될 수 있다.

• Proceedings of the Korea Institutes of Information Security and Cryptology Conference
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• 1998.12a
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• pp.123-135
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• 1998

현재 많은 관심을 받고 있는 전자상거래는 앞으로 더욱 활성화되어질 전망이다. 전자상거래는 그 특성상 디지털 데이터와 같은 소액 거래가 쉽게 이루어질 수 있다. 소액 거래는 비록 거래 비용은 적지만 그 응용 분야가 넓기 때문에 중요성을 가진다. 이러한 소액 거래를 위해서는 처리비용이 적어야만 한다. 소액 거래를 위한 많은 프로토콜이 연구되고 있는데, 본 고에서는 지금까지 개발된 대표적인 소액지분 프로토콜을 살펴보고 기존의 소액지분 프로토콜에서 대부분 지원하지 않았던 익명성을 부여한 소액지불 프로토콜을 제안한다.

• Journal of the Korea Society of Computer and Information
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• v.5 no.4
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• pp.28-40
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• 2000

As the surrounding of companies is more complicated and intensive. many companies attempt managerial innovations by using information technology(IT) strategically. Recently, information technology, especially Electronic Data Interchange(EDI), is highlighted in the surrounding of companies, because it is regarded as a core technology. EDI is the direct computer-to-computer exchange of business documents in standard formats. EDI brings many benefits to the organization such as reduced costs, faster turnaround, better customer service, and strategic advantage. The Purpose of this study is to identify the effects of relational characteristics-communication, trust, conflict, and commitment- on the performance of Business-to-Business EC. In other words, this study examine the relationships between each characteristics and the effects of these characteristics on the organizational performance. The results of empirical analysis revealed that communications between parties have positive influence on the trust and commitment, and high label of commitment on the EDI is improved the organizational performance. In addition, trust in parties indirectly affects characteristics has unexpectedly positive influence on the trust, commitment, and performance.

• Korean journal of communication and information
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• v.59
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• pp.233-258
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• 2012

The purpose of this study is to research on the mechanism of exportation of Korean TV programs. As a result, the buying countries of Korean TV programs have been relatively diversified : 40 countries across the world. However, examining the frequency of exportation has shown that it primarily focused on few countries such as Japan and Taiwan. Furthermore, drama has been the most preferred genre by foreign countries. Fortunately, remakes, dubbing productions, publications, and merchandising have been started to develop. As for the trade partner, the portion of foreign distributors has been ranked as a the most prioritized type. Therefore, it is necessary to open the existing closed system of distribution of Korean free TV to build more diversified partnership.