• Journal of Software Assessment and Valuation
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• v.15 no.1
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• pp.115-121
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• 2019

I analyzed the structure of a block-chain system and a block-chain-based service system. It is a decentralized book encryption system software technology that does not require a third party to secure trust between the two parties. Block chains are structured in a linked list structure. The block chain manage transaction information by blocking the transaction information, in conjunction with other blocks. As a result, I have discovered structural weaknesses in current block-chain systems and block-chain-based service systems. Once these possible structural problems are resolved, I expect that the block-chain-based service system will make various industrial contributions.

• Information and Communications Magazine
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• v.17 no.3
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• pp.64-73
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• 2000

통신과 컴퓨터 기술의 비약적인 발전게 따른 인터넷의 급속한 확산은 일상적인 상거래를 인터넷 상에서 전자적으로 수행할 수 있도록 하는 전자상거래의 급속한 확장을 가져오고 있다. 전자상거래는 시·공간적인 제약을 받는 기존 상거래를 대체하며 현재 활발히 확산되고 있다. 그러나 인터넷 상의 전자 상거래가 더욱 활성화 되기 위해서는 거래에 대한 인증, 무결성, 기밀성,부인봉쇄 기능을 제공하여 전자거래의 안전성과 신뢰성을 확보해야 한다. 최근 이러한 전자 상거래의 안전성을 제공하기 위해 PKI(Public Key Infrastructure)에 대한 연구가 많이 진행되고 있다. PKI는 공개키 암호 시스템과 공개키에 대한 인증서, 인증기관 등으로 구성되어 전자 거래의 안전성을 제공하는 기반구조로서 많은 응용 분야에서 활용되고 있으며 그 성장 가능성이 매우 크다. 본 고에서는 공개키 기반구조에 대한 개념과 국내외 연구 동향, 그리고 한국전자통신연구원에서 개발한 공개키 기반구조인 ETRI CMS(Certificate Management System)를 설명한다.

• Proceedings of the Korean Information Science Society Conference
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• 2003.10a
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• pp.325-327
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• 2003

최근 e-Business 기반의 B2B, B2C시스템이 몇 년 사이에 폭발적으로 증가하고 있으나 기업간의 비즈니스 거래시 시스템간의 서로 다른 플랫폼과 다양한 문서 구조를 갖고 있어 상호 운용성 문제가 대두되고 있으며, 이 문제를 해결하기 위한 통합적인 비즈니스 프레임워크를 구성하는 방법에 대해 관심이 점차 증대되고 있다. 이 논문에서는 거래 기업간 서로 다른 플랫폼과 서로 다른 문서 구조를 가지고 있으므로 시스템들의 통합 및 상호 운용성을 해결하기 위해 UN/CEFECT에서 국가간 비즈니스 메시지 전송 표준으로 제시한 ebMS 2.0표준 규약에 따라 MOM(Message-Oriented-Middleware)를 개발하여 상호 운용성을 해결 하였으며 기업간의 거래 문서는 최근 W3C에서 제안하는 XML기반을 갖는 상이한 XML문서 구조를 갖는 문서를 변환하여 송수신 할 수 있는 문서 변환기인 XML Mapper를 구현 하였다.

• Journal of Digital Contents Society
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• v.15 no.1
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• pp.121-128
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• 2014

SSE-CMM for security engineering, engineering, assurance, risk is divided into three elements of the process maturity assessment model and the level of information security presented. Maturity measurement of privacy, vulnerability diagnosis and risk analysis methodologies is used in practical field for present a comprehensive conclusion. The common cyber services are internet banking, mobile banking, telephone banking and the like. Transaction structure, a kind of cyber-banking system, information security maturity of the existing measurement methodologies for research purposes, vulnerability diagnosis and risk analysis methodologies to be used in practical field present a comprehensive conclusion. To ensure safety and convenience for the user, convenient to deal with cyber environment is the key to the activation of cyber trading. Particularly by measuring the maturity of cyber banking system to ensure the safety of the practice field much effects are expected as a result.

• Journal of Environmental Policy
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• v.14 no.3
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• pp.41-73
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• 2015

The Korea Emissions Trading System that was launched in Jan. 2015 is expected to be a crucial policy measure to abate domestic $CO_2$ emission. For accomplishing its purpose, prior information on the price discovery process needs to be presented in order to facilitate the trading of spot allowances with different vintages. We develope a customized pricing method for Korean ETS using the concept of term structure and the cost of carry model.

• The Journal of the Korea Contents Association
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• v.12 no.4
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• pp.401-406
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• 2012

Shanghai Stock Exchange is the largest stock exchange of emerging markets that there were listed firms 905, listed securities 1,537, listed stocks 949, total number of listed stocks 2 trillion 2000 billion shares. There is more development that is expected to occur in the future. The purpose of this study is to find determinants of capital structure to listed manufacturing firms in Shanghai Stock Exchange using multiple regression. Conclusions of this study are summarized as follows. First, firm size is positively related to debt ratio significantly at 1% significance level.. Second, the profitability is negatively related to debt ratio significantly at 1% significance level. Third, the growth ability is positively related to debt ratio significantly at 1% significance level. fourth, cash flow, the largest shares ownership, negotiable shares ratio are negatively related to debt ratio but they are not significant statistically. The result of this study provides information for investors and can be utilized to improvement of financial structure.

• Journal of Digital Convergence
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• v.15 no.1
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• pp.209-216
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• 2017

The merits and demerits of the chaebol in Korea has been subjected to considerable debate in recent years. In accounting research, many papers have been concentrating on tunneling that be designated as expropriation of minority shareholders by controlling shareholders. Although majority previous paper suggested related-party transaction has a negative effect to firm value, some research on related-party transaction argued it has a positive effect, also. We assume that they can't consider compositive meaning of related-party transaction and result of prior studies are mixed. In this setting, we investigate the relation between earnings management and related-party transaction which be known as strategy for tunneling by considering controlling shareholder's ownership.

• Journal of Distribution Science
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• v.10 no.2
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• pp.29-41
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• 2012

This paper undertakes a conceptual review of transaction cost to broaden the understanding of the transaction cost analysis (TCA) approach. More than 40 years have passed since Coase's fundamental insight that transaction, coordination, and contracting costs must be considered explicitly in explaining the extent of vertical integration. Coase (1937) forced economists to identify previously neglected constraints on the trading process to foster efficient intrafirm, rather than interfirm, transactions. The transaction cost approach to economic organization study regards transactions as the basic units of analysis and holds that understanding transaction cost economy is central to organizational study. The approach applies to determining efficient boundaries, as between firms and markets, and to internal transaction organization, including employment relations design. TCA, developed principally by Oliver Williamson (1975,1979,1981a) blends institutional economics, organizational theory, and contract law. Further progress in transaction costs research awaits the identification of critical dimensions in which transaction costs differ and an examination of the economizing properties of alternative institutional modes for organizing transactions. The crucial investment distinction is: To what degree are transaction-specific (non-marketable) expenses incurred? Unspecialized items pose few hazards, since buyers can turn toalternative sources, and suppliers can sell output intended for one order to other buyers. Non-marketability problems arise when specific parties' identities have important cost-bearing consequences. Transactions of this kind are labeled idiosyncratic. The summarized results of the review are as follows. First, firms' distribution decisions often prompt examination of the make-or-buy question: Should a marketing activity be performed within the organization by company employees or contracted to an external agent? Second, manufacturers introducing an industrial product to a foreign market face a difficult decision. Should the product be marketed primarily by captive agents (the company sales force and distribution division) or independent intermediaries (outside sales agents and distribution)? Third, the authors develop a theoretical extension to the basic transaction cost model by combining insights from various theories with the TCA approach. Fourth, other such extensions are likely required for the general model to be applied to different channel situations. It is naive to assume the basic model appliesacross markedly different channel contexts without modifications and extensions. Although this study contributes to scholastic research, it is limited by several factors. First, the theoretical perspective of TCA has attracted considerable recent interest in the area of marketing channels. The analysis aims to match the properties of efficient governance structures with the attributes of the transaction. Second, empirical evidence about TCA's basic propositions is sketchy. Apart from Anderson's (1985) study of the vertical integration of the selling function and John's (1984) study of opportunism by franchised dealers, virtually no marketing studies involving the constructs implicated in the analysis have been reported. We hope, therefore, that further research will clarify distinctions between the different aspects of specific assets. Another important line of future research is the integration of efficiency-oriented TCA with organizational approaches that emphasize specific assets' conceptual definition and industry structure. Finally, research of transaction costs, uncertainty, opportunism, and switching costs is critical to future study.

• Proceedings of the Korean Information Science Society Conference
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• 2003.04a
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• pp.614-616
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• 2003

최근 인터넷 전자 상거래 시장의 급속한 성장과 발전은 웹어플리케이션 기술을 이용해 기업이 제공하는 서비스를 명세하고 이를 통한 기업간 서비스 연동 플렛폼 구축에 대한 관심으로 확대되고 있다. 인터넷을 기반으로한 전자 거래 협업을 위한 표준 기술로써 ebXML은 기업간 거래 프로세스를 모델링하여 공용 저장소에 등록하고 이를 토대로 기업간 협업을 명세하여 거래 비즈니스 프로세스의 수행을 자동화 시켜주는 기술이다. e-Logistics 비즈니스 프로세스 자동화 시스템은 ebXML 표준스팩을 기반으로 하여 기업간 전자 물류 거래 프로세스를 모델링하고 협업명세 정보와 연관된 비즈니스 프로세스를 해석하여 수행을 자동화하여 이들의 진행 상태와 수행결과에 대한 모니터링 정보를 제공한다. 비즈니스 상태 모니터링 도구는 e-Logistics 플랫폼과 EJB Framework 환경을 바탕으로 설계 및 구현 되었으며 비즈니스 프로세스의 원활한 수행에 필요한 상태 모니터링 정보와 거래 문서의 송수신 기능을 제공한다. 본 논문에서는 ebXML 비즈니스 프로세스 상태 모니터링을 위한 모니터링 도구의 시스템 구조와 주요 기능을 언급하고 설계 요구사항 및 클래스 구조도를 제시한다. 또한 BPMS 엔진 컴포넌트 모듈과의 연동 시나리오 및 구현된 사용자 인터페이스에 대해서 기술한다.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2003.05a
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• pp.44-52
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• 2003

인터넷 뱅킹은 다른 정보시스템이나 웹기반 시스템에 비해 보안에 대한 우려가 높으면서, 다른 거래자들과의 사용자간 거래가 지원되는 P2P적 요소를 가지고 있다. 따라서 보안우려와 거래파트너는 인터넷 뱅킹 사용에 많은 영향을 주는 중요한 요소로 간주될 수 있다. 본 연구에서는 기존의 기술수용모형에 보안우려와 거래파트너 영향을 외부변수로 도입한 확장된 기술수용모형을 제안하였다. 이를 위해 기존에 사용하고 있던 유용성 대신에 편리성을 도입하였고 보안우려와 사용용이성 및 사용은 부( )의 관계, 거래파트너 영향과 편리성 및 사용은 정(+)의 관계에 의해 기존의 기술수용모형에 확장하였다. 실증적 검증을 위해 설문조사를 하였고 조사결과는 구조방정식에 의해 분석하여 만족할만한 모형적합도를 얻었고, '보안우려-사용용이성' 관계를 제외한 모든 가설이 채택되었다.