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Dive into the research topics where Changi Nam is active.

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Featured researches published by Changi Nam.


Computers & Operations Research | 2007

Developing a decision model for business process outsourcing

Dong-Hoon Yang; Seongcheol Kim; Changi Nam; Ja-Won Min

Information technology (IT) outsourcing has been one of the critical issues in organization management. Business process outsourcing (BPO) is an advanced type of IT outsourcing, which will be the next big wave in information technology services. Nevertheless, since prior studies have only examined issues related to traditional IS outsourcing, there have been few researches that introduce and discuss the important factors that should be considered in the decision of BPO adoption. This paper identifies factors affecting the BPO decision and structures a decision model using the analytic hierarchy process (AHP) method. By proposing a quantitative decision model, this paper will not only assist management in making better decisions in outsourcing their business processes, but also help them to obtain the most benefits from BPO.


IEEE Wireless Communications | 2004

Fixed and mobile service convergence and reconfiguration of telecommunications value chains

Dong-Hoon Yang; Seongcheol Kim; Changi Nam; Ji-Sook Moon

The value chain model serves as a proper analytical tool of industry processes, particularly under rapidly changing telecommunications environments. This article attempts to provide a better understanding of the convergence between the fixed and mobile telecommunication industries by investigating changes in the value chains. Specifically, this article develops a new type of fixed-mobile convergence value chain, and highlights the importance of content and application providers in the new value chain. Some examples of fixed and mobile service convergence in Korea are discussed, and these confirm progress in fixed and mobile convergence, and reconfiguration of value chains.


Journal of Media Economics | 2008

Earnings Management of Acquiring Firms in Stock-for-Stock Takeovers in the Telecommunications Industry

Hyeongjik Lee; Seongcheol Kim; Changi Nam; Seung Hun Han

This article investigates whether acquiring telecommunications firms managed their earnings by means of discretionary accruals prior to the announcement of stock-for-stock takeovers in the U.S. telecommunications industry during the period of 1990 to 2006. The results show that acquiring telecommunications firms manage earnings upward prior to stock-for-stock takeovers. In addition, this article finds that there is a negative short-term wealth effect over the days surrounding stock-for-stock takeover announcements, and there is an inverse relation between earnings management and short-term wealth.


Telematics and Informatics | 2016

Competitive dynamics in the Korean video platform market

Junghwan Kim; Seongcheol Kim; Changi Nam

Competition between traditional pay TV and OTT is not severe in Korea.Traditional pay TV has competitive superiority over the OTTs except YouTube.YouTube provides the highest level of gratification among Korean video platforms. Netflix is commonly referred as an over-the-top (OTT) media, and it takes a role of a video platform changing the market. The purpose of this research is to explain the competition in Korean video platform market, in particular competition between traditional pay TV and OTT. In this study, the theory of the niche is adopted to explain the competitive dynamics in video platform market in Korea. This theory is a unique framework to conceptualize and empirically measure the impact of new media on the old one. It explains and predicts the existence, displacement, and extirpation of players in the ecosystem. To make up for the previous researches, multiple resources such as gratification and time spent using media are measured in this study. The result indicates that the case of the Korean market was significantly different from the case of America, in that competition between traditional pay TV and OTT was not severe.


Review of Pacific Basin Financial Markets and Policies | 2005

Stock Market Reaction to Mergers and Acquisitions in Anticipation of a Subsequent Related Significant Event: Evidence from the Korean Telecommunications Industry

Changi Nam; Dong-Hoon Yang; Myeong-Cheol Park; Gil-Hwan Oh; Jong-Hyun Park

The objective of this paper is to assess the effect of mergers and acquisitions on shareholder wealth when subsequent related significant events are anticipated. We identify a particular merger and acquisition between telecommunication companies in Korea and examine whether it conveys good or bad news to stock market participants. We hypothesize and find that mergers and acquisitions are interpreted as good news by the marketplace when they are expected to be accompanied by a subsequent related significant event, in our case granting of a government license for the IMT-2000 mobile service.


Computer Standards & Interfaces | 2005

Effect of time of adoption on consumer preference for transport telematics services

Changi Nam; Dong-Hoon Yang; Euehun Lee; Seongcheol Kim; Jeong-Hoon Kim

Telematics service is a rapidly evolving mobile commerce service in the early stages of its diffusion. This study examines consumer preferences for transport telematics services over time in terms of service features and purchasing time by conjoint analysis and the rate of time preference (RTP) method. Our empirical results prove that an upgraded navigation-traffic information service and the vehicle relationship management (VRM) service are the most important factors for both current and potential consumers and that timing of these services has a negative impact on consumer preferences.


electronic government | 2004

The Future of e-Government: Collaboration Across Citizen, Business, and Government

Dong-Hoon Yang; Seongcheol Kim; Changi Nam; In-gul Lee

Governments in many countries have been implementing e-government for the purpose of better service delivery to citizen, better environments for businesses, and more efficient and transparent public administration. However, most implementations of e-government have provided temporary approaches rather than holistic view for citizen-oriented service level. In this paper, we intend to suggest three main directions that must be taken for better e-government in the future.


Telematics and Informatics | 2018

A customer-based indirect approach to determine the value of news provided to Internet portals in Korea

Ahreum Hong; Changi Nam; Seongcheol Kim

Abstract The online channel becomes one of the most important distribution channels of news contents. As the portal becomes a platform for the distribution of news content to users, the conflict between the portal and newspaper companies arises about the value of the news content provided to Internet portals by newspaper companies. This paper attempts to estimate the value of the news content on the portal using the case of the relationship between the Naver portal site and newspaper companies in Korea. Since there is no direct way to estimate the value of news content, this study utilizes an indirect way based on consumer’s intention to visit portal site. An analytic hierarchy process based on consumer surveys is employed in this paper to estimate the relative importance of news content on a main page and a search service. On the basis of this relative importance, this paper estimates the portal’s operating income which is generated by the contribution of news content, using accounting data from Naver.


International Journal of Services Technology and Management | 2011

A wireless telecommunications technology policy for digital life in Korea

Jungmann Lee; Kiyong Om; Changi Nam

This article examines the conceptual establishment of ‘digital life’, and shapes the Korean Government’s IT policy for its early realisation. The process of selecting core technologies from promising digital services is illustrated by applying the basic concept of digital life to the field of wireless telecommunications in Korea. The article also explores several social, legal, and strategic issues for the successful deployment of digital life and suggests a stepwise approach for an efficient promotion policy. It further proposes that the government should make efforts to create new markets for firms involved in providing digital life equipment and software, by beginning the digitalisation of public services and reinvesting both in the development of a diverse range of more attractive digital services, and in lowering the service prices.


Global Finance Journal | 2003

Determinants of emerging-market bond spreads: Cross-country evidence

Hong-Ghi Min; Duk-Hee Lee; Changi Nam; Myeong-Cheol Park; Sang-Ho Nam

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Dong-Hoon Yang

Information and Communications University

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Hyeongjik Lee

Information and Communications University

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Myeong-Cheol Park

Information and Communications University

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Youngsun Kwon

Information and Communications University

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