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Dive into the research topics where Hyun Joon Chang is active.

Publication


Featured researches published by Hyun Joon Chang.


Telematics and Informatics | 2014

Determinants of player acceptance of mobile social network games: An application of extended technology acceptance model

Eunil Park; Seo In Baek; Jay Young Ohm; Hyun Joon Chang

In recent years, mobile devices and social network games (SNGs) have gained wide popularity among the mainstream users. The present study aims to investigate the psychological elements that may contribute to user behaviors regarding mobile-social network games (M-SNGs). This study introduces an integrated model for M-SNGs. Statistical results from an online survey of players of M-SNGs indicate that the proposed research model effectively demonstrates and examines player acceptance of and attitudes toward M-SNGs. This research model is valid, and illustrates not only perceived enjoyment and usefulness as determinant variables of intention to use among players, but also perceived mobility together with perceived control and skill as motivational factors for players. The results also describe that satisfaction has a moderate role, which in turn has significant effects on multiple connections in the research model. Both theoretical and practical implications are provided based on the findings.


Engineering Management Journal | 2015

Post-Catch-Up Strategy for Medium-Sized South Korean Firms: Improving Technological Capabilities by Balancing R&D Intensity and Open Innovation

Jiwon Paik; Hyun Joon Chang

Abstract This study examines how R&D intensity and open innovation affect the technological capabilities of firms in newly-developed countries, such as South Korea. East Asian latecomers are transitioning from a catch-up phase toward becoming leaders, and they are engaging in open innovation activities to drive this transition. This research quantitatively analyzes three kinds of open innovation activities—outside-in, inside-out, and coupled—to investigate their influence upon technological capabilities, while also considering the effect of R&D intensity. Data from 75 South Korean medium-sized firms were analyzed, and two major findings are reported. First, technological capabilities are enhanced by some open innovation activities and by R&D intensity. Second, R&D intensity negatively moderates the impact of open innovation activities on technological capabilities. Therefore, it may be concluded that firms with relatively low R&D intensity will gain the most benefit from increasing their open innovation activities.


Information Technology for Development | 2014

What is the Right R&D Strategy for Overcoming the Difficulties of the South Korean IT Industry?

Eunil Park; Sang Jib Kwon; Heetae Kim; Jay Young Ohm; Hyun Joon Chang

This study proposes new strategies for the information technology (IT) industry in South Korea, provides objectives for the South Korean IT industry and articulates the roles of the Korean government agencies, companies and users. Specifically, it covers South Korean IT strategies employed during several periods, including a stagnant period and a more recent period reflecting new successful IT environments of developed countries. South Korean IT companies should recognize the importance of user interface and user experience technologies as a next key global IT industry trend. Raising this awareness is critical in increasing the global competitiveness of the Korean IT industry. Furthermore, South Korean government agencies should take more active role in constructing and improving interactive environments that would benefit both companies and users. For future research, it is imperative to investigate the specific roles of companies, users and government agencies with respect to IT usage.


Renewable Energy | 2014

Optimal green energy management in Jeju, South Korea – On-grid and off-grid electrification

Heetae Kim; Seo In Baek; Eunil Park; Hyun Joon Chang


Sustainability | 2014

Optimized Renewable and Sustainable Electricity Generation Systems for Ulleungdo Island in South Korea

Kyeongsik Yoo; Eunil Park; Heetae Kim; Jay Y. Ohm; Taeyong Yang; Ki Joon Kim; Hyun Joon Chang; Angel P. del Pobil


Renewable Energy | 2014

An integrated adoption model of solar energy technologies in South Korea

Heetae Kim; Eunil Park; Sang Jib Kwon; Jay Y. Ohm; Hyun Joon Chang


Sustainability | 2015

Optimal Hybrid Renewable Power System for an Emerging Island of South Korea: The Case of Yeongjong Island

Seoin Baek; Heetae Kim; Hyun Joon Chang


Energy Policy | 2012

Experience curve analysis on South Korean nuclear technology and comparative analysis with South Korean renewable technologies

Dong Wook Kim; Hyun Joon Chang


Sustainability | 2016

Comparative analysis of on- and off-grid electrification The case of two South Korean islands

Heetae Kim; Seoin Baek; Kyu Ha Choi; Dojin Kim; Seongmin Lee; Dahill Kim; Hyun Joon Chang


Sustainability | 2016

Optimal Hybrid Renewable Airport Power System: Empirical Study on Incheon International Airport, South Korea

Seoin Baek; Heetae Kim; Hyun Joon Chang

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