Academic research in media policy, digital platform regulation, and media economics.
Last updated: April 2026
Peer-reviewed publications in academic journals
This study examines factors driving subscriber migration from traditional pay-TV to OTT services using the push-pull-mooring framework, analyzing switching behavior in the evolving media consumption landscape.
This paper examines the interaction between television-based home shopping and mobile applications in Korea's evolving digital market. Using monthly panel data from four major home shopping companies (2021-2023), we apply fixed-effects models to identify cross-channel effects. We find that higher TV viewership predicts increased mobile engagement, and that sustained app use supports user retention. TV and mobile function as sequential complements rather than substitutes — a 'reverse showrooming' pattern where television builds trust through live demonstrations while mobile apps provide transaction convenience.
We analyze platform power dynamics in Korea's home shopping industry, examining how market asymmetries shape competitive advantages and sustainability outcomes for television commerce platforms.
This paper evaluates operational efficiency of media companies using Data Envelopment Analysis and Malmquist productivity indices, providing insights into performance trends and competitive positioning in the media industry.
This study investigated the direct and indirect impacts of financial investment connectedness and Information and Communication Technology (ICT) on countries' intellectual property (IP) strategies. By utilizing the panel logit model on longitudinal country-level data, we found that countries' positions in the global financial investment network significantly affect their IP strategies.
This study aims to use ISM to identify the enablers affecting the acceptance of IoT services. For this purpose, this study conducted an ISM analysis and a MICMAC analysis, extracted the enablers from Internet of Things-An Action Plan for Europe published by the EU for the research, and conducted interviews and surveys.
This study analyzed the efficiency of global major mobile operators and the reason for their efficiency. For this purpose, the financial data of 96 operators in 40 OECD member countries were utilized.
An information system (IS) upgrade is an essential way to enhance the competitiveness of an organization. Specifically, the decision making processes surrounding IS upgrades is one of the most important parts of an organization's competitiveness in regard to business sustainability.
This study aims to examine Gov. 3.0 (E-government) efficiency of 42 central administrative agencies in Republic of Korea and to identify the critical factors which can have an influence on the improvement of Gov.
This study aims to comprehensively examine the adoption of smart home service. A new model combining VAM (Value-based Adoption Model) and TAM (Technical Acceptance Model) was developed and analysed with a set of variables from Unified Theory of Acceptance and Use of Technology and Elaboration Likelihood Model.
With the advancement of information and communications technologies, market related to Virtual Reality (VR) using mobile-based devices has been rapidly expanded. Global companies such as Google, Facebook, SONY and Samsung Electronics have competed for the preoccupancy in the virtual reality market by introducing products and services in the area of game, education, and tourism.
This study examines factors affecting adoption of mobile payment services in the Fintech industry, analyzing user acceptance patterns and behavioral intentions toward mobile financial technology services.
This paper identifies industrial characteristics of portal sites using stochastic frontier analysis and tobit regression, proposing that market share and appropriate fixed assets have positive impacts on portal site efficiency.
Terrestrial TV service operators have begun to represent an increasing share of content production in the media industry. However, despite its importance, there are relatively few studies about the efficiency of terrestrial TV operators.
Research projects currently under development
This study analyzes the structural crisis in Korea's media industry financing and the unintended consequences of broadcasting reapproval investment requirements. Using panel fixed effects regression on 10 years of financial data (2015-2024) from major cable networks, we document a significant crowding-out effect: government broadcasting development fund contributions of KRW 43.1 billion are associated with investment reductions of KRW 73.3-164 billion, representing a 1.7-3.8 times crowding-out multiplier. Investment ratio requirements reduce ROI significantly, while the 44-year freeze on public broadcasting license fees and 43.5% collapse in broadcast advertising revenue compound the financing crisis. We propose a comprehensive reform roadmap including abolition of rigid investment mandates, revenue-linked alternatives, and license fee normalization.
Research papers under review or revision
This paper develops a stochastic R&D model of platform investment under mandatory data portability. A Hotelling microfoundation disciplines the revenue-displacement channel. R&D uncertainty and portability are complementary distortions: regulation erodes appropriability while uncertainty reduces the probability of recouping investment, and together they depress investment more than either force alone. When portability is sufficiently strong, entrants substitute imitation for own innovation, producing a dual R&D loss. The paper constructs a Data Portability Regulatory Index and calibrates to Korea's MyData initiative in the financial sector. The calibration implies a welfare inversion: Korea's regime generates deadweight loss more than twice the unregulated monopoly benchmark, because consumer switching benefits only partially offset innovation losses. A more moderate regime resembling the EU's GDPR delivers higher welfare. Behavioral monitoring attains 90.5 percent of first-best welfare while preserving appropriability; structural mandates do neither.
Digital technologies have transformed daily life, yet research on digital inequality has focused primarily on access and skills rather than on how people structure their digital engagement across time. Here, we introduce the concept of digital time fragmentation---the degree to which digital use is scattered versus consolidated throughout the day---and examine its socioeconomic patterning using longitudinal time-use diary data from 5,644 individuals in South Korea (2017-2024). We document a Digital Access Paradox: as smartphone penetration approached saturation, low-socioeconomic status individuals shifted from lower-than-average digital fragmentation to higher-than-average fragmentation, a reversal of 0.154 standard deviations. Event study analysis reveals that limited access constrained digital engagement among low-SES groups in 2017; by 2021, a quality gap emerged where low-SES individuals devoted 95% of their digital time to passive consumption compared to 74% among high-SES individuals. These findings identify temporal structure as a distinct dimension of digital inequality that emerges precisely as access gaps close.
Publications in Korean academic journals (KCI)
규제 샌드위치 효과: 플랫폼 규제 논의에 대한 기업 규모별 시장 반응