Mount T.D.,Cornell University |
Ju J.,Korea Information Society Development Institute
Energy Economics | Year: 2014
The goals of this paper are to 1) simulate the ex-ante riskiness of purchasing a TCC, and 2) evaluate the efficiency of the TCC market in New York State to determine if there is evidence of under-pricing. Three VAR models are estimated using only market data available before the auction. This model is then used to simulate the daily payouts of a TCC for the following summer. A Monte Carlo procedure simulates the daily summer temperatures, the levels of quantity demanded and prices over the summer months. The main empirical result is that the market price paid for the most important TCC, in terms of volume, (the Hudson Valley to New York City) is higher than the mean of the simulated payouts even though the actual payout was higher than the market price. The market prices for the other two TCCs are lower than the means of the simulated payouts, and as a result, there is no consistent evidence of under-pricing in this analysis of the market for six-month TCCs in the summer of 2006. © 2014 Elsevier B.V.
Lim S.,Ewha Womans University |
Shim H.,Korea Information Society Development Institute
Cyberpsychology, Behavior, and Social Networking | Year: 2016
This study aimed to explore the psychological determinants of smartphone multitasking. Smartphone multitasking comprises the following three different subtypes: multitasking with nonmedia activities, cross-media multitasking with nonsmartphone media, and single-device multitasking within the smartphone. The primary motivations for smartphone multitasking were first identified - efficiency, utility, and positive affect - and the ways in which they are associated with the three subtypes were examined; among the primary motivations, efficiency and positive affect predicted the degree of total smartphone-multitasking behavior. The personality traits that are pertinent to all of the primary motivations - need for cognition (NFC) and sensation seeking (SS) - were also investigated. Further analyses revealed that the motivations for and the extent of smartphone multitasking can vary as functions of a user's NFC and SS. In this study, NFC was not only a meaningful predictor of the cognitive needs that drive smartphone multitasking but also increased the likelihood of multitasking through its interaction with SS. © Copyright 2016, Mary Ann Liebert, Inc.
Park Y.,Korea Information Society Development Institute |
Koo Y.,Seoul National University
Telecommunications Policy | Year: 2016
Switching cost is an important factor for policy makers to consider because it sets a higher price for locked-in consumers by making the market less competitive. Though there has been some empirical research analyzing switching costs in the mobile telecommunications market, studies considering the characteristics of smartphones, which have their own operating systems and applications, are still rare. In this study, we conduct a hypothetical conjoint survey to analyze switching cost in the smartphone handset market and derive the cost by using the hierarchical Bayesian multinomial logit model to consider respondents' heterogeneity. Switching costs of handsets and OS are empirically estimated, and the magnitudes depend on the levels of searching cost, learning cost, and uncertainty when purchasing new smartphones. © 2016 Elsevier Ltd.
Park N.,Yonsei University |
Kim Y.-C.,Yonsei University |
Shon H.Y.,Cheil Worldwide |
Shim H.,Korea Information Society Development Institute
Computers in Human Behavior | Year: 2013
This study examined the factors affecting the South Korean people's use of smartphones within the framework of the technology acceptance model (TAM). Using an in-person survey (N = 852), the study confirmed the propositions of the TAM. The study also included individuals' psychological antecedents, such as motivations for social inclusion and instrumental use of smartphones, innovativeness, behavioral activation system (BAS), and locus of control. While the motivations and innovativeness verified previous studies' findings, BAS and locus of control demonstrated their unique contributions to explaining smartphone use. Smartphone dependency was also affected by the antecedents in the use of smartphones. © 2013 Elsevier Ltd. All rights reserved.
Shin J.,University of Texas at Austin |
Jo M.,University of Management and Economics |
Lee J.,University of Management and Economics |
Lee D.,Korea Information Society Development Institute
IEEE Transactions on Engineering Management | Year: 2014
The emergence of cloud computing services has led to an increased interest in the technology among the general public and enterprises marketing these services. Although there is a need for studies with a managerial relevance for this emerging market, the lack of market analysis hampers such investigations. Therefore, this study focuses on the end-user market for cloud computing in Korea. We conduct a quantitative analysis to show consumer adoption behavior for these services, particularly infrastructure as a service (IaaS). Bayesian mixed logit model and the multivariate probit model are used to analyze the data collected by a conjoint survey. From this analysis, we find that the service fee and stability are the most critical adoption factors. We also present an analysis on the relationship between terminal devices and IaaS, classified by core attributes such as price, stability, and storage capacity. From these relationships, we find that larger storage capacity is more important for mobile devices such as laptops than desktops. Based on the results of the analysis, this study also recommends useful strategies to enable enterprise managers to focus on more appropriate service attributes, and to target suitable terminal device markets matching the features of the service. © 1988-2012 IEEE.
Choi J.Y.,Hanyang University |
Jeong S.,Georgia Institute of Technology |
Kim K.,Korea Information Society Development Institute
Sustainability (Switzerland) | Year: 2015
Technology convergence indicates that technologies of different application areas are converted into a new and common unity of technology. Its range spans from inter-field, whereby technologies are converged between heterogeneous fields in homogeneous sector, to a wider inter-sector, whereby technologies belong to heterogeneous technology sector are converged. This paper determined the definition of technology convergence from previous literature and classified patents into technology category depending on patent information. Furthermore, we empirically measure technology convergence degree based on co-classification analysis and estimate its diffusion trend at the entire technology domain level by using overall 1,476,967 of patents filed to the KIPO (Korean Intellectual Property Office) from 1998 to 2010. As a result, potential size and growth rate of technology convergence are varied by both technology and type of technology convergence, i.e., inter-field and inter-sector technology convergence. Diffusion pattern of inter-sector technology convergence appears as the more various form than that of inter-field technology convergence. In a relationship between potential size and growth rate of technology convergence, growth rate of technology convergence is in inverse proportion to potential size of technology convergence in general. That is, the faster the growth rate of technology convergence, the smaller the potential size of technology convergence. In addition, this paper found that technology convergence of the instrument and chemistry sector is actively progressing in both inter-field and inter-sector convergence, while the technologies related to Information and Communication Technology (ICT) in electrical engineering sector have relatively mature progress of technology convergence, especially in inter-sector technology convergence. © 2015 by the authors.
Kim K.,Korea Information Society Development Institute |
Kim Y.,University of Management and Economics
Renewable and Sustainable Energy Reviews | Year: 2015
To develop renewable energy technologies for sustainable economic growth as well as environmental solutions, firms must consider domestic technological diffusion and foreign trade competitiveness. In this paper, we identify interrelations between domestic R&D and international trade as well as seek to determine the role of renewable energy policies. We estimate the model by using unbalanced panel data, obtained between 1991 and 2008, from 16 countries using solar PV and 14 countries using wind power. The empirical results confirm that international markets may affect domestic R&D of mature technologies more than that of immature technologies, and intensified domestic R&D corresponds to increased exports and imports. This study also shows that wind power is in a virtuous cycle with respect to R&D and exports. In addition, public R&D and tariff incentives are significant instruments for increasing international trade as well as domestic R&D. © 2015 Elsevier Ltd. All rights reserved.
Lee D.,Korea Information Society Development Institute |
Kim H.,National IT Promotion Agency
Telematics and Informatics | Year: 2014
The debate over network neutrality started with the appearance of new Internet application services that are latency sensitive and the use of broad bandwidth. These services are still diffusing, and more applications that use broader bandwidth with greater latency sensitivity are expected to be developed. To estimate precisely the effect of network neutrality regulation, it is necessary to forecast the number of end-users that will adopt application services. However, previous studies are limited in that they assume that the potential market and the final number of adopters are constant at the current market penetration level. By computational experiments, this research estimates the effect of network neutrality regulation considering the diffusion process of application services such as IPTV and VoIP. Additionally, it deduces the relation between the effect of network neutrality regulation and the level of diffusion of new Internet application services. © 2013 Elsevier Ltd. All rights reserved.
Lee S.-W.,Yonsei University |
Kim C.,Korea Information Society Development Institute
Journal of Broadcasting and Electronic Media | Year: 2011
This study investigated vertical foreclosure effects in the Korean cable tele-vision market. While it focuses mainly on vertical foreclosure, the study also examined reciprocal carriage between large vertically integrated cable op-erators. From the analysis of cross-sectional data regarding cable operators' carriage information in Korea, two conclusions were derived. First, vertically integrated cable operators tend to carry their affiliated channels and were less likely to carry their rivals' channels. Second, the data suggest that large vertically integrated cable operators were engaged in reciprocal carriage. © 2011 Broadcast Education Association.
Ryu H.,University of Management and Economics |
Dorjragchaa S.,Baganuur and South East Regional Network of the Electrical Distribution State Owned Stock Company |
Kim Y.,University of Management and Economics |
Kim K.,Korea Information Society Development Institute
Energy | Year: 2014
To compare electricity-generation fuel mixes in two countries with multiple energy policy goals and unique circumstances, we look at three scenarios reflecting the carbon emissions mitigation targets, differences in energy security levels, and electricity-generating costs of each nation. Korea and Mongolia show clear differences in electricity-generation structure related to import dependency, the potential of renewable energy, and threats to energy security. These variations lead to different decisions on the power-generation fuel mix plan. Use of fossil fuel resources in Korea results in carbon dioxide emissions and energy insecurity, while in Mongolia carbon emissions, also from fossil fuels, and energy insecurity are separate concerns as Mongolia domestically operates coal-fired power plants and imports electricity. Policies targeting two objectives, carbon emissions mitigation and energy security improvement, show complementarity in Korea as fossil fuels are replaced by renewables or nuclear power, but represent trade-offs in Mongolia as emissions mitigation and improved energy security cannot be achieved with one strategy. In conclusion, national plans to achieve two goals differ by country: In Korea, the appropriate portion of nuclear energy is the determining policy factor. In Mongolia, carbon capture and storage is the clear alternative for mitigating carbon emissions despite large renewables potential. © 2013 Elsevier Ltd.