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Institution

Korea University

EducationSeoul, South Korea
About: Korea University is a education organization based out in Seoul, South Korea. It is known for research contribution in the topics: Population & Thin film. The organization has 39756 authors who have published 82424 publications receiving 1860927 citations. The organization is also known as: Bosung College & Bosung Professional College.


Papers
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Journal ArticleDOI
TL;DR: In this article, the authors report on a study that attempts to expand the set of post-adoption beliefs in the expectation-confirmation model (ECM) in order to extend the application of the ECM beyond an instrumental focus.
Abstract: The expectation-confirmation model (ECM) of IT continuance is a model for investigating continued information technology (IT) usage behavior. This paper reports on a study that attempts to expand the set of post-adoption beliefs in the ECM, in order to extend the application of the ECM beyond an instrumental focus. The expanded ECM, incorporating the post-adoption beliefs of perceived usefulness, perceived enjoyment and perceived ease of use, was empirically validated with data collected from an on-line survey of 811 existing users of mobile Internet services. The data analysis showed that the expanded ECM has good explanatory power (R^2=57.6% of continued IT usage intention and R^2=67.8% of satisfaction), with all paths supported. Hence, the expanded ECM can provide supplementary information that is relevant for understanding continued IT usage. The significant effects of post-adoption perceived ease of use and perceived enjoyment signify that the nature of the IT can be an important boundary condition in understanding the continued IT usage behavior. At a practical level, the expanded ECM presents IT product/service providers with deeper insights into how to address IT users' satisfaction and continued patronage.

931 citations

Book ChapterDOI
01 Jan 2012
TL;DR: In this paper, a review of recent classroom-based, longitudinally designed research reveals three new and important functions of student engagement, namely, that student engagement fully mediates and explains the motivation-to-achievement relation, that changes in engagement produce changes in the learning environment, and that change in engagement produces changes in motivation, as students' behavioral, emotional, cognitive, and agentic engagements represent actions taken not only to learn but also to meet psychological needs.
Abstract: This chapter pursues three goals. First, it overviews ­self-­determination theory (SDT). SDT is a macrotheory of motivation comprised of five interrelated minitheories—basic needs theory, organismic integration theory, goal contents theory, cognitive evaluation theory, and causality orientations theory. Each minitheory was created to explain specific motivational phenomena and to address specific research questions. Second, the chapter uses the student-teacher dialectical framework within SDT to explain how classroom conditions sometimes support but other times neglect and frustrate students’ motivation, engagement, and positive classroom functioning. Third, the chapter highlights student engagement. In doing so, it overviews recent classroom-based, longitudinally designed research to reveal three new and important functions of student engagement—namely, that student engagement fully mediates and explains the motivation-to-achievement relation, that changes in engagement produce changes in the learning environment, and that changes in engagement produce changes in motivation, as students’ behavioral, emotional, cognitive, and agentic engagements represent actions taken not only to learn but also to meet psychological needs. The chapter concludes with implications for teachers and with suggestions for future research.

909 citations

Journal ArticleDOI
TL;DR: This tutorial review provides a structured description of the main classes of organic photothermal agents and their characteristics and highlights recent advances in using PTT agents to address various cancers indications.
Abstract: Over the last decade, organic photothermal therapy (PTT) agents have attracted increasing attention as a potential complement for, or alternative to, classical drugs and sensitizers involving inorganic nanomaterials. In this tutorial review, we provide a structured description of the main classes of organic photothermal agents and their characteristics. Representative agents that have been studied in the context of photothermal therapy since 2000 are summarized and recent advances in using PTT agents to address various cancers indications are highlighted.

891 citations

ReportDOI
TL;DR: In this article, a multinomial logistic regression model is proposed to evaluate contagion in financial markets, which captures the coincidence of extreme return shocks across countries within a region and across regions.
Abstract: This article proposes a new approach to evaluate contagion in financial markets. Our measure of contagion captures the coincidence of extreme return shocks across countries within a region and across regions. We characterize the extent of contagion, its economic significance, and its determinants using a multinomial logistic regression model. Applying our approach to daily returns of emerging markets during the 1990s, we find that contagion is predictable and depends on regional interest rates, exchange rate changes, and conditional stock return volatility. Evidence that contagion is stronger for extreme negative returns than for extreme positive returns is mixed.

879 citations


Authors

Showing all 40083 results

NameH-indexPapersCitations
Anil K. Jain1831016192151
Hyun-Chul Kim1764076183227
Yongsun Kim1562588145619
Jongmin Lee1502257134772
Byung-Sik Hong1461557105696
Daniel S. Berman141136386136
Christof Koch141712105221
David Y. Graham138104780886
Suyong Choi135149597053
Rudolph E. Tanzi13563885376
Sung Keun Park133156796933
Tae Jeong Kim132142093959
Robert S. Brown130124365822
Mohammad Khaja Nazeeruddin12964685630
Klaus-Robert Müller12976479391
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
2023121
2022611
20216,359
20206,208
20195,608
20185,088