Exploring game experiences and game leadership in massively multiplayer online role‐playing games     

YeiBeech Jang  SeoungHo Ryu 《British journal of educational technology : journal of the Council for Educational Technology》2011,42(4):616-623

This study explored the in‐game experiences of massively multiplayer online role‐playing game (MMORPG) players focusing on game leadership and offline leadership. MMORPGs have enormous potential to provide gameplayers with rich social experiences through various interactions along with social activities such as joining a game community, team play and others. In this study, a total of 808 Korean online gameplayers participated in an online survey. Amongst them, 300 MMORPG players were used as the final sample group. The results showed that joining a game community and playing in teams may help players build their leadership experience in games. The findings also suggest that there is a significant positive relationship between in‐game leadership and offline leadership. However, there were no significant differences in gender regarding in‐game and offline leadership. This study suggests that MMORPGs offer a useful place where people can grow their leadership skills and potentially transfer them into the real world.  相似文献   

Crowdfunding public projects: Collaborative governance for achieving citizen co-funding of public goods     

Sounman Hong  Jungmin Ryu 《Government Information Quarterly》2019,36(1):145-153

This study explores the potential of crowdfunding as a tool for achieving “citizen co-funding” of public projects. Focusing on philanthropic crowdfunding, we examine whether collaborative projects between public and private organizations are more successful in fundraising than projects initiated solely by private organizations. We argue that government involvement in crowdfunding provides some type of accreditation or certification that attests to a project's aim to achieve public rather than private goals, thereby mitigating information asymmetry and improving mutual trust between creators (i.e., private sector organizations) and funders (i.e., crowd). To support this argument, we show that crowdfunding projects with government involvement achieved a greater success rate and attracted a greater amount of funding than comparable projects without government involvement. This evidence shows that governments may take advantage of crowdfunding to “co-fund” public projects with the citizenry for addressing the complex challenges that we face in the twenty-first century.  相似文献   

“The Paradox of Narcissus and Echo in the Instagram Pond” in Light of the Selfie Culture from Freudian Evolutionary Psychology: Self-Loving and Confident but Lonely     

Seunga Venus Jin  Ehri Ryu 《广播与电子媒介杂志》2013,57(4):554-577

Drawing from the Freudian evolutionary psychology of narcissism and the literature on social media popularity, this article addresses the central theme revolving around “The Paradox of Digital Narcissists in the Instagram Pond” in light of the selfie/groupie culture. A cross sectional survey was conducted among 398 Instagram users (236 males and 162 females) recruited from Amazon M-Turk. Structural equation modeling analyses using Mplus 7.4 propose an integrative model of narcissism and reveal dynamic relationships among users’ narcissism, self-discrepancy, self-confidence, intrasexual competition for mates, need to belong, need for popularity, loneliness, number of selfie/groupie posts on Instagram, and number of Instagram followers/followings.  相似文献   

Survey Incentives: Cash vs. In-Kind; Face-to-Face vs. Mail; Response Rate vs. Nonresponse Error   总被引：1，自引：0，他引：1  

Ryu  Erica; Couper  Mick P.; Marans  Robert W. 《Int. Journal of Public Opinion Research》2006,18(1):89-106

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The Telos of Information Technology in a Transitional Culture: Implications for the Globalization of Korean Higher Education     

Chong‐Min Hyun  Eric Gilder 《Higher Education in Europe》1998,23(2):217-226

Taking Kyonggi University of Korea as a case example, the authors describe how its varied initiatives in the realm of information technology (IT) integration are affecting pedagogical and research practice, both theoretically and practically, with emphasis given to balancing access to higher education and quality. They also examine the impacts of IT in Korean society at large. They conclude with a summary consideration of the challenges to intellectual social life engendered or empowered by the embrace of high technology by academe.  相似文献   

A muted voice in academe: the Korean version of entrepreneurial scholarship     

Mikyung Ryu 《Higher Education》1998,35(1):9-26

The imperatives of social democratization and global economic competition have opened a new phase of development for the Korean university and its scholarship. The increased social demands for knowledge creation and dissemination gradually extend the scope of professional practice beyond the conventional areas of academic work. This paper explores, based upon the findings of a case study, how Korean universities and their professors have been responding to these demands and what consequences are observable. It also explains how the new demands and responses are contributing to local development. Finally, it highlights several controversial issues in the discourse on entrepreneurial scholarship and discusses these in the Korean context as points for further investigation.  相似文献   

Emergence of informal educative space out of an anonymous online bulletin board in Korea during the global economic crisis     

Dae Joong Kang  Seon Joo Choi  SeungHyeop Lee 《International Journal of Lifelong Education》2013,32(3):280-300

This study aimed to understand how people learn and teach informally in an anonymous online bulletin board, the primary purpose of which is not learning and teaching. We conducted a qualitative analysis of comments and replies tagged to the most popular postings of an anonymous online bulletin board, during the global economic crisis in 2008–2009. The bulletin board, Agora Economy Room, is housed in the Korean portal site, Daum. We found four interrelated collective activities—recognizing teaching presence, collaborating, labeling, and guarding—among the participants that made active informal learning and teaching possible. These activities had an effect on the characteristics of the emerging informal educative space in different ways. A conceptual map of the findings of this study is discussed as a conclusion.  相似文献   

Responses of endothelial cells to extremely slow flows     

Park JY  White JB  Walker N  Kuo CH  Cha W  Meyerhoff ME  Takayama S 《Biomicrofluidics》2011,5(2):22211

The process of blood vessel formation is accompanied by very minimal flow in the beginning, followed by increased flow rates once the vessel develops sufficiently. Many studies have been performed for endothelial cells at shear stress levels of 0.1-60 dyn∕cm(2); however, little is known about the effect of extremely slow flows (shear stress levels of 10(-4)-10(-2) dyn∕cm(2)) that endothelial cells may experience during early blood vessel formation where flow-sensing by indirect mass transport sensing rather than through mechanoreceptor sensing mechanisms would become more important. Here, we show that extremely low flows enhance proliferation, adherens junction protein localization, and nitric oxide secretion of endothelial cells, but do not induce actin filament reorganization. The responses of endothelial cells in different flow microenvironments need more attention because increasing evidence shows that endothelial cell behaviors at the extremely slow flow regimes cannot be linearly extrapolated from observations at faster flow rates. The devices and methods described here provide a useful platform for such studies.  相似文献   

Non-positional cell microarray prepared by shape-coded polymeric microboards: A new microarray format for multiplex and high throughput cell-based assays     

Nam SH  Lee HJ  Son KJ  Koh WG 《Biomicrofluidics》2011,5(3):32001-3200110

A non-positional (or suspension) cell microarray was developed using shape-coded SU-8 photoresist microboards for potential application in multiplex and high-throughput cell-based assays. A conventional photolithography process on glass slides produced various shapes of SU-8 micropatterns that had a lateral dimension of 200 μm and a thickness of 40 μm. The resultant micropatterns were detached from the slides by sonication and named "microboards" due to the fact that had a much larger lateral dimension than thickness. The surfaces of the SU-8 microboards were modified with collagen to promote cell adhesion, and it was confirmed that collagen-coated SU-8 microboards supported cell adhesion and proliferation. Seeding of cells into poly(ethylene glycol)(PEG) hydrogel-coated well plates containing collagen-modified microboards resulted in selective cell adhesion onto the microboards due to the non-adhesiveness of PEG hydrogel toward cells, thereby creating non-positional arrays of microboards carrying cells. Finally, two different cell types (fibroblasts and HeLa cells) were separately cultured on different shapes of microboards and subsequently mixed together to create a non-positional cell microarray consisting of multiple cell types where each cell could be easily identified by the shape of the microboard to which they had adhered. Because numerous unique shapes of microboards can be fabricated using this method by simply changing the photomask designs, high throughput and multiplex cell-based assays would be easily achieved with this system in the future.  相似文献   

Cascaded spiral microfluidic device for deterministic and high purity continuous separation of circulating tumor cells     

Tae Hyun Kim  Hyeun Joong Yoon  Philip Stella  Sunitha Nagrath 《Biomicrofluidics》2014,8(6)

Inertial microfluidics is an emerging class of technologies developed to separate circulating tumor cells (CTCs). However, defining design parameters and flow conditions for optimal operation remains nondeterministic due to incomplete understanding of the mechanics, which has led to challenges in designing efficient systems. Here, we perform a parametric study of the inertial focusing effects observed in low aspect ratio curvilinear microchannels and utilize the results to demonstrate the isolation of CTCs with high purity. First, we systematically vary parameters including the channel height, width, and radius of curvature over a wide range of flow velocities to analyze its effect on size dependent differential focusing and migration behaviors of binary (10 μm and 20 μm) particles. Second, we use these results to identify optimal flow regimes to achieve maximum separation in various channel configurations and establish design guidelines to readily provide information for developing spiral channels tailored to potentially arbitrary flow conditions that yield a desired equilibrium position for optimal size based CTC separation. Finally, we describe a fully integrated, sheath-less cascaded spiral microfluidic device to continuously isolate CTCs. Human breast cancer epithelial cells were successfully extracted from leukocytes, achieving 86.76% recovery, 97.91% depletion rate, and sustaining high viability upon collection to demonstrate the versatility of the device. Importantly, this device was designed without the cumbersome trail-and-error optimization process that has hindered the development of designing such inertial microfluidic systems.  相似文献