• Journal of Korea Multimedia Society
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• v.7 no.7
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• pp.922-933
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• 2004

In recent years, peer-to-peer network have a greate deal of attention for distributed computing or collaborative application, and work of ID-based public key systems have been focusing on the area of cryptography. In this paper, we propose ID-based group key management protocols for secure communication in autonomous peer group. Each member obtains his public/private key pair derived from his identification string from Private Key Generator. No central server participates in group key management protocol instead, all group members share the burden of group key management by the collaboration of themselves, so that our scheme avoids the single point of failure problem. In addition, our scheme considers the nature of dynamic peer group such as frequent joining and leaving of a member.

• Asian Journal for Public Opinion Research
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• v.1 no.4
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• pp.249-267
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• 2014

Social media is being increasingly utilized in disaster relief work to identify safety issues, locate displaced-victims, and seek or provide support for those who need help. The presence of social media in disaster management has changed significantly in recent years, as it was not prevalent in the 2008 Wenchuan earthquake, but had become a powerful force in the 2013 Ya'an earthquake. This paper discusses the development of social media in disaster management via making a comparison between how it functioned in the two earthquakes. It examines the following aspects: who are the stakeholders that use social media in the earthquake management; how do they adopt this means in response to the earthquakes; and what are the outcomes of adopting social media with regards to public engagement and collaboration in an emergency event. As Sina Weibo acts as the equivalent of China's Twitter, the methodology relies on an analysis of posts in Weibo. The outcomes primarily show that: (1) authorities, celebrities and the public actively adopted social media for the purpose of information dissemination and resource mobilization; and (2) social media users are both content consumers and content generators in the times of earthquakes. The study concludes that social media as a backchannel communication tool is helpful for government institutions, corporations, and nonprofit organizations to build relationships with their stakeholders in the disaster management cycle. The result will interest academics and emergency management practitioners who are concerned with improving disaster communication.

• Special Issue of the Society of Naval Architects of Korea
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• 2007.09a
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• pp.57-67
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• 2007

As the competition among commercial shipyards gets more intense and the number of ships to be designed is increasing significantly, the state is that engineering work volume has increased proportionately. Under these conditions, various attempts have been tried to improve performance in design activities and it has come to a vital issue as to how the design process should be managed and conducted in more efficient manner. To achieve this goal, an engineering process management system has been developed, named 'DSME Engineering Wizard System'. It aims to accelerate process performance by managing execution, promoting collaboration and maximizing engineering data reusability based on workflow concept. For the application of this system, Marketing Design which is one of the major processes for commercial ship design was analyzed and established into a unique workflow template consisting of activities, getting design experiences organized into a best practice in which engineering tasks are performed in the way proven most efficient.

• Journal of Korean Critical Care Nursing
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• v.11 no.3
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• pp.58-70
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• 2018

Purpose : This study examined the factors influencing posttraumatic and conflict management styles for nursing performance in intensive care units (ICUs). Methods : In this study, 250 nurses from eight general hospitals in three cities participated. Structured self-report questionnaires were used to collect data on posttraumatic, conflict management styles, and nursing performance. Finally, the data were analyzed by SAS 9.3 program. Results : The mean of total sum scores was 31.29, and the high risk of posttraumatic symptoms was 61.2%. It was noted that nursing performance is significantly correlated with collaboration, compromise, accommodation styles, and intrusion. Collaboration styles (${\beta}=0.39$, p<.001) and hyperarousal (${\beta}=-0.22$, p=.050), ICU experience below 1 year (${\beta}=-0.21$, p=.027) and that of 5-10 years (${\beta}=-0.19$, p=.049), and compromise style (${\beta}=0.16$, p=.049) were found to be the factors influencing nursing performance with 35.9% explanatory power value of regression model. Conclusions : The results of the study reveal that conflict management styles, hyperarousal, and ICU experience are factors predicting the successful performance of ICUs. These findings emphasize the need of developing interventions to reduce stress symptoms and conflicts in ICUs.

• Journal of Information Technology Applications and Management
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• v.25 no.4
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• pp.185-196
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• 2018

This study investigates the social network among authors to improve the quality of Panel researches. Korea Health Panel (KHP), implemented by the collaborative work between KIHASA (Korea Institute for Health and Social Affairs) and NHIC (National Health Insurance Service) since 2008, provides a critical infrastructure for policy making and management for insurance system and healthcare service. Using bibliographic data extracted from academic databases, eighty articles were extracted in domestic and international journals from 2008 to 2014, April. Data were analyzed by NetMiner 4.0, social network analysis software, to identify the extent to which authors are involved in healthcare use research and the patterns of collaboration between them. Analysis reveals that most authors publish a very small number of articles and collaborate within tightly knit circles. Centrality measures confirm these findings by revealing that only a small percentage of the authors are structurally dominant, and influence the flow of communication among others. It leads to the discovery of dependencies between the elements of the co-author network such as affiliates in health panel communities. Based on these findings, we recommend that Korea Health Panel could benefit from cultivating a wider base of influential authors and promoting broader collaborations.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.13 no.9
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• pp.4555-4571
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• 2019

Due to increasing interest in distributed agile software development, there is a need to systematically review the literature on challenges encountered in the agile software development environment. Using the Systematic Literature Review (SLR) approach, 32 relevant publications, dated between 2013 and 2018 were selected from four electronic databases. Data from these publications were extracted to identify the key challenges across the system development life cycle (SDLC) phases, which essentially are short phases in each agile-based iteration. 5 types of key challenges were identified as impacting the SDLC phases; these challenges are Communication, Coordination, Cooperation, Collaboration and Control. In the context of the SLDC phases, the Communication challenge was discussed the most often (79 times, 33%). The least discussed challenges were Cooperation and Collaboration (26 times, 11% each). The 5 challenges occur because of distances which occur in distributed environment. This SLR identified 4 types of distances which contribute to the occurrence of these key challenges - physical, temporal, social-cultural and knowledge/experience. Of the 32 publications, only 4 included research which proposed new solutions to address challenges in agile distributed software development. The authors of this article believe that the findings in this SLR are a resource for future research work to deepen the understanding of and to develop additional solutions to address the challenges in distributed agile software development.

• Journal of the Architectural Institute of Korea Planning & Design
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• v.34 no.7
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• pp.89-98
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• 2018

Koolhaas' perspective on urbanism differs from the modern urbanism and typological urbanism. The Melun-Senart masterplan, La $D{\acute{e}}fense$ masterplan shows unique characteristic different from that of conventional urbanism. The roots of this creative approach can be found in the traits of his research with O.M. Ungers back in the 1970s. Koolhaas and Ungers have collaborated intimately from 1972 to 1977 to work on urban projects. This collaboration reaches its cilmax in their project City in the City, where many of Koolhaas' core concepts such as archipelago, void/solid, plurality, infrastructure, congestion, and social condenser are introduced. This thesis will explore the development of these concepts in their collaboration and shed new light on how this period has made a transition into Koolhaas' perspective on urbanism and architecture as well as his works. The purpose of this study is to investigate these core concepts of Koolhaas in City in the City, and to find the development and the meaning of these concepts in his projects.

• Journal of Advanced Information Technology and Convergence
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• v.10 no.2
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• pp.111-123
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• 2020

The core competencies for the 21st century are creativity, critical thinking, collaboration, and communication. In recent classes where ICT (information, communication, and technology) is grafted, a lot of efforts are also being made to increase such competencies. According to a research work, ICT is most often used as a communication channel between teachers and students or as an online collaboration tool among students. However, ICT has only played a role as a guideline for instruction, but not included in the curriculum until now. The research on methods how to integrate technology into teaching and learning is in full swing due to the development of technology and the advent of Covid-19. In this paper, we propose a technology integration hierarchy model, namely K-TIHM that can be combined with STEAM education. Since only learning environments have been proposed in the existing research for technology-based STEAM education, our model proposes a series of technology integration hierarchy that can be applied by school age along with STEAM. Also, we analyze the differences in among the Korea's ICT education operation guidelines, the Korea's Software education guidelines, and ours. The proposed model can help developing the primary and secondary school curriculum integrated with technology.

• Journal of Distribution Science
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• v.21 no.6
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• pp.31-38
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• 2023

Purpose: This paper investigates how companies respond to government regulations and disasters in a risk-managed society, and aims to initiate discussions on the future prospects and challenges. Specifically, it explores how companies can plan to respond to such disasters in the future, and stresses that the law should be to protect people's lives and ensure safety, rather than to punish companies. Research design, data and methodology: The study methodology is based on a review of existing literature, as well as trend analysis through big data analysis. The research analyzes the discourse in our society regarding the enactment of the Serious Accident Punishment Act. Results: This study supports that the Serious Accident Punishment Act should be implemented in a manner that does not impede corporate activities, but rather helps to ensure the safety of citizens' daily lives. The authors call for collaboration between communities, labor unions, and companies in achieving a cooperative governance system for a safer society. Conclusions: It highlights the importance of addressing disasters and government regulations in the context of a risk-managed society, and offers insights for both companies and policymakers on how to navigate these challenges. By prioritizing safety and cooperation, we can work towards building a safer and more resilient society

• International conference on construction engineering and project management
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• 2009.05a
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• pp.331-337
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• 2009

This paper summarizes some of approaches that could be taken for data exchange in a non-interoperable work environment and reports lessons learned from the Dongdaemun Design Plaza and Park project. Today's widespread application of building information modeling (BIM) to the construction and architectural design industries requires a change in the cooperation between business organizations and their methods of communication. In particular, the interoperability of information between interdisciplinary organizations, which use specific programs for different purposes, has become a critical issue. More than just a technical problem, it is also highly related to an organization's collaboration culture and the particulars of a specific project. This paper describes the interoperability issue that occurred during the construction documentation phase of the irregularly shaped building project, Dongdaemun Design Plaza and Park, designed by Zaha Hadid Architects and Samoo Architects and Engineers, from the perspective of the technological problem and the collaborative organizations' communications. Although the perfect compatibility of information is not possible, this paper deals with a practical approach to the interoperability issue by examining the way the end-users of computer-aided design (CAD) resolved the interoperability problems in practice.