• Journal of the Computational Structural Engineering Institute of Korea
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• v.21 no.1
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• pp.59-71
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• 2008

In this paper, a software framework that integrates computational and experimental simulation has been developed to simulate and test a large-scale structural system under earthquake loading. The proposed software framework does not need development of the computer codes for both dynamic and static simulations. Any general-purpose software can be utilized with a main control module and interface APIs. This opens up a new opportunity to facilitate use of sophisticated finite elements into hybrid simulation regime to enhance accuracy and efficiency of simulations. The software framework described in the paper is modular and uses object oriented programming concepts. A series of illustrative examples demonstrate that the system is fully-functional and is capable of running any number of experimental and/or analytical components.

• The Transactions of the Korea Information Processing Society
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• v.7 no.10
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• pp.3049-3054
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• 2000

In this paper, the effects of the hardware components and runtime environments on the overall performance of a distributed shared memory system are analyzed through simulation. In simulation, the system is modeled using PARSE[1.2] closely to the real runtime environment and the 2D FFT is virtually executed on it. The results of simulation show that the minor hardware components such as bus interfaces and local bus of a processor, which are usuallyignored or neglected when analyzing performance. have significant impacts on the overall system performance. Performance variations caused from runtime environments such as loop overhead and code optimuzatio are also analyzed quantitatively.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.1
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• pp.393-401
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• 2021

This study derives essential information elements that should be shared in the situation board by utilizing the concept of common operating picture (COP). The COP's concept and actual overseas cases were confirmed, and COP information elements that should be considered for disaster situations were redefined. The COP disaster response information elements were derived by analyzing the standard manual for disaster response and daily situation reports issued in Korea. The information elements were divided into four stages (①Report reception and recognition stages, ②Situation propagation and reporting stages, ③Emergency equipment operation stages, ④Recovery and recovery stages), centered on storm and flood damage. Further analysis of the detailed information elements was conducted to derive the information elements that must be shared in the context board. The information is shared along with spatial and geographical characteristics due to the characteristics of the COP, providing complex information to decisionmakers and officials, enabling diverse access to disaster situations. Furthermore, it is expected that disaster response will be more efficient by sharing the information in common.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.22 no.2
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• pp.153-161
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• 2009

A domain/boundary decomposition method is applied for efficient analyses of thermo-elasto-viscoplastic damage and contact problems under the assumption of infinitesimal deformation. For the decomposition of a whole domain and contact boundaries, all the equality constraints on the interface and contact interfaces are restated with simple penalty functional. Therefore, the non-linearity of the problem is localized within finite element matrices in a few subdomains and on contact interfaces. By setting up suitable solution algorithms, the computational efficiency can be improved considerably. The general tendency of the computational efficiency is illustrated with some numerical experiments.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.40 no.11
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• pp.972-978
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• 2012

This paper discusses the parallelization of multifrontal solution method, widely used for finite element structural analyses, for a shared memory architecture. Multifrontal method is easier than other linear solution methods because the solution procedure implies that unknowns can be eliminated simultaneously. Two innovative ideas are introduced to achieve optimal solver performance on a shared memory computer. Those are pairing two frontal matrices and splitting the frontal matrix in order to reduce the temporal memory space required by independent computing tasks. Performance comparisons between original algorithm and proposed one prove that proposed method is more computationally efficient on current multicore machines.

• Journal of the Korean Society for information Management
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• v.40 no.3
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• pp.25-54
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• 2023

At a time when open data receives attention as an international trend, there is a need to discuss the role of international journals in Korea to support data sharing. Based on surveys and interviews of editors from the international journals, we identified factors affecting the policy adoption and examined the journal editors' perception on the adoption and components of the data sharing policy. As a result, scholarly journals that have adopted or are planning to adopt policies have recognized that data sharing is an international trend and can contribute to research development, but they stressed that efforts to improve the perception of data sharing were still necessary. Educational activities and compensation for sharing data were needed at scholarly journals' and communities' level. Also, components perceived important and selected by more than half of the editors as mandatory were 'data availability statement', 'data sharing level', 'data sharing method', and 'data citation'. While scholarly journals do not always need to mandate data sharing, it was necessary to mention conditions where data cannot be shared through data availability statements. The role of the organization developing and operating a repository appropriate for situations in Korea was also emphasized. In addition, by identifying factors affecting the policy adoption, significant differences were found in Journal Impact Factor quartiles, publication type, and subject area. This finding indicated that journals with a high impact factor are likely to have resources to support data sharing, and open access or hybrid journals are likely to have interest in open data as a part of open science. In the medical research area, active movements for data sharing in academic communities have promoted the adoption of data sharing policies. This study would be used as basic data to facilitate the adopton and operation of scholarly journals' data sharing policies in Korea.

• Cartoon and Animation Studies
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• s.40
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• pp.423-442
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• 2015

In a digital environment that is keep in change content from smart phones to tablet PC are a social network service is holding deep place in our lives. Social networking applications has building a network and communication with others than other application, it means that Social networking applications are sharing not only personal purpose in that trend of variety and competition of these social networks can be expected to trend and be developed thru analysis of user certification. this study of social network service application is proposed to developing of application thru analyze the two-effective application which is high ranked in google store. the theoretical foundation was set based on the seven elements of the social network service of the information structures designed by Jean Smith. This study proceeded analysis is for the functional elements of Facebook and Instagram, and the advantages and disadvantages through survey research. As a result of the empirical analysis to user of Instagram and face book of communication, identity, satisfaction for the group are equally. Instagram is about the presence, reputation, and Facebook has had a high level of satisfaction for each sharing and relationship. Facebook got high satisfaction from sharing features, but user feel of discomfort in the randomly showing advertising content. Instagram is not showing off advertise on common page of content, it is good point to be complementary to facebook. And, Instagram hashtag is good for convenience, but satisfaction is high with Facebook. in order to increase the satisfaction of Instagram, it is necessary to consider the main advantage of the communication and the functional aspects of the share from facebook.

• Journal of The Korean Association For Science Education
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• v.43 no.2
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• pp.125-137
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• 2023

This study analyzed the types of knowledge building discourse and knowledge building processes in small group learning using augmented reality. Eight 8th grade students took classes using augmented reality in solubility, boiling and melting points. These classes were carried out twice and all the classes were videotaped and recorded. Every student participated in a semi-structured interview. In the types of knowledge building discourse, the proportion of knowledge sharing and knowledge construction was similar. Beneath the knowledge sharing, the proportion of introductory level discussion was higher than identifying key elements of augmented reality. Recalling existing knowledge rarely appeared. Under the knowledge construction, the proportion of advanced level discussion was the highest and the proportion of sharing and critiquing ideas at a different level and efforts to rise above current levels of explanation was similar. The introductory level discussion and identifying key elements of augmented reality were developed into efforts to rise above current levels of explanation and sharing and critiquing ideas at a different level. Visualized results of knowledge building processes showed all the students' graph drew an upward curve, though cumulative number of impact value was different by each student. As a result of the study, effective ways of improving small group learning using augmented reality are discussed.

• Proceedings of the Korean Information Science Society Conference
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• 2010.06d
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• pp.240-243
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• 2010

본 연구에서는 산업 안전 서비스를 위한 IP-USN 기반의 멀티미디어 공동작업 환경에서 응용 소프트웨어와 미디어 등의 프로세스(process) 요소들에 대한 오류를 미리 감지하여 오류 공유 시스템을 이용하여 신속하고 정확하게 전달하여서 복구하는데 빠르게 대처할 수 있는 시스템을 제안한다. 감지된 오류는 오류 공유 시스템을 이용하여 공동 작업을 하는 다른 사용자들에게 신속히 전달하여서 오류 발생 인식을 공동으로 대처할 수 있도록 한다. 본 논문에서 제안한 오류 공유 시스템은 산업 안전 서비스를 위한 IPUSN 기반의 LAN 및 WAN 환경에서 응용 프로그램에서의 오류를 다수의 사용자가 공유하도록 지원한다. 특히 기존의 방법과는 달리 참여자의 수에 관계없이 일정한 전송률과 동일한 응답 시간을 보장함으로써 동시에 모든 참여자들이 같은 결과의 오류를 인식하게 되며 사용자의 수의 증가에 따른 영향을 적게 받는다.

• Proceedings of the Korean Information Science Society Conference
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• 2001.04a
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• pp.136-138
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• 2001

본 연구에서는 멀티미디어 공동작업 환경에서 응용 소프트웨어와 미디어 등의 프로세스(Process) 요소들에 대한 오류를 미리 감지하여 오류 공유 시스템을 이용하여 신속하고 정확하게 전달하여서 복구하는데 빠르게 대처할 수 있는 시스템을 제안한다. 감지 시에 훅킹(hooking) 방법을 이용한다. 감지된 오류는 오류 공유 시스템을 이용하여 공동 작업을 하는 다른 사용자들에게 신속히 전달하여서 오류 발생 인식을 공동으로 대처할 수 있도록 한다. 본 논문에서 제안한 오류 공유 시스템은 UDP 브로드 캐스팅 및 IP 멀티캐스팅을 지원하며 적은 부하로 LAN 및 WAN 환경에서 응용 프로그램에서의 오류를 다수의 사용자가 공유하도록 지원한다. 특히 기존의 TCP를 이용한 방법과는 달리 참여자의 수에 관계없이 일정한 전송률과 동일한 응답 시간을 보장함으로써 동시에 모든 참여자들이 같은 결과의 오류를 인식하게 되며 사용자의 수의 증가에 따른 영향을 적게 받는다.