• Journal of Information Science Theory and Practice
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• v.11 no.2
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• pp.67-81
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• 2023

This paper presents a dynamic development of an ontology-based statistical information system supporting the collection, storage, processing, analysis, and the presentation of statistical knowledge at the national scale. To accomplish this, we propose a data mining technique to dynamically collect data relating to citizens from publicly available data sources; the collected data will then be structured, classified, categorized, and integrated into an ontology. Moreover, an intelligent platform is proposed in order to generate quantitative and qualitative statistical information based on the knowledge stored in the ontology. The main aims of our proposed system are to digitize administrative tasks and to provide reliable statistical information to governmental, economic, and social actors. The authorities will use the ontology-based statistical information system for strategic decision-making as it easily collects, produces, analyzes, and provides both quantitative and qualitative knowledge that will help to improve the administration and management of national political, social, and economic life.

• The Journal of the Convergence on Culture Technology
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• v.8 no.3
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• pp.441-447
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• 2022

Despite many discussions on the metaverse, there has been little concrete evidence and predictions about how firms use the metaverse, what determines firm competitiveness, and who will lead the industry. This paper attempts to answer these questions by conducting and examining a custom-designed survey of employees serving in the metaverse business. The survey results indicate that firms do not have strategic models for metaverse business yet, but they will become more affordable and widely used in the next three to five years. It is expected that many firms would coexist in the contents area, while the influence of global companies and large domestic companies with market dominance will be significant in the platform and software area.

• Educational Technology International
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• v.18 no.2
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• pp.193-213
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• 2017

This study aimed to explore online learning profiles of in-service teachers in South Korea, focusing on video lecture and discussion activities. A total of 269 teachers took an online professional development course for 14 days, using an online learning platform from which web log data were collected. The data showed the frequency of participation and the initial participation time, which was closely related to procrastinating behaviors. A cluster analysis revealed three online learning profiles of in-service teachers: procrastinating (n=42), passive interaction (n=136), and active learning (n=91) clusters. The active learning cluster showed high-level participation in both video lecture and discussion activities from the beginning of the online course, whereas the procrastinating cluster was seldom engaged in learning activities for the first half of the learning period. The passive interaction cluster was actively engaged in watching video lectures from the beginning of the online course but passively participated in discussion activities. As a result, the active learning cluster outperformed the passive interaction cluster in learning achievements. The findings were discussed in regard to how to improve online learning environments through considering online learning profiles of in-service teachers.

• Proceedings of the Korea Water Resources Association Conference
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• 2020.06a
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• pp.342-342
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• 2020

최근 소형 무인비행장치(UAV; unmaned aerial vehicle)인 드론을 이용한 신산업 육성 및 지원에 관한 관심도가 높아지고 있다. 국외에서는 이미 드론을 이용한 농업관리와 물류배송, 공공부문 모니터링 등 다양한 산업 분야의 드론 이용을 적극 장려하고 있다. 드론 이용에 관한 관심도가 높아짐에 따라 국내외적으로 드론 응용 관련 기술 개발과 연구가 활발하게 진행되고 있지만, 국내에서는 환경모니터링과 시설물 점검 등 일부 제한적으로 활용되고 있다. 국내에서는 2024년까지 드론 응용서비스로 확장되는 산업 변화에 대응, DNA(Data, Network, AI) 기술을 접목한 새로운 개방형 플랫폼 구축을 목표로 기술개발 및 산업 육성을 촉진하고 있다. 이러한 국내 기술 개발 방향에 맞추어 드론과 첨단기술을 이용한 하천조사와 관련해 드론을 연계한 하천관리 플랫폼 개발의 필요성이 높아지고 있다. 본 연구에서는 드론 기반 하천조사 및 모니터링 수행을 위한 하천관리 운영플랫폼 개발을 목표로 국내외 요소기술을 분석하고 기술수준을 조사했다. 특히, 드론 기반 하천관리에 필요한 임무를 영역별로 분리해 요소기술 기반의 플랫폼 서비스를 정의하고 하천관리 부문 개방형 플랫폼 구축을 위한 시스템 구성 및 운영에 필요한 요소기술을 선정했다. 최종적으로 선정된 플랫폼 서비스와 요소기술을 기초로 시스템 적용방안을 검토하고 하천관리 운영플랫폼 구축을 위한 시스템 아키텍처를 정의 및 설계했다.

• Genomics & Informatics
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• v.21 no.2
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• pp.24.1-24.7
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• 2023

Assays of clinical diagnosis and species identification using molecular markers are performed according to a quantitative method in consideration of sensitivity, cost, speed, convenience, and specificity. However, typical polymerase chain reaction (PCR) assay is difficult to quantify and have various limitations. In addition, to perform quantitative analysis with the quantitative real-time PCR (qRT-PCR) equipment, a standard curve or normalization using reference genes is essential. Within the last a decade, previous studies have reported that the digital PCR (dPCR) assay, a third-generation PCR, can be applied in various fields by overcoming the shortcomings of typical PCR and qRT-PCR assays. We selected Stilla Naica System (Stilla Technologies), Droplet Digital PCR Technology (Bio-Rad), and Lab on an Array Digital Real-Time PCR analyzer system (OPTOLANE) for comparative analysis among the various droplet digital PCR platforms currently in use commercially. Our previous study discovered a molecular marker that can distinguish Hanwoo species (Korean native cattle) using Hanwoo-specific genomic structural variation. Here, we report the pros and cons of the operation of each dPCR platform from various perspectives using this species identification marker. In conclusion, we hope that this study will help researchers to select suitable dPCR platforms according to their purpose and resources.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2020.07a
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• pp.28-29
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• 2020

최근 들어 정부의 적극적인 지원책에 힘입어 전통적인 축산농장의 환경을 스마트 축사로 개선하는 사업이 다양하게 추진되고 있다. 이에 축산농장의 스마트화를 위해 다양한 축산용 ICT 기기들이 개발되어 도입되고 있고, 클라우드기반의 인터넷환경까지 연결되고 있으나, 이러한 ICT 기기들을 사용하여 스마트 축사를 구축하고 운영하는데, 편의성 측면에서나 효율성 측면에서 어려움을 겪는 경우가 다수 발생하고 있다. 이 문제를 해결하기 위해, 축산 현장에서 사용자의 편의성 측면을 고려하여 축산현장 정보를 기록하는 스마트 블랙박스 시스템을 개발하고, 효율성을 고려하여 이 시스템을 위한 지능형 시스템 관제 플랫폼을 개발하였다. 그리고 현장상황에서 실증평가를 통해 축산 인들이 현장에서 축산 ICT 기기를 쉽고, 안전하게 운영하도록 하도록 사용자 환경을 구축하였다. 본 논문에서는 개발된 스마트 축산 ICT 블랙박스 시스템(Smart.Dx)과 IoT센서 수집용 게이트웨이(Smart.Dn), 그리고 클라우드 데이터 분석 솔루션(Smart.Center)을 기술한다. 이 연구내용은 또한 축산업에 종사하는 고령자나 스마트폰 환경에 익숙하지 않은 사용자 환경 특성을 고려하여, 유니버셜 디자인의 7대 원칙을 지원하고 있다.

• Journal of Distribution Science
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• v.21 no.8
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• pp.83-96
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• 2023

Purpose: This study examined the relationship between the factors (Credibility, Usability) and user Innovativeness of the ChatGPT on TRA (Theory of Reasoned Action; Subjective Norm, Attitude) and Switching Intention. TRA and Innovation Diffusion Theory (IDT) were used. Research design, data and methodology: From April 26 to 27, 2023, an online panel survey agency was commissioned to conduct a survey of GhatGPT users in their 20s and 40s in Korea, and a total of 210 people were used for the final analysis. Verification of the research model was performed using SPSS and AMOS. Results: First, ChatGPT factors (Credibility, Usability) were found to have positive effects on TRA (Subjective Norm, Attitude). Second, ChatGPT user Innovativeness was found to have a positive effect on TRA (Subjective Norm, Attitude). Third, ChatGPT users' TRA (Subjective Norm, Attitude) were found to have positive effects on Switching Intention. Conclusions: These results mean that the superior Usability and Credibility of ChatGPT and the Innovativeness of users have a significant effect on the Switching Intention from existing Portal Service (Naver, Google, Daum, etc.) to ChatGPT. Generative AI such as ChatGPT should strive to develop various services such as improving the convenience of functions so that innovative users can use them easily and conveniently in order to provide services that meet expectations.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2022.10a
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• pp.321-322
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• 2022

Recently, in the field of health care, health management topics are being dealt with a lot. In particular, services are concentrated in the field of exercise, and many exercise equipment fused with the 4th industry-based technology are also appearing. In general, a form of collecting user's exercise information by mounting various sensors on exercise equipment and linking services based on this is representative. In this paper, we propose an efficient data transmission based on the design in the process of transmitting the exercise data generated by the equipment to the smartphone through the Bluetooth-based IoT sensor and transmitting it back to the exercise information analysis platform.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2021.11a
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• pp.23-24
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• 2021

Among the failure cases of the existing navigation aids, the SW and operating system errors of the RTU, the embedded computer for navigation aids, account for about 10%. The causes of SW errors have an infinite number of cases, and it is impossible to correct them all. In this paper, we proposed a paravirtualized multi-OS Docker container utilization technique as a stable operation technique for smart navigational aids, which have recently increased the amount of computation and complexity of SW services that need to be managed. It is proposed to divide containers according to service type, expected load, and error frequency and load the service.

• Journal of Ocean Engineering and Technology
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• v.37 no.5
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• pp.190-197
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• 2023

In the shipbuilding and marine industry, digital transformation activities are promoted primarily by large shipyards. However, bottlenecks are observed across value chains, and digital transformation effects are reducing because of the cost and technical challenges encountered by supplies. In this study, we proposed a win-win cooperation model for large, small, and medium-sized companies using digital transformation based on the characteristics of the shipbuilding and marine industry through case studies. We investigated the digital transformation progress in German and Korean small and medium-sized enterprises (SMEs). In addition, we identified information-sharing methods and management challenges encountered in enterprise resource planning and manufacturing execution systems in the collaboration process of pipes, panels, blocks, etc. of SMEs that are suppliers of a Korean shipyard, and clarified communication by building a platform based on a common format between shipyards and suppliers. Further, we proposed a standard model of a digital transformation system for enhancing the collaboration between large companies and suppliers and proposed a basic plan including strategies to efficiently and effectively build a digital transformation system based on the standard model.