• Proceedings of the Korean Society of Computer Information Conference
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• 2011.06a
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• pp.119-121
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• 2011

본 논문에서는 한국사회에서 미래 100년 동안 사회 경제 분야의 가장 중요한 핵심 문제로 대두되어질 다문화가정과 관련하여 IT와 융합된 전자책 시스템을 기반으로 자녀교육에 대한 해결책을 제시하기 위하여 7개국의 유명한 전래동화책을 수집, 분석하고 번역하여 다국어 전자책으로 제작하고 서적, CD, 웹사이트, 스마트폰을 이용하여 세계 각국의 다문화가정 교육모델로 제시하고 서비스한다. 구현되어진 다국어 전자책 모델 시스템은 국내 다문화가정 어린이의 이중 언어 교육을 통하여 부모와 연계된 다문화 시대의 문화적 언어적 문제를 해결하며 다문화 어린이들의 글로벌 마인드 함양 및 다문화를 기반으로 한 사회적 통합을 추진하며 세계 최고수준의 유비쿼터스 인터넷 인프라 기반 서비스를 통하여 전자책 서비스의 글로벌 표준을 제시한다. 다국어 전자책 모델 시스템은 국가지원과제 신청을 통하여 지역사회를 통한 복지 분야 행정시스템을 기반으로 무료 보급하며 2011년 독일에서 개최되는 국제도서전에 출품하여 글로벌 보급 활성화와 교육성과에 대한 발표를 추진한다.

• International Journal of Computer Science & Network Security
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• v.21 no.7
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• pp.87-92
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• 2021

Analysis of current state of construction industry functioning in Ukraine allows us to identify a number of problems having negative impact on sustainable development of construction industry, especially in terms of its organization. Therefore, it is absolutely essential to study existing methods of organization system supplying construction sites with necessary material resources. Companies can develop their own logistics departments, which independently solve logistics issues related to transportation organization and management, accounting and inventory management, acquisition and warehousing, intercommunication (ability to obtain both final and intermediate information during transporting materials). Using a complex of methods is substantiated: the hierarchy analysis method (Saati's method), the network method, the defect elimination algorithm DEA, the transportation problem that finds optimal problem solutions for construction sector with the purpose of rational supplying uninterrupted construction with building resources in the designed model "provider-transportation-costs".

• ETRI Journal
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• v.45 no.3
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• pp.448-461
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• 2023

This article performs a detailed data scrutiny on a chronic kidney disease (CKD) dataset to select efficient instances and relevant features. Data relevancy is investigated using feature extraction, hybrid outlier detection, and handling of missing values. Data instances that do not influence the target are removed using data envelopment analysis to enable reduction of rows. Column reduction is achieved by ranking the attributes through feature selection methodologies, namely, extra-trees classifier, recursive feature elimination, chi-squared test, analysis of variance, and mutual information. These methodologies are ranked via Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) using weight optimization to identify the optimal features for model building from the CKD dataset to facilitate better prediction while diagnosing the severity of the disease. An efficient hybrid ensemble and novel similarity-based classifiers are built using the pruned dataset, and the results are thereafter compared with random forest, AdaBoost, naive Bayes, k-nearest neighbors, and support vector machines. The hybrid ensemble classifier yields a better prediction accuracy of 98.31% for the features selected by extra tree classifier (ETC), which is ranked as the best by TOPSIS.

• Journal of the Korea Society of Computer and Information
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• v.14 no.10
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• pp.199-206
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• 2009

The development of broadband multimedia content, a deaf sign language sign language is being used in education. Most of the content used in sign language training for Hangul word representation of sign language is sign language videos for the show. For the first time to learn sign language, sign language users are unfamiliar with the sign language characteristics difficult to understand, difficult to express the sign is displayed. In this paper, online, learning sign language to express the sign with reference to the attributes, Semantic Logic applying the sign language of multimedia content model for video-based platform is designed to study.

• The Journal of Asian Finance, Economics and Business
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• v.9 no.3
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• pp.355-364
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• 2022

The effect of technological innovation on the high-quality development of the producer services industry depends on whether or not technical innovation efficiency plays a key role. This study looks at the impact of technological innovation and financial technology (fintech) on the development of high-quality producer services in Fujian Province from 2010 to 2019. The efficiency of technological innovation is measured using Data Envelopment Analysis (DEA) and the Malmquist productivity index. The mean overall innovation efficiency score is 0.639, meaning that Fujian accounts for 36.1% of resource utilization inefficiencies and that there are significant differences in technological innovation efficiency between cities. The findings show that high-quality producer services industries benefited from innovation efficiency, but that the influence of technological innovation efficiency is insignificant. This demonstrates that financial innovation has not been able to completely enhance the development level of the producer services industry. This may be due to the unreasonable output structure of technological innovation and the low industrial transformation rate of technological achievements. This study advocates that the R&D fund allocation structure be optimized. That technological innovation can improve the high-quality development of the producer services industry is a consensus within the academic community.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2022.05a
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• pp.238-241
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• 2022

North Korea launched an ICBM and declared Moratorium for the September 19 military talks. The Armed Forces must protect military security for national defense and security. The Ministry of National Defense, which received a hacking attack from North Korea, must protect its military security even more. Recently, the leakage of military data through smartphones is occurring through smartphones. Officers and non-commissioned officers can use smartphones while working. Therefore, smartphone forensics is required to check information leakage of military data from smartphones. In this study, forensic leaks of military data from the Galaxy S20 model of S company. Research integrity verification for securing smartphone forensic evidence, securing metadata, and adopting evidence. This study will contribute to the development of military security and forensic technology.

• Proceedings of the Korean Society of Computer Information Conference
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• 2022.07a
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• pp.355-356
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• 2022

본 연구는 IT 비전공 대학생을 위한 코딩교과목 개발을 목표로 한다. 이를 위해 선행연구 및 이론탐색을 통해 대학교양 교과목으로서 코딩교육을 탐색하고, 적용 가능한 수업모형 및 교육내용을 선정하여 기초내용을 구성한 후 3인의 교육공학 전문가와 3인의 코딩교과목 개발 유경험 대학교수를 대상으로 FGI 인터뷰 방법을 통하여 연구결과를 도출한다. 대학교양 교과목으로서 코딩교육의 필요성이 대두되고 있음에도 불구하고 현재 운영 중인 코딩교과목은 프로그래밍이 중심으로 구성되어 비전공 대학생들에게는 환영받지 못하고 있다. 이에 본 연구에서는 코딩교과목의 방향을 컴퓨팅사고 및 SW 기초교육을 목표로 메타버스 등의 플랫폼을 활용한 체험중심 수업설계를 통해, 실행 가능한 수업모형을 개발하고 대상자 인터뷰와 분석을 통해 이를 위한 교수학습방법을 설정할 것이다. 본 연구를 통해 제시될 메타버스 플랫폼을 활용한 체험중심 코딩교육은 이후 고등교육기관의 교딩교육 교과목 개발을 위한 기초자료로 활용될 것이다

• Korean Journal of Ichthyology
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• v.35 no.4
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• pp.333-339
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• 2023

The aim of this study was to collect information regarding the sex ratio, size at sexual maturity, and the primary spawning period of Hexagrammos otakii. The sex ratio (female : male) was observed to be 1 : 1.2 (n =739 : 906, with females comprising 81.6% of the population). The gonadosomatic index (GSI) exhibited its highest values in November for females and October for males, coinciding with the primary spawning period from November to January. The total length required for 50% sexual maturity was determined through a logistic regression model and found to be 23.1 cm for females.

• The Journal of the Korea Contents Association
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• v.9 no.4
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• pp.323-330
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• 2009

This study measures the relative efficiency and productivity change of the Korean Life Insurance Firms using DEA model and Malmquist Index for 2004-2007. The main results of this study can by summarized as follows. First, in case of efficiency of CCR for 2004-2007, the number of efficient firms(CCR value is one) are six firms, five firms, four firms, seven firms respectively. Second, in case of efficiency of BCC for 2004-2007, the number of efficient firms(BCC value is one) are eight firms, nine firms, ten firms, twelve firms respectively. Third, In case of return to scale for 2004-2007, DRS are nine firms and IRS are two firms, DRS are five firms and IRS are five firms, DRS are five firms and IRS are four firms, DRS are five firms and IRS are two firms respectively, Fourth, Malmquist Index representing productivity change for 2004-2007 are 1.12 in 2004-2005, 0.97 in 2005-2006, 1.05 in 2006-2007.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.3
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• pp.677-683
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• 2009

This study measures the relative efficiency and productivity change of IT firms received policy fund using DEA model and Malmquist Index for 2006-2007. The main results of this study can by summarized as follows. First, in case of efficiency of CCR for 2006-2007, the number of efficient firms(CCR value is one) are six firms, six firms, respectively. Second, in case of efficiency of BCC for 2006-2007, the number of efficient firms(BCC value is one) are eleven firms, thirteen firms respectively. Third, In case of return to scale for 2006-2007, DRS are fifteen firms and fourteen firms respectively. IRS are two firms and one firm respectively. DRS firms can improve efficiency by the reduction of scale and IRS Firms can improve efficiency by the increase of scale. Fourth, Mean value of Malmquist Index representing productivity change for 2006-2007 are bigger than 1.00. This imply that productivity increase was achieved.