• Journal of the Korean BIBLIA Society for library and Information Science
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• v.25 no.3
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• pp.191-214
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• 2014

The goal of this study is an exploratory statistical analysis of the university and college library statistics in the Academic Information Statistics System(rinfo.kr) governed of Korean Education and Research Information Service(KERIS) with performance measures based on sustainability. For the goal, we adopt a preprocessing method to develop change-rate variables by considering preceding predictive elements and succeeding performance elements, and to control external factors, such as size and socioeconomic factors. Then we execute a series of factor analyses and multiple linear regression analyses. 13 factors are extracted by the factor analyses and some sets of significant variables affecting the performance measures are identified through the regression analyses. Based on the results, we discuss the problem of out-lier and low correlation between variables. A suggestion for developing new variables is also discussed based on low effect sizes of the developed regression models. We hope that this study contributes to diffuse discussions on statistics system, evaluation, and further library management based on sustainability.

• Proceedings of the Korean Statistical Society Conference
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• 2005.11a
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• pp.1-3
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• 2005

통계 소프트웨어 R은 여러 가지 특징을 가진 도구이다. S라는 전산언어를 기반으로 하고 이에 수학함수와 통계함수, 그리고 그래픽함수들이 결합되어 편리한 계산 작업 환경을 제공하고 있다. R이 기반으로 하고 있는 S언어에는 문법적, 의미론적 특징이 잘 어울려 있다. S언어의 주요 특징 중 하나는 객체지향성이다. 본 연구에서는 R의 특징인 객체지향성과 그 의미에 대하여 살펴보게 된다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.06a
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• pp.7-10
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• 2022

'21년 전국 20개 해상교통관제센터의 선박통항량, 교신량, 관제정보 제공 등 VTS 운영실적 분석 및 사고현황, 원인 분석을 통한 관제서비스 개선방안을 제시하고자 한다. 또한 해양사고 예방기능 강화를 위해 관제사 경험·직관에 의한 관제에서 빅데이터·인공지능(AI) 기반 첨단관제로의 전환, VTS 운영성과에 대한 공신력 확보 및 첨단관제 기술개발에 활용 등을 위한 VTS 통계관리체계 개산 방안에 대해서도 고찰해보았다.

• Proceedings of the Korean Statistical Society Conference
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• 2002.05a
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• pp.119-125
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• 2002

우리는 본 논문에서 디지털 영상에 대하여 Hash함수를 이용한 내용기반의 안전한 워터마킹 인증기술을 제시하려고 한다. 허가되지 않는 이미지의 내용변경을 막기 위해 안전한 워터마킹 시스템을 개발하기 위하여 비밀키를 가지고 있는 Hash 함수가 사용되었고, 각 블록의 워터마크신호는 Hash함수의 출력결과를 Seed로 사용하여 의사난수를 발생시킨 값에 따라 생성되어진다. 이미지 기술벡터들은 블록기반 에지 이미지로부터 측정되는데 이 값들은 해롭지 않는 조작 등에 대해서는 쉽게 변화하지 않지만 고의적인 내용변경 등의 조작에 대해서는 이들 값들이 바꾸어지는 성질을 갖고 있다. 워터마크신호의 삽입은 블록기반 스펙트럼 방법에 기초를 두고 있으며 워터마크신호의 크기는 인지성과 강인성이 조화를 이루도록 AC 부 밴드의 지그재그 스캔라인의 DCT 계수들의 지역적인 통계량에 따라 조정되어진다. 또한 저작권인증의 확인을 위한 경계 값의 선택은 통계학적으로 분석되어진다. 수치적인 실험의 결과는 제안된 기술이 강력한 저작권인증의 수행을 위해서 매우 효율적인 것을 보여주고 있다.

• Annual Conference on Human and Language Technology
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• 2023.10a
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• pp.563-567
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• 2023

본 연구는 한국 통계청이 수행하는 가계동향조사와 생활시간조사에서 자료처리 과정 및 방법을 혁신하려는 시도로, 기존의 통계 생산 방법론의 한계를 극복하고, 대규모 데이터의 효과적인 관리와 분석을 가능하게 하는 인공지능 기반의 통계 생산을 목표로 한다. 본 연구는 데이터 과학과 통계학의 교차점에서 진행되며, 인공지능 기술, 특히 자연어 처리와 딥러닝을 활용하여 비정형 텍스트 분류 방법의 성능을 검증하며, 인공지능 기반 통계분류 방법론의 확장성과 추가적인 조사 확대 적용의 가능성을 탐구한다. 이 연구의 결과는 통계 데이터의 품질 향상과 신뢰성 증가에 기여하며, 국민의 생활 패턴과 행동에 대한 더 깊고 정확한 이해를 제공한다.

• Journal of Korea Entertainment Industry Association
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• v.14 no.7
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• pp.447-456
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• 2020

The purpose of this study is to examine the effects of team efficacy and perceived loafing on learning outcome in team-based project learning. For this purpose, questionnaire survey was conducted to 58 students who enrolled the adolescent welfare class in 2019 at H University. A hierarchical regression analysis was conducted for the effects of team efficacy and perceived loafing on learning outcomes and the interaction effect between two variables. Main results of this study were as follows. Team efficacy had a positive effect on learning outcomes. Second, perceived loafing did not have a statistically significant effect on learning outcomes. Third, the interaction effect of perceived loafing and team efficacy on learning outcomes was significant. In particular, the negative effect of perceived loafing on learning outcomes was reduced by team efficacy. Based on the research results, a plan to increase the learning outcome of team-based project learning was discussed.

• The Journal of the Korea Contents Association
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• v.22 no.5
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• pp.367-382
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• 2022

This study examined the impact of smart factory's quality factors on the intention to accept Advance Smart Factory(ASF) by mediating Perceived Value(PV) and Smart Factor Performance(SFP) of domestic SMEs that had introduced smart factor. As a result, First, Information Quality(IQ) and Service Quality(SQ) had a significant positive impact on Perceived Value(PV). Second, System Quality(SysQ), IQ, and SQ had a significant positive impact on SFP. Third, PV had a significant positive impact on intention to ASF, and PV and SFP had a significant positive impact on the intention to accept ASP. Also, PV had a mediating effect between SysQ, IS and Perfromance, and PV and Performance had a moderation between SQ and ASF. These results could provide one implication to SMEs that are taking into account to improve their smart factor to be advanced.

• Journal of Digital Convergence
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• v.15 no.6
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• pp.29-38
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• 2017

The purpose of this study was to examine the effects of users' organization-public relationship of the donation activities of corporate via social network service on corporate image and reputation focused on social network service users. The subjects were 228 SNS users selected. The data were analyzed by the correlation analysis, reliability analysis and structural equation modeling analysis using SPSS 21 and AMOS 21 program. The results were as follow. First, Organization-public relationships influenced positively on corporate image. Second, Organization-public relationships influenced positively on corporate reputation. Third, Corporate image influenced positively on corporate reputation. These results will contribute to develop a marketing strategy via social network service of corporate.

• Journal of Technology Innovation
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• v.22 no.2
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• pp.77-104
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• 2014

Government R&D support for SMEs is very important and the R&D budget is also increasing. This study suggests a new method for analyzing a performance of R&D programs and analyzes the performance of R&D programs funded by small & medium business administration using the method. We discuss new measures "efficiency" that means short-term performance and "effectiveness" that means long-term performance. Weights based on the R&D programs' characteristics among the various sub-indicators of two measures were derived, and then the final scores were calculated by combining the weights with the responses on the indicators. Finally, this study tests the mean differences between R&D programs statistically. As a results, efficiency of R&D programs shows a significant difference between the R&D programs, while effectiveness does not. Most of the efficiency scores are low, whereas the effectiveness scores are high. The results explain that the R&D programs are managed inefficiently. However, most SMEs predict a positive impact of government R&D supports on effectiveness in the long term. Government needs to try to improve the efficiency of R&D supports because SMEs cannot expect sustainable performance with no improvement in efficiency.

• The Journal of the Korea Contents Association
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• v.18 no.4
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• pp.347-356
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• 2018

This study focuses the relationships of job performance abilities with learner satisfaction and learning performance for NCS-based courses in colleges from instructors' perspectives. The results of this study show that the satisfaction of learners for NCS-based courses is statistically higher when learners are evaluated 3 times or more rather than twice or less. And also it reports that when 3 or more different evaluation methods are applied per evaluation of job performance ability, learner satisfaction is statistically higher. On the other hand, the performance of learners is turned out to be better with both evaluations of 3 times or more, and 3 or more different evaluation methods per job performance ability. However those results are not statistically meaningful. It concludes that from a view of process-based formative evaluation, evaluating job performance ability itself should be considered as an activity for improving teaching and learning in higher vocational education of colleges.