• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.21 no.6
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• pp.211-224
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• 2022

In this study, factors affecting the efficacy of EV charging infrastructure improvement were investigated for EV users on Jeju Island. This study analyzed satisfaction with the EV charging infrastructure and demographic factors that affect the efficacy of EV charging infrastructure improvement. Factors found to affect the efficacy of EV charging infrastructure improvement include a sufficient number of charger installations, the speed in using EV chargers, the ease of obtaining additional information about charging, and fast customer service for faulty chargers. It was also confirmed that demographic factors such as user's housing types had a significant effect. This study contributes to verifying user satisfaction with the construction of EV charging infrastructure throughout Jeju Island.

• Proceedings of the Korean Information Science Society Conference
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• 2004.10a
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• pp.385-387
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• 2004

현재의 침입탐지 시스템의 문제점들을 개선하기 위해 침입탐지 정보의 축약기술 및 연관성 분석 기법들에 대한 연구들이 진행 중이다. 또한 최근에는 침입탐지 정보의 연관성 분석 시스템에 대한 효과성 검증에 대한 연구도 진행 중이다. 본 논문에서는 침입탐지 정보의 축약기술 및 연관성 분석 시스템의 효과성을 검증하기 위한 평가방안을 제안하였다 즉, 침입탐지 정보의 연관성 분석 시스템에 필요한 기능 요구사항을 제시하고, 그러한 기능을 객관적으로 평가할 수 있는 방법으로 가중치 및 행렬에 의한 방법을 제안하였다.

• The Journal of the Korea Contents Association
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• v.18 no.1
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• pp.551-560
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• 2018

The purpose of this study was to examine the effectiveness of drama program for early children by using method of meta-analysis. For the purpose of the study, master's theses, doctoral dissertations, and journal articles published in Korea up to April, 2017 were systematically reviewed. As a result, a total of 39 studies were eligible for the inclusion criteria. The mean effect sizes and test for homogeneity of effect size(Q-statistic) were analyzed by using Comprehensive Meta-Analysis software 2.0. The main findings of the study were as follows. First, the average effect sizes for drama program were ES=1.922 of verbal expression, ES=1.898 of emotional intelligence, ES=1.558 of creativity, ES= 1.292 of sociability. Second, by analysing the moderate variables of the effect size for drama program, 'age' of verbal expression, creativity and sociability, 'sessions' of verbal expression were statistically significant. Based on the study results, the research and practice implications were discussed.

• The Journal of the Korea Contents Association
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• v.14 no.1
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• pp.528-536
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• 2014

The purpose of this study was to examine the effectiveness of drama education program for elementary school students by using method of meta-analysis. For the purpose of the study, master's theses, doctoral dissertations, and journal articles published in Korea up to July, 2013 were systematically reviewed. As a result, a total of 19 studies were eligible for the inclusion criteria. The mean effect sizes and test for homogeneity of effect size(Q-statistic) were analyzed by using Comprehensive Meta-Analysis software 2.0. The main findings of the study were as follows. First, the average effect sizes for drama education program were ES=1.103 of self-expression, ES=1.011 of self-esteem, ES= .858 of creativity and ES= .672 of sociality. Second, by analysing the moderate variables of the effect size for drama education program, 'sessions' were statistically significant. Based on the study results, the research and practice implications were discussed.

• Journal of The Korean Association of Information Education
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• v.17 no.4
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• pp.507-513
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• 2013

The purpose of this paper is to compare the learning effectiveness of autonomous learning between on-line cyber learning using Internet media and off-line learning using printed media. In this study, each group is provided with the same learning contents and the same learning conditions. For autonomous learning the results revealed a significant difference between on-line cyber learning being not as effective as off-line learning. In order to improve the effectiveness of on-line cyber learning the negative aspects have been identified. These findings will help to improve the development of on-line learning effectiveness.

• The Journal of the Korea Contents Association
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• v.22 no.8
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• pp.140-148
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• 2022

This study focuses on the finding out the structural effect of consumers' cognitive age affecting consumer innovativeness due to the mediating effect of perceived easy of use of mobile and perceived usefulness of mobile. For this study, a self report survey is conducted through a structured questionnaire, and a parallel double-mediated effect analysis is performed using the process macro of SPSS for the analysis. In the study results, it is found that the cognitive age of consumers directly have a statistically significant negative effect on consumer innovativeness. In addition, in the analysis to verify the mediating effect of perceived easy of use of mobile and perceived usefulness of mobile, it is shown that perceived usefulness of mobile has a positive and significant effect on consumer innovativeness. Through this, The contribution of this study can be attributed to the fact that it analyzed the structural relationship between the perceived ease of use of mobile and the perceived usefulness of mobile in the process of consumers' cognitive age affecting consumer innovativeness.

• The Journal of the Korea Contents Association
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• v.15 no.11
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• pp.386-396
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• 2015

The purpose of this study is to analyze the determinants of the effectiveness in food safety policy, focusing on the perception of consumers. For this, we apply ordered logit analysis using "The Survey on the Attitudes towards Food Safety Policy" data investigated by Ministry of Culture, Sports and Tourism & Ministry of Food, and Drug Safety. According to the results of the analysis, policy literacy has a significant positive impact on the effectiveness of the policy. Trust has a positive impact on the effectiveness of the policy significantly. In addition, the results show that sensitivity has a significant negative impact on the effectiveness perceived by consumers. This study imply that the government should give more information about policies and make an effort to gain trust on food safety policy.

• Proceedings of the Korea Society for Industrial Systems Conference
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• 2008.10b
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• pp.595-597
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• 2008

교육 서비스의 수요 측면인 학습자의 니즈가 날로 높아감에 따라 e-learning의 발달과 함께 혼합화의 추세가 보편화되고 있다. 이에 본 연구에서는 유아 내지 K-12 교육 분야에서의 혼합형 학습의 효과성에 관한 실증적 연구를 통해 그 실효성을 입증해 보고자 한다. 이를 토대로 유아 내지 K-12 교육 분야에서의 혼합형 학습에서의 전략성의 시사점을 도출하고자 한다.

• (The) Korean Journal of Educational Psychology
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• v.32 no.3
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• pp.321-353
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• 2018

The purpose of this study was to investigate Korean undergraduate students' metacognitive awareness and preference of effective learning strategies. To achieve this goal, a scenario-based survey was conducted focusing on the metacognitive awareness, preference, and use of seven effective learning strategies (modality effect, static-media presentations, absence of extraneous details, testing, distributed learning, interleaved learning, generation) that were empirically supported. This study also aimed to explore the relationships between grade point average (GPA), metacognitive self-regulation, and the aforementioned variables to investigate which students know about, prefer, and use effective learning strategies. The majority of students were unknowledgeable about four of the seven strategies (modality effect, static-media presentations, absence of extraneous details, interleaved learning). Only half of the students were correctly aware of effectiveness of the two strategies (testing, generation). Moreover, students showed low preference for effective learning strategies. GPA did not show a significant correlation with metacognitive awareness and preference of effective learning strategies; however, it showed a significant positive correlation with the use of effective learning strategies. Only for a few learning strategies, metacognitive self-regulation showed a positive correlation with metacognitive awareness, preference, and/or their use. This study suggests that it is important to teach effective learning strategies to undergraduates with a specific direction of instruction. In addition, this study distinguishes metacognitive awareness from preference, suggesting that these two may reflect different constructs.

• The Bulletin of The Korean Astronomical Society
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• v.45 no.1
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• pp.52.3-52.3
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• 2020

천문학적 유체는 강하게 자화되어 있는 경우가 많은데, 이러한 강한 자기장을 얻는 한 방법이 난류에 의한 자기장의 증폭이다. 플라즈마 효과나 기타의 이유로 약한 씨앗 자기장이 유체에 생길 경우, 난류는 이 씨앗 자기장을 매우 효과적으로 증폭시킬 수가 있다. 이 과정을 난류 다이너모라 하는데, 난류 다이너모는 주로 비압축성 난류 구동력을 사용하여 연구해 오고 있다. 비압축성 구동력을 사용할 때의 난류 다이너모 과정은 비교적 잘 규명되어 있다. 기존의 연구 결과에 의하면, 자기장의 세기는 지수 함수적 성장을 거친 후 선형적 성장 단계를 겪는다. 이후, 자기장의 에너지 밀도가 난류의 에너지 밀도와 비슷해지면 자기장은 더 이상 성장하지 못하고 포화 상태에 접어든다. 결론적으로 난류는 자기장이 동력학적으로 중요한 수준까지 증폭을 시킬 수 있다. 압축성 난류 구동력을 사용한 난류 다이너모 연구도 일부 존재하는데, 기존의 연구 결과에 의하면 다이너모 효과가 비압축성 구동력의 경우보다 비효율적이다. 본 연구에서는 압축성 구동력을 사용하여 난류 다이너모를 체계적으로 연구하였다. 특히 압축성 구동력과 비압축성 구동력이 난류 다이너모 효과에 어떤 차이를 주는지 체계적으로 비교하였다.