• Journal of The Korean Association of Information Education
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• v.19 no.4
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• pp.399-408
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• 2015

The purpose of this study was to design and implement the smart system for supporting instructional materials employing characteristics of smart education and flipped learning and to examine the effects of the system on students' achievement and satisfaction in elementary education. The system was developed on the basis of the curriculum with the design strategies of the smart system. The results of the analyses showed that the achievement of the students was increased over the series of the tests. It was also found that the system positively influenced students' self-directed learning time and their satisfaction in social studies education. The implications of the results of the study and suggestions for the future study were discussed.

• Journal of Venture Innovation
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• v.2 no.1
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• pp.23-31
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• 2019

The primary goal of this study is to develop proper indicators for evaluating and selecting an organization that contributes product safety in his industry. The indicators of product safety include input, process, and output in the sequences of product safety activities and systems. The indicators are proposed by the side of measurable and unmeasurable index. In detail, the indicators are consist of 3 parts - product safe management, efforts for product safety and the performance of product safety. The indicators are itemized by size of enterprise (large, medium and small size) due to the difference of their system and management capability of product safety. To get the indicators reasonably, the opinions of experts and VOC of the industrial field are considered. And the indicators are also divided by job position and level(an executive vs. worker). The items of indicators are 20 and the score is 200, that are the same whichever the case may be. The indicators are useful tools for selecting a person who serves the development of product safety in his industry.

• Journal of the Korea Convergence Society
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• v.8 no.3
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• pp.151-161
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• 2017

This methodological study was conducted to test a Professional Moral Courage Scale(PMCS) translated in Korean for 196 nursing students in Changwon, Korea. Data were collected from January 13 to February 20, 2017. An internal consistency reliability and construct validity using exploratory and confirmatory factor analysis were conducted. These items were categorized into 4 factors explained 62.20% of the total variance. 4 factor model was validated by CFA(${\chi}2/df=1.89$, p<.001, RMR=.055, GFI=.93, AGFI=.89, CFI=.92, RMSEA=.067). The Cronbach's ${\alpha}$ was .79 and the reliability of subscales ranged from .44 to .80. The results show that this scale can provide scientific and empirical data when evaluating the PMCS of further clinical nurses, it is meaningful in the sense that it is the first attempt to measure the moral courage needed to provide a good nursing.

• Journal of the Korea Convergence Society
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• v.9 no.2
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• pp.85-90
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• 2018

The purpose of this study is to analyze the effect of flipped learning strategy, which is an online offline convergence learning strategy becoming a hot issue, on students' learning styles..Ultimately, the goal is to analyze the academic achievements and learning attitudes by applying the flipped learning strategy considering the preferred learning styles of Korean students. By assuming that Korean students are accustomed to traditional lecture class, it is assumed that the students would have difficulty in applying the flipped learning strategy which involves information gathering and problem solving through discussion. In order to analyze whether the application of flipped learning strategy is effective, it is necessary to identify students' preferred learning style and to develop appropriate teaching strategies accordingly.

• KDI Journal of Economic Policy
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• v.14 no.2
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• pp.77-108
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• 1992

Many economists and policymakers regard the ratio of R&D investment to GNP to be a good indicator of a nation's technological capabilities. Consequently, their major policy recommendation to promote technological development is a rapid expansion in R&D investment. However, a low R&D ratio does not necessarily mean less efforts at technological advancement since the composition of technologies to be developed varies depending upon the stage of economic development. Technology policy to improve the international competitiveness of domestic industries should be based on the stage of economic development and present technological status rather than on a simple comparison with advanced countries. At Korea's stage of development, maximizing the efficiency of R&D investment is more important than enlarging the size of the investment. Strategic alliances between domestic firms and foreign enterprises should be encouraged to save time and costs involved in acquiring new technologies and learning how to use them. The government should establish institutional devices to stimulate private enterprises to internationalize their business activities such as R&D, production, and marketing. The government should also promote the development of domestic and international R&D networks, which can serve as the infrastructure for technological innovations.

• Journal of the Korean Data and Information Science Society
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• v.26 no.6
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• pp.1283-1293
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• 2015

Recently many higher education institutes in Korea try to improve the education excellence, because there are some criticisms on the readiness of graduates for the needs of companies. We study the relationship between the satisfaction of college life and their academic achievements for freshmen during last 5 years at a certain university (so-called H University). In this paper, we study some requirements for freshmen to meet their needs to upgrade their capability throughout both curricular and extra-curricula activity and also study to improve their satisfaction of college life. We also propose some curricular and extra-curricula activity for freshmen to meet the their needs for the excellent academic achievement and to have satisfactory college life.

• Journal of the Korean Data and Information Science Society
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• v.24 no.1
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• pp.135-150
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• 2013

This study proposes a novel option strategy by using characteristic of volatility reversion and rough set algorithm in options market. Until now, various research has been conducted on stock and future markets, but minimal research has been done in options market. Particularly, research on the option trading strategy using high frequency data is limited. This study consists of two purposes. The first is to enjoy a profit using volatility reversion model when volatility gap is occurred. The second is to pursue a more stable profit by filtering inaccurate entry point through rough set algorithm. Since options market is affected by various elements like underlying assets, volatility and interest rate, the point of this study is to hedge elements except volatility and enjoy the profit following the volatility gap.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.26 no.4
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• pp.414-423
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• 2015

Array error analysis and correction of active array antenna are described in this paper. Array elements composed of radiator and TR(Transmit & Recive) module have error(magnitude and phase difference among array elements) which affects SLL(Side Lobe Level). Error affectedness level depends on ideal SLL according to antenna aperture weighting, number of array elements and antenna effective aperture. To satisfy required SLL, correction of array elements is necessary; adopted differently per errors, and weighted differently per shapes of antenna and required SLL. Errors of every individual element had been defined, performance of the antenna with or without error correction had been estimated and proved through near field test.

• Journal of The Korean Association For Science Education
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• v.31 no.1
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• pp.61-77
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• 2011

This study investigates science teachers' perceptions of science practices for science assessment. Science practices have information about students' ability to understand scientific knowledge and to perform scientific inquiry. For this study, seven science teachers, who have served for more than five years in secondary schools in Seoul, were chosen. A structured questionnaire consisting of twenty-seven items were used in National Assessment of Educational Achievement. And then, in-depth interviews followed. Co-workers analyzed and discussed the questionnaire and interviews. As results show, science teachers tend to determine science practices based on materials and way to present materials included in questions. Science teachers tend to recognize science practice as different, depending on information and thinking process, which is expected in solving them. In addition, they have a variety of the level of definition and understanding about science practices.

• Culinary science and hospitality research
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• v.20 no.3
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• pp.186-200
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• 2014

This study investigates the effect of foodservice employees' mentoring part on expressing emotions and self-esteem by conducting a survey. The data collected from the survey were analysed by SPSS18.0 and AMOS for frequency analysis, exploratory analysis, confirmatory factor analysis, correlation analysis and structure equation modeling. The results are as follows. First, the mentoring part was a significant constituent for achieving an organization's objective because a mentor and a mentee could interact and sympathize through personal recommendation, consultation and support for reducing psychological stress. Second, the mentoring part had a positive effect on organizational ability to adapt. Third, organizational conflicts influenced self-esteem. As the results indicated, the foodservice industry should manage an effective mentoring system for high quality services and the attainment of an organizational goal.