• The Journal of the Korea Contents Association
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• v.17 no.12
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• pp.545-557
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• 2017

In this study, as Korea's new government began, the voice of the so-called "real country" has increased, and what has been said about the "good country" and "good government". Therefore, based on the statements and researches on 'good country' and 'good government' that we talk about in our daily life, we collected associative statements about 'good country'. As a result of analysis, we classified the 'good countries' into 5 types as follows. is named "Trusted State Type" and is named "Workable State Type". is called "national type for children," is named "happy national type," and is named "living type." According to the results of the analysis, there is no significant difference in recognition of good countries according to age and occupation. In the twenty-first century, the Republic of Korea is forced to rethink its understanding of our "state" and the reason for its existence as a new government is introduced in a period of turbulence called regime change. This study intends to give meaning to the meaning of existence of 'Government' and opportunity to recall the desire and expectation of 'Good Government'

• The Journal of the Korea Contents Association
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• v.15 no.9
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• pp.317-328
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• 2015

The purpose of this study is to measure the validity and reliability of the Korean version of the self-efficacy for restorative care activity (K-SERCA) scale and the outcome expectations for restorative care activity (K-OERCA) scale. Psychometric testing was given to 187 nurses who have worked in 69 long-term care facilities in South Korea via post service and personal visit. Data were collected via structured-questionnaire and analyzed using SPSS/WIN 21.0 and AMOS 22.0. Content, construct validity using confirmatory factor analysis (CFA), criterion validity and internal consistency reliability were conducted. The K-SERCA scale had factor loading of the 10 items ranged from .74 to .87, and was validated by confirmatory factor analysis (CFI=.96, NFI=.94, RMSEA=.10). The K-SERCA scale was also a significantly positive correlation with 'Job satisfaction' (r=.32, p<.001). There was a reliable internal consistency with a Cronbach's ${\alpha}=.94$. The K-OERCA scale had factor loading of the 9 items ranging from .38 to .95, and was validated by confirmatory factor analysis (CFI=.98, NFI=.96, RMSEA=.09). The K-OERCA scale was also a positive correlation with 'Knowledge (r=.26, p<.001)', and 'Job satisfaction (r=.30, p<.001)'. There was a reliable internal consistency with a Cronbach's ${\alpha}=.89$. The results demonstrate that the K-SERCA and K-OERCA scales had satisfactory validity and reliability to measure self-efficacy and outcome expectations for restorative care activities among nurses who have worked in long-term care facilities in South Korea.

• Journal of Korean Society of Forest Science
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• v.95 no.4
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• pp.415-422
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• 2006

This study aims for suggesting an idea to plan the expansion of consuming environmentally friendly chestnuts by statistically analyzing the types and intentions for consumer's purchase of environmentally friendly point of production and export side. For this, the survey was performed on 650 housewives living in Seoul, new metropolitan cities such as Ilsan, Bundang, where is the central place of main consumption. As a result, it is more effective to plan the expansion of consumption as the activity of consumption promotion for environmentally friendly chestnut focused on specific target such as 3~4 members of family and 30~40's age of young housewives having with the academic background of above university graduate, large income of average monthly payment with over 4.5 million won and consumers who have experience to purchase environmentally friendly forest products. In order to achieve this goal, it is require to secure the stabilized dealer for the environmentally friendly forest products as well as to establish the appropriate price reflected by the value and quality of environmentally friendly chestnut which the consumers recognize. It is estimated that this price can be decided on the basis of willingness to pay for the environmentally friendly chestnut from the index which comes from the integrated and concentrated consumers' expectation as this study surveyed.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.37 no.3
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• pp.275-282
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• 2009

Generally, the sinusoidal cavity dither is adopted to ring laser gyroscope for eliminating the lock-in which is non-linear effect at the small rotation input. Despite this method, there are some remained errors which are generated at the dither turnaround, and those errors produce random walk which is a general character of a ring laser gyroscope. As one of the numerous research results for compensating these errors, there is a special lock-in compensation method which is the method of error estimation and compensation by comparing the beat signal periods of before and after the dither turnarounds. In this paper, by ring laser gyroscope modeling and numerical analysis, we verified the theoretical validity and confirmed the effectiveness of this method in expectation of the possible beat signal measurement time resolution. As a result, we confirmed the random walk decreases from a-half to a-third by this lock-in compensation method. So, it is expected to be a remarkable method for reducing the INS alignment time.

• The Journal of the Korea Contents Association
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• v.21 no.10
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• pp.48-58
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• 2021

For securing technology and business competences of companies that is the engine of domestic industrial growth, government-supported policy programs for the creation of commercialization results in various forms such as 『Technology Transaction Market Vitalization』 and 『Technology Finance-based R&D Commercialization Support』 have been carried out since 2014. So far, various studies on technology valuation theories and evaluation variables have been formalized by experts from various fields, and have been utilized in the field of technology commercialization. However, Their practicality has been questioned due to the existing constraint that valuation results are assessed lower than the expectation in the evaluation sector. Even considering that the evaluation results may differ depending on factors such as the corporate situation and investment environment, it is necessary to establish a reference infrastructure to secure the objectivity and reliability of the technology valuation results. In this study, we investigate the evaluation infrastructure built by each institution and examine whether the latest artificial neural networks and deep learning technologies are applicable for performing predictive simulation of technology values based on principal variables, and predicting sales estimates and qualitative evaluation scores in order to embed onto the technology valuation system.

• Journal of Digital Convergence
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• v.19 no.7
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• pp.11-19
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• 2021

The purpose of the study is to explore a plan for effective education using virtual reality in English education. In order to achieve the purpose of the study, the perception of English education using virtual reality was comprehensively investigated and analyzed for teachers(n=20) in the field of English education. The results of the study reveal the followings: 1) Teachers are positively aware of the necessity of English education using virtual reality, but most teachers complained of a psychological burden on education using virtual reality; 2) negative responses were somewhat higher than positive responses to the expectation that virtual reality-based English content would be practical in the educational field; 3) In order to increase the effectiveness of English education using virtual reality, it is necessary to share experiences for educational experience of virtual reality and need to provide various virtual reality contents; and 4) For virtual reality educational application, there is a high demand for teaching and learning method education and training using virtual reality and provision of guidelines for education using virtual reality.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.26 no.10
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• pp.1423-1431
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• 2022

Volatility is one of the variables that the Black-Scholes model requires for option pricing. It is an unknown variable at the present time, however, since the option price can be observed in the market, implied volatility can be derived from the price of an option at any given point in time and can represent the market's expectation of future volatility. Although volatility in the Black-Scholes model is constant, when calculating implied volatility, it is common to observe a volatility smile which shows that the implied volatility is different depending on the strike prices. We implement supervised learning to target implied volatility by adding V-KOSPI to ease volatility smile. We examine the estimation performance of KOSPI200 index options' implied volatility using various Machine Learning algorithms such as Linear Regression, Tree, Support Vector Machine, KNN and Deep Neural Network. The training accuracy was the highest(99.9%) in Decision Tree model and test accuracy was the highest(96.9%) in Random Forest model.

• Korean Journal of Culture and Social Issue
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• v.18 no.2
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• pp.235-260
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• 2012

This study was aimed at looking into and understanding child-rearing experience of mothers from multicultural families based on the grounded theory, one of the qualitative research methods. For this, twelve mothers from multicultural families were selected and data were collected through in-depth interviews with them and then analyzed through the open coding, axial coding and selective coding. The analysis suggested that main phenomena mothers from multicultural families experienced are the conflict of child-rearing and educational crisis, and the confused identity of parenting. These main phenomena had much to do with contextual factors such as economic hardship, lower level of the Korean language, cultural differences, prejudices and ignorance. The severeness of conflict and crisis of child-rearing and the intensity of identity confusion for parenting depended on arbitral conditions such as family bonds, positive expectation for the future of their children, and the help of supportive systems. Mothers were dealing with difficulties of child-rearing through action and interaction of resignation and denial, introspection and the intention to overcome difficulties, and the capacity building. As a result, mothers from multicultural families acknowledged that there is a limit to their position and roles they can play and tried to change in order to resolve problems related to their children, positioning themselves for more active lives in Korean society. Through discussion based on the findings of the study, this study can help better understand child-rearing experience of mothers from multicultural families and suggest several directions for future researches on multicultural families.

• Journal of Nutrition and Health
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• v.57 no.1
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• pp.120-135
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• 2024

Purpose: This study examined the factors affecting sugar intake in adults based on social cognitive theory. Methods: An online survey regarding the intake frequency of sugar-source food, factors related to sugar intake based on social cognitive theory, perceptions of sugar intake, and health-related factors was conducted in October 2019 with 1,022 adults (502 men and 520 women) aged 19-49 years. The intake frequency of sugar-source food was divided into tertiles using percentiles based on the daily frequency. Results: The daily intake frequency of sugar-source foods was 4 times, with beverages (1.87 times/day) and sweetened coffee (0.81 times/day) being the highest among the food groups and types, respectively. The group with a high intake frequency of sugar-source food had a high negative outcome expectation for reducing sugar intake, and was in a home and social environment with easy access to sweet food. Women in this group showed low self-efficacy and poor behavioral capability in reducing sugar intake. Self-control had the lowest average score among the factors of social cognitive theory (2.56/5 points), followed by nutrition knowledge related to sugar (5.42/10 points). As a result of regression analysis, the social cognitive factor affecting the intake frequency of sugar-sourced foods was found to be home environment for both men and women. On the other hand, factors contributing to reducing sugar intake were positive outcome expectations for men and behavioral skills for women. Conclusion: Dietary education and nutritional interventions for adults, including changes in the home environment with easy access to sweet foods, can reduce sugar intake and raise positive expectations for reduced sugar intake.

• Journal of Satellite, Information and Communications
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• v.12 no.3
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• pp.41-49
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• 2017

This paper will describe lunar lava tubes' five analyzed fields, such as geology, geomorphology, internal configuration, stability, communication and habitats requirements. This research gets through qualitative and qualitative data analysis as following results. A huge size and configuration differences between lunar lava tubes and earth one on geology and landform environments. Exo-genetics activities, such as meteorites, radiation, and sudden temperature bigger affect than Endo-genetic activities, such as effusion and earthquake of the lunar lava tubes. Landform and internal configuration of the lunar lava tubes due to the huge cave perilous landform that gravity difference have a technical limitation from internal approach and data obtain of the huge skylights and sinuous rilles. Stability of the lunar lava tubes deals with geology and landform. It was obvious geo-structural stability elements results generated on low rate of collapsed halls(skylights), low gravity, and relatively thick covers. In terms of the communication capability on the external and internal lunar lava tubes cordless communication techniques will overcome limitations of the sun-power generates supporting communication systems. Through this research it realized obvious differs between potential habitats possibility by accumulative theories by scholars and techniques of the lunar lava tubes. Especially, it is a favorable expectation throughout overcoming attempt on zero gravity, cosmo radiation, lunar dust of the exo-genetic limitations to the steep escarpment of skylights to approach and achieve techniques by the civil engineering, networking and GIS techniques as the endo-genetic environment treatment.