• Korean Journal of Construction Engineering and Management
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• v.11 no.4
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• pp.22-31
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• 2010

Because the estimated cost at early stage has great influence on decisions of project owner, the importance of early cost estimation is increasing. However, it depends on experience and knowledge of the estimator mainly due to shortage of information. Those tendency developed into case-based reasoning(CBR) method which solves new problems by adapting previous solution to similar past problems. The performance of CBR model is affected by attribute weight, so that its accurate determination is necessary. Previous research utilizes mathematical method or subjective judgement of estimator. In order to improve the problem of previous research, this suggests CBR schematic cost estimation method using genetic algorithm to determine attribute weight. The cost model employs nearest neighbor retrieval for selecting past case. And it estimates the cost of new cases based on cost information of extracted cases. As the result of validation for 17 testing cases, 3.57% of error rate is calculated. This rate is superior to accuracy rate proposed by AACE and the method to determine attribute weight using multiple regression analysis and feature counting. The CBR cost estimation method improve the accuracy by introducing genetic algorithm for attribute weight. Moreover, this makes user understand the problem-solving process easier than other artificial intelligence method, and find solution within short time through case retrieval algorithm.

• Korean Journal of Social Welfare
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• v.66 no.1
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• pp.251-276
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• 2014

This study scrutinizes the common sense in the field of disability employment that the bigger the size of a firm, the lower the employment rate of people with disabilities. This common sense has been established by conventional cross-tabulation and multiple regression analyses without taking into account possible interactions between the sizes of firms and the industries in which they operate. This study shows that the distribution of the disability employment rate violates the linearity and homoscedasticity assumptions of the OLS. In an effort to find models that explain the data better, this study fits the OLS model, the weighted linear regression model, and the multinomial logit model as well as the path analysis which is meant to examine the relationships between firm size and other variables relevant to disability employment. The result shows that, when an interaction term between firm size and industry is added to the model, firm size does not have any significant effect on disability employment rate for those firms with 100 or more regular employees, to the contrary of the findings of prior studies. It also demonstrates that other factors such as job setting, the extent of helpfulness of disability employment employers perceive, employers' care for disability, and employers' awareness of disability policies may matter more than does firm size. This study proposes that future research and policy implementation for disability employment should pay no less attention to industry and other factors mentioned above than to firm size.

• Journal of Digital Convergence
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• v.11 no.3
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• pp.49-57
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• 2013

This study examined influence of strengths of family life and satisfaction with school life on adolescent psychological well-being, particularly targeting at high school students in the rapidly changing IT-based society. In order to investigate influence of factors related to home and school as the main living spaces on improving adolescent psychological well-being, a survey of 251 students at K academic high school in Busan was conducted and then multiple regression analysis was carried out. Firstly, the analysis showed that adolescents' sharing time at home could make a positive impact on their positive interpersonal relationships. It also showed that family bonds could have a positive impact on adolescents' positive interpersonal relationships, the goal of life, and personal growth, and thus satisfaction in communication at home was a factor that could be helpful to environmental control. Secondly, it indicated that adolescents' satisfaction with school life was a factor that had a positive impact on self-acceptance, environmental control, and the goal of life among the sub-factors of psychological well-being. It turned out that peer relationships could have a positive impact on positive interpersonal relationships, likewise school lessons and peer relationships could have a positive impact on autonomy. According to the results of analysis, factors related to strengths of family life and satisfaction with school life could affect adolescent psychological well-being. Therefore, these findings can be applied to establishing major youth policy.

• Journal of Digital Convergence
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• v.16 no.1
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• pp.165-175
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• 2018

This study was tried to investigate the convergence factors affecting the grit of nursing students who experienced clinical practice, focusing on recent interest in grit. The study subjects were 126 juniors and seniors in a nursing college, and the data were collected from June 1, 2017 to June 8, 2017. They were analyzed using the SPSS 23.0 statistical program(Independent t-test와 One Way ANOVA, Person's Correlation, Stepwise regression, hierarchical). The analyzed data showed that grit of the subjects was positively correlated with self-esteem (r=.160, p=.037) and self-efficacy (r=.232, p=.004) And self-efficacy (r=.541, p<.001). According to the results of the multiple regression analysis, only the self-efficacy significantly predicted grit (${\beta}=.232$, p=.009). As a result, this study provides a more comprehensive understanding of the variables related to Grit, and it can be especially valuable for the direction of what education should be helpful to nursing students in clinical practice.

• Journal of Digital Convergence
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• v.16 no.1
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• pp.409-420
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• 2018

This is a convergence study to investigate the factors affecting the psychological happiness of leisure sports participants(social baseball club) and to present a strategy for effective program development. The subjects of this study were 151 participants of social baseball clubs in J-do area and collected data by self-reported questionnaire. Data were analyzed by descriptive statistics, t-test, ANOVA, correlation analysis and stepwise multiple regression analysis. The results of this study were the explanatory power was 54.1% with psychological happiness, quality of life, self-efficacy. As a result, it was confirmed that strengthening interpersonal relationship ability, positive reinforcement of self-efficacy, and quality of life were important for improvement of psychological happiness. and in the future, it is necessary to study repeatedly to confirm the influence of psychological through objective measurement.

• The Journal of the Korea Contents Association
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• v.14 no.9
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• pp.582-588
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• 2014

The purpose of this study is to analyze how a joint research network between countries affects the diffusion of technology information and how much countries with high centrality on the network accept new technology and to seek their meaning. With this aim, the joint research network density between countries by year and the number of participating countries were measured using thesis information regarding the secondary battery field and the electric vehicle field, and a regression analysis of relevant variables was conducted. As a result of the analysis, the greater the joint research network density in the secondary battery field, the higher the number of participating countries in a linear relationship. Also, on the joint research network, countries with high degree centrality were discovered to have led development in the mid to large size secondary battery field. Meanwhile, for the electric vehicle field, although there appeared no increase in the network density value, the number of participating countries was found to have increased. This was analyzed that joint research between countries was not a necessary and sufficient condition although it played a crucial role in promoting technology diffusion. Such a result is meaningful in that it verified promoting factors for essential technology diffusion statistically; however, with this research, there exist limitations that the index of a central role on the network was measured only with degree centrality and that only the relationship between two players was measured for network density in interactions between players. Accordingly, it is necessary to carry out research into a method to measure interactions among multiple researchers in the future.

• Cartoon and Animation Studies
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• s.41
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• pp.169-185
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• 2015

This thesis will observe and study the acting pattern and subtext of Ahn, Sung-kee who is known to be "The Nation's Actor" in South Korea's movie industry and currently has been on the screen with multiple different characters in about 120 films. He started his career as a child actor in Kim, Ki-young's movie at the age of five. Ahn is exceptional at communicating through solely on screen in terms of delivering characters' characteristics to audience with variety of characters. We provided some of the acting patterns he has shown in different roles of characters that he played such as in comedic, mellow and extraordinary acting. Following will be analysis on subtext of Professor Kim, Kyung-ho the role Ahn played in Jung, Ji-young's movie in terms of what type of factors was prepared and how it has delivered in each important scene. Generally, acting's basic skills and talents are similar between theater and movie. However, in movies, understanding of shots and preparation is needed. To deliver this well, a depth study of those characteristics such as expression method of subtext and continuous practice is necessary. Based on researches, we will talk about how important screen actors need to understand and prepare those characteristics when they act their roles and express the subtext of each character.

• Korean Journal of Health Education and Promotion
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• v.20 no.2
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• pp.127-147
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• 2003

The purpose of this study was to investigate the factors influencing health promoting behavior and satisfaction of life in female undergraduate students, to provide the basic data for health promoting intervention in order to improve satisfaction of life. The subjects of this study were 345 female undergraduate students living in Jecheon city who were selected by convenience sampling. The data was collected through self-reported questionnaires from Oct. 2 to Dec. 20, 2001. Research instruments used in this study were the health promoting lifestyle profile developed by Walker et al(1987), satisfaction of life developed by Pavot and Diener(1993), perceived health status by Lawston et al(1982), self-esteem by Rosenberg(1965), self-efficacy by Becker et al(1993), health locus of control by Wallston et al(1978). The data was analyzed by using descriptive statistics, pearson correlation coefficient, stepwise multiple regression with SPSS/Win program. The results of this study were as follows； 1) The mean score of health promoting behavior was 2.31 point out of 4. Among the sub-levels of health promoting behavior, the order of importance was the following self-actualization(2.76), interpersonal support(2.75), stress management(2.31), nutrition(2.06), health responsibility(1.83), exercise(1.76). The mean score of satisfaction of life was 4.11 point out of 7. 2) The health promoting behavior showed significant positive correlation with perceived health status, self-esteem, self-efficacy, internal health locus of control, powerful others health locus of control. The satisfaction of life showed significant positive correlation with perceived health status, self-esteem, self-efficacy, internal health locus of control, health promoting behavior. 3) In the relationship between general characteristics and health promoting behavior, there was a significant difference in majors(F＝8.50, p＝.000). In the relationship between general characteristics and satisfaction of life were significant differences in a grades(F＝2.67, p＝.04) and economic status of parents(F＝8.59, p＝.000) 4) The most powerful predictor of health promoting behavior was self-efficacy. A combination of self-efficacy, self-esteem and powerful others health locus of control accounted for 34.7% of the variance in health promoting behavior. The most powerful predictor of satisfaction of life was self-esteem. A combination of self-esteem, health promoting behavior, perceived health status, economic status of parents and grade accounted for 34.0% of the variance in satisfaction of life. In conclusion, we need a health promotion program focusing on exercise, health responsibility and nursing strategies enhancing self-efficacy and self-esteem should be developed to promote a healthy lifestyle and satisfaction of life in female college students.

• Journal of Convergence for Information Technology
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• v.10 no.7
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• pp.67-74
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• 2020

This study was a correlational study between the violence experience and post-traumatic stress disorder, compassion fatigue, and job satisfaction of emergency room nurses. The researcher conducted this study on 114 randomized emergency room nurses from 9 emergency rooms located in Gyeonggi-do and collected data for approximately 4 weeks from July 1, 2019 to July 31, 2019. The mean values of verbal violence showed 11.50±3.37 points, physical threatening showed 11.57±4.15 points, and physical violence showed 11.07±5.20. In this study, the mean values of post-traumatic stress disorder was 34.59±14.46 points, compassion fatigue was 26.50±7.17, and job satisfaction was 61.19 ± 8.38 points. Multiple linear regression indicated that post-traumatic stress disorder (β=-.21, p=.009) respectively predicted job satisfaction(F=23.11, p<.001) Based on the study results above, it is considered that programs that can systematically manage and prevent post-traumatic stress disorder and compassion fatigue are required to reduce post-traumatic stress disorder, and compassion fatigue from violence experience of emergency room nurses. Moreover, safe work environments should be established to work efficiency.

• Journal of Digital Convergence
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• v.14 no.4
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• pp.173-183
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• 2016

The purpose of this study is to see how a CEO's ethics affects each company's business performance, as the ethical management of global companies are being one of the social issues at this time, particularly in construction companies. The survey was conducted amongst the engineers and managers who are currently engaged in domestic major companies as well as small businesses, and analyzed based on the frequency, reliability, factor, and multiple regression method. The results are as follows by use of SPSS 20 as a statistical analysis tool. CEO's ethics has a positive effect on financial performance, business ethics, organizational achievement, social achievement. The study found that the higher ethical sense a CEO has, which is one of the highest values of CEO, the higher ownership an employee has, and the more a CEO has a communication with the employees, the more credibility is mutually built, which will be a driving force of company's development. This study needs more wide study for on the effect of CEO's ethics on the business performance of general company in the future.