• Journal of the Korean Geophysical Society
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• v.7 no.2
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• pp.121-134
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• 2004

This study has tried to develop the modified DRASTIC Model by supplying the parameters, such as structural lineament density and land-use, into conventional DRASTIC model, and to predict the potential of groundwater contamination using GIS in Hwanam 2 District, Gyeonggi Province, Korea. Since the aquifers in Korea is generally through the joints of rock-mass in hydrogeological environment, lineament density affects to the behavior of groundwater and contaminated plumes directly, and land-use reflect the effect of point or non-point source of contamination indirectly. For the statistical analysis, lattice-layers of each parameter were generated, and then level of confidence was assessed by analyzing each correlation coefficient. Groundwater contamination potential map was achieved as a final result by comparing modified DRASTIC potential and the amount of pollutant load logically. The result suggest the predictability of contamination potential in a specified area in the respects of hydrogeological aspect and water quality.

• Journal of Medicine and Life Science
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• v.15 no.2
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• pp.84-88
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• 2018

The aim was to evaluate different results from using crude incidence rate (CIR) instead of agestandardized incidence rate (AIR) when comparing groups having different age structures. After selecting a report using CIRs, AIRs and their 95% confidence intervals(CI) was calculated from the raw data. The statistically significant difference between CIR and AIR was decided based on AIR's 95% CI. Comparing with CIRs, AIRs were under-estimated. In addition, there were no statistical significance of annual trends(P=0.59). These findings are an additional evidence using AIR when comparing level of occurring infectious diseases on groups with different age structures.

• Journal of Information Processing Systems
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• v.15 no.1
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• pp.34-46
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• 2019

A method for detecting foreign substances in mould based on scatter grams was presented to protect moulds automatically during moulding production. This paper proposes a wavelet transform foreign detection method based on Monte Carlo analysis mechanism to identify foreign objects in the tube. We use the Monte Carlo method to evaluate the image, and obtain the width of the confidence interval by the deviation statistical gray histogram to divide the image type. In order to stabilize the performance of the algorithm, the high-frequency image and the low-frequency image are respectively drawn. By analyzing the position distribution of the pixel gray in the two images, the suspected foreign object region is obtained. The experiments demonstrate the effectiveness of our approach by evaluating the labeled data.

• Journal of Technologic Dentistry
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• v.44 no.3
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• pp.97-103
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• 2022

Purpose: This study sought to identify the factors influencing learning motivation and demotivation in online dental technology students. Methods: A survey was conducted from October 1 to 30, 2021, on 188 dental technology students. The collected data were processed using the IBM SPSS IBM SPSS Statistics ver. 22.0 statistical program (IBM), and frequency, factor, and one-way ANOVA analyses were performed, for which the significance was set at 0.05. Results: It was found that the main online learning motivation factors were the usefulness of the learning content, interest, and confidence in the activities, the relationships with the teachers and friends, the feedback, and learning satisfaction. The factors that reduced the students' online learning motivation were interaction difficulties, maladaptation to the self-directed learning environment, the inadequate number of learning activities, and activity difficulty. Conclusion: Based on the identified online class motivation and demotivation factors, better systematic management and increased research are needed to improve the quality of non-face-to-face classes.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2021.11a
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• pp.250-251
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• 2021

A subcontract work order is the basis of the construction process and consists of the root and trunk of the construction industry. The construction process through a subcontract work order is an important element of project success, and it is the basic unit of creating profit in the construction industry. Therefore, correct analysis and forecasting of subcontract work orders allow correct estimation of construction cost and profit which is the foundation of corporate decision making. This study has started to provide predictions of subcontractor's bidding-ratio for decision-making. Since the actual project data has been used in this study, the contribution level of the model is highly expected in actual field. The statistical confidential level of adjusted decision coefficient is concluded low because of limited sample numbers. However, its accuracy and confidence level can be increased through increasing sample numbers, considering more variables, and studying of reducing error.

• Journal of Internet Computing and Services
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• v.24 no.5
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• pp.75-84
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• 2023

This study aims to investigate the influence of online entrepreneurship education on first-time entrepreneurs in western China. The research employed an online self-management survey method to collect data from participants involved in online entrepreneurship education and first-time entrepreneurs. The data was analyzed using SPSS and AMOS statistical software. The research findings indicate that online entrepreneurship education has a positive impact on entrepreneurial intention. There is a positive correlation between online entrepreneurship education and entrepreneurial execution capability. Entrepreneurial intention effectively promotes entrepreneurial execution capability, which is critical for successful entrepreneurship. Online entrepreneurship education also emphasizes the development of innovative abilities and thinking patterns, thereby enhancing the competitiveness of entrepreneurs. Additionally, entrepreneurial support plays a direct positive role in entrepreneurial success by providing resources, guidance, knowledge sharing, and confidence, thereby increasing the likelihood of success.

• Journal of Digital Convergence
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• v.16 no.9
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• pp.503-512
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• 2018

The purpose of this study was to empirically investigate the relationship among physical education professor-trust, attitude in physical education and self-management which pre-service elementary school teachers perceive. For this purpose, data from 328 students in universities of education located nationwide were collected and analyzed. Descriptive statistics analysis, reliability analysis, correlation analysis were conducted on the collected data by using IBM SPSS 23.0 statistical program, and confirmatory factor analysis and verification on structural equation model were conducted by using IBM AMOS 23.0 program. Through this research process, following conclusions were obtained; First, prospective elementary school teachers' confidence in physical education has a significant effect on attitude in physical education. Second, prospective elementary school teachers' attitude in physical education has a significant effect on class satisfaction. Third, prospective elementary school teachers' confidence in physical education has a significant effect on class satisfaction.

• Health Policy and Management
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• v.5 no.2
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• pp.155-172
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• 1995

This study is an empirical analysis on the equity in the delivery of heatlh care under the Korean Medical Insurance Corporation System. The purposes of this study are to find out effects of income on the health care utiliztion and measure the income-related inequity in the distribution of health care. This study was carried out based on the fact that the health insurance program has been organized to achieve the equity objective, "equal treatment for equal needs". Of 41, 828 insured persons who had been diagnosed in the 1993 Health Screening Test and utilifzation data from 1, January 1993 through 31, December 1993 were derived from the Benefit Managment File. Inequity was measured by means of I) share approach, ii) standardization concentration curve approach, iii) inequity index, iv) test for inequity. The major findings were as follows : 1. The expenditure shares of the top two quintile groups exceeded their morbidity shares, whereas the opposite was true of the bottom three quintile groups, Which showed a positive HI$_{LG}$ inequity index, suggesting the presence of some inequity favoring the rich group. 2. Compared with other residential areas, the rural area showed the highest positive HI$_{LG}$ irrespective of need indicatior applied. 3. Standardized expenditure concentration indices adjusted by age, gender and need structure were also found to be positive, and therefore still indicated that there has been inequity favoring the rich after the standardization. 4. The Loglikelihood Ratio (LR) test for the statistical significance of income-related inequity of medical care utilization was carried out using the logistic regression model. The resulting loglikelihood ratio test statistic value was 176, which did exceed the 0.5 percent critical value of the chi-square distribution with 28 degrees of freedom, which is 50.993. Therefore, the null hypothesis of no income-related inequity of medical care utilization was rejected at the 99.5 percent confidence level. 5. The Regression based F-test has been carried out for analyzing the income-related inequity of medical expenditure in terms of age, gender, morbidity indicators as explanary variables. The hypothesis of the absence of income-relate inequity was rejected for all need indicators at the 95% confidence level.nce level.

• Journal of the Korea Convergence Society
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• v.11 no.8
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• pp.309-316
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• 2020

The purpose of the study is to know that the medical skin care improves the quality of middle-aged women's life and happiness improves their confidence by analyzing the medical skin care visit intention, experience satisfaction, and happiness according to their beauty interest. This study analyzed 242 copies of the data through the SPSS v.22 Statistical Package Program. According to the analysis, middle-aged women's interest in beauty is important to experience satisfaction(F=201.821, p<.001). Experience satisfaction is statistically significant to happiness factors(F=384.625, p<.001). Based on this study, differentiated marketing that identifies the intention to visit is needed. Also, the higher the satisfaction of medical skin care experience, the more helpful it is to lead a positive life by improving their confidence.

• The Journal of Engineering Geology
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• v.25 no.1
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• pp.9-20
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• 2015

A strainmeter goes through a period of instability immediately after installation. To determine the stability of strainmeters installed around the Andong fault zone, South Korea, an x-MR control chart analysis and a T² control chart analysis were conducted. The x-MR control chart analysis used an empirically determined 3σ control limit line to identify abnormal data in recently installed strain gauges. In the T² control chart analysis, the control limit line was set at a confidence of 95%. A comparison of the early stage of measurement with the terminal stage of measurement for three months after installation indicates that stabilization depends on the location and direction of each strain gauge in x-MR control chart analysis. In the T² control chart analysis, the number of values exceeding the control limit line decreased as the terminal stage was approached. Based on these results, it is suggested that the 3σ control limit line of an x-MR control chart can be used as a standard for single gauge stability, and that the 95% confidence limit of a T² control chart analysis could be used as the standard for the stability of multi-gauge strainmeters.