• Journal of Korea Society of Digital Industry and Information Management
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• v.19 no.4
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• pp.137-146
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• 2023

The dropout of university freshmen is a very important issue in the financial problems of universities. Moreover, the dropout rate is one of the important indicators among the external evaluation items of universities. Therefore, universities need to predict dropout students in advance and apply various dropout prevention programs targeting them. This paper proposes a method to predict such dropout students in advance. This paper is about a method for predicting dropout students. It proposes a method to select dropouts by applying logistic regression using a shift sigmoid classification function using only quantitative data from the first semester of the first year, which most universities have. It is based on logistic regression and can select the number of prediction subjects and prediction accuracy by using the shift sigmoid function as an classification function. As a result of the experiment, when the proposed algorithm was applied, the number of predicted dropout subjects varied from 100% to 20% compared to the actual number of dropout subjects, and it was found to have a prediction accuracy of 75% to 98%.

• Journal of the Korea Society of Computer and Information
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• v.23 no.5
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• pp.65-72
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• 2018

This study analyzes college dropout cases to reduce its rate. The analysis is preferentially carried out by figuring out our current situation of college dropout rate in pertinent cases and all around country's. Based on the current states, statistical analysis is accomplished as follows; analyzing the characteristic differences between the being in school's and the dropouts' by T-Test, determining the influence factor by logistic regression analysis and drawing the target group for special treatments through these statistical analysis. To reduce dropout rate, several measures could be adopted; focused counseling for each target group, special monitoring for students on leave of absence and opening major subjects for improving relationship between students and professors. The measures suggested by the analysis through this study are expected to lower the dropout rates effectively in college or specific fields including engineering science.

• Journal of muscle and joint health
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• v.6 no.2
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• pp.185-196
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• 1999

The purpose of this study was to identify influencing factors adherence and dropout of aquatic exercise in patients who had been diagnosed chronic arthritis. Subjects were 54 patients with rheumatoid arthritis and osteoarthritis who had participated in the 6-week aquatic exercise program in Taejon metropolitan city. Data was collected from march 25 to April 25, 1999 through face to face and telephone interview. Result are as follows. Fourteen subjects(26.0%) were adherer who was keeping aquatic exercise. The reasons of aquatic exercise adherence were improvements of physical and affectional factors. And the major reasons of dropout was an environment factors(65.8%) and second reasons was physical factors(34.2%). Participants of friends(r=.34, p=.014) was significantly associated with the total duration of an aquatic exercise adherence. For these results, the nurse who care to patients with arthritis have to encourage to maintain aquatic exercise within six month after they begin aquatic exercise.

• Nutrition Research and Practice
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• v.8 no.1
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• pp.94-102
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• 2014

Diet attrition and failure of long term treatment are very frequent in obese patients. This study aimed to identify pre-treatment variables determining dropout and to customise the characteristics of those most likely to abandon the program before treatment, thus making it possible to modify the therapy to increase compliance. A total of 146 outpatients were consecutively enrolled; 73 patients followed a prescriptive diet while 73 followed a novel brief group Cognitive Behavioural Treatment (CBT) in addition to prescriptive diet. The two interventions lasted for six months. Anthropometric, demographic, psychological parameters and feeding behaviour were assessed, the last two with the Italian instrument VCAO Ansisa; than, a semi-structured interview was performed on motivation to lose weight. To identify the baseline dropout risk factors among these parameters, univariate and multivariate logistic models were used. Comparison of the results in the two different treatments showed a higher attrition rate in CBT group, despite no statistically significant difference between the two treatment arms (P = 0.127). Dropout patients did not differ significantly from those who did not dropout with regards to sex, age, Body Mass Index (BMI), history of cycling, education, work and marriage. Regardless of weight loss, the most important factor that determines the dropout appears to be a high level of stress revealed by General Health Questionnaire-28 items (GHQ-28) score within VCAO test. The identification of hindering factors during the assessment is fundamental to reduce the dropout risk. For subjects at risk, it would be useful to dedicate a stress management program before beginning a dietary restriction.

• Journal of the Korean Statistical Society
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• v.29 no.2
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• pp.219-229
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• 2000

Oh et al.(1999) 3$\times$2 crossover design for assessing bioequivalence when two new generic drug formulations and innovator are simultaneously considered. This design is not only more efficient than 3$\times$3 one, proposed by Lee et al.(1998), in practical sense, but also more ethical in medical sense. However, the general statistical methods are not directly applicable to both designs when subjects are dropped out in the experiment, even though it is always possible in bioavailability and bioequivalence studies because of some administrative and economic reasons. In this research we propose an inference to drug effects when subjects are dropped out in the planed-for 3$\times$3 and 3$\times$2 crossover experiments. An example is given for illustration.

• Journal of Convergence for Information Technology
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• v.10 no.10
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• pp.161-173
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• 2020

This study tries to examine the effects of multicultural adolescent's ego-resilience, biculture acceptance, bullying, and parenting attitude on their intention of school dropout. To do this, the subjects(n=1,347) extracted from the 5^th year of the Multicultural Adolescent Panel Survey were analyzed by using hierarchical regression analysis. The founded results are as follows. First, multicultural adolescent's strong ego-resilience, biculture acceptance and positive parenting attitude decreased their intention of school dropout. Second, multicultural adolescent's bullying had no effect on it. Third, negative parenting attitude increased multicultural adolescent's intention of school dropout, playing the most significant role in the change of their intention of school dropout. On the based of findings, the study suggested various the programs to prevent multicultural adolescent's intention of school dropout which can be practiced in the field service.

• Journal of Digital Convergence
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• v.19 no.1
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• pp.379-388
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• 2021

The purpose of this study is to identify the effect of parent-rearing attitudes on intention of school dropout of multicultural adolescent and the mediating effect of biculture acceptance between two variables. For the purpose, 1,323 subjects selected from the sixth year of the Multicultural Youth Panel (MCAPS) were analyzed. The data was verified by using technical statistics, correlation, and path analysis. The results showed that first, the positive parenting attitude and biculture acceptance decreased the intention of school dropout of multicultural adolescent, while negative parenting attitude increased it. Second, biculture acceptance had a partial mediating effect on the relationship between positive parenting attitude and intention of school dropout. Third, attitude the effect of negative parenting attitudes on intention of school dropout was partly mediated by biculture acceptance. On the basis of above findings, the practical engagements to enhance biculture acceptance and prevent the intention of school dropout of multicultural adolescent were suggested.

• Journal of Industrial Convergence
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• v.21 no.6
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• pp.23-35
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• 2023

This study aimed to examine the effect of bicultural acceptance attitudes in Korean culture and mother's countries, which are sub-factors of multicultural adolescents' bicultural acceptance, on their intention of school dropout through self-esteem. For the analysis, the 1,105 subjects were selected from the 8th(2018) the Multicultural Adolescents Panel Study(MAPS). The data collected were analyzed by various research methods including correlation analysis, regression analysis and sobel test. The main results are as follows. First, bicultural acceptance of multicultural adolescents reduced their intention of school dropout. Second, self-esteem had a partial mediating effect in the causal relationship between multicultural adolescents' bicultural acceptance in Korean culture and intention of school dropout. Third, the effect of bicultural acceptance in mother's countries of multicultural adolescents on intention of school dropout was completely mediated by their self-esteem. On the basis of the findings, practical programs to decrease the intention of school dropout and to enhance self-esteem of multicultural adolescents were suggested.

• 한국정보컨버전스학회:학술대회논문집
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• 2008.06a
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• pp.89-92
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• 2008

This study analyzed the status and causes for the dropouts of college based on the survey conducted among 14,210 freshmen attending D College, other than the supernumerary special selection, from 2001 through 2005. A significant difference was shown in all items of general characteristics. The dropout rate of women, generally selected and general high school graduated were higher than for men, specially selected and special high school graduated, respectively. The most dropouts were due to Not Return(40.16%), followed by Unenrolled(32.98%), Voluntary Leave(26.05%) and Expelled(0.81%) in order. In the distribution of the central tendency values measured from the entire subjects. the high school records and the days of absence showed a positive skewness. while the college records showed a negative skewness with the data mostly around a higher grade. The standard deviation indicating that the dropouts got the scores higher than those of the continuing students demonstrated that there was relatively insignificant difference in scores between two groups.

• Journal of the Korea society of information convergence
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• v.1 no.1
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• pp.47-54
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• 2008

This study analyzed the status and causes for the dropouts of college based on the survey conducted among 14,210 freshmen attending D College, other than the supernumerary special selection, from 2001 through 2005. A significant difference was shown in all items of general characteristics. The dropout rate of women, generally selected and general highschool graduated were higher than for men, specially selected and special high school graduated, respectively. The most dropouts were due to Not Return(40.16%), followed by Unenrolled(32.98%), Voluntary Leave(26.05%) and Expelled(0.81%) in order. In the distribution of the central tendency values measured from the entire subjects, the high school records and the days of absence showed a positive skewness, while the college records showed a negative skewness with the data mostly around a higher grade. The standard deviation indicating that the dropouts got the scores higher than those of the continuing students demonstrated that there was relatively insignificant difference in scores between two groups. It was demonstrated that both the high school records and the days of absence affected the dropout. The lower the high school records were, and the more the days of absence were, the more influence both items had on the dropout. The influence degree of each item was similar. Lower the scores were in terms other than the first term in the freshmen year, the more influence it had on the dropout. The most dropouts were influenced by the scores of the freshmen year, followed by the credits of the second term, the scores of the first term, the scores of the second term, and the credits of the first term in the freshmen year. Among the general characteristic items, the most dropouts were influenced by the course of study, followed by the gender. The effect of other items was insignificant.