• Journal of Information Processing Systems
• /
• v.17 no.3
• /
• pp.630-644
• /
• 2021

Educational data analysis is attracting increasing attention with the rise of the big data industry. The amounts and types of learning data available are increasing steadily, and the information technology required to analyze these data continues to develop. The early identification of potential dropout students is very important; education is important in terms of social movement and social achievement. Here, we analyze educational data and generate predictive models for student dropout using logistic regression, a decision tree, a naïve Bayes method, and a multilayer perceptron. The multilayer perceptron model using independent variables selected via the variance analysis showed better performance than the other models. In addition, we experimentally found that not only grades but also extracurricular activities were important in terms of preventing student dropout.

• Journal of Korean Society of Rural Planning
• /
• v.19 no.4
• /
• pp.105-113
• /
• 2013

This study aimed to provide basic data for the national park management by analysing visitors' behavior and satisfaction determinants by importance-performance analysis and estimated regression analysis through post-occupancy evaluation questionnaire method to the Gyeongju National Park visitors. It was found that facilities and use management according to place and use group, the diversity of visit program, high quality of guidance and hospitality of staffs and conservation of historic and landscape resources for Gyeongju National Park were necessary as the results of behavior analysis, importance-performance analysis. The historic landscape resources, hospitality of staffs, visit road and safety facilities, commercial facilities were important determinants of users' satisfaction as the results of regression analysis. It suggested the characteristics of Gyeongju National Park and these factors were the most important factors for the improved management.

• Journal of the Korea Institute of Military Science and Technology
• /
• v.15 no.5
• /
• pp.660-666
• /
• 2012

The weapon system is getting more and more expensive, complex and smarter. Therefore, efficiently and effectively, it is important to operate the weapon system. OMS/MP is a document to quantify operational factors like as environment, mission, mode etc. It is important data to perform RAM analysis in early weapon development phase and operate better a weapon system. This paper present a process and framework of OMS/MP for a naval ship with a deep analysis of relevant domestic and abroad case studies. It propose OMS/MP analysis framework based on wartime scenario and mission area analysis. This result will contribute not only improvement for the availability of a naval ship but also enhancement of RAM analysis process.

• International conference on construction engineering and project management
• /
• 2009.05a
• /
• pp.1364-1369
• /
• 2009

The building construction projects include a variety of risk factors due to uncertainties. To succeed in the projects, it is important how risks are managed. Risk management is composed of identification, analysis and response. Especially, the risk analysis is important to objectively calculate significance of risk factors. This paper evaluates a method to find priorities of risks using the AHP(Analytic Hierarchy Process). The method has some defects; (1) the consistency becomes weak as the number of pair-wise compared risks is large, and (2) the input and output procedures are complex when risks are added to or removed from a risk database. Thus the paper adopt the PROMETHEE(Preference Ranking Organization METHod Enrichment Evaluations) analysis process which is able to overcome the limitation of the AHP restricted to 9 risk factors. The PROMETHEE method makes the procedure of risk analysis simple, when the risk factors pull out and put in the risk database. The purpose of this study is to prove the possibility of the PROMETHEE analysis process by being compared with AHP.

• Journal of the Korean housing association
• /
• v.25 no.5
• /
• pp.125-132
• /
• 2014

The purpose of this study is to estimate the determinants of Elderly Residental Satisfaction on the residential environment improving projects and suggest the political implications. The survey include questionnaires about the satisfaction level on the project physical and non-physical maintenance factors. The results were statistically analyzed by Correlation Analysis and Regression Analysis. As the result of the study, firstly, it shows that 'traffic and improve pedestrian environment' and 'improved parking environment' factors that are important to the satisfaction of the elderly residents of a high impact on the business component a physical maintenance. Secondly, it shows that 'home improvement and management support' and 'economic foundation' factors that are important to the satisfaction of the elderly residents of a high impact on the business component a non-physical maintenance. The results of analysis on the determinants of Elderly Residental Satisfaction on the residential environment improving projects of Yonnam project may be important foundation for future strategies for improvement.

• Journal of Korean Academy of Nursing
• /
• v.15 no.2
• /
• pp.5-15
• /
• 1985

This study was conducted for the purpose of fin-ding out the variance explaining the medical facilities utilization behavior, which is defined adaptation behavior Process by focal, contextual, residual stimuli in Roy's Adaptation Model. What kinds of characteristics can explain adaptation behavior in Roy's Model? And which is the relative importance of input variables? For this analysis, stepwise multiple regression and path analysis was used. The data come from the 1981 Baseline Household Interview Survey in remote rural area. The findings of the analysis can be summarized as follows: First, Total variance of independant variables for adaptation behavior, that is medical facilities utilization including clinic, drug store, health center, herb medicine was shown 16.2 percent. The most important variable which explain the dependent variable was the occurance of illness with the Ra of value 0.112. The illness symptom, living level, regular care source was shown important variables with relatively high the R²value and significant beta coefficient. Second, in the path analysis of variables which is selected important variables, the occurance of illness was shown variable which has the highest direct effect which 0.297 path coefficient. Also the education level of household was shown variable which has the highest indirect effect through living level and the occurance of illness in causal model. Third, This analysis suggests that the occurance of illness belonging focal stimuli are more influenced than others. To sum up, It is seem to the occurance of illness, illness symptom belonging focal stimuli have high explanation ability through direct effect, education level of household among contextual stimuli have explanation ability through indirect effect.

• Journal of the Computational Structural Engineering Institute of Korea
• /
• v.24 no.4
• /
• pp.391-398
• /
• 2011

After a concrete is poured, reinforced concrete structures were distressed by physical and chemical factor over time. It is in need to define important variables related to structural behavior for effectively conducting seismic analysis of structures with age-related degradation. In this study, a sensibility analysis using the first-order second moment method was performed to analyze an important variables for the reinforced concrete shear wall with age-related degradation. Because the seismic capacity of aging structures without a concrete hardening effect can be underestimated, the sensibility of analysis variables was analyzed according to the concrete hardening. Important variables for RC shear wall with age-related degradation was presented by using the tornado diagram.

• Journal of the Korea Fashion and Costume Design Association
• /
• v.19 no.1
• /
• pp.147-162
• /
• 2017

The purposes of this study were to investigate objectified body consciousness and appearance management behaviors, and to analysis the differences on this two variables between Korean and Chinese consumers. The subjects were 700 Korean and Chinese female university students. The research method was a survey and the measuring instruments consisted of objectified body consciousness scale, appearance management behaviors items, and subjects' demographics attributions. The data were analyzed by frequency analysis, cross tabs analysis, $x^2$ test, Cronbach' ${\alpha}$, factor analysis, t-test, and regression analysis, using SPSS statistical program. The results were as follows. First, three factors(body surveillance, body shame, and control belief) were emerged on objectified body consciousness, and Korean students showed the higher level of objectified body consciousness than Chinese students. Second, Korean students had much more experience and a higher intention to perform various appearance management behaviors than Chinese students. Third, body shame and control belief factors had important effects on appearance management behaviors of both country students. However, body surveillance was an important factor on only Korean students' appearance management behaviors. This study showed that objectified body consciousness is an important variable to affect appearance management behaviors, and there are many differences on objectified body consciousness and appearance management behaviors by cultural environments.

• Journal of the Korean Institute of Landscape Architecture
• /
• v.29 no.6
• /
• pp.21-26
• /
• 2002

The propose of this study is to suggest objective data to be utilized for a plan and the improvement of open space through the analysis of people's behaviour and satisfaction after the introduction of an opened-fence around offices followed by a plan for wall-afforestation of public institution's. The sites examined are four offices; two of them have opened-walls and the others have traditional enclosure. Analysis of frequency is conducted to understand the actual use according to people's individual peculiarities. Pearson's correlation analysis, t-test, multiple regression analysis are carried out to find out relations of fluents. In the end, the satisfaction is high in public institution satisfaction, entrance, space perception. stability, Landscaped office with opened-fence rather than fence, and the increase in usage of fluent of public institution satisfaction, entrance, space perception. stability, confusion brings about rising of use-satisfaction. Satisfaction with the exterior of building is the most important variable that influences the whole urban open space. Furthermore the influences of the approach and stability having connection with open or not-open fence is major variable affecting satisfaction of use of open space. Whether open or not is important factor on satisfaction of open space of office building. Through this study, we can find that opened fence determines use satisfaction of resting space of outdoor-office. So factors affecting satisfaction must be regarded as important requisite on planning, design, development and management in plan for afforestation of fence at public institution.

• Journal of the Korean Society of Costume
• /
• v.52 no.5
• /
• pp.15-30
• /
• 2002

The purposes of this study were to identify the Chinese university students' clothing attitudes and purchasing behavior according to their lifestyle. Questionnaires developed by researcher were distributed and collected from 540 Chinese university students from Mar. 5 to Mar. 20, 2001. Means, frequencies, and percentages were calculated. Factor analysis, cluster analysis. one-way ANOVA, and Chi-square test were used for data analysis. And Duncan's multiple range test was followed. The factors of lifestyle were consumption, self-confidence, economy, accomplishment. sociability. fashionability, individuality, and conservation. Chinese university students were segmented into 4 groups of the modern sociable, the passive stagnated, the positive progresive, and the traditional conservative. The group size of the modem sociable was the smallest, and the traditional conservative was the largest. Chinese university students considered sexual attractiveness of clothing most important. Psychological dependence and ostentation of clothing were next important in a decending order. The passive stagnated considered conformity of clothing most important and showed the opposite tendency of the modern socialable. The positive progressive considered all aspects of clothing attitudes important, and showed the opposite tendency of the traditional conservative. Chinese university students utilized direct fashion information sources, and patronized medium or small size department store or traditional market.