• Journal of Korean society of Dental Hygiene
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• v.18 no.6
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• pp.947-956
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• 2018

Objectives: The purpose of this study was to establish a relationship among oral health perception, practicality, and the health-promoting lifestyle profile (HPLP) of soldiers, to finalize the oral health education content to be offered to military personnel under military service and explore remedial measures. Methods: The subjects included military soldiers older than 19 years of age in the Chungnam province. The study instrument was a structured questionnaire evaluating the general characteristics, HPLP, oral health perception, and oral health practice. Data were analyzed using one way analysis of variance (ANOVA), Kruskal-Wallis ANOVA, Pearson correlation, and multiple regression analysis. Results: The HPLP evaluation of the soldiers was 3.39, and the group with the higher HPLP level showed better oral health recognition and oral health practice, with a statistically significant difference. There were differences in oral health perception, tooth brushing practice, and oral health education interest depending on the level of education and stratum of the soldier. The higher the soldier's HPLP, the higher were the oral health perception and oral health practice. The factors affecting the HPLP were oral health perception, tooth brushing practice, and interest in oral health education. Conclusions: After the military discharge, it is necessary to devise ways that will enhance oral health perception and practices that promote good oral health and lifestyle.

• Journal of Convergence for Information Technology
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• v.9 no.9
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• pp.175-184
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• 2019

The purpose of this study was to analyze the moderating effects of teacher support on the effects of acculturation stress on school adjustment of multicultural adolescents. To this end, we used the 6th Year (2016) adolescents survey data of 1,329 multicultural adolescents from the Multicultural Adolescents Panel Survey(MAPS), which was constructed by the National Youth Policy Institute(NYPI). Using SPSS 22.0, frequency analysis, descriptive statistical analysis, and moderated multiple regression analysis were used as dependent variables for school adjustment of multicultural adolescents, as independent variables for school adjustment, and as moderating variables for teacher support. As a result, first, multicultural adolescents experienced acculturation stress, and school adjustment decreased as the acculturation stress increased. Second, teacher support was found to have a statistically significant moderating effect on the effects of acculturation stress on school adjustment of multicultural adolescents. Based on the results of this research, I discussed and suggested the supportive measures, the role of teachers, and follow-up research to reduce the acculturation stress of multicultural adolescents and increase the level of school adjustment.

• Safety and Health at Work
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• v.9 no.4
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• pp.454-461
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• 2018

Background: Working conditions and psychosocial work factors have acquired an important role explaining the well-being and performance of professional drivers, including those working in the field of public transport. This study aimed to examine the association between job strain and the operational performance of public transport drivers and to compare the expositions with psychosocial risk at work of three different types of transport workers: taxi drivers, city bus drivers, and interurban bus drivers. Method: A sample of 780 professional drivers was drawn from three transport companies in Bogota (Colombia). The participants answered the Job Content Questionnaire and a set of sociodemographic and driving performance questions, including age, professional driving experience, work schedules, and accidents and penalties suffered in the last 2 years. Results: Analyses showed significant associations between measures of socio-labor variables and key performance indicators such road traffic accidents and penalties. Furthermore, multiple linear regression analysis contributed to explain significantly suffered accidents from key variables of the Job Demand-Control model, essentially from job strain. In addition, throughout post-hoc analyses, significant differences were found in terms of perceived social support, job strain, and job insecurity. Conclusion: Work stress is an issue that compromises the safety of professional drivers. This research provides evidence supporting a significant effect of job strain on the professional driver's performance. Moreover, the statistically significant differences between taxi drivers, city bus drivers, and interurban bus drivers in their expositions to work-related stress suggest the need for tailored occupational safety interventions on each occupational group.

• The Korean Journal of Applied Statistics
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• v.34 no.5
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• pp.711-721
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• 2021

In this paper, we propose the method of adjusting thresholds using impurity indices in classification analysis on imbalanced data. Suppose the minority category is Positive and the majority category is Negative for the imbalanced binomial data. When categories are determined based on the commonly used 0.5 basis, the specificity tends to be high in unbalanced data while the sensitivity is relatively low. Increasing sensitivity is important when proper classification of objects in minority categories is relatively important. We explore how to increase sensitivity through adjusting thresholds. Existing studies have adjusted thresholds based on measures such as G-Mean and F1-score, but in this paper, we propose a method to select optimal thresholds using the chi-square statistic of CHAID, the Gini index of CART, and the entropy of C4.5. We also introduce how to get a possible unique value when multiple optimal thresholds are obtained. Empirical analysis shows what improvements have been made compared to the results based on 0.5 through classification performance metrics.

• The Journal of Korean Academy of Prosthodontics
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• v.57 no.4
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• pp.416-424
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• 2019

Peri-implantitis appears in almost 20% of patients who received implant treatment, and increase in its number is inevitable as time goes by. Although it can be treated by both non-surgical and surgical procedures, in cases which include severe bone loss, explantation and rehabilitation may be necessary. Careful treatment planning and considerations to prevent recurrent peri-implantitis should be taken into account. In the following case presented, a patient with chronic periodontitis and peri-implantitis was successfully rehabilitated after removal of several implants. Extraction and explantation of multiple teeth and implants were followed by full mouth reconstruction with fixed implant prostheses on the mandible and implant retained overdenture on the maxilla. Surgical and prosthetic measures to prevent recurrent peri-implantitis were taken into consideration.

• Research in Community and Public Health Nursing
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• v.31 no.spc
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• pp.525-533
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• 2020

Purpose: Workers in special employment relationship (WSERs) are workers in nonstandard employment arrangements who lack worker protection accorded in standard employment arrangements. This study aimed to describe self-rated health (SRH) and depressive symptoms (DS) among Korean WSERs in comparison to regular wage workers (RWW) and identify associations between working conditions and those outcomes. Methods: In this study, secondary data analysis using the 5th Korean Working Conditions Survey was used. The sample totaled 29,120, including 1,538 WSERs and 27,564 RWWs. Sociodemographic and work-related characteristics were employed as explanatory variables and SRH and DS as dependent variables. Using multiple logistic regression, the determinants of fair/poor SRH and DS were identified. Results: The prevalence rates for fair/poor SRH and DS in WSERs were 25.2% and 28.3%, respectively, and 20.7% and 25.0% in RWWs, respectively. Compared to RWWs, WSERs had 31% (aOR=1.31, 95% CI=1.14~1.49) and 20% (aOR=1.20, 95% CI=1.06~1.36) higher odds of SRH and DS, respectively. Some factors, such as a lack of rest guarantee and sickness presenteeism, had a larger influence in the WSER than in the RWW group. Conclusion: Compared to RWWs, WSERs reported having poorer working conditions and were more likely to report poor general and mental health. Therefore, in Korea, public health policymakers should consider measures to protect the working conditions and health of WSERs, a growing segment of the working population. The study produced new epidemiological evidence regarding the relationships between employment arrangements and health.

• Journal of Convergence for Information Technology
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• v.10 no.12
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• pp.140-145
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• 2020

This study was conducted to check the effect of parenting attitudes on oral health behavior on lower grade elementary school students where oral care habits are formed. The subjects of the study were 366 students in the lower grades of elementary school, and the research tools used self-written questionnaires that were modified and supplemented to suit this purpose. Parenting attitudes of parents and lower-grade oral health behavior of elementary school students showed significant amounts of correlation, especially affectionate, autonomous and reasonable parenting attitudes were highly correlated with oral health behaviors(p<0.01). A multiple regression analysis to identify the factors affecting oral health behavior showed that parental attitudes also had a significant effect on the child variables(p<0.01). Therefore, since parenting attitudes are related to children's oral health behaviors, it is believed that measures should be taken to promote oral health education that can be improved by combining them.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.3
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• pp.520-526
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• 2021

The purpose of this study is to grasp the relationships between workplace spirituality, job turnover intentions, and job satisfaction in supporters for the disabled. The study was conducted with 134 OO supporters for the disabled. As an analysis method, SPSS software was used to perform frequency analysis, reliability analysis, correlation analysis, and multiple regression analysis of causal relationships between variables. The results of the study first found that vocational consciousness, a sub-factor of workplace spirituality in supporters for the disabled, had a significant negative (-) effect on turnover intentions. Second, as a result of examining the effects of workplace spirituality on job satisfaction in supporters for the disabled, other sub-factors of workplace spirituality (vocational consciousness and community consciousness) were found to have a positive (+) effect on job satisfaction. This means that a higher vocational consciousness of workplace spirituality perceived by supporters for the disabled lessens turnover intentions. The implications of this study are considered to be basic data for the development of capacity-building programs to prepare measures to reduce the turnover intentions in supporters for the disabled.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.17 no.2
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• pp.29-40
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• 2007

The purpose of this research is to propose a method for scoring the quality of a fingerprint image using the local information derived from the fingerprint image. In previous works for the quality measuring, most of the quality scores are related to the performance of a matching algorithm, and this makes the quality result more subjective. The quality score of a fingerprint image proposed in this work is sensor-independent, source-independent and matcher-independent one, and this concept of fingerprint sample quality results in effective improvement of the system performance. In this research, a new definition of fingerprint image quality and a new method for measuring the quality are proposed. For the experiments, several sub-databases from FVCs are used and the proposed method showed reasonable results for the test database. The proposed method can be used in various systems for the numerous purposes since the quality scores generated by the proposed method are based on the idea that the quality of fingerprint should be sensor-independent, source-independent and matcher-independent.

• Journal of KIBIM
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• v.10 no.4
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• pp.1-10
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• 2020

While the importance of barrier-free and fire evacuation design is highlighted in architectural design education, systemic analysis, and examination on such performances are still challenging due to methodological lacks. The present study investigates the effectiveness of BIM-based human behavior simulation for architecture major students' analytical examinations to promote barrier-free and fire evacuation performances. To achieve such an aim, quasi-experiments were conducted, which compare 50 students' analysis and examination scores according to the use and non-use of the simulation, and the data were collected via participants' survey and interview. As a result, T-Test and MANOVA analyses indicate that, compared with its non-use counterpart, the use of human behavior simulation better facilitates the students' (1) examination of the physical properties and dimensions for the disabled's accessibility and evacuation, (2) understanding of the bodily capacity and handicap of the disabled, (3) examination on the spatial layouts and locations of exits, (4) understanding on evacuees' urgent behaviors, and (5) responsibility as an architect. Based on previous studies, the reasons of statistical results are interpreted as the explicit observation and analytical measures of multiple numbers of virtual-evacuees and direct-experience from body range of the disabled responding to the populated occupants as what they face in authentic reality.