• 대한공업교육학회지
• /
• v.34 no.2
• /
• pp.304-320
• /
• 2009

This study was performed to grasp relations between different sub-factors of youths' leadership living skills and between the sub-factors of youths' leadership living skills and personal features (support by parents, support by peers, sense of self-respect, sense of self-effectiveness) in order to generally understand the characteristics of youths. The result and conclusion of this study are as follows. First, the sub-factors of youths' leadership living skills showed various kinds of correlations and especially, measures to improve learning ability skill, self-understanding skill and group activity skill are necessary for healthy and general growth in adolescence. Second, the sense of self-respect showed positive correlations with decision making skill and self-understanding skill and programs are to improve leadership living skill gradually and positively through the enhancement of the sense of self-respect. Third, the degree of support by peers showed relations with decision making skill and group activity skill meaning the importance of peer groups in adolescence and diverse measures to form peer groups are necessary.

• The Transactions of The Korean Institute of Electrical Engineers
• /
• v.62 no.8
• /
• pp.1080-1089
• /
• 2013

Interior Permanent Magnet Synchronous Machines (IPMSMs) with rare earth magnet are widely used in electric vehicles and hybrid electric vehicles. IPMSMs having high efficiency, high torque, and a wide speed range are employed in propulsion system. And the rotor in an IPMSM is generally made of a rare earth magnet to achieve a large energy product and high torque. This paper discusses issues regarding design and performance of IPMSMs using different factors of BH magnetic characteristic. It is necessary to choose factors of magnetic material according to permanent magnet shape in rotor for high performance. Response Surface Methodology (RSM) is selected to obtain factors of magnetic material according to variety of rotor shapes. The RSM is a collection of mathematical and statistical techniques useful for the analysis of problems in which a response of interest in influenced by several variables and the objective is to optimize response. Therefore, it is necessary to analyze the torque characteristics of an IPMSM having magnet BH hysteresis curve with different rotor shape. Factors of residual flux density (Br) factor and intrinsic coercive force (Hc) are important parameters in RSM for rotor shape. The rotor shapes for IPMSMs having magnet BH characteristic were investigated using the RSM, and three shapes were analyzed in detail using FEA. The results lead to design consequence of IPMSMs in the various rare earth magnet materials.

• The Journal of Korean Society for School & Community Health Education
• /
• v.13 no.2
• /
• pp.107-118
• /
• 2012

Backgrounds: In order to prevent dental injuries that often occur in child and adolescent, it is intended to investigate and assess actual state of the injury development, present epidemiological background, and consider and discuss for preparing preventive means against the injury development. Purpose: It was attempted to understand major features of dental injuries developing in child and adolescent and indentify high risk factors of dental injuries in child and adolescent. Methods: In this study, 523 cases of computerized data collected as disease entities of dental injuries among 1-18 years old patient visiting S university hospital located in Seoul in 2009 were analyzed and following results were obtained. Results: It was found that the ratio of dental injuries by genders in child and adolescent was 66.14% of male and 33.86% of female. It was shown also that causes of dental injuries by ages were more in order of falling, bumping, chewing, traffic accident, sports, violence, and crash. In addition places where dental injuries occur by ages were home in less than 5 year old group, park, playground, and play yard in 6-11 year old group, park, playground, and play yard also in 12-14 year old group, and stairs, road, and outdoor places such as mountain climbing, beach, and camping in 15-18 year old group. It was found that time rages when dental injuries in child and adolescent often develop were 15-19 o'clock for falling, 15-19 o'clock for crash, 15-19 o'clock for bumping, 19-03 o'clock for violence, 15-19 o'clock for traffic accident, 15-19 o'clock for sports activity, and 15-19 o'clock for chewing. Conclusion: Background of dental injury inducing factors are very complicated and diversified, so deep study and analysis are required for its prediction. Therefore, it seems necessary to identify risk factors by phases such as before, at, and after accident, establish strategies to reduce injury development, and develop and utilize necessary programs.

• The Journal of The Korea Institute of Intelligent Transport Systems
• /
• v.17 no.4
• /
• pp.1-13
• /
• 2018

The present study was conducted to analyze transport mode choice factors of shippers in Korea and to suggest policy implications and directions for future research. The findings showed that the research on freight mode choice factors in Korea is somewhat insufficient compared to that of other countries. In order to enhance the research, it is necessary to expand the number of studies and to strengthen the research to reflect characteristics of each transport mode. In particular, it is necessary to focus on identifying the characteristics of multimodal transport, including railway and shipping linked to truck. On the other hand, it was confirmed that the major factors influencing the choice of transport mode of shippers in Korea overlapped with foreign research cases. In addition, the implications for policy were derived when the analysis was separately conducted for Korea and other countries regarding individual transport mode and transport range. These results could be applied to various fields such as policy making to improve the efficiency of shippers' selection of transport mode and the estimation of transport mode choice model.

• Journal of the Korea Convergence Society
• /
• v.10 no.12
• /
• pp.191-197
• /
• 2019

This study aimed to provide the basic data necessary for lowering the academic and job stress and turnover rate of male dental hygienists in the future, by understanding the academic and job stress factors of male dental hygienists. As the research method, this study conducted the one-to-one interview with five male dental hygienists with career experiences for 1-5 years at dental hospital and dental clinic, and the interview took about an hour. In the results of this study, the main academic stress factors were interpersonal relationship and too much assignment while the main job stress factors were communication problems with female staffs and director, and anxiety about the future. They relieved their stress through meeting with friends, relaxation, and hobbies. Based on such results of this study, it would be necessary to suggest the measures for improving the interpersonal relationship in academic life of male dental hygienists, providing information about employment, and also finding the future-oriented goals and confidence in the profession as a male dental hygienist.

• Journal of Korean Society of Transportation
• /
• v.22 no.7 s.78
• /
• pp.33-40
• /
• 2004

This study aims to provide guidelines for the selection of on-street parking spot on local streets considering conditions of surrounding area and characteristics of traffic generation. This guideline provides the method which determine required roadway width for planning and design of local streets. It is necessary to identify factors for the location selection analysis. This research team selects 12 case study areas to investigate traffic environment on the sites for this analysis. Most of factors which influence on-street parking are found to have a qualitative data format except traffic volume and pedestrian movement data. Quantification theory II which is known to be suitable for qualitative analysis has been applied to identify the meaningful variables for dependent variable. In addition, discriminant analysis has performed to verify the correlation for each variable with hit ratio. Road width, traffic volume, street traders and their heavy packages, and illegally parked vehicle are found to be most significant factors for selection of on-street parking location. Therefore, it is necessary to consider traffic volume generated from massive residential complex and traffic volume for outside and above-mentioned factors for installation of on-street parking facility in the case of new road construction or road width widen.

• Journal of the Korean Society of School Health
• /
• v.30 no.3
• /
• pp.355-364
• /
• 2017

Purpose: The purpose of this study was to identify health promotion behaviors of elementary school teachers and investigate the factors influencing the health promotion behaviors. Methods: Data were collected from 234 elementary school teachers in the B Metropolitan City Office of Education from 5th to 30th October, 2016. The collected data were analyzed by descriptive statistics, t-test, ANOVA, $Scheff{\acute{e}}$ test, Mann-Whitney test, Kruskal-Wallis test, Spearman correlation coefficient and multiple regression analysis, using SPSS/WIN 23.0. Results: The elementary school teachers' health perception scored 2.94 out of 4, health status 1.59 out of 3, and health promotion behaviors 2.66 out of 4. The level of mental health status (1.67) was higher than that of physical health status (1.54) and the most practiced health promotion behavior was spiritual growth (3.15) and the least was health responsibility (2.00). Significant negative correlations were found between health perception and health status (r=-.59, p<.001) and between health status and health promotion behaviors (r=-.41, p<.001). A significant positive correlation was found between health perception and health promotion behaviors (r=.32, p<.001). The significant factors influencing health promotion behaviors were job stress and health status. These factors explained 19.6% of the health promotion behaviors. Conclusion: It is necessary to establish measures to increase the health perception and health promotion behaviors of elementary school teachers and improve their health status. In addition, since job stress and health status are factors influencing health promotion behaviors, it is necessary to actively manage job stress and health status in order to increase health promotion behaviors.

• Journal of Korean Academy of Oral Health
• /
• v.42 no.4
• /
• pp.124-129
• /
• 2018

Objectives: The objectives of this study were to investigate the effects of oral health-related factors on the oral health knowledge, attitude, and practice of students of the Department of Dental Hygiene major, Health-related major, General major, and to provide primary data to improve the oral care ability of university students. Methods: After institutional review board approval, the study was conducted from May 15 to December 1, 2017. All 363 university students in Busan completed a questionnaire. In total, 332 questionnaires were analyzed. Thirty-one cases were excluded due to unreasonable responses. Data were analyzed using SPSS version 24.0. Results: Analysis of the factors related to knowledge, attitude, and practice of oral health according to the major field of study of the respondents indicated that students in the Dental Hygiene major demonstrated significantly better results. Conclusions: It is necessary to determine a way to manage the oral health of university students. In addition, voluntary participation of universities to improve oral health of university students is desirable. It is also necessary to establish national health policies and a national health care education curriculum for university students.

• Journal of the Korea Convergence Society
• /
• v.13 no.2
• /
• pp.115-122
• /
• 2022

This study was conducted to find out the factors influencing the subjective perception of some students majoring in dental hygiene. An online survey was conducted on 292 enrolled students, and the data were analyzed using SPSS 22.0. As a result of multiple regression analysis of the factors influencing subjective perception, the factors that significantly influence were positively influenced by admission according to general satisfaction, subject satisfaction, and aptitude. Therefore, it is necessary to improve the subjective perception of enrolled students through improvement of various factors. To this end, it is considered necessary to raise positive awareness and provide customized employment guidance by establishing various education and counseling support programs suitable for the subjects through continuous research in the future.

• The Journal of the Korea Contents Association
• /
• v.22 no.2
• /
• pp.255-269
• /
• 2022

In this study, it was necessary to examine consumer acceptance attitudes from an in-depth and multifaceted perspective at a time when the need for chatbot services in various industrial fields is increasing and being activated in earnest. Accordingly, this study conducted a structural equation model to examine not only the structural relationship between ease, usefulness, and playfulness among the main functions of chatbot services and their acceptance attitudes, but also whether there is a mediating effect of service value in the relationship. As a result of the main study of this study, it was identified that the relationship between the ease, usefulness, and playfulness factors, which are the main functional sub-factors of the chatbot service, and their acceptance attitude and service value had a statistically static influence relationship. Based on these research results, the main research conclusions suggest that when companies in various fields provide chatbot services in the future, it is necessary to clearly determine the influencing factors that can affect the chatbot service acceptance attitude and provide these services. Through this, it is expected that the AI chatbot service will strengthen communication with consumers and establish itself as a customized and personalized counseling service.