• 대한치과의사협회지
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• 제15권9호
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• pp.745-748
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• 1977

1,620 patients who visited our department from 1966 to 1977.7.15, were surveyed on the yearly tendency of patient distribution and the state of Angle's clssification. 1. There was increased visiting rate of patint a year. Patient distribution who visited in our department in the year 1976 was five 샤든 than that in the year 1966. 2. 10-15 age group was 41% in total visiting patient and 20 age over group was 20.4%. 3. Permanent dentition group was 66.2% among three dentitions but it was showedthe tendency that age group is lower year by year. 4. Class I malocclusion was 51.1% in total visiting patient, moreclass III maloulsion was prevalent than class II malocclusion.

• Human Ecology Research
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• 제52권6호
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• pp.669-682
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• 2014

The purpose of this study is to present a practical class design model that applies the problem-based learning (PBL) method to the subject of home economics. To begin with, a specific class model example was developed by conducting thorough document research and expert consulting. Two modules, named "Click! Global Leisure Environment" and "Happy Leisure Product Launching" were presented as the PBL questions. The case study focused upon in this research is an elective course called "Leisure Culture and Life Management". The 21 students enrolled in this course were considered in this study. Two teaching methods, namely a face-to-face teaching method and a web-based system "Snowboard" teaching method, were used to run the class. The research results are as follows: first, theoretical research and program development and demonstration were practiced with five different age groups: childhood, adolescence, university student, middle age, and senescence. Then, selfevaluation, peer evaluation, and group evaluation were conducted to motivate the students. Finally, a class evaluation was conducted by questioning the lecturer, who ranked well, scoring higher than or equal to 4.0 points out of 5.0 on all the questions. Through the PBL method, students showed an improved study attitude with more proactive participation in the class, they strengthened their communication skills and created a synergy with their team members. This study has significant meaning because it is the first research to apply the PBL method to home economics. Therefore, we expect other curricula to apply PBL and fully utilize this teaching method as well in the future.

• 대한치과교정학회지
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• 제20권2호
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• pp.333-354
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• 1990

This study was designed to analyse vertical dysplasia such as open bite or deep bite in persons with skeletal Class III malocclusion. The subjects consisted of 60 control patients, 40 Class III open bite patients and 40 Class III deep bite patients. The mean age was 19.8 years in the control group, 17.8 years in the Class III open bite group and 16.5 years in the Class III deep bite group. The results were as follows: 1. In Class III malocclusion patients, the characteristics of the vertical dysplasia are under the palatal plane. 2. In Class III malocclusion patients, the items showing the characteristics of the vertical dysplasia are mandibular plane angle, lower gonial angle, lower facial height, dental height & inclination of the upper first molar, interincisal angle, maxillary & mandibular occlusal plane angle. 3. In Class III malocclusion patients, LPFH/LAFH ratio shows the highest significance among the facial height ratios. 4. In Class III malocclusion patients, open bite group has a upward cant of maxillary occlusal plane & downward cant of mandibular occlusal plane. And deep bite group has a downward cant of maxillary occlusal plane & upward cant of mandibular occlusal plane. 5. In Class III malocclusion patients, the molar teeth of the open bite group are measially inclined and those of the deep bite group are upright.

• International Journal of Reliability and Applications
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• 제14권1호
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• pp.1-9
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• 2013

A nonparametric procedure for testing exponentially against used better than aged in expectation (UBAE) class of life distributions is presented. We construct a test statistics based on scaled total time on test (TTT)-transformation, to test exponentiality against UBAE class of life distributions. The distribution of the statistic is investigated via simulation. Practical applications of the proposed test are presented.

• 한국산학기술학회논문지
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• 제17권12호
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• pp.253-261
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• 2016

본 연구는 혼합연령학급의 현황과 학급 운영 실태를 파악하여, 혼합연령학급의 교사가 효과적으로 학급을 운영할 수 있도록 정책적 지원 방안을 모색하는데 목적이 있다. 이를 위해 먼저 전국 유치원의 혼합연령학급 운영현황 및 학급편성 기준을 분석하여 그 현황을 살펴보고, 다음으로 혼합연령학급 교사를 대상으로 설문조사를 통해 구체적인 어려움과 요구사항을 분석하였다. 설문조사는 유치원의 교육과정시간에 혼합연령학급을 운영하고 있는 담임교사 300명을 대상으로 웹조사로 실시하였으며, 빈도, 백분율, 교차분석을 실시하였다. 그 결과는 다음과 같다. 첫째 유치원의 혼합연령학급 편성이유는 취원 대상 유아의 수가 부족하다는 것이 가장 큰 이유였다. 둘째, 혼합연령학급 운영에서 지원인력의 부족, 교육(연수)제공 및 활용 기회 부족 등이 어려운 점으로 나타났다. 셋째, 혼합연령학급 운영에서 가장 필요한 운영지원으로는 수업인력 지원, 행정인력 지원 순으로 나타났다. 현재 이루어지고 있는 혼합연령학급 인력지원은 수업도우미, 행정도우미 순이었고, 유치원과 관련이 있는 유관 기관으로 지원 유무는 약 23.0%로 나타났고, 지원의 종류로는 교사연수, 인력예산, 컨설팅장학, 교재교구 등 수업자료 지원 순으로 나타났다. 이를 바탕으로 혼합연령학급 편성 시, 연령별 비율구성제시, 단계적 단일연령학급 편성유도, 혼합연령학급 교사 연수 기회제공 확대 등의 정책 지원방안을 제시하였다.

• 교육시설
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• 제12권5호
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• pp.47-56
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• 2005

Reports on population movement(2000-2030) by the National Statistical Office show that the number of elementary school age population will be decreased by 1.4million from 2005 to 2020. It will effect both school size and the policies for school facilities, which have focused on downsizing class as the high standard of OECD nations. As the unfolding evidence is emerging that a number of schools and classes will be emptied out by 2030. This study aims at developing a model for evaluating the validity of school establishment, which would help more reasonable decision-making for new school construction and the class extension in the existing schools. It classifies two different ways in founding a new school - school establishment in a residential developing site and school establishment for solving a overcrowd class. It proposes the assesment items and the methods for evaluating its validity. In the end, it suggests an assesment model which the district educational offices can use in the course of planning the student accomodations to schools and making decisions for new school construction and the class extension in the existing schools. This study would be expected to help the reasonable expenditure for school facilities and to restrict overbuilding of surplus classes.

• Journal of Forest and Environmental Science
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• 제32권4호
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• pp.377-383
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• 2016

We obtained a total of 36 GPS coordinates of the seven bat species of Rhinolophus ferrumequinum, Myotis ikonnikovi, M. nattereri, M. petax, Murina ussuriensis, Plecotus auritus, and Pipistrellus abramus. Characteristics of forests (forest type, age class, DBH class and crown density), terrain (aspect, slope and distance from mountain stream) and disturbance factors (distance from human residential areas and distance from cultivated areas) that bats have used as their habitats were revealed from the GIS analysis based on GPS coordinates of the 36 positions that bats were found. The bats-preferred forest type is broad-leaf forests (43%) with the trees of the 2th (31%) and 5th (31%) age class, the trees of sapling (36%) and large DBH class (31%), and sparse crown density (67%). Bats prefer the slop direction of the east (39%), the gradient below $15^{\circ}$ (61%), the ranges within 200 m from the mountain streams (92%), the ranges within 200 m near roads (89%), the ranges of 200-400 m from human residential areas (28%), and the ranges within 200 m from cultivated areas (36%).

• 아동학회지
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• 제18권2호
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• pp.131-148
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• 1997

The purpose of this study was to develop criterion scores for the Korean version of the Attachment Q-set. It further examined distribution of security of attachment scores of Korean infants and differences in attachment scores by the cultural background. The criterion scores of attachment security were developed by 8 judges who are knowledgable in attachment theory and research. They used the Q-set to describe behavior characteristics of ideally secure infants of 12 and 36 months of age. Distribution of the attachment scores was analyzed with 191 infants, compiled from 4 studies including infants selected for this study. The attachment security criterion scores developed for Korean infants correlated highly with the Waters' criterion scores (1987) for American infants, .90 for 12 months and .88 for 36 months of age. Correlations between attachment scores developed for 12-and 36-month-olds was .89. The attachment security scores of the Korean version was a little higher and more negatively skewed than scores calculated using the American criterion. There were significant differences in the security of attachment scores by socioeconomic background of the infants, but not with employment status of the mothers. Infants of nonemployed middle class mothers had significantly higher security of attachment scores than infants of nonemployed lower class mothers. Infants from lower class families had higher "difficulty" scores, and "enjoying physical contact" scores were higher among infants from the middle class.

• International Journal of Advanced Culture Technology
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• 제10권4호
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• pp.77-85
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• 2022

Today's universities have a keen interest in educational reform. The issue of population decline in college-age due to population decline is not new. Universities have been developing quantitatively for a long time and are now considering ways to survive rather than qualitative growth. Since the sharp decline in the school-age population due to the population decline has no clear solution immediately, universities are overcoming this crisis by creating many alternatives. Attracting international students is one of them. In this study, the effectiveness of photovoice was examined through the analysis of the case of the Korean-Japanese convergence cartoon class. The photo-voice method has sufficient potential as a teaching method for foreign convergence classes and can be expected to play a role as a teaching method suitable for students participating in convergence classes with different social, cultural, and linguistic backgrounds. In particular, in the convergence class, since participating students generate research materials through photo production, it can be a tool for inner exploration necessary for webtoon production and a tool for narrative inquiry for storytelling. It is expected that expanding the understanding and use of photo voice will have the methodological value of convergence classes. In addition, the teaching method using photo voice produced in the composition of photos and stories is likely to be used as an appropriate tool for convergence classes for students with different social, cultural, and linguistic backgrounds.

• Journal of Preventive Medicine and Public Health
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• 제35권1호
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• pp.57-64
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• 2002

Objective : To explore the relationship of social class and health behaviors with self-reported morbidity. Methods : The 1995 General Household Survey in Korea was used to investigate self-reported morbidity. Logistic regression was used to examine the relationship of social class and health behaviors with self-reported chronic disease and perceived general health. Results : For chronic disease and general perceived health, age adjusted odds ratios were higher for manual workers, lower-educated group as well as those in the lower income group; this held true for both men and women. Health behaviours had little effect or the relationship between social class and morbidity. The relationship between health behaviors and morbidity was very weak. The lower social class expressed higher levels of negative health behaviors, although this relationship appeared to be very weak in Korea. Conclusions : This study suggests that an understanding of health differentials that addresses the issue of social inequalities in Korea is required.