• Imaging Science in Dentistry
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• 제40권4호
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• pp.159-163
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• 2010

Purpose : This retrospective study was performed to investigate the prevalence of the idiopathic osteosclerosis (IO) in Korean malocclusion patients according to age, sex, and the Angle's classification of malocclusion. Materials and Methods : This study consisted of 2,001 randomly selected patients from the Department of Orthodontics at the Gangneung-Wonju National University Dental Hospital, Korea. The prevalence of IO in Korean malocclusion patients was recorded using their panoramic radiographs, and the following parameters were surveyed; age, sex, and the Angle's classification of malocclusion. The chi-square test was analyzed to determine the statistical significance of differences in the prevalence of IO between age, sex, and the Angle's classification of malocclusion. Results : The prevalence of IO in the jaws was 6.7% in a total of 2,001 examined orthodontic patients. The majority of IO was found in the mandible (96.58%). The 30-39 age group showed the highest prevalence of IO (9.60%). There was a higher prevalence in females (6.89%) than in males (6.45%). The prevalence of IO in Angle Class I group (7.07%) was the most frequent, followed by Angle Class II group (6.72%), and Angle Class III group (6.40%). However, there was no statistical significance in sex and Angle's classification of malocclusion. Conclusion : The prevalence of IO in malocclusion patients showed the differences between various age groups and most of them were found in the mandibular posterior area. However, sex and the type of malocclusion are not to be considered as a contributing factor of IO.

• 한국의류학회지
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• 제8권3호
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• pp.43-56
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• 1984

The purpose of this present study is not only to investigate mutual relationship between general values and clothing behaviors, but to analyize the differences in clothing behaviors in view of socio-economic backgrounds, such as professions, social classes, educational levels, monthly income, etc. For the measurement of the general values, a total of 45 questions were made use of from both part I and part II of 'The study of General Values' jointly developed by Allport-Vernon-Lindzey, while for the measurement of the clothing behaviors were used questions selected from 'The clothing variables Inventory' developed by Creekmore and from those previously used in our country for the same purpose. Data were obtained from 460 Persons and the selected sample was composed of 238 Persons from the upper class and of 222 persons from the lower class. The former class is mainly represented by government officials, doctors, company directors, professors, while the latter by factory workers, clerks, drivers. Analysis of the data in this present study reached its conclusions as follows ; 1. Among the general values valiables, the selected group in this study ranked, theoretical values' first, 'political values' 'econmic values', 'social values', aesthetic values', 'religious values' in that order, and also among the clothing behaviors variables it ranked in the following order ; economy' 'modesty' 'aesthetic' 'conformity' 'status symbol'. 2. A significant relationship between general values and clothing behaviors was found as follows ; there are negative relationships between 'theoretical values' and 'aesthetic', 'status symbol', between 'aesthetic values' and 'conformity', between 'social values' and 'status symbol', between 'political values' and 'conformity', on the one; there are positive relationships between political values' and 'status symbol', between religious values' and 'aesthetic', on the other, 3. In view of profession, it was found that a group of company directors placed the most importance upon 'status symbol', a group of factory workers upon 'economy', a group of drivers upon 'conformity' among the clothing behaviors. In light of social classes, 'economy' was given a high priority by the lower class, and 'status symbol' by the upper class, respectively. Considering educational levels, it was found that the highly educated class placed more emphasis on 'status symbol' and the lower educated class showed their preference to 'economy'. In view of monthly pay, 'conformity' was given a top priority by the middle class, and 'status symbol' by the upper class. 4. As a result of investigating the influence that one's age and marriage effect on clothing behaviors, significant differences were found among the three clothing motivations of 'aesthetic', modesty', 'status symbol'.

• Asian Pacific Journal of Cancer Prevention
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• 제15권14호
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• pp.5607-5609
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• 2014

Introduction: Although continuing education is necessary for practicing nurses, it is very difficult to organize traditional classes because of large numbers of nurses and working shifts. Considering the increasing development of mobile electronic learning, we carried out a study to compare effects of the traditional face to face method with mobile learning delivered as text messages by cell phone. Materials and Methods: Sixty female nurses working in our hospital were randomly divided into class and short message service (SMS) groups. Lessons concerning breast cancer screening were prepared as 54 messages and sent in 17 days for the SMS group, while the class group participated in a class held by a university lecturer of breast and cancer surgery. Pre- and post-tests were undertaken for both groups at the same time; a retention test also was performed one month later. For statistical analysis, the paired T test and the independent sample T test were used with SPSS software version 16; p<0.05 was considered significant. Results: Mean age and mean work experience of participants in class and SMS groups was $35.8{\pm}7.2$, $9.8{\pm}6.7$, $35.4{\pm}7.3$, and $11.5{\pm}8.5$, respectively. There was a significant increase in mean score post-tests (compared with pretests) in both groups (p<0.05). Although a better improvement in scores of retention tests was demonstrated in the SMS group, the mean subtraction value of the post- and pretests as well as retention- and pretests showed no significant difference between the 2 groups (p=0.3 and p =0.2, respectively). Conclusions: Our study shows that teaching via SMS may probably replace traditional face to face teaching for continuing education in working nurses. Larger studies are suggested to confirm this.

• 대한수학회지
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• 제59권3호
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• pp.571-594
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• 2022

Let D be an integral domain with quotient field K, Pic(D) be the ideal class group of D, and X be an indeterminate. A polynomial overring of D means a subring of K[X] containing D[X]. In this paper, we study almost Dedekind domains which are polynomial overrings of a principal ideal domain D, defined by the intersection of K[X] and rank-one discrete valuation rings with quotient field K(X), and their ideal class groups. Next, let ℤ be the ring of integers, ℚ be the field of rational numbers, and 𝔊f be the set of finitely generated abelian groups (up to isomorphism). As an application, among other things, we show that there exists an overring R of ℤ[X] such that (i) R is a Bezout domain, (ii) R∩ℚ[X] is an almost Dedekind domain, (iii) Pic(R∩ℚ[X]) = $\oplus_{G{\in}G_{f}}$ G, (iv) for each G ∈ 𝔊f, there is a multiplicative subset S of ℤ such that RS ∩ ℚ[X] is a Dedekind domain with Pic(RS ∩ ℚ[X]) = G, and (v) every invertible integral ideal I of R ∩ ℚ[X] can be written uniquely as I = XnQe11···Qekk for some integer n ≥ 0, maximal ideals Qi of R∩ℚ[X], and integers ei ≠ 0. We also completely characterize the almost Dedekind polynomial overrings of ℤ containing Int(ℤ).

• 보건의료산업학회지
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• 제11권1호
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• pp.131-142
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• 2017

Objectives : This study aimed to examine to relevance of socioeconomic class recognition and subjective health status of injured workers. Methods : We used data collected over 3years by the Panel Study of Worker's Compensation Insurance(PSWCI; 2015). Data was analyzed using the chi-square test and logistic regression using SPSS ver. 22.0 to verify the relevance between the socioeconomic class recognition and general characteristics of injured workers. Results : First, the income groups of first class, second class and third class were analyzed as being of lower socioeconomic class status, and the income group four class and five class was analyzed as being the middle-ower the socioeconomic class status. Second, the better the subjective health status, higher the perception of socioeconomic class status, as analyzed by Model 1 using only the parameters of socioeconomic status recognition and Model 2 and Model 3 using income class and general characteristics. Conclusions : Health and industrial accident policies are needed to improve awareness of socioeconomic class status of injured workers.

• 문화기술의 융합
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• 제9권5호
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• pp.431-441
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• 2023

좋은 수업은 수업을 구성하는 요소들이 하나의 체제로서 유기적 연관성을 갖는다. 수업의 목표는 학생들이 해당 과목의 교육내용을 충분히 이해한 뒤 이를 실제로 자신의 전문영역에 적용할 수 있는 능력을 함양하는 것이다. 따라서 이상적인 수업을 위해서는 학생들이 필요한 이론을 습득함과 동시에 이를 실질적으로 적용하도록 설계하는것이 필요하다. 우리는 수업을 진행하면서 늘 스스로 질문하기를 어떻게 하면 학생들을 위한 대단위 수업을 효과적으로 할 수 있을까를 연구한다. 이는 여러 전공 분야에 걸쳐 개설된 대단위 수업을 담당하는 많은 교수들의 고민이기도하다. 우리는 이렇게 대단위 수업을 효과적으로 할 수 있는 방안을 모색할 필요가 있는 시점에서 강의, 발제 및 조편성, 과제 부과, 조별 발표, 교수의 조별 발표지도, 강의 자료의 게시, 질문과 답변, 조별 발제에 대한 학생들의 피드백, 기말보고서 작성, 성적산출방식과 같은 다양한 요소들을 어떻게 설계하고 실행하는 것이 가장 효과적인지 연구하였다.

• Journal of Korean Dental Science
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• 제7권1호
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• pp.6-15
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• 2014

Purpose: The purpose of this retrospective study is to investigate the degree of coincidence between the peer assessment rating (PAR) index and American Board of Orthodontics objective grading system (ABO-OGS) in the assessment of orthodontic treatment outcomes of Class I malocclusion cases. Materials and Methods: The sample consisted of 26 Class I patients. The PAR index was used for evaluation of pre-(T0) and posttreatment (T1) casts, and the ABO-OGS for assessment of T1 casts. If there was a reduction in PAR scores from T0 to T1 of more than 30%, the label 'PAR+' was given to the case, and if not, it was labeled 'PAR-'. If the ABO-OGS was less than 27, the label 'OGS+' was given to the case and if not, it was labeled 'OGS-'. 'A PAR-only qualified group' (PAR+), 'ABO-OGS-only qualified group' (OGS+), 'both indices qualified group' (PAR+/OGS+), and 'both indices disqualified group' (PAR-/OGS-) were compared with a Wilcoxon rank-sum test, sensitivity/specifi city test and Spearman's correlation test. Result: PAR scores for T0, T1, and percentage reduction were 21.1, 6.4, and 65.9%, respectively, and 35.4 for ABOOGS. The distribution of the 'PAR+/OGS+', 'PAR+', and 'PAR-/OGS-' group was 19.3%, 76.9%, and 3.8%, respectively. The T0-PAR, T1-PAR and PAR point reductions for the 'PAR+' group were significantly higher than those of 'PAR+/OGS+' groups (23.1 vs. 15.6; 6.7 vs. 4.6; and 16.5 vs. 11.0; all P<0.05). However, the PAR-percentage reduction and treatment duration between the two groups were not statistically different (70.0% vs. 67.0%, P=0.4325; 24.1 months vs. 25.0 months, P=0.4057). The T1-ABO-OGS score for 'PAR+' group was significantly higher than that of the 'PAR+/OGS+' groups (38.2 vs. 24.0, P<0.001). Conclusion: Since the fraction of the 'PAR+/OGS+' group was less than 20% and there was no significant correlation between PAR-percentage reduction and T1-ABO-OGS, development of a new index system for the accurate evaluation of treatment outcome is needed.

• 대한간호학회지
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• 제36권7호
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• pp.1265-1273
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• 2006

Purpose: This study was to evaluate a virtual class, 'lifelong health care for women', for female university students. Method: The research design was one group pre-post design. A pretest and posttest were conducted to measure CMI, perceived health status, health promoting lifestyle, and knowledge related to women's health. The subjects of this study were 74 female students in 3 universities, and they were provided with the virtual class by K university consortium for 16 weeks. Data was analyzed by descriptive and paired t-test. Results: There were statistically significant differences in CMI (t=3.367, p=.001), perceived health status (t=-2.788, p=.007), and knowledge related to women's health (t=-10,432, p=.000) between the pretest and posttest. However, there was not a statistically significant difference in a health promoting lifestyle (t=-1.431, p=.157) between the pretest and posttest. Conclusion: These results suggest that a virtual class on lifelong health care for women is aneffective method in decreasing health problems, and improving perceived health status and knowledge related to women's health by female university students.

• 한국간호교육학회지
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• 제9권1호
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• pp.81-93
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• 2003

Purpose: The purpose of this study was to develop a PBL module in maternity nursing based on the clinical cases. A PBL module applied to maternity nursing class to test the effects on improving the learning ability of students. And it would be used for developing further PBL module even more perfectly. Method: We selected the concept of the PBL module which is based on the purpose of the contents of maternity nursing class and national test held by Korean Nursing Association. The module scenario was composed up of the cases of clinical practices and was also checked by clinical practice professionals as well as the nursing professionals in other colleges. We used this PBL module for the 20 second grade student nurses in K college for 6 weeks. Besides, we checked self-analyses on the PBL class, assessments done by students on the PBL class itself and on the academic adviser and analyzed the students' subjective statements on the PBL class . Results: The achievements of the experimental students given a PBL class, are better than those of the control group statistically. And the experimental group do their almost all learning planned actively for themselves and show their positive responses on the PBL class being helpful in practicing clinical cases. Conclusion: PBL class could be considered the method to fortify student nurses' abilities on adjusting themselves to clinical real situations through the learning planned by themselves. Afterwards it is necessary to activate PBL class in nurse education. Most of all, it is more important that nurse educators should recognize the values of this PBL class and try to apply it in reality.

• 한국의상디자인학회지
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• 제11권2호
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• pp.153-168
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• 2009

The purpose of this study was to identify the clothing attitude of Chinese students in korea according to gender, socio-economic level and resident period. The survey was conducted from October 30th to November 25th 2008, and 267 questionnaires were used for the analysis. Data were analyzed by factor analysis, T-test, ANOVA, Duncan's Multiple Range Test with SPSS 12.0. The results were as follows: 1. Most of Chinese students were middle-class Han race and they have been staying in Korea for 3 years. 2. Fashion leadership was classified as Innovation and Opinion leading factor; conformity as Nonconformity, Identification, and Norm consciousness; pursuit benefit as Practicality, Economy, and Aesthetic. 3. The Innovation factor was highly marked in female student group, the Opinion leading factor was higher in high-class group, and the pursuit benefit factor was significantly different between less than three years group and over three years group who have been in Korea. 4. We need to recommend best-design clothes for high-class Chinese female students who have been in Korea for over three years, and low-price clothes for less than 3 years.