• Journal of the Korean Society of School Health
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• v.6 no.1
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• pp.58-68
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• 1993

This study was designed to grasp the knowledge and practice the level about visual impairment protective care of the primary school students and also analyse the state of visual impairment. The subjects of this study ware 347 students composed of 456 boys and 391 girls in primary school students. The data were collected by questionaire developed for the purpose of this study which has been made through studying references. These were carried out from the 10th to 30th of June 1992. Analysis of the data was done utilizing SPSS for percentage, mean, S.D., T-test., ANOVA and Pearson's Correlation Coefficient. The major results obtained from this study were as follows: 1. The level of the knowledge about visual impairment protective care was in intermediate range (mean on 20 point scale of 12.34, with O=definitely no), but low in aspects of preventive care for overwork of eye (mean on 5 point scale of 2.67). 2. The level of the practice about visual impairment protective care was intermediate range (mean on 20 point scale of 12.34, with O=definitely no), but low in aspects of preventive care for overwork of eye (mean on 5 point scale of 2.58). 3. Significant variables influencing knowledge of visual impairment protective care were sex (p<0.01) and grade (p<0.001). 4. Significant variables influencing practice of visual impairment protective care was living area (p<0.01). 5. Correlation between knowledge and practice: Those who have more knowledge score have more practice score (p<0.001). 6. vision impairment state 1) Student with subnormal in 0.9 or less were 26.3% in left eye and 28.4% in right eye. 2) Student with subnormal in 0.6 or less were 11.9% in left eye and 10.9% in right eye. 7. Vision impairment programs 1) Males are slightly higher in the degree of visual impairment than females. 2) Visual impairment were increased in accordance with the increase of grade. 3) Urban students are higher in the degree of visual impairment than rural students, but these seem to have no statistical meaning.

• Journal of the Korean Society of School Health
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• v.28 no.2
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• pp.127-138
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• 2015

The purpose of this study was to examine the relationship of bully/victim experiences and bioethics of 5th and 6th graders. Participants were 326 elementary school students. Methods: The data was collected from 1th to 30th October, 2014 in G City. Data were analyzed using descriptive statistics, t-test, ANOVA, Pearson's correlation and multiple regression and Scheff$\acute{e}$ post-hoc analysis by SPSS 18.0. Results: First, in regard to bioethics, significant factors were liking for growing plants (p<.001), emotions after killing insects (p<.001) and the number of friends (p=.003). In regard to bullying experiences, significant factors were gender (p=.021), religion (p=.026), participation in religious activity (p=.019), liking for growing plants (p=.009), insect killing experience (p=.009). The bioethics score of the victim group (2.70 point) were higher than the bully group (2.49 point). The relationship between bully/victim experiences and bioethics was negative. The factors affecting bioethics were liking for growing plants (${\beta}=.159$, p=.004), the number of friends (${\beta}=.124$, p=.030), experiences of being bullied (${\beta}=.352$, p<.001), emotions after killing insects (${\beta}=-.135$, p=.011). Conclusion: Therefore, based on the results of this study, it is required to develop rich learning content and a variety of teaching and learning models for bioethics. Efficient bioethics program would help elementary school students have a higher bioethics awareness. The entire society and families should wake up to the evil effects of school bullying and make concerted efforts to root it out with a sense of responsibility.

• Journal of the Korean Society of Clothing and Textiles
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• v.25 no.2
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• pp.217-227
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• 2001

The purpose of this research was to investigate the difference in fabric preference of formal wear attire between the Korean and American female consumers. For such purpose, fabrics which were used in the womens formal wear market of Korean(n=25) and U.S.A.(n=25) in the 1999 spring/summer season were collected from different fabric converters of the two countries. The respondents were comprised of 50 Korean and 50 U.S.A. female volunteers in the age group of 20s and 40s. A 5 point Likert Scale was used to evaluate the degree of the \"like\" preference of fabrics. T-test and Spearmans rho statistics were conducted for data analysis. The followings are the results. 1. Korean 20s and American 20s preferred Korean fabrics but Korean 40s and American 40s preferred U.S.A. fabrics. 2. Generally, the 20s preferred greyish or tone down color, whereas the 40s preferred both greyish and colorful fabrics. 3. Koreans preferred melange colored fabrics as well as solid color fabrics. 4. Americans liked knit fabrics as well as woven fabrics for formal wear and 20s liked compact density fabrics compared to the 40s age group.age group.

• Journal of Korean society of Dental Hygiene
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• v.12 no.1
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• pp.157-165
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• 2012

Objectives : The purpose of this study was to examine the professors, who teach the dental hygiene program in Korea, on the awareness of the research ethics education check. And attempt to provide and promote a basic foundation for future research ethics education Methods : Questionnaire survey was carried out targeting 119, who teach the dental hygiene program. The collected data was performed frequency & percentage, independent t-test and one-way ANOVA, Pearson's correlation coefficient and multiple regression. Results : 1. As recognition about research ethics education needs, they expressed the biggest recognition that research ethics education is required($3.66{\pm}0.57$) 2. Regarding the correlation between students needs research ethics education and interested research ethics education had a statistically significant correlation of r=0.381 which was the highest correlation factor. 3. Research ethics education taking institutions, 39.4% respondents experienced the biggest national research institutes. 4. Between general characteristics and research ethics education recognition level, they were statistically significantly different with age and major course(p<0.05). 5. The affecting factors on the research ethics education were teaching career and number of articles published as the first author, explained 12.8%(p<0.001). Conclusions : Research ethics education is desperately needed. Therefore I will insist the case based approach in the research ethics education program with the format of a stand course.

• Journal of the Korean Society of Food Culture
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• v.16 no.5
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• pp.407-415
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• 2001

The purposes of this study were to assess th importance and performance of food suppliers and to explore the ways to improve the school foodservice purchasing management. The questionnaire regarding purchasing was composed of two parts. The part one consisted of questions on general characteristics of dieticians and school foodservice operations, and the part two was composed of questions on the importance & performance of food suppliers. Completed questionnaires were received from 286 dieticians of elementary school foodservice operations in Seoul. Statistical data analysis was completed using the SPSS/win for descriptive and t-test. In dieticians' demographic data, 36.6% were over 30 years old, 32.4% were $28{\sim}29$ years of age and 31.0% were below 27years old. Most of the respondents(68.3%) had overall working experiences less than 58 months and almost half of them(56.3%) were married. The school foodservice operations which employed a chef were 50.3%. The food suppliers' attributes that were recognized by the dieticians with high value of mean importance scores were: food quality, maintenance of food quality, accuracy in filling orders, quality of delivery facilities, on time delivery and packaging. Average mean score for importance was 4.33('important') out of 5 and mean score for performance was 3.50('so-so') out of 5. By IPA techniques, the attributes that deserve higher attention were those that ranked high in importance and low in performance(Quadrant A). The coordinates in Quadrant A were geographical location of supplier, maintenance of food quality, provision of information on cost variation and salesman's knowledge.

• Journal of the Korean Society for Heat Treatment
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• v.13 no.4
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• pp.224-230
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• 2000

Garbon steel(SM35C) was gas nitrocarburized at $580^{\circ}C$ in $55%N_2-40%NH_3-5%CO_2$ mixed gas atmosphere, and then the steel was induction hardened at $850^{\circ}C$. The microstructure of gas nitrocarburized surface layer was observed by optical microscope and SEM. The phase analysis was carried out by X-ray diffraction method. The mechanical properties of gas nitrocarburized SM35C steel was evaluated by hardness, wear and fatigue test. The thickness of compound and diffusion layer were increased with increasing the gas nitrocarburizing time and the densest compound layer was obtained at 3 hours gas nitrocarburizing time. In case of 15sec induction hardening after gas nitrocarburizing, the surface hardness was decreased from 800Hv to 630Hv owing to the decomposition of compound layer, but wear resistance was increased because of increased hardness of diffusion layer. The fatigue strength of induction hardened steel after gas nitrocarburizing, $58kgf/mm^2$, was higher than $41.5kg/mm^2$ of gas nitrocarburized steel and $45kg/mm^2$ of induction hardened steel, respectively.

• Restorative Dentistry and Endodontics
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• v.41 no.1
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• pp.1-5
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• 2016

Objectives: The purpose of this study was to assess the ability of ProTaper Gold (PTG, Dentsply Maillefer) in maintaining the original profile of root canal anatomy. For that, ProTaper Universal (PTU, Dentsply Maillefer) was used as reference techniques for comparison. Materials and Methods: Twenty simulated curved canals manufactured in clear resin blocks were randomly assigned to 2 groups (n = 10) according to the system used for canal instrumentation: PTU and PTG groups, upto F2 files (25/0.08). Color stereomicroscopic images from each block were taken exactly at the same position before and after instrumentation. All image processing and data analysis were performed with an open source program (FIJI). Evaluation of canal transportation was obtained for two independent canal regions: straight and curved levels. Student's t test was used with a cut-off for significance set at ${\alpha}=5%$. Results: Instrumentation systems significantly influenced canal transportation (p < 0.0001). A significant interaction between instrumentation system and root canal level (p < 0.0001) was found. PTU and PTG systems produced similar canal transportation at the straight part, while PTG system resulted in lower canal transportation than PTU system at the curved part. Canal transportation was higher at the curved canal portion (p < 0.0001). Conclusions: PTG system produced overall less canal transportation in the curved portion when compared to PTU system.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.10
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• pp.5274-5280
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• 2013

The aim of this study is to analyze the general satisfaction of the commercial areas near Cheonan central bus terminal and the rail-station and to extract various environmental factors of the city center which give effect to the user satisfaction of commercial area. As the result of the analyses, the environmental factors of the city center make a difference between the commercial areas of Cheonan central bus terminal and of the station in the aspects of user satisfaction. The user satisfaction of the commercial areas is appeared highest in 'comfort of walking environments' and 'convenience of commerce business transaction' which were environmental factors of the city center. For reactivation of the commercial area near Cheonan rail-station are needed improvement of walking environments and relocation of facilities as complex mall and bank etc.

• Journal of Home Health Care Nursing
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• v.2
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• pp.60-76
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• 1995

The purpose of this study was to analysis level on family caregiver's burden for the elderly with senile dementia in a rural area and to choose priority care group, thereby facilitating the development of interventions to reduce the caregiver's burden. For this purpose, data were collected by questionaire from June 10 to October 8, 1994. The instruments for data collection were Caregiver Burden Inventory by Novak(1989) and Zarit et al(1982), severity of dementia by Hughes Scales (1982), ADL by Lawton (1971), patients' family caregiving activity by pre-survey and reference review(Lee, 1993 ; Jang, 1990 ; Yoo, 1982). The subjects were 60 family caregiver of senile dementia in a rural area. The data was analysed by the use of t-test, ANOVA, correlation and multiple regression. The results were as follows : 1. Total burden was evaluated over average, the mean of family burden was 61.24. 2. Significant variables which were correlated to the family caregiver's burden were the severity of dementia(F=30.52, p<0.001), ADL(F=5.43, p<0.01), PADL(F=6.14, p<0.01), caregiver's health status(F=6.05, p<0.01), a view of patient's prognosis(F=4.08, p<0.05), the number of hours per day spent on caregiving(F=19.64, p<0.001), level of intimacy of caregiver and patients(F=7.16, p<0.001), the frequency of caregiving activity(F=5.31, p<0.01). 3. ADL was the most important predictor to family caregiver burden(R2=0.6611). In addition to this, the severity of dementia, level of intimacy of caregiver and patient, relationship with the patient accounted for 79% of family caregiver burden. 4. The criteria of priority care group were as follows ; the mean of family caregiver burden was above 58, above of moderate ADL, the number of hours per day spent on caregiving above of 8 hours, above of moderate dementia. By the the severity of dementia, number of priority care group, mild dementia was 10(43.4%), moderate dementia 23 (92.0%), sever dementia 12(100.0%).

• Journal of Home Health Care Nursing
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• v.19 no.1
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• pp.74-82
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• 2012

Purpose: The aim of this study is to evaluate the effects of community based chronic disease management program for managing hypertension and diabetes mellitus. Method: The subjects of this study were 1,000 clients, who participated in a city community based chronic disease management program. The data were collected by a phone survey directly, and selected from DB of community based chronic disease management program, indirectly. The data were analyzed by the STATA program, using descriptive statistics, t-test, and Multiple regression analysis. Results: The mean score of knowledge of hypertension was 4.33 and diabetes mellitus was 2.52. The affecting factors of knowledge of hypertension were the clinic visiting point and blood sugar. However, the affecting factors of knowledge of diabetes mellitus was core lab point, diastolic blood pressure, and blood sugar. Conclusion: the results of this study showed that knowledge of hypertension increased with higher level of education, and younger ages, while knowledge of diabetes mellitus increased with higher level education, more core lab point, younger ages, and in males. Therefore, to control the chronic diseases more effectively in a community, it is important to develop a more systematic education and self- managing programs, using collaboration of health centers and local clinics.