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백하나,최원준,강상모 한국패션뷰티학회 2007 한국패션뷰티학회지 Vol.5 No.4
This study was designed to investigate what an effect Meridian massage widely practiced in the skin and fatness clinics gives to the control of women's lower body fatness. 8 woman students in the J beauty school in Seoul were selected as experimental group. After measuring their femoral or thigh circumference, 4 weeks of Meridian massage was practiced. Another 8 women who were not included in the experiment were selected as the control group. As the results of 4 week Meridian control on lower body fatness, P value of the variance analysis was over 0.05, meaning that there was not a statistical significance. But the measurement of femoral or thigh circumference decreased from 55.85 cm to 53.34 cm, indicating that more often Meridian massage was practiced, the more lower body fatness decreased. This suggests that Meridian massage gives a positive effect to lower body fatness control. In a survey after the experiment, more than 88% of the survey participants answered that Meridian massage was effective to removal of edema, decrease in thigh circumference, and deep sleep, indicating that satisfaction with Meridian massage was high. Based on the findings of this study, it is necessary to study further on quantifying the effect of Meridian massage, which is practiced just to control lower body fatness.
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특성화고등학교 보통교과 교사의 조직몰입과 개인 및 조직 변인의 위계적 관계
백하나,나승일 한국농·산업교육학회 2017 농업교육과 인적자원개발 Vol.49 No.4
The purpose of this study was to investigate the organizational commitment and the hierarchical relationship between the individual and organizational variables of general subjects teachers in specialized vocational high schools. The subjects of this study were general subject teachers in specialized vocational high schools. The samples were randomly sampled from 465 teachers from 31 schools by stratification rate sampling according to school location. The research questionnaire consisted of measuring tools such as organizational commitment, job satisfaction, relationship oriented culture etc validity and reliability are verified, and also include survey items on gender, career experience etc. As for data analysis, HLM 6.0 for Windows program were used to conduct the hierarchical linear model(HLM). The main results of this study are as follows. Firstly, teachers' organizational commitment level was average moderate, and the rate of explaining the individual variables considered in the study was about four times higher than that explained by the organizational variables. Secondly, Among the organizational variables, the establishment type and the relationship oriented culture of the specialized vocational high school have a significant effect on the level of organizational commitment of the teacher and among the personal variables, teachers' vocational high school work experience, task importance and job satisfaction have significant effects on organizational commitment level. Thirdly, in the interaction of individual and organizational variables, it was found that the importance of task and principal's transformational leadership were effective and job satisfaction, type of school establishment and continuous learning opportunities were effective. 이 연구의 목적은 특성화고등학교 보통교과 교사의 조직몰입 수준을 측정하고 관련된 개인 및 조직 변인과의 위계적 관계를 구명하는 데 있었다. 모집단은 특성화고등학교에서 보통교과를 가르치고 있는 교사들이었다. 표본은 우선 학교소재지에 따라 층화 비율표집으로 31개교로부터 465명의 교사를 무선 표집하였다. 조사도구는 타당도와 신뢰도가 검증된 조직몰입, 직무만족 및 관계지향문화 측정도구들과 성별, 교직경력 등에 대한 조사문항으로 구성한 설문지를 이용하였다. 자료 분석은 HLM 6.00 for Windows 프로그램을 이용하여 위계적 선형모형 분석(HLM)을 실시하였다. 주요 연구 결과는 다음과 같다. 첫째, 교사들의 조직몰입 수준은 평균적으로 보통이고, 연구에서 고려된 개인 변인에 설명되는 비율이 조직 변인에 의해 설명되는 비율보다 약 4배 높은 것으로 나타났다. 둘째, 조직 변인 중 소속 학교의 설립유형과 관계지향문화가, 개인 변인 중 특성화고 교직경력, 과업중요성, 직무만족이 특성화고등학교 보통교과 교사의 조직몰입 수준에 유의미한 영향을 미쳤다. 셋째, 개인 및 조직 변인의 상호작용에 있어서 과업중요성과 학교장 변혁적 리더십, 직무만족과 학교설립유형 및 지속적 학습기회가 효과가 있는 것으로 확인되었다.
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콜라겐과 식초의 복합식이가 여성의 혈액 및 피부 거칠기 개선에 미치는 효과
백하나 ( Ha Na Baek ),강상모 ( Sang Mo Kang ) 한국미용학회 2010 한국미용학회지 Vol.16 No.4
This research was able to reach the following conclusions through the blood analysis and skin roughness tests to prove the effects improving the blood and skin roughness by each single dietary treatment of collagen and vinegar, and the complex dietary treatment of collagen and vinegar for the women in their 50s-60s whose aging processes have been accelerated. First, as the results of having compared the general characteristics in each group, there were no substantial differences between each group. Second, in the nutrient intake status, we were able to ascertain that the collagen intake excluding the factors related to the dietary treatment has an effect on the blood and skin roughness, because there were no substantial differences in any nutrient intake of either the experimental group or the control group before and after the test. Third, in the blood analysis, collagen showed the changes which collagen+vinegar group increased by 2.4 times more than the changes which the collagen density in blood of the collagen group increases (p<0.01), albumin showed the increases 1.5 times (p<0.001), ferritin showed the changes 2.9 times and showed the changes which collagen + vinegar group increased by 1.3 times more than the changes which the ferritin density in blood of the vinegar group increases (p<0.001). Fourth, as the result of the skin roughness test, we ascertained that the complex dietary treatment has a better effect improving the skin roughness than the single dietary treatment.
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콜라겐과 식초의 복합식이가 여성의 목 피부 개선에 미치는 효과
백하나 ( Ha Na Baek ),장순남 ( Soon Nam Jang ),강상모 ( Sang Mo Kang ) 한국미용학회 2012 한국미용학회지 Vol.18 No.1
This study aims to examine an effect of multiple dose of collagen and vinegar on the improvement of woman`s neck skin. Skin roughness, skin color, melanin and erythema level were measured to comprehend the change of neck skin, so the multiple dose effects of collagen and vinegar were compared and analyzed. In the analysis of neck skin roughness & skin color average variation by increase %, the collagen+vinegar group showed variation of skin roughness with 19.7% (p=0.989), skin color with 4.6% (p=0.672) more than collagen group and vinegar group so it showed the effects of neck skin roughness and skin color changes. In the analysis of the variation of neck melanin levels, though it was not significant but the collagen+vinegar group showed 1.3fold more decreased (p=0.950) in the central neck point part than variation of decreased melanin levels of collagen group (p=0.950). In the analysis of the variation of neck erythema levels, the collagen+vinegar group showed 1.5fold more decreased (p=0.968) in the central neck point part than variation of decreased melanin levels of collagen group.
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콜라겐과 식초의 복합식이가 여성의 피부색 개선에 미치는 효과
백하나 ( Ha Na Baek ),강상모 ( Sang Mo Kang ) 한국미용학회 2011 한국미용학회지 Vol.17 No.1
This research was able to reach the following conclusions through skin color tests to prove the effects improving skin color by each single dietary treatment of collagen and vinegar, and the complex dietary treatment of collagen and vinegar for the women in their 50s-60s whose aging processes have been accelerated. In the results of analysis of facial skin color average variation by increase %, the collagen+vinegar group showed variation of skin color with 8.44%, as the effects of skin color changes in the added value of collagen group and vinegar group .In the analysis of variation in facial melanin levels, the collagen+vinegar group showed 2.9fold more decreased in the forehead part than variation of decreased melanin levels of collagen group, and the left eye point decreased 1.17fold, right eye point decreased 1.1fold, left cheek decreased 1.17fold, and right cheek and chin decreased each 1.5fold, 1.13fold more which melanin levels of vinegar decreased. Therefore, it is confirmed that complex diet of collagen with vinegar made that skin color brightened and skin pigmentation improved more than single dose. In the analysis of variation in facial erythema level, the collagen+vinegar group showed 1.3fold more decreased in the forehead part than variation of decreased erythema levels of collagen group, and left eye point decreased 1.4fold, right eye point decreased 1.3fold, left cheek decreased 1.3fold, and chin decreased 1.2fold and right cheek decreased 1.2fold more than the vinegar group which variation of erythema level decreased. Therefore, it is confirmed that multiple dose of collagen with vinegar made that skin color brightened and skin erythema improved more than single dose.
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전창준,황하나,정영훈,윤지선,남중희,조정호,백종후,임종봉,남산,김응수 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.63 No.9
0.72Pb(Zr0.47Ti0.53)O3-0.28Pb[(Zn0.45Ni0.55)1/3Nb2/3]O3 (0.72PZT-0.28PZNN) thick films wereprepared by using a tape casting method to develop new materials with high energy-density applicableto energy-harvesting devices. The piezoelectric strain constant (d33), dielectric constant("T33/"0), piezoelectric voltage constant (g33) and transduction coefficient (d33·g33) of the films wereaffected by the sintering temperature. These results could be attributed to the crystal structure,microstructures and secondary phases. However, the dielectric loss (tan) of the films was notchanged remarkably with increasing sintering temperature. Typically, a d33 of 452 pC/N, εT33/ε0 of 1444, d33·g33 of 20,340 × 10−15 m2/N and tanδ of 0.15% were obtained for the films sintered at 1050 ℃ for 1 h. The power generation performance of the piezoelectric unimorph cantilever wasassessed to demonstrate the feasibility of the 0.72PZT-0.28PZNN piezoelectric thick film. Also,theoretical models were employed to predict the resonance frequency of the unimorph cantilevergenerator, and the predicted values were compared with experimental data.
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