• 한국식생활문화학회지
• /
• 제15권5호
• /
• pp.368-378
• /
• 2000

This study was conducted to assess dietary intake and quality obtained by 24-hour recall method between Korean-Chinese in Yanbian, China(Korean-Chinese) and Koreans in Kuri, Korea(Koreans). The subjects consisted of 730 Korean-Chinese and 696 Koreans. Mean daily energy intake of Korean-Chinese was 1,788kcal and that of Korean was 1,844kcal. Proportions of energy intake from carbohydrate, fat, and protein were 62.6: 16.9: 14.2 for Korean-Chinese and 65.4: 16.3: 14.4 for Koreans. Nutrient intake levels of Koreans were higher than those of Korean-chinese in most nutrients. Calcium and vitamin $B_2$ intakes as percent of Korean RDA were less than 60% in Korean-Chinese. Koreans consumed calcium and vitamin A in the level less than 80% of Korean RDA. Iron intake level of Korean females was less than 75% of Korean RDA. Korean-Chinese consumed 90.4% of food from plant origin, and Koreans consumed 82.5% of food from plant origin. Mean dietary diversity score(DDS) of Korean-Chinese, $3.00{\pm}0.39$, was significantly lower than that of Koreans, $3.73{\pm}0.76(p<0.05)$. Mean dietary variety score(DVS) of Korean-Chinese, 13.6, was significantly lower than that of Koreans, 20.1(p<0.001). According to these results, some adults in the both Korean-Chinese and Koreans did not consume enough nutrients, especially calcium and vitamin $B_2$ intake for Korean-Chinese and calcium and vitamin A intake for Koreans. Dietary qualities of Korean-Chinese subjects and Korean females were not adequate. In the future, further research to promote dietary quality of Koreans including Korean-Chinese must consider the results of this study.

• Elastomers and Composites
• /
• 제35권2호
• /
• pp.122-131
• /
• 2000

본 연구에서는 화학적 표면처리에 따른 카본블랙의 구조 변화가 카본블랙/고무 복합재료의 경화거동 및 tearing energy ($G_T$)에 어떠한 영향을 주는가에 대하여 관찰하였다. 실험적 결과를 통하여, 극성 및 무극성 용액으로 화학적 표면 처리한 카본블랙은 극성 또는 무극성 관능기의 발달로 카본블랙의 물리적 구조의 변화를 가져 왔다. Kissinger 식으로부터 얻은 카본블랙/고무 복합재료의 경화 거동은 경화 활성화 에너지 (cure activation energy, Ea)와 진동 인자 (frequency factor, A)가 분산력이 좋은 시편에서 감소하여 결과적으로 높은 반응성을 나타내는 것을 볼 수 있었다. 한편, 염기성 용액으로 처리한 BCB와 무극성 용액으로 표면 처리한 NCB는 충전재로 사용된 카본블랙/고무 복합재료의 기계적 물성 중 tearing energy를 증가시켰다. 이러한 결과는 분산력 또는 agglomerate의 발달, 표면 관능기, 기공 부피 (void volume), 그리고 카본블랙/고무 복합재료의 가교밀도 (cross-linking density)등으로 설명될 수 있었다.

• Elastomers and Composites
• /
• 제35권2호
• /
• pp.98-105
• /
• 2000

화학적 표면처리에 따른 카본블랙의 표면 관능기와 표면 자유에너지를 FT-IR과 접촉각 측정법을 이용하여 각각 관찰하였다. 산성과 염기성 용액으로 표면 처리한 카본블랙을 분석한 결과, 표면 관능기가 표면 자유에너지의 극성요소에 크게 영향을 미치는 것을 확인하였다. 반면에 무극성 용액으로 표면처리한 NCB와 염기성 용액으로 처리한 BCB의 경우 표면 자유에너지의 London 비극성 요소의 증가를 보이며 이에 따라 카본블랙/고무 복합재료의 경도, 파단신율, 그리고 인장강도와 같은 기계적 물성이 증가하는 것을 볼 수 있었다. 특히, 접촉각 측정을 통해 얻은 표면 자유에너지의 London 비극성 요소가 복합재료의 인장강도와 상관관계가 있음을 확인할 수 있었다. 이는 카본블랙의 London 비극성 요소가 카본블랙/고무 복합재료의 기본적인 기계적 물성에 크게 기여한다고 사료된다.

• 한국콘텐츠학회논문지
• /
• 제18권1호
• /
• pp.241-249
• /
• 2018

본 연구는 핵심기본간호술 교육에서 또래교수법 프로그램의 활용이 간호학생들의 핵심기본간호술 수행력, 수행자신감, 그리고 학습만족도에 미치는 효과를 확인하기 위해 시도되었다. 2016년 3월부터 6월까지 C대학 간호학과 3학년에 재학중인 간호학생 148명(실험군 75명, 대조군 73명)이 참여하였다. 또래교수법 프로그램을 적용한 결과 실험군의 학습만족도, 유치도뇨 및 단순도뇨의 수행력과 수행자신감은 대조군보다 통계적으로 유의하게 높았으나, 경구투약의 수행력 및 수행자신감은 유의한 차이를 보이지 않았다. 이를 통해 또래교수법 프로그램이 학습자의 핵심기본간호술 교육효과에 긍정적으로 작용함을 알 수 있었으며, 급변하는 국내 간호교육 현장에서 간호학생들의 핵심기본간호 능력을 향상시키기 데 유용하게 활용될 수 있을 것이다.

• 한국보건간호학회지
• /
• 제18권1호
• /
• pp.178-186
• /
• 2004

The purpose of this study was to analyze the work of visiting health care providers in public health centers. A descriptive analysis of self-records for work data from 875 visiting health care providers working in 242 public health centers in South Korea was done. The results of the study are as follows: 1. The number of households for each visiting health care provider ranged from under 100 households to over 500 households. 2. Low performance was found for several items on the work list for visiting health care providers. 3. There were significant differences in the work performance of visiting health care providers between nurses and nursing assistants. 4. There were significant differences in the work performance of visiting health care providers according to region. In conclusion. work performance of visiting health care providers was low and differed according to type of occupation and region. This study suggest the need for further studies which analyse the quality of visiting health care providers and services, and the visiting health care system.

• 대한간호학회지
• /
• 제46권6호
• /
• pp.793-803
• /
• 2016

Purpose: Developmental care has been recognized as a very important component for the development and health promotion of preterm infants. However, research on how to assess developmental nursing competency has not been studied as expected. This study was done to develop and evaluate a new scale to measure nursing competency for developmental support of preterm infants. Methods: Concept analysis was done with using the Hybrid model of Schwartz-Barcott and Kim (2000), from which a preliminary new scale (30 items) was developed. To test the validity and reliability of the new scale being developed, data were collected from 122 NICU nurses at 4 hospitals in 3 cities in the Republic of Korea, from December, 2014 to March, 2015. Results: The final version of the Developmental Support Competency Scale for Nurses (DSCS-N) caring for premature infants was a 4-point Likert type scale, consisting of 19 items, and categorized as 6 factors, explaining 62.5% of the total variance. Each of the factors were named as follows; 'environmental support' (4 items), 'parental support' (3 items), 'interaction' (3 items), 'critical thinking' (3 items), 'professional development' (3 items), and 'partnership' (3 items). The Cronbach's ${\alpha}$ coefficient for the scale was .83 and the reliability of the subscales ranged from .60~.76. Conclusion: The psychometric evaluation of the new scale demonstrated an acceptable validity and reliability. Findings indicate that the DSCS-N can be used as the tool to test the effect of educational programs for nurses and contribute to advance developmental care for preterm infants.

• 가정간호학회지
• /
• 제13권1호
• /
• pp.5-15
• /
• 2006

Purpose : This study was done to examine the home care service provided by home care nurses and the level of client satisfaction in community. Method : Data were collected from 120 clients who received the home care service at the community home care service center in Pusan from 2th May. 2003 to 31th May 2003. The tool for measurement of satisfaction was composed of 16 items and was 4 score scale by Kim. Data were analyzed by using SPSS/WIN 10.5 program. Result: 1) 67.5% among 120 clients was over sixty years old and 30.6% of clients received home visits 20 times by home care nurse. 2) The total number of home care services was 15,783. And most of the clients received therapeutic nursing care. 3) The mean score of satisfaction on provided home care services was 3.31, among 16 items, "The home care nurses kept up the secret of patients and family" was the highest($3.67{\pm}0.48$). the total level of satisfaction of home care services was very high, with mean score $3.31{\pm}0.32$. Conclusion : The satisfaction level of home care services was very high. so we can expect that the prospect of home care services is very challengeable. Therefore we should try to expand the service recipients with promotional education to assure close ties with the public health centers for the continuous home care service linking and make more efforts to improve the quality of the service.

• 보건교육건강증진학회지
• /
• 제17권2호
• /
• pp.111-124
• /
• 2000

The objective of this study is to find the most effective educational method on Sex and AIDS/HIV among young people in Korea. The number of people with HIV amounts to 1,224 as of Sep. 2000, and is increasing continuously, especially among young people(National Institute of Health, 2000). In setting up the policy of health education on Sex and AIDS, the criteria should be the effectiveness. By two-stage cluster sampling, 4,713 students were selected from among the 19,093 students from 44 middle and high schools and divided into three groups and taken the education with three different methods( 〈lecture with slides show〉, 〈lecture without any material〉 and 〈lecture through broadcasting system〉) by the same lecturer with the same contents for about 50 minutes. To compare the effects of education by methods, the tests on the AIDS knowledge, AIDS attitude on AIDS and Sexuality attitudes with self-administered questionnaire were implemented three times, that is, ‘before’, ‘right after’ and ‘2 weeks later’ of the education. As to the degrees of change of AIDS knowledge, AIDS attitudes, Sexuality attitudes and subjective evaluation of the education, 〈lecture with slides show〉 was the most effective, 〈lecture without any material〉 was the second and 〈lecture through broadcasting system〉 was the least effective, respectively. In the cost-effectiveness analysis using the results of this study, 〈lecture with slides show〉 turned out to be the most effective, and 〈lecture through broadcasting system〉 was the second and 〈lecture without any material〉 was least effective. From these results, it is suggested that 〈lecture with slides show〉 is more effective health educational methods on Sex and AIDS than 〈lecture without any material〉 or 〈lecture through broadcasting system〉.

• 한국음향학회지
• /
• 제35권6호
• /
• pp.445-451
• /
• 2016

나노기술의 실제적인 응용을 위해 응집되지 않은 나노입자 상태를 얻는 것이 매우 중요하다. 나노입자를 사용하는 제품의 기능성을 향상시키기 위해, 그들의 합성 과정에서 입자 크기 분포의 더 정밀한 제어가 요구된다. 그러나 합성된 나노입자들은 물리적 혹은 화학적인 이유로 응집되기 쉬워 나노입자의 고유한 특성이 가려져 실제적인 응용에 있어서 문제를 일으킨다. 본 연구는 단분산된 나노입자만을 분리하기 위하여 초음파 무화 효과에 의한 무화입자를 분리장으로 사용한 나노입자 분리방법을 제안하였다. 0.002 wt. %의 농도를 갖는 $TiO_2$ 나노입자 현탁액을 무화시켜 분리포집된 현탁액에 포합된 나노입자들의 입도분포를 측정하였다. 그 결과들로부터 제안된 방법을 이용하여 단분산 입자의 분리 포집이 가능함을 확인 할 수 있다.

• 한국음향학회지
• /
• 제36권3호
• /
• pp.165-171
• /
• 2017

유체로 채워진 원통형 압전진동자 내부에서 중심축으로 집속되는 음파에 대해 진동자 내부에 삽입된 동심원의 고체튜브가 음장분포에 미치는 영향을 해석하였다. 원통형 압전진동자의 내부로부터 방사된 음파는 유체매질을 지나 고체튜브의 벽면에서 반사 및 투과를 하여 중심축에 집속된다. 이때 고체튜브의 음향임피던스 및 두께 등에 의해 중심에 집속되는 음장 분포가 변한다. 이를 이론적으로 해석하기 위하여 각 매질에 대한 전달행렬을 도출하였고 이를 적용하여 중심축에서의 음압수준을 이론적으로 해석하였다. 여러 가지 두께를 갖는 아크릴 튜브에 대해서 중심축 상에서 측정한 음압수준의 변화는 이론해석의 결과와 잘 일치하였으며 중심에 형성되는 음압은 고체튜브의 두께에 따라 매우 민감하게 변화함을 확인하였다.