충돌제트의 유동 및 열전달 특성에 미치는 맥동의 영향

이은현,이성혁,이준식,Lee, Eun-Hyeon,Lee, Seong-Hyeok,Lee, Jun-Sik 대한기계학회 2001 大韓機械學會論文集B Vol.25 No.12

Experiments are carried out to investigate the effect of pulsations on the flow and heat transfer characteristics of an axisymmetric impinging jet on a flat plate heated by using a gold coated aim. Vertex motion in the impinging jet is visualized using a fog generator, and a thermochromatic liquid crystal (TLC) technique is used to measure the time averaged local temperature distributions on the impingement plate. In addition, the quantitative data for mean velocity and turbulence intensity are obtained employing hot-wire anemometer. Parameters such as pulsating frequency (f = 0, 10 and 20 Hz) and the nozzle-to-palate spacing (H/D = 2, 10) are considered at the jet Reynolds number of 20,000. Consequently, the significant changes of flow structure and local Nusselt number distribution due to pulsations are observed. In the case of H/D = 2, the enhanced heat transfer coefficient exceeding 30 % is observed at the stagnation point. At the high H/D, heat transfer rate increases with pulsation frequency.

유방암환자의 피로와 심리사회적 적응에 대한 희망의 매개 (Mediation) 작용

이은현 한국간호과학회 2000 Journal of Korean Academy of Nursing Vol.30 No.4

토굴을 이용한 새우젓의 숙성

이은현,이은미,장규섭,장해동 충남대학교 농업과학연구소 1997 농업과학연구 Vol.24 No.2

Effective storage facilities are required to stabilize the price of agricultural and marine products to preserve their qualities due to the big fluctuation of shrimp price in Korea. It is easy to make the cave because of good conditions of the land configuration, soil and convenient transportation. The cave storage can save the cost about 40% in building site and equipment, and about 50% in maintenance comparing to existing low temperature storage facilities. The cave storage provide to improve the quality of their stored products with the low heat conductivity, the constant temperature and humidity year round. Therefore, more low temperature storage facilities are required because the items are expanded from potatoes, sweet potatoes, onions, garlics, apples and chestnuts to tangerines, grapes, cabbages, radishes, and wet ginsengs. The damands of the low temperature storage facilities can be substituted into the cave storage facilities. Thus, studies are conducted to observe the changes of the components of the pure and the seasoned salted shrimps with fermentation period during stored at room temperature in cave and to establish the storing at underground facilities to produce high quality salted fish to make profit.

고등학생 흡연과 스트레스 및 사회적 지지와의 관련성

이은현,송미숙,이순영,김지윤,전기홍,Lee, Eun-Hyun,Song, Mi-Sook,Lee, Soon-Young,Kim, Jee-Yoon,Chun, Ki-Hong 대한예방의학회 2003 예방의학회지 Vol.36 No.2

Objectives : The purpose of the present study was to explore a possible interaction effect of stress and social support on the smoking status and identify smoking related factors of high school students, Methods : A cross-sectional design was used for this study. A total of 1,251 high school students from Gyeonggi-do were selected using stratified-proportional random cluster sampling methods, The participants completed a set of questionnaires to measure their smoking status, stress, social support and sociodemographic information, The obtained data were analyzed using descriptive statistics, $x^2$-tests and hierarchical logistic regressions. Results : The interaction effect of stress and social support on smoking status was not supported. However, stress, sex, types of school, parent's smoking and friends' smoking were significantly predicted the smoking status of the high school students. Conclusions : In relation to the prevention of adolescents' smoking, it is recommended to decrease the stress levels of students, to make adolescents' parents cease smoking, and to educate adolescents on how to refuse the temptation to smoke or pressure from their smoking friend.

국내 연구에서 당뇨병 환자 건강관련 삶의 질 측정에 관한 모니터링

이은현,김춘자,조수연,채현주,이선희,김은정 한국간호과학회 2011 Journal of Korean Academy of Nursing Vol.41 No.4

Purpose: The purpose of this study was to monitor the use of health-related quality of life (HRQOL) instruments in Korean studies of patients with diabetes. Methods: Of 86 Korean studies initially identified, 17 studies met the inclusion criteria. For each study, a description of the instrument and its psychometric properties were monitored by the Instrument Review Criteria of the Scientific Advisory Committee. These criteria include conceptual definition, attributes, taxonomy, reliability, validity, responsiveness, administrative mode, and language adaptations. Results: Five generic and one diabetes specific type questionnaires were identified from the 17 studies. Of those studies, conceptual definitions with the attributes of multi-dimension and subjectiveness were provided for 11 studies (71%). In the analysis of conceptual taxonomy, only 6 studies were classified as HRQOL, while other studies were done as QOL or health status. In monitoring of psychometric properties, reliability, validity, and responsiveness were reported for 88.2%, 64.7%, and 29.4%, respectively. One generic instrument was developed with a Korean population, while the other instruments were developed for Western countries. However, language adaptations were performed for only a few of the instruments. Conclusion: The psychometric properties including responsiveness of most instruments warrants further research, and the development of diabetes-specific HRQOL measurements should be sought to facilitate intervention outcomes across Korean studies of patients with diabetes.

Review of the Psychometric Evidence of the Perceived Stress Scale

이은현 한국간호과학회 2013 Asian Nursing Research Vol.7 No.3

Purpose The purpose of this study was to review articles related to the psychometric properties of the Perceived Stress Scale (PSS). Methods Systematic literature searches of computerized databases were performed to identify articles on psychometric evaluation of the PSS. Results The search finally identified 19 articles. Internal consistency reliability, factorial validity, and hypothesis validity of the PSS were well reported. However, the test-retest reliability and criterion validity were relatively rarely evaluated. In general, the psychometric properties of the 10-item PSS were found to be superior to those of the 14-item PSS, while those of the 4-item scale fared the worst. The psychometric properties of the PSS have been evaluated empirically mostly using populations of college students or workers. Conclusion Overall, the PSS is an easy-to-use questionnaire with established acceptable psychometric properties. However, future studies should evaluate these psychometric properties in greater depth, and validate the scale using diverse populations. Summary Purpose The purpose of this study was to review articles related to the psychometric properties of the Perceived Stress Scale (PSS). Methods Systematic literature searches of computerized databases were performed to identify articles on psychometric evaluation of the PSS. Results The search finally identified 19 articles. Internal consistency reliability, factorial validity, and hypothesis validity of the PSS were well reported. However, the test-retest reliability and criterion validity were relatively rarely evaluated. In general, the psychometric properties of the 10-item PSS were found to be superior to those of the 14-item PSS, while those of the 4-item scale fared the worst. The psychometric properties of the PSS have been evaluated empirically mostly using populations of college students or workers. Conclusion Overall, the PSS is an easy-to-use questionnaire with established acceptable psychometric properties. However, future studies should evaluate these psychometric properties in greater depth, and validate the scale using diverse populations.

사회적지지의 효과 모델 및 통계분석방법에 관한 국내간호논문 분석

이은현,김진선 한국간호과학회 2000 Journal of Korean Academy of Nursing Vol.3 No.1

The purpose of the present study is 1) to explain major effect models (main, moderating, and mediating) of social support and statistical methods for testing the effect models and 2) to analyze and evaluate the consistency in the use of the effect models and its statistical methods in Korean nursing studies. A total of 57 studies were selected from Journal of Korean Academy of Nursing, Journal of Korean Academic Society of Adult Nursing, Journal of Korean Women's Health Nursing Academic Society, Journal of Fundamentals of Nursing, Journal of Korean Community Nursing, Journal of Korean Psychiatric and Mental Health Nursing Academic Society, and Journal of Korean Pediatric Nursing Academic Society published in the year of 1990-1999. In results, most studies on social support performed in Korea Nursing Society were about a main effect model. There are few studies on moderating or mediating model of social support. Thus, it was difficult to find research findings how, why, under what conditions social support impacted on health outcomes. Most studies on the moderating or mediating effect model of social support used statistical methods for testing main effect model rather than for testing moderating or mediating effect model. That is, there are inconsistency between effect models of social support and its statistical methods in Korean nursing researches. Therefore, it is recommended to perform studies on moderating or mediating effect model and use appropriate statistical methods.

암 환자 삶의 질에 대한 근거 이론적 접근

이은현,송영숙,전미선,오가실,이원희,이영희 한국간호과학회 2004 한국간호과학회 학술대회 Vol.2004 No.5

추후관리 받는 암환자의 요구 측정도구 개발 및 평가

이은현,문성미,조수연,오영택,전미선,김성환,김재성,김혜경 한국간호과학회 2010 Journal of Korean Academy of Nursing Vol.40 No.4

Purpose: The purpose of this present study was to develop and evaluate the psychometric properties of a needs scale for patients with cancer undergoing follow-up care (NS-C). Methods: A preliminary NS-C of 48 was derived from literature reviews and in-depth interviews with patients with cancer. Content validation of the items was established by oncology physicians and nurses. Each item was scored on a five-point Likert scale. The preliminary NS-C and Eastern Cooperative Oncology Group (ECOG) performance status questionnaires were administered to 873 patients with cancer recruited from three university hospitals. The data were analyzed using factor analysis, multidimensional scaling analysis, ANOVA, Pearson correlation coefficients, and Cronbach’s alpha. Results: From the factor analysis, 25 significant items in six subscales were derived. The subscales were named physical symptoms, diet and exercise, support, relationship with health professionals, treatment/prognosis, and keeping mind under control. The NS-C also established item convergent and discriminant validity, and known-groups validity. Cronbach’s alpha of the subscales ranged from .90 to .92. Conclusion: This study suggests that the NS-C is an easy, reliable and valid instrument to measure the needs of patients with cancer. Health professionals may use the NS-C for patients with cancer both in practice and research.

성인간호학회지의 국제학술지 등재전략

이은현 성인간호학회 2008 성인간호학회 학술대회 Vol.2008 No.12