• 한국생산제조학회지
• /
• 제9권6호
• /
• pp.96-102
• /
• 2000

Spinning mechanism is generally used in coasting process on grass plates. Rebounding PR(Photo Resist) which leads to occur inferiority of coating process is caused by vibrational energy of whole coating system. In this study, the sensitivity analysis is performed to analyze and reduce vibrational terms in the spin coating system. The sensitivity analysis is bared on the numerical expression of this system. By the bond graph method. power flow of each system is represented by some basic bond graph elements. Any energy domain system is modeled using the unified elements. The modelled spin coater system is verified with power spectrum data measured by FFT analyzer. As the results of verifying model parameters and sensitivity analysis, principal factors causing vibration phenomenon are mentioned. A study on vibration method in the spin coating system is discussed.

• 산업융합연구
• /
• 제13권4호
• /
• pp.1-10
• /
• 2015

The purpose of this study is to propose a model built on the theoretical foundation of ecological sensitivity applicable to group and coaching process for organization members in industry management environment. For this, I have looked into theoretical foundation basis-foundation required for the ecological sensitivity process based on ecological discourse, based on which I have proposed a process model. The ecological basis-foundation with regards to ecological sensitivity dealt with in this paper includes 1)Crisis awareness, 2)Acquisition of ecological unconsciousness, 3)Fostering green imagination and 4)Setting targets.

• 한국콘텐츠학회논문지
• /
• 제16권12호
• /
• pp.346-359
• /
• 2016

본 연구는 대학생의 대인예민성과 사회적지지가 대학생활만족도에 미치는 영향을 분석하여 대학생의 사회적지지를 높이기 위한 방안을 마련하기 위하여 시행되었다. 연구의 목적을 달성하기 위하여 부산광역시에 소재한 6개의 대학을 할당 표집하여 475명의 설문지를 분석에 사용하였으며, SPSS 통계 프로그램을 활용하여 위계적 회귀분석을 실시하였다. 주요 연구결과를 정리해보면 다음과 같다. 첫째, 대인예민성은 사회적지지에 부적 영향을 미치는 것으로 나타났다. 둘째, 대인예민성은 대학생활만족도에 부적 영향을 미치는 것으로 나타났다. 셋째, 사회적지지는 대학생활만족도에 정적 영향을 미치는 것으로 나타났다. 넷째, 대인예민성이 대학생활만족도에 미치는 영향에서 사회적지지가 매개효과를 가지는 것으로 나타났다. 이러한 연구결과를 기반으로 대학생의 대인예민성을 감소시키고 사회적지지를 향상시킬 수 있는 심리상담 프로그램과 대인관계 및 가족관계 향상프로그램의 확대실시를 제언하였다.

• 한국치위생학회지
• /
• 제20권3호
• /
• pp.303-312
• /
• 2020

Objectives: The purpose of this study was to investigate the relationship between periodontal disease, number of remaining teeth with high-sensitivity C-Reactive protein in Korean adults aged 40 and older. Methods: The study used the Sixth Korea National Health and Nutrition Examination Survey (KNHANES VI-3), 2015. The study sample consisted of 3,883 aged 40 years or older who had completed the health survey and the health examination. Logistic regression analyses were performed to examine the odds ratios of high-sensitivity C-Reactive protein by periodontal disease and number of remaining teeth, adjusting for demographic characteristics, chronic diseases and oral health behavior-related variables. Results: When the demographic and chronic diseases were adjusted, the risk of high-sensitivity C-Reactive protein (hs-CRP) average 1.23 mg/L or higher was 1.36 times higher in patients with periodontal disease between the ages of 40 and 49, but it was not significant (OR=1.36; 95% CI=0.82-2.23). In addition, in the group of 0~23 remaining teeth aged 40~49 years, the risk of higher than the average 1.23 mg/L of high-sensitivity C-Reactive protein was 2.03 times higher (OR=2.03; 95% CI=1.10-3.74), and 1.49 times higher in 60~69 years (OR=1.07; 95% CI=1.04-2.76). Conclusions: This study found that periodontal disease and tooth loss in Korean adults aged 40 and older was significantly associated with high-sensitivity C-reactive protein.

• 디지털융복합연구
• /
• 제20권4호
• /
• pp.737-745
• /
• 2022

본 연구는 간호대학생의 주관적 행복감, 윤리적 민감성, 공감 능력 및 인성에 대해 알아보고 인성에 영향을 미치는 요인을 파악하기 위해 시행된 서술적 조사연구이다. 연구 대상자는 경기도에 소재한 일개 간호학과에 재학 중인 학생 165명으로, 자료수집은 2020년 9월 9일부터 10월 18일까지 온라인 설문조사 방식으로 실시되었다. 연구 결과 간호대학생의 주관적 행복감, 윤리적 민감성, 공감능력, 행복감의 평균은 각 5.11±1.03점, 4.33±.38점, 3.83±.42점, 4.09±.39점이었다. 인성은 주관적 행복감, 윤리적 민감성, 공감능력과 유의한 양적 상관관계에 있었다. 간호대학생의 인성에 영향을 미치는 요인은 전공만족도, 주관적 행복감, 윤리적 민감성으로 이들 변수의 전체 설명력은 52.8%였다. 본 연구 결과를 토대로 인성에 대한 설명력이 높은 윤리적 민감성, 주관적 행복감과 전공만족도를 고려한 교육프로그램 개발이 필요하다.

• Journal of Nutrition and Health
• /
• 제30권9호
• /
• pp.1035-1044
• /
• 1997

There is substantial evidence that insulin sensitivity can be enhanced through appropriate dietary management . In this study, insulin sensitivity was evaluated using and insulin suppression test. Male Sprague-Dawley rats, were caused to be in a diabetic condition by the injection of streptozotocin, and divided into four groups. They were fed one of the following diets for 2 weeks : (group 1) a high-carbohydrate(CHO) low-fat low-fiber diet, (group 2) a high CHO low-fat and high-fiber diet, (group 3) a low-CHO high-fat and low-fiber diet, and (group 4) a low-CHO low-fat diet groups (as comparison between group 1 and group 2 shows). In the low-CHO high-fat diet groups, dietary fiber tended to decrease plasma glucose levels at the end of the experiment, but not significantly (as comparison between group 3 and group 4 shows). The average steady state plasma glucose level in rats on the group 3 diet was the highest among all four groups(p<0.05), indicating the poorest insulin sensitivity . However, high fiber increased insulin sensitivity in rats on the low-CHO high-fat diets(as shows by a comparison between group 3 and group 4). On the other hand , the high-CHO low-fat enhanced insulin sensitivity in rats on the low fiber diet(group 1 and group 3). The degree of enhancement of insulin sensitivity depends on the combination of CHO, fat , and fiber in the diet. In conclusion, this study demonstrates that a low-CHO high-fat low -fiber diet may be deleterious to diabetic rats. In view of insulin sensitivity enhancement , dietary fiber level is irrelevant, as long as the diet has a high-CHO and low-fat level.

• Journal of Nutrition and Health
• /
• 제22권4호
• /
• pp.266-274
• /
• 1989

The current study was undertaken to determine the effects of the ratios of dietary fat to carbohydrate and energy restriction on insulin sensitivity in the growing rats. Male rats weighting 80-90g were fed experimental diets for two weeks. Rats were killed and epiddymal adipose tissue were removed and sliced. Explants of adipose tissues were incubated for 2 hours in KRB(Krebs-Ringer bicarbonate) buffer containing various concentrations of human insulin and [U-14C]glucose. Insulin sensitivity was determined as glucose conversion to total lipids (lipogenesis) during 2 hr incubation. Exp't I : Effects of Ratios of Fat to Carbohydrate on Insulin Sensitivity. Eighteen male rats were fed 3 diets for 2 weeks. Diet 1 was low fat-high carbohydrate (4% soybean oil and 66.5% cornstarch) ; diet 2, medium fat-medium sarbohydrate(12% soybean oil and 58.5% cornstarch) ; diet 3, high fat-low carbohydrate (20% soybean oil and 50.5% cornstarch). Insulin sensitivity was higher in the order of LF-HC, MF-HC and HF-LC diet groups (p<0.05), i.e, lipogenesis was higher at all insuline concentration in the explants from rats fed LF-HC diet. However, thers was no significant difference in body weight gain and epididymal adipose tissue weight among treatments. Exp't II ; Effects of Energy Restriction on Insulin Sensitivity. Twelve rats were grouped into ad libitum feeding and restricted feeding(70% of ad libitum). The experimental diet was medium fat-medium carbohydrat diet as used in the Exp't I. Restricted feeding group tended to show higher insulin sensitivity compared to ad libitum group. However, there was no statistical difference between two groups. As expected, body weight gain and epididymal adipose tissue were higher in the ad libitum group. In summary, the resutls of the current study showed that the epididymal adipose tissue taken from the rats fed low fat-high carbohydrate diet showed higher insulin sensitivity compared to those fed high fat-low carbohydrate, and that resticted feeding tended to elevate insulin sensitivity in these tissues.

• 디지털융복합연구
• /
• 제17권7호
• /
• pp.125-130
• /
• 2019

민감도 해석은 어떤 설계 변수의 변화가 전체 시스템에 미치는 영향을 확인하기 위한 방법으로, 계산된 민감도는 구조개선 시 중요한 지표가 된다. 본 연구에서는 유한요소해석을 이용하여 설계 변수에 대한 민감도 도출 및 분석 방법과, 민감도 결과를 활용한 구조개선 방법을 제안하였다. 구조 개선이 필요한 실제 반도체 검사 장비를 이용하여 경량화를 위한 설계 변수를 선정하고 설계 변수에 대한 민감도를 유한요소법과 유한차분법을 활용하여 계산하였으며, 장비가 요구하는 과도응답(Transient Response)은 유지하면서도 무게 감소가 가능한 개선 방안을 제시하였다. 유한요소해석과 유한차분법을 이용한 민감도 분석 결과를 이용한다면 구조물의 설계 개선 시 원하는 응력 또는 변위는 만족하면서도 구조적으로 향상된 설계를 할 수 있고, 이는 반도체 검사 장비뿐만 아니라 다양한 분야에서 활용이 가능하다.

• 한국안광학회지
• /
• 제21권1호
• /
• pp.23-34
• /
• 2016

목적: 본 연구에서는 써클콘택트렌즈의 착용이 시력교정술을 받은 눈에서의 대비감도 및 눈부심감도에 미치는 영향을 알아보고자 하였다. 방법: 시력교정술을 받지 않은 40안과 시력교정술을 받은 30안에 무도수의 써클콘택트렌즈를 착용시킨 후 CGT-1000을 이용하여 대비감도와 눈부심감도를 평가하였으며, 동공크기를 측정하여 대비감도 및 눈부심감도와 동공크기와의 상관관계를 분석하였다. 결과: 시력교정술을 받은 경우 써클콘택트렌즈 착용으로 고영역대 공간주파수에서는 대비감도의 저하가 나타났으며 시력교정술을 받지 않은 군보다 그 정도가 더 크게 나타났다. 써클콘택트렌즈 착용으로 인해 동공크기와 대비감도 변화와의 상관성이 작아졌으며 시력교정술을 받은 군에서 상관성이 더 작아졌다. 또한, 써클콘택트렌즈 착용은 눈부심에 더 크게 영향을 미치는 것으로 나타났으며, 동공크기에 따른 눈부심감도의 변화분석에서도 시력교정술을 받지 않은 군에서 눈부심을 더 크게 느끼는 것으로 나타났다. 시력교정술을 받은 각막에서의 써클콘택트렌즈는 각막의 중심부에 위치하지 못하였다. 결론: 본 연구에서는 시력교정술 후 써클콘택트렌즈 착용으로 인해 대비감도가 저하되며 눈부심이 증가되므로 이에 대한 충분한 이해와 고려가 필요함을 제안한다.

• Asian Pacific Journal of Cancer Prevention
• /
• 제17권11호
• /
• pp.4973-4976
• /
• 2016

Objective: This article concerns evaluation of the sensitivity, specificity and accuracy of FNAB for pre-surgical diagnosis of benign and malignant lesions of major and minor salivary glands of patients treated in the Department of Head and Neck Surgery of Erasto Gartner Hospital. Methods: This retrospective study analyzed medical records from January 2006 to December 2011 from patients with salivary gland lesions who underwent preoperative FNAB and, after surgical excision of the lesion, histopathological examination. Results: The study had a cohort of 130 cases, but 34 cases (26.2%) were considered unsatisfactory regarding cytology analyses. Based on the data, sensitivity was 66.7% (6/9), specificity was 81.6% (71/87), accuracy was 80.2% (77/96), the positive predictive value was 66,7% (6/9) and the negative predictive value was 81.6% (71/87). Conclusion: Despite the high rate of inadequate samples obtained in the FNAB in this study the technique offers high specificity, accuracy and acceptable sensitivity.