• Nuclear Engineering and Technology
• /
• 제56권7호
• /
• pp.2790-2798
• /
• 2024

In this research, thermoluminescent pellets were prepared by adding Mg, Cu, Na and Si impurities to lithium fluoride (LiF) crystal powder via melting and quenching methods to study dosimetric characteristics. Here, its reproducibility, dose response, dosimeter sensitivity, thermal and optical fading were investigated and the obtained results were compared with the properties of LiF: Cu, Mg, P crystal nominated as GR-200.

• 한국유체기계학회 논문집
• /
• 제11권4호
• /
• pp.52-62
• /
• 2008

All forecasts of a future energy demand anticipate an increase across the globe. With the increase of energy demand, the emission of $CO_2$ is also likely to increase by at least the same amount because energy supply will be based on fossil fuels, which is more apparent in a number of developing countries. In this context, the Micro Gas Turbine (MGT) is being considered as a promising solution. In order to propose a feasible concept of those technologies such as improving environmental effect and economics, we performed a sensitivity study for a biomass fueled MGT using a simulation model. The study consists of 1) the fundamental modeling using manufacturer's technical specifications, 2) the correction with the experimental data, and 3) the sensitivity study for system parameters. The simulation model was developed by PEPSE-GT 72, commercial steam/gas turbine simulation toolbox.

• 한국지구과학회지
• /
• 제32권2호
• /
• pp.239-247
• /
• 2011

국제기후변화협약 및 정부의 저탄소 정책은 기본적으로 과학이 제시한 이산화탄소 증가에 대한 기후민감도에 근거해야 한다. 그러나 기후민감도의 추정치는 현재까지 연구 단위별로 차이가 커서, 이에 대한 과학적 배경, 한계, 전망을 고찰할 필요가 있다. 본 연구에서는 지금까지의 기후민감도에 대한 국내외 연구 결과를 객관적으로 종합하여 검토한다. 기후민감도를 결정하는 것은 대기와 지면의 각종 물리과정에 의한 기후피드백 작용이며, 이 중 특히 태양 단파복사량을 조절하는 구름, 해빙과 관련된 물리과정은 불확실성이 가장 커서, 부정확한 민감도 추정을 야기하는 것으로 보인다. 이 때문에, 최근 인공위성 자료를 이용하여 추정한 기후민감도는 기후모델들이 갖는 범위(대기 중 이산화탄소 2배 증가당 지구평균기온 2-5 K 증가)에 들거나, 그보다 훨씬 작은 값을 갖는다.

• 한국콘텐츠학회논문지
• /
• 제13권8호
• /
• pp.191-200
• /
• 2013

본 연구는 사회복지과목 이수 대학생의 인권감수성 수준을 파악하고 인구사회학적 요인, 인권관련 교육경험에 따른 차이를 검증하고자 S사이버대학교에서 사회복지과목 수강중인 251명의 성인학습자를 대상으로 이루어졌다. 주요 연구변인의 현황을 파악하기 위하여 빈도분석, 분산분석을 실시하였다. 학생들의 인권감수성은 5점 척도 기준에서 2.70으로서 중간 정도수준이었으며, 이주노동자의 노동권과 장애아동의 교육권에 높은 인권감수성을 나타냈다. 전공유형, (사회복지)윤리과목 수강여부에 따라 인권감수성에 차이가 있었는데, 사회복지계열 전공 학생과 (사회복지)윤리과목 수강한 경험이 있는 학생의 인권감수성이 높았다. 또한 인권감수성 척도의 에피소드별로 인권감수성 수준에 차이가 있었다. 이러한 연구결과를 바탕으로 인권전문직인 사회복지사를 교육함에 있어 수업에서의 학생 권리 존중, 직간접적으로 인권갈등사례를 학습하면서 인권의식을 함양하는 교육방법의 필요성, 수업과정에서의 자기반성적 과정의 필요성, 학생들의 상황과 특성에 맞는 인권교육의 필요성을 제안하였다.

• Journal of Community Nutrition
• /
• 제8권4호
• /
• pp.185-192
• /
• 2006

This study was performed to investigate factors affecting sensitivity and preference for salty tastes of Korean adult females. Sensitivity and preference for salty tastes were determined as detection threshold concentration of NaCl solution and the optimally-preferred NaCl concentration of the bean sprout soup, respectively. A self-administered questionnaire was used to obtain the information regarding general characteristics, self diagnosis of stress, health-related lifestyle practices, dietary habits and food preferences. Dietary intake using 24-hours recall and blood pressure were measured. Salty taste detection thresholds and optimally-preferred NaCl concentrations were 0.0197% and 0.357%, respectively. There was a significant positive correlation between the optimally-preferred salt concentration and age, despite no significant correlation between either sensitivity or preference for salty taste and sodium intake, which was 3,605mg/day. Those who had bread or cereal with milk as breakfast instead of a traditional Korean meal and those who preferred jjigae to soup had significantly higher NaCl preferences for bean sprout soup. Going to bed after midnight and skipping meals (${\geq}3/week$) decreased salty taste sensitivity without reaching statistical significance. Self awareness of one's own health, recent weight changes, family history of hypertension, sleep quality, getting-up time, rate of eating and other food preferences did not affect either perception. Stress level, TV watching, BMI and sodium intake did not have significant correlation to sensitivity or preference. Further research including a large number of well-controlled subjects and more accurate measurement of sodium intake should be directed to find other factors affecting salt preference and sensitivity in order to decrease Na intake and related diseases.

• 대한지구과학교육학회지
• /
• 제6권2호
• /
• pp.145-151
• /
• 2013

The aim of this research is clarify the relationship between concept understanding degree about the environment and environmental sensitivity and heighten understanding of environmental education target to pre-service elementary teacher. The subjects of this study are science education intensive course 65 students of B educational university. Concept understanding degree about the environment was separately investigated by 'the definition of environmental education', 'Write The positive concept of the natural environment education and briefly describe.''The negative concept of the natural environment education and briefly describe'. Next clarify the relationship between concept understanding degree about the environment and environmental sensitivity target to pre-service elementary teacher. Based on these results, propose an alternative to cultivate pre-service elementary teacher's knowledge about environmental education. Degree of understanding of the concept environmental education research results are as follows. First, Cognition degree about definition of environmental education of pre-service elementary teacher is correctly recognized generally. Second, They do not think deeply about natural environment when it comes to the positive concept of the natural environment of pre-service elementary teacher. Third, They have only a little interest in natural environment when it comes to the negative concept of the natural environment of pre-service elementary teacher. Correlation research results of degree of understanding of the concept of environmental and environmental sensitivity are as follows. High understanding degree of environmental education is high environmental sensitivity. Heighten environmental sensitivity of pre-service elementary teacher will be sustainable environmental education so education is necessary for environmental Sensitivity training.

• 가정∙방문간호학회지
• /
• 제30권1호
• /
• pp.26-36
• /
• 2023

Purpose: This study investigated the organizational culture in hospital for infection control, moral sensitivity, and the degree of infection control among long-term care hospital nurses, and to identified the factors associated with infection control perfomance. Methods: 186 nurses who directly care for patients at seven Long-Term Care Hospitals in D Metropolitan City participated in the survey. Data were collected using self-reported questionnaires and analyzed using the IBM SPSS 26.0 software. Results: Moral sensitivity showed statistically significant differences in age (F=5.473, p=.065), clinical experience (F=8.890, p=.031), nursing hospital work experience (F=6.520, p=.038), religion (t=-2.01, p=.046) and position (t=-2.96, p=.003). Correlation analysis revealed that with moral sensitivity and effect of organizational culture on infection control, there was a positive correlation between infection control and patient-centered nursing (r=.201, p<.006), professionalism (r=.149, p<.042), benevolence (r=.303, p<.001), infection control organizational culture (r=.556, p<.001). Benevolence of moral sensitivity (β=.21, p=.001) and infection control organizational culture (β=.54, p<.001) were associated with infection control perfomance. Moral sensitivity (including patient-centered nursing, professionalism, and benevolence) and infection control organizational culture explained 33.8% of the variance in infection control (F=24.57, p<.001). Conclusion: It is important to improve the moral sensitivity of nurses and a positive organizational culture for better infection control. We need to develop intervention strategies and establish systematic and administrative support.

• 한국보육지원학회지
• /
• 제12권2호
• /
• pp.1-17
• /
• 2016

The purpose of this study was to investigate the difference in elementary school children's human rights sensitivity and the perception of human rights depending on child variables, family variables, school variables, and predictive influences among these variables. The participants were 1,364 elementary school children in the 'Current Status of Korean Children's and Youth's Rights(2013)'. The results of this study were as follows: First, the variables influencing children's human rights sensitivity were school life experience, grade, the degree to which adolescents think they are respected in deciding family issues, gender, experiences of teacher's swear words, experiences of being neglected, and experiences of being bullied at school. Second, the variables influencing children's perception of human rights were gender, experiences of parents' swear words, school life experience, the degree to which adolescents think they are respected in deciding family issues, and father's educational achievements. The results of this study offered fundamental data about the important issues in researching children's rights and the policy implications for enhancing them.

• 한국조리학회지
• /
• 제12권1호
• /
• pp.111-125
• /
• 2006

This study aims to find out how taste recognition differs between two groups of culinary arts students. We conducted a questionnaire survey on minimum sensitivity and minimum tastiness for four basic tastes. The first group consisted of 40 students in their first year, and the second group consists of 56 students in their second year and third year. The survey shows that both groups preferred medium saltiness, and the second group was more favorable to sweetness than the first group. The sweet and the pungent tastes were more favored than sourness and less favored than bitterness by both groups of subjects. The amount of the sample required for minimum tastiness shows that the freshmen had a higher sensitivity than the sophomore and junior students. Contrary to a common belief that people who have more experience in cooking would have a more sensitive taste, this study shows that taste sensitivity does not always accord with cooking experience. Rather, it depends on individual differences and current health status. Further research should be needed for various sensory test method and more kitchen experienced people who has more working years after graduate college.

• Asian Pacific Journal of Cancer Prevention
• /
• 제15권6호
• /
• pp.2929-2932
• /
• 2014

Purpose: To evaluate the diagnostic performances of risk of malignancy index (RMI), CA-125 and ultrasound score in differentiating between benign and borderline or malignant ovarian tumors and find the best diagnostic test for referral of suspected malignant ovarian cases to gynaecologic oncologists. Materials and Methods: This prospective study covered 467 women with pelvic tumors scheduled for surgery at our hospital between July 2011 and July 2013. The RMI was obtained from ultrasound score, CA125 and menopausal status. The diagnostic values of each parameter and the RMI were determined and compared using Statistical Packages for Social Sciences Version 14.0.1. Results: In our study, 61% of ovarian tumors were malignant in the post-menopausal age group. RMI with a cut-off 150 had sensitivity of 84% and specificity of 97% in detecting ovarian cancer. CA-125>30 had a sensitivity of 84% and a specificity of 83%. An ultrasound score more than 2 had a sensitivity of 96% and specificity of 81%. RMI had the least false malignant cases thus avoiding unnecessary laparotomies. Ultrasound when used individually had the best sensitivity but poor specificity. Conclusions: Our study has demonstrated the RMI to be an easy, simple and applicable method in the primary evaluation of patients with pelvic masses. It can be used to refer suspected malignant patients to be operated by a gynaecologic oncologist. Other models of preoperative evaluation should be developed to improve the detection of early stage invasive, borderline and non-epithelial ovarian cancers.