• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.29 no.6
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• pp.8-13
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• 2015

Recently, Illumination industry of LED module has been focused to industry technology for energy conservation of nation. The LED device is excellent to power efficiency due to semiconductor light source element. And the application to the lighting circuit technology can be designed to the sensitive lighting system for human sensitivity control. In this paper, as a process for analyzing the operating temperature of standardized electronic device including LED device has analyzed about fusing character with in designed micro fuse for electronic device protection from the over current. Using the de-rating technique, which is performed to micro fuse fusing test in the range of $-30^{\circ}C{\sim}120^{\circ}C$ thermostatic chamber. To the output data in each temperature zone, it is performed to first-order linear fitting. Additionally, applying the resistance temperature coefficient and statistical data for the reliable analysis has derived to the metal element resistance of micro fuse with temperature change of the thermostatic chamber. As a research result, The changed temperature effect of thermostatic chamber was confirmed regarding fusing time change.

• Journal of Aerospace System Engineering
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• v.10 no.3
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• pp.63-69
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• 2016

The properties of composite materials, when compared to those of metallic materials, are highly variable due to many factors including the batch-to-batch variability of raw materials, the prepreg manufacturing process, material handling, part-fabrication techniques, ply-stacking sequences, environmental conditions, and test procedures. It is therefore necessary to apply reliable statistical-analysis techniques to obtain the design allowables of composite materials. A new composite-material qualification process has been developed by the Advanced General Aviation Transport Experiments (AGATE) consortium to yield the lamina-design allowables of composite materials according to standardized coupon-level tests and statistical techniques; moreover, the generated allowables database can be shared among multiple users without a repeating of the full qualification procedure by each user. In 2005, NASA established the National Center for Advanced Materials Performance (NCAMP) with the purpose of refining and enhancing the AGATE process to a self-sustaining level to serve the entire aerospace industry. In this paper, the statistical techniques and procedures for the generation of the allowables of aerospace composite materials will be discussed with a focus on the pooling-across-environments method.

• Proceedings of the KSRS Conference
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• v.1
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• pp.200-203
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• 2006

Cloud detection algorithm is being developed as major one of the 16 baseline products of CMDPS (COMS Meteorological Data Processing System), which is under development for the real-time application of data will be observed from COMS Meteorological Imager. For cloud detection from satellite data, we studied two different algorithms. One is threshold technique based algorithm, which is traditionally used, and another is artificial neural network model. MPEF scene analysis algorithm is the basic idea of threshold cloud detection algorithm, and some modifications are conducted for COMS. For the neural network, we selected MLP with back-propagation algorithm. Prototype software of each algorithm was completed and evaluated by using the MTSAT-1R and GOES-9 data. Currently the software codes are standardized using Fortran90 language. For the preparation as an operational algorithm, we will setup the validation strategy and tune up the algorithm continuously. This paper shows the outline of the two cloud detection algorithm and preliminary test result of both algorithms.

• The Journal of Korean Society for School & Community Health Education
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• v.13 no.2
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• pp.1-15
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• 2012

Objectives: This is an explanatory correlational study to identify the relationship among knowledge, attitudes about cancer, self efficacy and health behavior for cancer prevention in school-age children. Methods: Data were collected from 488 students in grades 5 or 6 who understood the purpose of the study and agreed to participate. Data were analyzed by descriptive statistics, t-test, Pearson's correlation coefficient, and multiple regression using SPSS 18.0. Results: There were significant differences in health behavior for cancer prevention between upper 25% and lower 25% group of attitudes about cancer and self efficacy. Result from the multiple regression analysis revealed difference in the related factors and in the magnitude of the relationship evaluated by the standardized beta coefficients. Significant factors, listed by the magnitude of beta coefficients, were self efficacy, attitudes about cancer, perceived health status. These variables accounted for 30.5% of health behavior for cancer prevention. Conclusions: Based on results of the present study, systemic health education about cancer prevention for school-age children is suggested. Further research is necessary in order to draw consensus on roles of the related factors of health behavior for cancer prevention.

• Korean Journal of Adult Nursing
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• v.22 no.3
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• pp.322-328
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• 2010

Purpose: The purpose of this study was to investigate the effects of an individualized cardiac health education on self-care behavior and serum cholesterol levels patients with coronary artery disease. Methods: Twenty-two patients in the intervention group and 22 in the control group were assigned randomly in this study. The intervention group received an individualized cardiac health education program which consisted of four different sessions for a total of four sessions. Specifically, two sessions occurred during the patients' hospitalization with a third session at the time of discharge with a fourth session scheduled via telephone one week post discharge. Data were collected through a questionnaire for self-care behavior and a blood test for total cholesterol at the time of admission and the two weeks after discharge. The questionnaire for self-care behavior was a standardized instrument and serum cholesterol was measured by Accutrend GC (Roche, Germany). Results: Self-care behavior scores included diet, medication, exercise, risk factor, blood pressure measurement, and visits to hospital were significantly more in the experimental group compared to the control group. Conclusion: The above findings indicate that the individualized cardiac health education was effective in increasing of self-care behavior.

• Child Health Nursing Research
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• v.26 no.1
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• pp.35-46
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• 2020

Purpose: The purpose of this study was to test a model for intention to discontinuation drinking high caffeinated beverages among undergraduate students. This model was based on the Ajzen's theory of planned behavior and Becker's health belief model. Methods: Participants consisted of 201 undergraduate students. Data were collected by questionnaires from March 11 to May 24, 2019. Collected data were analyzed using SPSS/WIN 22.0, AMOS 22.0 program. Results: The assessment of the model indicated an acceptable fit (normed x²=1.65, goodness-of-fit index [GFI]=.83, adjusted GFI=.79, comparative fit index [CFI]=.92, standardized root mean square residual [SRMR]=.05, Tucker-Lewis index [TLI]=.91, normed fit index [NFI]=.87, root mean square error of approximation [RMSEA]=.07). Perceived behavior control, subjective norm, the subjective attitude was found to have a significant direct effect on the intention to discontinuation of drinking a high caffeinated beverage. The variances of this model explained 45.3% of the variance in intention to discontinuation of drinking a high caffeinated beverage. Conclusion: These results suggest that a need to increase awareness of adverse effects and potential risks of high caffeinated beverage consumption in undergraduate students. Besides, the university and government should provide education and campaigns to prevent excessive high-caffeinated beverage consumption.

• Journal of Korean Biological Nursing Science
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• v.16 no.1
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• pp.33-40
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• 2014

Purpose: The purpose of this study was to identify the prevalence and risk factors of colon polyps. Methods: The subjects were 180 adults enrolled from examinees who underwent colonoscopy at the health promotion center and OPD in Ulsan University Hospital. The risk factors were collected by a self-reporting standardized questionnaire and medical records. Data analysis involved chi-square test, and multiple logistic regression. Results: The prevalence of colon polyps was 41.6%. The risk factors for colon polyps were significantly increased by the cases of subjects more than 50 years old (OR, 9.213; CI, 3.291-25.789), subjects who didn't have any regular high-intensity exercise (OR, 4.762; CI, 1.387-16.351), subjects whose intake of fruits was less than once per a week (OR, 5.938; CI, 1.069-32.985) and subjects who showed irregular defecation (OR, 3.066; CI, 1.178-7.980). Conclusion: This study suggests that eating habits and proper exercise, which promote a normal habit of defecation so as to be helpful in preventing colon polyps.

• International Journal of Human Ecology
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• v.8 no.1
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• pp.39-51
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• 2007

This study compares the buying patterns of American and Korean female college students in relation to their self-concept. It was implemented through self-administered questionnaires which were back translated for validity. Respondents comprised 730 female students majoring in fields related to clothing and textiles: 307 U.S. students were located in the Northeast, West, and Southwest, and 423 Korean students were at four universities in Seoul. Likert scales were used for most measures, with 1 = never or very unimportant, and 5 = always or very important. Personal self-concept was measured on the basis of Won-Shik Jung's Standardized Self-concept the Test and Tennessee Self Concept Scale. Data were analyzed by descriptive statistics and t-tests. Some clear differences between the two countries emerged. Marketers targeting American consumers should pay more attention to practicality and service, and for Koreans, more symbolic meaning of products and store displays, since these are important to them. Self-concept was somewhat related to purchasing behavior, but more study should be done before applying findings to marketing concepts.

• Journal of the Korean Data and Information Science Society
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• v.21 no.4
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• pp.651-667
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• 2010

In this paper, using a meta analysis of anti-hyperlipidemia effect of soybeans were studied. Studied the effects of soybeans using Hedges' standardized mean difference looked at the effect. Applying the fixed-effects model analysis of fecal cholesterol and total cholesterol and triglycerides showed a statistically significant reduction in HDL cholesterol increase was statistically significant at. In addition, the homogeneity of all variables by running the test did not meet the homogeneity of the kidney weight, between weight, HDL cholesterol, LDL cholesterol, total cholesterol, and triglycerides in the random effects model against the results of the analysis conducted by a statistically significant variable that did not.

• Child Health Nursing Research
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• v.22 no.4
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• pp.299-308
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• 2016

Purpose: To investigate the perception and barriers of Kangaroo-Mother Care (KMC) among nurses in Neonatal Intensive Care Units (NICU). Methods: Participants were 131 nurses working in NICU who completed self-report questionnaires which included information regarding perception, barriers, and practice of KMC. Collected data were analyzed using SPSS 18.0 program for descriptive statistics, t-test, ANOVA, and Pearson correlation coefficients. Results: Of the participants, 33.6% reported the practice of KMC in their NICU, with 75.6% wanting to receive training in KMC and 31.3% having received KMC education. Most of the participants agreed that KMC enhances attachment, parental confidence, and effective breast feeding but they reported a negative perception in providing KMC for premature infants weighing less than 1000 grams or intubated premature infants. Major barriers to practicing KMC were safety of infants, possible work overload for nurses, as well as absence of consistent guidelines. Barriers to KMC among nurses who received the KMC training were lower than nurses who did not receive the KMC training (t=-2.11, p=.037). Conclusion: Education program and standardized clinical practice protocol should be developed to foster the positive perception and to reduce nurse barriers to KMC.