• Proceedings of the Materials Research Society of Korea Conference
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• 1994.05a
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• pp.2-7
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• 1994

The dynamic fatigue life equation is applied to uniaxial tensile test. The resultant equations far the surface energy and fracture toughness are calculated with the data from the tensile test and compared with the ones from ASTM E399 test. During the crack propagation under model loading, the material of the crack tip undergoes the process of the elastic-plastic deformation in the uniaxial tensile test. The surface energy per unit area is proportional to the ratio of plastic and elastic elongations. The calculated fracture toughness of the metals are very well coincident to the ASTM E399's test results.

• Bulletin of the Korean Mathematical Society
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• v.49 no.1
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• pp.57-61
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• 2012

It is well known that one could use a fixed loxodromic or parabolic element of a non-elementary group $G{\subset}M(\bar{\mathbb{R}}^n)$ as a test map to test the discreteness of G. In this paper, we show that a test map need not be in G. We also construct an example to show that the similar result using an elliptic element as a test map does not hold.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.10
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• pp.24-35
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• 2017

This paper reports the results of afield appliance study of the hydraulic well method to prevent embankment seepage, the large-scale embankment experiment and seepage analysis to examine the traits of the seepage pressure. The experimental procedure was focused on the pore pressure after examining the detected value of the pore pressure gage. The inner water levels of hydraulic well were compared with the pore pressure data, which were used to inspect the seepage variations. Two different large-scale experiments were conducted according to the installation points of the hydraulic wells. The decrease in seepage pressure reached a maximum of 37% from the experimental results. The experimental pore pressure results were similar to those of the analyses. In addition, the pore pressure oriented from the water level variations of the hydraulic well showed similar patterns between the experiment and analysis, but if the hydraulic well was deeper, the analyzed water levels were larger than the experimental values.

• Child Health Nursing Research
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• v.15 no.4
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• pp.343-349
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• 2009

Purpose: The purpose of this study was to identify the relationships among self-esteem, meaning in life, and spiritual well-being in middle school students. Methods: The research design was a descriptive correlational survey involving 405 middle school students in grades 1 to 3 in S city, K city, and C city. Data were collected from March to May 2008 using questionnaires. Means with standard deviation, t-test, ANOVA, Duncan post-hoc test, and Pearson correlation coefficients were used to analyze the data. Results: According to general characteristics of the students, there were statistically significant differences in self-esteem for gender, grade, and region, in meaning in life, there were significant differences for grade, gender, and region, and in spiritual well-being, there were statistically significant differences for gender, religion, and region. There were significant correlations between self-esteem and meaning in life, between self-esteem and spiritual well-being, and between meaning in life and spiritual well-being. Conclusion: Self-esteem, meaning in life, and spiritual well-being should be considered as important factors for healthy development in the middle school period. These three variables should be considered as the main content for self-development programs for middle school students.

• Research in Community and Public Health Nursing
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• v.24 no.3
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• pp.292-301
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• 2013

Purpose: The purpose of this study was to compare the spiritual well-being and quality of life between hospital and home hospice patients. Methods: A total of 116 patients from 4 hospice hospitals in D city and P city participated in this study from January to April 2012. To measure spiritual well-being, an instrument developed by Paloutzian and Ellison (1982) and revised by Park (2005) was used. To measure quality of life, an instrument developed by Cho (1993) and revised by Sun (2003) was used. The data were analyzed by using descriptive statistics, t-test, $x^2$-test, and ANCOVA. Results: Spiritual well-being and quality of life were higher in home hospice patients than in hospital hospice patients, but they were not statistically significant. Higher education and having religion were significantly related to higher spiritual well-being in both groups. Having religion and pain history for the past one week were significantly related to higher quality of life in both groups. Conclusion: For hospice patients, participation in religious activities needs to be encouraged to improve their spiritual well-being and quality of life. Assessing the hospice patients' pain history with close observation and managing the pain are suggested.

• 한국신재생에너지학회:학술대회논문집
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• 2010.06a
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• pp.173-173
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• 2010

This thesis identified basic design elements (Sustainable Yield, Temperature of Groundwater, Depth of Well, Separation Distance between wells) regarding installation of Standing Column Well, Geothermal Heat pump System by dynamic analysis.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2001.09a
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• pp.184-187
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• 2001

This study presents procedure and analysis method for not well known slug interference tests. Results of the slug interference tests were compared with those of pumping and recovery tests and conventional slug tests.

• Culinary science and hospitality research
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• v.15 no.3
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• pp.307-323
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• 2009

This study aims to redefine people's attitudes about well-being trend LOHAS(Lifestyles Of Health And Sustainability) by a systematic research on diners' perspectives about LOHAS and menu-selecting behavior since well-being trend has been a main interest of the media and the food service industry. Also, this study has focused on understanding customers' menu-selecting behavior through a customer interest survey and on customers' interests and verifying factors for healthy food inclination and satisfaction level to give basic information and marketing suggestions for healthful menu. SPSS 12.0 was used for the data analysis, and $x^$-test was carried to make clear the different perspectives about well-being trend LOHAS according to the general characteristics of those polled. Factor analysis was done to menu-selecting behavior. Differences between sampling menu-selecting factors and general characteristics(t-test & ANOVA) were inspected and multiple regression analysis between health inclination and satisfaction level was also conducted. According to the survey, customers' well-being menu selecting behavior showed highly in married women, relatively older people, those with higher general income and higher education. Regression analysis showed that menu-selecting behavior influenced customers' inclination toward health and satisfaction level. Therefore, the food service industry should target those groups and improve its promotional communication strategy with proper menu development and an improved concept.

• Journal of Korean Academy of Nursing
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• v.29 no.4
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• pp.977-990
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• 1999

This study was done to examine the relationship among psychosocial well-being, perceived health status and health promoting lifestyle practices, and to Identify those variables affecting a health promoting lifestyle. Three hundred and forty five ruddle-aged adults completed a multiple self-reported questionnaire on psychosocial well-being, perceived health status and health promoting lifestyle profile. Data analysis were conducted by using Pearson correlation coefficients, t-test, ANOVA, Scheffe test and stepwise multiple regression nth SAS program. The results are as follows : 1. The average item score for psychosocial well-being was low at 55.98, the level of perceived health status was moderate at 5.76, and health promoting lifestyle practices were low at 110.09. Among the subscales of the health promoting lifestyle profile, stress management and self-actualization were scored higher than exercise and health responsibility. 2. Performance of health promoting lifestyle was positively correlated with perceived health status and negatively correlated with psychosocial well-being. Also, negative correlations were observed between perceived health status and psychosocial well-being. 3. There were statistically significant differences for health promoting lifestyle, psychosocial well-being and perceived health status according to sociodemographic variables. The performance of health promoting lifestyle was significantly different according to education, economic status and marriage satisfaction. Psychosocial well-being was also significantly different according to education, marriage satisfaction, and exercise. Perceived health status was significantly different according to education, occupation, and economic status. 4. Perceived health status, psychosocial well-being, marriage satisfaction and level of education together explained 21.62% of varience in the performance of health promoting lifestyle. These findings help to clarify relationships among psychosocial well-being, perceived health status, and health promoting lifestyle practices in middle-aged adults. Therefore, the result of study provide clues for encouraging people to adopt healthier lifestyles and constructing alternative strategies for promoting health practices.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.5
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• pp.660-670
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• 2016

This cross-sectional descriptive investigation attempted to identify the relationship among the symptoms, spiritual well-being, and depression experienced by patients undergoing hemodialysis. Data were collected from 146 patients at 6 hemodialysis clinics from October 15th, 2014 to January 15th, 2015. The Dialysis Symptom Index (DSI) was used to measure symptom experience, spiritual well-being was measured using the Spiritual Well-being Scale, and depression was assessed using the Center for Epidemiologic Studies Depression Scale (CES-D). The data were analyzed using ANOVA, the t-test, Scheffe's test, Pearson correlation, and hierarchical regression analysis. The mean score of the symptom experience was 26.43 (range: 0~85), the mean spiritual well-being score was 47.79 (range: 20~80), and the mean depression score was 10.56 (range: 0~35). It was found that greater existential well-being leads to lower depression (r=-.23, p=.004) and symptom experience (r=-.17, p=.045). Greater physical (B=.09) and emotional (B=.64) symptom experience leads to higher depression and the explanatory power of these factors was 52.1% (F=18.54, p<.001). Therefore, a comprehensive nursing intervention that can help reduce the symptom experience and increase the existential well-being in hemodialysis patients is needed to reduce their depression.