• Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
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• 2000.06a
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• pp.243-250
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• 2000

In the partial lubrication regime, the roughness effects are most important due to the presence of interacting asperities. An average Reynolds equation using flow factors is very useful to determine effects of surface roughness on partial lubrication. In this paper, the pressure flow factors for Gaussian and non-Gaussian surfaces are evaluated in terms of kurtosis. The effect of kurtosis on pressure flow factor is investigated using random rough surface generated numerically. The pressure flow factor increases with increasing kurtosis in partial lubrication regime(h/$\sigma$<3). As h/$\sigma$increases, the pressure flow factor approach to 1 asymptotically regardless of kurtosis.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.28 no.6
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• pp.396-399
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• 2015

We analyzed the correlation between breakdown voltage(BDV) of liquid nitrogen(LN2) and factors. The chosen factors affecting the breakdown are the diameter of electrode, gap length, temperature of LN2, and pressure of LN2. The BDV of LN2 was increased with increasing the diameter, the gap length and the pressure. And The BDV of LN2 was increased with decreasing the temperature. However, correlation coefficient was different from each other depending on the situation. The BDV exhibited a very high correlation coefficient of 0.92227 to dependence on the diameter. And a very high correlation coefficient of 0.94980 to dependence on the pressure under sphere(D 7.5 mm)-plane electrode. When the pressure is applied, sphere-plane electrode is the correlation coefficient was higher than that of the needle-plane electrode. It shows the dependence of a temperature coefficient of -0.758290 ~ -0.39946 under needle-plane electrode.

• Journal of Korean Clinical Health Science
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• v.5 no.3
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• pp.915-924
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• 2017

Purpose. The purpose of this study was to investigate the influence of emotional intelligence, ego-resilience and communication competence in nursing students. Methods. Data was collected from a group of 146 nursing students by means of self reported questionnaires about emotional intelligence, ego-resilience and communication competence in nursing students from the period between February 18, 2017 to March 19, 2017. Results. There were positive correlations between emotional intelligence, ego-resilience and communication competence. Factors influencing the communication competence of nursing students were ego-resilience (${\beta}=.42$, p<.001), Academic achievement (${\beta}=.38$, p=.003)and emotional intelligence (${\beta}=.24$, p=.026). These factors explained 54.8% of the variance in the participants' communication competence (F=60.15, p<.001). Conclusions. In conclusion, strategies for increasing emotional intelligence and ego-resilience of nursing students' ego-resilience, should be developed to improve the communication competence of nursing students.

• International Journal of Advanced Culture Technology
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• v.6 no.2
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• pp.30-35
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• 2018

In contemporary society, neglected families increase adolescents' maladjustment behaviors, causing academic problems, psychological and emotional problems, and showing flight behavior. By identifying the nature of the protective factor against the dangerous environment of a neglected family and increasing the protection factor for the children in a dangerous environment, it is necessary to create the environment so that the young can grow up positively rather than adversely. The purpose of this study is to identify the characteristics of adolescents who are psychologically adaptive at the level of general family children among the adolescents who are in a dangerous environment. The results showed that self - esteem, ego - resilience, ego - identity, and community variables had a significant effect on discriminating adolescents who showed high psychological adjustment from risk factors of neglect while controlling other factors. SPSS 20.0 was used to analyze the data.

• IE interfaces
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• v.15 no.3
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• pp.297-307
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• 2002

Since the pressure for recycling has been increasing, the disassembly, which is pre-process of recycling, has been becoming very important process. The goal of disassembly for recycling is to separate different materials to the greatest extent with least effort. DFD (Design for Disassembly) is a design philosophy for improving product designs for simpler or less costly disassembly operations. This paper proposes a new DFD methodology that can estimate the standard disassembly time and evaluate the disassemblablity of parts. We select some determining and influencing factors related with disassembly process, and estimate the assembly time using motion analysis. By the levels of the determining and influencing factors, the disassemblability is evaluated, and finally, the tables that include the time and score of disassembly are suggested.

• Health Policy and Management
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• v.11 no.3
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• pp.121-150
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• 2001

This study was conducted to investigate provider's behavior change after releasing the information on the Cesarean section rate. Claims data filed at the National Health Insurance Corporation was used for this analysis and the focus of this study was the change of cesarean rate after the public disclosure of information. Average rates of the year 1999 and 2000 were compared, on the institutional basis, and range and coefficient of variation were estimated. For the last decade, Cesarean section rate has been increased dramatically. Clinical or demographic factors could not adequately explain the increase. Instead, nonclinical factors, such as financial incentive, physician's convenience, practice characteristics, etc., were more significant in explaining the increasing rate. Providers' behavior was significantly affected by the public release of information: after the release, average rate was decreased by 10.2%, and variations were also decreased. In particular, the extent of decrease was explained mainly by nonclinical factor rather than clinical ones. The results suggest that disseminating practice information to providers and consumers could contribute to reducing unnecessary medical service.

• Journal of Korea Association of Health Promotion
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• v.2 no.1
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• pp.71-76
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• 2004

The Metabolic syndrome is a constellation of lipid and non-lipid factors of metabolic origin. The presence of any 3 of the following factors is considered sufficient for diagnosis : hypertension(BP <130/85mmHg), low HDL-cholesterol (<40mg% in men, <50mg% in woman), high triglyceride(>150mg%) and abdominal obesity(abdominal girth >102cm in men, 88cm in woman). The major adverse consequence of the metabolic syndrome is cardiovascular disease. Several studies have shown an association between metabolic syndrome and increased cardiovascular events. In Korea, the prevalence of the factor of metabolic syndrome has been increasing since 20 years previously when the Korean economy began to grow rapidly, with a resultant change in lifestyle, toward that of western countries. Thus, the management of the metabolic syndrome is an important social and medical issue in terms of the national health problem. This review will consider each factor in turn, providing insight for health care providers in an effort to prevention of cardiovascular events and maintenance of quality of life in persons with metabolic syndrome was discussed.

• Research in Community and Public Health Nursing
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• v.21 no.2
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• pp.210-219
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• 2010

Purpose: The study evaluated the determinants of caregiving self-efficacy among dementia caregivers. Methods: Data were collected through a structured questionnaire survey from dementia sufferers and caregivers by nurses or social workers caring for dementia sufferers at health centers during July to September 2007. Multiple stepwise regression analysis using SAS Version 9.1 was performed to examine the determinants of caregiving selfefficacy. Results: Factors affecting caregiving self-efficacy were behavioral and psychological symptoms of dementia (BPSD), activities of daily living (ADL), and age of dementia sufferer. Conclusion: To increase dementia caregivers' self-efficacy, there is a need to reduce difficulties of dementia caregivers in caring BPSD and increasing the ADL level of dementia sufferers by providing guidelines of care and intervention programs for BPSD and ADL management.

• Proceeding of Spring/Autumn Annual Conference of KHA
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• 2009.11a
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• pp.257-262
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• 2009

In green building certificated housing complex, although various planning factors in terms of 'Energy resource and Environmental impact' were adopted, the residents' consciousness for their economical and psycholgical effect has not been found. Therefore, the purpose of this study was to find out the usability of environment-friendly factors, with regard to the aspects of 'energy resource and environment impact' and residents, consciousness for them in order to provide the useful information to design the user-oriented green building house complex better than previous ones. the finding were summarized as follows: 1)Increasing awareness of 'green building certificated housing complex', Resident should feel contribution to the environment. 2)When mass housing planning, the development of sensible certification is required. 3)Green building certificated housing complex should change from 'certification for the Financial compensation' to 'certification for the Contribution to the environment'.

• Journal of Environmental Impact Assessment
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• v.21 no.3
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• pp.461-468
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• 2012

In general, long-term changes of ecological factors take a pulse form in which they interact with other factors and go through a repeated increasing and decreasing cycle. The coupling of the two approaches the grid model and the box model in ecological modeling can lead to an in-depth understanding of the environment. The study analyzes temporal variations of major storages with an energy system model that formulizes effectively the relationships among nutrients, phytoplankton, and zooplankton in the Yellow Sea and the East China Sea. An increase of light intensity and standing stock of nutrient increase the magnitude and frequency of pulsing. Also, an immense reduction of nutrient concentration can cause extinction of the pulsing and bring about a steady state. It is concluded that the nutrient loads in freshwater discharge from the Yangtze affect the cycles of major ecological components as well as water quality variables and play an important role in the marine ecosystem.