• 한국전산유체공학회지
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• 제21권2호
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• pp.99-105
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• 2016

The present study has been carried out to analyze the flow characteristics with geometric shape and control conditions in subsea by-pass valve. The function of by-pass valve is to prevent reverse flow. In this study, the static analysis has been perform for analyzing fluid flow in open state. In order to consider the turbulent effect, the standard ${\kappa}-{\varepsilon}$ model was used. A variety of parametric studies, such as by-pass valve type or size, volume flow rate, leakage hole size, leakage hole position, block type, block shape, were performed. The pressure difference across the valve in the model broadened the flow channel cross-sectional area was greater than the base model for the same operating conditions. As the pipe diameter in the block decreases the pressure difference is greatly increased. The pressure difference according to block shape such as edge type and round was almost negligible. For the same Reynolds number the pressure difference was little changed according to the size of the valve.

• 지역사회간호학회지
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• 제27권3호
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• pp.202-212
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• 2016

Purpose: The purpose of this study is to examine the association of family support, self-efficacy, health literacy and perceived health status with health-promoting behavior (HPB) in married immigrant women. Methods: A cross-sectional based survey was conducted to collect data from married immigrant women living in Gyeongsang province. Questionnaires included Health promoting lifestyle profile II, General self - efficacy scale, Korean Health literacy assessment and perceived health status. Results: 157 subjects participated in the study (mean age, $30.47{\pm}6.83$). Their duration of living in Korea was $63.05{\pm}50.11$ months. Of the participants, 59.2% were Vietnamese. The level of HPB, perceived health status, health literacy, support of family and self-efficacy were $2.58{\pm}0.42$, $3.39{\pm}0.86$, $25.12{\pm}20.99$, $3.83{\pm}0.70$ and $3.61{\pm}0.53$ respectively. Factors affecting the HPB of the participants were support from family (${\beta}=.45$, p<.001) and self-efficacy (${\beta}=.16$, p<.05). The explanatory power of these two variables was 34.2%. Conclusion: This study suggests that the factors influencing the HPB of married immigrant women include support from family and self-efficacy. A variety of programs should be provided for families so that they can support those women to help them increase their HPB. It is recommended that more various programs be provided to increase their self- efficacy.

• 한국실내디자인학회논문집
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• 제15권5호
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• pp.130-140
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• 2006

The purpose of this study was to compare the houses of Richard Meier and those of Mario Botta to identify the features of their houses. To identify the features of their houses through comparison, it was most important to understand the influences of their masters on them. Based on the lessons they learned from their masters, their houses were compared and analyzed. The findings were as follows. First, both their houses illustrated the principle and language of Le Corbuiser. They extended the principle and language of Le Corbuiser with their own thoughts and ideas and applied those to their houses. Second, the difference between their houses arose from the influence of Louis Kahn and Carlo Scarpa on Botta and the influence of Mies van der Roeh on Meier. Botta who was taught by Kahn and Scarpa was able to develop his expressive and heavy style of brick house, while Meier who was influenced from Mies was distinguished for his cold, transparent, sleek and contemporary style of house. Third, they both showed outstanding abilities to integrate the principles and languages of their masters in their own creative ways, when developing their own styles of houses. While Volume of Corbuiser, skills and languages of Kahn and Scarpa were put together in Botta's house, the Corbuiser's feature of sectional variety and the Mies' feature of sleek and transparency were overlapped in Meier's house. Fourth, while new expression shown in Botta's house was achieved in the process of integrating the languages of Kahn and Scarpa, new expression shown in Meier's house was created mostly in the process of taking and applying materials and languages from contemporary times.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2007년도 춘계학술대회
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• pp.515-518
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• 2007

Gas hydrates are ice-like crystalline compounds that form under low temperature and elevated pressure conditions. Recently, gas hydrates present a novel means for natural gas storage and transportation with potential applications in a wide variety of areas. An important property of hydrates that makes them attractive for use in gas storage and transportation is their very high gas-to-sol id ratio. In addition to the high gas content, gas hydrates are remarkably stable. The main barrier to development of gas hydrate technology is the lack of an effective mass production method of gas hydrate in solid form. In this study, some performance comparison among several cases classified by different volume sizes of solution were carried to identify the characteristics due to the volume increment. And it is found that one of the main reasons disturbing hydrate formation is related to the lack of cooling heat transfer due to the volume increase of the solution. So, three kinds of heat transfer plates which have different shapes and cross sectional areas were made and tested for the performance comparison following to the shape and area of each plate. Finally it is clarified that the heat transfer is one of the major factors effecting hydrate formation performance and the installation of heat transfer plate can enhance the formation performance especially not in terms of the quantity but the speed.

• 기술혁신학회지
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• 제19권3호
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• pp.634-657
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• 2016

본 연구는 기업의 지식재산 전유방법 중 특허와 영업비밀의 상호관계를 '기업혁신조사' 자료를 활용하여 실증분석하였다. 다수의 선행 이론연구에서는 특허와 영업비밀 활용을 상호대체적인 관계로 가정하여 논의되어 왔다. 그러나 특허와 영업비밀의 활용은 다양한 기업 및 혁신특성에 따라 상호보완적 및 상호대체적으로 활용될 수 있다. 본 연구에서는 기업 산업 혁신 특성 통제 후 기업의 특허와 영업비밀 선택에 대한 상호관계를 2005, 2008, 2010, 2012, 2014년 횡단면 자료를 활용하여 분석하였다. 분석결과 2010년 이전에는 특허와 영업비밀이 상호보완적으로 활용되는 것으로 나타난 반면, 2014년 자료에서는 특허와 영업비밀이 상호독립적으로 활용되는 것으로 나타났다. 그러나 분석결과가 2012년 이후 조사방식의 변화로 인해 나타났을 가능성을 배제할 수가 없어 추가적인 분석을 하였고, 설문조사 차이점의 영향을 완전히 배제할 수는 없지만, 최근 나타난 특허와 영업비밀 활용 선택의 상호독립적인 결과는 2010년 이후 늘어난 특허출원 건수 및 기업들이 다른 전유방법들 보다 특허활용에 보다 중점을 둔 것이 원인일 수 있음을 보였다.

• 한국산학기술학회논문지
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• 제13권6호
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• pp.2664-2671
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• 2012

본 연구는 노인들의 신체적 특성이 보행 속도에 어떠한 영향을 미치는지 알아보기 위하여 시행되었다. 연구대상자는 보조도구의 사용에 관계없이 독립보행이 가능한 노인 77명(남 38명, 여자 39명)을 대상으로 하였다. 상관분석과 단계적 다중 선형 회귀분석을 사용하여 신체적 특성(연령, 성별, 신장, 체중, 신체질량지수, 근육량, 허리/엉덩이둘레비, 심박수, 폐활량, 유연성, 최대산소섭취량, 눈감고 한발 서기)과 하지 근력(슬관절 신전근, 슬관절 굴곡근)이 보행 속도와 어떠한 관련성이 있는지 분석하였다. 보행 속도는 연령, 신장, 폐활량, 눈감고 한발 서기 시간, 슬관절 굴곡근 및 신전근의 근력과 상관관계가 있었다. 또한 슬관절 굴곡근에 의해 보행 속도는 27%로 설명력을 가지고 있었으며, 슬관절 신전근 변수가 추가되었을 때 설명력은 32%로 높아졌다. 이러한 결과는 노인의 보행 속도가 하지의 근력과 다양한 신체적 특성에 영향을 받는다는 것을 의미한다.

• 대한간호학회지
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• 제24권4호
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• pp.529-544
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• 1994

For most parents their child's illness and hospitalization is strssful. Internal stress and over anxiousness leads to uncertainty. Parents have a variety of ways of coping when faced with such stress factors, especialy when the child has cancer. The purpose of this study was to examine the relationship between uncertainty in illness and mastery and coping styles in parents of pediatric cancer patients, and further to identify differences between three groups of subjects. A cross-sectional descriptive correlational design was used in this study to investigate the relationship among the three groups. The sample was composed of 59 parents of children with cancer in pediatric wards in three hospitals in Seoul : 21 in Group 4 with a child newly diagnosed with cancer : 25 in Group B, with a child under treatment and rehospitalized with a relapse : and 13 in Group C, with a child with a terminal cancer, A formalized questionnaire which included demegrapic information and consisted of 75 items was used in this study ; The Parent Perception of Uncertainty Scale(PPUS) adapted form Mishel’s Uncertainty in Illness Scale, Pearlin & Schooler's Mastery Scale(MS) and Folkman & Lazarus’s Ways of Coping Checklist(WCC) were used to measure the variables : uncertainty in illness, mastery, and coping styles. A pretest was conducted on the questionnaire items for reliability. The results gathered were analyzed using SPSS /PC/sup +/. Data analysis included descriptive correltional statistics such as ANOVA, Pearson Correlation Coefficient, amd chi square test. The conclusions of this analysis are summarized as follows : 1. A higher level of uncertainty was seen among parents of children with terminal cancer. 2. The first hypothesis that uncertainty in illness would differ among the three groups was supported(F=4.182, P=.020). The second and third hypotheses that mastery and coping styles would differ among the three groups were not supported. There was a correlation between uncertainty, mastery, and coping styles which was positive, also there was a positive correlation between mastery and coping style(r=.3744, P<.001) but a negative correlation between uncertainty md mastery(r=-.4749, P<.01). From the above results, it can be concluded that prediciting and controlling uncertainty in illness by considering coping styles and mastery are necessary for improved, efficient nursing interventions.

• Journal of Preventive Medicine and Public Health
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• 제45권3호
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• pp.181-187
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• 2012

Objectives: Serum uric acid levels have been reported to be associated with a variety of cardiovascular conditions. However, the direct association between uric acid levels and metabolic syndrome remains controversial. Thus, we evaluated the association of serum uric acid levels and metabolic syndrome in a community-based cohort study in Korea. Methods: We performed cross-sectional analysis of baseline data of 889 males and 1491 females (aged 38 to 87) who participated in baseline examinations of the Korean Genome and Epidemiology Study: Kanghwa study. Blood samples were collected after at least an 8 hour fast. Uric acid quartiles were defined as follows: <4.8, 4.8-<5.6, 5.6-<6.5, ${\geq}6.5$ mg/dL in males; and <3.8, 3.8- <4.3, 4.3 - <5.1, ${\geq}5.1$ mg/dL in females. Metabolic syndrome was defined by the National Cholesterol Education Program Adult Treatment Panel III Criteria with adjusted waist circumference cutoffs (90 cm for males; 80 cm for females). The association between serum uric acid quartiles and metabolic syndrome was assessed using multivariate logistic regression. Results: The odds ratio for having metabolic syndrome in the highest versus lowest quartiles of serum uric acid levels was 2.67 (95% confidence interval [CI], 1.60 to 4.46) in males and 2.14 (95% CI, 1.50 to 3.05) in females after adjusting for age, smoking, alcohol intake, body mass index, total cholesterol, HbA1c, albumin, ${\gamma}$-glutamyltransferase, blood urea nitrogen, and log C-reactive protein. The number of metabolic abnormalities also increased gradually with increasing serum uric acid levels (adjusted p for trend < 0.001 in both sexes). Conclusions: Higher serum uric acid levels are positively associated with the presence of metabolic syndrome in Korean males and females.

• Asian Pacific Journal of Cancer Prevention
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• 제16권4호
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• pp.1479-1485
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• 2015

Background: Even after completion of conventional treatment, breast cancer survivors continue to exhibit a variety of psychological and physical symptoms, affecting their quality of life. The study aimed to investigate the relationship between socio-demography, medical characteristics and health-related quality of life (HR-QOL) of a sample of breast cancer survivors in Malaysia. Materials and Methods: This pilot cross-sectional survey was conducted among breast cancer survivors (n=40) who were members of Breast Cancer Support Group Centre Johor Bahru. A validated self-administered questionnaire was used to identify the relationships between socio-demography, medical characteristics and HR-QOL of the participants. Results: Living with family and completion of treatment were significant predictive factors of self-rated QOL, while living with family and ever giving birth significantly predicted satisfaction with health and physical health. Psychological health had moderate correlations with number of children and early cancer stage. Survivors' higher personal income (>MYR4,500) was the only significant predictor of social relationship, while age, income more than MYR4,500 and giving birth significantly predicted environment domain score. Conclusions: The findings suggested the survivors coped better in all four HR-QOL domains if they were married, lived with family, had children and were employed.

• Journal of Preventive Medicine and Public Health
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• 제35권3호
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• pp.214-220
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• 2002

Objectives : To investigate the relationship of serum uric acid to cardiovascular risk factors in Korean male workers. Methods : We screened 522 male workers at an electrical manufacturing company by a periodic health examination and a questionnaire survey in 2000. We collected data relating to age, smoking status, alcohol drinking status, body mass index (BMI), blood pressure, serum lipid, fasting blood glucose and serum uric acid. The data were analyzed using a variety of methods, including ANOVA, Pearson's correlation, and multivariate regression analyses. to examine the association between uric acid and cardiovascular risk factors with a cross-sectional study design. Results : The concentration of serum uric acid showed positive associations with BMI, total cholesterol, triglyceride, and LDL-cholesterol; it was also significantly correlated to systolic and diastolic blood pressures. Life-style characteristics, such as smoking and alcohol drinking showed no significant association. From the multivariate regression analyses, BMI, total cholesterol and fasting blood glucose levels were found to be independent positive predictors of uric acid; while age, blood pressure and smoking status give no independent contribution explaining the variability of serum uric acid levels. Conclusions : This study demonstrates that serum uric acid level have a significant association with cardiovascular risk factors, such as BMI, total cholesterol and blood glucose in some Korean male workers.