• Journal of Korea Water Resources Association
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• v.50 no.7
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• pp.441-453
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• 2017

Water distribution networks (WDNs) supply drinking water to end users by maintaining sufficient water pressure for reliable water supply in normal and abnormal conditions. To design and operate WDNs in efficient way, it is required to quantify water supply ability of the network. Various reliability indices have been developed and applied in this field. Most of the reliability indices are calculated based on the energy within a network; that is, the total energy entered the network, the energy dissipated through water supply process, and the energy finally supplied at the nodes, etc. This study explains the energy composition in WDNs and introduces three well-known reliability indices developed based on the energy composition of the network. The three indices were applied to a study network under various demand loading scenarios that could occur in real-life operation practices. This study aimed to investigate the applicability of the reliability indices under abnormal scenarios and proposed to illustrate the spatial distribution of the system reliability in more intuitive way for proper responses to the abnormal situations.

• Journal of the Korean Home Economics Association
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• v.47 no.9
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• pp.101-110
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• 2009

The purpose of this study was to examine the effect for information load on perceived information quality and website quality, and the relationships among perceived information quality, website quality and behavioral intentions in online apparel shopping contexts. The information load theory provided the theoretical framework for this study. The research strategy employed an online experimentation using an apparel mock website. The total of 647 responses were used for data analyses. The model of the study was tested by MANOVA and SEM. The results of MANOVA revealed the effect of information load on perceived information quality and website quality. The medium level of information load was perceived as having more positive information quality and website quality as compared to the low or high level of information load. The findings of SEM revealed the positive effect of information quality on website quailty, the positive effect of website quality on WOM and willingness to pay more, and the negative effect of website quailty on willingness to switch. Online apparel retailers and website designers need to manage information quantity and quality by understanding the importance of information load.

• Journal of Korean Academy of Nursing
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• v.17 no.1
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• pp.52-63
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• 1987

Il-primigravidas who visited antenatal clinic and their husbands were taught lamaze childbirth education by the investigator in the third trimester of pregnancy. Lamaze childbirth educational course consisted of six weekly class totaling twelve hours of instruction. A questionnaire was adminstered to subjects for the evaluation of Lamaze educational Program. 21-questions were rated on a Likert-type scale containing five responses and subjects described the advantages, the disadvantage, and the difficulties of lamaze childbirth education course. The results of the study were as follows; 1. The core contents of lamaze childbirth educational Program were Process of labor, anatomy and physiology of the female body, the care of newborn, maternal-infant attachment, breathing patterns to be used at the appropriate stage of labor, techniques for conscious relaxation of muscles during labor and delivery, and exercise to limber and prepare the body for the work of labor and delivery. All couples understood the above core contents very well and there were not significant differences between the understanding scores of wives and those of husbands (p>0.05). 2. 81.8% of couples Practiced breathing pattern to be used at the appropriate stages of labor one or three times a day and 72.7% of couples practiced conscious relaxation of muscles one or three times a day. 3. The contents of Lamaze childbirth educational program were easy for the couples to understand, and the total length, the amounts and the structures of 6-classes were appropriate. 4. Lamaze childbirth educational program was very useful, necessary, interesting, and successful to achieve the couples' objectives. 5. The couples expressed that they had positive attitude and high self-esteem, and reduced their anxiety on the pregnancy and labor.

• Journal of agricultural medicine and community health
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• v.11 no.1
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• pp.55-63
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• 1986

In general, patients' health seeking behaviours can be affected by three factors ; psychological factor, economic factor and health delivery system. This study was focused on how the psychological factor affect to health seeking behaviour influenced by the various attitude of residents toward medical resources in their community. A total of 306 households were sampled for the investigation among residents of Banwol-Eup which was an industrial city newly developed. The data has been collected by interview method using close ended questionnaire. The major findings are ; 1) the respondents' attitude toward medical institutions in their community has shown negative responses (rate of negative attitude (a) 81.3%- facilities (b) 40.7% medical expenses (c) 21.1%-kindness of employees of medical facilities (d)59.0%- the degree of thorough explanation to patient on medical examination (e) 58.2%-doctors' practical competency). Above all, they have shown negative response on doctors explanation on results of medical examination and doctors' practical competency. 2) The study indicated a significant difference in health seeking behaviour between the group of positive attitude and that of negative attitude. 3) A big difference between the above mentioned two groups was identified as the attitude toward sub dimension of practical competency.

• Child Health Nursing Research
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• v.17 no.3
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• pp.161-166
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• 2011

Purpose: This study was done to examine body satisfaction of children, self-rated health of children and parent-child attachment as perceived by children and their mothers in relation to children's health behavior and to identify factors affecting health behavior of children. Ultimately the purpose of this study was to provide basic data to develop health promotion programs for children. Methods: Participants were 140 couples, 4th grade elementary school students and their mothers residing in Busan. Data collection was done during June 1 and July 31, 2010. The data were analyzed using paired t-test, Pearson correlation coefficients and stepwise multiple regression with PASW 18.0 program. Results: Children and mothers rated body satisfaction of the child differently. Children's responses for body satisfaction of child and parent-child attachment were associated with health behavior of children. Self-rated health perceived by children was also a factor affecting health behavior, as were body satisfaction perceived by children and mothers' perception of body satisfaction of child in that order. These variables explained 18.2% of the total variances in health behavior of children. Conclusion: The findings indicate that body satisfaction and self-rated health of children are important variables to target within intervention research and treatment programs for health promotion behavior of children at home and school.

• Journal of Chest Surgery
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• v.32 no.11
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• pp.971-977
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• 1999

Background: Immunologic and inflammatory responses of cardiopulmonary bypass(CPB) influence postoperative mortality and morbidity with multiple organ injury. It has been reported that ischemia/reperfusion induced-myocardial injury during CPB is causative of release of inflammatory cytokines such as interleukin-6(IL-6) and tumor necrosis factor-$\alpha$ (TNF-$\alpha$). The purpose of this study was to detect the time course of the activated cytokine and troponin-T(TnT), and to examine the correlation between such parameters during CPB. Material and Method: The serial samples were collected from arterial blood via radial arterial catheter in 23 patients who are underwent open heart surgery (OHS) with CPB, the IL-6, TNF-$\alpha$ and TnT were checked. Result: \circled1 IL-6, TNF$\alpha$- and TnT concentration increased significantly during CPB with a peaking level of CPB-off (p 0.05). \circled2 IL-6 had highly positive correlation with aortic cross clamping time and total bypass time(r=0.80, 0.78; p 0.05, respectively). \circled3 There was no correlation among IL-6, TNF-$\alpha$ and TnT. Conclusion: In conclusion, these data showed that elevated production of serum IL-6 during CPB was attributable to ischemia/reperfusion induced-myocardial damage. IL-6 will become a new and sensitive biological marker in assessment of myocardial damage during OHS with CPB. However, further studies will be needed to apply IL-6 in more patient population.

• Journal of the Korean Society of Clothing and Textiles
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• v.34 no.1
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• pp.138-152
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• 2010

This study investigates the actual hospital-clothes consumption experience of consumers according to gender and age. An all age survey was conducted among male and female ex-patients in Korea nationally. From data collected during April and May 2009, a total of 513 responses were analyzed using descriptive statistics, chi-square analysis, two-way ANOVA, and MANOVA using SPSS 10.1.4. The results are as follows. The hospitalization ratio was higher in the male group than in the female group and increased with age. Many hospitalizations were taken to the department of orthopedics, internal treatment, obstetrics and gynecology, and surgery. The satisfaction with patient gowns was low regarding size, fabric touch, color and pattern, Psychological comfort, and holistic satisfaction, Specifically, the stiffness of the fabric, cheerless colors, and the limited number of sizes were the main complaints; size dissatisfaction was expressed strongly by females. About 35% of respondents showed a positive attitude to wear premium patient gowns. Various medical supplies were used and different items were utilized according to gender and age of patients. Uncomfortableness of medical supplies were highly related to laundry and fabric touch.

• Journal of Korean Public Health Nursing
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• v.8 no.1
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• pp.84-102
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• 1994

This study was conducted to provide basic policy of home care service centered on early discharging patients from general hospitals. This subjects for this study were 291 discharging patients from university hospital in Chon-ju area. The data were collected during the period from July 1, 1993 through July 16, 1993. The measurement tools were developed based on 9 categorized human responses patterns suggested by NANDA and modified by the research team. The collected data were processed with SPSS/PC + frequency, percentage and mean were used for analysis. From the study, the following summerized conclusions have been drown. A. For home care needs, the mean was $19.0\%$ of possible to total 100 and in a range of $6.2\~39.5\%$ 1. Exchanging Pattern: $17.8\%$ 2. Communication Pattern: $8.6\%$ 3. Relating Pattern : $15.4\%$ 4. Valuing Pattern: $13.4\%$ 5. Choosing Pattern : $6.2\%$ 6. Moving Pattern : $22.9\%$ 7. Perceiving Pattern: $16.5\%$ 8. Knowing Pattern : $30.8\%$ 9. Feeling Pattern : $39.5\%$ B. Response to home care services, 1. $85.6\%$ of subjects didn't hear about home care service. 2. Over $90.0\%$ subjects approved home care service. 3. $83.5\%$of subjects were willing to use home care service. 4. $85.9\%$ of subjects will follow to early discharge order. On the basis of this findings, further studies are required to compare home care needs between patients, their family and community health people groups. And also required to develop to information strategies for home care nursing service.

• Journal of the Korea Concrete Institute
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• v.24 no.1
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• pp.79-86
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• 2012

Though steel reinforcing bars are the most widely used tensile reinforcement, corrosion problems are encountered due to the exposure to aggressive environments. As an alternative material to steel, the fiber reinforced polymers have been used as reinforcement in concrete structures. However, bond strength of FRP rebar is relatively low compared to steel rebar. It has been reported that fibers in matrix can resist crack growth, propagation and finally result in an increase of toughness. In this study, high-strength concrete reinforced with structural fibers was produced to enhance interfacial bond behavior between FRP rebar and concrete matrix. The interfacial bond-behaviors were investigated from a direct pullout test. The test variables were surface conditions of GFRP bars and fiber types. Total of 54 pullout specimens with three different types of bars were cast for bond strength tests. The bond strength-slip responses and resistance of the bond failure were evaluated. The test results showed that the bond strength and toughness increased according to the increased fiber volume.

• 한국지구과학회:학술대회논문집
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• 2005.09a
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• pp.304-314
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• 2005

The present study aims to develop animation module-based teaching-learning materials for a unit of middle school 3rd grade science, which contains the movement of the solar system, through the utilization of various forms of multimedia elements. The developed materials consist of 12 in total flash animation modules covering ‘movement of the Earth,’ ‘movement of the Moon,’ movement of the Planets,‘ etc. To analyze the student responses to the science classes to which the developed animation modules were to be applied, the researcher selected for subjects two third-grade classes that were made up of 60 students and later divided for an experimental group and a control group in a middle school located in Jeonju. The experimental group was treated with the animation module-based lessons developed in the present study while the control group was taught in the traditional teacher-centered ways. Tests for the science-related attitudes of the two groups were administered and the results showed that the mean score of the experimental group was significantly higher than the mean score of the control group (p<0.05) in the categories of ‘interest’ and ‘scientific attitude’. It was thus believed that the animation module-based teaching has a positive effect on the categories of ‘interest’ and ‘scientific attitude’. To assess the qualitative dimension of the developed materials, the researcher subjected them to the utilization of the 30 local science teachers and afterwards a survey was done with the 8 crucial items taken from the WBI evaluation test developed by Multimedia Education Support Center in 1998. The result was broadly positive in terms of lesson design and from a technological point of view.