• Korean Journal of Adult Nursing
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• v.25 no.5
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• pp.567-573
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• 2013

Purpose: The purpose of this study was to compared two methods for measuring fluid intake and to assess the most effective method. Methods: Data from 44 hospitalized patients with chronic kidney disease was analyzed. Two methods were used. The liquid method is to measure the daily intake of water in the form of pure water or some other beverage and IV fluid, the liquid-solid method is to measure the daily intake of water which enters by the oral route and IV fluid. Results: The daily intake of fluid was 1483.10mL and 2245.99mL respectively. The fluid output was 1883.72 mL. The Intra-Class Correlation (ICC) between the liquid method and the liquid-solid method and fluid output was 0.64 and 0.69, respectively. The correlation between differences of fluid in two methods and body weight change was r=.47 (p<.001) and r=.56 (p<.001), respectively. Conclusion: The results of this study suggest that there are no difference between the two measuring methods as to reflecting the most close value to fluid output. And the difference between intake and output by two methods is correlated with body weight change. Therefore, it can be suggested that the either method could be useful as patients' fluid intake measurement.

• Journal of the Korean Geotechnical Society
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• v.31 no.9
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• pp.17-27
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• 2015

We perform a series of experimental tests to evaluate whether the shear strength of clean sands can be reliably predicted from shear wave velocity. Isotropic drained triaxial tests on clean sands reconstituted at different relative densities are performed to measure the shear strength and bender elements are used to measure the shear wave velocity. Laboratory tests reveal that a correlation between shear wave velocity, void ratio, and confining pressure can be made. The correlation can be used to determine the void ratio from measured shear wave velocity, from which the shear strength is predicted. We also show that a unique relationship exists between maximum shear modulus and effective axial stress at failure. The accuracy of the equation can be enhanced by including the normalized confining pressure in the equation. Comparisons between measured and predicted effective friction angle demonstrate that the proposed equation can accurately predict the internal friction angle of granular soils, accounting for the effect of the relative density, from shear wave velocity.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.3
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• pp.509-517
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• 2016

This study examined the influence of patient safety culture and safety care activities of general hospital nurses. The participants were 178 nurses working in a hospital in D and G cities. Data were collected from June to July, 2015 through Questionnaires that included the Measure of Patient Safety Culture by Kim et al.(2007), and the Measure of Safety Care Activities by Lee(2009). The collected data were analyzed by descriptive analysis, t-test, One-way ANOVA, Pearson correlation coefficients, and stepwise Multiple regression. A statistically significant positive relationship was observed between the nurses perception of the patient safety culture and their safety care activities (r=.407, p<.001). The findings show the patient safety culture accounted for 43.3% of the variance in the safety care activities for hospital nurses followed by the importance of hospital work environment among nurses to improve the safety care activities. These findings highlight the need to develop effective programs to improve the perception of patient safety culture and safety nursing guideline.

• The Korean Nurse
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• v.32 no.3
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• pp.68-87
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• 1993

This study was designed to investigate the family burden, family home care needs and to identify the relationship between family burden and home care needs for families of psychiatric in-patients. The subjects for this study were 104 family members of psychiatric in-patients at two private hospitals and one municipal hospital. The data were collected during the period from February 1. 1993 to March 30. 1993. The questionnaire developed by Montgomery to measure the family burden was used as modified by the research team for this study. The questionnaire was developed by Garrad to measure the home care need was also used as modifed by the research team. The data was analyzed using descriptive statistics, t-test, ANOV A and Pearson Correlation Coeffcient. with the SPSS program. The Result of this study can be summarized as follows ; 1. For perceived family burden, the meanscore as measured by the guestionnaire was 70.6 of a possible to total of 110. 2. For home care need. the meanscore as measured by the questionnaire was 44.8 fo a possible total of 66. 3. The results showed a higher score for cases from the municipal hospital for family burden and a higher score for cases at the private hospitals for home care need. 4. Ther was a statistically significantly higher score on family burden for female family member (T =-2.77. P<.05) and for bereaved family members. (F=2.862. p<.05) 5. There was a statistically significantly higher score (F= 10.3535, P<.001) for family burden when the hospitalization period was between 7~ 12 months and a statistically significantly higher score (F =7.679.P<.001) for home care need when the hospitalization period was over 37 months. 6. Ther was a significant correlation between family burden and home care need. (r=.4002, P<.05) The conclusion that can be drawn from this study is that addressing home care needs would contribute to reduce family burden.

• Journal of Korean Library and Information Science Society
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• v.46 no.1
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• pp.65-81
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• 2015

Altmetircs is the new method to measure social impact of research result which couldn't be found by traditional way, through measuring how much research result is reacting to social media. As academic communication has been diverse and OA repository which can preserve diverse type of article has been activated, New paradigm that measure impact of articles through multifaceted and complex way has been started. This study considers background, status of application, pros and cons about altmetircs. And by using Impactstory which is open source based tool, analyses the research output about digital library of Korea, china and japan which is published in international journal. Besides, analyses correlation between Altmetricss and citation rates. As results, "saved" shows higher than "cited" in library research analysis, it means that even though articles are not cited by followed study, there are a lot of articles that has saved in reference management tool. And positive correlation(r = 0.718) exists between "saved" and "cited", it can be inferred that Altmetricss complement the bibliometrics based evaluation system. Meanwhile, Korean researches are saved more in reference management tool than other countries.

• Journal of the Institute of Electronics and Information Engineers
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• v.50 no.2
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• pp.210-220
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• 2013

Recently, as we move toward a society with an increasingly aged population, wearable U-health devices in various shapes with smart wear have been developed in order to conveniently measure health variables without using hands in daily life or at home. However, the problem is that only supply of the wearable U-health devices is focused and its applicable devices are studied and developed, which has resulted in lack of awareness of importance of performance evaluation. In this study, two electrodes were fabricated using conductive fabric which can be used as electrode if attached to wearable U-health devices or smart wear in order to measure ECG signal. Two electrodes those were fabricated using conductive fabric were compared the correlation, impedance and CMRR with patch typed Ag-AgCl electrode-normally used for measurement of ECG signal, so that the study would find out if the fabricated electrode can be used with the wearable U-health devices by testing and evaluating performances.

• Journal of The Korean Association For Science Education
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• v.15 no.1
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• pp.116-125
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• 1995

This study is to consider hypotheses with integral view on the respect of creative thinking. Subjects of this study are Korean students in the 5th grade who participated in the Field Trip Contest of the second Korean Youth Science Festival, an openended inquiry investigation. Objectives of this study are as follows: 1) to measure the inquiry level of the Field Trip Contest activity 2) to find how many hypotheses were made on different types in the inquiry investigation 3) to measure the quality level of hypotheses made in the scientific inquiry investigation 4) to find out the correlation between the 1st and 2nd hypotheses and the final activity score in the two staged scientific investigation In the consequence of it, inquiry level of the Field Trip Contest was very high with good activity topics and openended way of investigation. Hypotheses were made in the prediction, plan, and conclusion parts in the field trip activity report. They used hypothesis-as-prediction typed statements(3.41/team) more than hypothesis-as-explanation(1.28/team) and descriptive hypothesis(0.03/team) types. Content-related hypothesis(5.03/team) and process-related hypothesis(6.16/team) were usually coupled each other. Most of them had difficulties in hypothesis-from-evidence(0.31/team, 10/32 teams) in the comparison of hypothesis-from-simple conjecture(10.62/team). The quality level of content-related hypotheses(0.74point/statement) and process-related hypotheses(1.98point/statement) were very low by the hypothesis-quality scale(Quinn and George, 1975) for the content-related hypotheses and the process-related hypothesis quality scale developed in this study. There was considerable correlation between the activity score and the 1st and 2nd hypothesis in the 2 staged inquiry investigations with the 2nd and 3rd topics($0.41{\ast}$, $0.59{\ast}{\ast}$ repectively).

• Korean Journal of Applied Biomechanics
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• v.27 no.2
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• pp.133-140
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• 2017

Objective: The purpose of this study was to determine the relationship between center of pressure (CoP) and local stability of the lower joints, which was calculated based on approximate entropy (ApEn) during walking in elderly women. Method: Eighteen elderly women were recruited (age: $66.4{\pm}1.2yrs$; mass: $55.4{\pm}8.3kg$; height: $1.56{\pm}0.04m$) for this study. Before collecting data, reflective marker triads composed of 3 non-collinear spheres were attached to the lateral surface of the thigh and shank near the mid-segment to measure motion of the thigh and shank segments. To measure foot motion, reflective markers were placed on the shoe at the heel, head of the fifth metatarsal, and lateral malleolus, and were also placed on the right anterior-superior iliac spine, left anterior-superior iliac spine, and sacrum to observe pelvic motion. During treadmill walking, kinematic data were recorded using 6 infrared cameras (Oqus 300, Qualisys, Sweden) with a 100 Hz sampling frequency and kinetic data were collected from a treadmill (Instrumented Treadmill, Bertec, USA) for 20 strides. From kinematic data, 3D angles of the lower extremity's joint were calculated using Cardan technique and then ApEn were computed for their angles to evaluate local stability. Range of CoP was determined from the kinetic data. Pearson product-moment and Spearman rank correlation coefficient were applied to find relationship between CoP and ApEn. The level of significance was determined at p<.05. Results: There was a negative linear correlation between CoP and ApEn of hip joint adduction-abduction motion (p<.05), but ApEn of other joint motion did not affect the CoP. Conclusion: It was conjectured that ApEn, local stability index, for adduction/abduction of the hip joint during walking could be useful as a fall predictor.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.6
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• pp.2767-2772
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• 2013

Balance is the foundation for all active daily livings. Evaluation of balance has been conducted to measure postural sway of center of pressure(COP). The purpose of this study is to introduce the Balancia and to examine the validity and inter-, intra-reliability for measure of balance with stroke patients. COP was measured by Wii balance board. The subjects Participated in this study were 39 stroke patients. Intra- and inter-reliability was examined using intraclass correlation coefficient(ICC) with 95% confidence interval. In the result of intra- and inter-reliability, all COP parameters of postural sway showed high to very high reliability with ICC=.793-.939 and ICC=.791-.955. Validity was determined by correlation with Accusway force plate. There were high validity with ICC=.851-.955 between tools. According to these results, the Balancia showed high validity and reliability. It is a useful clinical tool for evaluating balance in stroke patients.

• Journal of muscle and joint health
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• v.21 no.3
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• pp.184-194
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• 2014

Purpose: The purpose of this study was to develop and validate a diabetes management self-efficacy scale for older adults (DMSES-O). Methods: A preliminary DMSES-O of 22 items was derived from a literature review and seven domains of self-management behaviors. Content validity was confirmed by experts in diabetes self-management education. To test the reliability and validity of the DMSES-O, data were collected from 150 older adults with type 2 diabetes. The data were analyzed using exploratory factor analysis, and Cronbach's ${\alpha}$ and Pearson's correlation coefficients were calculated. Results: From the exploratory factor analysis, 17 significant items in six subscales were derived. Factors derived were named "problem solving for hypoglycemia and self-monitoring blood glucose," "problem solving for hyperglycemia," "coping with psychological distress and taking medication," "reducing risks of diabetes complications," "appropriate exercise," and "healthy eating." The criterion-related validity of the DMSES-O was established by its correlation with the Summary of Diabetes Self-care Activities Questionnaire. Cronbach's ${\alpha}$, a measure of internal consistency, was .84 for the overall scale and ranged from .54 to .80 for the subscales. Conclusion: The DMSES-O is a reliable and valid instrument to measure selfefficacy for diabetes self-management among older adults.