• Korean Journal of Environmental Agriculture
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• v.27 no.2
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• pp.105-110
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• 2008

The main purpose of this work is the development of water quality level model using the data such as DO, EC, BOD, $COD_{Cr},\;NH_3-N,\;NO_3-N,\;PO_4-P$, T-N, T-P, and SS in 88 agricultural streams of the Han river watersheds. To grant water quality level for each parameters, it divided into 20% respectively in the order of water quality level. On the basis of the lowest water quality level, water quality of streams was assigned. As the result, number of stream corresponding to Level Ⅰ was 0, Level II was 1 stream, Level III was 3 streams, Level IV was 22 streams, and Level V was 62 streams. By standardized canonical discriminant function coefficient, $NO_3-N$ was the highest in 0.427 at the discriminant power. According to discriminant function for water quality level, it was equal to $-4.648+3.246{\times}[NO_3-N],\;-5.084+3.456{\times}[NO_3-N],\;-4.298+3.067{\times}[NO_3-N],\;and\;-7.369+4.396{\times}[NO_3-N]$ from Level II to Level V, respectively. As a result of test at real data of the Han river watersheds in 2007, the suitability of water quality level model was high to 88.4%.

• The Korean Journal of Nuclear Medicine Technology
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• v.19 no.1
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• pp.44-50
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• 2015

Purpose Quality control used in laboratory help to sustain precision and accuracy consistently to ensure the Diagnostic and treatment for medical employee. To perform an evaluation in statistical manner, it is recommended to use different quality control material than calibrator from manufacturer, quality control material must include analyzed concentration perimeter, must use more than two different concentration materials and recommended to use materials to indicate the concentration in clinical use. However, currently used quality control material has limit of evaluation due to unconsidered concentration or improperly used to get clinical importance data. Therefore, we compared the value of quality control, DIACON Hormone Level 1, 2, 3 (Scantibodies, USA) and DIACON Tumor Level 1, 2, 3 which applied to clinical concentration range. Materials and Methods DIACON Hormone Level 1, 2, 3 (Scantibodies, USA) and DIACON Tumor Level 1, 2, 3 (Scantibodies, USA) that used materials and methods test to compare the result from five RIA testing institution and one institution that used Elecsys (ROCHE) and Architect (ABOTT) for each level. The reagent RIA kit that used in this experiment is followed by Table 2 and 3. Test has performed by instruction itself and follow by instruction. Results Among DIACON hormone result of twenty four items, level 1 have three items, level 2 have four items and level 3 have five items were out of manufacturer set up range based on the average value. Among DIACON tumor result of thirteen items, level 1 have three items, level 2 have four items and level 3 have five items were out of manufacturer set up range. Other result were inside of manufacturer range. Conclusion For quality control material, it is widely available in market, but it is limited for normal range which is only concerned in improper clinical value and difficult to evaluate important concentration area in terms of clinical analyze. In this experiment, we evaluate Hormone twenty three items and Tumor thirteen items with DIACON Hormone and Tumor (Scantibodies, USA) to resolve this limit and we could observe that it ca be substituted and used.

• Communications for Statistical Applications and Methods
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• v.8 no.2
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• pp.383-394
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• 2001

This paper is a generalization of single and two-level skip-lot sampling plans to n-level. On every skipping inspection of the n-level skip-lot sampling plan, not only the number of consecutive lots to be accepted but also the fraction of lots to be inspected can be freely choosed. The general formulas of the operating characteristic function, average fraction inspected, average sample number and average outgoing quality in n-level skip-lot sampling plan are derived. The operating characteristic curves, average sample number and average outgoing quality of a reference plan, two-level and five-level skip-lot sampling plans are compared.

• Korean Journal of Occupational Health Nursing
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• v.21 no.2
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• pp.145-153
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• 2012

Purpose: The purpose of this study was to verify influencing factors on service quality provided by care helpers working for the elderly in long term care. Methods: The data were collected using self-reported questionnaire from 221 care helpers working in long-term care facility or home care service center. The data were analyzed using multiple regression with the SPSS/WIN 17.0 program. Results: There were significant differences in service quality depending on the health status, intimacy level, pleasure level, job education, and turnover intention. Factors influencing service quality were gender, intimacy level with elderly, type of working place and job satisfaction with $R^2$ value of 17.3%. The most influencing factor was intimacy level (${\beta}$=.249), followed by job satisfaction (${\beta}$=.208), gender (${\beta}$=.170), and type of working place (${\beta}$=.146). Conclusion: The results of this study indicate that the effort to improve the service quality of care helper should be focused on helping intimacy building between the elderly and the care helper. Also, a more effective way to improve service quality would be intervening for care helpers providing institutional care.

• The Journal of Korean Society for School & Community Health Education
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• v.19 no.1
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• pp.13-25
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• 2018

Objectives: The purpose of this study was to identify the quality of life of a serious case and to analyze the factors influencing them. A serious disease were limited to cancer, cerebrovascular disease, and cardiovascular disease. Methods: This study used original data from the 6th National Health and Nutrition Survey (2013~2015) and finally extracted 385 persons diagnosed with cancer, cerebrovascular disease and cardiovascular disease among adults over 20 years old. Linear logistic regression analysis was conducted to identify factors affecting the quality of life of this study subjects. Results: The quality of life scores of the subjects were $13.92{\pm}1.54$ points (Highest possible=15). Regression analysis showed that quality of life decreased as age increased, lower income level, lower education level, stress, depression, suicidal ideation. The explanatory power (R2) of the analysis model was 0.170. Conclusions: The results of this study showed that age, income level, education level, stress, depression, and suicidal ideation affect the quality of life of a serious case in the community.

• Proceedings of the KSR Conference
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• 2007.05a
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• pp.1546-1549
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• 2007

A ride quality measurement was carried out for commuter and express train used in airport railway. Lateral and vertical directional average ride quality level is higher than that of longitudinal direction. Because express train is faster than commuter train, the average ride quality level of express train is higher compared to that of commuter train. The average ride quality level of commuter train is between 'good comfortable($100{\sim}105dB$)' and 'very good comfortable(below 100dB)'. The average ride quality level of express train is between 'not comfortable($105{\sim}110dB$)' and 'good comfortable($100{\sim}105dB$)'. In spite of the scheduled speed is higher(more than 70km/h for commuter train, more than 80km/h for express train) than other lines, the ride quality of airport railway train is good. The reason is that there is little gradient in rail and the radius of curvature is larger compared to that of other lines.

• Journal of Korean Academy of Nursing
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• v.32 no.4
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• pp.482-491
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• 2002

This study aimed to identify the change patterns of fatigue and quality of life during consecutive chemotherapies and to determine the relationship of these two variables. Method: Stomach cancer patients receiving chemotherapy were recruited from a university hospital in Seoul. Each chemotherapy, subjects were asked to respond to the questionnaires regarding their fatigue and quality of life. The number of subjects who completed 4 cycles and over was 11. Fatigue was measured with Lee's tool(1999). Quality of life was measured with a tool revised by the author based on Padilla et al(1983). Result: Most patients were in 1st stage(5 patients) or 3rd stage(5 patients). Fatigue was revealed at its highest level in the 3rd or 4th chemotherapy and at its lowest level in the 1st or 6th chemotherapy. A quality of life appeared at its highest level in the 5th or 6th chemotherapy and the lowest level in 3rd or 4th chemotherapy. Conclusion: Among 6 cycles of chemotherapy, in 3-4th chemotherapy the fatigue was the highest and the quality of life were the lowest. Many patients decided to stop treatment at the same period. Therefore we can recognize cancer patients receiving chemo- therapy are in the highest risk at the time of the 3-4 th chemotherapy.

• Journal of the Korean Applied Science and Technology
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• v.40 no.6
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• pp.1488-1497
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• 2023

Friendships play a very important role during high school. However, unstable friendship quality can induce negative problems such as psycho-emotional problems. This problem can be highlighted based on the characteristics of high school girls who consider the psycho-emotional aspects of friendships more than men do. This study was aimed to analyze the effect of level of quality of friendship on the level of smartphone overdependence of female high school students. Study subjects were 51 female high school students attending the W high school in J city. The assessment of quality of friendship was used by Korean ver. of Friendship Quality Questionnaire. The quality of friendship is 21 items, and the higher the score on a 5-point scale, the higher the quality of friendship. The assessment of smartphone overdependence was used by Smartphone Overdependence Scale. Smartphone overdependence has 10 questions, and a high score on a 4-point scale means a high level of smartphone overdependence. As the results, the negative effect (-) of the level of the quality of friendship on the level of smartphone overdependence. These results indicated that if the level of quality of friendship increase, the level of smrtphone overdependence decrease. Thus, in the process of educational and practical approach for the female high school student, these results should be considered and the approach to improve the quality of friendship should be needed. In follow-up studies, it is necessary to expand the range of subjects and compare and analyze them with various subject groups. In-depth analysis studies should be conducted considering various variables that can affect the relationship between smartphone overdependence and the quality of friend relationships.

• The Korean Journal of Rehabilitation Nursing
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• v.7 no.2
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• pp.127-139
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• 2004

Purpose: This study was to investigate the degree of body image, self esteem and quality of life, to identify general and disease of characteristics on influencing this factors with the intention of providing basal data for developing nursing intervention to promote body image, self esteem and quality of life. Method: Subjects of this study were 91 grown-up congenital heart patients over 18 years in 2 tertiary hospitals. The data on body image, self esteem and quality of life were collected through questionnaire from March to April 2004. The data were analyzed by descriptive statistics, t-test, Pearson's correlation, ANOVA and tukey test using SAS for Windows 8.1 program. Result: 1) The mean scores of body image, self esteem and quality of life were 63.01, 25.29 and 496.79. 2) Body image was correlated with age(p=.0239), educational level(p=.0182), diagnosis(p=.0066), number of operation(p=.0148), cyanosis(p<.0001), complication(p=.0096) and NYHA level(p=.0378). 3) Self esteem was correlated with education level(p=.0026), economic level(p=.0240), number of operation(p=.0113) and cyanosis (p=.0006). 4) Quality of life was correlated with age(p=.0432) and diagnosis(p=.0020), number of operation (p=.0063), duration of last operation(p=.0225), cyanosis(p<.0001), complication(p=.0090) and NYHA level(p<.0001). 5) There was significantly positive relationship between body image, self esteem and quality of life. Subjects with more positive body image had higher self esteem(r=.7897, p<.05) and subjects with higher self esteem had higher quality of life(r=.6091, p<.05).

• Proceedings of the Korean Society for Quality Management Conference
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• 2009.10a
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• pp.317-323
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• 2009

In this paper, we propose new methods which is to determine level of noise factor. Even Taguchi give level of noise factor which is best(or maximum) and worst(or minimum) condition, we give level of noise factor which is representative value by observing noise factor frequency. Sometimes level of noise factor is given one, two and three. We know this method is more fit in real fields.