• Journal of Korean Academy of Nursing Administration
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• v.7 no.1
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• pp.65-84
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• 2001

This descriptive study was designed to find out the relation between nurses' perceptions of job-related empowerment, job satisfaction and organizational commitment. The data was collected from 390 staff nurses in a tertiary hospital located in Seoul during the period of 2 weeks from October 6 to October 19, 2000 by means of structures questionnaire. Five instruments were used in this study included the Job Activity Scale(Laschinger et al., 1994, 1999), the Organizational Relationship Scale(Laschinger et al., 1994, 1999), The Conditions of Work Effectiveness Questionnaire(Chandler, 1986), the Minnesota Satisfaction Questionnaire(Weiss et al., 1967) and the Organizational Commitment Questionnaire(Mowday et al., 1979). The results were summarized as follows: 1) The mean of the CWEQ was 49.56percentile, and the support was perceived higher(56 percentile) than the other subscales, opportunity, information and resources. The mean of the MSQ was 49.4 percentile and the OCQ was 54.02 percentile. 2) Nurses' perception of job related empowerment was significantly related to job satisfaction(r=.650, p<.001), and organizational commitment(r=.458, p<.001). And the job satisfaction was related significantly to organizational commitment(r=.426, p<.001). Job satisfaction(r=.583, p<.001) and organizational commitment(r=.426, p<.001)have higher relation with the opportunity subscales of the CWEQ than the others. 3) The significant difference was found in the nurses' perception of the empowerment, job satisfaction and organizational commitment according to the age group, length of nursing career and ward. 4) Results of the stepwise multiple regression shows that the nurses' perception of the empowerment and organizational commitment explained 52% of job satisfaction, and also, the nurses' perceptions of the empowerment and job satisfaction explained 35% of organizational commitment. In conclusion, nurses' perception of the empowerment, job satisfaction and organizational commitment have a strong relationship. The finding suggests the importance of the empowering nurses to increase job satisfaction and organizational commitment.

• The Journal of Pediatrics of Korean Medicine
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• v.22 no.3
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• pp.25-34
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• 2008

Objectives : The aim of this study was to evaluate the effect to the height-growth after the administration of herbal medicine to the prepuberty children Methods : This clinical study has been carried out with 18 children, who visited to the Department of Pediatrics, Dong-eui oriental medical center from January 2005 to August 2008. They had been treated for height-growth with herbal medicine more than 6 months. This study has been carried out by chart-review to see the effectiveness. Height percentile, BMI and GV(Growth Velocity) after medication was compared with the ones before medication. Results : 1. This clinical study has been carried out with 18 children, 12 boys(66.7%) and six girls(23.3%). Their average age was 10.30 years old. 2. Generally total children's average height percentile was increased compared to after medication. Especially eight of them has significantly increasd height percentile(44.4%). 3. Total children's average GV/6months was also increased after medication. Especially ten of them has significantly increasd GV/6months (55.6%). 4. Total children's average BMI also increased (17.01 to 17.85) after medication. Conclusions : Herbal medicine affects to the growth of pre-puberty children.

• Fisheries and Aquatic Sciences
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• v.11 no.1
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• pp.7-14
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• 2008

The sanitary quality of a shellfish-growing area in Kamak Bay, Korea, was assessed through a bacteriological examination of seawater and oysters from January 2004 to December 2006. From seawater samples collected at 28 stations, the range of geometric mean (GM) and the estimated 90th percentile for most-probable-number (MPN) values of fecal coliforms were <1.8-2.4 MPN/100 mL and 1.8-6.0 MPN/100 mL, respectively. The observed fecal coliform GM and the estimated 90th percentile did not exceed the fecal coliform water quality standards of 14 MPN/100 mL and 43 MPN/100 mL. Therefore, the bacteriological quality of seawater at this shellfish-growing area met the Korean Shellfish Sanitation Program (KSSP) criteria for a growing area used for export. The range of the fecal coliform GM and the estimated 90th percentile MPN values of oyster samples were 19.2-160 MPN/100 g and 20.2-166.9 MPN/100 g, respectively, and the range of the viable cell count was 30-1900 CFU/g. Thus, the fecal coliform value for the oysters and the viable cell count were less than the current shellfish quality standards of 230 MPN/100 g and 50,000 CFU/g, respectively. The bacteriological quality of the oysters complied with the criteria for domestic use and export of shellfish.

• Nutrition Research and Practice
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• v.6 no.6
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• pp.527-533
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• 2012

It is thought that calcium (Ca) and magnesium (Mg) may be related to mental disorders such as depression; however, there have been few studies investigating the association between Ca and Mg nutrition status with depression in middle-aged female adults. Study subjects in this study included 105 women between the ages of 41 and 57 years. The subjects were divided into three groups according to the Zung Self-rating Depression Scale (SDS) score: Group I (SDS score < 33 percentile; n = 32), Group II (33 percentile ${\leq}$ SDS score < 67 percentile; n = 37), and Group III (67 percentile ${\leq}$ SDS score; n = 36). Anthropometric measurements, dietary intake survey using 3-day dietary records, SDS questionnaire and measurement of serum Ca and Mg were obtained and analyzed. No differences were observed in Ca, plant Ca, and Mg intake among the three groups. However, animal Ca intake by Group III was 141.3 mg, which was significantly lower than 207.6 mg by Group I and 198.3 mg by Group II (P = 0.0345). There were no significant differences in serum levels of Ca, and Mg among the three groups. Correlation analysis indicated that the SDS score had negative correlations with Ca intake (r = -0.2927, P<0.01) and animal Ca (r = -0.3411, P<0.001) after adjusting for age, menopause and energy intake. In conclusion, dietary Ca and animal Ca had negative associations with SDS score among middle-aged Korean female adults. Additional analysis of factors related to the association of calcium and magnesium nutritional status and depression is necessary.

• Journal of Korea Water Resources Association
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• v.42 no.1
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• pp.1-8
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• 2009

In this study, based on the major activities which might have affected the ecological system of the Geum River, a conceptual model was proposed to guide scenario development for the eco-hydrological river evaluation. Also, an analysis method employing a set of models consisting, with other supporting programs, of KModSim for watershed network analysis and RAP for ecosystem analysis was developed for eco-hydrological river assessment. Then, hydrological analyses with various scenarios were conducted to examine the flow regime changes expected from the construction and operation of the Youngdam Multipurpose Dam (YMD) and Daecheong Multipurpose Dam (DMD) in the Geum River basin. The results indicated that the "Percentile 10" values for 10% exceeding time were decreased by 20.5% and 8.0% at Sutong downstream of YMD and Gongju downstream of DMD, respectively, while "Percentile 90" values for 90% exceeding time were increased by 56.3% and 340.8% at Sutong and Gongju, respectively, resulting in the reduction of the high flow variability typical for unregulated rivers in Korea. The results of eco-hydrological analyses will be presented in the following papers.

• Journal of the Earthquake Engineering Society of Korea
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• v.22 no.2
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• pp.45-54
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• 2018

The seismically isolated nuclear power plants shall be designed for design basis earthquake (DBE) and considered to ensure safety against beyond design basis earthquake (BDBE). In order to limit the excessive displacement of the seismic isolation system of the seismically isolated structure, the moat is installed at a certain distance from the upper mat supporting the superstructure. This certain distance is called clearance to stop (CS) and is calculated from the 90th percentile displacement of seismic isolation system subjected to BDBE. For design purposes, the CS can be obtained simply by multiplying the median displacement of the seismic isolation system against DBE by scale factor with a value of 3. The DBE and BDBE used in this study were generated by using 30 sets of artificial earthquakes corresponding to the nuclear standard design spectrum. In addition, latin hyper cube sampling was applied to generate 30 sets of artificial earthquakes corresponding to maximum - minimum spectra. For the DBE, the median displacement and the 99th percentile displacement of the seismic isolation system were calculated. For the BDBE, the suitability of the scale factor was assessed after calculating the 90th percentile displacement of the seismic isolation system.

• Korean Journal of Community Nutrition
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• v.13 no.1
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• pp.13-23
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• 2008

This study investigated the association between the weight status of middle school students and the various weight-related characteristics including desired weight, weight perception, weight-related practice, physical activity, and overeating behavior. Questionnaires were administered to 473 middle school students (178 boys and 295 girls) in Daejeon. Boys and girls were divided into three groups respectively; (1) underweight (BMI<$5^{th}$ percentile) (2) normal weight ($5^{th}$ percentile$\leq$BMI<$85^{th}$ percentile) (3) overweight (BMI$\leq85^{th}$ percentile). Using BMI calculated from measured height and weight, 14.0% of boys and 6.8% of girls were underweight, and 16.3% of boys and 14.2% of girls were overweight. However, among this sample of students, 38.4% of boys and 13.6% of girls perceived themselves as underweight and 29.4% of boys and 44.9% of girls perceived themselves as overweight. We found that overweight students reported their body weights lower and their heights higher compared to non-overweight students, resulting in an underestimation of BMI. Based on desired BMI, 79.9% of the girls desired to be underweight and 73.0% of the boys desired to be normal weight. Overweight or normal weight students were less satisfied with their body weights than underweight students. Girls had more weight control experience and concern compared to boys. Overweight girls spent longer times in watching TV compared to non-overweight girls (p < 0.001) and had more overeating behaviors (p < 0.05). Overweight students reported that they ate snacks less frequently than non-overweight students, which may be due to their tendency to report less eating. In conclusion, significant gender differences and weight status differences existed in weight perception, weight satisfaction, and weight control experience and concern. Because perception of overweight is likely to lead to unhealthy eating behaviors and weight control, efforts for adolescents to improve accuracy of weight perceptions and to understand the benefits of being healthier are needed.

• Korean Journal of Community Nutrition
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• v.18 no.5
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• pp.525-538
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• 2013

The purpose of this study was to provide information on obesity assessment for Koreans. Among total of 1012 research papers enlisted in the Korean J Community Nutrition form 1996 to 2011, 248 articles were examined in which subjects were divided into more than 2 groups by obesity rate. About the method of anthropometric data collection, more than half of the research papers examined 52.5% and 28.7% of studies utilized the directly measured data and self-described data, respectively. About the utilization of obesity assessment methods, indirect methods of weight-height index (BMI, BMI percentile, and R$\ddot{o}$hrer index) and PIBW (WLR, Broca index, and KDA) were 62.4% and 23.2%, respectably, and the direct method of percent body fat assessment was only 9.3%. The most frequently utilized methods were WLR in under primary and primary school children, and BMI in the middle and high school students and in adults. For primary school students, WLR was the most frequently utilized method up to 2007, but it changed to BMI percentile afterward. Broca Index was no longer utilized since 2008. There were no articles utilizing BMI percentile and R$\ddot{o}$hrer index for obesity assessment in adults. Criteria for obesity assessment were not consistent among research papers: for example, % body fat, 19~40%; BMI, 20~30; BMI percentile, 85th or 95th. In the case of PIBW, 120% of ideal weight was the most frequently utilized criterion for obesity. Based on these findings, we suggest that proper methods and criteria of obesity assessment for each age group should be determined and proclaimed.

• The KIPS Transactions:PartD
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• v.10D no.6
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• pp.1025-1032
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• 2003

Percentiles are convenient measures of the entire range of values of simulation outputs. However, unlike means and standard deviations, the observations have to be stored since calculation of percentiles requires several passes through the data. Thus, percentile (PE) requires a large amount of computer storage and computation time. The best possible computation time to sort n observations is (O($nlog_{2}n$)), and memory proportional to n is required to store sorted values in order to find a given order statistic. Several approaches for extimating percentiles in RS(regenerative simulation) and non-RS, which can avoid difficulties of PE, have been proposed in [11, 12, 21]. In this paper, we implemented these three approaches known as : leanear PE, batching PE, spectral $P^2$ PE in the context of sequential steady-state simulation. Numerical results of coverage analysis of these PE approachs are present.

• The Journal of Pediatrics of Korean Medicine
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• v.27 no.2
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• pp.20-30
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• 2013

Objectives Sleep is closely related to children's and adolescent's growth. The purpose of this cross-sectional study is to examine the frequency of symptoms associated with sleep in childhood and adolescence and the impact in their growth. Methods This study had used questionnaire targeting 1001 children and adolescents. 532 of them were visited the Department of Pediatrics, the Oriental Medicine Hospital of ${\bigcirc}{\bigcirc}$University located in Dongdaemun-gu, Seoul, during the period between May and September in 2012. 469 of them were students in the lower grades at ${\bigcirc}{\bigcirc}$Elementary School located in Gangnam-gu, Seoul, during June, 2012. We used PASW Statistics 18.0 to analyze the relation between growth and symptoms associated with sleep by using Independent samples t-test, one-way ANOVA, and ANCOVA. Results As the result of this research, snoring(54.9%), sleep bruxism(34.2%), sleep talking(31.5%), sleep terror(17.1%) were most frequently seen as symptoms associated with sleep. Group of habitual snoring($p=0.008^{**}$) and sleep terror($p=0.016^*$) had lower height percentile than other groups. Groups with sleep talking($p=0.022^*$) had lower weight percentile than group without sleep talking. Groups with sleep talking($p=0.018^*$) or sleep walking($p=0.045^*$) had lower BMI percentile, and group with habitual sleep apnea($p=0.039^*$) had higher BMI percentile. Conclusions Symptoms during sleep such as snoring, sleep bruxism, sleep talking, and sleep terror occur frequently among children and adolescents. More importantly, snoring, sleep terror, and sleep talking may be associated with growth of children and adolescents.