• 한국농공학회논문집
• /
• 제47권2호
• /
• pp.99-110
• /
• 2005

Characteristics of concentrations of total nitrogen (TN), total phosphorus (TP), and chemical oxygen demand (COD) pollutant in percolated water at four paddy field sites (Soro, Odong, Munui, and Boeun) were investigated by a nonparametric test. Percolation rate measurement and percolated water sampling were taken during irrigation periods at $5{\sim}10$ day intervals. The normality of percolation rate and pollutant concentrations were examined using histogram, boxplot, and the Kolmogorov-Smirnov (K-S) test. Pollutant concentrations in percolated water showed positively skewed distribution. The median concentrations of pollutant were 1.91 mg/L for TN, 0.021 mg/L for TP, and 6.6 mg/L for COD, which were lower than its arithmetic mean concentrations by $35\%$ for TN, $36\%$ for TP, and $13\%$ for COD. The median concentrations of TN and TP differed significantly among sample sites according to the Kruskal-Wallis test. However, median concentrations were not significantly different among month except for TN and TP of Soro and COD of Odong. The percolation load of pollutants during irrigation periods in the study area were estimated at $3.12{\sim}7.75\;kg/ha$ for TN, $0.033{\sim}0.155\;kg/ha$ for TP, and 10.7 kg/ha for COD, which were much lower than respective values reported in Japan.

• 한국농공학회:학술대회논문집
• /
• 한국농공학회 2005년도 학술발표논문집
• /
• pp.284-287
• /
• 2005

The objective of this study is to check into variation trends of design rainfall according to change of the number of years for observed data. To make comparative study of the relation between design rainfall and recorded year, this study was used maximum rainfall for 24-hr consecutive duration at Gangneung, Seoul, Incheon, Chupungnyeong, Pohang, Daegu, Jeonju, Ulsan, Gwangju, Busan, Mokpo and Yeosu rainfall stations. The tests for Independence, Homogeneity and detection of outliers were used Wald-Wolfowitz's test, Mann-Whitney's test and Grubbs and Beck test respectively. To select appopriate distribution, the distribution of genaralized pareto(GPA), generalized extreme value(GEV), generalized logistic(GLO), lognormal and pearson type 3 distribution is judged by L-moment ratio diagram and Kolmogorov-Smirnov (K-S) test. Design rainfall was estimated by at-site frequency analysis using L-moments and Generalized extreme value(GEV) distribution according to change of the number of years for observed data. Through the comparative analysis for design rainfall induced by L-moments and GEV distribution, relationship between design rainfall and recorded year is provided.

• 한국응급구조학회지
• /
• 제18권3호
• /
• pp.91-104
• /
• 2014

Purpose: This study aimed to confirm the effects of a simulation-based program on knowledge and clinical performance in the post-operative management of emergency patients. Methods: This was a pre- and post-research design with a nonequivalent control group and randomly sampled 29 experimental and control groups, respectively from nursing department juniors for 4 weeks from September of 2014. The experimental group received lectures, team study, team simulation, and debriefing in post-operative management of simulation-based emergency patients and control group conducted in the traditional lecture-type setting. Educational learning effects were measured by using the knowledge and clinical performance measurement tools of 15 and 20 items, respectively. Data were analyzed by using the SPSS program, including frequency, ratio, and results from the Chi-square test, Fisher's exact test, Kolmogorov-Smirnov test, t-test. Results: Our research results indicate that, the experimental group showed significantly higher knowledge and clinical performance score compared with the control group. Conclusion: We confirmed that education on post-operative management of simulation-based emergency patients was an effective educational method to improve the knowledge and clinical performance of nursing students.

• The Journal of Asian Finance, Economics and Business
• /
• 제8권2호
• /
• pp.667-673
• /
• 2021

This causal quantitative research aims to investigate the influence of factors that determine the performance of employees in Indonesian universities. The factors are crucial for organizations in the achievement of their goals. Based on theoretical studies, three independent variables, namely, training, personality, and work motivation were tested for their influence on employee performance, which was the dependent variable. Primary data were obtained from 94 respondents of a total population of 122 individuals at the Education Quality Assurance Institute (LPMP) in Banten Province, Indonesia. They were tested by the normality test using the Kolmogorov-Smirnov approach to ensure their normally distributed population and the linearity test to measure the significant linear relationship between the two variables. There are five hypotheses in this study. Each hypothesis tested by the F-test to determine the significant effect of all independent variables on the dependent variable, and t-test to analyze the effect. The results of this study answered all hypotheses of the research model. There is a positive direct effect of training and personality on work motivation. Both training and personality also affect positively employee performance. Another finding of this study is that employee performance is positively and directly affected by work motivation.

• 한국환경보건학회지
• /
• 제48권5호
• /
• pp.266-271
• /
• 2022

Background: The selection of distributions of input parameters is an important component in probabilistic exposure assessment. Goodness-of-fit (GOF) methods are used to determine the distribution of exposure factors. However, there are no clear guidelines for choosing an appropriate GOF method. Objectives: The outcomes of probabilistic consumer exposure assessment were compared by using five different GOF methods for the selection of input distributions: chi-squared test, Kolmogorov-Smirnov test (K-S), Anderson-Darling test (A-D), Akaike information criterion (AIC) and Bayesian information criterion (BIC). Methods: Individual exposures were estimated based on product usage factor combinations from 10,000 respondents. The distribution of individual exposure was considered as the true value of population exposures. Results: Among the five GOF methods, probabilistic exposure distributions using the A-D and K-S methods were similar to individual exposure estimations. Comparing the 95th percentiles of the probabilistic distributions and the individual estimations for 10 CPs, there were 0.73 to 1.92 times differences for the A-D method, and 0.73 to 1.60 times differences (excluding tire-shine spray) for the K-S method. Conclusions: There were significant differences in exposure assessment results among the selection of the GOF methods. Therefore, the GOF methods for probabilistic consumer exposure assessment should be carefully selected.

• 성인간호학회지
• /
• 제25권4호
• /
• pp.473-482
• /
• 2013

Purpose: The purpose of this study was to investigate the effects of a structured preoperative instruction upon anxiety and postoperative self-care compliance. Methods: A randomized control group pre-post design was used. Sixty subjects undergoing cataract surgery were randomly assigned to one of two groups. The instruction consisted of cataract surgery procedure, sensory information, deep breathing, use of eye drop, and post op self-care regimen and was provided to the experimental group with control group receiving an usual treatment. State anxiety NRS, pulse, BP, and self-care compliance scale developed by Cho & Rho were used. Data were collected at two time periods: on the day of surgery in the clinic and prior to anesthesia in the operating room. The postoperative self-care compliance scores were measured at their second visits to the hospital after surgery. Data were analyzed using Kolmogorov Smirnov test, t-test, and Mann-Whitney U test. Results: There were significant differences between the two groups in the postoperative state anxiety (t=-3.57, p=.001) and the postoperative self-care compliance score (t=3.92, p<.001). There were no significant difference between the two groups in the postoperative blood pressure and pulse rate. Conclusion: The results of this study suggest that the structured preoperative instruction could be a nursing intervention for cataract surgery patients.

• 간호행정학회지
• /
• 제20권5호
• /
• pp.587-598
• /
• 2014

Purpose:This study was conducted to identify the effects of an action learning based creative problem-solving (CPS) course on problem solving, creativity and team-member exchange in nursing students. Methods: A quasi-experimental study applying a non-equivalent control group pre-post design was employed. Sophomore nursing students (32 in the experimental group and 33 in the control group) were recruited from a university in G-city, Korea. Problem solving, creativity and team-member exchange were measured for the pretest and posttest using self-report questionnaires. Kolmogorov-Smirnov test, Chi-square, Fisher's exact test, t-test, and ANCOVA with SPSS/Win 20.0 program were used to analyze the data. Results: The scores for problem solving, creativity and team-member exchange in the experimental group were significantly higher than those of the control group. Conclusion: Results of this study indicate that an action learning based CPS course is an effective teaching method to improve nursing students' competencies. In the future longitudinal studies are needed to assess the long term effects of the course.

• The Journal of Asian Finance, Economics and Business
• /
• 제7권7호
• /
• pp.49-58
• /
• 2020

This paper examines the impact of mergers on the financial performance of the Jordanian banking sector. This paper applies the financial approaches in analysing the effects of mergers on Jordanian banks' performance for two the periods: four years pre-merger and four years' post-merger for the period from 2001 to 2009. The sample of the study solely contains the case of the merger of the Jordan Ahli Bank (AHLI bank) with Philadelphia Bank in 2005. Data are tested for normality using the Shapiro-Wilk Test and Kolmogorov Smirnov test. The financial ratios and a statistical technique as a Mann-Whitney U test were used to assess the significant differences in the financial performance of the selected banks pre- and post-merger by investigating the performance-related financial ratio groups that are expressed by leverage, liquidity, efficiency, and cash flow ratio. The results show that there is an insignificant improvement in the ratios of AHLI bank in the period after the merger, except for the superior result provided by this study indicating that the leverage ratios improved significantly. The reason for the insignificant improvement in financial ratios may be that the post-merger period corresponds to the period of the global financial crisis that began in 2007.

• 한국직업건강간호학회지
• /
• 제25권3호
• /
• pp.188-198
• /
• 2016

Purpose: The present study was conducted to examine the effects of a health counseling program by occupational health nurses on the unemployed visiting the Employment Welfare Plus Center. Methods: The one-group pretest-posttest design was used. The study presented a secondary analysis of the data collected in a health counseling program run by occupational health nurses for the unemployed visiting the Employment Welfare Plus Center. Kolmogorov-Smirnov, Shapiro-Wilk test, ${\chi}^2$ test and Wilcoxon signed rank test were used to analyze 158 data collected between October 5, 2015 and January 5, 2016. Results: After the intervention, the participants showed a significant decrease in the level of stress index (uBioMacpa), stress (discomfort), musculoskeletal pain and depression. In addition, the participants showed a significant increase in self-rated general health, exercise and regular eating behavior. Conclusion: The health counseling program offered by occupational health nurses is an effective intervention to improve the physical and mental health of the unemployed individuals visiting the Employment Welfare Plus Center.

• 한국항공우주학회지
• /
• 제43권12호
• /
• pp.1054-1061
• /
• 2015

민수용 무인항공기의 활용이 확대될 것으로 기대되면서 무인항공기의 항법 정확도와 항법 무결성의 보장에 대한 문제가 중요해지고 있다. 최근 민수용 무인항공기를 대상으로 항법 정확도와 항법 무결성을 보장하는 지역보강항법시스템(Local-Area Differential Global Navigation Satellite System, LADGNSS)의 개념이 제시된 바 있다. LADGNSS는 무인항공기간의 충돌을 방지하기 위한 최소분리거리 정보를 제공하여 무인항공기의 안전을 보장한다. 최소분리거리를 산출하기 위해서는 무인항공기의 비행기술오차(Flight Technical Error)에 대한 정보가 필요한데, 이 오차는 기존 유인항공기 분야에서 평균이 0인 정규분포로 모델링 되어 왔다. 하지만 무인항공기의 경우 유인항공기와 다르게 제어/항법장비나 비행경로 등에 대한 표준이 다변화 될 것으로 예상되며 비행기술오차에 대해서 일괄적으로 평균이 0인 정규분포를 가정하는 것은 무결성 정보 산출 시 과도한 보수성을 야기할 수 있다. 본 연구에서는 비행실험을 통해 무인항공기의 비행기술오차를 수집하고, 해당 오차의 특성을 잘 묘사할 수 있는 Johnson 분포 모델을 이용해 오차를 모델링 하였다. 오차모델에 대한 적합성을 평가하기 위해서 Kolmogorov-Smirnov Test와 Anderson-Darling Test를 수행하였다.