• Korean Journal of Social Welfare
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• v.65 no.3
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• pp.107-130
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• 2013

This study conducted a meta-analysis on the studies related with job satisfaction of social workers. For data analysis, journals, theses, and dissertations published between 1990 and 2013 were reviewed systematically. Through this process, this study calculated average effect size of each variable and explored moderator variables. The study results were as follows. First, this study significantly identified 27 variables related with job satisfaction of social workers. Second, the results indicated that large effect size variables included empowerment, organizational climates, supervision, relationship with boss, leadership, social support, work environment, reward system factor, self-esteem, work autonomy. Third, moderator analyses were conducted utilizing characteristics of organization. Moderate effects were identified in the following variables including role conflict, specialization, recognition, promotion, relationship with peer, supervision. Finally, the implications of the study findings were discussed.

• Journal of Korea Water Resources Association
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• v.41 no.2
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• pp.137-147
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• 2008

Critical and allowable shear stress acting on the mattress revetment, is presented in this study. First of all, shear stress at each spot is computed when the hydraulic power act on the waterway. Secondly, median diameter of the filling rocks is computed using shear stress and Shields coefficient which are used to decide the critical motion of the particle. Finally, the range of critical and allowable shear stress is estimated which meet the particle stability and indicated that the mattress is a stable hydraulic structure in comparison with the riprap. Therefore the required median diameter of riprap is three times higher than that of mattress. Contrarily, this study also analyzed that resisting power of mattress to shear stress is three times higher than that of riprap on the same size.

• Journal of the Korean Applied Science and Technology
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• v.37 no.4
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• pp.1008-1019
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• 2020

The purpose of this study is to investigate the effects of social support of students majoring in physical education on their major satisfaction and intention to continue learning, and to prevent dropout of students majoring in physical education in the credit banking system and to find effective management methods. The research tools were verified by confirmatory factor analysis, concentration validity, discriminant validity, average variance extraction (AVE), concept reliability, and Cronbach's coefficient for validity and reliability verification of the research tools. The data processing method was conducted by using IBM SPSS Statistics 21 and IBM AMOS 21 to verify reliability analysis, correlation analysis, and structural equation model (SEM) through frequency analysis, confirmatory factor analysis, concentration validity, discriminant validity, Cronbach's coefficient calculation. The results are as follows. First, the study model was tested and the criteria were met for verifying the suitability of the relationship between social support, major satisfaction and learning persistence intention of the professors majoring in physical education in credit banking system. Second, as a result of the verification of Hypothesis 1, the social support of the professor of the physical education major in the credit banking system has a significant effect on the major satisfaction. The results of the verification of Hypothesis 2 showed that the social support of the professor of the physical education major in the credit banking system affects on the learning persistence. As a result of the verification of Hypothesis 3, it has been shown that major satisfaction has a significant effect on the learning persistence.

• Journal of Convergence for Information Technology
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• v.11 no.7
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• pp.155-163
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• 2021

This study was conducted to identify factors that affect the life satisfaction of college students. The subjects of this study were 191 students from three universities located in one area, and the data collection used self-reported questionnaires. Data analysis was performed using frequency, percentage, mean, standard deviation, Independent T-test, One-way ANOVA, Pearson Correlation Coefficient, and Multiple Regression Analysis. The results of the study showed that significant factors affecting the life satisfaction of the subjects were self-esteem and school life satisfaction, and the explanatory power according to the influence factors was 42.3%. The research results suggest that improving college students' self-esteem and school life satisfaction can help them improve their life satisfaction. Therefore, it is necessary to consider self-esteem and school life satisfaction when developing educational programs to improve the life satisfaction of college students in the future.

• The Korean Journal of Food And Nutrition
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• v.24 no.4
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• pp.732-739
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• 2011

The purpose of the study was to identify the relationship transformational leadership, job satisfaction, and organizational commitment of nutrition teacher(dietitian) in school foodservice organization. A total of 209 employees in school foodservice operation were surveyed using a self-administrated questionnaire. The data were analyzed using SPSS Windows(Ver. 18.0) for descriptive analysis and reliability analysis, correlation analysis, and regression. the respondents were 89.0% female, 90.4% under high school, and 90.4% under contract employment. The transformational leadership factors - Charisma ($p$ <0.001), intellectual stimulation, and individual consideration - had positive effects on job satisfaction and organizational commitment. In conclusion, transformational leadership(Charisma) of dietitian directly contributed to job satisfaction and organizational commitment in school foodservice employees.

• The Journal of the Korea Contents Association
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• v.9 no.2
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• pp.242-251
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• 2009

In this study, we analysed the impact of performing level of CSR-Labor standard index to corporate's expectation level to raise the employee's job satisfaction and morale. Using ordered probit analysis method, corporate higher level of performing CSR-Labor standard index is related with higher expectation of raising the employee's jobs satisfaction and morale on average. Also performing levels of individual index are positively related with expectation level. When using all standard indexes in the analysis, index 3 named "workplace without discrimination" and index 7 named "healthy and safe workplace" have significant coefficients. Therefore we confirmed that corporate making efforts to achieve safe workplace without discrimination has higher expectation to raise the employee's job satisfaction and morale. Finally we concluded that CSR-Labor standard index is properly constructed.

• Proceedings of the Korea Water Resources Association Conference
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• 2021.06a
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• pp.474-474
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• 2021

물순환 과정에서의 증발산량은 필수적으로 고려해야 하는 요소이며, 증발산은 기상학적 인자뿐만 아니라 증발 표면 특성 등 복합적인 요인에 의해서 발생한다. 이러한 이유로 실제증발산의 절대량을 추정하는 것은 쉽지 않으며, 특히 수문학적 관점에서 유역단위의 증발산량을 산정하는 데에는 기술적인 한계가 존재한다. 반면 잠재증발산량과 실제증발산량의 보완관계가설을 활용하면 복잡한 수문모델링을 거치지 않고 팬증발량으로부터 유역의 실제증발산을 산정할 수 있다. 본 연구에서는 관측자료를 기반으로 하여 용담댐 유역의 증발산 보완관계를 검증하고자 한다. 실제증발산량(ETA)은 용담댐 내 덕유산 플럭스 타워의 관측자료를 활용하였으며, 잠재증발산량(ETP)으로는 기상관측소에서 관측한 팬 증발량 자료를 활용하였고 습윤증발산량(ETW)은 Priestley-Taylor 공식을 통해 산정하였다. ETW는 수분이 무제한 공급되는 상황에서의 증발산량으로 정의되며, 동시에 ETA 및 ETP와의 상대적 비율로 스케일화하여 보완관계설정에 활용하였다. 대기의 습윤지수(Moisture Index, MI)는 ETA와 ETP간의 상대적 비율로 정의하였다. 이 때 팬 증발량은 기상 및 주변 환경 조건의 영향을 받아 증발량이 과대추정 되는 경향이 있으므로 보정계수를 적용하여 보정한 값을 활용하였다. 보정계수는 FAO Penman-Monteith 식을 활용한 기준증발산량과 팬 증발량의 기울기로 산정하며, 본 연구에서는 보정계수로 0.77을 사용하였다. 또한 ETW 산정 시 적용되는 Priestley-Talyor 계수(α)는 널리 알려진 값인 1.26 대신 유역의 기상조건을 고려하여 0.99를 적용하였다. α 값의 조정을 통해 증발산 보완관계에 대한 E+의 평균 제곱근 오차(RMSE)가 0.685에서 0.075, Ep+의 경우 0.437에서 0.315로 개선되어 용담댐 유역의 증발산 보완관계가 만족할 만한 수준으로 확인되었다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.17 no.12
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• pp.1391-1400
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• 1992

In this paper, we suggested a method for evaluating the type-I/II error which is proposed by the CCITT as a criterion for the accuracy of policing algorithms in ATM networks, By the analysis of the type-I/II error of the Leaky Bucket(LB) algorithm, we investigated the relationships between the traffic parameters and the LB parameters to police the mean and peak cell rate effectively in the ON/OFF traffic. We showed that the LB parameters, the leaky rate a and the threshold M of the LB counter, could be determined as a pair of (a, M) satisfying the type-I/II error and minimizing the response time. In the ON/OFF traffic, it has been observed that the a-M characteristic curve of the LB policing algorithm only depends on the burstiness. As the results of the performance analysis, we found that the LB algorithm exhibits a good performance in the peak rate policing, but has some problems in the mean rate policing due to the trade-off between the accuracy and the response time.

• Journal of the Korean Data and Information Science Society
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• v.27 no.5
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• pp.1337-1347
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• 2016

This study investigates factors affecting the number of insurance solicitor's turnovers of life insurance companies based on questionnaire about them. Since the response variable which is the number of insurance solicitor's turnovers is count data, it is analyzed by Poisson regression which is one of generalized regression. When work year in current company, which is direct influential factor on the number of insurance solicitor's turnovers, is controlled, affiliated corporation has been found to be the most influential factor. In addition, age, motivation to work as financial planner, monthly income, a number of average new contract per month, and final education have been identified to be important factors. If insurance solicitor's occupant organization is large company, the number of turnovers becomes small, but if the organization is general agent(GA), it becomes larger. When insurance solicitor's age is high, the number of insurance solicitor's turnovers are reduced. If the motivation to become a financial planner is due to acquaintance such as family and relatives, the number of turnovers becomes small.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.3 no.4
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• pp.197-208
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• 1991

A depth-averaged X-Y numerical model with transformed coordinates is developed to analyze the salinity dispersion in estuaries. Simulation of intertidal zones, residual current and closed boundary condition are examined. Especially. the improvements in stability and accuracy of the numerical algorithm are made by adopting fractional step method for the dispersion term of the governing equation. The model being applied to the Keum River Esturary, velocity fields and salinity fields are reproduced satisfactorily and the estimation of the dispersion coefficient with respect to the flow fold is also studied.