• Journal of Korean Academy of Nursing Administration
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• v.23 no.1
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• pp.8-17
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• 2017

Purpose: The aim of this study was to analyze the effects of incivility experienced by clinical nurses on their job stress, and to identify the moderating effects of self-efficacy on the relationship between job stress and incivility. Methods: A structured self-report questionnaire was used to measure job stress, incivility and self-efficacy. Data were collected from 140 nurses currently working in three general hospitals of more than 300 beds. Data were analyzed using descriptive statistics, ANOVA, Scheffétest, Pearson correlation coefficient, hierarchical multiple linear regression with the SPSS Version 19.0 program. Results: Incivility from supervisors, patients and patients' families showed a significant effect on job stress and self-efficacy had an effect on incivility from patients and patients' families and also incivility from doctors and job stress. These variables have total explanatory power of 46.6% on job stress. Conclusion: The results indicate a need to recognize the seriousness and damage of incivility in order to reduce hospital nurses' job stress and to awaken nurses to the relationship of stress and incivility and establish institutional programs to combat incivility. Moreover, there is also a need to improve self-efficacy on the ward through hospital education and coaching.

• Korean Journal of Childcare and Education
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• v.16 no.5
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• pp.87-103
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• 2020

Objective: This study controlled the SES(Socio Economic Status) in order to compare the influence of infants' nonverbal communication ability and teachers' sensitivity on the infants' adjustment to child care centers. Methods: For this study, data was collected 115 mothers with one-year-olds'(58 boys, 57 girls) and from 115 teachers from fourty-eight child care centers located in Seoul and Gyeonggi Provincet data. The collected data were analyzed by correlation analysis, hierarchical multiple regression analysis using the SPSS 23.0 program. The results of this study are as follows. Results: First, infants' adjustment to child care centers showed a statistically significant relationship with infants' nonverbal communication ability and teachers' sensitivity. Second, among the variables explaining infants' adjustment to child care centers, the effect of teachers' sensitivity was higher than the effect of infants' nonverbal communication ability. Conclusion/Implications: This study confirmed that teachers' sensitivity is a strong factor explaining infants' adjustment to child care centers. We also emphasized the importance of the role of teachers, providing basic data on the development of education for child care teachers and education for improving sensitivity.

• The Transactions of the Korea Information Processing Society
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• v.3 no.5
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• pp.1198-1206
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• 1996

This paper proposes the functionality of communication network management which operates in central control station of satellite communication network, which will be constructed to DAMA-SCPC ground station using KORE ASAT. And communication network configuration components are classified with hierarchical structure in order to efficiently maintain communication network operation management, and configuration components that are classified into graphic objects and this graphic objects are visualized with tree structure which can be handled uniformally and efficiently. In addition to that, this paper proposes expression method of graphic object to implement our real time communication network management system, and the real time communication net-work management composed as client-server system. The performance of the proposed algorithm is analyzed through the computer simulation.

• Journal of Communications and Networks
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• v.7 no.3
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• pp.377-384
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• 2005

The purpose of this research is to develop and evaluate a traffic engineering architecture that uses local state information. This architecture is applied to an Internet protocol radio access network (RAN) that uses multi-protocol label switching (MPLS) and differentiated services to support mobile hosts. We assume mobility support is provided by a protocol such as the hierarchical mobile Internet protocol. The traffic engineering architecture is router based-meaning that routers on the edges of the network make the decisions onto which paths to place admitted traffic. We propose an algorithm that supports the architecture and uses local network state in order to function. The goal of the architecture is to provide an inexpensive and fast method to reduce network congestion while increasing the quality of service (QoS) level when compared to traditional routing and traffic engineering techniques. We use a number of different mobility scenarios and a mix of different types of traffic to evaluate our architecture and algorithm. We use the network simulator ns-2 as the core of our simulation environment. Around this core we built a system of pre-simulation, during simulation, and post-processing software that enabled us to simulate our traffic engineering architecture with only very minimal changes to the core ns-2 software. Our simulation environment supports a number of different mobility scenarios and a mix of different types of traffic to evaluate our architecture and algorithm.

• Journal of Communications and Networks
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• v.12 no.6
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• pp.558-567
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• 2010

In this paper, we analyze the capability of satellite broadcasting systems to offer different levels of quality of service (QoS). We focus on the European telecommunications standards institute satellite digital radio and digital video broadcasting satellite handheld (DVB-SH) standards, which have recently been proposed for satellite broadcasting communications. We propose a strategy to provide different levels of QoS for the DVB-SH standard on the basis of an extension of the interleaving scheme, referred to as molded interleaver, which supports low latency service requirements for interactive services. An extensive analysis based on laboratory measurements shows the benefits of this solution. We also present a multilevel coding (MLC) scheme with multistage decoding designed for broadcasting communications as an alternative to the existing standards, where services with different levels of QoS are provided. We present a graphical method based on mutual information for the design and evaluation of MLC systems used for broadcasting communications. Extensive simulations for a typical satellite channel show the viability of the proposed MLC scheme. Finally, we introduce multidimensional constellations in the proposed MLC scheme in order to increase the number of different protection levels.

• Journal of Families and Better Life
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• v.24 no.2 s.80
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• pp.149-163
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• 2006

The purposes of this study were to explore ecological variables that affect family functions and to analyze relative magnitudes of significant predictors. The study employed ecological model. Data were collected from 143 mothers of mildly handicapped children enrolled in integrated kindergartens in Seoul, Korea. The results of the study were as follows : 1. The level of family functions with mildly handicapped children were found to be moderate(M=3.21, SD=.49). 2. The hierarchical regression analysis yielded Model V as the most powerful model, explaining 79%$(Adjusted\;R^2=.787)$ of the variance. 3. The most powerful predictors throughout Model I to V were found to be maternal efficacy $({\beta}=.578,\;p<.001)$, maternal satisfaction with parent-education and counseling programs $({\beta}=.249,\;p<.001)$, husband's helps $({\beta}=.207,\;p<.01)$, and the availability of assistance other than family members $({\beta}=.232,\;p<.05)$ in the order.

• The Journal of Korean Academic Society of Nursing Education
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• v.22 no.4
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• pp.504-513
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• 2016

Purpose: The purpose of this study was to identify the mediating effect of self-efficacy in the relationship between emotional intelligence and clinical performance in nursing students. Methods: Data were collected through structured questionnaires between March 1 and March 25, 2016. Study participants were 223 fourth year nursing students in B and K metropolitan city. Data were analyzed using t-test, ANOVA, Scheffe' test, Pearson's correlation coefficients, and hierarchical multiple regression with SPSS WIN v 18.0. Results: The mean scores of emotional intelligence was $3.85{\pm}0.43$, self-efficacy was $3.25{\pm}0.40$, and clinical performance was $3.63{\pm}0.51$. There were significant positive correlations between emotional intelligence, self-efficacy and clinical performance. There were partial mediating effect of self-efficacy in the relationship between emotional intelligence and clinical performance. Conclusion: In order to enhance nursing students' clinical performance, strategies for intervention development such as stimulating emotional intelligence and motivation by self-efficacy are necessary.

• Human Ecology Research
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• v.56 no.4
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• pp.361-375
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• 2018

This study recognizes the changes of the father's role and the importance of family mealtimes as well as examines the individual, family and social contexts surrounding the father's family mealtime. This study analyzed the trend of the father's family mealtime frequency and factors affecting them in order to explore the current conditions of their father's work and family balance through family mealtimes. Data from 492 fathers who have school aged children were collected through an online survey. The overall trend of the frequency of father's family meals showed an average of 2.4 breakfasts and an average of 3.2 dinners per week. The frequency of the father's family meals showed statistically significant differences according to the father's age, children's school age, dual income, weekly working hours, working flexibility, leaving on-time and the priority of work and family. The analysis of hierarchical linear regressions was conducted to determine factors affecting the frequency of father's family mealtime to show that the frequency of father's family mealtime was best explained by father's working conditions and perception variables. Working conditions such as working hours, leaving work on time, working flexibility were significant variables in regards to the father's family mealtime frequency. The father's perception towards parental efficacy, wife's support, and work-family priority were significant factors in regards to the father's family mealtime frequency. This study is meaningful in that it provides basic data on policy making for the compatibility of the father's work and family.

• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 2003.10a
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• pp.201-206
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• 2003

In this paper, it is presented a new technique to the design and real-time implementation of fuzzy control system based-on digital signal processors in order to improve the precision and robustness for system of industrial robot. Fuzzy control has emerged as one of the most active and fruitful areas for research in the applications of fuzzy set theory, especially in the real of industrial processes. In this thesis, a self-organizing fuzzy controller for the industrial robot manipulator with a actuator located at the base is studied. A fuzzy logic composed of linguistic conditional statements is employed by defining the relations of input-output variable of the controller, In the synthesis of a FLC, one of the most difficult problems is the determination of linguistic control rules from the human operators. To overcome this difficult, SOFC is proposed fir a hierarchical control structure consisting of basic level and high level that modify control rules. The proposed SOFC scheme is simple in structure, fast in computation and suitable for implementation of real-time control. Performance of the SOFC is illustrated by simulation and experimental results for robot with eight joints.

• Atmosphere
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• v.16 no.4
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• pp.259-267
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• 2006

In the present study, the neural network (NN) model with cluster analysis method was developed to predict storm surge in the whole Korean coastal regions with special focuses on the regional extension. The model used in this study is NN model for each cluster (CL-NN) with the cluster analysis. In order to find the optimal clustering of the stations, agglomerative method among hierarchical clustering methods was used. Various stations were clustered each other according to the centroid-linkage criterion and the cluster analysis should stop when the distances between merged groups exceed any criterion. Finally the CL-NN can be constructed for predicting storm surge in the cluster regions. To validate model results, predicted sea level value from CL-NN model was compared with that of conventional harmonic analysis (HA) and of the NN model in each region. The forecast values from NN and CL-NN models show more accuracy with observed data than that of HA. Especially the statistics analysis such as RMSE and correlation coefficient shows little differences between CL-NN and NN model results. These results show that cluster analysis and CL-NN model can be applied in the regional storm surge prediction and developed forecast system.