• 대한가정학회지
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• 제39권12호
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• pp.37-50
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• 2001

The purpose of this study was to explore a causal model of mother's parenting and children's locus of control to self-control in elementary school children. The subjects were 582 children of 4th, 5th and 6th grade. The instruments were Self-Control Rating Scale for Children, Locus of Control Scale for Children and Parenting Scale. The major findings of this study were as follows. 1) Children's locus of control, mother's warmth-acceptance and permissiveness-nonintervention , mother's education level and children's sex predicted children's self-control. 23% of the variance of children's self-control was explainer by these variables. 2) Mother's warmth-acceptance had a direct and an indirect positive effect through children's locus of control on children's self-control and was the first contribution factor. Children's locus of control had a first direct effect on children's self-control. 3) Mother's permissiveness-nonintervention had a direct and an indirect negative effect through children's locus of control on children's self-control. Mother's education level had a direct and an indirect effect through children's locus of control on children's self-control. Children's sex had a direct and an indirect effect through mother's rejection-restriction on children's self-control. Mother's rejection-restriction had an indirect effect through children's locus of control on children's self-control. Family income had an indirect effect through mother's parenting on children's self-control. Father's education level had an indirect effect through mother's permissiveness-nonintervention on children's self-control.

• Journal of Animal Science and Technology
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• 제63권2호
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• pp.339-353
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• 2021

This study aimed to assess the causality of different climate variables on the production of whole crop maize (Zea mays L.; WCM) in the central inland region of the Korea. Furthermore, the effect of these climate variables was also determined by looking at direct and indirect pathways during the stages before and after silking. The WCM metadata (n = 640) were collected from the Rural Development Administration's reports of new variety adaptability from 1985-2011 (27 years). The climate data was collected based on year and location from the Korean Meteorology Administration's weather information system. Causality, in this study, was defined by various cause-and-effect relationships between climatic factors, such as temperature, rainfall amount, sunshine duration, wind speed and relative humidity in the seeding to silking stage and the silking to harvesting stage. All climate variables except wind speed were different before and after the silking stage, which indicates the silking occurred during the period when the Korean season changed from spring to summer. Therefore, the structure of causality was constructed by taking account of the climate variables that were divided by the silking stage. In particular, the indirect effect of rainfall through the appropriate temperature range was different before and after the silking stage. The damage caused by heat-humidity was having effect before the silking stage while the damage caused by night-heat was not affecting WCM production. There was a large variation in soil surface temperature and rainfall before and after the silking stage. Over 350 mm of rainfall affected dry matter yield (DMY) when soil surface temperatures were less than 22℃ before the silking stage. Over 900 mm of rainfall also affected DMY when soil surface temperatures were over 27℃ after the silking stage. For the longitudinal effects of soil surface temperature and rainfall amount, less than 22℃ soil surface temperature and over 300 mm of rainfall before the silking stage affected yield through over 26℃ soil surface temperature and less than 900 mm rainfall after the silking stage, respectively.

• 한국지능시스템학회:학술대회논문집
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• 한국퍼지및지능시스템학회 2004년도 추계학술대회 학술발표 논문집 제14권 제2호
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• pp.192-196
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• 2004

This paper proposes an alternative observation scheme, T-S fuzzy model based indirect adaptive fuzzy observer. Nonlinear systems are represented by fuzzy models since fuzzy logic systems are universal approximators. In order to estimate the unmeasurable states of a given nonlinear system, T-S fuzzy modeling method is applied to get the dynamics of an observation system. T-S fuzzy system uses the linear combination of the input state variables and the modeling applications of them to various kinds of nonlinear systems can be found. The adaptive fuzzy scheme estimates the parameters comprising the fuzzy model representing the observation system. The proposed indirect adaptive fuzzy observer based on T-S fuzzy model can cope with not only unknown states but also unknown parameters. In the process of deriving adaptive law, the Lyapunov theory and Lipchitz condition are used. To show the performance of the proposed observation method, it is applied to an inverted pendulum on a cart.

• 한국지능시스템학회논문지
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• 제14권7호
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• pp.927-933
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• 2004

This paper proposes an alternative observation scheme, T-S fuzzy model based indirect adaptive fuzzy observer. Nonlinear systems are represented by fuzzy models since fuzzy logic systems are universal approximators. In order to estimate the unmeasurable states of a given nonlinear system, T-S fuzzy modeling method is applied to get the dynamics of an observation system. T-S fuzzy system uses the linear combination of the input state variables and the modeling applications of them to various kinds of nonlinear systems can be found. The adaptive fuzzy scheme estimates the parameters comprising the fuzzy model representing the observation system. The proposed indirect adaptive fuzzy observer based on T-S fuzzy model can cope with not only unknown states but also unknown parameters. In the process of deriving adaptive law, the Lyapunov theory and Lipchitz condition are used. To show the performance of the proposed observation method, it is applied to an inverted pendulum on a cart.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2004년도 ICEIC The International Conference on Electronics Informations and Communications
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• pp.348-353
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• 2004

This paper proposes an alternative observation scheme, T-S fuzzy model based indirect adaptive fuzzy observer. Nonlinear systems arc represented by fuzzy models since fuzzy logic systems arc universal approximators. In order to estimate the unmeasurable states of a given nonlinear system, T-S fuzzy modeling method is applied to get the dynamics of an observation system. T-S fuzzy system uses the linear combination of the input state variables and the modeling applications of them to various kinds of nonlinear systems can be found. The adaptive fuzzy scheme estimates the parameters comprising the fuzzy model representing the observation system. The proposed indirect adaptive fuzzy observer based on T-S fuzzy model can cope with not only unknown states but also unknown parameters. In the process of deriving adaptive law, the Lyapunov theory and Lipchitz condition are used. To show the performance of the proposed observation method, it is applied to an inverted pendulum on a cart.

• 한국가족관계학회지
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• 제23권1호
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• pp.139-156
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• 2018

Objectives: The purpose of this study is to examine the impact of solution- focused thinking on middle-aged married women's role adjustment and life satisfaction through positive emotions. Method: The subjects of this study is middle-aged married women who reside in an urban community in South Gyeongsang Province. As for data analysis, SPSS 22.0 and AMOS 21.0 are employed. Results: The findings of the study were as follows: First, concerning the relationships of the variables, there were significant positive correlations among all the solution-focused thinking, positive emotions, role adjustment and life satisfaction. Second, solution-focused thinking had significant direct effect on positive emotions, and role adjustment. Solution-focused thinking had significant indirect effect on role adjustment through the medium of positive emotions at the same time. Solution-focused thinking had a significant indirect effect on life satisfaction through the medium of positive emotions and role adjustment. Positive emotions had no direct effect on life satisfaction but had a significant indirect effect on it through the medium of role adjustment. Conclusions: The findings of the study conclude that solution-focused thinking exercised an indirect influence on life satisfaction through the medium of positive emotions and role adjustment made it possible to find a way to provide solution-focused counseling for clients to lead a more satisfactory life.

• Journal of the Korean Data and Information Science Society
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• 제18권2호
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• pp.401-409
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• 2007

This paper addresses a performance evaluation model for ERP system's implementation using Analytic Network Process (ANP) technique. In this study, the performance variables are identified as the perspectives of cost, business process, systems operation, and change management, respectively. The empirical study also investigated factors that affect the performance variables to find out the causal relationship between them using the ANP approach. The data for the empirical analysis were collected from manufacturing companies that have implemented ERP systems. The research findings indicate the proposed model is powerful in proposing that the indirect relationship between influencing factors and managerial effectiveness, mediated by employee satisfaction, is an important one.

• 대한가정학회지
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• 제32권1호
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• pp.47-58
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• 1994

The purpose of this study were to investigate the independant influence of variable related to the managerial satisfaction and casual relation between variables. For this purposes the data were collected through the questionnaire whose respondent were 448 housewives. The major results of this study were as follows; 1. The variables influenced independently to the managerial satisfaction were wife's age income perceived time pressure time planning time management strategies. 2. Among all varialbles affecting the managerial satisfaction income time planning and time management strategies had direct effect. And household size employment status and educational level had indirect effect.

• 한국정보시스템학회지:정보시스템연구
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• 제10권1호
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• pp.279-301
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• 2001

This study was examined empirically the relationship between exogenous and endogenous variables to use internet shopping malls. Exogenous variables in our model are retrieval simpleness, quality of order treatment, web reputation, update and system quality and endogenous variables are perceived usefulness, perceived ease of use and intention of using internet shopping malls. The results of the path analysis are shown as follows. All exogenous variables have a direct effect on perceived ease of use while both retrieval simpleness and update has a direct effect on perceived usefulness. The perceived ease of use has a direct effect on the intention of using internet shopping malls and has a indirect effect on the intention through perceived usefulness. Especially, web reputation among the exogenous variables has the strongest impact on the perceived ease of use and retrieval has the strongest impact on the perceived usefulness.

• 대한가정학회지
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• 제27권1호
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• pp.181-194
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• 1989

This study examined the characteristics of the relationship of HOME, socio-demographic variables and children's intellectual and social abilities. The subjects of this study were 80 children at age four and their mothers. Instruments included inventory of home stimulation (HOME) and the inventory of socio-demographic variables and K-Binet scale, social naturation scale, and the social-emotional developmental rating scale. The results obtained from this study were as follows: 1. HOME, socio-demographic variables had a significant positive correlation (.37∼..66) with children's intellectual ability. 2. HOME, Socio-demographic variables had a significant positive correlation(.26∼..67) with children's social ability. 3. The variables that significantly predicted children's intellectual ability were play materials, breadth of experience and quality of langage environment. 4. The variables that significantly predicted children's social ability were play materials, economic status of the home and parent education. 5. The results of the causal model showed that the kind of variables that affected children's intellectual ability directly were direct stimulation, parent's education, indirect stimulation, and the emotional climate of the home. 6. The results of the analysis of the causal model showed that the kind of variables that affected children's social ability directly were direct stimulation, parent's education, economic status of the home.