• Journal of the Korean Home Economics Association
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• v.33 no.2
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• pp.113-127
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• 1995

The purpose of this study was to examine the children's adjustment according to the their problems and problem solving pattern in single mother. The data of this study were abtained from 186 children of single-mother. For analysis of data, Factor analysis, t-test, One-way ANOVA, pearson's correlation, Multiple regression were used The results are as follows; 1. The children's problem are composed seven factors that are house life, emotion, school life, peer-relationships, academic achievement, finicial, future life. The family structural variables to have relationship with the children's problem are age, sex, father's absence reason, SES, mother postering attitude. 2. The mean value of children's problem solving pattern such as seeking religion support and passive appraisal was highest. The children's problem solving pattern were affected by mother's fostering attitude. 3. The inadequacy among children in single-mother was related to mother fostering attitude after father's loss, children's problem and children's problem solving pattern that emphasizes the interdependence of each element in this children's adjustment network.

• Journal of the Korean Home Economics Association
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• v.42 no.1
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• pp.133-152
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• 2004

This research aims at investigating the relationships among such variables as internet use, social-ethics, info-ethics, and the needs for info-ethic educational program. Another purpose of this study is to develop the framework for the cyber ethic educational program. For accomplishing the purpose, a survey questionnaire had been administered to 522 respondents online and of nine. The major statistical methods for data analysis were frequencey and t-test. The results of this analysis were as fellows： 1. Such variables as sex, the awareness of social law-ethics and social general ethics increased the awareness of info-ethics. 2. Variables that influenced the needs for info-ethic educational program were internet skills, social general ethics, and net info-ethics. The implications of these findings were discussed. Finally, the cyber ethic educational program was developed by the researcher band on the results of this study.

• Journal of the Korean Home Economics Association
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• v.41 no.4
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• pp.21-33
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• 2003

The purpose of this study was to give early childhood educators information for differentiating internet information services related to early childhood education, and for making more positive educational effect with web information services. The main questions were there were and differences in the levels of information characteristics and the information contents according to the categories of those sites. The subjects were 47 internet sites frequently used by teachers and trained assistants rated them with rating scale. One way ANOVA and t-test were used for data analysis. The results showed that the levels of information characteristics dimensions had differences among the categories of sites. In addition to that the content quality of Portal sites were higher than those of other categories for children users, those of Portal sites and Daum Cafes were higher than corresponding quality of other sites for teachers.

• Proceedings of the KSR Conference
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• 2008.06a
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• pp.2179-2184
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• 2008

The ride comfort is more important according to train speedup. Generally it is defined as the vehicle vibration. There are many studies on evaluation method of ride comfort for railway. But the ride comfort for Korean high speed train(HSR 350x) has been assessed by statistical method according to UIC 513R. In this paper, the ride indices, which are measured in the Korean high speed train, have been analyzed and reviewed by appling the statistical methodology such as t-test, variance analysis(ANOVA) and regression analysis.

• Journal of the Korean Dietetic Association
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• v.6 no.1
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• pp.26-32
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• 2000

The purposes of this study were to assess the importance and performance level of nutrition service in views of industrial employees and to explore the ways to improve the nutrition service quality. A survey of industrial foodservice operations located in Korea was undertaken and detailed information was collected from each, including surveys of 994 industrial employees. Statistical data was analysed by SAS PC 6.04 for descriptive analysis, t-test, and analysis of variance. The whole industrial employees assessed the importance and performance of the dieticians' role on nutrition service as '4.03' and '3.32' out of 5 respectively, which suggests that the industrial nutrition service needs to be improved. The variables which received higher scores than the average mean were safe meal provision, sanitation management and equipment & facilities management, whereas the score of individual nutrition counselling was low compared to other variables of nutrition service. The groups who scored low performance were characterized by labor work, experience with less than 10 years, single, aged below 29 years old, and female.

• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 2009.05a
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• pp.417-420
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• 2009

The hot forming process of a CAM for vessel engine was designed by finite element (FE) simulation and experimental analysis. An aim of process design was to achieve the near-net shaped CAM forgings by hot forging process. Based on the compression test results of the low alloy steel, deformation processing map was generated using the superposition approach between the dynamic materials model (DMM) and flow stability and/or instability criteria. From the processing map, the initial heating temperature was determined as $1200^{\circ}C$. FE analysis was simulated to predict the formation of rolling defects and deformed shape with different forging designs. Optimum process design suggested in this work was made by comparing with the CAM for vessel engine manufactured by actual forging process.

• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 2007.10a
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• pp.42-45
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• 2007

Recrystallization behavior during ingot-breakdown process of Alloy 718 was investigated with finite element analysis and experimental approaches. In order to analyze microstructural changes during the cogging process of an Alloy 718 ingot, the side-pressing and heat treatment tests were performed at different temperatures and ram speed. From the side-pressing and heat treatment test results, it was found that microstructural changes during hot forging of Alloy 718 ingot greatly influenced on a close interaction between dynamic and static-recrystallization behaviors. A recrystallization model of Alloy 718 was used to predict the complex microstructural variation during continuous heating and forging processes of the cogging, and the predicted grain size and its distribution were compared with the actual cogged Alloy 718 billet.

• Special Issue of the Society of Naval Architects of Korea
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• 2011.09a
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• pp.70-74
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• 2011

This paper describes the quay mooring analysis to verify the safety of a moored drillship in typhoon conditions. Mooring system consists of mooring equipments(deck bollards, shore bitts, mooring lines, fenders) to resist the extreme environmental condition. Wind force acting on the drillship is obtained from the wind tunnel test results. The strength of quay mooring system has been checked. The static mooring analysis shows that the designed mooring system satisfies the mooring design criteria. Vertical displacements of the drillship have been calculated considering the dynamic wave motions and static heelings due to the wind force acting on the ship. With the vertical displacements and the hull draft of drillship, the required water depth for quay mooring has been derived.

• Journal of Family Resource Management and Policy Review
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• v.4 no.1
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• pp.47-57
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• 2000

This study was investigated the marital satisfaction of expanding dual-earner couples and it’s influential variables. The sample consisted of 226 husbands and wives in dual-earner families living in Seoul. The data were analyzed by various satistical methods such as Frequency, Percentile, One-way analysis, t-test and Multiple Regression Analysis. The results of this research were as follows: 1. The level of marital satisfaction was higher for husbands than wives. 2. Husbands’marital satisfaction was significantly affected by husbands’age, husbands’sex role attitude, wives’occupation, flexibility of wives’work. 3. Wives’marital satisfaction was significantly affected by husbands’income, husbands’sex role attitude, husbands’participative times of household labor and wives’participative time of household labor.

• Journal of the Korean Home Economics Association
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• v.31 no.4
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• pp.67-81
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• 1993

The purpose of this study was to measure married women's coping behaviors according to support stress. The data of this study were obtained from 545 married women who were daughter and daughter-in-law. For analysis of data, Factor Analysis, GLM, t-test, Regression, Pearson's Correlation. The results are as follows: 1. Coping behaviors were composed seven factors that are Mental Disengagement, Venting of Emotions, Restraint, Seeking Support, Acceptance, Active Coping, Turning to Religion. 2. Among the sociodemographic variables, relation, age of mother(p＜0.01), income, grown place of supporter, living arrangement(p＜0.05) were variables to have influence on the coping behaviors to support stress. 3. There was high correlation between support stress and the coping behaviors. (γ=.4339) 4. There was significant different between the higher group and the lower group of support stress on the coping behaviors.