• 한국강구조학회 논문집
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• 제16권4호통권71호
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• pp.407-414
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• 2004

공용중인 교량은 시공시에 비해 이음부재 및 볼트에 각종 하중이 작용하는 상태이고, 시공중에 결함이 발생하였거나 시간이 지남에 따른 각종 결함이 발생되고 있다. 실험적인 연구에 의해 이러한 결함들이 있는 고장력볼트 이음부의 역학적 성질을 규명하기 위해서는 많은 재비용이 필요한 실정이므로 실험적으로 밝혀내기 어려운 결함이 있는 고장력볼트 이음부의 거동과 구조적 특성을 유한요소 해석을 통하여 규명하고 차후 실험에 의한 연구시 충분한 실험결과의 예측, 시험체의 설계 및 경제적인 실험적 연구의 수행을 위한 자료를 제공하는데 본 연구의 목적이 있다. 각종 결함이 발생하고 있는 교량을 대상으로 현장조사를 하여 결함의 발생위치 및 유형을 분석하고 가장 많이 발생하는 결함을 중심으로 표준모델에 결함을 주어 내부응력 분포 및 미끄러짐 거동에 대한 해석을 수행하였다. 정상체결된 고장력 볼트 이음부 및 볼트간격, 모재두께, 연단거리, 볼트 구멍 크기, 확공에 따른 결함을 가정하여 내부응력분포에 대한 구조해석을 수행하였다. 또한 고장력볼트 이음부의 미끄러짐 거동에 대해 해석하였는데 이 해석은 대변형을 고려한 기하학적 비선형, 접촉면의 비선형을 고려한 경계 비선형, 미끄러짐에 의해 항복강도를 초과하는 부분이 생길 수 있으므로 재료적 비선형 문제를 고려하여 해석하였다. 정상적으로 체결된 고장력볼트 이음부 및 볼트 축력의 감소에 따른 미끄러짐 해석을 수행하였다.

• 보건교육건강증진학회지
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• 제4권2호
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• pp.9-31
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• 1987

This study was conducted because of the investigator's concern for the high incidence and fatal nature of cancer in prime years of human life. The purpose of this study was to investigate risk factors on compilance for preventive health behavior of cancer. The data on which the analysis was based come from a survey of 828 married men & women, 40-59 years old. The instrument of the study were 'Health Belief Model' by Becker. The Data was analyzed using X--test, t-test, ANOVA, Pearson's Correlation Coefficient, Stepwise Multiple Regression. The followings were the result; 1. The examined group had a higher scores than the non-examined group in health belief variables. (p<0.001) 2. The higher level of health belief variables, the higher level of compliance for preventive health behavior is. (p<0.001) 3. The Stepwise Multiple Regression of compliance for preventive health behavior on the variables in the health belief model; Approximataly 65.5% of the variance of compliance for preventive health behavior was accounted for by health concern, susceptibility and barriers in combination. This meant that other factors seemed to influence preventive health behavior since the linear combination of variables failed to explain the remaining 34.5% of preventive health behavior of cancer. It tended to cost doubt on the usefulness of 5 variables in this model. Therefore further study to investigate the influential factors preventive health behavior of cancer is necessary.

• 가족자원경영과 정책
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• 제16권3호
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• pp.21-33
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• 2012

This study examines the level of resource-saving behavior among children and attempts to identify the variables-among socio-demographic, socio-environmental, and consumer attitude variables-that are most influential on this behavior. The research was conducted in 2010, following a preliminary study, and the data was garnered from 500 questionnaires that were distributed to elementary students in Seoul. The data were analyzed using a number of statistical methods, including frequencies, percentiles, means, standard deviation, Cronbach's coefficient, ANOVA, and hierarchical multiple linear regression analysis, using SPSS 18.0. The major findings of this study were as follows. First, the average level of resource-saving behavior of children was found to be 3.6 out of 5, indicating relatively rational behavior. Second, the variables that were found to have the greatest influence on children's resource-saving behavior were lower allowance, higher levels of education on the role of consumption, and more active socialization in childhood. Therefore, these variables should be taken into account when teaching children how to establish resource-saving behavior in their daily living.

• 여성건강간호학회지
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• 제23권2호
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• pp.135-144
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• 2017

Purpose: The purpose of this study was to identify degrees of mood states, perceived health status, social support, and health promoting behavior, and to explore factors influencing health promoting behavior in postpartum women who were at Sanhujoriwon. Methods: A cross-sectional survey design was used. Data were collected using questionnaires from 197 postpartum women who were at Sanhujoriwon from May 28 to June 18, 2015. Data were analyzed using descriptive statistics, Pearson's correlation analyses, and a multiple linear regression. Results: The mean age of the participants was 31.8 years. About a half (47.2%) participants had a plan to receive 2 weeks of Sanhujoriwon care service. The mean health promoting behavior score was 123.5 ranged from 72 to 171. The health promoting behavior was explained by perceived health status (${\beta}=.25$) and social support (${\beta}=.24$). These factors accounted for 14% of the health promoting behavior. Conclusion: The findings of this study reveal an important role of perceived health status, social support in health promoting behavior of postpartum women at Sanhujoriwon.

• 대한통합의학회지
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• 제5권2호
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• pp.71-81
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• 2017

Purpose: This study was conducted to investigate the level of nursing students' knowledge, attitude and behavior toward the elderly; correlations between the variables; and the factors influencing the behavior. Methods: Data were collected by 380 nursing students using a self-questionnaire from February 13th to 24th of 2017. Data were analyzed using t-test, one-way ANOVA, Pearson's correlation coefficients and stepwise linear regression with SPSS WIN 19.0. Result: The scores of knowledge, attitude and behavior toward elderly were 11.96 points (range 0~25), 4.51 points (range 1~7), 3.48 points (range 1~4), respectively. Significant differences were found in knowledge, attitude and behavior according to volunteer experience. There were positive correlations between the three variables. Factors influencing the behavior were volunteer experiences and the attitude toward the elderly, which explained about 17.7% of total variance. Conclusion: These results indicate a need to develop the gerontological nursing education program to lead to an increase of positive attitudes including volunteer work for the elderly. Accordingly, the program will help strengthen the nursing students' positive behavior toward the elderly.

• Journal of Information Processing Systems
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• 제15권3호
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• pp.570-592
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• 2019

The Event-B design pattern is an excellent way to quickly develop a formal model of the system. Researchers have proposed a number of Event-B design patterns, but they all lack formal behavior semantics. This makes the analysis, verification, and simulation of the behavior of the Event-B model very difficult, especially for the control-intensive systems. In this paper, we propose a novel method to transform the Event-B synchronous control flow design pattern into the labeled transition system (LTS) behavior model. Then we map the design pattern instantiation process of Event-B to the instantiation process of LTS model and get the LTS behavior semantic model of Event-B model of a multi-level complex control system. Finally, we verify the linear temporal logic behavior properties of the LTS model. The experimental results show that the analysis and simulation of system behavior become easier and the verification of the behavior properties of the system become convenient after the Event-B model is converted to the LTS model.

• 기본간호학회지
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• 제26권1호
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• pp.23-31
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• 2019

Purpose: This study was a descriptive survey research to identify the factors that influence sick role behavior compliance in patients on hemodialysis. Methods: Structured surveys were used to collect data from 170 patients who are on hemodialysis three times a week through outpatient care at a university hospital located in G City using tools measuring resilience, family support, and sick role behavior compliance. Data were analyzed using descriptive statistics, t-test, one-way ANOVA, Pearson's correlation coefficient, and Stepwise multiple linear regression. Results: The results showed that factors that influenced sick role behavior compliance in the subjects were in the order of family support (${\beta}=.27$, p<.001), age (${\beta}=.27$, p<.001), and resilience (${\beta}=.23$, p=.003). Resilience, family support, and sick role behavior compliance were positively correlated. Factors influencing hemodialysis patients' sick role behavior compliance included family support, age, and resilience. These variables explained 30.2% of the variance in sick role behavior compliance. Conclusion: Based on these results, care intervention and the development of a training program that involves family in the treatment plan and process to support and encourage patients are needed to increase the sick role behavior compliance in patients on hemodialysis.

• 한국지진공학회:학술대회논문집
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• 한국지진공학회 2000년도 추계 학술발표회 논문집 Proceedings of EESK Conference-Fall 2000
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• pp.348-355
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• 2000

The characteristics on non linear behavior and the failure mechanism of RC space frame structure serving railway under seismic action have been investigated by numerical analysis in time domain. The structure concerned is modeled in 3 dimensional extent and RC frame elements with fibers are employed. Fibers are characterized as RC one and PL one to distinguish different energy release after cracking. Due to deviation of mass center and stiffness center of entire structure the complex behavior under seismic action is shown. The excessive shear force is concentrated on the pier beside flexible one relatively, which leads to failure of bridge concerned.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 1999년도 토목섬유 학술발표회 논문집
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• pp.1-10
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• 1999

In the present study, laboratory pull-out tests with various geogrid shapes are carried out to investigate behavior characteristics of the geogrid. Also, an interface pullout formula is proposed for predicting and interpreting pullout test result. The analytical model is based on the assumption that the reinforcement is linear elastic during the pullout test. And then, maximum pullout force, frictional resistance and active length for each of the grid density ratio are predicted based on the interface pullout formula. The predicted results were compared with those of pullout tests, and showed in general good agreements.

• 한국자동차공학회논문집
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• 제7권9호
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• pp.119-130
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• 1999

This paper deals buckling behavior of laminated composite cylindrical shells subjected to combination of axial compression and torison. Linear and nonlinear finite element analysis are carried out . the influence of load type, load ratio, fiber orientation angle, stacking sequence, and intial imperfect on buckling behavior is discussed.