• Journal of the Korean Society of Safety
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• v.16 no.4
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• pp.128-133
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• 2001

In this paper, stability analysis is carried out far the out of plane behaviors under compressive loads to the conical direction. It is not easy to obtain the analytic solutions about the stability analysis of anisotropic conical shells consisted of composite materials. For solving this problems, this paper used the finite difference method which is one of the numerical methods. The characteristics of the buckling behaviors of anisotropic laminated composite conical shells may be different according to a variety of causes, that is, the change of fiber angle, material arrangement, radius ratio, shape ratio and so on. The objective of this study is to analyze buckling behaviors of circular conical shells with shear deformation effects and to prove the advantage of composite materials.

• Journal of the East Asian Society of Dietary Life
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• v.23 no.5
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• pp.519-532
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• 2013

The purpose of this study was to make a comparative analysis of dietary habits, snacks, eating out and fast-food intake between students with a relatively early sexual maturity and others with a relatively late sexual maturity in a bid to grasp the impact of dietary behaviors on sexual maturity. The subjects in this study were 565 boys and girls who resided in Seoul and Gyeonggi province. They included fifth- and sixth-grade school children and seventh-grade middle school students. To classify the selected students according to the level of sexual maturity, the students of the same month age were divided into two groups in consideration of the stage of their sexual maturity and that of the other age groups. The early mature group was significantly taller and weighed more than the late mature group irrespective of gender. According to Tanner stages, the boys of the early mature group reached a 3.03 stage of sexual maturity when the sexual organs were taken into account, and those of the late mature group reached a 1.50 stage of sexual maturity. The girls of the early mature group reached a 3.43 stage of sexual maturity on the basis of breast, and those of the late mature group reached a 2.73 stage of sexual maturity. Concerning eating out, the early mature group ate out more frequently than the late mature group. In regard to snacks, the early mature group had a snack more often. The findings of the study indicated that there were differences in physical development and some dietary behaviors according to sexual maturity. The early mature group had a snack and ate out relatively more often than the late mature group, which showed that some dietary behaviors had an impact on the sexual maturity of the teens who arrived at the age of puberty.

• Journal of Korean Academy of Nursing
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• v.34 no.7
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• pp.1234-1242
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• 2004

Purpose: This cross-sectional study was designed to identify anger-expression types of adolescent women and investigate the relation between the identified anger-expression types and their problem behaviors and health status. Method: One hundred ninety nine high school freshmen were recruited from September to November, 2003. Data was analyzed using descriptive statistics, cluster analysis, 2-test, ANOVA, and Duncan's multiple comparison test. Result: Three anger-expression types in adolescent women were found; Anger-out/in, Anger-control/in, and Anger-control type. Adolescent women with frequently using the anger-out/in type and with higher state anger reported more delinquent behaviors, more health risk behaviors, and higher psychosomatic symptoms. However, adolescent women with lower state anger and frequently using the anger-control type reported more depression scores. Conclusion: There is a need to further clarify the relationship between anger-expression type sand depression in adolescent women. The findings suggest the necessity of a development of the program for lowering the anger level and controlling the unfavorable anger expression types such as the anger-out in.

• Journal of muscle and joint health
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• v.26 no.3
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• pp.167-174
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• 2019

Purpose: The purpose of this study was to investigate the effects of self-efficacy and social support on health promotion behaviors of patients with stroke. Methods: A sample of 123 patients with stroke was recruited from outpatient department of a hospital. Data were collected between September and October in 2015 using Health Promoting Lifestyle Profile II (HPLP-II), the Homebound Stroke Patients' Self-efficacy, and the Multidimensional Scale of Perceived Social Support (MSPSS). Results: The mean score of HPLP-II, self-efficacy, MSPSS were 2.71 out of 4, 63.87 out of 75 and 37.91 out of 60, respectively. Multiple regression analysis demonstrated that self-efficacy and family support explained 40% of the health promotion behaviors among the stroke patients. Conclusion: The results of the study revealed that self-efficacy and family support have significantly positively correlated with health promotion behaviors. These correlates should be taken into account in the development of interventions to support patients with stoke in health behavior change.

• Journal of Korean Academy of Nursing
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• v.16 no.3
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• pp.97-107
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• 1986

This study was about nurse's helping behaviors and the purpose of the study was to find out the nurse's helping behaviors, to identify the nurse's helping behavior level by the nurses personal back-ground and to find out the relationship between the nurse's helping behavior and patient's self-exploration. The subjects, consisting of 192 adults in-patients who had less acute physical problem and 192 registered nurses working on these ward in 3 hospitals in Seoul and 1 hospital in Kang Won province of Korea. The data were collected from Jan. to rob. 1986 through the descriptive responds and self-reported questionaires. The instruments used for this study were Carkhuff's index of communication. Henderson's Irritating Listening Behavior, revised by the Kim(1984) and patient problem understanding scale, patients trust scale on nurse, developed by the Kim(1984). Analysis of the Data was done by use of mean, t-test, F-test and Pearson correlation coefficients. The results of study are summerized as follows; 1. Mean of nurse's helping behavior was 1.84 out of 4. These point were less than 3.0 which means the minimum points as the facilitative helper. 3. There was no significant differences of nurses helping behaviors to the nurse's personal back-ground (p<.05). 3. There were positive rotation between the nurse's helping behaviors and patient's self-exploration behavior (P<0001). In conclusion, 1 may can give some suggestion, according to the study results: 1. The systematic study about nurse's helping behavior is need all over the Korea. 2. Educational program for the facilitative relationship between nurses and patient must be developed, 3. Further detailed analysis methods are need on the independent variables of patient's self-explorations behavior.

• Korean Journal of Child Studies
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• v.8 no.2
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• pp.61-71
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• 1987

The effects of token and social reinforcement on inappropriate study behaviors of nursery school children were investigated. The subjects were three nursery school boys, and the target behaviors were : 1) out-of-seat behaviors, 2) bothering other children, and 3) disruptive behaviors. The ABAB(Reversal) design was used in this experiment. It consisted of four periods : baseline, reinforcement I, reversal, and reinforcement II. During the reinforcement period, social reinforcement as well as token reinforcement was applied. In all three subjects, inappropriate study behaviors decreased during the reinforcement periods (I, II), and increased during the reversal period, showing the effects of token and social reinforcement. The subjects showed stability in three post-experimental tests, indicating that modification of inappropriate study behaviors was being maintained.

• Journal of Digital Convergence
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• v.16 no.10
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• pp.333-342
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• 2018

The objective of this study was to investigate the problem behavior and its convergent factors in out-of-school adolescents, with a focus on gender differences. This study was a secondary data analysis study using out-of-school adolescents research data at Busan women and family development institute. The study was conducted in a total of 499 out-of-school adolescents (337 males, 162 females). The type of the 8 problem behaviors (run away from home, drop out, prostitution, violence, internet game addiction, theft, drug addiction, and smoking) were identified. The collected data were analyzed with multiple logistic regression. Among the problem behaviors of the participants, internet game addiction and theft were more significantly high in male out-of-school adolescents than female out-of-school adolescents. In internet game addiction, male out-of-school adolescents were 1.90 times higher than female out-of-school adolescents (p=.008, 95% CI=1.18-3.06). In theft, male out-of-school adolescents were 1.92 times higher than female out-of-school adolescents (p=.006, 95% CI=1.21-3.03). When the social measures were provided for those adolescents, a distinguished approach is required depending on the problem behavior and gender.

• Korean Journal of Child Studies
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• v.11 no.2
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• pp.82-97
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• 1990

The purpose of this study was to investigate (1) the developmental level of children's concept of gender by age and sex. (2) children's sex-specific behaviors by age and sex, and (3) children's sex-specific behaviors by developmental level of gender constancy. The subjects were 164 children (forty 3-year-olds, forty-three 5-year-olds, forty 7-year-olds and forty-one 9-year olds) with nearly equal numbers of boys and girls. They were selected from two kindergartens and one elementary school. A quasi experiment was carried out with the procedures described by Slaby and Frey (1976) to measure children's developmental level of the concept of gender constancy. Two experiments were carried out to observe children's sex-specific behaviors: one for children's toy choice behavior and the other for children's interaction with their peers. Statistical methods adopted for data analysis were frequencies. percentiles, mean. and $X^2$. It was found that children's sex-specific behaviors were different according to their developmental level of gender constancy. Children's developmental level of gender constancy was significantly different according to their age, but there was no difference according to their sex. Children's toy-choice behavior was significantly different according to their age and sex. Children's sex-specific behaviors were significantly different according to their concept of gender constancy.

• Korean Journal of Childcare and Education
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• v.14 no.5
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• pp.65-84
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• 2018

Objective: This study investigated the effects of discussion using personality picture books on young children's self-regulation ability and pro-social behaviors. Methods: Participants consisted of thirty-nine 5-year-old children who were going to a kindergarten in Gwangju metropolitan city. Nineteen children belonged to the experimental group and twenty children to the comparative group. The experimental group carried out discussion using personality picture books, and the comparative group carried out conversation activities. Results: The results of this study demonstrated that the experimental group scored higher than the comparative group in self-regulation ability and pro-social behaviors. That is to say, the experimental group scored higher than the comparative group in three sub factors of self-regulation ability and seven sub factors of pro-social behaviors. Conclusion/Implications: It is significant that this study provides useful information about discussion using personality picture books with young children that can be used in the early childhood field.

• Structural Engineering and Mechanics
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• v.82 no.3
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• pp.369-383
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• 2022

In this study, an equivalent boundary conditions (BCs) determination method is developed numerically for a panel reinforced concrete (RC) slab to realistically analyze the deformation and fatigue behaviors of a bridge RC slab. For this purpose, a finite element analysis of a bridge RC slab is carried out beforehand to calculate the stiffness of the bridge RC slab, and then the equivalent BCs for the panel RC slab are determined to achieve the same stiffness at the BCs to the obtained stiffness of the bridge RC slab at the corresponding locations of the bridge RC slab. Moreover, for the simulation of fatigue behaviors, fatigue analysis of the panel RC slab is carried out employing a finite element method based on a numerical model that considers the bridging stress degradation. Both the determined equivalent BCs and the BCs that have been typically applied in past studies are employed. The analysis results confirm that, in contrast to the panel RC slab with typically used BCs, the panel RC slab with equivalent BCs simulate the same bending moment distribution and deformation behaviors of the bridge RC slab. Furthermore, the equivalent BCs reproduce the extensive grid crack pattern in the panel RC slab, which is alike the pattern normally witnessed in a bridge RC slab. Conclusively, the panel RC slab with equivalent BCs behaves identical to the bridge RC slab, and, as a result, it shows more realistic fatigue behaviors observed in the bridge RC slab.