• Human Ecology Research
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• v.55 no.1
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• pp.1-12
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• 2017

This study examines the relationship among children's smart device immersion tendency, children's self-regulation, and pro-social behavior as well as investigates the mediating effect of self-regulation between children's smart device immersion tendency and pro-social behavior. Participants were composed of 263 4-year-old children attending kindergarten in Incheon and Gyeonggi province. Data were analyzed by means of Pearson's correlation coefficients in SPSS, the structural equation model and bootstrapping in AMOS. The results are as follows. First, there is a statistically meaningful relationship among children's smart device immersion tendency, self-regulation, and pro-social behavior. There is a negative correlation between children's smart device immersion tendency and children's self-regulation as well as pro-social behavior; however, there is positive relationship between children's self-regulation and pro-social behavior. Second, children's smart device immersion tendency had a direct effect on children's self-regulation. In addition, children's self-regulation indicated a direct effect on children's pro-social behavior. Third, children's self-regulation was found sufficient to mediate the relationship between children's smart device immersion tendency and pro-social behavior. The results indicate that the effort to increase children's self-regulation may decrease the negative effect toward children's pro-social behavior caused by smart device immersion tendencies.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.19 no.3
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• pp.374-382
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• 2012

Purpose: The study was done to influence of family function and degree of depression on impulsive behavior in adolescents. Method: Using convenience sampling 780 adolescents were recruited from October 29 and November 9, 2011. Data were collected using self-report questionnaires which included items on general characteristics, family function, depression, and impulsive behavior. Data were analyzed using t-test, ANOVA, Scheffe test, Pearson Correlation Coefficient, and hierarchical regression analysis. Results: The major findings of this study were as follow; 1) There was a significant negative relationship between family function and impulsive behavior (r=-.236, p<.001) and a positive relationship between depression and impulsive behavior (r=.342, p<.001). 2) Factors with a significant negative association with impulsive behavior were higher school records (${\beta}$=-.112, p<.001) and family function: positive resolution of family problems (${\beta}$=-.213, p=.008), while a significant positive association was found for unsatisfactory school life (${\beta}$=.103, p=.016), family function: emotional reactivity (${\beta}$=.159, p=.028), and depression (${\beta}$=.301, p<.001). These variables explained 20.1% of variance for impulsive behavior. Conclusion: The results of this study identify a relationship between family function, depression, and impulsive behavior in adolescents indicating variables to be addressed to reduce impulsive behavior. These variables can be used in developing intervention programs.

• Korean Journal of Health Education and Promotion
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• v.13 no.2
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• pp.54-68
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• 1996

This study aimed at examining the risk factors of smoking behavior among middle school students and preparing school-based smoking prevention program. This study surveyed at February 1995 from 892 students at 3 middle schools in Seoul. The major findings of this study are follows; The proportion of current smoker among students in this study was 3.8%, and the proportion of intentions to smoking was 8.4%. At demographic variables male, pocket money of month was significantly positive association with smoking behavior, but economic status and education status of father were significantly negative association with smoking behavior. Results indicated that social influence variables(peer influence), alcohol, and positive attitudes of smoking were significantly positive association with smoking behavior. So implications for smoking prevention programs may be more effective at risk populations than using general adolescent population. Also ‘School-based smoking prevention programs’ may be learning social pressure resistance skills and giving knowledge and information about negative attitudes about smoking.

• Journal of the Korean Society of Food Culture
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• v.29 no.5
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• pp.406-414
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• 2014

The purpose of this study was to determine the relationships among brand awareness, switching intentions, purchasing behavior, and revisiting intentions. Brand awareness consisted of three factors: brand image, physical environment, and affiliation of coffee brand. Good brand image was associated with reduced switching intentions, whereas negative images were associated with higher switching intentions. Consumer purchasing behavior was most affected by interior decoration, including furniture, decorations, etc. Switching intentions had a negative relationship with revisiting intentions. Finally, purchasing behavior and revisiting intentions showed a positive correlation. As limitations, the only participants were university students, who are not representative of all consumers at coffee shops. Moreover, this study did not divide coffee shops into franchises and individually owned.

• Journal of Industrial Convergence
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• v.5 no.1
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• pp.3-21
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• 2007

The purpose of this study is to examine the effect of superleadership on organizational cynicism and organizational citizenship behavior. On the basis of theoretical linkages between the constructs, a conceptual model and hypotheses were established. The sample included 400 employees. Structural equation modeling(SEM) was used to employed the hypothesized relationships in the conceptual model. Results indicated that (a)superleadership has a negative impact organizational cynicism; (b)organizational cynicism has a negative impact organizational citizenship behavior; (c)superleadership has a positive impact organizational citizenship behavior. Implications for applying superleadership to organizational cynicism and organizational citizenship behavior were discussed and future research directions were outlined.

• Journal of Korean Home Economics Education Association
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• v.7 no.1
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• pp.29-45
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• 1995

The purpose of this study was to investigate eating behavior and the attitude about weight control of the High School Girls. The questionnaires were completed by 519 girls’ high school students.(lived in city ; 269, in mine region ; 250) The results were as follows: 1. The average stature of them was 159.01${\pm}$5.09cm, the average weight was 51.64${\pm}$6.76kg. 2. In the present body structure of them, the underweight structure was 26.2% the normal weight structure was 58.4% the overweight structure was 15.4%. The present body structure was very different from the recognition of their own body structure. 3. The average point of the eating behavior was 52.07 and that of city(53.62 point) was higher than mine region(50.01 point). 4. The rate of going without breakfast(P<0.05) the frequency of snack(p<0.001) the eating rate of stimulus foods(p<0.05) the interest healthy food life(p<0.05) in two regions showed the significant difference. 5. The point of eating behavior in two regions showed the positive correlation in the economic level, the contentment degree of the present body structure, the conscious healthy condition. But it showed the negative correlation in the rate of going without of breakfast. On observing the difference of the tow regions, it showed the positive correlation to mother’s education career on the negative relation to the experience of the weight control in the city. In the other hand it showed the negative correlation to the recognition on degree of the present body structure in the mine region. 6. The contentment degree of the present body structure showed the negative correlation to the experience of the weight control. Also it showed the negative correlation to the rate of going without breakfast in the city.

• Journal of the Korean Applied Science and Technology
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• v.37 no.5
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• pp.1257-1267
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• 2020

This study was conducted to analyze the differences in negative health behavior, mental health, and self-esteem between tattooed and non-tattooed college students. The subjects of this study were 214 four-year college students located in Seoul and Gyeonggi-do. For data analysis, descriptive statistics, factor analysis, Cronbach's α, crossover analysis, and t-test were conducted using the 25.0 version of the SPSS statistical package. As a result of the study, there was no significant difference in negative health behavior, mental health, and self-esteem between the two groups according to the presence of tattoos. Therefore, it can be said that it has a meaning as a positive aspect of research contrary to previous studies that report negative properties of tattoo. This study is expected to be used as basic data in establishing tattoo culture suitable for the times by reflecting and activating tattoos as a cultural phenomenon in the future.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2004.05b
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• pp.391-394
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• 2004

Change of paradigm of network attack technique was begun by fast extension of the latest Internet and new attack form is appearing. But, Most intrusion detection systems detect informed attack type because is doing based on misuse detection, and active correspondence is difficult in new attack. Therefore, to heighten detection rate for new attack pattern, visibilitys to apply human immunity mechanism are appearing. In this paper, we create self-file from normal behavior profile about network packet and embody self recognition algorithm to use self-nonself discrimination in the human immune system to detect anomaly behavior. Sense change because monitors self-file creating anomaly detector based on Negative Selection Algorithm that is self recognition algorithm's one and detects anomaly behavior. And we achieve simulation to use DARPA Network Dataset and verify effectiveness of algorithm through the anomaly detection rate.

• Steel and Composite Structures
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• v.49 no.4
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• pp.381-392
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• 2023

This study experimentally investigates the flexural behavior of steel-UHPC composite slabs composed of an innovative negative Poisson's ratio (NPR) steel plate and Ultra High Performance Concrete (UHPC) slab connected via demountable high-strength bolt shear connectors. Eight demountable composite slab specimens were fabricated and tested under traditional four-point bending method. The effects of loading histories (positive and negative bending moment), types of steel plate (NPR steel plate and Q355 steel plate) and spacings of high-strength bolts (150 mm, 200 mm and 250 mm) on the flexural behavior of demountable composite slab, including failure mode, load-deflection curve, interface relative slip, crack width and sectional strain distribution, were evaluated. The results revealed that under positive bending moment, the failure mode of composite slabs employing NPR steel plate was distinct from that with Q355 steel plate, which exhibited that part of high-strength bolts was cut off, part of pre-embedded padded extension nuts was pulled out, and UHPC collapsed due to instantaneous instability and etc. Besides, under the same spacing of high-strength bolts, NPR steel plate availably delayed and restrained the relative slip between steel plate and UHPC plate, thus significantly enhanced the cooperative deformation capacity, flexural stiffness and load capacity for composite slabs further. While under negative bending moment, NPR steel plate effectively improved the flexural capacity and deformation characteristics of composite slabs, but it has no obvious effect on the initial flexural stiffness of composite slabs. Meanwhile, the excellent crack-width control ability for UHPC endowed composite members with better durability. Furthermore, according to the sectional strain distribution analysis, due to the negative Poisson's ratio effect and high yield strength of NPR steel plate, the tensile strain between NPR steel plate and UHPC layer held strain compatibility during the whole loading process, and the magnitude of upward movement for sectional plastic neutral axis could be ignored with the increase of positive bending moment.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.34 no.6
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• pp.371-383
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• 2021

Steel-concrete single-leaf blast-resistant doors, having steel box and slab inside, are installed on the wall using supporting members such as hinges and latches. Several studies have been conducted on their deflection behavior in the same direction as that of the blast pressure, but studies on their deflection behavior in the opposite direction, that is, studies on negative deflection behavior are relatively insufficient. In this study, we conducted a parameter analysis using finite element analysis on blast-resistant doors, on their rebound behavior in the negative deflection phase. Results revealed that the plastic deformation of the door, and the change in momentum and kinetic energy during rebound, were major factors influencing the rebound behavior. Greater rebound force was developed on the supporting members in the impulsive region, than in the quasi-static region; due to the characteristics in the impulsive region, where the kinetic energy developed relatively greater than the strain energy. In the design process, it is necessary to consider excessive deformation that could occur in the supporting members as the rebound behavior progresses. Additionally, it was found that in the case of steel-concrete blast doors, the rebound force increased relatively more, when the effects of both rebound and negative blast pressure contributed to the negative deflection of the door. Since conditions for the occurrence of this superposition effect could vary depending on structural characteristics and explosion conditions, further investigation may be required on this topic.