• Computational Structural Engineering
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• v.10 no.3
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• pp.167-174
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• 1997

Engineers must be aware of possible sources of chaotic behavior. They may render conventional design predictions untrustworthy and potentially unsafe because of the sensitivity to initial conditions. Dynamic responses of a spherical shell subjected to impulsive loading which act on the center are analyzed using the finite element method. The chaotic responses are identified by the standard methods, such as displacement-time histories, Poincare maps, and phase diagrams. The responses are chaotic, but, not so sensitive to the initial conditions, and the characteristics of responses are not changed with time, in contrast to the case of the responses of beam. The Poincare points scattered in the limited area represent that the responses are chaotic, but do not show the geometric structures. The snap-through phenomena of the shell to the side of the direction of the load or of the opposite direction, is analysed by using the energy diagram.

• Biomolecules & Therapeutics
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• v.20 no.1
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• pp.125-131
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• 2012

Impulsiveness is an important component of many psychiatric disorders including Attention-deficit/hyperactivity disorder (ADHD). Although the neurobiological basis of ADHD is unresolved, behavioral tests in animal models have become indispensable tools for improving our understanding of this disorder. In the punishment/extinction paradigm, impulsivity is shown by subjects that persevere with responding despite punishment or unrewarded responses. Exploiting this principle, we developed a new behavioral test that would evaluate impulsivity in the most validated animal model of ADHD of the Spontaneously Hypertensive rat (SHR) as compared with the normotensive "control" strain, the Wistar Kyoto rat (WKY). In this paradigm we call the Electro-Foot Shock aversive water Drinking test (EFSDT), water-deprived rats should pass over an electrified quadrant of the EFSDT apparatus to drink water. We reasoned that impulsive animals show increased frequency to drink water even with the presentation of an aversive consequence (electro-shock). Through this assay, we showed that the SHR was more impulsive than the WKY as it demonstrated more "drinking attempts" and drinking frequency. Methylphenidate, the most widely used ADHD medication, significantly reduced drinking frequency of both SHR and WKY in the EFSDT. Thus, the present assay may be considered as another behavioral tool to measure impulsivity in animal disease models, especially in the context of ADHD.

• The Research Journal of the Costume Culture
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• v.11 no.6
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• pp.913-924
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• 2003

The purpose of this study was to investigate the correlation between self-concept, clothing attitude and clothing buying behavior. The subjects used for the study were 300 male and female college students. The results of the study were as follows. The self-concept of subjects were identified four types(self-confident, positive to self, self-convinced and pessimistic). Self-confident type had the highest scores on self-concept and pessimistic type was the opposite. The clothing attitude was classified into 5 types(rational coordinative, clothing concerned, frugal, clothing showy and others conscious). Rational coordinative type and clothing concerned type were regarded more importantly than other types. The clothing buying behavior was emerged 5 types(economical, diffident, pleasure-seeking, impulsive and name-brand preferred). An economical efficiency was the most important factor in clothing buying behavior. The results of correlation between self-concept and clothing attitude showed that person who has more positive self-concept tends to have more interest and satisfaction toward clothing as well as tendency of showing off and rational coordination. The correlation between clothing attitude and clothing buying behavior showed that person who is more conscious to others tends to have more preference for name-brand products.

• Korean Journal of Human Ecology
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• v.16 no.1
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• pp.111-121
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• 2007

The purpose of this study was to examine university students' clothing and cosmetics purchasing behaviors according to gender and major. For the study, 337 university students living in Chonbuk area participated in this survey research. The data were analyzed utilizing SPSS statistics package. Exploratory factor analysis, reliability test, and t-test were used. Five factors in each clothing and cosmetics purchasing orientation were generated from the factor analysis. According to gender and major, clothing and cosmetics purchasing behavior were significantly different. Female students showed more impulsive, rational, and economical purchasing orientations than male students did. On the contrary, male students showed more independent and convenient purchasing orientations. The students with fashion design major showed higher tendency in impulsive and rational clothing purchasing orientations than non-fashion design major students. Finally, clothing and cosmetics purchasing behaviors were significantly different by gender and major in terms of information usage and expenditure for clothing and cosmetics.

• Journal of the Earthquake Engineering Society of Korea
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• v.22 no.7
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• pp.401-409
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• 2018

Performance-based seismic evaluation is usually done by considering simplified models for the liquid storage tanks therefore, it is important to validate those simplified models before conducting such evaluation. The purpose of this study is to compare the seismic response results of the FSI (fluid-structure interaction) model and the simplified models for the cylindrical liquid storage tanks and to verify the applicability of the simplified models for estimating failure probability. Seismic analyses were carried out for two types of storage tanks with different aspect ratios (H/D) of 0.45 and 0.86. FSI model represents detailed 3D fluid-structure interaction model and simplified models are modeled as cantilever mass-spring model, frame type mass-spring model and shell type mass-spring model, considering impulsive and convective components. Seismic analyses were performed with modal analysis followed by time history analysis. Analysis results from all the models were verified by comparing with the results calculated by the code and literature. The results from simplified models show good agreement with the ones from detailed FSI model and calculated results from code and literature, confirming that all three types of simplified models are very valid for conducting failure probability analysis of the cylindrical liquid storage tanks.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.1
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• pp.278-286
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• 2010

Until now, most of the studies about the impulse buying have focused mainly on the product of off-line shop, while there have relatively been very few studies about the product in internet shopping mall. The goal of this study was to understand Impulse Buying Behavior(IBB) for digital contents in the internet. Data has been collected from 278 respondents. The questionnaire method was adopted to collect the data for this study. The research was conducted by using SPSS 12.0 and AMOS 5.0. It was found that as follows: First, marketing stimulation factors, such as price, product, promotion was related positively to FLOW. Second, marketing stimulation factors was related partly positively to IBB. Third, FLOW has mediating effects in the relations between marketing stimulation factors and IBB. Finally, Self-Behavior Control and Sensation Seeking Tendancy has moderating effect in the IBB process. Thus, It also provides a core strategic Implication with Digital Contents Marketers.

• Journal of Families and Better Life
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• v.24 no.2 s.80
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• pp.73-92
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• 2006

This paper investigates the causal relationships between financial attitudes, spending behaviors and the financial satisfaction of adolescent consumers. The study used Cronbach' $\alpha$, t-test, one-way ANOVA, Duncan's multiple range test, multiple regression and path analysis for statistical analysis and applied it to 1,252 questionnaires. The results are summarized as follows: Path analysis revealed that the financial satisfaction of adolescents had a direct linear relationship with variables such as grade, sex, financial attitudes. (financial situation compared to past and financial situation compared to others) and types of spending behaviors (planned, conspicuous and excessive). Planned spending behavior was the most influential variable on financial satisfaction. Planned spending behavior had positive linear relationship with the attitude toward the past financial situation. Conspicuous spending behavior had positive linear relationships with the attitudes toward the past financial situation and the financial situation compared to others. However, it showed negative relationship with the attitude toward a future financial situation. Impulsive spending behavior had a positive relationship with the attitude toward others' financial situation. Excessive spending had a positive relationship with the attitude toward a past financial situation but showed a negative relationship to the attitude toward others' financial situation.

• International Journal of Computer Science & Network Security
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• v.24 no.7
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• pp.45-54
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• 2024

Ingrained in multiple consumption theories, this research covers the seven determinants (Hedonic Consumption, Consumers' mood, Store layout, product promotion, Persons' situation, Materialism, and Product Attributes) of purchase intentions of a consumer. For this study, 384 offline shoppers were surveyed and found that out of seven, six determinants significantly trigger impulse buying behavior of customers of beauty products in a modern market setting while one determinant 'Materialism' did not have any influence on the impulse buying behavior. The relationships of the variables were statistically checked by multiple linear regression. Results of this study show that a consumer's mood has a significant impact on impulse buying as it can trigger the impulse behavior of consumers. Person situations also have a positive impact on impulse buying it means time, money, fear of missing out can active impulse buying. Store layout can also trigger that unplanned purchase which means store lighting, the music of the store, ambiance may affect the purchasing. Product promotion has an impact on spontaneous purchase which indicates that free coupons, discounts, free delivery, offers to attract the customer to sudden purchase. Product design, packaging, color, labeling indicate a positive and significant impact on impulse buying. However, materialism indicates an insignificant impact on impulse buying.

• The Korean Journal of Elementary Counseling
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• v.6 no.1
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• pp.171-191
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• 2007

The purpose of this study is to develop social skill training in order to reduce problematic behaviors and improve peer relations for elementary school students who have ADHD(Attention Deficit Hyperactivity Disorder) and then verify its effectiveness. The problems for this study are as follows: Firstly, is the social skill training for students with ADHD effective in enhancing their self-esteem? Secondly, is the social skill training for students with ADHD effective in reducing their carelessness, hyperactivity and impulsive character? Thirdly, is the social skill training for students with ADHD effective in improving peer relations? Subjects were six 5th grade children who were selected by the ADHD-SC4 at P elementary school in Pyeongtaek. The social skill training consisted of 10 sessions which included forming friendship, recognizing, making friends, solving problems, reeducation and evaluation. Qualitative data were collected through self-esteem inventory, peer-relation test, self-reported scales for children and Conners' Teacher rating score for ADHD children. The collected data were analysed with t-test. Qualitative data were collected though teacher's interview and observation an the children. The results of the study were follows: First, the social skill training did not give a significant effect in enhancing the self-esteem of the children with ADHD. Second, the social skill training had a positive effect in reducing in attentiveness, hyperactivity and impulsive behavior of the children with ADHD. Third, the social skill training did not give a significant effect in improving the peer relations of the children with ADHD. Fourth the qualitative data showed that the social skill training had positive effect in enhancing over all classroom behavior.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.12 no.2
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• pp.21-33
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• 1992

Under the intense-impulsive loading, structures are subjected to the wide range of pressures at an instantaneous time. The constitutive laws capable to describe the material behavior under the extreme pressure as well as the low pressure are necessary for the analysis of the structural behavior under the intense -impulsive loadings. In this study, two plastic models, the pressure independent Von-Mises model and the pressure dependent Drucker-Prager model, are employed for the wave propagation analysis. Governing equations of this study are conservation equations of momentum and mass in Lagrangian coordinate system which is fixed to the material. Due to the shock-front which violates the continuity assumptions inherent in the differential equations numerical artificial viscosity is used to spread the shock front over several computational zones. These equations are solved by Finite Difference Method with discretized time and space coordinates. The associate normality flow rule as a plastic theory is implemented to find the plastic strains.