• Communications of the Korean Mathematical Society
• /
• v.18 no.4
• /
• pp.635-641
• /
• 2003

The notion of negative difference on a poset is introduced, and the interrelations between FI-algebras and posets with negative difference are discussed.

• The Transactions of the Korean Institute of Electrical Engineers D
• /
• v.49 no.11
• /
• pp.617-624
• /
• 2000

The negative weight can be ofter seen in Hopfield neural network, which is difficult to implement negative conductance in circuits. Usually, the inverted output of amplifier is used to avoid negative resistors for expressing the negative weights in hardware implementation. However, there is some difference between using negative resistor and the inverted output of amplifier for representing the negative weight. This difference is discussed in this paper.

• Journal of applied mathematics & informatics
• /
• v.27 no.1_2
• /
• pp.441-452
• /
• 2009

In this paper, a fifth order numerical method is presented for solving singularly perturbed differential-difference equations with negative shift. In recent papers the term negative shift has been using for delay. Similar boundary value problems are associated with expected first exit time problem of the membrane, potential in models for neuron and in variational problems in control theory. In the numerical treatment for such type of boundary value problems, first we use Taylor approximation to tackle terms containing small shifts which converts it to a boundary value problem for singularly perturbed differential equation. The two point boundary value problem is transformed into general first order ordinary differential equation system. A discrete approximation of a fifth order compact difference scheme is presented for the first order system and is solved using the boundary conditions. Several numerical examples are solved and compared with exact solution. It is observed that present method approximates the exact solution very well.

• Journal of Families and Better Life
• /
• v.27 no.2
• /
• pp.1-9
• /
• 2009

The purpose of this study was to investigate the influence of demographical variables(gender and age) and alienation on adolescent's negative emotion-induced eating motivation. The subjects were 389 middle and high school students who lived in Keoungbok. The data were analyzed by t-test, one-way ANOVA and stepwise multiple regression(using SPSS 12.1). Major findings were as follows: 1) There was difference in adolescent's negative emotion-induced eating motivation according to gender, age, and level of alienation. Adolescent's negative emotion-induced eating motivation tended to be higher when adolescent were girl students, or high school students or in higher level of alienation. 2) Alienation was the stronger predictor of adolescent's negative emotion-induced eating motivation than gender and age. 3) There was difference in boy adolescent's negative emotion-induced eating motivation according to age and level of alienation. But there was difference in girl adolescent's negative emotion-induced eating motivation only according to level of alienation. 4) For boy, alienation was the stronger predictor of adolescent's negative emotion-induced eating motivation than age. But for girl alienation was only significant predictor of adolescent's negative emotion-induced eating motivation.

• Journal of Environmental Science International
• /
• v.29 no.4
• /
• pp.403-413
• /
• 2020

The purpose of this study is to understand the formation of internal wind paths of open space and its effect on meteorological factors and the generation of negative air ions. Various types of internal wind paths of open space were formed. Subsequently, changes in meteorological factors in each type were measured and the generated negative air ions were analyzed. The four key findings of the study are summarized as follows. First, the average wind speed formed inside the open space was analyzed such that the difference in wind speed was dependent on the difference in the composition of the wind path. Second, the negative air ion generation was observed to have the same trend as the average wind speed difference. Third, changes to the meteorological factors were more evident depending on the difference in wind path formation patterns. Solar radiation was expected to be highly affected by the physical structure (direction) of the target site. The relative humidity was found to show large difference depending on the different wind path type; however, this difference was significantly reduced when converting to absolute humidity. Fourth, it was found that the wind path formation type of open space affects meteorological factors through path analysis, and the changed meteorological factors affect the amount of generated negative air ions. Two conclusions can be obtained based on these results. First, the changes in internal wind speed formation of open space directly reduced the amount of generated negative air ions. Second, the changes in wind speed affect meteorological factors as well as the amount of generated negative air ions.

• Korean Journal of Child Studies
• /
• v.25 no.6
• /
• pp.355-370
• /
• 2004

This study was to examine the relationship between temperament and children's emotion regulation with negative emotion. Following are the purposes of this research. First, children's temperament and negative emotion, and emotion regulation was found based on children's sex and age difference. Second, if there is a relationship between children's temperament and children's negative emotion and emotion regulation. The subjects of this study were 213 students who were in 8, 10, 12 ages of elementary school in Mokpo. The scales used in this study was Buss & Plomin(1975)'s EAS(Emotionality, Activity, Sociability, Impulsivity) and Brand & Halpern(1998)'s ERACH(Emotion Response and Coping Interview). The data analysis was made by SPSS PC+, and average, two-way ANOVA, Scheffe test, correlation and were employed to test the research questions. As a result of this research a difference in age was found, and a difference in sex was not found. Children's temperament was in positive relation with anger and emotion approach. This research will assist to make the foundation of counseling psychology and developmental psychology.

• Anxiety and mood
• /
• v.15 no.2
• /
• pp.77-83
• /
• 2019

Objective : This study aims to investigate the relationship between negative sexual experience and psychiatric symptoms by gender and compare the effects of sexual assault and unwanted sexual experiences on psychiatric symptoms in patients with depression or anxiety disorders. Methods : A total of 204 respondents who have had negative sexual experiences of outpatients diagnosed with depression or anxiety disorders were evaluated with AUDIT, PSS, STAI, BDI, and SSI. Independent samples t-test was performed to compare the psychiatric symptom scale scores between male and female and identify the difference of the psychiatric symptom scale scores between those who have had sexual assault and those who have had only unwanted sexual experience. Results : There was no difference in psychiatric symptom scale scores except for AUDIT between male and female in 204 patients with negative sexual experience. There was also no significant difference in AUDIT, PSS, and STAI scores between those who experienced sexual assault and those who experienced only unwanted sexual experiences. BDI and SSI scores are significant higher in those who experienced sexual assault than those who experienced only unwanted sexual experiences. Conclusion : This suggests that male and female may have similar levels of psychiatric symptoms after experiencing negative sexual experiences. Psychiatric symptoms caused by sexual assault may have differences from the psychiatric symptoms caused by unwanted sexual experience. Understanding the differences in psychiatric symptoms according to the type of negative sexual experience may helpful to direct the therapeutic plans.

• Journal of applied mathematics & informatics
• /
• v.13 no.1_2
• /
• pp.125-138
• /
• 2003

Some Riccati type difference inequalities are established for the second-order nonlinear difference equations with negative neutral term $\Delta$(a(n)$\Delta$(x(n) - px(n-$\tau$))) + f(n, x($\sigma$(n))) = 0 using these inequalities we obtain some oscillation criteria for the above equation.

• Management & Information Systems Review
• /
• v.25
• /
• pp.171-201
• /
• 2008

Previous research on negative contents of verbal message being more influential has a two broad streams as impression formation theory and negative information having an more diagnostic informational value. Therefore, this research was intended to obtain consistent results from researches by message frame segmentation of verbal message and to determine the medium of verbal message. It was proven from the research that objects influencing verbal message are being effected by the participation ratio of products and the positive indication is having more meaningful difference than the negative indication statistically unlike to the results of previous researches. Unlike just a biased positive message or negative message as the result of previous research, it was proven that the positive indication is influential regardless of sequences according to participation ratio and site participation in case of positive and negative being existing together.

• Tribology and Lubricants
• /
• v.22 no.2
• /
• pp.93-98
• /
• 2006

The numerical analysis of the negative pressure porous gas bearings is presented. The pressure distribution is calculated using the finite difference method. The Reynolds equation and Darcy's equation are solved simultaneously. The air bearing stiffness and damping are evaluated using the perturbation method. Rectangular uniform grid is employed to model the bearing. The vacuum preloading is considered. The pressure in the vacuum pocket is assumed to be a constant negative pressure. The total load, stiffness, damping and flow rate are calculated fur several geometrical configurations and several values of negative pressure. It is found that too large vacuum pocket can result in negative total force.