• Human Ecology Research
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• v.54 no.6
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• pp.565-574
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• 2016

This research examined the trajectories of peer rejection in preschool children. This study also investigated the gender differences in the intercept and slope of the trajectories for peer rejection along with the influences of aggression, withdrawal and language ability on the trajectories of peer rejection. A latent growth curve model investigated peer rejection in 3 to 5 year olds. Three hundred and thirteen 3-year-old children were recruited from five preschools and 14 daycare centers. The children's language ability was measured by a Wechsler Preschool and Primary Scale of intelligence verbal test and teachers completed measurements for aggression and withdrawal. A peer nomination inventory was used to assess peer rejection. Children were asked to nominate three classmates who they do not like to play with. The research findings showed that peer rejection decreased during the preschool years. Compared with girls, boys showed higher levels of peer rejection and a slower change rate of peer rejection. Girls who were aggressive showed high levels of peer rejection and a slow change rate of peer rejection. Moreover, girls who had a high levels language showed low levels of peer rejection and a slow change rate of peer rejection. These findings imply that language ability could be a protective factor of peer rejection for girls.

• Proceedings of the Korea Electromagnetic Engineering Society Conference
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• 2002.11a
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• pp.141-145
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• 2002

In this paper, we have implemented the reflection type band-rejection filter by employing the 3-㏈ hybrid and the frequency-selective loads. The frequency-selective loads have been achieved with the 3-pole bandpass filter terminated by a 50-ohm load. The reflection type band-rejection filter is less sensitive to unloaded Q-factor of resonator than the conventional one. Measurements and simulations on the presented band-rejection filter in this paper show the excellent performances in passband and rejection-band.

• Journal of Families and Better Life
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• v.34 no.4
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• pp.111-125
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• 2016

The purpose of this study was to model the relations between male and female university students' self-differentiation, rejection sensitivity, and interpersonal anxiety. Questionnaires from 502 university students in Seoul were analysed. The findings are as follows. Firstly, self-differentiation, rejection sensitivity, and interpersonal anxiety were significantly different according to gender. Secondly, the level of differentiation from family regression was higher for both male and female students. And the lower the rejection sensitivity experiencing in vertical relations became, and the lower the rejection sensitivity on horizontal relations was, the lower the interpersonal anxiety became. Thirdly, it was confirmed that for male students, differentiation from family regression affected rejection sensitivity on horizontal relations, and for females, differentiation from emotional reactivity affected ejection sensitivity on both horizontal and vertical relations. Finally, rejection sensitivity played a full mediation parameter when self-differentiation affected interpersonal anxiety, and it was demonstrated differences by gender. This study was meaningful in that it confirmed the relations between male and female university students' self-differentiation, rejection sensitivity, and interpersonal anxiety.

• Transactions of the Korean Society of Automotive Engineers
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• v.5 no.6
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• pp.77-88
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• 1997

The heat rejection to coolant is a dominant factor for building vehicle cooling system such as radiator and cooling fan. Since the vehicle cooling system also has effects on fuel consumption and noise, the study of heat rejection to coolant has been emphasized. However, the study on heat rejection to coolant has been mainly focused on the field that related to the characteristics of combustion and localized heat loss. It is no much of use in design for the entire cooling system because it is focused on such a specific point. In this work, the heat rejection rate to coolant for four different engines are obtained to derive a simple heat transfer empirical formula that can be applied to the engine cooling system design, and it is compared with the other studies. Also, to observe effects of engine operation factors and heat transfer factors on coolant, we measured the metal temperature and the heat rejection rate. The heat rejection to coolant does not depend significantly upon the coolant flowrate, but mainly upon the amount of air fuel mixture and the air fuel ratio as long as the composition of coolant does not change. The reduction of heat rejection to coolant did not effectively improve the fuel consumption, but was mostly converted to raise the exhaust gas temperature and the oil temperature.

• Korean Journal of Child Studies
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• v.29 no.6
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• pp.135-146
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• 2008

This study explored moderating effects of parental rejection on the relationship between corporal punishment and psychological maladjustment of 348 5th and 6th grade elementary school children. Participants responded in school to the Physical Punishment Questionnaire(Rohner, 1997), Parental Acceptance-Rejection Questionnaire(Rohner, 1991), and the Personality Assessment Questionnaire(Rohner, 1991). Results of regression analyses showed that both parental punishment and parental rejection made significant contributions to children's psychological maladjustment. Hierarchical regression analyses showed that parental punishment made significant contributions to maladjustment only when it was influenced by perceived maternal rejection. Conclusions were that apparent relations between parental punishment and children's psychological maladjustment were moderated by children's perceptions of maternal rejection.

• Journal of Electrical Engineering and Technology
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• v.11 no.2
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• pp.463-469
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• 2016

In this paper, the use of a dual composite right/left-handed coplanar waveguide (CPW) transmission line is proposed for the design of a band rejection filter. The notch property of the filter is achieved by combining the convex signal line with the shorted concave meander line, and the equivalent circuit model is extracted from the geometry of the unit cell for organizing the band rejection property. Then the equivalent parameters of the unit cell are analyzed to identify those behaviors. And the dispersion characteristics and energy distributions are simulated. In the end, the band rejection filter is manufactured by cascading two proposed unit cells. We show that the measurement result for the resonant frequency demonstrates good agreement with the simulation result and the band rejection filter provides a rejection performance of 17.5 dB at the stopband frequency ranging from 869 MHz to 894 MHz.

• Journal of Electrical Engineering and information Science
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• v.3 no.1
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• pp.126-130
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• 1998

In this paper, a new interference rejection filter using the data-recycling technique is presented. The reference signal of the interference rejection filter is formed by using chip decisions, which is correlated with the narrowband interference components of the received signal. The decision feedback techniques reduce the distortion of the desired signal, which is introduced by the interference rejection filter through he use of feedback chip decisions. In order to update the filter coefficients a simple and efficient data-recycling technique that has improved performance over the conventional LMS algorithm is used. The performance of the proposed interference rejection filter is compared to filter with conventional LMS linear filter. The results show that the convergence speed of the proposed interference rejection filter using decision feedback and data-recycling technique is significantly faster than that of the conventional filters. Also, BER performance of the interference rejection filter demonstrates the superiority of the proposed filter algorithm.

• Journal of Families and Better Life
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• v.30 no.4
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• pp.1-11
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• 2012

This study examined that the effects of fathers-in-law's and mothers-in law's acceptance-rejection on husbands' and wives' psychological well-being using APIM. Participants were 265 couples living Seoul KyungKi-do and JeJu Island, and their mean age was 39.16 (husbands, SD=7.39) and 36.45 (wives, SD=7.36), respectively. The results of APIM showed that, in father-in law model, actor effects of husbands (the influence of fathers in law acceptance-rejection for husbands on husbands' psychological well-being) were more significant than actor effects of wives (the influence of fathers-in-law's acceptance-rejection for wives on wives' psychological well-being), while partner effects of wives (the influence of fathers in law acceptance-rejection for wives on husbands' psychological well-being) more significant than partner effects of husbands (the influence of fathers' in law's acceptance-rejection for husbands on wives' psychological well-being). In mother-in law model, there were no significant differences both between actor effects of wives and actor effects of husbands, and between partner effects of wives and partner effects of husbands.

• Korean Journal of Human Ecology
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• v.14 no.6
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• pp.947-959
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• 2005

This study examined (1) whether romantic partners' or close friends' acceptance-rejection perceived by college students is related to their psychological adjustment indicated by hostility/aggression, dependency, negative self-esteem, negative self-competence, emotional unresponsiveness, emotional instability, and negative world view; (2) whether parents' behavioral control in childhood and romantic partners' or close friends' behavioral control perceived by college students are related to their psychological adjustment; (3) how parents' behavioral control and acceptance-rejection in childhood perceived by college students are related with each other; and (4) how romantic partners' or close friends' behavioral control and acceptance-rejection perceived by college students are related with each other. The subjects were 163 college students enrolled in universities located in Seoul or Kyungki-do in Korea. The results indicated that college students' perceptions of their romantic partners' or close friends' acceptance-rejection are related to their psychological adjustment, that college students' perceptions of their parents' behavioral control and romantic partners' or close friends' behavioral control are related to their psychological adjustment, and that college students' perceptions of parents' behavioral control are related to their perceptions of parents' hostility/aggression, indifference, and rejection and the results were the same for the romantic partners' or close friends' behavioral control and acceptance-rejection.

• Journal of Families and Better Life
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• v.32 no.3
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• pp.31-44
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• 2014

The purpose of this study is to examine the effect of female adolescents' rejection sensitivity, impulsivity and guilt on their binge eating behavior. Questionnaires on rejection sensitivity, impulsivity, guilt and binge eating behavior were administered to 607 female adolescents in Changwon and Ulsan. Of 572 collected copies, 402 were deemed valid and statistically analyzed through frequency analysis, mean and standard deviation, t-test, Pearson's correlation analysis, multiple regression analysis and stepwise multiple regression analysis using SPSS Win 12.0. The results of the study were as follows: 1) School type was found to make a significant difference in rejection sensitivity, overall impulsivity, guilt and binge eating behavior; however, its influence was not significant on the sub-factors of impulsivity: motor impulsivity, unplanned impulsivity and cognitive impulsivity. 2) For female middle school students, rejection anger sensitivity, rejection depression sensitivity and motor impulsivity were found to have a significant influence on binge eating behavior for both middle school and high school girls. Guilt, however, was found to be influential for female high school students only. 3) Impulsivity was found to have a partial mediating effect on the relationship between female adolescents' rejection sensitivity and binge eating behavior.