• Title, Summary, Keyword: rejection

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Developmental Trajectories for Peer Rejection in Preschool Children Based on Latent Growth Model (잠재성장모형을 적용한 유아기 또래거부의 발달궤적)

  • Shin, Yoo Lim
    • Family and Environment 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.

A Reflection Type Band-rejection Filter Using the Frequency Selective Loads (주파수 선택적 부하를 이용한 반사형 대역저지 필터)

  • 김윤조;정승환;황희용;정중성;박준석
    • Proceedings of the Korea Electromagnetic Engineering Society Conference
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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.

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A Study on the Heat Rejection to Coolant in a Gasoline Engine (가솔린 엔진에서의 냉각수로의 전열량에 대한 연구)

  • 류택용;신승용;이은현;최재권
    • 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.

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The Effects of University Students' Self-Differentiation and Rejection Sensitivity on Interpersonal Anxiety : Moderated Mediating by Gender (대학생의 자아분화 및 거부민감성이 대인불안에 미치는 영향 : 성별에 따른 조절된 매개효과)

  • Kim, Na Ru Mi;Park, Bu Jin;Kim, Se Young
    • Journal of Korean Home Management Association
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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.

Quilty Lesions in the Endomyocardial Biopsies after Heart Transplantation

  • Cho, Haeyon;Choi, Jin-Oh;Jeon, Eun-Seok;Kim, Jung-Sun
    • Journal of Pathology and Translational Medicine
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    • v.53 no.1
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    • pp.50-56
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    • 2019
  • Background: The aim of this study was to investigate the clinical significance of Quilty lesions in endomyocardial biopsies (EMBs) of cardiac transplantation patients. Methods: A total of 1190 EMBs from 117 cardiac transplantation patients were evaluated histologically for Quilty lesions, acute cellular rejection, and antibody-mediated rejection. Cardiac allograft vasculopathy was diagnosed by computed tomography coronary angiography. Clinical information, including the patients' survival was retrieved by a review of medical records. Results: Eighty-eight patients (75.2%) were diagnosed with Quilty lesions, which were significantly associated with acute cellular rejection, but not with acute cellular rejection ≥ 2R or antibody-mediated rejection. In patients diagnosed with both Quilty lesions and acute cellular rejection, the time-to-onset of Quilty lesions from transplantation was longer than that of acute cellular rejections. We found a significant association between Quilty lesions and cardiac allograft vasculopathy. No significant relationship was found between Quilty lesions and the patients' survival. Conclusions: Quilty lesion may be an indicator of previous acute cellular rejection rather than a predictor for future acute cellular rejection.

Interference Rejection using the Data-Recycling Algorithm in DS Spread-Spectrum Communications

  • Kim, Nam-Yong
    • 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.

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Moderating Effects of Parental Rejection on the Relationship between Corporal Punishment and Psychological Maladjustment of Children (부모 체별과 아동의 심리적 부적응 관계에서 부모 거부의 중재효과)

  • Yi, Su Hee;Lee, Jae Yeon
    • 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.

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D-CRLH Based Band Rejection Filter using a Concavo-Convex Coupled CPW Transmission Line

  • Seo, Soo-Duk;Cho, Hak-Rae;Yang, Doo-Yeong
    • 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.

Parental and Partner Acceptance-Rejection, Behavioral Control, and Psychological Adjustment Among Korean College Students (대학생이 지각한 부모 및 부모 이외 애착대상의 수용-거부, 행동통제와 심리적 적응 간의 관계)

  • Chyung, Yun-Joo;Lee, Ju-Lie
    • 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.

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The Effect of Female Adolescents' Rejection Sensitivity, Impulsivity and Guilt on Binge Eating Behavior (여자 청소년의 거절민감성, 충동성 및 죄책감이 폭식행동에 미치는 영향)

  • Yoon, Chae Rim;Shin, Joo Young;Kim, Jung Min
    • Journal of Korean Home Management Association
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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.