• 대한음성학회지:말소리
• /
• 제59호
• /
• pp.27-51
• /
• 2006

For speech recognition systems, rejection function as well as decoding function is necessary to improve the reliability. There have been many research efforts on out-of-vocabulary word rejection, however, little attention has been paid on non-target sentence rejection. Recently pronunciation approaches using speech recognition increase the need for non-target sentence rejection to provide more accurate and robust results. In this paper, we proposed filler model method and word/phoneme detection ratio method to implement non-target sentence rejection system. We made performance evaluation of filler model along to word-level, phoneme-level, and sentence-level filler models respectively. We also perform the similar experiment using word-level and phoneme-level word/phoneme detection ratio method. For the performance evaluation, the minimized average of FAR and FRR is used for comparing the effectiveness of each method along with the number of words of given sentences. From the experimental results, we got to know that word-level method outperforms the other methods, and word-level filler mode shows slightly better results than that of word detection ratio method.

• 한국정밀공학회지
• /
• 제19권3호
• /
• pp.52-58
• /
• 2002

The purpose of condition monitoring and fault diagnosis is to detect faults occurring in machinery in order to improve the level of safety in plants and reduce operational and maintenance costs. The recognition performance is important not only to gain a high recognition rate bur a1so to minimize the diagnosis failures error rate by using off effective rejection module. We examined the problem of performance evaluation for the rejection scheme considering the accuracy of individual c1asses in order to increase the recognition performance. We use the Smith's method among the previous studies related to rejection method. Nearest neighbor classifier is used for classifying the machine conditions from the vibration signals. The experiment results for the performance evaluation of rejection show the modified optimum rejection method is superior to others.

• 상하수도학회지
• /
• 제18권2호
• /
• pp.165-173
• /
• 2004

Behavior of hazardous organic compounds including bisphenol A, phtalic acid, and phosphoric acid in low pressure nanofiltration process were investigated. In the case of NTR729HF, rejection of all target organic compounds except 2-H-Benzothiazol and 2-isopropyl phenol was more than 90%. The lowest rejection for 2-H-Benzothiazol was observed in another membranes. The UTC60 and UTC20 showed similar rejection characteristics of hazardous organic compounds. Although the rejection of Bisphenol A, n-buthyl benzenesulfoneamide, N-ethyl-p-toluensulfonamide, 2-H-benzothiazol, p-t-butylphenol and 2-isopropyl phenol was less than 30%, the rejection of tributyl phosphate, triethyl phosphate, camphor, 2,2,4 trimethyl 1,3 pentandiol and diphenyl amine was more than 90% in the case of UTC60 and UTC20. The rejection characteristics of various hazardous organic compounds were converted into one parameter Ks, which was proposed in the diffusion-convection model. The Ks of hazardous organic compounds were discussed by comparing with their solute size represented by Stokes radius. The diffusion convection model considering Ks was successful to interpret rejection characteristics of hazardous organic compounds by low-pressure nanofiltration membranes.

• Human Ecology Research
• /
• 제55권4호
• /
• pp.433-440
• /
• 2017

The purpose of the research was to examine the moderating effects of children's prosocial behavior on a potential relationship of attention-deficit/hyperactivity disorder and peer rejection as well as friendship. Participants consisted of 252, 3 year old including 136 boys and 116 girls. They were recruited from day care centers and preschools in Gyeonggi province and Incheon city. Prosocial behavior and attention-deficit/hyperactivity disorder syndrome were assessed based on teacher ratings. A peer nomination inventory was used to assess peer rejection and friendship. Children were asked to nominate three peers that they liked and considered friends as well as three peers that they did not like and did not consider friends. Findings suggested that prosocial behavior moderated the relation between attention-deficit/hyperactivity disorder and peer rejection as well as friendship. ADHD was related to peer rejection and fewer friends for children with lower levels of prosocial behavior. However, the association of attention-deficit/hyperactivity disorder and peer rejection was not significant for children who had higher levels of prosocial behavior. Moreover, attention-deficit/hyperactivity disorder did not influence to friendship for children who had the higher levels of prosocial behavior. The results indicate that increasing prosocial behavior may improve peer relationship functioning of children with attention-deficit/hyperactivity disorder.

• Human Ecology Research
• /
• 제57권3호
• /
• pp.445-457
• /
• 2019

This study investigated the impact of parentification on ambivalence over the emotional expression of early adults who had a sibling with disabilities and examined if rejection sensitivity moderated the relationship of parentification and ambivalence over emotional expression. Participants consisted of 116 siblings in early adulthood who had a sibling with disabilities (45 male; 71 female). The data were collected from 13 centers for family disability, four community rehabilitation centers, three parent societies for people with disabilities, and three self-help groups in Seoul, Busan, and Gyeonggi province. The levels of ambivalence over emotional expression, parentification, and rejecton sensitivity were measured by the Ambivalence over Emotional Expression Questionnaire (King & Emmons, 1990), the Filial Responsibility Scale-Adult (Jurkovic, Thirkield, & Morrell, 2001), and the Rejection Sensitivity Questionnaire (Downey & Feldman, 1996), respectively. The PROCESS Macro program examined the moderating model. The Results indicated that both levels of parentification and rejection sensitivity increased the level of ambivalence over emotional expression of non-disabled siblings. In addition, rejection sensitivity moderated the effect of parentification on ambivalence over emotional expression. The influence of parentification on ambivalence over emotional expression was greater when the level of rejection sensitivity was high, compared to when it was low.

• 한국사회복지학
• /
• 제37권
• /
• pp.357-379
• /
• 1999

본 연구는 중학교에서의 또래따돌림에 영향을 미치는 요인을 서열프로빗 분석을 이용해 살펴보고자 한 연구이다. 특히, 개인, 가족 특성이외의 폭력에의 노출, 교칙의 공정성, 부정적인 또래관계 등 환경적 요인이 또래따돌림에 어떠한 영향을 미치는가 살펴보고자 하였다. 아울러 또래따돌림의 경험이 따돌림과 같은 또래폭력에 대한 방관적 태도와 어떠한 관계에 있는지 알아보았다. 조사대상자들은 서울시내에 소재한 12개 중학교 20개 학급에서 총 714명의 중학생들로 구성되었다. 서열프로빗 분석은 LIMDEP 7.0을 통해 분석되었고, 기술통계와 변량분석은 윈도용 SPSS 8.0을 사용하였다. 조사 결과 조사대상학교의 학생들중 35.8%가 다른 학생들을 따돌려본 적이 있다고 응답했고, 25.9%의 학생들이 또래따돌림을 당하는 것으로 나타났다. 남녀별로는 또래따돌림 가해경험의 차이가 없었으며, 대신 저학년에서 많이 발생하고 있었다. 개인적 특성으로는 공격성과 교칙위반행동의 경험이 많을수록, 또래따돌림에 더 많이 참여하고 있었다. 하지만, 부모의 양육태도, 결손가족여부, 학업성적, 학업에 대한 태도 등 가족 및 학교생활 요인은 또래따돌림행위에 유의미한 영향을 미치지 못하였다. 반면 또래따돌림을 당한 적이 있거나, 주변에서 따돌림이 많이 발생하는 학교에 재학중인 학생일수록 또래따돌림에 참여할 가능성이 높은 것으로 나타났다. 이러한 결과는 또래따돌림의 문제를 단순히 개인차원의 상담으로 풀어나가기 힘듦을 보여주는 것이다. 아울러 가해자와 피해자가 이분적으로 구분되는 형태가 아니라, 피해경험을 통해 가해경험을 학습하고 심화시킬 수 있는 중첩적인 관계에 있음을 발견하였다. 궁극적으로 또래따돌림의 문제를 해결하기 위해서는 학교를 개입단위로 하는 예방프로그램과 전문적 원조체계의 도입이 시급함을 제언하였다.

• 대한안전경영과학회:학술대회논문집
• /
• 대한안전경영과학회 2012년 추계학술대회
• /
• pp.431-434
• /
• 2012

The paper reviews properties of hypothesis decision approaches using rejection region and significance probability. The study also presents the guidelines for quality practioners to implement most useful hypothesis testing techniques such as RR(Rejection Region) approach and P-Value approach.

• 제어로봇시스템학회:학술대회논문집
• /
• 제어로봇시스템학회 1996년도 Proceedings of the Korea Automatic Control Conference, 11th (KACC); Pohang, Korea; 24-26 Oct. 1996
• /
• pp.223-226
• /
• 1996

The moving vehicle with disturbances has the 6 dof motion in the pitching, yawing and rolling directions of two independent axes. The control system in such a moving vehicle has to perform disturbance rejection well. The paper presents PID controller with disturbance rejection function, low sensitivity filter and notch the bending frequency rejection. The performance of a designed system has been certified by the simulation and experiment results.

• 대한전자공학회:학술대회논문집
• /
• 대한전자공학회 2004년도 하계종합학술대회 논문집(1)
• /
• pp.249-252
• /
• 2004

Recently, wireless repeater with interference rejection has been considered for the next generation repeater. In this paper, adaptive interference rejection module suppressing interference in the 3G band is proposed. A novel adaptive rejection scheme is proposed and it is partially implemented by FPGA devices.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2005년도 제36회 하계학술대회 논문집 A
• /
• pp.84-86
• /
• 2005

Adaptive tracking, disturbance rejection and power system stabilizer. First, this paper deals with power system stabilization problem using asymptotic tracking of arbitrary smooth bounded reference output signals, with simultaneous rejection of disturbances generated by an unknown linear exosystem. Second, this paper presents a power system stabilizer(PSS) using nonlinear adaptive observer backstepping controller.