• 보건의료산업학회지
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• 제5권4호
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• pp.41-51
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• 2011

The purpose of this study was to identify self-efficacy and self-concept of professional nursing which might influence clinical practice satisfaction in nursing students. The participants were 278 nursing students in U city. Date were collected from November 29 to December 17, 2010. The collected data was analyzed with the PASW 18.0 statistics program. Self-efficacy had significant positive correlation with self-concept of professional nursing(r=.595, p<.001) and self-concept of professional nursing had significant positive correlation with clinical practice satisfaction(r=.396, p<.001). In multiple regression analysis, self-concept of professional nursing is most influential factor explained 21% of variance of clinical practice satisfaction. The results indicate that to develop a more reasonable and effective curriculum and teaching program for enhancement of students' self-concept of professional nursing.

• 대한의용생체공학회:학술대회논문집
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• 대한의용생체공학회 1995년도 추계학술대회
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• pp.124-127
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• 1995

Due to the self-diffusion of nuclear spins, the edge of phantoms is enhanced in the magnetic resonance imaging (MRI), especially in the case of microscopy [1]. According to several published works, theory has been established that the edge enhancement is caused by the motion narrowing around bounded regions due to diffusions of nuclear spins during data acquisition. It is found, however, that the signal decreases due to the diffusion attenuation and image is distorted as edge of the image is sharpened. In this paper, we wilt investigate this signal loss during data acquisition and its effects on image, i.e., image edge enhancement due to the diffusion phenomenon. This result is new and different from the previously discussed edge enhancement due to the diffusion, namely, by motion narrowing effect or spin bouncing effect at the boundary.

• 한국음향학회지
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• 제41권3호
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• pp.342-350
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• 2022

본 논문에서는 재난 환경과 같은 환경에서의 음성 처리를 위해 실제 드론 소음 데이터를 수집하여 오염 음성 데이터베이스를 구축하고 음성 향상 기법인 스펙트럼 차감법과 심층 신경망을 이용한 마스크 기반 음성 향상 기법을 적용하여 성능을 평가한다. 기존의 심층 신경망 기반의 음성 향상 모델인 VoiceFilter(VF)의 성능 향상을 위해 Self-Attention 연산을 적용하고 추정한 잡음 정보를 Attention 모델의 입력으로 이용한다. 기존 VF 모델 기법과 비교하여 Source to Distortion Ratio(SDR), Perceptual Evaluation of Speech Quality(PESQ), Short-Time Objective Intelligibility(STOI)에 대해 각각 3.77 %, 1.66 %, 0.32 % 향상된 결과를 나타낸다. 인터넷에서 수집한 오염 음성 데이터를 75 % 혼합하여 훈련한 경우, 실제 드론 소음만을 사용한 경우에 비해 상대적인 성능 하락률 평균이 SDR, PESQ, STOI에 대해 각각 3.18 %, 2.79 %, 0.96 %를 나타낸다. 이는 실제 데이터를 취득하기 어려운 환경에서 실제 데이터와 유사한 데이터를 수집하여 음성 향상을 위한 모델 훈련에 효과적으로 활용할 수 있음을 확인해준다.

• 한국정보통신학회논문지
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• 제17권8호
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• pp.1968-1973
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• 2013

전계 흡수 변조기가 집적된 이중 전극 분포 궤환형 레이저를 사용하여 광신호의 변조 응답 향상을 실현하였다. 이 중 전극 구조의 분포 궤환형 반도체 레이저는 자려 펄스 발진 현상으로 인해 수 기가 헤르쯔의 모드 간격을 가진 다중 광모드 발진 현상을 보인다. 이 현상을 이용하여 RF 신호에 대한 광원의 변조 특성을 6 GHz 변조 신호에 대하여 약 20 dB 향상 시켰으며, 이러한 변조 성능 향상에 대하여 7 GHz의 주파수 가변 영역을 얻었다.

• 한국멀티미디어학회논문지
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• 제23권2호
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• pp.135-145
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• 2020

Recently, deep-learning based methods for low-light image enhancement accomplish great success through supervised learning. However, they still suffer from the lack of sufficient training data due to difficulty of obtaining a large amount of low-/normal-light image pairs in real environments. In this paper, we propose an unsupervised learning approach for single low-light image enhancement using the bright channel prior (BCP), which gives the constraint that the brightest pixel in a small patch is likely to be close to 1. With this prior, pseudo ground-truth is first generated to establish an unsupervised loss function. The proposed enhancement network is then trained using the proposed unsupervised loss function. To the best of our knowledge, this is the first attempt that performs a low-light image enhancement through unsupervised learning. In addition, we introduce a self-attention map for preserving image details and naturalness in the enhanced result. We validate the proposed method on various public datasets, demonstrating that our method achieves competitive performance over state-of-the-arts.

• 한국의류학회지
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• 제30권1호
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• pp.59-70
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• 2006

This study has analyzed females' motives and psychological experiences related to appearance-enhancement seeking behavior(weight control practice and cosmetic surgery). In this study, in-depth interviews were carried out to 11 females who had experienced weight control practices and cosmetic surgery in June 2001. There is social standard in ideal body image. One perceive a physical idea and own body through society(mass media, reference group), others and clothing, and recognize the ideal body and internalize the social standard as own worth. The discrepancies between ideal body image internalized as standards of own worth and real body image became a setup for body dissatisfaction. Increasing in body dissatisfaction, rejection of own body grow, furthermore body is perceived with distortion. In order to remove a negative body image and to reach ideal body image, appearance-enhancement seeking behavior such as weight control and cosmetic surgery is made. By appearance enhancing, one come to closer to ideal image of which one pursuit oneself. Therefore body satisfaction feeling increase, self·esteem rise, manner of life and character change to with affirmation. Otherwise, strengthening of appearance-concern and of appearance enhancement seeking desire has the possibility of developing into bulimia and cosmetic surgery addiction. Also, the standard of beauty in appearance rise by degrees, and that produces motives of appearance-enhancement seeking behavior.

• 전기학회논문지
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• 제57권10호
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• pp.1888-1892
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• 2008

In this paper, a new parallel CMOS self-bias differential amplifier is designed to use in high-speed analog signal processing circuits. The designed parallel CMOS self-bias differential amplifier is developed by using internal biasing circuits and the complement gain stages which are parallel connected. And also, the parallel architecture of the designed parallel CMOS self-bias differential amplifier can improve the gain and gain-bandwidth product of the typical CMOS self-bias differential amplifier. With 1.8V $0.8{\mu}m$ CMOS process parameter, the results of HSPICE show that the designed parallel CMOS self-bias differential amplifier has a dc gain and a gain-bandwidth product of 64 dB and 49 MHz respectively.

• 한국사회복지학
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• 제48권
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• pp.243-270
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• 2002

The purpose of this study was to test the effectiveness of cognitive-behavioral therapy to prevent relapse of substance abuse. A total of 8 substance abusing adult clients participated in the program. All the clients were charged with substance use at the time of implementing the program. Two master's level social workers operated the program, which was implemented in a probation office in Seoul. This study included Beliefs about substance use, abstinence self-efficacy, and coping skills as dependent variables in order to investigate the effectiveness. Cognitive-behavioral therapy emphasizes the enhancement of these cognitive and behavioral skills to prevent relapse of substance use. Research hypotheses were partially supported. That is, clients participated in the program had more negative attitude toward substance use and had more effective problem-focused coping skills. Although a research hypothesis of the enhancement of clients' self efficacy was not supported, their mean scores at the final post test were lower than scores at pretest. This study suggests that more studies be needed to in order to confirm the effectiveness of cognitive-behavioral therapy with substance abusing clients.

• 산경연구논집
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• 제10권10호
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• pp.53-65
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• 2019

Purpose - Current study aimed at investigating the effects of the choice easiness as a thought triggered at the time of making decision and the goal achievement emotion as a prediction of how consumers feel in the state of achieving consumption goal on brand purchase intention. And It also explored moderation role of incidental pride type such as ambient hubris pride and ambient authentic pride felt before the event in the effects of message type such as self-verifying message and self-enhancing message on the choice easiness and the goal achievement emotion. Research design, data, and methodology - Message type was divided into self-verifying message and self-enhancing message. Incidental pride type was divided into hubris and authentic pride. Smart mobile phone was selected for empirical study. And the experiment was performed with 2(pride type: hubristic versus authentic) × 2(message type: self-verifying message versus self-enhancing message) between-subjects design. Questionnaires from 215 undergraduate students were used to test hypotheses by Macro process model 7. The hypotheses were tested at each of self-verifying message group and self-enhancing message group. Results - First, both choice easiness and goal achievement emotion positively influenced on the purchase intention at both self-verifying message group and self-enhancing message group. Second, at self-verifying message group, the positive effects of self verification on both choice easiness and goal achievement emotion were higher to the customers under incidental hubris pride than to those under incidental authentic pride customers. Third, at self-enhancing message group, the positive effects of self enhancement on goal achievement emotion were higher to the customers under incidental authentic pride than to those under incidental hubris pride. However, at self-enhancing message group, the positive effects of self enhancement on choice easiness (goal achievement emotion) were not higher (higher) to the customers under incidental authentic pride than to those under incidental hubris pride. Conclusions - Focusing on the results of this study, to promote their brand purchase intention, brand managers should use self-enhancing message to induce goal achievement emotion from incidental authentic pride customers. And the brand managers should develop and use self-verifying message to induce choice easiness as well as goal achievement emotion from hubris pride customers, which in turn, promote their brand purchase intention.

• 한국생활과학회지
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• 제13권3호
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• pp.345-359
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• 2004

Self-efficacy is an important variable determining adolescents' behavior. This study was designed to develope a program for improving teens' self-efficacy. The goal of this program was as follows: (1) to improve self-efficacy by enlarge self-knowledge through in- depth search of one's own inner world, (2) to correct one's inferiority impeding one's inner growth, (3) to improve self-efficacy in family relationship, peer relationship, and academic achievement areas. This program consisted of total 6 sessions, supplemented with interpersonal relationships regarding positive family functioning and the impact of peer groups which were found out in recent researches. Specific strategies such as verbal persuasion, mastery experience, vicarious experience and affective arousal were used.