• 제목/요약/키워드: Sensitivity study

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Conceptual Study of Brain Dedicated PET Improving Sensitivity

  • Shin, Han-Back;Choi, Yong;Huh, Yoonsuk;Jung, Jin Ho;Suh, Tae Suk
    • 한국의학물리학회지:의학물리
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    • 제27권4호
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    • pp.236-240
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    • 2016
  • The purpose of this study is to propose a novel high sensitivity neuro-PET design. The improvement of sensitivity in neuro-PET is important because it can reduce scan time and/or radiation dose. In this study, we proposed a novel PET detector design that combined conical shape detector with cylindrical one to obtain high sensitivity. The sensitivity as a function of the oblique angle and the ratio of the conical to cylindrical portion was estimated to optimize the design of brain PET using Monte Carlo simulation tool, GATE. An axial sensitivity and misplacement rate by penetration of ${\gamma}$ rays were also estimated to evaluate the performance of the proposed PET. The sensitivity was improved by 36% at the center of axial FOV. This value was similar to the calculated value. The misplacement rate of conical shaped PET was about 5% higher than the conventional PET. The results of this study demonstrated the conical detector proposed in this study could provide subsequent improvement in sensitivity which could allow to design high sensitivity PET for brain imaging.

민감성이 패션 혁신성에 미치는 영향 (Exploring the Role of Sensitivity on Fashion Innovativeness)

  • 박혜정
    • 복식문화연구
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    • 제15권6호
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    • pp.1078-1083
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    • 2007
  • The purpose of this study is to identify the relationships among price sensitivity, brand sensitivity, and fashion innovativeness. The data used in this study were gathered through surveying university students residing in Seoul metropolitan area using convenience sampling method. One hundred thirty eight questionnaires were used in statistical analysis, confirmatory factor analysis and path analysis using structural equation modeling. The results showed that the higher the price sensitivity, the lower the fashion innovativeness and the brand sensitivity.

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간호대학생의 인권감수성 향상교육을 통한 인권감수성과 환자권리 인식의 융합적 관계에서 효과성 (Effectiveness in the Converged relationship between human rights sensitivity and patient rights awareness through nursing students' human rights sensitivity improvement education)

  • 범은애;전열어;최애숙;구정아
    • 한국융합학회논문지
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    • 제11권11호
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    • pp.81-88
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    • 2020
  • 본 연구는 간호 대학생을 대상으로 인권감수성 향상교육을 통한 인권감수성 및 환자권리인식의 효과성을 파악하여 효율적인 인권감수성 교육 방안을 마련하고자 시도되었다. 연구대상은 간호 대학생 318명으로 인권감수성 향상교육 실시 전과 후의 인권감수성과 환자권리인식을 파악한 비동등성 대조군 전후설계로 진행하였다. 연구결과 대상자 인권감수성은 총 90점 만점의 평균 40.22점이며, 각 문항별 점수 환산 시 평균 2.23점이었다. 사례기반 인권감수성 향상을 위한 교육을 받은 학생은 교육을 받지 않는 학생보다 인권감수성과 환자권리인식이 향상됨을 보였다(t=2.765,p=.006, t=-5.768,p=.000). 이에 본 연구는 간호대학생의 인권감수성을 증가시킬 수 있는 교육과정 기반 마련과 추후 임상실습과 인권감수성과의 관계연구를 제안하고자 한다.

소비자의 체면민감성과 아웃도어웨어 구매행동 연구 -과시소비의 매개효과 분석- (The Study of Social-Face Sensitivity and Consumer Purchasing Behavior with Outdoor Wear -Mediating Effect of Conspicuous Consumption-)

  • 진대건;유소이
    • 패션비즈니스
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    • 제22권2호
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    • pp.14-26
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    • 2018
  • This study was to explore purchasing behavior and repurchase intention by considering social-face sensitivity and conspicuous consumption. To do this, first, this study tried to explain how consumers had different characteristics for social-face sensitivity, conspicuous consumption, purchasing behavior, and repurchase intention for outdoor wear. Second, this study tested the relationship between consumer behavior (purchasing behavior and repurchase intention) and social-face sensitivity by considering the mediating effect of conspicuous consumption. As the results, first, there was a significant relationship between social-face sensitivity (sensitivity to saving face) and conspicuous consumption, which had a significant effect on the purchasing behavior with outdoor wear(purchase frequency, purchase cost). Second, social-face sensitivity (consciousness of shame) had a significant effect on conspicuous consumption (preference for famous brands, status symbol, pursuing fashion), and social face sensitivity (consciousness of social formality) had a significant effect on conspicuous consumption (preference for famous brands). The relationship between the conspicuous consumption and purchasing behavior showed that conspicuous consumption had significant effects on consumer behavior (purchase frequency, purchase cost). The relationship between the social-face sensitivity and purchasing behavior showed that being conscious of others had a significant effect on purchasing behavior. Third, purchasing behavior with outdoor wear had a significant effect on repurchase intention. Finally, this study confirmed that conspicuous consumption had a partially significant mediating effect on the relationship between social-face sensitivity (sensitivity to saving face) and purchasing behavior.

보육교사의 마음챙김이 교사민감성에 미치는 영향: 소진의 매개효과 (The Effects of Child Care Teachers' Mindfulness on Teacher Sensitivity: The Mediating Effect of Burnout)

  • 박나연;한세영
    • 한국보육지원학회지
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    • 제14권6호
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    • pp.69-88
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    • 2018
  • Objective: The purpose of this study was to examine the relationships between child care teachers' mindfulness, burnout, and sensitivity. Also, the effects of child care teachers' mindfulness on teacher sensitivity, including the mediating effects of burnout, were investigated. Methods: A total of 263 child care teachers who work in Seoul, Gyeonggi and Incheon participated in this study. Data were analyzed by correlations and regressions using SPSS 21.0. Results: First, there were significant correlations between child care teachers' mindfulness, burnout and teacher sensitivity. Second, the relationship between mindfulness and teacher sensitivity was partially mediated by burnout. To be specific, mindfulness not only had a direct effect on teacher sensitivity, but also had an indirect effect on teacher sensitivity through burnout. Among the three dimensions of burnout, the decrease of personal accomplishments had the biggest significant mediation effect on the relationship between mindfulness and teacher sensitivity. Conclusion/Implications: In conclusion, this study highlights the importance of mindfulness in reducing burnout and enhancing teacher sensitivity toward children. Also, this research has implications for future research regarding the mindfulness of child care teachers and offers a foundation for the development of mindfulness training programs for child care teachers.

간호대학생의 문화적 민감성에 영향을 미치는 요인 (Factors Influencing Cultural Sensitivity among Nursing Students)

  • 오원옥
    • Child Health Nursing Research
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    • 제17권4호
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    • pp.222-229
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    • 2011
  • Purpose: This study was conducted to determine the predictors of cultural sensitivity for nursing students in Korea. Methods: The participants in this study were 332 nursing students. Data collection was conducted through the use of questionnaires which were constructed to include a Cultural Sensitivity Scale, Knowledge of Culture, Interpersonal Reaction Index, and Self-efficacy Scale. Results: Results showed that cultural sensitivity of nursing students was middle range. Knowledge level of culture was very low. There was a significant positive correlation between cultural sensitivity and knowledge of culture, empathy, and self-efficacy. The significant factors influencing cultural sensitivity of nursing students were empathy, self-efficacy, experience of an overseas trip and awareness of cultural education. These four factors explained 23.8% of the variance in cultural sensitivity of nursing students. Conclusion: These results indicate that cultural sensitivity is an important link with empathy and self-efficacy in nursing students. For nursing students to enhance cultural sensitivity, a transcultural nursing curriculum needs to develop for appropriate and effective services in cross-cultural situations of the multicultural families in Korea.

패션 소비자들의 브랜드 민감성과 공적 자기의식에 관한 연구 (Brand Sensitivity and Public Self-Consciousness among Fashion Consumers)

  • 이승희
    • 패션비즈니스
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    • 제14권4호
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    • pp.102-110
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    • 2010
  • The purposes of this study were to examine the relationship between brand sensitivity and public self-consciousness, and the effects of gender and age on brand sensitivity and public self-consciousness. The subject used for this study were three hundred and thirty-five college students (118 male students and 217 female students). For data analysis, descriptive statistics, Cronbach's alpha, multiple regression, and t-test were used. As the results, first, there were the significant differences between male students and female students on brand sensitivity and public self-consciousness. Female students had higher scores on brand sensitivity and public self-consciousness than male students as expected. Second, there were the significant differences between younger college students and older college students on brand sensitivity and public self-consciousness. Older college students had higher scores on brand sensitivity and public self-consciousness than younger college students. Finally, public self-consciousness influenced on brand sensitivity the most significantly, followed by age variable. Based on these results, brand management marketing strategy of fashion products would be provided.

중학생의 인터넷 사용시간이 사이버불링 가해행동에 미치는 영향과 정의민감성의 조절효과 (Effect of the Amount of Time Online on Cyberbullying Perpetration in Middle School Students and the Moderating Role of Justice Sensitivity)

  • 박주희
    • Human Ecology Research
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    • 제56권6호
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    • pp.619-626
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    • 2018
  • This study investigated the impact of the amount of time online on cyberbullying perpetration of middle school students as well as examined if the justice sensitivity (victim sensitivity and penetrator sensitivity) moderated the relationship between the amount of time online and cyberbullying perpetration. The participants in this study were 236 students (120 boys and 116 girls) from two middle schools located in Seoul and Incheon. The levels of cyberbullying perpetration and justice sensitivity were measured by scales developed by Campfield (2008) and Schmitt et al. (2010), respectively. The participants were also asked to report on how much time they spent online a day. The data were analyzed via descriptive statistics, hierarchical regression, and procedures mentioned by Baron and Kenny (1986). The results revealed that the more the students used the Internet, the more likely they were to become a cyberbullying perpetrator. However, such a tendency was observed only for the students who had a higher level of victim sensitivity, and not for those with a lower level of victim sensitivity. This suggested that victim sensitivity moderated the effect of the amount of time spent on the Internet on cyberbullying perpetration; but, penetrator sensitivity had no moderating effect.

진동식 촉각 자극에 대한 손의 상대적 민감도 반응 (Human Sensitivity Responses to Vibrotactile Stimulation on the Hand : Measurement of Differential Thresholds)

  • 이성일
    • 대한인간공학회지
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    • 제18권3호
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    • pp.1-12
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    • 1999
  • This study investigated human operator's perceptual and psychophysical responses to vibrotactile stimulation on various parts of the hand. Using a small vibrotactile display, the effects of three mechanical parameters consisting vibrotactile stimulations, i.e., vibration frequency, pulse-width modulation duty cycle, and number of contactors, on differential thresholds were examined at five different loci of the hand. It was observed that differential threshold varies with vibration frequency and number of active contactors. Differential sensitivity was the greatest at the vibration frequency of 120 Hz. The differential sensitivity was not found to be affected by loci on the hand. The area of stimulation on the hand was also found to be significant in that the sensitivity increased with the number of active contactors. It should be noted that the conclusions from this study generally correspond to those from the previous study on the absolute sensitivity. which means that tactile sensitivity to vibrotactile stimulations can be controlled with a systematic and consistent passion for emulating normal everyday contact on human hands in teleoperation and virtual reality applications.

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