• 한국컴퓨터그래픽스학회논문지
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• 제8권3호
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• pp.17-23
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• 2002

영화, 게임, 방송 등의 엔터테인먼트 산업에서 캐릭터 애니메이션에 대한 요구가 증가함에 따라 이를 제작하는 스튜디오에서 모션갭처 장비의 도입을 통해 애니메이션 데이터를 제공하는 사례가 급속히 증가하고 있다. 하지만, 상용 장비들은 고가의 비용 부담으로 인해 엔터테인먼트 산업의 전반적인 매출의 수익창출에 저해요인이 되고 있다. 이러한 배경에서 KAIST VR Lab 에서는 지난 수 년간 저가형 광학식 모션캡처 시스템을 개발하여 왔다. 저가형 시스템을 이용한 경우 마커의 은닉(occlusion), 잡음(noise) 또는 궤적 뒤바뀜(swapping) 등의 이유로 고가의 장비를 사용할 때에 비해 더 많은 후처리 작업을 요한다. 본 논문에서는 이와 같은 문제를 해결하기 위해 인체에 부착된 마커를 그래프 구조로 정의하고 신뢰도 모델을 제시하여 포착된 프레임의 신뢰성을 측정한다. 이러한 신뢰도 모델을 통해 마커의 궤적 재조정(rectification) 알고리즘을 제안한다.

• 임상간호연구
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• 제22권2호
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• pp.183-193
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• 2016

Purpose: This study was conducted to identify factors affecting nursing performance of delirium among general hospital clinical nurses. Methods: This was a cross-sectional study and conducted from July 20 to July 30 2015, with a sample consisting of 167 registered nurses in three general hospitals. Data were analyzed with SPSS 21.0. Results: Nursing performance of delirium had significant positive correlations with knowledge about delirium (r=.25, p=.001), self-confidence in caring for patients with delirium (r=.45, p<.001) and nursing work environment (r=.29, p<.001). In this study, factors affecting nursing performance of delirium were self-confidence in caring for patients with delirium (${\beta}=.33$, p<.001), nursing work environment (${\beta}=.26$, p<.001), experience in nursing education about delirium(${\beta}=.18$, p=.007) and clinical experience (${\beta}=.18$, p=.007). The factors explained 32% of nursing performance of delirium. Conclusion: This study's results can be used as basic data to develope educational programs related to delirium care through continuing education and to improve work environments in developing strategies to enhance nursing performance for patients with delirium.

• Safety and Health at Work
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• 제8권1호
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• pp.77-83
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• 2017

Background: In contemporary China, most parents are dual-earner couples and there is only one child in the family. We aimed to examine the associations of parents' work stress with suicidal ideation among the corresponding adolescent. We further hypothesized that low parental support experienced by adolescents may mediate the associations. Methods: Cross-sectional data from school students and their working parents were used, with 907 families from Kunming City, China. Stress at work was measured by the effort-reward imbalance questionnaire. Perceived parental support was assessed by an item on parental empathy and their willingness to communicate with the adolescent. Suicidal ideation was considered positive if students reported thoughts about suicide every month or more frequently during the previous 6 months. Logistic regression was used to examine the associations. Results: We observed that parents' work stress was positively associated with low parental support, which was in turn associated with adolescent suicidal ideation. The odds ratio for parents' work stress and adolescent suicidal ideation was 2.91 (95% confidence interval: 1.53-5.53), and this association was markedly attenuated to 2.24 (95% confidence interval: 1.15-4.36) after additional adjustment for parental support. Notably, mothers' work stress levels exerted stronger effects on children's suicidal ideation than those of fathers. Conclusion: Parents' work stress (particularly mother's work stress) was strongly associated with adolescent's suicidal ideation, and the association was partially mediated by low parental support. These results need to be replicated and extended in prospective investigations within and beyond China, in order to explore potential causal pathways as a basis of preventive action.

• 한국멀티미디어학회논문지
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• 제22권6호
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• pp.655-664
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• 2019

In this paper, we propose a novel way of combining multiple deep convolutional neural network (DCNN) architectures which work well for accurate video face identification by adopting a serial combination of 3D and 2D DCNNs. The proposed method first divides an input video sequence (to be recognized) into a number of sub-video sequences. The resulting sub-video sequences are used as input to the 3D DCNN so as to obtain the class-confidence scores for a given input video sequence by considering both temporal and spatial face feature characteristics of input video sequence. The class-confidence scores obtained from corresponding sub-video sequences is combined by forming our proposed class-confidence matrix. The resulting class-confidence matrix is then used as an input for learning 2D DCNN learning which is serially linked to 3D DCNN. Finally, fine-tuned, serially combined DCNN framework is applied for recognizing the identity present in a given test video sequence. To verify the effectiveness of our proposed method, extensive and comparative experiments have been conducted to evaluate our method on COX face databases with their standard face identification protocols. Experimental results showed that our method can achieve better or comparable identification rate compared to other state-of-the-art video FR methods.

• 대한간호학회지
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• 제52권1호
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• pp.80-91
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• 2022

Purpose: This study aimed to identify relationships among knowledge and skills about suicide prevention, attitudes toward suicide, and burnout of suicide prevention work of nurses at mental health welfare centers. Methods: An explanatory sequential mixed-method research was conducted. For the quantitative study, the subjects (nurses) were 133 nurses executing suicide prevention work. The data were analyzed using the SPSS 25.0 program. For the qualitative research, 13 nurses with high burnout scores were interviewed. The data were analyzed using theme analysis method. Results: Quantitative results showed the average burnout of suicide prevention work was 54.62 ± 12.51. The burnout of suicide prevention work had significant correlations with attitudes toward suicide (r = .30, p < .001) and suicide prevention skills (r = - .18, p = .037). Qualitative results showed six themes related to burnout of suicide prevention work. They were 'feeling a lack of confidence in one's suicide counselling skills', 'feeling of the limits of one's ability to cope with a suicide crisis', 'feeling regret for not being able to help the clients', 'being over-empathetic to the clients', 'Not being able to understand the clients because the subjects (nurses) opposes committing suicide', and 'thinking that the suicidal thoughts of suicide attempters do not improve'. Conclusion: To reduce burnout of nurses' suicide prevention work at mental health welfare centers, there is a need to develop an educational program considering nurses' attitudes toward suicide and one to enhance their confidence in suicide prevention skills.

• 한국IT서비스학회지
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• 제13권4호
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• pp.65-78
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• 2014

In this study, I explored the causal relationship between acceptance attitudes and the expected effects of smart work. With the rapid development of smart technologies, lots of organizations try to innovate in the conventional working styles for maximizing organizational effectiveness and efficiency. Although many organizations wish to foster smart working environment, they don't have confidence in detailed action plans and effects from it. Therefore, this study that explores the causal relationship between acceptance attitudes and effects may have crucial meaning to organizations pursuing smart work. In this research empirically conducted by questionnaire survey, the acceptance attitudes as predictors and the expected effects of smart work as influenced variables were used. This research analyzed 118 collected data and multiple regression analysis. As a result of analysis, teleworking shows the positive relations to all of dependent variables. And others have a positive or negative influence on cognitive effects of smart work. Results of this study may give implications to organizations that want to implement smart work environment.

• Journal of Information Technology Applications and Management
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• 제21권1호
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• pp.151-163
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• 2014

This paper explores the causal relationship between acceptance attitudes and expected effects of smart work. With the rapid development of smart technologies, lots of organizations try to innovate in the conventional working styles for maximizing organizational effectiveness and efficiency. Although many organizations wish to foster smart working environment, they don't have confidence in detailed action plans and effects from it. Therefore, this study that explores the causal relationship between acceptance attitudes and effects may have crucial meaning to organizations pursuing smart work. In this research empirically conducted by questionnaire survey, the acceptance attitudes as predictors and the expected effects of smart work as influenced variables were used. This research analyzed 118 collected data and multiple regression analysis. As a result of analysis, teleworking shows the positive relations to all of dependent variables. And others have a positive or negative influence on effects of smart work. Results of this study may give implications to organizations that want to implement smart work environment.

• 공학교육연구
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• 제16권3호
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• pp.69-78
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• 2013

This study investigated various attributes that contributed to successful employment in order to develop employment support programs, especially for female engineering students. We surveyed engineering students who graduated between 2006 and 2011. The 401 employed graduates participated in an online survey. The surveys inquired about their attachment towards their major, participation in various academic and non-academic activities, and their participation's contribution to their successful employment. In regards to their majors, women, in general, had lower levels of satisfaction, confidence, attachment, and motivation to succeed in their fields when compared to their male counterparts. These results show that engineering colleges still need to work on empowering female engineering students to gain confidence in their engineering major and attachment. The graduate school experience was highly rated by both men and women, whereas double majors exhibited somewhat lower scores. Among academic activities, part-time work experience and major-related internships were rated as the most helpful, and among extracurricular activities, study-abroad for language training and participation in student council or clubs received high scores. There was little difference between men and women in study-abroad participation, and women participated more actively in student councils. However, women had much less major-related work experience, reaffirming that colleges need to expand internship and field experience programs for female students.

• Safety and Health at Work
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• 제8권2호
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• pp.162-168
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• 2017

Background: Pelvic ring fractures (PRFs) may influence the daily activities and quality of life of the injured. The aim of this retrospective study was to explore the functional outcomes and factors related to return to work (RTW) after PRF. Methods: During the years 2003-2012, 282 injured individuals aged 20-55 years on the date of the accident, were hospitalized and treated for PRFs in a large tertiary hospital in Athens, Greece. One hundred and three patients were traced and contacted; 77 who were on paid employment prior to the accident gave their informed consent to participate in the survey, which was conducted in early 2015 through telephone interviews. The questionnaire included variables related to injury, treatment and activities, and the Majeed pelvic score. Univariate and multiple regression analyses were used for statistical assessment. Results: Almost half of the injured (46.7%) fully RTW, and earning losses were reported to be 35% after PRF. The univariate analysis confirmed that RTW was significantly related to accident site (labor or not), the magnitude of the accident's force, concomitant injuries, duration of hospitalization, time to RTW, engagement to the same sport, Majeed score, and complications such as limp and pain as well as urologic and sexual complaints (p < 0.05 for all). On multiple logistic regression analysis, the accident sustained out of work (odds ratio: 6.472, 95% confidence interval: 1.626-25.769) and Majeed score (odds ratio: 3.749, 95% confidence interval: 2.092-6.720) were identified as independent predictive factors of full RTW. Conclusion: PRFs have severe socioeconomic consequences. Possible predictors of RTW should be taken into account for health management and policies.

• Journal of Korean Biological Nursing Science
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• 제15권3호
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• pp.139-146
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• 2013

Purpose: The purpose of this study was to identify knowledge and the Need of pathophysiology, perceived connectivity between knowledge of pathophysiology and clinical practice, and confidence and satisfaction with clinical performance by applying the knowledge to clinical practice, and to analyze the correlation between the knowledge, perceived connectivity, and confidence and satisfaction of clinical nurses. Methods: Subjects consisted of 149 clinical nurses who work at 7 general hospitals and 6 university hospitals located in Seoul, Incheon, and Gyeonggi province in Korea. Those who learned pathophysiology during their undergraduate program were recruited by using a convenient sampling. The data were collected between April 23 and May 24 in 2012. Participants responded to self-administered questionnaires about knowledge and the need of pathophysiology, and the perceived connectivity between knowledge and clinical practice, and confidence and satisfaction with clinical performance by applying knowledge to clinical practice. Results: Mean scores of knowledge and the need of pathophysiology were $2.88{\pm}0.34$ and $2.33{\pm}0.39$ each. Scores of knowledge and the need of 3 units such as fluid and electrolyte imbalance, acid-base imbalance, and alterations in the respiratory system were high among 23 units while that of adolescent disorders was the lowest. The mean score of perceived connectivity between knowledge and clinical practice was $7.32{\pm}1.57$, and those of confidence and satisfaction with clinical performance by applying the knowledge to clinical practice were $7.66{\pm}1.66$ and $7.42{\pm}1.67$ respectively. Knowledge of pathophysiology was positively correlated with the perceived connectivity between knowledge and clinical practice, and confidence, and satisfaction with clinical performance. Conclusion: The results indicate that knowledge and the need of pathophysiology in clinical nurses is above average, and that knowledge of pathophysiology is important in promoting perceived connectivity with clinical practice and increasing confidence and satisfaction with clinical performance by applying knowledge to clinical practice.