• Journal of Korea Multimedia Society
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• v.19 no.12
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• pp.1960-1969
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• 2016

In this paper, we propose an automatic hierarchical organ segmentation method on abdominal CT images. First, similar atlases are selected using bone-based similarity registration and similarity of liver, kidney, and pancreas area. Second, each abdominal organ is roughly segmented using image-based similarity registration and intensity-based locally weighted voting. Finally, the segmented abdominal organ is refined using mask-based affine registration and intensity-based locally weighted voting. Especially, gallbladder and pancreas are hierarchically refined using location information of neighbor organs such as liver, left kidney and spleen. Our method was tested on a dataset of 12 portal-venous phase CT data. The average DSC of total organs was $90.47{\pm}1.70%$. Our method can be used for patient-specific abdominal organ segmentation for rehearsal of laparoscopic surgery.

• The Mathematical Education
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• v.50 no.1
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• pp.103-118
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• 2011

The study examined whether the relation between mathematics self-efficacy and mathematics achievement was partially mediated by the learning strategies, using latent growth model analyses. It was also examined the auto-regressive, cross-lagged (ARCL) panel model for testing the stability and change in the relation of mathematics self-efficacy and learning strategy over time. The study analyzed the first-year to the third-year data of the Korean Educational Longitudinal Survey (KELS). The result of ARCL panel model analysis showed that earlier mathematics self-efficacy could predict later learning strategy use. There were linear trends in mathematics self-efficacy, learning strategy, and mathematics achievement. Specifically, mathematics achievement was increased over the three time points, whereas mathematics self-efficacy and learning strategies were significantly decreased. In the analyses of latent growth models, the mediating effects of learning strategies were overall supported. That is, both of initial status and change rate of rehearsal strategy partially mediated the relation of mathematics self-efficacy and mathematics achievement. However, in elaboration and meta-cognitive strategies, only the initial status of each variable showed the indirect relationship.

• Journal of Korean Academy of Nursing Administration
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• v.18 no.2
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• pp.146-154
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• 2012

Purpose: The purpose of this study was to examine the effects of preceptor nurses' self-leadership on role recognition and job satisfaction. Method: The participants were 171 preceptor nurses worked in one of three general hospitals in Seoul. The data were collected from April 12 to May 12, 2011 and analyzed using descriptive statistics, t-test, ANOVA, pearson correlation, Scheffe, and regression with SPSS Win 19.0 program. Result: The results of the study were as followed. The average score for preceptor nurses' self-leadership was 3.55, for role recognition, 3.81 and for job satisfaction, 3.28. The factors of the preceptors' self-leadership affecting role recognition were self-expectation (${\beta}$=260, p=.002) and goal setting (${\beta}$=199, p=.030), and those factors accounted for 18.9% of explanatory power. The factors of self-leadership influencing job satisfaction were self-expectation (${\beta}$=18.3, p=.021), and rehearsal (${\beta}$=-168, p=.030), and those factors accounted for 31.3% of explanatory power. Among the factors of self-leadership, self-expectation influenced both role recognition and job satisfaction. Conclusions: The results of the study indicate that to improve preceptor's role recognition and job satisfaction, there should be special training programs to enhance preceptor's self leadership.

• Journal of Engineering Education Research
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• v.12 no.2
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• pp.89-95
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• 2009

This thesis investigated way of employment, education course of a training school of Programmable Logic Controller a Field. I inquired into a demand of an engineer and a necessary level of professional education. As a result, I have a purpose in what offer the information that cared for a beginning to work elevation and education training and boat development of a student more than. Faced a human power demand in an education demand and a field rehearsal student demand and analyzed it. The sample extraction used industrial classification, work of scale, Assignment sample extraction way (quota sampling). All data called at a silver phone and the investigated, The data parser analyzed the statistics that used Microsoft Excel.

• Journal of Engineering Education Research
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• v.11 no.3
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• pp.90-95
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• 2008

This thesis investigated way of employment, education course of a training school of electrical company. I inquired into a demand of an engineer and a necessary level of professional education. As a result, I have a purpose in what offer the information that cared for a beginning to work elevation and education training and boat development of a student more than. Faced a human power demand in an education demand and a field rehearsal student demand and analyzed it. The sample extraction used industrial classification, work of scale, Assignment sample extraction way (quota Sampling). All data called at a silver phone and the investigated, The data parser analyzed the statistics that used Microsoft Excel.

• The Journal of Korean Academic Society of Nursing Education
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• v.22 no.2
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• pp.125-136
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• 2016

Purpose: This study aimed to identify the relationship between positive affectivity, self-leadership, and satisfaction of clinical practice among nursing students. Methods: This study was a descriptive correlational study. A total of 205 participants were obtained by convenience sampling from third- and fourth-year nursing students in three nursing schools. The data were collected by using a self-reporting questionnaire. Collected data were analyzed with SPSS Win 18.0. Results: Mean scores were 3.40 (5-point scale) for positive affectivity, 3.68 (5-point scale) for self-leadership, and 3.30 (5-point scale) for satisfaction of nursing clinical practice. There was a significant positive correlation of nursing students among positive affectivity (r=.43, p<.001), self-leadership (r=.41, p<.001), and satisfaction of clinical practice. The predictors were levels of satisfaction about nursing major, grade, positive affectivity, and rehearsal, which accounted for 34% of the variance in satisfaction with clinical practice nursing students. Conclusion: It is necessary to enhance the levels of satisfaction about nursing major, the level of positive affectivity, and self-leadership in nursing students. The results of this study delineate the need for the development and application of diverse educational programs that can increase positive affectivity and self-leadership for clinical practice.

• Journal of International Society for Simulation Surgery
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• v.2 no.1
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• pp.17-25
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• 2015

Purpose In this paper, we propose a robust 3D vessel tracking algorithm by utilizing an active contour model and unscented Kalman filter which are the two representative algorithms on segmentation and tracking. Materials and Methods The proposed algorithm firstly accepts user input to produce an initial estimate of vessel boundary segmentation. On each Computed Tomography Angiography (CTA) slice, the active contour is applied to segment the vessel boundary. After that, the estimation process of the unscented Kalman filter is applied to track the vessel boundary of the current slice to estimate the inter-slice vessel position translation and shape deformation. Finally both active contour and unscented Kalman filter are inter-operated for vessel segmentation of the next slice. Results The arbitrarily shaped blood vessel boundary on each slice is segmented by using the active contour model, and the Kalman filter is employed to track the translation and shape deformation between CTA slices. The proposed algorithm is applied to the 3D visualization of chest CTA images using graphics hardware. Conclusion Through this algorithm, more opportunities, giving quick and brief diagnosis, could be provided for the radiologist before detailed diagnosis using 2D CTA slices, Also, for the surgeon, the algorithm could be used for surgical planning, simulation, navigation and rehearsal, and is expected to be applied to highly valuable applications for more accurate 3D vessel tracking and rendering.

• Korean Journal of Child Studies
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• v.26 no.4
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• pp.263-278
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• 2005

The purpose of this study was to develop a social skills training program for rejected young children and to investigate the effects of the program. The developed program used several kinds of interaction methods such as instruction, modeling, rehearsal, feedback, and positive reinforcement. The contents of the program are consisted of role-play, art, language activities, and games. The experimental group with a sample of 9 four-year-old children was those children rejected by peers. There were the other 9 children assigned to the control group. The experimental group received the social skills training program for 50-60 minutes per day twice a week during 12 sessions, and the control group received no treatment. And 9 popular children also joined the program from ninth to eleventh sessions. As compared to the control group, children in the experimental group showed a significant increase in peer acceptance and social skills after they participated in the program.

• Journal of Korean society of Dental Hygiene
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• v.13 no.5
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• pp.855-861
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• 2013

Objectives : This study aims to investigate the relationship between the self-leadership and stress of students majoring in dental hygiene in clinical practice. This study will be helpful to cope with clinical practice effectively. Methods : Subjects were 221 dental hygiene students from 4 universities in Daegu and Gyeongbuk. Data were abalyzed by independent t-test and multiple regression analysis. Results : Stress-response was 60.36 points in high self-leadership group and 57.20 points in kow self-leadership group. It was statistically significant. Clinical practice-induced stress was made by self-expectation, rehearsal, and self-criticism. Stress was able to be overcome by self-reward and positive mind. Conclusions : It is necessary to take the curriculum into consideration which can improve the self-leadership before the clinical practice or at the early phase of clinical practice in order to ensure that the students majoring in dental hygiene are exposed to less stress arising from clinical practice and better cope with such stress.

• Korean Medical Education Review
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• v.18 no.2
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• pp.83-89
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• 2016

The purpose of this study was to elucidate to what extent the goals of the leadership training program implemented in a medical college were achieved. Study subjects consisted of 74 first-year premedical students at the College of Medicine of The Catholic University of Korea. All participants completed two questionnaires: an 18-item self-leadership questionnaire asking self-expectation, rehearsal, goal setting, self-rewards, self-judgment and constructive thinking, and a 28-item self-efficacy questionnaire asking preference toward difficult work, efficacy of self-control, and confidence before and after the leadership training program. Students also competed a program satisfaction survey after the program. The collected data were analyzed with a paired t-test, descriptive statistics by IBM SPSS ver. 20.0 (IBM Co., Armonk, NY, USA). Students' overall satisfaction with the program scored 4.06 out of 5. The scores of self-leadership and self-efficacy increased after the leadership training program except for 'confidence' in self-efficacy. The results indicate that an intensive leadership program in a short period of time could help to enhance social competencies such as communication skills, empathy, self-reflection, and teamwork of premedical students.