• Journal of KIISE:Software and Applications
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• v.34 no.7
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• pp.681-687
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• 2007

Face recognition technique is very popular for a personal information security and user identification in recent years. However, the face recognition system is very hard to be implemented due to the difficulty where change in illumination, pose and facial expression. In this paper, we consider that an illumination change causing the variety of face appearance, virtual image data is generated and added to the D-LDA which was selected as the most suitable feature extractor. A less sensitive recognition system in illumination is represented in this paper. This way that consider nature of several illumination directions generate the virtual training image data that considered an illumination effect of the directions and the change of illumination density. As result of experiences, D-LDA has a less sensitive property in an illumination through ORL, Yale University and Pohang University face database.

• The Journal of the Korea Contents Association
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• v.21 no.9
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• pp.714-722
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• 2021

In this study, intends to propose virtual reality education contents for fundamental nursing skills to develop various teaching methods in nursing education. Blood sugar test & insulin subcutaneous injection among the 20 core fundamental nursing skills is one of that frequently performed and can be used for self-management education for diabetic patients. This study designed a core fundamental nursing skill on immersive VR contents by dividing the learner's experience into three stages: guide, mission, and feedback with these skills. And it is designed by tracking the movement of the hand through finger joint recognition without using a controller for immerse in training. This study will help develop VR nursing education contents that can improve clinical practice competency and the effect of the nursing education.

• Journal of the Korea Convergence Society
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• v.9 no.11
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• pp.291-297
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• 2018

Due to difficulty in minimally invasive surgery, training simulator is actively researched. A volumetric deformable organ is created by employing a shape-retaining chain-linked (S-chain) model to realize positioning a human organ model in virtual space. Since the main principle of the S-chain algorithm is that the repulsive force is proportional to the number of chain elements, the calculation time can be increased according to the magnitude of deformation. In this work, the advanced S-chain algorithm is used to calculate the repulsive torque according to spin motion. Finally, haptic architecture was constructed using this S-chain model by incorporating the virtual organ with a real master device, which allows the repulsive force and target position to be transferred to each other. The control performance of S-chain algorithm has been evaluated via experiment.

• Journal of Industrial Convergence
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• v.19 no.5
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• pp.91-102
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• 2021

The purpose of this study was to systematically review about randomized controlled trials the characteristics and effect of cognitive function intervention for patient with dementia. We searched studies published from January 2010 to June 2021 in 5 databases. A total 1,104 studies were found and included 27 studies in final analysis. Methodological quality was assessment with the Cochrane's RoB(risk of bias) tool. Mini-Mental State Examination(MMSE) was the most used as the assessment tool for identifying the cognitive function. Cognitive function intervention were exercise, art, cognitive stimulation, reminiscence, music, multimodal cognitive rehabilitation, virtual reality, horticultural, computerized cognitive training, intentional snoezelen, beauty, cooking, korean traditional familiarity program. Most of the intervention except exercise 2, virtual reality 1, beauty 1 were effective in improving cognitive function. This study provided a clinical evidence for planning and implementing intervention for cognitive function intervention. In the future, various intervention studies suitable for the characteristics of dementia should be conducted by improving the quality of research methods.

• The Journal of the Korea Contents Association
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• v.22 no.1
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• pp.431-443
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• 2022

The purpose of this study is to share and assess the experiences of the emergency remote teaching method adopted for the medical communication course at a medical school due to the COVID-19 pandemic. The standardized patients hired for this 'Emergency Remote Teaching (hereafter ERT)' course said that students' interactions with them were less enthusiastic and less realistic, However, in the one-on-one virtual practice, the students seemed to be more focused than in the existing face to face practice. There were no differences in the unit practice test scores between ERT and the face-to-face course while in the face-to-face final exam, the test scores of FTF students were statistically higher than those of the ERT students, which might have resulted from the different methodologies of teaching. Further research on the virtual medical communication course is necessary to prepare medical students for the adoption of the telemedicine which could be accelerated in the near future.

• The Journal of Korean Academic Society of Nursing Education
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• v.27 no.4
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• pp.423-435
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• 2021

Purpose: The purpose of this study is to identify the educational needs of a severe trauma treatment simulation program based on mixed reality which combines element of both virtual reality and augmented reality. Methods: Focus group interviews were conducted with ten military hospital nurses on February 4 and 5, 2021. The collected data were analyzed using a qualitative content analysis. As a framework for data analysis, the educational needs were clustered into the following four categories: teaching contents, teaching methods, teaching evaluation, and teaching environment. Results: The educational needs for each category that emerged were as follows: three subcategories including "realistic education reflecting actual clinical practice" and "motivating education" for teaching contents; five subcategories including "team-based education," "repeated education that acts as embodied learning," and "stepwise education" for teaching methods; six subcategories including "debriefing through video conferences," "team evaluation and evaluator in charge of the team," "combination of knowledge and practice evaluation" for teaching evaluation; six subcategories including "securing safety," "similar settings to real clinical environments," "securing of convenience and accessibility for learners," and "operating as continuing education" for teaching environment. Conclusion: The findings of this study can provide a guide for the development and operation of a severe trauma treatment simulation program based on mixed reality. Moreover, it suggests that research to identify the educational needs of various learners should be conducted.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.26 no.12
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• pp.1898-1907
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• 2022

Every year, many shipping companies provide seaman safety education programs periodically to reduce ocean-traffic accidents. However, undertaking the regular safety training for seaman has been difficult because of litimation of space and time. Recently, VR technolgy is received attentions to overcome previous problems. It can provide users educational interactions between a user and virtual environment and fulfill sustainable teaching. In this paper, VR-based safety education content for sailors has been developed, and it includes four programs. Also, survey was conducted with four questionnaires such as immersiveness, easy to experience, satisfaction of education contents, comparative evaluation between traditional education program and VR education contents. As the result, immersiveness questionnaire could be gain 53.83% positive assessment, and easy to experience could be gain 65.38% positive assessment, and satisfaction could be gain 69.23% positive assessment. Lastly, comparative evaluation between traditional education program and VR education contents could be gain about 46% positive and 34% neutral assessments.

• The Journal of the Convergence on Culture Technology
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• v.9 no.3
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• pp.49-56
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• 2023

This study is a qualitative study that explores the essential meaning of nursing through a simulation curriculum targeting nursing students. In this study, 18 students, who were 4th grade nursing students at a university in M city, Gyeongsangbuk-do, completed a simulation during the curriculum. Data collection was done through free-form reports and interviews to help students understand the part of nursing they thought through simulation classes. The collected data was analyzed using Krippendorff's phenomenological method. As a result of analyzing the meaning of nursing through simulation class, 3 categories, 10 topics, and 28 meaningful statements were derived. The three categories were derived as 'virtual nursing', 'thinking nursing', and 'together nursing'. As a result of this study, nursing students were seeking their own solution to solve nursing in unpredictable situations based on the philosophy of nursing through virtual simulation. It is expected that this will be used as basic data to develop various and in-depth simulation education programs in the future.

• Journal of the Korea Society of Computer and Information
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• v.26 no.10
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• pp.83-91
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• 2021

In this paper, presents an efficient education method for training specialized edutainment SW education instructors and drone realistic media creators, not just training to acquire certificates through drone manipulation training. To this end, the NCS-based curriculum was derived. The developed curriculum includes the edutainment drone curriculum and the realistic media creator curriculum. Among them, core responsibilities were defined for the drone control curriculum and core tasks, knowledge, and attitudes were described for each. After that, a detailed curriculum for drone control was derived. In the realistic media creator curriculum, pilot education was conducted to actually produce advertisement videos to foster experts who can work directly in the industrial field. Finally, through holding an online conference in a metaverse environment, a virtual conference was operated to share and discuss media videos produced by trainees. After the end of education, the efficiency of this curriculum was proved through education satisfaction analysis for 46 education graduates. This paper presented a method to achieve internalization of SW education in non-face-to-face online education that our society must solve after post-COVID-19. In addition, an efficient educational method in a realistic media environment was suggested by showing a realistic media creator training curriculum, pilot programs, and metaverse conference management cases.

• The Journal of the Korea institute of electronic communication sciences
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• v.9 no.7
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• pp.791-797
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• 2014

In order to create an environment for Apache Hadoop for parallel distributed processing system of Bigdata, by connecting a plurality of computers, or to configure the node, using the configuration of the virtual nodes on a single computer it is necessary to build a cloud fading environment. However, be constructed in practice for education in these systems, there are many constraints in terms of cost and complex system configuration. Therefore, it is possible to be used as training for educational institutions and beginners in the field of Bigdata processing, development of learning systems and inexpensive practical is urgent. Based on the Raspberry Pi board, training and analysis of Big data processing, such as Hadoop and NoSQL is now the design and implementation of a learning system of parallel distributed processing of possible Bigdata in this study. It is expected that Bigdata parallel distributed processing system that has been implemented, and be a useful system for beginners who want to start a Bigdata and education.