• Proceedings of the Korea Society for Simulation Conference
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• 2005.05a
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• pp.21-28
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• 2005

최근의 제 2 세대 P2P 시스템은 확장성 있고 장애에 강한 분산 해쉬 테이블을 이용하여 대규모 P2P 애플리케이션을 위한 셀프-오거나이징 (Selforganizing)기술을 제공한다. 하지만 기존의 Pastry의 경우 해쉬 기반 기법을 적용하였기 때문에 사용자들의 요청이 빈번한 콘텐츠의 경우 한 노드로 네트워크의 전송 부하가 집중되는 현상이 발생할 수 있어 CDN 시스템에 적합하지 않았다. 본 논문에서는 이러한 문제점을 해결하기 위하여 CDN(Content Delivery Network) 환경에 적합하게 확장한 Rosary 오버레이 네트워크를 제안한다. 본 논문에서 제안하는 Rosary는 Pastry를 Inter-Pastry와 Intra-Pastry로 나누어 CDN 환경에 맞게 확장하였고 애플리케이션-레벨 멀티캐스팅(Applicatio-Level Multicasting)을 가능하도록 했으며 세미 해쉬 스킴(Semi Hash Scheme)을 적용함으로서 CDN 환경에 맞게 수정 하고 확장하였다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.10
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• pp.6807-6815
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• 2015

The aim of this study was to verify the effects of simulation-based high-risk neonatal care education on learning satisfaction, class participation, learning motivation and clinical competency of Nursing Students. The participants were 118 nursing students in year 3 in D college. The questionaire survey on learning satisfaction, class participation, learning motivation and clinical competency were conducted before and after education to the nursing students. The data was analysed by the SPSS WIN 17.0 program. The results showed that the scores of learning satisfaction, class participation, learning motivation and clinical competency were significantly higher than before education. Also, clinical competency have significant relationships with learning satisfaction, class participation and learning motivation.

• The Journal of the Korea Contents Association
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• v.14 no.3
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• pp.314-327
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• 2014

This is a quasi-experimental study involving one group design with pretest and posttest for evaluation of an effectiveness of an emergent care management simulation education among senior nursing students according to their learning styles. Participants were 58 senior nursing students. Learning style and educational effectiveness (critical thinking disposition, problem solving process, cooperation, satisfaction with learning, and self-confidence) were measured. Learning styles of senior nursing students were converger 46.6%, assimilator 34.5%, accommodator 15.5%, and diverger 3.4%. Critical thinking disposition, problem solving process, cooperation, and self-confidence were significantly enhanced by an emergent care management simulation education. Otherwise, educational effectiveness according to learning styles were not significantly different. Based on the results, devising stratagem to maximize an educational effectiveness will be needed trough re-evaluation of relationship between learning styles and effectiveness of a simulation education.

• The Journal of the Convergence on Culture Technology
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• v.8 no.4
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• pp.67-74
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• 2022

The purpose of this study was to develop and apply a mental simulation practice program using standardized patients for nursing students and to verify the effectiveness. This study is a single-group pre- and post-design study, and a structured questionnaire was provided to 186 nursing students at a university in J for data collection. The collected data were analyzed using SPSS/WIN 27.0 program. As a result of the study, the mental simulation practice education program using standardized patients showed the subjects' communication ability (t=-2.575, p=001), learner self-efficacy (t=-2.228, p=.026) and problem-solving ability (t=-2.298, p=.017) was found to be effective. As a result of this study, it is necessary to develop and apply a simulation practice education program that creates an environment similar to the actual situation and applies various cases using the necessary resources to improve the field adaptation ability of nursing students.

• Journal of The Korean Association For Science Education
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• v.34 no.3
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• pp.247-260
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• 2014

Purpose of this study is to analyze the roles and strategies of imagistic simulation observed in mental simulation about problematic situation of prediction, and thereby identify the process of generating prediction, explanation and sophistication. For this study, a framework for mental simulation process and strategy based on literary research was developed and content was validated from four experts of science education. This study was participated by 10 preliminary elementary school teachers, and a total of 20 cases were gathered for two thought experiment tasks based on the think-aloud method. The results were as follows: First, mental simulation process described based on the seven elements of 'perception,' 'interpretation,' 'statement of initial representation,' 'running imagistic simulation,' 'identifying result of simulation,' 'identifying alignment' and 'restatement structured representation.' The study confirmed that initial representation by interpreting related concepts and running imagistic simulation a number of times to develop explanation and prediction. Second, the study identified the use of strategies to enhance simulation such as 'zoom in,' 'partition,' 'dimensional enhancement,' 'dimensional reduction,' 'remove,' 'replace' and 'extreme case.' Running spatial transformation that uses strategy to enhance simulation contributed to discovering mechanism elements in problematic situations.

• Journal of the Korea Society for Simulation
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• v.24 no.1
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• pp.17-24
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• 2015

Smart grid is a modernized electrical grid that uses information and communication technologies to gather and act on information, such as information about the behaviors of suppliers and consumers, in an automated fashion to improve the efficiency, reliability, economics, and sustainability of the production and distribution of electricity. However, with the advent of cyber crime, there are also concerns on the security of the infrastructure, primarily that involving communications technologies. In this work, we make an in-depth investigation on the issue of security services and network loads on Smart grid. Through simulation, we analyze the relations between security services and network loads. The experimental results of this study will contribute toward designing an advanced Smart grid system that offers better quality of services. Also, the approach proposed in this study can be utilized to derive new and valuable insights in security aspects.

• Journal of Convergence for Information Technology
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• v.12 no.5
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• pp.40-50
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• 2022

This study is a qualitative study in which nursing students analyzed the contents of nursing skills recorded on a structured video observation record sheet while observing a colleague team's real-time video of chronic obstructive pulmonary disease scenario implementation during simulation practice. As a result of the analysis using the content analysis method, categories and topics of effective and ineffective aspects were derived in the areas of observation record: accuracy of procedures, adherence to aseptic technique, consideration of safety and safety, explanation and education, and purpose explanation and method education. This study is meaningful in that it presents factors that can increase the efficiency of nursing education through simulation-based practice.

• Journal of Internet Computing and Services
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• v.13 no.2
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• pp.99-108
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• 2012

Many methods had been developed to improve the accuracy of extracting information from a vast amount of data. This paper combined a number of natural language processing methods such as NER (named entity recognition), sentence extraction, and part of speech tagging to carry out text analysis. The data source is comprised of texts obtained from the web using a domain-specific data extraction agent. A framework for the extraction of information from unstructured data was developed using the aforementioned natural language processing methods. We simulated the performance of our work in the extraction and analysis of texts for the detection of organizational structures. Simulation shows that our study outperformed other NER classifiers such as MUC and CoNLL on information extraction.

• Journal of Digital Convergence
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• v.10 no.5
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• pp.267-273
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• 2012

The semantic relationship structures hierarchically the huge amount of document objects which is usually not formatted. However, it is very difficult to structure relevant data from various distributed application domains. This paper proposed a new object management method to service the distributed domain objects by using semantic reference relationship. The proposed mechanism utilized the profile structure in order to extract the semantic similarity from application domain objects and utilized the joint matrix to decide the semantic relationship of the extracted objects. This paper performed the simulation to show the performance of the proposed method, and simulation results show that the proposed method has better retrieval performance than the existing text mining method and information extraction method.

• The Journal of Korean Academic Society of Nursing Education
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• v.21 no.4
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• pp.445-454
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• 2015

Purpose: The purpose of this study was to identify the effects of structured self-debriefing using 3S models on the clinical competency, self-efficacy, and educational satisfaction in nursing students after simulation. Methods: For this study, 76 third-year undergraduate nursing students from S university were invited. They were divided into two groups, which consisted of a self-debriefing (SDG=41) group and an instructor-led debriefing group (ILDG=35). Collected data was analyzed using Chi-square, t-test, and an independent t-test with the PASW statistics 18.0 for Windows Program. Results: Clinical competency was generally high in the SDG, and statistically significant differences between the SDG and the ILDG occurred after simulations 3, 4, and 5. There were no statistically significant differences in self-efficacy and educational satisfaction between the SDG and the ILDG. However, educational satisfaction in the SDG was slightly higher, while self-efficacy was low compared to the ILDG. Conclusion: The results indicate that the method of structured self-debriefing using a 3S model can be effective in improving clinical competency. Further studies need to be investigated.