• 대한기계학회논문집A
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• 제26권4호
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• pp.587-595
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• 2002

Recent trend changes a criterion for evaluation of humors that environmental problems are raised as a global issue. Burners with higher thermal efficiency and lower oxygen in the exhaust gas, evaluated better. To comply with environmental regulations, burners must satisfy the NO/sub x/ and CO regulation. Consequently, 'good burner'means one whose thermal efficiency is high under the constraint of NO/sub x/ and CO consistency. To make existing burner satisfy recent criterion, it is highly recommended to develop a feedback control scheme whose output is the consistency of NO/sub x/ and CO. This paper describes the development of a real time flame diagnosis technique that evaluate and diagnose the combustion states, such as consistency of components in exhaust gas, stability of flame in the quantitative sense. In this paper, it was proposed on the flame diagnosis technique of burner using Neuro-Fuzzy algorithm. This study focuses on the relation of the color of the flame and the state of combustion. Neuro-Fuzzy loaming algorithm is used in obtaining the fuzzy membership function and rules. Using the constructed inference algorithm, the amount of NO/sub x/ and CO of the combustion gas was successfully inferred.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제9권10호
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• pp.3789-3809
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• 2015

In this paper, we deal with the problem of M2M gateways' network selection for different types of M2M traffic in heterogeneous wireless networks. Based on the difference in traffic's quality of service (QoS) requirements, the M2M traffic produced by various applications is mainly classified as two categories: flexible traffic and rigid traffic. Then, game theory is adopted to solve the problem of network-channel selection with the coexistence of flexible and rigid traffic, named as flexible network access (FNA). We prove the formulated discrete game is a potential game. The existence and feasibility of the Nash equilibrium (NE) of the proposed game are also analyzed. Then, an iterative algorithm based on optimal reaction criterion and a distributed algorithm with limited feedback based on learning automata are presented to obtain the NE of the proposed game. In simulations, the proposed iterative algorithm can achieve a near optimal sum utility of whole network with low complexity compared to the exhaustive search. In addition, the simulation results show that our proposed algorithms outperform existing methods in terms of sum utility and load balance.

• International Journal of Advanced Culture Technology
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• 제9권3호
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• pp.16-22
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• 2021

This study was phenomenological analysis of maternal nursing of online practice experience. The study participants were students in between the ages of 20 to 25 who participated in the online practice of maternal nursing and conducted to a total of three interviews until the meaning were no longer derived. The data collection period was from May 26 to June 5, 2021, and analysis was conducted simultaneously with the datas have collected. The collected data were analyzed using the Giorgi's Phenomenological Analysis Method, and the study resulted in five categories (Opportunity to repeat, Systematic Scenarios, Immediate nursing intervention feedback, Beneficial hands-on experience, Different case experiences), 11 subcomponents, and 21 Semantic units. Based on the results of this study, the following conclusions were obtained. In maternal nursing, nursing students could experience more systematic and diverse case online than experiences throughout clinical practice, and achievement was also increased in theory learning for online practice. In other words, the online practice of maternal nursing was suitable for various content compositions that could not be experienced in clinical practice, but it is deemed urgent to have a program in Korean suitable for Korean culture. In future studies, this researcher hope to produce a maternal nursing practice program in Korean.

• 통합자연과학논문집
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• 제12권2호
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• pp.58-68
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• 2019

Critical thinking is essential to implementing the nursing process requiring timely decision making. The study examined the effects of a critical thinking course for nurses in the RN-BSN program. The study used a pre- and post-test design with a control group. The experimental group was a convenience sample of 24 working nurses attending a health college. The control group was 24 fellow nurses. The nursing process-based critical thinking course was provided to the experimental group two and half hours a week for 8 weeks. Teaching methods included lectures followed by a summary and quiz, brainstorming and action learning, and lecturer feedback. A pamphlet about views of professional occupation was provided to the control group. The data were collected using self-report questionnaires and analyzed to examine differences in the test scores before and after the intervention. The scores of critical thinking disposition, problem-solving process, and clinical competence increased significantly in the experimental group but did not in the control group. The difference between the two groups was also statistically significant in critical thinking disposition, problem-solving process, and clinical competence. It is necessary that a robust educational program or training to enhance critical thinking ability of nurses are provided in clinical settings and that nurses keep going on thinking critically in their practice.

• 공학교육연구
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• 제22권1호
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• pp.39-47
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• 2019

This study aims to suggest a model and instructional strategies for a flipped classroom using First Principles of Instruction in engineering education in order to organize teaching and learning activities in a flipped classroom. For this purpose, the authors analyzed the literature on the flipped classroom in engineering education and on applying First Principles of Instruction in designing flipped classroom. Then, a framework of flipped classroom employing First Principles of Instruction and instructional strategies were suggested. Two experts examined the validity of the model and of the instructional strategies, and the final version was completed reflecting on those feedback. Since engineering education aims to teach procedural knowledge as well as conceptual knowledge, different instructional strategies upon two types of knowledge were presented. The implication of our work is to illustrate the model and tactics for flipped classroom based on the Merrill's deeply rooted pedagogical approach. This study may contribute to practice in engineering education.

• 한국융합학회논문지
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• 제9권11호
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• pp.83-90
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• 2018

최근 많은 사람들이 불면증으로 인한 노동력저하, 인지기능저하, 정신질환 증가 등의 불편을 겪고 있다. 이에 대한 해결책은 인지치료나 약물치료가 거의 전부인 수준이나 부작용과 의존성 문제로 인해 장기적으로는 권장되지 않는 방법이다. 따라서 본 논문에서는 수면 유도에 도움이 되는 포터블 뇌파 측정기 기반 뉴로피드백 시스템을 제안한다. 그리고 시스템을 구현하는 데 가장 핵심적인 기능인 뇌파 상태 분류기를 설계하고 평가하며 성능에 영향을 미칠 수 있는 여러 요인들에 대해 최적화된 분류기 모델링 방법을 제시한다. 제안한 분류기를 이용할 시 포터블 뇌파 측정기에서 각성과 수면 단계를 97.9% 정확하게 구분할 수 있었다.

• PNF and Movement
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• 제9권2호
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• pp.9-19
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• 2011

Purpose : To provide the understanding of abdominal hollowing exercise, this study reviewed literatures related with TrA and AHE. Methods : We reviewed the prior studies related with TrA and AHE. Results : Crook lying is easier to facilitate isolated contraction of TrA from EO than the others. The contraction of the TrA is shown to be the highest muscle activity in prone lying. Additionally, wall support standing(or standing) is shown a higher contraction of entire abdominal muscle than the others. However, learning and teaching correct AHE have innate difficulties in four positions. Conclusion : We have to consider that Rehabilitative Ultrasonic Imaging(RUSI) can facilitate accurate AHE. In the country, physical therapists will be necessary more training and efforts to use ultrasound because very few use ultrasound in clinical field. It will be necessary to study the effects of RUSI feedback and examine effects of exercises in combination with AHE.

• 한국멀티미디어학회논문지
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• 제24권1호
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• pp.125-133
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• 2021

Due to Covid-19, the un-contact culture has affected society as a whole, and the methods of education conducted offline has been greatly affected. In the private education of preparing for university entrance, the public official examinations and certification acquisition, the method of online education has been shown to have positive effects. While private class and school class which have offered in off-line to cope with rapid changes caused various problems such as decline in quality for education. Due to the characteristic of design class, practical training is important. As interactive feedback between students and educators is more important than one-way of delivering knowledge while class is conducted in online, educators have a challenge when they prepare for class. This study handles the methods of online education for the purpose of practical education methods in university nowadays, Especially, the non-face-to-face education methods for game animation production. Based on this study, I propose an effective educational method with non-face-to-face class that allows students to be satisfied and increases their knowledge, beyond face-to-face class.

• 반도체디스플레이기술학회지
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• 제21권2호
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• pp.117-122
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• 2022

This paper proposes a method for evaluating the work of manufacturing workers using MediaPipe as a risk factor for musculoskeletal diseases. Recently, musculoskeletal disorders (MSDs) caused by repeated working attitudes in industrial sites have emerged as one of the biggest problems in the industrial health field while increasing public interest. The Korea Occupational Safety and Health Agency presents tools such as NIOSH Lifting Equations (NIOSH), OWAS (Ovako Working-posture Analysis System), Rapid Upper Limb Assessment (RULA), and Rapid Entertainment Assessment (REBA) as ways to quantitatively calculate the risk of musculoskeletal diseases that can occur due to workers' repeated working attitudes. To compensate for these shortcomings, the system proposed in this study obtains the position of the joint by estimating the posture of the worker using the posture estimation learning model of MediaPipe. The position of the joint is calculated using inverse kinetics to obtain an angle and substitute it into the REBA equation to calculate the load level of the working posture. The calculated result was compared to the expert's image-based REBA evaluation result, and if there was a result with a large error, feedback was conducted with the expert again.

• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.661-668
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• 2022

Various lean design and construction methods such as target value design, pull planning, value stream mapping have successfully transformed the commercial building construction industry into achieving improved productivity, higher design and construction quality, and meeting the target values of construction projects. Considering the significant advantages of lean, the accelerated dissemination and adoption of lean methods and tools for construction is highly desirable. Currently, the lean design and construction body of knowledge is imparted primarily through publications and conferences. However, one of the most effective ways to impart this soft knowledge is through getting students and trainees involved in hands-on participatory games, which can quickly help them truly understand the concept and apply it to real-world problems. The COVID-19 Pandemic has raised an urgent need of developing virtual games that can be played simultaneously from various locations over the Internet, but these virtual games should be as effective as in-person games. This research develops an online 3D simulation game for Target Value Design that is as effective as in-person games or possibly better in terms of knowledge capture and retention and enjoyable environment and experience. The virtual game is tested on volunteers using feedback from pre-and post- simulation surveys to evaluate its efficacy.