• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.13 no.3
• /
• pp.1178-1185
• /
• 2012

The 4th year medical students were randomly divided and designated as group HF and LF, representing high and low fidelity simulations respectfully. Both groups performed OSCE on 2 topics(adult intubation and IV cannulation) with each composed of the same scenario. Each scenario was developed by a faculty in charge of clinical skill education with supervision from 2 other faculty members. High fidelity simulations were designed as in-situ simulations in real OR. Low fidelity simulations had the same scenarios but the environment was simulated only with a simple task trainer in the classroom. All students participated in series of survey using a Likert scale before and after the simulations. The provided data was anlayzed with paired T-test and Mann-Whiteney test(p<0.05). The post simulations self evaluation score for group HF was lower than pre-simulation self confidence score for both topics of adult intubation and IV cannulation where as for group LF, it was lower only for adult intubation(p<0.05). In group HF, the needs for clinical training on both topics increased after the simulation. In group LF, there was no significant change of needs for clinical training between pre and post simulation survey. This suggest that fidelity may be a helpful factor to improve the motivation of the students and further study on economical aspect should be addressed.

• Journal of the Korea Institute of Military Science and Technology
• /
• v.26 no.2
• /
• pp.149-158
• /
• 2023

To predict the aerodynamic characteristics of the grid fins from subsonic to supersonic speeds, low fidelity SW as well as CFD SW were applied. VLM(Vortex Lattice Method) and SE(Shock-Expansion) method were used at subsonic and supersonic speed domain respectively for the rapid prediction of low fidelity SW. For 2 configurations of the grid fins, the CFD computations and tests using the trisonic wind tunnel were also performed to compare the results of the grid fins. The results of low fidelity SW, CFD SW and the wind tunnel tests data were agreed well each other. Through further research on the grid fins, the effective parameters of the grid fin configurations according to the speed regime will be investigated.

• Journal of the Korea Institute of Military Science and Technology
• /
• v.25 no.1
• /
• pp.45-54
• /
• 2022

There has been necessity to supplement the fin database to improve the accuracy of low-fidelity aerodynamic solver for missile configuration. In this study, fin database is expanded by in-house solver, utilized in the triservice data the previously established into regions beyond means of CFD. Fin alone data of CFD analysis results in the original region is matched well with triservice data originated from the wind tunnel tests. Extensive fin aerodynamic data from CFD analysis is added to the existing database of the low-fidelity solver. For confirmation, aerodynamic characteristics of body-tail and body-canard-tail missile configurations is computed using upgraded low-fidelity solver at transonic region. The result using improved solver shows good agreements with wind tunnel test and CFD analysis results, which implies that it becomes more accurate.

• 산업보건소식
• /
• no.42
• /
• pp.36-43
• /
• 1987

이 번역을 함에 있어 연중독 문제가 고전적으로 산업의학자들의 큰 관심사의 하나였으며 최근에는 우리 나라에서 아직도 상상을 초월하는 연오염작업장들에서 중독환자들이 발생하고 있는 실정인것으로 안다. 지난 9월 이 원문을 입수한지 6개월이 지난 요즘 우리 대한산업보건협회가 새로운 도약을 위한 근로자 건강 진단에서 보다 충실한 작업환경 조사와 유해작업장 근로자의 특수건강진단에 도움이 되기를 바라며, 완전하지 않은 번역을 하게 됨을 미안하게 생각합니다. 회원 여러분의 참고 있으시기를 바라며 오역, 기타 잘못된 점들이 있으면 알려주시기 바라면서 저농도의 연폭로시 발생할 수 있는 생체반응들에 대하여 우리 나라 여러 선후배 선생님들의 일고의 도움이 되기를 바랍니다.

• 산업보건소식
• /
• no.43
• /
• pp.49-54
• /
• 1987

이 번역을 함에 있어 연중독 문제가 고전적으로 산업의학자들의 큰 관심사의 하나였으며 최근에는 우리 나라에서 아직도 상상을 초월하는 연오염작업장들에서 중독환자들이 발생하고 있는 실정인것으로 안다. 지난 9월 이 원문을 입수한지 6개월이 지난 요즘 우리 대한산업보건협회가 새로운 도약을 위한 근로자 건강 진단에서 보다 충실한 작업환경 조사와 유해작업장 근로자의 특수건강진단에 도움이 되기를 바라며, 완전하지 않은 번역을 하게 됨을 미안하게 생각합니다. 회원 여러분의 참고 있으시기를 바라며 오역, 기타 잘못된 점들이 있으면 알려주시기 바라면서 저농도의 연폭로시 발생할 수 있는 생체반응들에 대하여 우리 나라 여러 선후배 선생님들의 일고의 도움이 되기를 바랍니다.

• Journal of the Korean Society for Aeronautical & Space Sciences
• /
• v.49 no.10
• /
• pp.859-870
• /
• 2021

KARI (Korea Aerospace Research Institute) is developing a design framework for the concept and preliminary design of eVTOL aircrafts. A low fidelity mission analysis tool was developed for the eVTOL aircrafts of Lift-Tilt Concept, which have tilt propellers and lift propellers, using open source SUAVE package. For its development, a review for the propeller performance analysis functionality was made. To find the trim solution at each mission segment automatically, an algorithm is implemented, using a global optimization technique through parallel processings and DOE(design of experiment). Using the tool, the one seated eVTOL OPPAV(optionally piloted personal air vehicle) was modeled and evaluated, which results were compared with the preliminary design data.

• The Journal of Korean Academic Society of Nursing Education
• /
• v.25 no.3
• /
• pp.331-343
• /
• 2019

Purpose: This study focuses on investigating the effectiveness of simulation education on emergency management using a low-fidelity simulator as related to clinical skill performance, self-confidence, knowledge, learning satisfaction, and critical thinking disposition in new nurses. Methods: A pre-post test experimental design of nonequivalent control group was applied. Fifty-five new nurses were recruited, 28 nurses for the experimental group and 27 nurses for the control group. A simulation education for emergency management comprising knowledge lecture, team learning, skill education, team simulation, and debriefing was developed and implemented from Feb. 14 to 27, 2015. Data were analyzed with percentage, average, and standard deviation, chi-square, and t-test using SPSS. Results: The experimental group showed significantly higher knowledge (t=5.81, p<.001), clinical skill performance (t=10.08, p<.001), self-confidence (t=-6.24, p<.001), critical thinking disposition (t=2.42, p=.019), and learning satisfaction (t=4.21, p<.001) for emergency management compared with the control group who had traditional lecture education. Conclusion: The results indicate that a simulation education using a low-fidelity simulator is an efficient teaching method for new nurses to deepen their clinical skill performance, self-confidence, knowledge, learning satisfaction, and critical thinking disposition in learning emergency management.

• Journal of the Institute of Electronics Engineers of Korea SP
• /
• v.41 no.4
• /
• pp.131-139
• /
• 2004

This paper proposes a variable-Q digital graphic equalizer with the opposite filters. A method for designing the proposed equalizer is also presented. In the proposed variable-Q equalizer, we adjust the Q-factor of the equalizer filter depending on the gain, yielding an improved equalizer performance. Also, by increasing the Q-factor of the opposite filters gracefully as the gain becomes greater, the inter-band interference can be removed effectively. We shall show that the frequency response of the proposed equalizer can reproduce the user's gain setting faithfully.

• Digital Contents
• /
• no.3 s.154
• /
• pp.99-105
• /
• 2006

MMORPG 대작들의 경쟁이 본격화 됐다. 온라인 게임시장의 빅3라 불리는 썬, 그라나도에스파다, 제라가 오픈베타테스트를 시작했거나 준비하고 있기 때문이다. 이런 경쟁속에서 참신함과 게임본연의 목적에 충실한 온라인게임 하나가 유저들에게 좋은 반응을 얻고 있다. 그 이름은 루니아 전기. 지난 2005년 국내 온라인 게임의 흐름이 MMORPG와 캐주얼 게임을 즐기는 헤비유저와 라이트유저로 구분됐지만, 루니아전기는 미들코어유저를 공략하고 있다. 즉 MMORPG의 중독성과 캐주얼 게임이 가진 대중성과 쉬운 조작성을 동시에 표방했다는 의미다. 그럼 1월24일 오픈베타테스트를 시작한 이후 참신한 매력으로 유저들에게 다가서고 있는 루니아전기에 대해서 살펴보도록하자.

• Journal of Yeungnam Medical Science
• /
• v.24 no.1
• /
• pp.85-90
• /
• 2007

According to the World Health Organization (WHO) classification system, cases with t(8;21)(q22;q22) should be diagnosed as acute myeloid leukemia (AML) even with a blast count of less than 20 percent in blood or bone marrow. It is an uncommon manifestation, moreover hypocellularity is rarely observed in this subtype of leukemia. Here, we report a case of t(8;21) in a patient with marked hypocellularity of less than 5 percent and a blast count of less than 20 percent. This patient responded relatively well to chemotherapy. An allogeneic bone marrow transplantation was performed with good engraftment. This case suggests that hypocellular AML with a t(8;21) has as good a prognosis as hypercellular AML with t(8;21).