• Journal of Advanced Navigation Technology
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• v.28 no.1
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• pp.116-122
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• 2024

In this paper, course structure and course width were studied among the main performances of the system to derive the required performance of the modulation index, output power, and phase change specifications of the instrument landing system (ILS) localizer power amplifier. To satisfy the course structure's deviation standard (± 5 uA), the difference in depth of modulation (DDM) deviation standard of the carrier with sideband (CSB) amplifier was standardized to ± 1 uA(0.001 DDM). CSB 30 W power amplifier was designed, and through the modulation compensation circuit, sum in depth of modulation (SDM) is 40% ± 0.1% and DDM is ± 0.0005 DDM in the operating output range(45 dBm ~ 35 dBm). In addition, the course width and displacement sensitivity specifications were analyzed through simulation, and the ± 0.1° change applied during comissioning inspection, which is the most stringent standard, was applied. The output variation of the suppressed with sideband only ( SBO) amplifier was ± 2 mW or less, The phase was standardized to within ± 3 ° and the characteristics were satisfied. By applying a compensation circuit according to output power and temperature, stable modulation index, output, and phase characteristics were obtained.

• Journal of Trauma and Injury
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• v.33 no.4
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• pp.219-226
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• 2020

Purpose: Although the Advanced Trauma Life Support (ATLS) course is now taught internationally, it has not been implemented in Korea. In recent years, interest has increased in simulation as a teaching tool in the ATLS course. We therefore hypothesized that simulation training would be a useful adjunct to the ATLS course. Methods: We designed a 1-day curriculum that included skill development workstations, expert lectures, trauma patient simulations, and group discussion for general surgery residents. We conducted a survey to evaluate participants' level of understanding of the initial evaluation and treatment of trauma patients, their degree of knowledge and technical improvement, their satisfaction with the learning goals, and their overall satisfaction with the curriculum. We then analyzed the effects before and after the training. Results: Nine residents attended this course. None of the residents initially reported that they could perform a primary survey of trauma patients. The analysis revealed significant improvements after training in the questionnaire areas of "assembly of the team and preparation for resuscitation of a trauma patient" (p=0.008), "performance of a primary survey for trauma patients" (p=0.007), "resuscitative procedures for trauma patients" (p=0.008), "importance of re-evaluation" (p=0.007), "identifying the pitfalls associated with the initial assessment and management" (p=0.007), and "importance of teamwork" (p=0.007). Conclusions: After the ATLS simulation training, all participants showed significant improvements in their understanding of how to manage multiple trauma patients. Therefore, ATLS simulation training for residents will help in the management of trauma patients.

• Journal of The Korean Association For Science Education
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• v.36 no.3
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• pp.399-411
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• 2016

The purpose of this study is to investigate implications for future STEAM education by analyzing the surveys by the in-service teachers who participated in the Advanced STEAM Teacher Training Program(ASTTP) for raising interests and understanding of science and technology and nurturing STEAM literacy and problem-solving ability of students. ASTTP was developed for promoting 'teacher competence for STEAM.' ASTTP is a 60-hour program(4 credits), which includes offline intensive course of 38 hours, online training course of 12 hours, a course of implementation at schools for 5 hours, and a workshop for 5 hours (based on the 2014 program). For the offline intensive course, teachers take various professional development classes and activities, such as open-laboratory tours, advanced experiments, mentoring programs, and team projects as well as lectures on diverse disciplines. For the online course, teachers take online classes freely while they are encouraged to work with other teachers in groups. After taking both online and offline courses, the teachers are required to implement their STEAM lesson plans in their classrooms. Finally at the workshop, some selected teachers share how successfully they have implemented STEAM education. About 700 teachers have successfully taken the program from 2012 to 2014. Based on the surveys by the teachers, the program has been modified and improved. Our analysis shows increased professional development in STEAM education for the participating teachers. This study can provide some implication and helpful insights for people who need to develop and manage teacher training programs for STEAM education and other education programs in general.

• Radiation Oncology Journal
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• v.32 no.2
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• pp.99-102
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• 2014

We present a case of unresectable cancer of the base of tongue treated with hypofractionated 3D conformal radiotherapy and concomitant chemotherapy. Based on the excellent tumour response in this radiotherapy regimen and international experience in short course treatments we shortly reviewed, we propose that this therapeutic approach could be considered in a curative setting for patients unsuitable for the a standard long course radiochemotherapy schedule.

• Proceedings of the Korea Information Processing Society Conference
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• 2000.10b
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• pp.1227-1230
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• 2000

본 연구는 서로 다른 형식(format)으로 작성된 무선인터넷 문서들간의 상호 변환(reformatting)을 다루고 있다. 무선인터넷에 접속하는 단말기는 보통 하나의 형식만을 지원하는데 비해서, 무선인터넷 문서를 작성하는데 필요한 마크업 언어(markup language)로는 WML, HDML, mHTML 등 다양한 형식들이 존재하고 있다. 이에 본 연구에서 지식 기반 시스템(knowledge based system)과 XML(extensible Markup Language)을 이용하는 문서 형식 변환 기술을 제공하여, 무선인터넷 컨텐츠 구축시 특정 형식에 구애받지 않도록 하였다.

• Cartoon and Animation Studies
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• s.19
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• pp.183-197
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• 2010

In order to develop education centered animation course, this study aims to research curricular that are equipped with industrial specialty based on the basic of visual arts. The subjects of the study were the international and domestic universities that have education goals of practical education, art education, and combined-typed education. The research was done by classifying curricular from basic course to advanced course. Production stage was divided into planning-production-follow up stage. The idea area was divided into three parts form basic emotion training to creativity development. This paper is focused on presenting to configure the basic features of the educational center for 4-year curriculum based on the course content and curriculum of international and domestic universities. The study of training course required for the configuration of the course of study focused on subjects which match the characteristics of major curriculum based on common subjects, major required courses, major electives were classified as the opening. As a result, It is difficult to lead common of educational contents because of the study of education-oriented curriculum and interdisciplinary educational goals of each university are different from other individual characteristics

• Proceedings of the KSR Conference
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• 2003.10b
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• pp.229-234
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• 2003

In this paper, the elemental components and improving purpose in advanced safety management system are reviewed to cope with a railway fire accident. And a considering procedure(V-cycle) of long-term plan for railway fire safety improvement is proposed. For the purpose of preventing recurrence of accident, items which have to be considered in the course of accident investigation and cause analysis are presented according to the stage of investigation activity.

• Archives of Pharmacal Research
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• v.12 no.3
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• pp.231-232
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• 1989

Although it has been known that organometallic $\beta$-lactam compounds improve the resistance to $\beta$-lactamases as well as their pharmacological activities, only a few results on organometallic $\beta$-lactam antibiotics were reported. In the course of our extensive study on the development of new cephalosporins, we were interested in organotin compounds since they show some biological activities.

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2019.05a
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• pp.169-170
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• 2019

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2019.05a
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• pp.165-166
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• 2019