• 한국항공운항학회지
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• 제32권1호
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• pp.71-78
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• 2024

In this study, we reviewed access transportation, operating companies, and airport infrastructure to revitalize Cheongju International Airport. Regarding access transportation infrastructure, it is necessary to promote a railway network connecting the metropolitan inland line and the central inland region. In addition, active administrative support from local governments is required to ensure smooth progress in railway and highway infrastructure linkage projects, such as the Osong Connecting Line and Chungbuk Line, high-speed rail network promotion, and expansion of the Chungbuk Eastern Axis Expressway and Central Expressway. Regarding operator access infrastructure, continuous efforts are required to add and attract airlines based at Cheongju International Airport. Regarding airport infrastructure, the Cheongju International Airport runway needs complete resurfacing due to its deterioration. Domestic passenger capacity has exceeded 6.5%, and considering the increase in import and export of high value-added goods in the North Chungcheong region, it is necessary to build and expand passenger terminals and cargo terminals. Cheongju International Airport's runway does not have enough runway length to operate large and ultra-large aircraft, so if it is extended from the existing 2,744m to 456m to 3,200m, several benefits can be expected in terms of revitalizing Cheongju Airport, such as route expansion.

• Molecules and Cells
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• 제40권11호
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• pp.814-822
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• 2017

Meiotic homologous recombination generates new combinations of preexisting genetic variation and is a crucial process in plant breeding. Within the last decade, our understanding of plant meiotic recombination and genome diversity has advanced considerably. Innovation in DNA sequencing technology has led to the exploration of high-resolution genetic and epigenetic information in plant genomes, which has helped to accelerate plant breeding practices via high-throughput genotyping, and linkage and association mapping. In addition, great advances toward understanding the genetic and epigenetic control mechanisms of meiotic recombination have enabled the expansion of breeding programs and the unlocking of genetic diversity that can be used for crop improvement. This review highlights the recent literature on plant meiotic recombination and discusses the translation of this knowledge to the manipulation of meiotic recombination frequency and location with regards to crop plant breeding.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2004년도 춘계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.80-82
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• 2004

The single phase switched reluctance motor(SRM) is more simpler and robust in the structure than poly phase SRM. It has the merits that it reduces the switching elements and the energy density per volume is very high. Recently, it has been researched and developed in various types and starting method due to the technique of power electronics and the computer added design. This paper presents a analytical representation of the phase inductance of a single phase SRM, as function of position and current, taking into account the non-linearity of the magnetic circuit. the method is based on Fourier series expansion. Analytical expressions for the calculation of instantaneous phase inductance, flux linkage, coenergy and electromagnetic torque as a function of rotor position and winding currents are derived.

• 디자인학연구
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• 제15권1호
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• pp.153-161
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• 2002

There exist various conventional ideas, but few ideas may be used for actual production of advertisements. Moreover, because we tend to obtain ideas primarily from the pictures, we rely more and more on data collections, and eventually, we tend to copy them. If there is an idea which designers and copy writers can share, it will be a very effective idea. On the other hard, we need to depart from the individualistic mannerism or the reset-oriented approach depending on incidental manual works and instead, develop a lecture program which helps students e strike systematic ideas centering around processes. In order tn solve such problems, the researcher attempts to suggest "Spring Method" which has heed verified through the advertisement design practice courses at college for 7 semesters. This method focuses on ′visualization of concept′ through such stages as compression, inference and expansion, and therefore, emphasizes an organic linkage between language-oriented idea process and visualization process for advertisement ideas.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1998년도 하계학술대회 논문집 F
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• pp.1981-1983
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• 1998

The principle of the MHD generation is based on Faraday's law of induction that a eletromotive force(u ${\times}$ B) is generated when the working gas of velocity u flows a channel in which magnetic field of strength(B) exists. In MHD power generation system, enthalpy of the working gas is converted to electric power directly through expansion in generator channel. It means that electric power can be generated without moving mechanical linkage such as turbine blades. There are two types in the MHD generator; linear type Faraday and disk type hall generator. Disk type hall generator is the main target of this paper. Isentropic efficiency and enthalpy extraction rate of disk type shock tube driven hall generator is discussed here.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2004년도 하계학술대회 논문집 B
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• pp.1025-1027
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• 2004

Recently, the Single phase SRM has been researched and developed in many appliances with various types. This paper presents a theoretical representation of the phase inductance of a single phase SRM, as function of position and current, taking into account the non-linearity of the magnetic circuit. The method is based on the Fourier series expansion. the theoretical expressions for the calculation of instantaneous phase inductance, flux linkage, coenergy and electromagnetic torque as a function of rotor position and winding currents are derived. And it is compared with the results of the finite element analysis.

• 공학교육연구
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• 제22권4호
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• pp.71-77
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• 2019

Capstone design is a very important college course that enhances students' creativity and skills. However, in most universities, the operation of capstone design is operated by the experience and intuition of the advisor, and it is somewhat lacking in the generation of useful results such as patent rights and technology start-up from the capstone design result. In this study, we proposed a performance - based capstone design operation model through patent linkage so that the capstone design class can create creative and useful results. The proposed operating model includes support for research on prior art of patent information utilization, patent right of idea, and technology commercialization. The proposed operating model was directly applied to the capstone design class in the university, and it was confirmed that useful results such as expansion of the scope of the research achievement and technology start - up were created compared to the existing operation model.

• East Asian mathematical journal
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• 제39권2호
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• pp.167-181
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• 2023

The purpose of this study is to confirm the possibility of whether learning using a math learning platform can be used to expand students' conceptual structure and to consider how to use it. To this end, first-year middle school students studied using a math learning platform. Then, the concept map created was compared and analyzed with the concept map created before learning to examine the change in the concept structure. The results of analyzing the concept map are as follows. First, the change in the hierarchical structure of the concept appeared as the division of the upper concept was subdivided. However, it has also been changed to comprehensively integrate and simplify higher concepts. The term-centered concept structure has changed to content-centered superordinate and subordinate concepts. In the concept structure, subordinate concepts linked to one higher concept were expanded and differentiated. Second, changes in the integrated structure did not form a linkage structure. The expansion of the integrated structure of concepts through learning using the learning platform was influenced by the composition of the learning contents designed in the learning platform.

• 한국사회복지학
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• 제55권
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• pp.283-307
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• 2003

우리나라 노인들의 사회복지서비스 이용은 매우 저조하고 서비스가 각기 독립적으로 제공되고 있기 때문에 중복과 누락현상이 나타나고 있음이 지적되어 왔다. 본 연구는 경기도 국민기초생활보장대상 노인들 전수를 대상으로 노인들이 어떠한 서비스기관으로부터 어떠한 사회복지서비스를 받고 있는지에 대해 살펴보고, 노인들의 사회복지서비스 이용기관수에 영향을 미치는 요인이 무엇인지 알아보고자 하였다. 연구결과 서비스중복 문제보다는 낮은 서비스이용률이 더 문제인 것으로 드러났다. 노인의 사회복지서비스 이용에 영향을 미치는 요인을 알아본 결과 비교적 욕구요인이 큰 비중을 차지하였고 그 외 귀속요인과 자원요인도 중에는 큰 영향을 미치는 변수들이 나타나, 사회복지서비스확충과 지역별 균형의 달성, 서비스 연계 활성화가 필요한 것으로 밝혀졌다.

• 한국융합학회논문지
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• 제13권4호
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• pp.635-641
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• 2022

사회적경제조직은 그동안 다양한 유형과 분야에서 양적인 성장을 가져왔으나 주로 정부가 주도하는 형태로 추진되어왔고 아직 선진국과 비교해 볼 때 제도적 정비나 지원체계 및 지원방식 등 질적으로 개선해야 할 여지가 많다. 본 연구에서는 선행연구를 통해 나타난 사회적경제조직의 문제점, 사회적경제조직의 현황과 실태분석, 정책전달 체계, 사회적경제조직 발전의 장애요인, 활성화의 문제점 등을 검토하였다. 이를 통해 미래 사회적경제조직의 활성화를 위한 정책 방향과 추진과제를 제시하여 보았다. 그 결과 사회적경제조직의 활성화를 위한 정책방향은 민간·지자체 주도, 진출분야의 확대, 성장생태계 조성을 위한 맞춤형 지원, 다양한 연계협력이 필요하고 추진 과제로는 제도개선을 위한 법령제정 및 개정, 사회적경제조직의 역량개발과 교육, 다양한 연계협력체제 강화, 투자생태계 조성, 공동판로개척 등이 필요하다.