토픽모델링을 활용한 소프트웨어 분야 대학 교과과정 분석

최재원,이호,김정민,송주호,Choi, Jaewon,Lee, Ho,Kim, Jungmin,Song, Juho 한국전자거래학회 2017 한국전자거래학회지 Vol.22 No.4

소프트웨어 직무의 특성과 대학교의 SW 학과가 개발한 커리큘럼 간의 차이가 존재하는 현재에서, 실제로 SW 관련 교과과정 편성이 어떻게 구성되어 있는지, 그리고 현실적으로 SW 인력의 실무 요구사항과 부적합한 부분을 확인하는 것이 매우 중요한 시기이다. 해외 사례를 보면 이미 실무 요구사항 중심의 SW 교육을 바탕으로 SW 인력을 양성하려는 노력이 진행되어 오고 있다. 그 결과 실제 관련 실무 기업들의 채용에 대한 긍정적인 반응이 나타나고 있다. 국내에서도 정부 주도하에 이러한 시도가 시도되고 있으며 특히 SW 중심대학 사업을 바탕으로 관련 분야의 선도대학의 역할을 부여하고 있다. 그러나 SW 분야의 인력 공급 문제는 여전히 실무분야와 교육 분야의 이슈가 되고 있다. 교과과정 구성에 대한 실무 기업들의 관점의 환경적 요소가 확실히 반영되지 못하고 있다는 기존의 한계에 따라 본 연구에서는 교육 내용의 구성과 실무의 차이를 줄일 수 있는 방법을 진단하고자 하였다. 그에 따라 실제 활용중인 대학의 교과과정과 강의계획서 자료를 바탕으로 토픽모델링을 실시함으로서 교과과정과 강의계획서에 대한 키워드를 도출하였다. 분석 결과 분석에 활용된 관련 대학 학과의 실습 비율이 상대적으로 낮은 수준을 보였으며 교과목 중첩비율, 강의계획서 키워드 중첩비율도 일반 수준으로 보여짐에 따라서 체계적인 교과과정 확립과 실무 능력 배양을 위한 강의계획 수립이 중요하다는 것을 확인하였다. It is a very important time to check how SW curriculum is actually organized and what is inadequate to practical requirements of SW manpower in the present situation where there is a difference of viewpoints between software field and SW curriculum of university. In overseas cases, efforts have already been made to cultivate SW manpower based on SW training centered on practical requirements. As a result, there is a positive response to the recruitment of actual related companies. In Korea, these attempts have been attempted under government initiative. In particular, based on the SW-centered university project, it has given the role of a leading university in related fields. However, with regard to the labor supply problem in the SW sector, the requirements of the business enterprises still differ from the educational curriculum. In this study, we tried to diagnose the method that can reduce the difference between the composition and the practice of the contents according to the existing limit that the environment factor of the viewpoint of the working companies about the curriculum composition is not clearly reflected. As a result, the topic modeling based on the university's curriculum and lecture plan data is used to derive keywords for curriculum and lecture plan. Through the data analysis, this study confirmed that the practice rate of related university departments utilized in data analysis is relatively low. In addition, we found that it is important to establish a systematic curriculum and to build a lecture plan to cultivate practical skills, as the number of overlapping textbooks and the number of keyword overlapping are found.

비행운 저감 기술 동향

최재원,옥권우,손명진,김혜민,양계병,김지현,조하나,Choi, Jaewon,Ock, Gwonwoo,Son, Myeongjin,Kim, Hyemin,Yang, Gyebyeong,Kim, Jihyun,Cho, Hana 항공우주시스템공학회 2018 항공우주시스템공학회지 Vol.12 No.2

비행운은 항공기가 차가운 대기를 비행할 때 엔진 배기의 수증기가 응축하여 발생하는 구름을 말한다. 비행운은 지구 온난화의 원인중 하나로 지목되고 있으며 군사적으로는 항공기 스텔스 기술과 연관되어 있으므로, 이를 저감하기 위한 관련 연구가 진행되었다. 그러나 우리나라의 경우 관련 연구가 전혀 진행되지 않은 실정이므로, 연구 수행을 위한 기초자료로써 선진국의 비행운 저감 기술 사례를 집중적으로 분석할 필요가 있다. 본 논문에서는 선진국에서 수행되었던 비행운 저감 기술 동향을 카테고리 별로 파악하고, 제시된 각 기술들의 타당성과 실현 가능성을 분석하였다. 또한 관련 기술의 적용 및 상용화를 위한 방향을 제안하였다. Contrail is type of clouds which are formed by a condensation of water vapour from the aircraft exhaust when the aircraft is flying the cold atmosphere. Since contrails have considerable effect on greenhouse-effect and military stealth efficiency, researches about contrail avoidance technology has been conducted for decades. However, none of the previous researches concerning contrail avoidance was carried out in Korea. Thus, review of the previous study regarding contrail reduction is absolutely needed. In this paper, researches conducted by several countries are categorically introduced, and practicabilities of their methods are analyzed. This paper also suggests some practical and systematized way to conduct future researches about contrail avoidance.

회원작품 - 구산동도서관마을

최재원,Choi, Jaewon 대한건축사협회 2017 建築士 Vol.574 No.-

지상 무선 백본망과 위성 통신망 통합을 위한 동적 라우팅 연동 방안

최재원,조병각,김기영,박경열,이주형,한주희,한이수,Choi, Jaewon,Jo, Byung Gak,Kim, Ki Young,Park, KyoungYoul,Lee, Ju Hyung,Han, Joo Hee,Han, Yeesoo 한국군사과학기술학회 2016 한국군사과학기술학회지 Vol.19 No.5

The terrestrial wireless backbone network and satellite communications system have been independently developed depending on their own purposes and operational concepts, which results in different characteristics in terms of network architecture and routing protocol operation. In this paper, we propose a method for structurally integrating them in consideration of routing mechanism in an autonomous system. Our approach is that the routers of satellite network operate the OSPF in PTP mode on their interfaces connected to the routers of terrestrial wireless backbone network with grid connectivity, whereas the OSPF in satellite network whose topology is of hub-spoke type runs in NBMA mode. We perform some simulations to verify that the satellite communications system can be integrated and interwork with the terrestrial wireless backbone network by our proposed approach. From simulation results, it is also found that the increases of network convergence time and routing overhead are acceptable.

북한과 중국·베트남의 이동통신 정보통제 비교연구

최재원 ( JAEWON CHOI ) 평화문제연구소 2022 統一問題硏究 Vol.34 No.2

This study has a purpose to evaluate the information control policies of China and Vietnam, then to compare it with North Korea's information control policy and to explore the differences. Nowadays, mobile communication(smartphone) has a great influence on information delivery and life of humans, this research has been studied mobile information control from the perspective of maintaining the socialist system. First, as a result of comparing and evaluating the mobile communication policies of three countries, China can be defined as nationalism, Vietnam as openness, and North Korea as isolationism. Second, looking at the degree of institutionalization of information control in mobile communications, China and Vietnam have systemized laws. China places an emphasis on censorship and surveillance under the Network Security Act, Vietnam focuses on security and responsibility under the Cyber Security Act, and North Korea focuses on lockdown and punishment under the Computer Network Management Act and Criminal Act. Third, in terms of physical and technical information control, China is evaluated as a state of total control, Vietnam as a state of selective control, and North Korea as a state of physical lockdown. How can North Korea develop its mobile communications industry while keeping its regime stability? In addition, more scientific and empirical studies are needed on ways to apply the successful models of the mobile communication industry in socialist countries to North Korea.

시멘트 분말도가 광촉매 시멘트 페이스트의 질소산화물(NOx) 제거 성능에 미치는 영향

최재원(Choi, Jaewon),기태경(Ki, Tae-Kyoung),차완호(Cha, Wan-Ho),한민철(Han, Min-Cheol) 대한건축학회 2021 대한건축학회논문집 Vol.37 No.8

In this study, we researched a method to increase the photocatalytic reaction efficiency of TiO₂ particles while fixing TiO₂ to the concrete surface using cement paste. For this purpose, we analyzed effects of cement fineness on the surface area and air purification performance of hardened cement paste containing TiO₂. At the test level of this study, it was confirmed that the lower the fineness of OPC shows the better the NO and NOx removal rates, indicating better air purification performance. To identify the cause, the particle size distribution of the cement, the roughness of the surface of the hardened paste, and the lightness were analyzed. The results of the analysis show that the lower the fineness of cement, the surface roughness increases, so the exposed area of TiO₂ contained in the paste also increases. As a result, NOx removal rate is improved when the lower the fineness of cement.

제품 리뷰의 콘텐츠 특성이 구매 및 구전 확산에 미치는 영향

최재원(Jaewon Choi) 한국무역연구원 2020 무역연구 Vol.16 No.2

Purpose– The purpose of this study is determining the effectiveness of text, picture, and video word-of-mouth diffusion in the online environment. Also, this study examines the impact of antecedents of eWOM and media characteristics. Design/methodology/approach–This study conducted an experiment for three different media contents in Korea. Data was collected with experimental setting and survey items. Exploratory factor analysis (EFA), ANOVA and the Structural equation modeling (SEM) were employed in order to analyze the data. Findings–Results showed that eWOM, vividness, neutrality, and usefulness have a significant impact on purchase intention. Moreover, eWOM, vividness, neutrality, usefulness, and reliability have a significant impact on word of mouth intention. Lastly, we confirmed that the effect of the eWOM type of diffusion is different. The photo eWOM is more influential than the text eWOM, and the video eWOM is more influential than the photo eWOM. Research implications or Originality– Although previous studies used the survey method, this study developed three different group experiments. Practical implications include making it possible for firm managers to develop specific market strategies related to social media environment.

곤충모방형 날갯짓 비행체 자세 제어를 위한 장치 설계 및 실험

최재원(JaeWon Choi),공두현(Du Hyun Gong),신상준(Sangjoon Shin) 한국항공우주학회 2020 한국항공우주학회 학술발표회 논문집 Vol.2020 No.7

[발언과 논평] 우연히 좋은 공공건축

최재원(Choi, Jaewon) 대한건축학회 2023 建築 Vol.67 No.3

기술혁신이 기업의 총요소생산성에 미치는 효과 : 국내 제조기업 규모별 비교

최재원 ( Jaewon Choi ),오승환 ( Seunghwan Oh ),이정동 ( Jeong-dong Lee ) 한국생산성학회 2019 生産性論集 Vol.33 No.4

Total factor productivity means the productivity of factors that contribute to the production of an economy other than those described as a production component in the gross domestic product of a particular economy. This is mainly interpreted as a level of technological efficiency and technological progress and is also used to measure the level of innovation and technological progress at the enterprise level. In recent years, the lack of corporate financial data has improved, leading to a number of studies on the analysis of the total factor productivity of the enterprise unit. However, there have not been many analyses of the difference in total factor productivity by size of a company. In this study, we analyzed the components of growth rate of total factor productivity of manufacturing companies by size using firm financial data provided by Korean Enterprise Data. Stochastic Frontier Analysis(SFA) is employed as a methodology. The growth rate of total factor productivity was compared and analyzed by dividing manufacturing companies into conglomerates, middle market enterprises, small or medium enterprise business, small enterprises. The results of the analysis show that the total factor productivity growth rate was measured differently depending on the size of the entity. The growth rate of total factor productivity was the highest among middle market enterprises, followed by small or medium enterprise business, conglomerates and small enterprises. In terms of business dynamics, it shows that small and medium-sized companies, which are capable of creative challenges based on flexibility rather than rigid conglomerates or high-risk small business owners, will play an important role in boosting overall productivity and, by extension, developing the national economy. Looking at the total component productivity growth component, the technology progress rate was positive for all sizes of manufacturing companies, and the change in technology efficiency was negative except for medium-sized businesses. This can be said to be a deepening technology gap in Korean manufacturing companies.