부채널 분석을 이용한 DNN 기반 MNIST 분류기 가중치 복구 공격 및 대응책 구현

이영주(Youngju Lee),이승열(Seungyeol Lee),하재철(Jeacheol Ha) 한국정보보호학회 2023 정보보호학회논문지 Vol.33 No.6

스마트기기 사용 관련 역기능 진단도구 타당화 연구

이영주(Lee, Youngju),권동택(Kwon Dongtaik),유형근(Yu, HyungKeun),장진희(Jang, Jinhee) 학습자중심교과교육학회 2014 학습자중심교과교육연구 Vol.14 No.9

This study is to develop and validate a diagnostic scale for elementary and middle school students measuring adverse effects of their using mobile devices. Based on our literature review, we developed preliminary items composed of three categories: mobile device addiction, online deviation, and cyberbullying. The preliminary scale was distributed to a total number of 2370 students at the 20 elementary schools and 9 middle schools for the validation of the scale. As a result of the confirmatory factor analysis, we extrated 5 factors for the elementary school version and 9 factors for the middle school scale. We believe this diagnostic scale will be used as a comprehensive instrument to assess problems occurred from students’ use of mobile devices and contribute to practical use in the field. 본 연구는 초중등학생의 스마트기기 사용 관련 역기능을 진단 할 수 있는 검사지를 개발하고 타당화하였다. 스마트 기기 사용에 관한 문헌 분석을 바탕으로 스마트기기 중독, 사이버 일탈, 사이버폭력별 진단척도 예비문항을 작성하였다. 예비문항에 대 한 척도의 타당화 검증을 위해 초등학교 20개교, 중학교 9개교를 대상으로 총 2370명에게 배포하였다. 확인적 요인분석 결과 초등학생 대상 검사도구는 총 5개의 요인이 추출되었고 중학생용 검사도구는 총 9개 요인이 추출되었다. 본 연구에서 타당화된도구는 학교현장에서 스마트 기기 사용 관련 역기능 문제를 진단하는 종합적 도구로실용적 기여를 할 것이다.

대리적 상호작용 교수설계 전략을 적용한 이러닝 콘텐츠의 학습 효과

이영주 ( Youngju Lee ),김태우 ( Taewoo Kim ) 한국교육공학회 2022 교육공학연구 Vol.38 No.2

The purpose of this study is to explore the learning effects of dialogue e-Learning contents that comprehensively applied vicarious interaction instructional design strategies in an e-Learning environments. To this end, dialogue e-learning contents based on vicarious interaction instructional design strategies were extracted from previous studies and monologue e-Leaning contents that instructor conducts lectures alone were produced, which were then delivered to two experimental groups(30 undergraduate and graduate students per group, total 60 students) to determine the learning effect differences, for which recall and transfer tests were conducted. The follow-up interviews identified emotional experiences of learning dialogue e-Learning contents. It was found that the dialogue e-Learning contents learning group had significantly higher recall and transfer than the monologue e-Learning contents learning group, experienced emotional comfort and empathy with learners in the contents, and experienced natural and focused learning participation. Based on the research results, instructional design implications for the support of vicarious interaction experiences in an e-learning environments are discussed.

독일 그뤼네스 반트 사례를 통한 「DMZ 평화의 길」 조성 및 보존에 관한 연구

이영주(Youngju Lee),박영준(Youngjun Park) 육군사관학교 화랑대연구소 2021 한국군사학논집 Vol.77 No.1

After the two Koreas jointly agreed on the “Panmunjom Declaration for Peace Prosperity and Unification on the Korean Peninsula” on April 27, 2018, a plan to transform the Demilitarized Zone (DMZ) into a peace zone began to develop. As interests in the DMZ border area increased, this plan named “DMZ Peace Road” supported by seven ministries is to be integrated with the “Korea Dulle-gil” project, which started in 2017 by the Ministry of Culture, Sports, and Tourism. The “DMZ Peace Road” project aims to open the restricted region to the public so that the DMZ border area can be revitalized and new jobs can be created along the long-distance walking tour crossing the DMZ border from east to west. In accordance with this purpose, detailed plans are being made to discover routes for a safe and comfortable walking tour and special sections that can be only experienced in the DMZ border area. In the process of pursuing this project, however, many political, economic, social and military problems are being identified. The process of making the path of peace is not progressing smoothly due to many demands and difficulties. Therefore, I would like to analyze the problems derived from the project and to examine the solutions through the analysis of the Grünes Band, a German demilitarized zone conservation projectthat prioritizes the preservation of the ecosystem and the environment. Grünes Band, which used to be the border between East and West Germany, has been reborn as a space of peace and nature conservation through the cooperation of environmental groups, state and federal governments, private organizations and individuals. By looking at the success stories of this project, I would like to look for clues that can solve the problems arising from our peace road project.

60 GHz 밀리미터파 무선 링크 RRH를 활용하는 셀룰러 시스템의 전송 성능 평가

이영주(Youngju Lee),성원진(Wonjin Sung) 한국전자파학회 2014 한국전자파학회논문지 Vol.25 No.7

최근 모바일 무선 통신의 발전으로 인해 셀 커버리지 확장을 위한 원격송신국(Remote Radio Head: RRH)이 널리 사용 되고 있다. 기존의 디지털 유닛(Digital Unit: DU)과 RRH의 연결은 광케이블을 통한 유선 링크로써, 광범위한 적용에는 비용적인 제한이 있다. 본 논문에서는 밀리미터파 대역을 활용하여 유선 링크를 무선 전송으로 대체하고, 원격으로 위치된 RRH를 활용하는 셀룰러 망 시스템의 구성을 고려하였다. 밀리미터파 무선 링크 전송에 영향을 주는 요소를 분석한 후, 현재 상용화되어 있는 LTE(Long Term Evolution) 네트워크를 이용하여 기존의 유선 링크 방식과의 비교를 통해 밀리미터파 무선 링크 RRH를 활용한 방식이 전체 셀룰러 시스템의 성능을 크게 저하시키지 않음을 보임으로써 유선 링크를 대체할 수 있는 방식임을 입증한다. Due to the recent development of mobile wireless telecommunication, RRHs(Remote Radio Heads) are widely being utilized to expand the cell coverage. Wire-link, an existing connection between DU(Digital Unit) and RRH through fiber cables, is considered to have limitations in relation to cost for a wide range of applications. This paper focuses on replacing the wire-link by wireless transmission using millimeter-wave, and implementing cellular network system through RRH from a remote location. After an influence element analysis on millimeter-wave wireless link transmissions, a comparative analysis between wireless link and an existing fiber link method will be made by utilizing currently commercialized LTE(Long Term Evolution), to prove the compatibility of millimeter-wave wireless link RRH method in replacing fiber link method without a significant decline in data transmission performance.

복합상업시설 매개공간과 어트랙션 요인의 상관성에 관한 연구 - VR/AR 연출 사례를 중심으로 -

이영주 ( Youngju Lee ) 한국공간디자인학회 2019 한국공간디자인학회논문집 Vol.14 No.7

(Background and Purpose)As the planning of intermediate space that provides the functions of access, movement, relaxation, etc., is taking on an importance amid the expansion and diversification of commercial multi-complexes, it has become increasingly necessary to map out the new attraction creation strategies for the intermediate space so as to expand accessibility of users beyond physical scale of the space and induce their revisitation. The intermediate space of commercial multi-complexes has shifted away from the story-telling and spatial configuration aspects of the past and is gradually evolving into a space interacting with the digital system, leading to various directing that applies VR/AR technology. Furthermore, the VR/AR technology is accelerating the spatial direction in the era of smart technology. For those reasons, it is time that we should explore a new approach to the spatial direction in the midst of the environmental changes of the times. Thus, this study was intended to analyze overseas and domestic cases of VR/AR directing for greater attraction of intermediate space of commercial multi-complexes, thus providing basic data for setting the basic course of spatial direction planning. (Method) In this study, we derived the ‘movability’, ‘eventability’, and ‘imageability’, the attraction generation factors, based on the preceding studies on the concept of attraction in space. Moreover, the analytical model was built by dividing the intermediate space of commercial multi-complexes into ‘access’, ‘connection’, and ‘core’ areas, and the VR/AR directing cases were analyzed. Specifically, the production types were derived and comprehensively analyzed through a case analysis on how VR/AR was produced and acted as a factor of spatial approach. (Results) In the intermediate space of commercial multi-complexes, the VR/AR directing had the attraction factors of ‘movability’, ‘eventability’, and ‘imageability’, thus inducing new spatial perception and experience transcending the boundaries of virtual world and reality to attract the visitors. ‘Movement’ was rendered by specific elements such as physical stimulation delivered through booths, structures and facilities and sensory stimulation delivered through facility experience, sound effect, and interactive experience. ‘Event’ was rendered by specific elements such as physical event based on formation of physical experiential zones and entertainment event of nonpermanent, seasonal, themed, and game types. ‘Imageability’ was rendered by specific elements such as ‘factual image’ created by landmark and reproductive directing, color contrast and symbolic imaging and ‘valued image’ created by non-routine and themed contents. (Conclusions) The results of this study showed that the VR/AR directing was the main mechanism for attraction which induced the users to gain new sensory experience, and furthermore, to increase their spatial satisfaction in the intermediate space of commercial multi-complexes. Particularly, intermediate space of commercial multi-complexes will be able to overcome physical limitation and sharpen their competitive edge in the market based on the differentiated image positioning.

문화관광형시장 활성화를 위한 공공디자인 사례연구

이영주 ( Youngju Lee ),이병훈 ( Byunghoon Lee ) 한국공간디자인학회 2019 한국공간디자인학회논문집 Vol.14 No.3

(Background and Purpose)These days, the functions of the traditional market have gradually become degraded amid changes in the distribution structure and the aging of facilities. Since 2008, the Small Enterprise and Market Service (SEMAS) has pushed ahead with a project that aims to promote the cultural tourism market as part of its efforts to stimulate the traditional market. However, no standard has been established to ensure systematic improvement of the traditional market despite continuous implementation of such projects to date; therefore, the connection between the details of development and effectiveness has remained weak. In particular, the traditional market serves as a community space that reveals the historic, cultural, and local characteristics of a specific region, and for that reason, a basic course of improvement should be implemented at the public level. Thus, the purpose of this study was to present a basic course of action related to the dimensions of improvement that would need to be taken into consideration when implementing a basic plan for encouraging the cultural tourism market from the standpoint of public design by analyzing excellent domestic and overseas cases of market stimulation pursued in conjunction with cultural tourism. (Method) The cultural tourism market aims to stimulate the traditional market that has been declining by developing the cultural and tourism-related elements of various regions. Therefore, this study was conducted from the perspective of public design for increasing its value. Moreover, the concept of projects to promote the cultural tourism market and their details was investigated in advance through examination of related data and materials. Based on our examination, we identified the connections between the details of cultural tourism market promotion projects and public design elements, which was followed by modeling and a case analysis. Through these methods, the results of this study were derived in connection with the basic course of action for the area in which improvement would need to be achieved in cultural tourism markets. (Results) The cases included in the analysis, which contributed to the promotion of markets in conjunction with cultural tourism resources, were considered from the perspective of public design, which suggested that there was a convergence among infrastructures, design, and ICT. In addition, 9 types of public design elements that were derived from the preliminary study, including culture, locality, leisure value, convenience, identity, informativeness, formative artistry, symbolism, and interaction, would need to be considered when mapping a cultural tourism market plan. (Conclusion) The results of this study showed that an approach would need to be taken from the standpoint of public design to transform cultural tourism markets into cultural tourism attractions in conjunction with their unique cultures, histories, and cultural resources and that the improvement items should be structured in such a way that various cultural experiences and positive participation could be encouraged beyond simple physical improvement of the environment.

감성요소에 의한 시지각적 연속성에 관한 연구 -복합쇼핑몰의 진입공간을 중심으로-

이영주 ( Youngju Lee ),이정교 ( Junggyo Lee ) 한국공간디자인학회 2017 한국공간디자인학회논문집 Vol.12 No.3

(Background and Purpose) In the current era of emotional consumption, the shopping mall complex is receiving attention as the newest public place for leisure and culture. As these shopping centers continue to become even larger and more complex, they also grow more difficult to navigate, causing confusion in visitors` perception of access to consumption spaces and the primary target space. Therefore, continuous research in planning these spaces is required to keep up with shifting concerns. This study intended to analyze the visual-perceptual sequence, focusing on sensibility elements as a methodology for facilitating customers` perception of access space in shopping complexes in order to determine which sensibility element is most important in designing similar spaces in the future. (Method) In this study, the author investigated the concept of the visual-perceptual sequence and sensibility elements, and identified expressive elements of the sequence through literature analyses. For sensibility elements influencing the sequence, the characteristic of each element was analyzed according to scholar Christian Mikunda`s theories on marketing to elicit emotional reactions in customers. Moreover, the author derived the concept and component elements of access spaces in shopping malls separately before subdividing these elements into internal and external components. Based on those criteria, analysis was confined to cases witnessed by the author, which corresponded to third-generation shopping complexes. Next, cases were analyzed by subdividing them by according to access space. Specifically, the author applied the sensibility elements presented in each space and conducted a correlation study showing how the visual-perceptual sequence and its elements can be directly expressed. (Results) Results showed, firstly, that emotional elements of “malling” and core attraction were found to be frequently expressed in external access spaces of shopping complexes. Additionally, expressions of movement and emphasis were particularly important in increasing accessibility for pedestrians. Second, malling and concept line elements were found to be frequently used in internal access spaces, while movement, emphasis, and rhythm were frequently expressed in the area of accessibility, leading to an overall perception of the space capable of offering a natural traffic flow pattern. (Conclusions) The results of this study suggest that sensibility elements in access spaces of shopping complexes hold key roles in continuous synchronization, inducing a natural sequence and spatial experience in physical space by stimulating the sensibility of visitors. In particular, as shopping mall spaces become increasingly multi-functional and over-sized, visitors need effective spatial recognition so as to ensure a comfortable environment and increase the likelihood they will revisit.

수사학으로 본 ‘수치심과 안녕감(well-being)의 관계’ 시론

이영주(Lee, Youngju) 한국수사학회 2021 수사학 Vol.- No.40

수치심은 도덕규범에 어긋나는 사태를 초래하거나 관계했을 때에 일어나지만, 곧 이를 바로잡아 같은 잘못을 저지르지 않으려는 마음가짐을 지니게 하는바 도덕감정으로 자리매김 된다. 본 연구는 그런 마음가짐의 주된 기제가 안녕감이라고 본다. 이 ‘안녕감’은 잘못에 따른 고통 즉 편찮은 마음을 해소하고 얻고자 하는 마음의 평화인바, 이를 지칭하는 학술 용어 ‘well-being’도 글자 그대로는 ‘잘삶’ 또는 ‘선한 존재(로서 삶)’ 정도의 도덕성을 포함한다. 그러나 학계(본 글에서는 주로 심리학)에서는 그 의미의 무게를 행복에 둔다. 이런 관점은 ‘자연의 조화가 깨져 야기된 고통에서 조화를 되찾음이 곧 쾌락’이라는 철학적 해석에서 그 타당성을 찾을 수 있겠으나, 외연을 행복주의로 좁힘으로써 웰빙이 지닌 수사(rhetoric)의 사회적 작용에 한계를 안기게 된다고 본다. 특히 발화 주체의 신뢰를 가늠하는 에토스라는 거울에 비추어, 웰빙이 말하는 안녕감이 수치심을 도덕감정으로 작동케 하는 데 부족함이 없는지 짚어본다. 또 왜 지금 도덕과 관련하여 안녕감을 수치심과 연계하여 고찰해야 할 필요가 있는지를 규명한다. Shame occurs in relation to situations that are antithetical to moral norms, but it soon becomes a moral sense which aims to correct behavior so that the same mistake is not made again. This study attempts to demonstrate that the main mechanism underpinning this is a sense of well-being. This well-being is a form of peace of mind that seeks to relieve the pain of a being at fault, or to ease mental discomfort, and the concept includes the morality of the ‘good life’ that is aimed for. However, in academic terms (in relation to this study, the field of psychology), the weight of its meaning lies in the idea of happiness. This view can be found in the philosophical perspective that pleasure is derived from the restoration of natural harmony in the wake of the pain and dissonance we have caused. However, narrowing its field of application to the attainment of happiness limits the social action entailed in attaining true well-being. In particular, in light of the mirror called Ethos, which is a gauge of the impetus behind our actions, the question is whether the goal of well-being is sufficient to allow shame to function as a moral emotion. In this light, this paper examines why it is necessary to consider the sense of well-being in tandem with shame, in relation to morality today.

보쉬 분사율 측정법에 따른 커먼레일 인젝터 분사량의 통계적 특성

이영주(Youngju Lee),이충훈(Choonghoon Lee) 한국자동차공학회 2017 한국자동차공학회 부문종합 학술대회 Vol.2017 No.5