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      • KCI등재

        한 성인교육자의 농촌지역 교육 경험을 통한 자문화기술지

        이다현 한국방송통신대학교 원격교육연구소 2017 평생학습사회 Vol.13 No.2

        This study examined the experiences of an adult educator who conducted a community education in rural areas through an auto-ethnography. As an adult educator, I became aware of local residents and rural education through the experience of Byulbit-gun, Dalbit-gun and Batbit-si, the background of this study. Through the educational planning and operation process, I, as an outsider, could recognize the difficulties of working in the community lifelong education, and had meet diverse characteristics who could not be comprehended with the typical concept of an adult learner. I also confirmed that the mistrust of local residents to an involuntary form of education and distrust of learning site. Meanwhile, I learned that the community was a habitat for survival and living of residents, and could find myself who did not understand their language of life. Through a series of experiences, the researcher had a reflective experience that the adult learners should be met in the rural context and the educational practice should be performed as an educational experience rather than a clear object of education. I also could have a chance to change of recognition that adult learners should be understood as residents prior to the adult learner. Through this study, I suggest the followings suggestions to adult educators and researchers who would like to make better practice. First, I suggest research on region and regional adult learners. This will enable to overcome the limitation of training adult educators and local education that have been out of context and make educational practice based on regional contexts. Second, adult educators need to participate a new theoretical discussion about themselves through opening their site and sharing experience. The role of educators at the field is more than instruction. Thus, adult educators should contribute to the formation of new discourse on adult educators' concepts and roles through opening of their own fields. Finally, I suggest building relationships with an area based on the trust. Regional education consists of a variety of factors and relationships. When adult educators and researchers become part of the relationship without separating themselves from the area, they can be able to reflect region fully into their educational practice. 이 연구는 농촌에서 주민교육을 수행한 한 성인교육자의 경험을 자문화기술지를 통해 탐색한 결과물이다. 성인교육자인 나는 이 연구의 배경이 되는 별빛군․달빛군․햇빛시에서의 교육 경험을 통해 농촌지역 주민과 교육을 새롭게 인식하였다. 교육기획과 운영 과정에서 외부인으로서는 알 수 없는 지역 평생교육 현장에서 일하기의 어려움을 확인하였으며, 전형적 성인학습자의 개념으로 일괄할 수 없는 다양한 특성을 가진 지역 주민을 접하였다. 또한 비자발적 형태의 교육에 대한 지역 주민의 불신과 학습장에 대한 불안감을 확인하였다. 그 가운데 지역을 주민의 생존과 생활의 터전으로 이해해야 한다는 것을 인식하였으며, 그들의 생활 언어를 이해하지 못하는 부족한 나 자신을 발견하였다. 일련의 경험으로 연구자는 지역의 맥락 속에서 성인학습자를 만나야 하며, 교육의 분명한 목적보다는 교육적 경험 차원에서 실천하는 것이 필요하다는 반성적 경험을 하였다. 또한 성인학습자이기 전에 지역 주민으로서 성인학습자를 이해해야 한다는 인식 전환의 계기를 가질 수 있었다. 이 연구를 통해 본 연구자는 좀 더 나은 교육 실천을 하고자 하는 성인교육자와 연구자에게 다음과 같은 세 가지 제안을 하고자 한다. 첫째, 지역과 지역 성인학습자에 대한 연구를 제안한다. 이는 비맥락적 성인교육자 양성과 지역교육의 한계를 극복하고, 지역 맥락에 기반을 둔 교육 실천을 가능하게 할 것이다. 둘째, 성인교육자 스스로 현장에 대한 개방과 경험 공유를 통한 성인교육자에 대한 새로운 이론적 논의 시도가 필요하다. 현장에서 성인교육자의 역할은 교수 행위를 넘어서는 것이다. 이에 성인교육자 스스로 다양한 자기 현장 개방을 통해 성인교육자의 개념과 역할에 대한 새로운 담론 형성에 기여해야 한다. 셋째, 성인교육자와 연구자들의 지역과 신뢰에 기반을 둔 맺음을 제안한다. 지역교육은 다양한 요소와 주체의 관계 속에서 이루어진다. 성인교육자와 연구자 스스로 지역과 분리되지 않고 관계의 일부가 되었을 때 그들의 교육 실천에 지역을 충분히 담아낼 수 있을 것이다.

      • KCI등재

        An Online Tilt Estimation and Compensation Algorithm for a Small Satellite Camera

        이다현,황재혁 한국항공우주학회 2018 International Journal of Aeronautical and Space Sc Vol.19 No.1

        In the case of a satellite camera designed to execute an Earth observation mission, even after a pre-launch precision alignment process has been carried out, misalignment will occur due to external factors during the launch and in the operating environment. In particular, for high-resolution satellite cameras, which require submicron accuracy for alignment between optical components, misalignment is a major cause of image quality degradation. To compensate for this, most high-resolution 1 satellite cameras undergo a precise realignment process called refocusing before and during the operation process. However, conventional Earth observation satellites only execute refocusing upon de-space. Thus, in this paper, an online tilt estimation and compensation algorithm that can be utilized after de-space correction is executed. Although the sensitivity of the optical performance degradation due to the misalignment is highest in de-space, theMTF can be additionally increased by correcting tilt after refocusing. The algorithm proposed in this research can be used to estimate the amount of tilt that occurs by taking star images, and it can also be used to carry out automatic tilt corrections by employing a compensation mechanism that gives angular motion to the secondary mirror. Crucially, this algorithm is developed using an online processing system so that it can operate without communication with the ground.

      • KCI등재후보

        번역교육을 위한 효율적인 연상번역 연구

        이다현 현대영어교육학회 2007 현대영어교육 Vol.8 No.1

        This study focused on Film Translations in college courses because a systematic model and strategic approach are badly needed in the flood of imported films in today's globalized world. Such an approach can maximize effective screen translation. If screen materials are to be translated into other languages and put on the screen, the translated works should transmit the intentions of the writers and directors exactly as other literary works do. However, in the screen translation, unlike in other literary works, the translation of image signs as well as the translation of linguistic signs should be included. Screen translation is the process of transferring and supplementing signs into a target screen sign text. Therefore, picking up the core of the most important context is essential. In this study I defined semiotic cognitive signs of screen expression in non-language and in language sign. I also analyzed implication, which is used in transferring the implied language of the source text, in terms of both cognitive aspect and pragmatic combination assumption, reflecting the two aspects, visual sign and language sign, respectively. Componential analysis was used to examine the strategies (e.g., exclusion of source-language redundancies and superfluities, omission, ellipsis of condensation and implication) used.

      • KCI등재

        The hypertension drug, verapamil, activates Nrf2 by promoting p62-dependent autophagic Keap1 degradation and prevents acetaminophen-induced cytotoxicity

        이다현,박정수,이유설,성수행,이용호,배수한 생화학분자생물학회 2017 BMB Reports Vol.50 No.2

        Nuclear factor erythroid 2-related factor 2 (Nrf2) provides a cellular defense against oxidative stress by inducing the expression of antioxidant and detoxification enzymes. The calcium antagonist, verapamil, is an FDA-approved drug prescribed for the treatment of hypertension. Here, we show that verapamil acts as a potent Nrf2 activator without causing cytotoxicity, through degradation of Kelch-like ECH-associated protein 1 (Keap1), a Nrf2 repressor. Furthermore, verapamilinduced Keap1 degradation is prominently mediated by a p62-dependent autophagic pathway. Correspondingly, verapamil protects cells from acetaminophen-induced oxidative damage through Nrf2 activation. These results demonstrated the underlying mechanisms for the protective role of verapamil against acetaminophen-induced cytotoxicity.

      • KCI등재후보

        Interrelated Atrioventricular Reentrant Tachycardia and Idiopathic Left Ventricular Tachycardia in a Patient with Manifested Bystander Accessory Pathway

        이다현,박승정,온영근,김준수,박경민 대한부정맥학회 2017 International Journal of Arrhythmia Vol.18 No.2

        Double tachycardia is defined as the coexistence of supraventricular tachycardia (SVT) and ventricular tachycardia (VT). In clinical practice, incidentally encountered double tachycardia is difficult to diagnose during electrophysiology study without prior documentation of both tachycardias. SVT can be confused with VT because SVT sometimes show an aberrant conduction depending on heart rate. In the present case, a patient with Wolff-Parkinson-White syndrome exhibited atrioventricular reentrant tachycardia (AVRT) via a concealed bypass tract and idiopathic left ventricular tachycardia (ILVT), which were difficult to discriminate because of their similar cycle length and interrelationship.

      • 1P-381 : Polymeric surface coating as an active layer for membrane application

        이다현,김동현,양성윤 한국공업화학회 2014 한국공업화학회 연구논문 초록집 Vol.2014 No.1

        High selective rejection but not reduced flux may be the important property for water-filtration membrane. We have studied polymer surface coatings for creating very thin and powerful active layer atop of substrate membrane. Amphiphilic block copolymers have the ability to build self-assembled structures. Therefore, we studied a new blend system made by amphiphilic block copolymer and homopolymer for porous membrane. Amphiphilic block copolymer is A/B diblock copolymer comprised of hydrophilic poly(ethylene oxide)(PEO) and hydrophobic polyethylene(PE). They were blended with a water-soluble homopolymer. The A/B block copolymer and the homopolymer were coated alumina membrane. The coating was prepared by layer-by-layer deposition. It had a nanostructure which was induced by annealing. The homopolymer was selectively removed afterwards, therefore, a nanoporous structure was created. Finally, filtration property of the nanoporous film was studied.

      • KCI등재후보

        대전지역 시민정치참여 운동에서의의사소통 과정에 대한 연구-‘누구나정상회담@대전’ 사례를 중심으로-

        이다현 참여연대 2018 시민과세계 Vol.- No.33

        This study emphasizes that political agendas have to be drawn from citizens’ daily life to reflect their strong desire for engagement and narrow down a gap between citizens and politics. In this regard, ‘OpenSummit@Daejeon’, a voluntary civic engagement movement during a local election period in 2018 that fostered conversations among citizens and drew citizens’ agendas from the conversation, is analyzed in this study with in-depth interviews and some posts on website. As a result, this study found that citizens have strong desires for social and political engagement, and a mutual communication enables them not only to strengthen civic capacity but also to perceive their public role as citizen. In addition, it is also verified that a conversational platform that helps citizens to participate in more freely by realizing a solidarity among diverse agents provides a new political space for civil society as well as strengthens their capacity. 본 연구는 시민들의 높은 사회참여 욕구와 정치에 대한 괴리감을 좁히기 위해, 시민의 일상으로부터 정치 의제를 도출해야 함을 강조한다. 이를 위해 2018년 제7회 전국동시지방선거 시기에 시민들 간의 대화로부터 정치의제를 도출해낸 자발적 시민참여운동인 ‘누구나정상회담@대전’ 사례를 연구대상으로 선정하고, 심층인터뷰와 홈페이지 게시글 분석 등을 진행했다. 그 결과, 시민들의 사회참여, 정치참여에 대한 높은 욕구를 확인할 수 있었고, 상호소통하는 과정을 통해 시민역량이 강화되고 자신들의 공적 역할을 인식하고 있음을 확인할 수 있었다. 또한 시민들이 자유롭게 참여할 수 있는 대화 플랫폼 속에서 다양한 시민들 간의 연대를 실현시킴으로써, 시민사회 전체의 역량을 강화하고 시민사회의 새로운 정치적 공간을 제공하는 것을 확인할 수 있었다.

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