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나노 부유 게이트 메모리 소자 응용을 위한 실리콘 나노-바늘 구조에 관한 연구
정성욱,유진수,김영국,김경해,이준신,Jung, Sung-Wook,Yoo, Jin-Su,Kim, Young-Kuk,Kim, Kyung-Hae,Yi, Jun-Sin 한국전기전자재료학회 2005 전기전자재료학회논문지 Vol.18 No.12
In this work, nano-needle structures ate formed to solve problem, related to low density of quantum dots for nano floating gate memory. Such structures ate fabricated and electrical properties' of MIS devices fabricated on the nano-structures are studied. Nano floating gate memory based on quantum dot technologies Is a promising candidate for future non-volatile memory devices. Nano-structure is fabricated by reactive ion etching using $SF_6$ and $O_2$ gases in parallel RF plasma reactor. Surface morphology was investigated after etching using scanning electron microscopy Uniform and packed deep nano-needle structure is established under optimized condition. Photoluminescence and capacitance-voltage characteristics were measured in $Al/SiO_2/Si$ with nano-needle structure of silicon. we have demonstrated that the nano-needle structure can be applicable to non-volatile memory device with increased charge storage capacity over planar structures.
정성욱(Sung-Wook Jung) 한국언론학회 2009 커뮤니케이션 이론 Vol.5 No.2
이 글은 손자병법에 있는 대적 경험의 개념화 방식을 커뮤니케이션 연구자의 관점에서 살펴봄으로써 커뮤니케이션 이론, 특히 커뮤니케이션 효과론의 철학적 전제를 밝혀 보려는 시도이다. 이 시도는 집단 간 경쟁의 정점으로서의 전쟁의 경험이 고대 수사학을 포함하는, 커뮤니케이션 현상에 대한 학문적 탐구의 역사적 뿌리라는 인식에 터 잡고 있다. 주된 검토의 대상이 된 구절은 계(計) 편의, 승패를 가르는 기준, 오사(五事)의 첫 번째 요소로 도(道)를 언급한 구절과 궤도(詭道)에 관련된 구절들이었다. 본 연구의 존재론적 검토는 손자병법의 ‘도’가 가진 현실적이면서 규범적인 힘을 드러내는 동시에 손자병법이 그 표면에서 유지하고 있는, 적과 아방 간의 선명한 구분을 해체함으로써 ‘피아의 뒤섞임’이 커뮤니케이션 효과론의 존재론적 전제라는 점을 밝히고 그 함의를 ‘편 가르기’ 문화의 맥락에서 논의하였다. Drawing on ‘The Art of War’ by Sun-tzu, this philosophical inquiry attempts to clarify presuppositions without which communication effects theory can hardly make sense. Inspired by the fact that war experience is not only a backdrop of the emergence of communication studies as a field of study but also that of the birth of philosophy and rhetoric as an antagonistic pair in ancient Greece, this study succeeds in drawing from the war experience of ancient China, which is articulated in the classic text, an ontological presupposition of communication effects theory. It is that in order for the communication effects to be real either as a persuasive power or as a deceptive force, the seemingly clear borderline between ‘us’ and ‘them’ should be deconstructed. The study further discusses practical implications of the ontological presupposition, especially in addressing problems of the partisan culture of Korea.
정성욱(Jung, Sung-Wook),김문덕(Kim, Moon-Duck) 한국실내디자인학회 2017 한국실내디자인학회논문집 Vol.26 No.1
This study reviews the process of creating the patterns through the Christopher Alexander’s books to discover the fundamental rules for creation of the pattern language. The essential ideas of 11 rules describing the characteristics of the pattern language are organized by keyword depending on the characteristics of each rule. Then, this study analyzes which keyword was applied importantly and how it had been developed chronologically in the Alexander’s books. As a result, 5 keywords — reflection of cultural difference, reflection of human desires, solving the repeated problem, function suitable for principal purpose, and network structure — are applied to his early books in which the pattern language was theoretically developed, the pattern of traditional society was discovered and the network structure was developed. Another 5 keywords — user participation method, new problem solving, structure preserving transformation, post-mechanization method, and central invariant structure —are applied to the books in his mid-term after completion of the pattern theory which discover new pattern for contemporary society and apply the pattern language to time and space. In his later books which organize the theory of pattern language and suggest the direction for using the pattern language, 5 keywords — wholeness, post-mechanization method, user participation method, new problem solving, and structure preserving transformation — are applied. Users may use the pattern language more precisely if he/she considers the keywords of the early period in searching the patterns of existing environment, the keywords of the intermediate period in searching the patterns of new environment or in regard to time and space, and the keywords of the later period in considering direction of the application of the pattern language.
정성욱(Sung Wook Jung),양홍석(Hongsuk Yang),김수욱(Soo Wook Kim) 한국경영과학회 2012 韓國經營科學會誌 Vol.37 No.4
In recent years, service delivery systems employing a self-service approach have been rapidly spreading. Since a self-service system provides a lower product price, it attracts more customers. However, some system managers are still hesitant to accept a self-service system, because there is no systematic model to predict its performance. Therefore, this research attempts to provide a systematic and quantitative model to predict the performance of a self-service system, focused specifically on a self-service gas station. Under this model, the traditional queuing theory was adopted to describe the general self-service process, but it is also assumed that some changes occur in both the customer arrival rate and the service performance rate. In particular, the price elasticity was introduced to capture the change in the customer arrival rate, and the existence of learning effect and helpers were assumed to design the changed service performance rate. Under these assumptions, a simulation model for a self-service gas station is established, and three performance measurements, such as average number of customers, average waiting time, and Utilization are observed, depending on the changes in price difference and helper-operating time. In this research, the optimal operation strategy for price differentiation and helper-operating time is proposed in accordance with the level of the customer learning rate. Although this research confines the scope of the study to the self-service gas station model, the results of this research can be applied to any type of self-service system.