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귀인이론(歸因理論) 기반의 지역 공공인재학부 교육사업 성과평가에 관한 연구 - 동아대학교 석당인재학부 교육사업에 있어 집단별 의식차이 분석을 중심으로 -
이동규(Dong-Kyu Lee),민연경(Youn-Kyoung Min) 한국지방행정학회 2017 한국지방행정학보 (KLAR) Vol.14 No.1
The purpose of study is to identify influences of attribution of university headquarters, executive direction and management, student three groups - establishment・ establishment, management, entrance - to the performance evaluation index. This study offers development plan of the public sector honors college by analysing difference in group consciousness to the comparative significance of performance evaluation index for co-creation. The study attempt to investigate attribution theory and difference in group consciousness based on the 1st actions of 3 group results(establishment・ establishment, management, entrance) affect the performance evaluation indexes. For that, this study has developed 19 indicators, 5 Items for performance evaluation using program logic model and AHP method focusing on the seokdang honors college of Dong-A University. Analysis was pronounced differences between groups consciousness. University headquarters perceived the number of people passing exams, employment rates than other groups as important factors because university provides various benefits to attract talented student. On the other hand, executive direction and management perceived performance index of consultation program, training, attendance, the number of host because student motivation recognized as important. Student who demand for education services are recognized scholarship benefits(budget), the number of people passing exams of imput・initiative outcome item as major factors by opportunity costs for entrance to university located in Seoul. The study results suggest need for student・parents satisfaction as key performance indicator, good communication within the 3 groups of public sector honors college in order to improve the quality of operation since awareness about 17 of 19 performance indicators was a big gap. The study shows need for maintaining consistency・durability in government s policy to foster motivated talent in the community and joint venture creation.
이동규,김해봉,양병도,김영석,이형규,Lee, Dong-Kyu,Jin, Hai-Feng,Yang, Byung-Do,Kim, Young-Suk,Lee, Hyung-Gyoo 한국전기전자재료학회 2010 전기전자재료학회논문지 Vol.23 No.8
The devices based on electrically erasable programmable read-only memory (EEPROM) structure are proposed for the detection of external electric charges. A large size charge contact window (CCW) extended from the floating gate is employed to immobilize external charges, and a control gate with stacked metal-insulator-metal (MIM) capacitor is adapted for a standard single polysilicon CMOS process. When positive voltage is applied to the capacitor of CCW of an n-channel EEPROM, the drain current increases due to the negative shift of its threshold voltage. Also when a pre-charged external capacitor is directly connected to the floating gate metal of CCW, the positive charges of the external capacitor make the drain current increase for n-channel, whereas the negative charges cause it to decrease. For an p-channel, however, the opposite behaviors are observed by the external voltage and charges. With the attachment of external charges to the CCW of EEPROM inverter, the characteristic inverter voltage behavior shifts from the reference curve dependent on external charge polarity. Therefore, we have demonstrated that the EEPROM inverter is capable of detecting external immobilized charges on the floating gate. and these devices are applicable to sensing the pH's or biomolecular reactions.
건설재료의 안전적 제어를 위한 표준물질 (Standard Reference Materials) 도출
이동규,이건우,최명성,Lee, Dong Kyu,Lee, Keon Woo,Choi, Myoung Sung 한국안전학회 2017 한국안전학회지 Vol.32 No.5
The purpose of this study is to develop standard reference materials for safety control of construction materials considering the required performance of standard materials including flow performance incorporating particles. The flow characteristics of concrete are very complicated depending on mixing proportions of constituent materials, admixtures, amount of mixing, type of mixer, time of mixing, temperature and so forth. Uncertainties and multidimensional properties of concrete have been evaluated through various studies but there are few researches for the development of standard reference material. In this study, based on the rheological concept, the flow performance of construction materials was evaluated to understand the properties of standard reference materials and was finally obtained representing materials which simulate the standard reference materials.
이동규,신수미,박성수,Lee, Dong-Kyu,Shin, Soo-Mi,Park, Sung-Soo 한국전산구조공학회 2006 한국전산구조공학회논문집 Vol.19 No.4
구조물의 최적 설계는 유한요소해석과 그것을 상용할 수 있는 컴퓨터 기술의 진보와 함께 발전해 오고 있다. 특히 위상 최적설계는 제한 조건들을 만족하는 구조물의 형상뿐만 아니라 최적 위상을 산출할 수 있다는 점에서 최근들어 많이 사용되고 있다. 일반적으로 유한요소해석은 영계수나 프와송 비와 같은 구조물의 재료특성 계수와 작용 하중 같은 변수들의 확정된 값을 가정하여 사용하나, 실제적으로 이러한 값들은 외부 환경의 영향이나 제조과정의 에러 등으로 인한 불확실성을 가진다. 따라서 정적 또는 동적인 구조응답 해석에서 다른 추이를 보일지도 모르며, 이는 구조물의 최적설계에도 영향을 미칠 수 있다. 본 논문에서는 구조물의 정적응답 해석에 대해 불확실성을 고려하는 간격 유한요소방법을 이용하여 구조물의 위상최적설계를 수행하고 그 해법을 제시하였다. 구조물의 최적설계 결과는 이전에 사용되었던 결과와 비교를 통하여 그 타당성을 입증하였다. 본 해석방법은 기존의 밀도분포법과 유한요소해석에 의한 위상설계와 비교하여 간단한 방법으로 서 선형 탄성 구조 응답의 불확실성을 고려하는 대체적인 구조물의 위상 최적결과를 예측할 수 있다. Structural optimization design has been developed with finite element analysis using effective and fast computational technology. Especially topology optimization design has been recently often used since it yields an optimal topology as well as an optimal shape under satisfied constraints. In general in finite element analysis, it is assumed that the structural material properties such as Young's modulus and Poisson's ratio and the variable of applied loading are fixed with obvious values in structure. However practically these values may take uncertainties because of environmental effect or manufactural error of structures. Therefore static or dynamic analysis of the structures may make an error, then finally it may have an influence on qualify of optimal design. In this study, the topology optimization design of structure is carried out using so called the interval finite element method, and the analysis method Is proposed. The results are also validated by comparing with conventional topology optimization results of density distribution method and finite element analysis results. The present method can be used to predict the optimal topology of linear elastostatic structures with respect to structural uncertainty of behavior.
Cognitive Radio 시스템 환경에서의 다중 홉 릴레이 전송 기법
이동규,신정채,임은택,이현우,조호신,Lee, Dong-Kyu,Shin, Jung-Chae,Lim, Eun-Taek,Lee, Hyun-Woo,Cho, Ho-Shin 한국통신학회 2008 韓國通信學會論文誌 Vol.33 No.9a
본 논문에서는 IEEE 802.22 기반의 인지라디오 시스템에서 다중 홉 릴레이 방식의 적용 방안을 제안한다. 먼저, 중계기를 통한 전송 시나리오를 가정하고 이를 지원하기 위한 물리 채널 프레임 구조를 예시한다. 다음으로, 분산 감지 (distributed sensing) 방식을 이용한 가용 채널 결정 방식을 제안하고 이를 토대로, 기지국 중심의 중앙집중형 (centralized) 채널 할당 기법 및 릴레이 전송을 위한 중계기 선택 알고리즘을 개발하였다. 그리고 수학적 해석과 시뮬레이션을 통한 성능 분석 결과는 제안한 다중 홉 릴레이 방식이 중계기를 사용하지 않은 기존의 인지 라디오 시스템에 비해 스펙트럼 이용효율과 시스템 수율 측면에서 성능 향상이 있음을 보여준다. In this paper, a multi-hop relaying transmission scheme is analyzed regarding its feasibility and potentiality in the IEEE 802.22-based cognitive radio (CR) environment. Shortly, basic design issues are addressed such as relay station (RS) deployment and a frame structure of physical channel to escape inter-hop interference. This paper mainly develops a radio resource management scheme based on spectrum sensing results aggregated from CR secondary nodes and improves the opportunistic spectrum sharing efficiency. In particular, a decision rule about a channel availability is made using a distributed sensing method. Subsequently, spectrum allocation and routing path decision procedures are proposed to establish a link from source to destination with a hop-by-hop manner. Simulation results show that the proposed multi-hop relaying scheme is substantially profitable in CR environments if the number of hops and RS deployment are designed in such a way that the spectrum sharing gain is larger than spectrum division loss which is inherently induced in multi-hop relaying systems.