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Synthesis of Tungsten Diselenide based on Self-Limiting Layer Synthesis
Kyunam Park(박규남),Youngjun Kim(김영준),Jusang Park(박주상),Hyungjun Kim(김형준) 대한전자공학회 2017 대한전자공학회 학술대회 Vol.2017 No.6
A process for the self-limited layer synthesis (SLS) of WSe₂ on SiO₂ substrates has been developed that provides systematic layer number controllability with micrometer-scale (>90 %) and wafer-scale (~8 cm) uniformity suitable electronic and optoelectronic device applications. This was confirmed by the fabrication and testing of a WSe2 back-gated field effect transistor (FET) using Pd (30 nm) as the contact metal, which exhibited p-type behavior with an on/off ratio of ~106 and a field-effect hole mobility of 2.2 cm2/Vs value, which was higher than has been reported for WSe2-based FETs produced by conventional chemical vapor deposition. On the basis of these results, it is proposed that the SLS method is universally applicable to a range of device applications.
KyuNam Shim 한국중원언어학회 2013 언어학연구 Vol.0 No.28
The purpose of this study is to investigate the extent to which primary school teachers of English are aware of critical language assessment with reference to their assessment practice. For these purposes, the teachers’ usual approach of assessment was surveyed, and their thoughts and views on the principles of critical language assessment were analyzed. To conduct the study, a research tool consisting of some open-ended questions and some reading material-based paper work was administered to 19 teachers from 2 different city areas. The results indicate that generally teachers were familiar with the great part of the principles of critical language assessment although the term itself was new to them. Meanwhile there are a number of principles which were not supported by the participants: Obtaining student’s consent and handing over their inherited power to the students. Some areas needing further investigation were identified in the last part of the study.
이벤트 기반 다중 쓰레드에 의한 멀티미디어 프리젠테이션에 관한 연구
이규남(Kyunam Lee),나인호(Inho Ra) 한국정보과학회 2003 한국정보과학회 학술발표논문집 Vol.30 No.2Ⅰ
본 논문에서는 멀티미디어 프리젠테이션 과정에서 발생할 수 있는 여러 동기화 요소를 고려한 프리젠테이션 제어 방안에 대하여 기술하였다. 효율적인 프리젠테이션을 위하여 모노 미디어의 개별적인 효과 표현과 시나리오를 기반으로 한 스케쥴러, 그리고 여러 하드웨어 및 소프트웨어 관리 쓰레드 등으로부터 동기화와 직 · 간접적으로 관련된 이벤트를 발생시키고, 이러한 이벤트를 종합적으로 폐기하거나 처리의 선후관계를 다시 정의하는 등 프리젠테이션 환경에 따른 최적의 서비스 품질을 유지할 수 있도록 고려하였다.