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테스트가 가능한 부분적으로 완성된 실행파일을 통한 개발기한 단축에 관한 연구
조재현 ( Jaehyun Jo ),유혁 ( Chuck Yoo ) 한국정보처리학회 2010 한국정보처리학회 학술대회논문집 Vol.17 No.2
모바일 환경에서 새로운 하드웨어를 장착한 모델을 시장에 적기에 출시하는 것이 중요하다. 그러나 새로운 하드웨어 테스트와 관련이 없는 모듈의 인터페이스 변경에 의한 unresolved symbol 에 의한 링크에러로 인해 테스트 실행파일의 생성이 늦어져 새로운 하드웨어의 검증이 늦어지고 이로 인해 전체적인 개발일정이 지연 되는 불합리한 경우가 발생 하는 경우가 많았다. 본 논문은, 새로운 하드웨어 검증과 관련이 없는 모듈의 unresolved symbol 을 수정하지 않은 상태에서 실행 파일을 생성할 수 있도록 하는 링커를 제안하고, 테스트가 가능한 최소한의 모듈만 가지고도 unresolved symbol 에 실제 의미 있는 접근이 발생 하기 전까지 하드웨어 검증이 가능하게 함으로서 전체 개발 기한을 단축 할 수 있는 방법을 제시한다.
유형론적으로 유사한 제2언어의 선행 학습경험이 제3언어로서의 한국어 습득에 미치는 효과 연구
조재현 ( Jaehyun Jo ) 연세대학교 언어정보연구원(구 연세대학교 언어정보개발원) 2011 언어사실과 관점 Vol.27 No.-
In this study the author conducted an experimental test of adult third language (L3) acquisition whose results provide concrete and clear evidence for the Cumulative Enhancement Model (CEM; Flynn, Foley and Vinnitskaya, 2004). The main research questions examined in the present study were as follows: (1) whether L1 or L2 has a privileged role in L3 acquisition as to syntactic transfer, (2) what particular categories of the syntactic knowledge in Korean were acquired most and least easily by those with previous experience; (3) if age factor matters with respect to syntactic transfer in L3 acquisition, and lastly, (4) whether syntactic transfer is limited only to the initial state of L3 acquisition. The current study reports data from three experimental groups as follows: (Group A) L1 English/L2 Korean, (Group B) L1 English/L2 Japanese/L3 Korean, (Group C) L1 Japanese/L2 English/L3 Korean. All subjects were tested on their knowledge of 6 different types of syntactic categories (10 subcategories) of Korean by the elicited imitation methodology (Lust, Chien and Flynn, 1987; Lust, Flynn and Foley, 1996) with Korean sentences of varying types.
북한 보건의료전략의 분석과 치과 분야에서의 적용 현황 고찰
정서연(Seoyeon Jung),주우찬(Woochan Joo),조재현(Jaehyun Jo),안경수(Kyeongsoo An),이혜원(Haewon Lee),최성호(Seong-Ho Choi),정회인(Hoi-In Jung) 대한치과의사협회 2020 대한치과의사협회지 Vol.58 No.9
In preparing for the era of Korean reunification, it is essential to consider the integration of medical systems and human resources. While Korean dental practitioners are expanding their activities in various fields both domestically and internationally, there are many restrictions on the activities for improving the health of North Korean people due to political and historical reasons even nowadays. In addition, there is little is known about the current state of dental health in North Korea. We analyzed the reports published by the World Health Organization (WHO) and the Ministry of Public Health of North Korea prepared individually or in cooperation, and investigated the current status of the health care strategy applied to the dental field by conducting a full investigation of the 2018 『Rodong』newspaper. Based on the above, we tried to grasp the major health care strategies in North Korea and their application. Understanding the direction and status of North Korea"s health care system would be an important cornerstone for international cooperation and practical activities to improve oral health care of North Koreans in the future. And there is a need that studies should be steadily conducted in various methods to overcome the heterogeneity of the two Koreas in the long-term perspective.
장주연(Jang, Juyeon),박형식(Park, Hyeongsik),안시현(Ahn, Sihyun),조재현(Jo, Jaehyun),장경수(Jang, Kyungsoo),이준신(Yi, Junsin) 한국신재생에너지학회 2010 한국신재생에너지학회 학술대회논문집 Vol.2010 No.11
Cost efficient and large area deposition of superior quality Al₂O₃ doped zinc oxide (AZO) films is instrumental in many of its applications including solar cell fabrication due to its numerous advantages over ITO films. In this study, AZO films were prepared by a highly efficient rotating cylindrical dc magnetron sputtering system using AZO target, which has a target material utilization above 80%, on glass substrates in argon ambient. A detailed analysis on the electrical, optical and structural characteristics of AZO thin films was carried out for solar cell application. The properties of films were found to critically depend on deposition parameters such as sputtering power, substrate temperature, working pressure, and thickness of the films. A low resistivity of {sim}5.5{times}10-4{Omega}-cm was obtained for films deposited at 2kW, keeping the pressure and substrate temperature constant at 3 mtorr and 230?C respectively, mainly due to an increase in carrier mobility and large grain size which would reduce the grain boundary scattering. The increase in carrier mobility with power can be attributed to the columnar growth of AZO film with (002) preferred orientation as revealed by XRD analysis. The AZO films showed a high transparency of>87% in the visible wavelength region irrespective of deposition conditions. Our results offers a cost-efficient AZO film deposition method which can fabricate films with significant low resistivity and high transmittance that can find application in thin-film solar cells.