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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.
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.
NOSArmor: Building a Secure Network Operating System
Jo, Hyeonseong,Nam, Jaehyun,Shin, Seungwon Hindawi Limited 2018 Security and communication networks Vol.2018 No.-
<P>Software-Defined Networking (SDN), controlling underlying network devices (i.e., data plane) in a logically centralized manner, is now actively adopted in many real world networking environments. It is clear that a network administrator can easily understand and manage his networking environments with the help of SDN. In SDN, a network operating system (NOS), also known as an SDN controller, is the most critical component because it should be involved in all transactions for controlling network devices, and thus the security of NOS cannot be highly exaggerated. However, in spite of its importance, no previous works have thoroughly investigated the security of NOS. In this work, to address this problem, we present the NOSArmor, which integrates several security mechanisms, named as<I> security building block </I>(SBB), into a consolidated SDN controller. NOSArmor consists of eight SBBs and each of them addresses different security principles of network assets. For example, while role-based authorization focuses on securing confidentiality of internal storage from malicious applications, OpenFlow protocol verifier protects availability of core service in the controller from malformed control messages received from switches. In addition, NOSArmor shows competitive performance compared to existing other controllers (i.e., ONOS, Floodlight) with secureness of network assets.</P>
창업 Micro Degree 비교분석 : 국내 5개 대학 창업 및 창업·경영융합 Micro Degree를 중심으로
김재현(Jaehyun Kim),조세현(Sehyun Jo) 한국진로창업경영학회 2022 한국진로창업경영학회지 Vol.6 No.1
본 연구는 국내 창업 및 창업·경영융합 Micro Degree를 분석하여 특징을 고찰하고 우리나라 대학의 창업교육 활성화 방안을 제언하고자 한다. 연구대상은 창업 Micro Degree 한남대학교, 부산가톨릭대학교, 목원대학교, 인하대학교와 창업·경영융합 Micro Degree 한양대학교를 선정하여 사례분석을 하였다. 본 연구를 통행 살펴본 국내 Micro Degree의 시사점은 첫째, 창업 Micro Degree는 가장 낮은 수준의 학습량을 요구하는 학위지만 특징 영역에서 전문성 높은 학위라는 이중적인 특성이 있으며 이런 특성을 갖는 창업 Micro Degree가 왜 필요한가에 대한 합리적 근거 마련과 사회적 요구를 구체화하는 것이 필요하다. 둘째, 국내 창업 Micro Degree 추진을 위해서는 사회적 ·정책적 환경을 조성하고 공동의 목표를 도출하는 단계가 필요하다. 마지막으로 창업 Micro Degree의 사회적 인식 재고와 정책 환경을 마련한 이후에는 창업 Micro Degree 도입을 위한 정책 운용이 필요하며 대학 등에서 창업 Micro Degree를 구현하고 이후에 중장기적으로 학점은행제의 시스템으로 확대 및 일 경험이나 학습경험을 인증하여 통합하는 방식으로 발전하는 단계적 접근이 필요하다. 본 연구는 5개 대학의 사례분석으로 일반화의 한계가 있지만, 일반화를 도출할 수 있는 프레임워크를 제공하며 향후 대학의 창업교육의 다양한 활성화 모델 및 지원정책 등 창업 진화적 토대 마련을 모색하고자 한다. This study analyzes the micro-degrees of domestic start-up, start-up, and management convergence, examines the characteristics, and proposes a plan to revitalize start-up education at Korean universities. The subjects of the study were case analysis by selecting Start-up Micro Degrees Hannam University, Busan Catholic University, Mokwon University, Inha University, and Business Administration (Start-up and Management Convergence) Micro Degrees Hanyang University. The implications of Micro Degrees in Korea, which passed through this study, are that Micro Degrees require the lowest level of learning, but they have a dual characteristic of professional degrees in characteristics, and it is necessary to establish a reasonable basis for why Micro Degrees are needed. Second, in order to promote micro-degrees for domestic start-ups, it is necessary to create a social and policy environment and derive common goals. Finally, after establishing a social awareness inventory and policy environment for start-up Micro Degrees, a step-by-step approach is needed to implement start-up Micro Degrees in universities and other universities and expand them into a credit banking system and certify and integrate work or learning experiences. Although this study has limitations in generalization due to case analysis of five universities, it provides a framework for deriving generalization and seeks to lay the foundation for start-up evolution, including various revitalization models and support policies for university start-up education in the future.
Adaptive White Point Extraction based on Dark Channel Prior for Automatic White Balance
Jieun Jo,Jaehyun Im,Jinbeum Jang,Yoonjong Yoo,Joonki Paik 대한전자공학회 2016 IEIE Transactions on Smart Processing & Computing Vol.5 No.6
This paper presents a novel automatic white balance (AWB) algorithm for consumer imaging devices. While existing AWB methods require reference white patches to correct color, the proposed method performs the AWB function using only an input image in two steps: i) white point detection, and ii) color constancy gain computation. Based on the dark channel prior assumption, a white point or region can be accurately extracted, because the intensity of a sufficiently bright achromatic region is higher than that of other regions in all color channels. In order to finally correct the color, the proposed method computes color constancy gain values based on the Y component in the XYZ color space. Experimental results show that the proposed method gives better color-corrected images than recent existing methods. Moreover, the proposed method is suitable for real-time implementation, since it does not need a frame memory for iterative optimization. As a result, it can be applied to various consumer imaging devices, including mobile phone cameras, compact digital cameras, and computational cameras with coded color.