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초등학교에서의 성공적인 장애아 통합교육을 위한 일반교사 교육의 방향 - 통합교육에 대한 특수교사와 일반교사들의 인식에 근거하여 -
이대식(Dae Sik Lee) 한국초등교육학회 2002 초등교육연구 Vol.15 No.1
The purpose of the study was to suggest directions of general education teacher training for successful inclusion in elementary schools, based on teachers` perception on inclusion. Two study questions guided the study: (a) how did teachers perceive current inclusion practice? and (b) what are the implications of teachers` perception on teacher training programs? In general, teachers positively perceived current inclusion practices. They also indicated that collaboration between general education teacher and special education teacher as a key factor of successful inclusion. For teacher preparation training for inclusion in general education classrooms, several guidelines were suggested. First, teachers need to be trained focused on practice in real settings and skills and knowledge in developing individualized education program in each phase of inclusion in general education settings. Second, principals and senior teachers must be trained to show leadership by facilitating collaboration between general education and special education teacher groups. Third, general education teachers must have opportunities to explore different aspects of inclusion according to types of disabilities and individual education needs.
주파수 도약 통신위성 중계기의 다상 DFT 필터뱅크 과도기 응답 분석
이대일(Daeil Lee),주재관(Jaikwan Joo) 한국항공우주학회 2014 韓國航空宇宙學會誌 Vol.42 No.7
통신위성 중계기에서 효과적인 다중채널 처리를 위하여 여러 가지 필터뱅크들이 사용되어져 왔다. 특히 구현의 간단함으로 인하여 대역폭이 일정한 복수의 다중채널을 다루는 경우 다상 DFT 필터뱅크가 광법위하게 사용되어져 왔다. 하지만 주파수도약 통신위성 중계기에서 Polyphase DFT 필터뱅크를 사용하여 다중채널 처리를 할 경우 주파수 도약 홉과 홉 사이에서 발생하는 비정상적인 과도기 응답으로 인하여 다상 DFT 필터뱅크의 사용에 있어 제약이 발생할 수 밖에 없다. 본 논문에서는 주파수 도약 환경에서의 비정상적인 다상 DFT 필터뱅크의 과도기 응답을 분석하고 해당 문제를 해결 할 수 있는 방법을 제시하며 모의실험을 통하여 제안된 방법의 효율성을 보인다. Filterbanks have been widely used in the field of multi-channel signal processing for their simple efficient implementation architectures. Especially, the polyphase DFT(Discrete Fourier Transform) filterbank is the most preferred filterbank for the uniform spaced multi-channel processing due to its simplicity. In frequency hopped communication systems, however, the use of the polyphase DFT filterbank is limited due to its undesirable transient response from hop-to-hop transitions. In this paper, the transient response of polyphase DFT filterbanks in the hop-to-hop transition was analyzed, and the efficient methods to overcome such a problem was proposed. Simulation results showed that the proposed schemes could resolve this issue efficiently.
이대회(Lee, Dae-Hee),김성희(Kim, Sung-Hee) SH도시연구원 2013 주택도시연구 Vol.3 No.1
The objectives of this purpose are to establish a maintenance system for residents of public rental housing and provide them with quality maintenance service by investigating the actual state of facilities used by them. A questionnaire survey was conducted on residents of 12 public rental housing complex located in Seoul, Korea, and 1,002 valid samples were secured. The implications derived from the questionnaire survey are as follows: First, in order to delay the deterioration of public rental housing and maintain comfortable residential environment, residents and management offices should enhance regular inspection activities of facilities as an active subject. Second, it is necessary to enable residents to make a decision about repairing facilities autonomously within the reasonable scope that facilities are not damaged by introducing collective repair services residents want. Third, it is necessary to establish maintenance and repair system focused not on repair companies but on residents in the delivery system of repair services.