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다중경로 페이딩 채널에서 다중 반송파 부호분할 다중접속(MC - CDMA) 방식의 역방향 링크 비트 오율(BER) 성능
김봉희,이황수 에스케이텔레콤 (주) 1997 Telecommunications Review Vol.7 No.2
본 논문에서는 최근 무선 개인통신 및 무선 멀티미디어 통신 시스템용으로 연구되고 있는 다중 반송파 부호분할 다중접속(MC-CDMA) 방식의 역방향 링크의 비트 오율(BER) 성능을 분석하였다. 이 새로운 다중접속 기술은 크게 , MCCDMA, 다중 반송파 직접 확산 CDMA(MC DS-CDMA), 다중 톤 CDMA(MT-CDMA)의 세가지로 구분할 수 있다. MC-CDMA는 주파수 영역으로 동일한 데이터를 전송하고, MC DS-CDMA는 확산한 정보 비트를 직교 주파수 다중화(OFDM) 방식으로 전송하며, MT-CDMA는 각 부채널을 독립적으로 확산하여 전송하는 방식이다. CDMA 시스템의 경우간섭에 의해 시스템 성능이 결정되기 때문에 본 논문에서는 시스템 성능을 높이기 위하여 역방향 링크에서 간섭 제거 알고리즘을 적용하여 모의실험을 하였다. 즉, 다른 사용자 코드와 직교가 되도록 하는 적응 필터(adpative filter)를 적용하여간섭을 제거하였다. 그리고, 다중경로 페이딩 채널 환경에서 다중 사용자 BER 성능을 구하였다.
UV-A 조사에 의한 Phenothiazines의 돌연변이원성 비교 연구
김봉희,박영아 한국식품위생안전성학회 1994 한국식품위생안전성학회지 Vol.9 No.1
The mutagenic activity of four phenothiazine derivatives such as chlorpromazine, perphenazine, trifluoperazine and thioridazine in conjunction with UV-A irradiation or not based on the Ames plate incorporation test in the presence and absence of liver microsomal enzyme(S9 fraction). None of these compounds and their photo-excited were detected as mutagen in the Salmonella microsome assay with TA 98 and TA 100.
김봉희,Kim Bong-Hee 한국문헌정보학회 1992 한국문헌정보학회지 Vol.23 No.-
The opening period of Korea was the period of modernisation amidst the conflicts between conservative and progressive sections with penetration of Western powers after 1876. With the opening modernisation accompanied modernisation of education. Missionary schools established by protestant missionaries played a crucial role in educational modernisation in the period of opening. In this article, the process of educational modernisation and the ways in which the ideas of democracy and equality were taught in the earliest schools, Paejae, Ewha, Kyoungsin and Chungsin are analysed through the method of bibliographical investigation of the textbooks used by these schools. No textbook prior to 1900 was found and in general there were no textbooks such as we know today. Usually English reading material and the Bible were the main teaching materials. Teachers kept their own copies of hand-written texts which were translated versions of American textbook. Since the same teacher taught in a number of schools, they shared same curriculum. In the early period, English Bible was taught so that English and the Bible lessons were not separated but gradually history and geography were added. Teaching of Hangul, and Korean history were added to encourage the sense of national identity and patriotism. In the case of Chungsin, for biology class, pupils were sent to Che-jung-won to learn human physiology, chemistry and physics, which shows an emphasis on science education. Vocational education was carried out; in the case of Paejae, a printing workshop was set up enabling students to earn some money at the same time as learning. Also in Kyungsin, skills of woodwork and basket weaving were stressed. Ewha also held a bazaar of the work made in sewing classes. Establishment of missionary schools brought about a great contribution in modernising Korean society and the Christian spiritual education of these schools lay the foundation for building democracy in Korea.
김봉희,공경엽,Kim, Bohng-Hee,Gong, Gyung-Yub 대한세포병리학회 2002 대한세포병리학회지 Vol.13 No.2
To determine the usefulness on fine needle aspiration cytology(FNAC) of bone lesions and the complementary role of FNAC and percutaneous needle biopsy, 75 cases of FNAC taken from bone lesions were analyzed. Correlations with histopathology were possible in 47 cases, including 14 cases of simultaneous core biopsy and 33 cases of subsequent open biopsy due to inadequate aspirates. Among 75 cases, 4 cases were benign tumors and tumor-like lesion, 11 cases were malignant primary bone tumors, 17 cases were metastatic tumors, and 43 cases were nonneoplastic bone lesions. The aspirates were adequate in 35 cases(46.7%), in all of which the discrimination between benignancy and malignancy was possible. The main reason for Inadequate aspirates was due to hypocellularity. In the cases of aspiration and core biopsy simultaneously done, the diagnostic accuracy of aspiration, core biopsy, and both were 57%(8/14), 78.6%(11/14), and 92.9%(13/14), respectively. We conclude that a final diagnosis based on cytology is possible with the adequate aspirates and the clinical and radiological findings. Also we confirm the complementary role between FNAC and core biopsy in bone lesions.
김봉희,서영희 한국인간복지실천학회 2015 한국인간복지실천연구 Vol.15 No.-
본 연구는 여성장애인의 사회경제적 특성이 삶의 질에 미치는 영향을 분석해봄으로써 여성장애인의 삶의 질 향상을 위한 대안을 제시하고자 하였다. 분석결과 여성장애인의 개인특성 중에서 학력이 높을수록, 배우자와 부모, 자녀와 동거하는 경우일수록, 장애특성 중에서 장애발생원인이 후천적일수록, 장애진단시기는 연령이 적을수록, 보험이용 특성 중에서는 민간보험을 가입하지 않거나 모르는 경우일수 록, 지역국민연금에 가입한 경우일수록, 접근성 및 편의시설 특성 중에서 접근을 위해 타인 도움을 청하지 않을수록, 자가용이나 장애인콜택시 등의 교통수단을 이용할수록 여성 장애인이 인식하는 삶의 질은 증가하고 있음을 알 수 있었다. 연구결과를 바탕으로 제언하면 삶의 질 영향요인으로 사회적 낙인 및 권리침해 여부, 인식된 심리적 요인 등을 고 려할 수 있고, 여성장애인에 대한 사회적 차별과 편견에 대한 인식 개선사업이 요구되고, 각종 계단 및 전철 출입구 등에 1m짜리 봉 손잡이를 설치하여 경증장애인이 스스로 이용할 수 있도록 하는 배려가 필요하다. This study analyzed the socioeconomic characteristics of disabled woman is the impact on quality of life by looking to improve the quality of life for disabled woman tried to make a counter-offer. Analysis of the individual characteristics of disabled women living with higher literacy rates, spouse, parents, children and disability on disability characteristics can cause, the more cases Acquired the more use characteristics, private insurance, the smaller the age, disability diagnosis time is not with insurance or join the more cases, local, national pension Among the characteristics of the more cases, clicking Ease of Access and amenities not ask for help others to access, the private car transportation means such as the longer use the disabled person or call taxis Disabled woman would recognize that increasing the quality of life which could know. Factors Influencing the quality of life when a suggestion, based on the research findings into account the social stigma and psychological factors, whether perceived impairment can and women for the disabled Social discrimination and prejudice against the project is required and the various steps and subway entrance and improve their perception of the installation using a mild case for the disabled themselves the handle bars 1s m Cares to take back the needed.