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한국어와 일본어의 음성 인식을 위한 알고리즘 개발에 관한 연구
이성화,김병래,Lee, Sung-Hwa,Kim, Hyung-Lae 한국전기전자학회 1998 전기전자학회논문지 Vol.2 No.1
In this thesis, experiment have performed with the speaker recognition using multilayer feedforward neural network(MFNN) model using Korean and Japanese digits . The 5 adult males and 5 adult females pronounciate form 0 to 9 digits of Korean, Japanese 7 times. And then, they are extracted characteristics coefficient through Pitch deletion algorithm, LPC analysis, and LPC Cepstral analysis to generate input pattern of MFNN. 5 times among them are used to train a neural network, and 2 times is used to measure the performance of neural network. Both Korean and Japanese, Pitch coefficients is about 4%t more enhanced than LPC or LPC Cepstral coefficients. 본 연구에서는 다층 순방향 신경망(MFNN) 모델을 이용해서 한국어 및 일본어 숫자음 인식 실험을 수행하였다. 각각 5명의 한국인 남성 및 여성 화자가 0부터 9까지의 10개의 숫자를 7회 발음토록 하였고, 그중 2회 발음한 것을 인식 실험에 사용하였다. 이들 음성 데이터로부터 각각 추출된 피치 계수, 선형 예측 계수, 선형 예측 켑스트럼 계수들을 신경망의 입력 패턴으로 입력시켜 인식 성능을 측정하였다. 한국어를 사용한 실험과 일본어를 사용한 실험 모두에서 피치 계수를 사용하는 것이 다른 계수를 사용하는 것보다 약 4% 정도 우수한 성능을 나타내었다.
한국산업기술진흥원(KAIT)기술경영우수논문 공모전 수상작 : R&D투자가 경영성과에 미치는 영향; 기술사업화 능력의 매개효과를 중심으로
이성화 ( Sung Hwa Lee ),조근태 ( Kuen Tae Cho ) 기술경영경제학회 2012 Journal of Technology Innovation Vol.20 No.1
R&D연구소를 보유하고 있는 우리나라 민간기업 118개를 분석한 결과, R&D투자는 기술사업화성과, 매출액증가율 및 영업이익증가율 등 경영성과에 모두 긍정적인(+)영향을 미치는 것을 확인하였고, 기술사업화 능력이 R&D투자와 경영성과간의 관계에서 분석한 결과, 기술전략기획능력, 기술프로세스능력, 기술조직능력인 광의의 기술사업화 능력이 경영성과에 부분적으로 매개효과를 나타났으며, 제조능력과 마케팅능력인 협의의 기술사업화 능력은 경영성과에 모두 매개효과가 있는 것으로 나타났다. 따라서 R&D투자가 경영성과를 달성하는데 필요한 요인이지만, 기술사업화 능력도 경영성과에 매개작용을 하므로 기술사업화 능력을 강화하는 것이 필요함을 시사하고 있다. The purpose of this study is to examine the effect on R&D investment and technology commercialization capabilities on business performance of 118 Korean firms which has R&D center. In particular, this study tried to define technology commercialization and technology commercialization capabilities for the board and narrow perspective, and investigates the role of technology commercialization capabilities in linking R&D investment and business performance in terms of a financial performance as the growing rate of sales, the growing rate of operating income to sales and non-financial performance as the ratio of technology commercialization. The results of this study are as follows. First, the findings of the research indicated that there was a significant positive relationship between R&D investment and business performance as financial and non-financial. Second, the study found that board technology commercialization capability as technology strategic planning, technology process, and technology organization has the mediating effect to R&D investment on business performance as the ratio of technology commercialization. Third, the study found that narrow technology commercialization capability as manufacturing and marketing play a mediating role in terms of business performance as financial and non-financial.
상부위장관질환의 조직염증 정도와 Helicobacter pylori 감염에 따른 혈청 가스트린치의 변화
이성화(Sung Hwa Lee),정을조(Eul Jo Chung),김수진(Soo Jin Kim),강석진(Seok Jin Kang),정기욱(Kee Wook Jung),이경원(Gyeong Won Lee),하종(Jong Ha),조활석(Hwal Suk Cho),정운태(Woon Tae Jung),조중현(Jung Hyeun Cho) 대한소화기학회 2000 대한소화기학회지 Vol.36 No.3
Background/Aims : It is well known that serum gastrin titers in patients infected with Helicobacter pylori (H. pylori) are much higher than those in uninfected asymptomatic controls. The aim of this study was to investigate the relationship between serum gastrin titers and histologic scorings according to disease entities in Koreans. Methods: Ninty-nine patients infected with H. pylori and 35 uninfected patients were enrolled in this study and their serum gastrin titers were measured by 125I radioim- munoassay. The H. pylori infection was determined by rapid urease test and histology. Results: No significant differences in serum gastrin titers were noted between the 99 patients infected with H. pylori and the 35 uninfected patients. Serum gastrin titers in the all patients infected with H. pylori were significantly higher in the fundus of high chronic lymphocyte infiltration score than in the fundus of low chronic lymphocyte infiltration score (55.1±45.8 pg/mL vs 22.9±15.0 pg/mL, p<0.05). In addition, serum gastrin titers in the uninfected patients were significantly higher in the fundus of high chronic lymphocyte infiltration score than in the fundus of low chronic lymphocyte infiltration score. Conclusions: Serum gastrin titers were significantly high in high histologic score group. However, they were not significantly increased by H. pylori infection or gastroduodenal disease entities. Therefore, there is no direct correlation between H. pylori infection and hypergastrinemia. (Kor J Gastroenterol 2000;36:326 - 335)
이성화 ( Sung-hwa Lee ),강진순 ( Jin-soon Kang ),이경아 ( Kyong-ah Lee ),김선애 ( Sun-ae Kim ) 한국미용예술경영학회 2009 미용예술경영연구 Vol.3 No.1
Hair style today is being recognizing as an essential element of social life, and it is sublimed to be a artistic trend. So, this study is designed to examine its expression appearance on the basis of principle of hair style, even to give some foundational material for further studies stretching out to make it sort of artistic trend. Accordingly, for my theoretical background, I in many ways referred to previous studies & related documents and then made portfolio work through internet search with domestic and/or international magazines, and finally classified all the sources by images to make them as photo materials to analyse an art trend that reflected in hair style. Therefore, an artiste trend & hair style here on this paper is interdependent and correlational to support each other, on which we will know a relation between cultural elements behind social phenomena and its variable application to hair style. Finally I hope many other researchers to get a clue in relating studies.