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수정소성힌지해석을 이용한 강접합 골조와 반당접합 골조의 비교
손성용,이상섭,문태섭,Son, Seong Yong,Lee, Sang Sup,Moon, Tae Sup 한국강구조학회 2001 韓國鋼構造學會 論文集 Vol.13 No.5
철골조의 비탄성 거동을 해석하는데 있어 많은 고차해석법이 소개되고 있다. 이 해석법들은 부재의 불완전성과 잔류응력과 같은 재료적인 비선형성 그리고 기하학적 비선형성에 의한 2차 효과를 직접 해석과정에 반영하여 골조의 거동을 좀더 정확히 예측할 수 있다. 이 가운데 비교적 간편하면서도 정확성이 높은 수정소성힌지 해석법을 도입하고 반강접합부의 모델링을 위해 이미 개발하여 제안한 로그 모델을 적용 해석프로그램(RPH-2DF)을 작성하였다. 이 프로그램의 검증을 위해 두께 중복형 접합부를 갖는 골조실험 결과와 해석 결과를 비교하였다. 또한 강접 골조의 거동과 반강 접합부를 갖는 골조의 거동 차이를 규명하기 위해 MIDAS-GEN v4.2.2로 설계된 10층 가새 골조를 대상으로 RPH-2DF를 이용한 해석결과와 비교하였다. A refined method of analysis which is called the Advanced Analysis has been introduced This method is to consider the intial member imperfection residual stress and second-order effects so as to estimate the overall behavior of steel frame accurately Based on the refined plastic hinge method that is more suitable and practical in design practice. the program RPH-2DF is coded using the log model which represents the moment-rotation relationship of connection. The validity of this program is examined by frame test data. Finally to investigate the difference between behaviors of rigid and semi-rigid frame. the 10-story frame analysis results designed by MIDAS-GEN v4.2.2 are compared with the results by RPH-2DF.
포먼트 이동과 스펙트럼 기울기의 변환을 이용한 음색 변환
손성용,한민수,Son Song-Young,Hahn Min-Soo 대한음성학회 2003 말소리 Vol.45 No.-
The purpose of voice color conversion is to change the speaker identity perceived from the speech signal. In this paper, we propose a new voice color conversion algorithm through the formant shifting and the spectrum-tilt modification in the frequency domain. The basic idea of this technique is to convert the positions of source formants into those of target speaker's formants through interpolation and decimation and to modify the spectrum-tilt by utilizing the information of both speakers' spectrum envelops. The LPC spectrum is adopted to evaluate the position of formant and the information of spectrum-tilt. Our algorithm enables us to convert the speaker identity rather successfully while maintaining good speech quality, since it modifies speech waveforms directly in the frequency domain.
만성질환 관리를 위한 PDA폰 기반 이동형 방문건강관리 시스템 개발
손성용,황원숙,이양희,김창섭,임채승,박길홍 한국가정간호학회 2007 가정간호학회지 Vol.14 No.1
Purpose: The rapid change to an aging society generates an increase in the incidence of chronic diseases. Many chronic patients have been facing their illnesses without enough preparation. In order to solve these problems, we designed and tested a public healthcare service based on ubiquitous technology. Method: Telemedicine has emerged as new medical care system of chronic disease. However, public potential of its technology is difficult to know under current traditional health care system. In this work, we developed a Personal Digital Access (PDA) phone based healthcare system by trained visiting nurses for elderly patients. A field test was performed by SeongBuk Public Health Center in Seoul, Republic of Korea (ROK). Result: Surveys were generated to assess the effects of this system compared to conventional public health system. Findings of trials demonstrate that healthcare coordination enhanced by PDA phone technology is satisfactory to the patients and nurses compared to previous one because prompt responses arouse their recognition of health. Conclusion: Ubiquitous healthcare system applied to public health service proved to be efficient and time-saving to monitor and control the chronic illnesses of large population.