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김응수 ( Eung Soo Kim ),조덕연 ( Duk Yun Cho ),이유정 ( You Jung Lee ) 한국감성과학회 1998 춘계학술대회 Vol.1998 No.-
본 논문에서는 복잡한 생체 전기신호 및 자연계에서 획득될 수 있는 각종의 비선형 신호들을 효율 좋게 분석할 수 있는 시뮬레이터의 개발에 대하여 지금까지 연구된 내용에 대하여 기술한다.
심한 변형을 보이는 감염성 고관절에 시행한 인공 고관절 전치환술
이중명(Joong Myung Lee),조덕연(Duk Yun Cho),김선구(Seon Ku Kim) 대한고관절학회 1999 Hip and Pelvis Vol.11 No.1
A retrospective study was performed on the clinical and radiographic results of total hip arthroplasty in fifty-six patients(fifty-seven hips) who had had severely deformed hips due to the sequela of infectious arthritis from December 1987 till March 1997. The primary diagnosis was tuberculous sequela for 44 hips and pyogenic for 13 hips. We performed total hip arthroplasty with diffuse soft tissue release for the maximum correction of severely deformed hip. Leg length shortening was improved from an average 3.8cm(range, 1.5-8.5cm) to 0.4cm(range, 0-2cm) compared with the contralateral side. According to modified Merle dAubigne and Postel scoring, pain was improved from an average 2.2 to 5.2. The movement of hip was improved from an average 1.8 to 5.2. The ability to walk was improved from an average 2;4 to 5.4. Tuberculosis was reactivated after surgery in 2 hips. Femoral nerve palsy occurred in 3 hips, but recovered completely after a postoperative 3 to 6 months. In 1 hip of tuberculous arthritis, which had a circulation disturbance preoperatively, below knee amputation was performed due to the aggravation disturbance of the circulation after surgery. Radiographically, no hip showed definite loosening, and 1 hip was revised for a huge focal osteolysis in the femoral side and severe wear in the acetabular one. We believe that total hip arthroplasty in combination with diffuse soft tissue release and good rehabilitation program for sequela of infectious arthritis can satisfactorily improve the patients pain and function.
청각자극에 의한 쾌/불쾌 감성상태의 뇌파에 대한 바이스펙트럼 분석
김응수 ( Eung Soo Kim ),조덕연 ( Duk Yun Cho ),이유정 ( You Jung Lee ),류창수 ( Chang Su Ryu ) 한국감성과학회 1998 춘계학술대회 Vol.1998 No.-
청각자극에 의한 쾌/불쾌 감성상태의 특징을 구별하기 위하여 21채널의 측정된 뇌파신호를 이용하였다. 이를 위하여 비선형 분석방법인 바이스펙트럼 분석을 도입하였으며 청각신호에 잘 반응하는 T3, T4채널에 대하여 조사하였다. 쾌한 감성 상태에서는 비슷한 주파수 쌍의 상호작용이 큼을 알 수 있었다.