http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
운동선수들의 전방십자인대 재건술 후 소도구 재활운동이 안정성, 대퇴둘레와 슬관절 근기능 발달에 미치는 영향
박유라(Yu-Ra Park),손연희(Youn-Hee Son),양승자(Seung-Ja Yang),서영환(Young-Hwan Seo) 한국발육발달학회 2017 한국발육발달학회지 Vol.25 No.2
The purpose of this study was to investigate the effects of an 8-week rehabilitation exercise program on ex - athletes (n=5) who underwent anterior cruciate ligament reconstruction. The following conclusions were drawn from the results of the changes in stability(equilibrium), femoral circumference, and knee strength after exercise under the same conditions. The change in stability(equilibrium) was significantly increased after the experiment and was statistically significant (p<.05). Changes in the femoral circumference were statistically significant(p<.05). The change of muscle strength(left) of the knee joint was significantly increased after the experiment but not statistically significant, and the muscle strength(right) was significantly increased after the experiment(p<.01). Based on the conclusions presented above, this study showed that rehabilitation exercise program using small tools had a positive effect on stability(balance), femoral circumference, and femoral muscle strength(right). Stability(equilibrium) appears to be gradually stabilizing the knee joint through rehabilitation, and I think that the circumference of the femur will return to the normal circumference if it is continuously rehabilitated. The changes in the femoral muscular strength(left) were significantly increased, but not statistically significant, but both knees seemed to have a positive effect of balanced femoral muscle development. Therefore, if a long-term rehabilitation exercise program using props is used, it will help recovery of anterior cruciate ligament injured patients by improving their muscular function. In future research, rehabilitation exercises using props should be studied from various perspectives.
박유신(Yu-Sin Park),서융호(Yung-Ho Seo),윤용인(Yong-In Yun),권준식(Jun-Sik Kwon),최종수(Jong-Soo Choi) 대한전자공학회 2008 電子工學會論文誌-SP (Signal processing) Vol.45 No.6
멀티미디어 기술과 콘텐츠의 발달로 3차원 데이터의 사용 범위가 넓어지고, 이를 보다 효율적으로 관리하고 검색하기 위한 시스템이 필요하다. 본 논문은 효율적인 3차원 모델의 형상 기반 검색을 하기위해 모델의 특징을 추출하는 단면 형상 영상 방법을 제안한다. 3차원 모델의 특징 기술자는 모델에 대한 위치, 회전, 크기에 불변해야 하므로 모델을 정규화 시키는 작업이 필요하다. 본 논문에서는 주성분 분석 방법을 이용하여 정규화하였다. 제안한 알고리즘은 주성분 분석을 통해 각 축의 방향 성분을 찾고, 각 축에 직교하는 n 개의 평면을 생성한다. 이 평면은 각 축의 방향과 직교 성분을 갖으며 단면 형상 영상을 구하는데 사용된다. 단면 형상 영상은 3차원 모델과 각 평면이 교차해서 생기는 2차원 평면 영상이다. 제안한 3차원 모델의 특징 기술자는 단면 형상 영상의 중심점과 2차원 형상(shape)을 이루는 직선까지의 유클리디안 거리(distance)값들의 분포도이다. 검색 성능 평가는 MPEG-7에서 제시한 표준 평가 방법인 표준화된 수정 검색 순위의 평균(ANMRR)을 이용하였고, 제안한 방법의 우수성을 실험 결과를 통해 입증하였다. Applications of 3D data increase with advancement of multimedia technique and contents, and it is necessary to manage and to retrieve for 3D data efficiently. In this paper, we propose a new method using the sliced shape which extracts efficiently a feature description for shape-based retrieval of 3D models. Since the feature descriptor of 3D model should be invariant to translation, rotation and scale for its model, normalization of models requires for 3D model retrieval system. This paper uses principal component analysis(PCA) method in order to normalize all the models. The proposed algorithm finds a direction of each axis by the PCA and creates orthogonal n planes in each axis. These planes are orthogonalized with each axis, and are used to extract sliced shape image. Sliced shape image is the 2D plane created by intersecting at between 3D model and these planes. The proposed feature descriptor is a distribution of Euclidean distances from center point of sliced shape image to its outline. A performed evaluation is used for average of the normalized modified retrieval rank(ANMRR) with a standard evaluation from MPEG-7. In our experimental results, we demonstrate that the proposed method is an efficient 3D model retrieval.