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Kang, DongYeon,Cheon, SangMyung,Son, MinJi,Sung, HyeRyun,Lee, HyeYoung 대한물리치료학회 2019 대한물리치료학회지 Vol.31 No.2
Purpose: This study examined the effects of sagittal spinopelvic alignment on the clinical parameters, motor symptoms, and respiratory function in patients with mild to moderate Parkinson's disease (PD). Methods: This study was a prospective assessment of treated patients (n=28, Hoehn and Yahr (H&Y) stage 2-3) in a PD center. Twenty-eight subjects ($68.5{\pm}5.7yrs$) participated in this study. The clinical and demographic parameters, including age, sex, symptoms duration, treatment duration, and H&Y stage, were collected. Kinematic analysis was conducted in the upright standing posture with a motion capture system. A pulmonary function test (PFT) was performed in the sitting position using a spirometer. The motor symptoms were assessed on part III of the movement disorder society sponsored version of the unified Parkinson's disease rating scale (MDS-UPDRS). SPSS 18.0 was used to analyze the collected data. Results: The exceeding 12 degrees group of the lower trunk showed significantly higher on the clinical parameters than the below 12 degrees group. In addition, the exceeding 12 degrees group of the lower trunk showed a significantly lower forced expiratory volume at one second (FEV1) / forced vital capacity (FVC) (%) and 25-75% forced mid-expiratory flow (FEF) (L/s) than in the below group. On the other hand, there was no difference in the upper trunk and the cervical pelvis between the groups. Conclusion: These findings suggest that the sagittal balance in the lower trunk is related to the clinical parameters and respiratory function, but not the motor symptoms in patients with mild to moderate PD.
( Dongyeon Kang ),( Sangmyung Cheon ),( Minji Son ),( Hyeryun Sung ),( Hyeyoung Lee ) 대한물리치료학회 2019 대한물리치료학회지 Vol.31 No.2
Purpose: This study examined the effects of sagittal spinopelvic alignment on the clinical parameters, motor symptoms, and respiratory function in patients with mild to moderate Parkinson’s disease (PD). Methods: This study was a prospective assessment of treated patients (n=28, Hoehn and Yahr (H&Y) stage 2-3) in a PD center. Twenty-eight subjects (68.5±5.7 yrs) participated in this study. The clinical and demographic parameters, including age, sex, symptoms duration, treatment duration, and H&Y stage, were collected. Kinematic analysis was conducted in the upright standing posture with a motion capture system. A pulmonary function test (PFT) was performed in the sitting position using a spirometer. The motor symptoms were assessed on part III of the movement disorder society sponsored version of the unified Parkinson’s disease rating scale (MDS-UPDRS). SPSS 18.0 was used to analyze the collected data. Results: The exceeding 12 degrees group of the lower trunk showed significantly higher on the clinical parameters than the below 12 degrees group. In addition, the exceeding 12 degrees group of the lower trunk showed a significantly lower forced expiratory volume at one second (FEV1) / forced vital capacity (FVC) (%) and 25-75% forced mid-expiratory flow (FEF) (L/s) than in the below group. On the other hand, there was no difference in the upper trunk and the cervical pelvis between the groups. Conclusion: These findings suggest that the sagittal balance in the lower trunk is related to the clinical parameters and respiratory function, but not the motor symptoms in patients with mild to moderate PD.
강동연 ( Dongyeon Kang ) 한국정보처리학회 2019 한국정보처리학회 학술대회논문집 Vol.26 No.1
In the case of blur processing, it is common to use a tool such as Photoshop to perform processing manually. However, it can be considered very efficient if the blur is processed at one time in the object detection process. Based on this point, we can use the object detection model to blur the objects during the process. The object detection is performed by using the YOLO [3] model. If such blur processing is used, it may be additionally applied to streaming data of video or image.
강동연 ( Dongyeon Kang ) 한국정보처리학회 2019 한국정보처리학회 학술대회논문집 Vol.26 No.1
Object detection is applied in various field. Autonomous driving, surveillance, OCR(optical character recognition) and aerial image etc. We will look at the algorithms that are using to object detect. These algorithms are divided into two methods. The one is R-CNN algorithms [2], [5], [6] which based on region proposal. The other is YOLO [7] and SSD [8] which are one stage object detector based on regression/classification.
Meridian Electrical Potential Response to Acupuncture Stimulation Between Operator and Subject
이용흠,Dongyeon Kang,Taeyoon Son,Soobyung Kim,정병조 사단법인약침학회 2010 Journal of Acupuncture & Meridian Studies Vol.3 No.4
The human body has a symmetric structure and maintains a physiological balance through the harmony of yin and yang. One of the fundamental principles of acupuncture is that unbalanced or abnormal bioenergetic conditions on the left and right meridians may be restored to a balanced, normal condition by acupuncture therapy. In this study, the electrical potential along the stomach meridian was measured to investigate the bioenergy consensus between the operator and subject during acupuncture stimulation, and the acupuncture response on opposite meridians was investigated by comparing the electric potential on the left and right stomach meridian during stimulation of the left side stomach meridian-36. When meridian electrical potential was simultaneously measured in both the operator and subject, opposite polarities were observed, which might indicate the transfer of bioenergy between operator and subject. In addition, the meridian electrical potentials of the subjects’ left and right stomach meridians were also always of opposite polarity and presented three different signal patterns, which might have represented the condition of the associated meridian.
김동연(Dongyeon Kim),손민정(Minjung Son),이윤진(Yunjin Lee),강형우(Henry Kang),이승용(Seungyong Lee) 한국정보과학회 2008 한국정보과학회 학술발표논문집 Vol.35 No.1
본 논문에서는 영상의 중요한 특징을 강조하는 점의 분포를 가지는 자동화된 점묘화(stippling) 제작방법을 제시한다. 예술가의 점묘화 일러스트 작품을 살펴보면 영상의 특징을 강조하는 방향성이 있는 점들을 사용해서 회화적인 느낌을 살림과 동시에 사물의 형태를 좀 더 명백히 파악할 수 있게 해준다. 하지만 컴퓨터 그래픽스 분야에서 연구된 기존 점묘화 기법 알고리즘은 입력 영상의 특징적인 형태를 고려하지 않고 색조에 따른 점의 밀도 변화만으로 사물을 표현하기 때문에 사물의 형태가 제대로 드러나지 않는 단점이 있다. 본 방법에서는 점의 분포가 대상의 형태를 반영하며 분포되게 하는 알고리즘을 적용하여 사물의 특징적인 형태를 강조한다. 이를 위해 영상의 특징선으로부터 추출한 특징 흐름(feature flow)을 따라 점을 배치시키는 방법을 사용한다. 그리고 입력 영상의 색조(tone)를 점묘화에 반영하기 위해 점의 크기가 입력 영상의 색조에 따라 자동으로 결정되도록 한다.
이동연(Dongyeon Lee),고성진(Seongjin Ko),강세식(Sesik Kang),김창수(Changsoo Kim),김동현(Donghyun Kim),김정훈(Junghoon Kim) 한국방사선학회 2013 한국방사선학회 논문지 Vol.7 No.4
전신방사선조사는 소아백혈병의 치료 방법 중 하나인 조혈모세포이식의 전처치로 이용되고 있으며, 현재 조직보상체를 사용하여 치료를 시행하고 있다. 그러나 조직보상체의 조건에 따라 인체 내부 장기에 미치는 영향을 직접 평가하는 것은 어려움이 있다. 이에 본 연구는 수학적 모의피폭체를 사용하여 방사선의 에너지와 선원과 환자와의 거리(source surface distance, SSD), 조직보상체와 환자와의 거리 변화에 따라 인체 장기의 선량을 평가하였다. 그 결과, 표면선량은 에너지 4 MV, SSD 280 ㎝, 조직보상체와 환자와의 거리 30 ㎝일 때 5.84 G/min 으로 가장 높은 수치를 나타내었다. 또한 조직보상체와 환자와의 거리가 30 ㎝ 이하였을 때 TBI에서 가장 이상적인 선량분포를 나타냄을 알 수 있었다. Total body irradiation in the treatment of childhood leukemia, which is one of the pre-treatment with stem cell transplantation is being used, the current organization using compensators are treated. However, under the terms of the compensator organization long-term impact on the human body, it is difficult to assess directly. In this study, we use the mathematical simulation of radiation exposures body energy and the distance to the crew and the patient (source surface distance, SSD), and patients with tissue compensators change of the distance along the body of the organ doses were evaluated. As a result, the surface dose of energy 4 MV, SSD 280 ㎝, tissue compensators and the patient when the distance 30 ㎝ 5.84 G / min showed the highest levels. In addition, patients with tissue compensators and the distance apart when 30 ㎝ TBI represents the ideal dose distribution was found.