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운동종목별(運動種目別) 선수(選手)의 심전도시간간격(心電圖時間間隔), 파고(波高) 및 벡터의 비교(比較)
권기영,이원정,황수관,주영은,Kwon, Ki-Young,Lee, Won-Jung,Hwang, Soo-Kwan,Choo, Young-Eun 대한생리학회 1985 대한생리학회지 Vol.19 No.1
운동종목별(運動種目別) 선수(選手)들의 심기능(心機能)을 비교(比較)하기 위하며 운동경력(運動經歷)이 3년이상(年以上)이 된 고등학교(高等學校)의 투척(投擲)(7명), 도약(跳躍)(11명), 단거리(短距離)(8명), 장거리(長距離)(14명), 권투(拳鬪)(7명), 배구(排球)(8명) 및 야구(野球)(9명) 선수(選手)와 비선수(非選手)(19명)들의 안정시(安靜時)심전도상(心電圖上)에 나타난 시간간격(時間間隔), 파고(波高) 및 vector를 비교(比較) 분석(分析)하였다. 안정시(安靜時)의 R-R(간격)間隔은 각종목별(各種目別) 선수(選手)들은$0.96{\sim}1.09$ 초(秒)로 비선수군(非選手群)의 0.78초(秒)에 비(比)해 유의(有意)한 서맥(徐脈)을 보여주었다. R-R간격(間隔)은 P-R, Q-T 및 T-P간격(間隔)의 합(合)으르 나타나는데, P-R 및 Q-T간격(間隔)은 각(各 선수군(選手群)과 비선수군간(非選手群間)에 차이(差異)가 없었으나 T-P간격(間隔)은 도약(跳躍), 단거리(短距離), 장거리(長距離) 및 권투선수(拳鬪選手)들에서 비선수군(非選手群)보다 유의(有意)하게 높았다. R-R간격(間隔)은 T-P 및 Q-T간격(間隔)과 유의(有意)한 상관관계(相關關係)가 있었으나 P-R 및 QRS간격(間隔)과는 상관관계(相關關係)가 없었다. 심전도(心電圖)의 파고(波高)를 비교(比較)해 보면 lead $V_5$에서의 P파고(波高)$(Pv_5)$는 비선수군(非選手群)에 비(比)해서 각종목(各種目) 선수군(選手群)이 전반적(全般的)으로 낮은 경향(傾向)을 보여주었고, 특(特)히 투척(投擲) 및 도약선수군(跳躍選手群)은 유의(有意)하게 낮았다. T파고(波高)$(Tv_5)$는 투척선수군(投擲選手群)이 비선수군(非選手群)보다 유의(有意)하게 낮았으나 다른 선수군(選手群)들은 차이(差異)가 없었다. R파고(波高)$(Rv_5)$는 장거리선수군(長距離選手群)을 제외(除外)한 다른 종목선수(種目選手)들과 비선수(非選手)사이에 차이(差異)가 없었다. 장거리선수군(長距離選手群)의 $(Rv_5)$파고(波高)는 비선수(非選手)뿐만 아니라 다른 종목선수군(種目選手群)보다도 유의(有意)하게 높았다. Lead $V_1$에서의 S파고(波高)$(Sv_1)$는 선수군(選手群)과 비선수군(非選手群)사이에 차이(差異)가 없었다. $Rv_5$와 $Sv_1$파고(波高)의 합(合)은 장거리선수군(長距離選手群)만이 다른 종목선수군(種目選手群)들이나 비선수군(非選手群)보다 유의(有意)하게 높았으며 다른 선수군(選手群)들은 비선수군(非選手群)과 차이(差異)가 없었다. 심전도(心電圖)의 vector를 비교(比較)해 보면 P, QRS, T축(軸)의 각도(角度)는 frontal 및 horizontal plane 상(上)에서 각선수군(各選手群)과 비선수군(非選手群)사이에 차이(差異)가 없었다. P vector의 길이는 각선수군(各選手群)이 비선수(非選手)보다 낮은 경향(傾向) 나타냈으며, 특(特)히 horizontal plane에서 투척(投擲), 도약(跳躍), 단거리(短距離) 및 야구선수(野球選手)들이 비선수군(非選手群)보다 유의(有意)하게 낮았다. QRS와 T vector의 길이는 선수군(選手群)과 비선수군간(非選手群間)에 차이(差異)가 없었고, 야구선수(野球選手)만이 frontal plane에서 QRS vector의 길이가 비선수군(非選手群)보다 높았다. 이상(以上)의 결과(結果)를 종합(綜合)해 보면 각종목(各種目) 운동선수군(運動選手群) 전반(全般)은 비선수(非選手)보다 유의(有意)한 서맥(徐脈)을 나타내며 이는 주로 T-P 간격(間隔)이 길기 때문이다. 파고(波高)의 높이와 vector를 비교(比較)해 볼때 각종목( In order to compare the cardiac function of various groups of athletes, the resting electrocardiographic time intervals, amplitudes and vectors were analyzed in high school athletes of throwing(n=7), jumping(n=11), short track(n=8), long track(n=14), boxing(n=7), volleyball(n=8) and baseball(n=9), and nonathletic control students(n= 19). All athletic groups showed a significantly longer R-R interval(0.96-1.09 sec) than the controls (0.78 sec). Therefore, the heart rate was significantly slower in atheletes than in the control, but was not different among the different athletic groups. R-R interval is the sum of intervals of P-R, 0-T and T-P: P-R and Q-T intervals showed no difference among the control and athletic groups, but T-P interval in the jump, short track, long track and boxing groups was significantly higher than the control. R-B interval showed a significant correlation with T-P or Q-T intervals but no correlation with P-R or QRS complex. Comparing the amplitude of electrocardiographic waves, the athletic groups showed a lower trend in P wave than the controls. T wave in lead $V_5\;(Tv_5)$ was similar in the athletic and control groups. The long track group showed a significantly higher waves of $Rv_5$, $Sv_1$, and the sum of $Rv_5$ and $Sv_1$ than not only the controls but also the other athletic group. The angles of P, QRS, and T vector in the frontal and horizontal planes were not different among the control and all the athletic groups. Each athletic group stowed a lower trend in amplitude of P vector in the frontal plane, but in horizontal plane, throwing, jump, short track and baseball groups showed a significantly lower than the controls. The amplitude of QRS and T vector was similar in the athletic and control groups, but only the baseball group showed a significantly higher QRS vector in the frontal plane. In taken together, all the athletic groups showed a slower heart rate than the controls, mainly because of elongated T-P interval. Comparing the electrocardiographic waves and vector, the athletic groups showed lower amplitudes of P wave and P vector than the controls. Values of $Rv_5$ and $Sv_1$ strongly suggest that only the long distance runners among the various athletic groups developed a left ventricular hypertrophy.
액와접근법을 통한 제 1 늑골 절제술로 치료한 흉곽출구 증후군 - 증례보고 -
권기영,전병찬,조용운,조성래,Kwon, Ki Young,Jeon, Byung Chan,Cho, Yong Woon,Cho, Sung Rae 대한신경외과학회 2001 Journal of Korean neurosurgical society Vol.30 No.12
The authors report a case of thoracic outlet syndrome in left side. Thoracic outlet syndrome is a collective term in which symptoms and signs are due to bony and soft tissue compression of the neurovascular bundle at the thoracic outlet. It is a rare case in neurosurgical field. So we had experienced one case of thoracic outlet syndrome which was improved by transaxillary approach for resection of first rib. The clinical features, diagnostic test, radiological findings, and operative technique are presented with review of literatures.
서울시 강북구 솔밭근린공원 소나무림 답압 피해 개선사업 효과 연구
권기영,한봉호,박석철,최진우,Kwon, Ki-Young,Han, Bong-Ho,Park, Seok-Cheol,Choi, Jin-Woo 한국조경학회 2012 韓國造景學會誌 Vol.40 No.5
본 연구의 목적은 서울시 솔밭근린공원 소나무림을 대상으로 울타리 설치, 관목 및 초본식물 식재 등의 답압 피해 개선사업의 효과를 검증하는 것이다. 2005년과 2010년 현장조사를 통해 소나무 식재유형, 식재구조, 토양경도, 토양단면구조, 토양 이화학적 특성 등의 변화 상태를 분석하였다. 또한 소나무의 가지생장량과 직경생장량을 측정하여 개선사업전과 후 상태를 비교 분석하여 답압 피해지역 개선사업에 따른 효과를 고찰하였다. 식재유형 변화에서는 하층 식생이 없는 소나무림이 2005년 48.5%에서 2010년에는 6.8%로 감소하였으며, 관목 및 초본이 식재된 소나무림이 7.4%에서 46.8%로 크게 증가하였다. 식재구조 변화에서는 대부분 조사구가 하층식생이 거의 없는 소나무림에서 진달래, 철쭉꽃, 원추리, 돌단풍, 옥잠화 등 관목 및 초본식생이 넓게 피복된 소나무림으로 변화되었다. 2005년 솔밭근린공원의 토양경도는 평균 $54.8kg/cm^2$로 딱딱한 토양층이었다. 2010년 솔밭근린공원 개선사업 후 토양경도는 대부분 $4kg/cm^2$ 미만으로 식물생육에 영향이 없는 양호한 상태였다. 2005년에 토양단면구조는 답압 영향으로 인해 낙엽층이 소실되어 있었으며, 유기물층이 1.0cm로 식물이 생육하는데 적합하지 않았다. 개선사업 후 2010년에는 답압에 대한 피해가 줄어서 낙엽층이 3.0cm까지 새롭게 형성되었고, 지속적인 시비에 따라 유기물층의 깊이도 1.5~8.0cm로 증가하였다. 2005년 토양 이화학적 특성에서는 pH 5.76~6.70, 유기물 함량 7.15~10.55%, 유효인산 9.38~26.47mg/kg으로 소나무 생육 토양환경조건으로 큰 문제가 없었다. 또한 소나무 15주를 선정하여 가지생장량을 분석한 결과, 개선사업 이후 가지생장량이 점차 증가하는 경향이었다. 토양경도 등급에 따라 소나무 70주를 선정하여 직경생장량을 측정한 결과, 대부분 조사구에서 소나무가 개선사업 이후 생육이 양호해지는 것을 확인할 수 있었다. 본 연구결과를 통해 울타리 설치, 관목 및 초본식물 식재 등의 답압 피해 개선사업이 소나무 생장을 향상시키는 효과를 검증할 수 있었다. The purpose of this study is to validate the effect of improvement such measures as fence installation or planting of bush and herbaceous plants taken from Pinus densiflora forest in Solbat Neighborhood Park in Seoul, which was damaged by stamping. The study was conducted in 2005 and 2010 in order to analyze changes in planting types, planting structure of Pinus densiflora forest, soil hardness, cross-sectional structure of soil, and physicochemical characteristics of soil. It was also measured by the growth of the branches and the diameter of Pinus densiflora, comparing before and after the improvement to study the effect of restoring Pinus densiflora forest damaged by stamping. When it comes to a change in planting type, Pinus densiflora forest without underlay was reduced from 48.5% in 2005 to 6.8% in 2010. Pinus densiflora forest with bush and herbaceous plants was increased dramatically from 7.4% to 46.8%. Regarding planting structure, in most area of the subject site, Pinus densiflora forest without under layer was transformed into the one with bush and herbaceous plants including Rhododendron mucronulatum, Rhododendron schippenbachii, Hemerocallis fulva, Aceriphyllum rossii, Hosta plantaginea growing in a wide area. The soil in the Solbat Neighborhood Park was very stiff with soil hardness of $54.8kg/cm^2$ in average. After the improvement efforts made in the Park in 2010, the soil hardness was mostly less than $4kg/cm^2$, being in a good condition with little influence on the growth of plants. When it comes to the cross-sectional structure of soil, litter layer didn't exist in 2005 because of stamping and the organic matter layer was only 1.0cm thick, which provided an unfavorable condition for plant growth. However, after improvement, litter layer was formed up to 3.0cm and thickness of the organic matter layer also went up to 1.5~8.0cm in 2010 because the damage from stamping was reduced. Concerning the physicochemical characteristic of soil, in 2005 soil showed pH 5.76~6.70, organic matter content 7.15~10.55%, and available phosphorus 9.38~26.47mg/kg, having no big problems as a soil environment for growth of Pinus densiflora. 15 trees of Pinus densiflora were selected to see branch growth and it was found that the branches tended to grow better after improvement. 70 trees of Pinus densiflora from various grades of soil hardness also were selected to identify changes of diameter growth. In most cases, it was analyzed that Pinus densiflora grew better after improvement. After conducting this study, it was validated that such measures as fence installation or planting of bush and herbaceous plants to restore Pinus densiflora Forest damaged by stamping were effective in improving growth of Pinus densiflora.
권기영,기장근,조현묵,Kwon, Kee-young,Ki, Jang-geun,Cho, Hyun-mook 국제문화기술진흥원 2021 The Journal of the Convergence on Culture Technolo Vol.7 No.3
본 연구에서는 1.55um의 파장을 갖는 DFB 레이저에서 굴절률 격자와 이득 격자가 동시에 존재할 때, 오른쪽 거울 면에 반사가 일어나지 않도록 유전막 코팅을 하여 𝜌<sub>r</sub>=0 이 되도록 하였다. 𝛿L>0인 경우일 때, 발진 모드에 대하여, 발진 주파수와 발진 이득의 특성을 해석했다. 좌측 거울면의 격자 위상이 𝜋에서부터 𝜋/2 계속 감소할 때, 각 모드의 그래프 선들이 좌측으로 조금씩 이동한다. 발진 모드의 문턱 이득이 가장 낮은 경우는 𝜅L=10인 경우이고, 이때 모드 선별성은 상대적으로 낮다. 모드 선별성이 우수한 경우는 𝜅L=0.5에서부터 𝜅L=6 정도까지이고, 이 경우 주파수 안정성이 우수하다. 두 개의 벽개면을 갖는 경우와 비교하면, 한 개의 무반사면을 갖는 경우, 발진 모드의 문턱 이득이 증가하지만 모드 선별성은 2배 정도 더 우수해 진다. In this paper, when a refractive index grating and a gain grating were simultaneously present in a DFB laser having a wavelength of 1.55 ㎛, a dielectric film coating was applied so that reflection did not occur on the right mirror surface, so that 𝜌<sub>r</sub>=0. In case of 𝛿L>0, the characteristics of the oscillation frequency and oscillation gain were analyzed. When the grating phase of the left mirror surface continues to decrease from 𝜋, the graph lines of each mode gradually shift to the left. In case of 𝜅L=10, the threshold gain of the oscillation mode is the lowest. In this case, the mode selectivity is relatively low. From 𝜅L=0.5 to 𝜅L=6, the mode selectivity and the frequency stability are excellent. In the case of DFB lasers with an anti-reflection coated mirror, the threshold gain of the oscillation mode increases but the mode selectivity is about twice as excellent, compared with DFB lasers of having two cleaved facets.
손목재활 컨트롤러를 위한 마우스 가상화 소프트웨어 개발
권기영(Ki-Young Kwon),신성욱(Sung-Wook Shin),김동연(Dong-Yean Kim),정성택(Sung-Taek Chung) 대한전자공학회 2015 대한전자공학회 학술대회 Vol.2015 No.6
Generally, wrist rehabilitation is passively done by rehabilitation therapist which can lead to problems with patient motivation and engagement. Serious game is one of the way to solve these problems. It may offer intensive and repetitive rehabilitation by promote interest of patients. In this paper, we implemented virtual mouse software for wrist rehabilitation controller. It can utilize video game contents as serious game. Thus, we did not need to develop interactive contents for specific interactive controller such as kinect or wii for rehabilitation. That is can provide lower cost, higher productivity and save time for rehabilitation.
권기영(Kwon, Ki-Young) 중국문화연구학회 2018 중국문화연구 Vol.0 No.40
In pursuing China’s regional development strategy, the Chinese government is looking for a cooperative strategy for local culture. The most representative example is the cooperation development strategy of regional cultural, which is being attempted in the Ring Bohai economic circle, especially Jing-Jin-Ji area. The Ring Bohai economic circle has emerged as a key strategic base for economic development in China in the 21st century. In 2015, the Chinese government is promoting the cooperative development of ing-Jin-Ji area as a national-level strategy and the cooperation development of Regional cultural in Jing-Jin-Ji area. In accordance with the demands of the central government, governments in each region have designed policies that meet the goal of cooperation development of Regional culture in the Jing-Jin-Ji area instead of local cultural policy. And local governments have also established institutional arrangements to ensure policy sustainability. These governments have the responsibility of sharing and free exchange of cultural resources, equal preferential policies for cultural enterprises, cooperation to cultivate cultural manpower, standardization work for integrating cultural markets, joint purchase of local government for cultural services, focused on breaking administrative boundaries and regional protectionism. Of course, there is debate as to whether the cooperative development of inter-regional culture should be promoted by the central government like China and how effective it will be. The competition between Beijing and Tianjin still exists, and how the exchange of cultural resources and people is really fair, how to resolve the cultural gap between existing cities, and the regional cultural characteristics and the identity of local communities based on them And whether they can be protected, these problems are still being raised. However, these experiments in China will have many points to refer to in case of Korea, which has a lot of problems due to the excessive concentration of the metropolitan area.
권기영(Kwon Ki Young) 중국문화연구학회 2016 중국문화연구 Vol.0 No.34
This paper is China game industry go-to-market strategy for analysis abroad and in the future, Korea and with the collaboration of China"s game industry to derive implications in relation to the purpose. China"s game industry is about 30 percent every year for the past 8 years of growth, China domestic game is 70% and the domestic market. China in accordance with these developments in overseas exports grew rapidly in the game. The evolution of the game industry promotion China game industry for a variety of government policies and efficient policy propulsion system, and sharply expanding the domestic market will be helped, such as a scale. But more than anything the innovative efforts of companies important China game powered by. China game industry carve out their particular overseas markets appears significantly in these efforts. The game of companies are exploring various strategies for overseas. Of course, to take advantage of these various models are above their capabilities and considering the characteristics of the market abroad by region was selected. China Government"s policy was to help to support overseas, but in the last 10 years, China companies showed that the performance of these enterprises" innovative overseas advance was the result of the effort. They are rapidly growing giant did not settle in the domestic market and didn"t have a lot of return on the market in Southeast Asia was not neglected. They entered the mainstream market in order to enhance the capabilities of game development on intensive investment in itself. They are suitable for local characteristics, the way I had to try a wide variety of offshoring. They recently secured a global excellent IP(intellectual property) and an aggressive investment for. They also pioneered the emerging markets are moving rapidly. These innovative efforts of China companies in overseas markets have to compete with the China companies and also many implications for Korean companies.
권기영(Kwon, Ki-Young),김영조(Kim Yung-Cho) 한국산학기술학회 2007 한국산학기술학회 학술대회 Vol.- No.-
본 논문에서는 차세대 디스플레이로 각광받고 있는 플렉시블 디스플레이의 일환으로 전하를 갖는 입자가 전계에 의한 운동(Movement)을 기반으로 이미지를 구현하는 유리 기판 기반의 액상분말 전자종이의 패턴(Pattern)을 설계하였으며 셀 캡(Cell Gap)에 따른 구동전압의 변화를 검토하였다. 확보된 데이터를 바탕으로 플렉시블 기판을 적용한 패널을 제작할 경우 효율적인 전기적 특성을 갖는 소자의 설계조건이 제시되었다.
권기영(Kwon, Ki-Young),김성운(Kim, Sung-Woon),황인성(Hwang In-Sung),김영조(Kim, Young-Cho) 한국산학기술학회 2008 한국산학기술학회논문지 Vol.9 No.1
본 논문에서 대전입자형 디스플레이 패널의 기본적인 구동방식 및 각각의 셀의 선택적 구동방식에 관하여 기술하였다. 패널을 제작하기 위해 500㎛×500㎛의 셀면적을 가지고 있는 마스크패턴을 설계하였으며 기본적인 구동 조건을 바탕으로 셀캡의 변화에 따른 구동전압의 변화를 관찰하였다. 수동메트릭스 방식으로 구동되는 패널의 각각의 셀을 선택적으로 구동하기 위해 선택된 셀과 선택되지 않은 셀의 전위차 상관관계를 확립하여 패널의 선택적인 구동을 수행하였으며 구동이 완료된 패널의 crosstalk현상을 관찰하였다. 또한 추가적인 전압을 인가하지 않아도 마지막 이미지가 오랜 시간 동안 유지되는 패널의 메모리 효과를 확인하였다. In this paper, fundamental driving method and selective driving each cells of charged particle type display are described. To fabricate panel, mask patterns with cell area of 500㎛×500㎛ are designed. Gain of driving voltage due to increase of cell gap is observed on the basis of fundamental driving method. To selectively drive each cells of charged particle type display that is driven by passive matrix method, selective driving of charged particle type display is achieved after establishing interrelation of voltage of select cell and unselect. And than crosstalk of the driven panel is observed. It can be found that the last image is maintained without additional voltage by memory effect.