http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 최성윤 ( Sung Yoon Choi ) (검색결과 13 건)
- 무료
- 기관 내 무료
- 유료
-
신생아 대사질환 선별검사에서 발견된 갈락토스혈증의 감별진단
최성윤,송웅주,임한혁,길홍량,김숙자,Choi, Sung Yoon,Song, Woong Ju,Lim, Han Hyuk,Kil, Hong Ryang,Kim, Sook Za 대한유전성대사질환학회 2013 대한유전성대사질환학회지 Vol.13 No.2
Purpose: We retrospectively investigated individuals who hadbeen identified by neonatal screening as potential galactosemia patients to determine the etiology of galactosemia. Methods: One hundred fifty-three patients referred to Korea Genetics Research Center due to high galactose level detected by neonatal screening test between February 2005 and May 2013 were examined. Galactose and galactose-1-phosphate levels were measured by using a fluoro metric microplate reader. Lactose free diet was initiated immediately after confirmed by urine Clinitest. If reducing sugar was negative, we employed abdominal sonogram and echocardiogram to check for possible porto-systemic shunt. Results: Fifteen patients were diagnosed with galactosemia. One patient had galactokinase (GALK) deficiency; four had UDP galactose-4-epimerase (GALE) deficiency; two had citrin deficiency; and four had porto-systemic shunt. Two had unknown causes of galactosemia. Conclusion: In addition to genetic defects of GALT, GALK and GALE, citrin deficiency or porto-systemic shunt could also cause galactosemia. It is crucial to carry out differential diagnosis to determine the cause of galactosemia.
-
2 레이어 파라메트릭 집광채광 루버를 활용한실내 온열환경 개선에 관한 연구
최성윤(Choi Sung yoon),심슬기(Sim Seul Gi),권단비(Kwon Dan Bi),박경순(Park Kyung Soon) 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.6
The BIPV, which is closely attached to windows and exterior walls, has problems with safety and deterioration of indoor thermal environment, which reduces the comfort of passengers. In contrast, a study was conducted to improve the thermal environment by combining BIPV with a two-layer louver condensation lighting system. In the office, the rooms were divided based on the center of the two windows, a two-stage louver was installed in the left window, and a BIPV was installed in the ceiling. On the right side, after installing the BIPV in the indoor window, the temperature, humidity and illumination were measured by the equipment installed in the same position every hour. As a result of the experiment, the longer the distance from the window, the lower the overall temperature, and the higher the temperature where the lighting louvers were installed on the second floor. The possibility of solar power generation using a second-floor luminescent louver was also confirmed because the illuminance difference was large near the window space and solar power generation modules were installed on the ceiling near the window.
-
2 레이어 파라메트릭 집광채광 루버를 활용한실내 온열환경 개선에 관한 연구
최성윤(Choi Sung yoon),심슬기(Sim Seul Gi),권단비(Kwon Dan Bi),박경순(Park Kyung Soon) 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.6
The BIPV, which is closely attached to windows and exterior walls, has problems with safety and deterioration of indoor thermal environment, which reduces the comfort of passengers. In contrast, a study was conducted to improve the thermal environment by combining BIPV with a two-layer louver condensation lighting system. In the office, the rooms were divided based on the center of the two windows, a two-stage louver was installed in the left window, and a BIPV was installed in the ceiling. On the right side, after installing the BIPV in the indoor window, the temperature, humidity and illumination were measured by the equipment installed in the same position every hour. As a result of the experiment, the longer the distance from the window, the lower the overall temperature, and the higher the temperature where the lighting louvers were installed on the second floor. The possibility of solar power generation using a second-floor luminescent louver was also confirmed because the illuminance difference was large near the window space and solar power generation modules were installed on the ceiling near the window.
-
2 레이어 파라메트릭 집광채광 루버를 활용한실내 온열환경 개선에 관한 연구
최성윤(Choi Sung yoon),심슬기(Sim Seul Gi),권단비(Kwon Dan Bi),박경순(Park Kyung Soon) 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.6
The BIPV, which is closely attached to windows and exterior walls, has problems with safety and deterioration of indoor thermal environment, which reduces the comfort of passengers. In contrast, a study was conducted to improve the thermal environment by combining BIPV with a two-layer louver condensation lighting system. In the office, the rooms were divided based on the center of the two windows, a two-stage louver was installed in the left window, and a BIPV was installed in the ceiling. On the right side, after installing the BIPV in the indoor window, the temperature, humidity and illumination were measured by the equipment installed in the same position every hour. As a result of the experiment, the longer the distance from the window, the lower the overall temperature, and the higher the temperature where the lighting louvers were installed on the second floor. The possibility of solar power generation using a second-floor luminescent louver was also confirmed because the illuminance difference was large near the window space and solar power generation modules were installed on the ceiling near the window.
-
연속적 블로잉에 따른 NACA 0015 익형 공력특성 변화에 대한 수치적 연구
최성윤(Sung Yoon Choi),권오준(Oh Joon Kwon) 한국항공우주학회 2006 韓國航空宇宙學會誌 Vol.34 No.5
본 연구에서는 연속적 블로잉 요소들의 변화가 낮은 레이놀즈 수를 가지는 유동장에서 NACA 0015 익형 주위의 유동제어 및 익형의 실속제어에 미치는 영향에 대하여 비정렬격자계를 사용하는 수치적 기법을 이용하여 살펴보았다. 실속 이전의 받음각들에서 연속적 블로잉 요소들의 변화에 따른 공력계수 및 모멘트 계수의 변화를 통하여 각 요소들의 유동제어 효과를 살펴보았으며, 각 요소들의 변화에 따른 실속각의 변화를 통하여 실속제어 효과를 살펴보았다. 실속이전의 받음각에서 비교적 강한 세기의 블로잉을 수행하면 항력의 증가를 동반한 양력의 증가가 나타났다. 앞전부근에서의 적절한 세기의 연속적 블로잉은 실속이전의 각에서 양력의 증가를 나타내고, 실속제어 특성을 보였다. 블로잉 제트의 방향이 유동제어를 하지 않았을 때의 블로잉 슬롯 주변 유동의 방향과 일치하는 경우가 가장 좋은 유동제어 특성을 나타냄을 알 수 있었다. The effects of continuous blowing on flow control and stall suppression for flows over a NACA 0015 airfoil at low Reynolds numbers were numerically investigated through its parameter variation on unstructured meshes. The aerodynamic force and moment variations due to flow control were examined, along with the stall angle-of-attack change for stall suppression. The results showed that blowing with relatively strong jet increases lift at the cost of drag increment below stall angle. Continuous blowing delays flow stall when it is implemented near the leading edge. When the blowing jet was aligned along the flow direction on the airfoil, the favorable flow control effect was most significant below the stall angle of attack.
-
-
-
최성윤(Sung Yoon Choi),권오준(Oh Joon Kwon) 한국항공우주학회 2006 韓國航空宇宙學會誌 Vol.34 No.2
본 연구에서는 수치적 방법을 이용하여 타원형 익형의 공력특성에 대한 연구를 수행하였다. 타원형 익형의 경우 현재까지 널리 사용되어진 NACA 계열 익형들에 비하여 작은 앞전 곡률반경을 가진다. 또한 NACA 계영 익형들과는 달리 앞전과 같은 곡률반경을 가지는 뒷전 형상을 가지며, 익형의 최대 두께가 시위의 1/2지점에 존재한다. 타원형 익형의 경우 이러한 형상적인 특징들에 의하여 NACA 계열 익형들과는 다른 공력특성을 나타내는데, 본 연구에서는 같은 최대 두께를 가지는 NACA 계열 익형과 타원형 익형의 다양한 유동조건에서의 공력특성에 대한 수치해석 결과를 비교를 통하여 타원형 익형의 공력특성에 대하여 살펴보았다. 또한 타원형 익형의 두께변화에 따른 공력특성의 변화 역시 함께 고려하였다. In the present study, the aerodynamic characteristics of elliptic airfoils are investigated numerically based on the RANS equations and the S-A turbulent model on unstructured meshes. Unlike the NACA series airfoil sections, elliptic airfoils have a relatively small leading edge radius and a rounded trailing edge. Also the maximum thickness is located in the middle of the chord. This geometric characteristics are responsible for the difference in the aerodynamic characteristics from those of NACA family airfoils. To identify the aerodynamic characteristics of elliptic airfoils, the results were compared with those of NACA series airfoils with a same maximum thickness. The effect of airfoil thickness variation on the aerodynamic characteristics were also investigated.
-
Girney 플랩과 제트 플랩을 혼용한 유동제어 기법에 관한 수치적 연구
최성윤(Sung-Yoon Choi),권오준(Oh Joon Kwon) 한국항공우주학회 2007 韓國航空宇宙學會誌 Vol.35 No.7
본 연구에서는 NACA 0012 익형 주위의 비교적 높은 레이놀즈수 유동장에 대한 Gurney 플랩과 제트 플랩을 혼용한 유동제어 기법의 유동제어 특성에 대하여 비정렬 격자계를 사용하는 수치적 기법을 이용하여 살펴보았다. 혼합제어 기법의 유동제어 특성을 파악하기 위하여 유동제어에 따른 공력계수 및 모멘트 계수의 변화를 혼합제어 기법을 구성하는 각각의 유동제어 기법들의 결과들과 비교하여 살펴보았다. 혼합제어 기법의 경우 제트 플랩만을 고려한 경우에 비하여 상당히 낮은 무차원 세기의 제트를 이용하여도 유사한 양력 향상 특성을 획득할 수 있었으며, Gurney 플랩만을 이용한 경우에 나타나는 항력의 증가를 완화시켜 주었다. The flow control effect of blending Gurney flap with jet flap for flow around an NACA 0012 airfoil was numerically investigated through parameter variation of each flow control mechanism on unstructured meshes. The aerodynamic force and moment variations due to flow control were examined, and the results were compared between the blending control and each individual flow control. The results showed that the blending control required less energy input to achieve the same level of lift increment than that of the jet flap, and at the same time alleviated drag increment caused by introducing the Gurney flap.
-
영단어 자동암기 학습 어플리케이션 서비스 모듈 개발에 관한 연구
김상규,최성윤,호정원,문송철,Kim, Sang-Gyu,Choi, Seong-Yoon,Ho, Jeong-Won,Moon, Song-Cheol 서비스사이언스학회 2011 서비스연구 Vol.1 No.1
본 연구에서는 Smart Phone에서 사용하는 영어학습용 어플리케이션으로서, 기존의 제품에 대비하여 음성지원 프로그램과 검색창 등을 제공하는 것으로 차별성을 두어, 보다 편리하고 실용적인 서비스 모듈을 스마트폰 운영체제인 안드로이드 기반에서 작동하는 앱으로서 개발하였다. 서비스 모듈 구현을 위해서 분석, 설계 및 구현과정을 거쳐서 작성된 문서 산출물과, 실제 구현 화면 등을 포함한 일부 코딩 내용을 제시하였다. 본 연구결과를 통해서 보다 효율적인 영어단어 암기 학습효과를 기대할 수 있다. In this research, we developed an practical service module as a application which operating on the smart phones based on the Android operating system. The service module supports on the voice processing function and inquiry windows also. After some documents and screens related on system analysis, service module are designed and implemented. The details about these modules are explained. We can expect to enhance the learning effects of english words memorizing competence for smart-phone users.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
