http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Development of Small Sized Actuator With Compliant Mechanism for Optical Image Stabilization
Song, Myeong-Gyu,Baek, Hyun-Woo,Park, No-Cheol,Park, Kyoung-Su,Yoon, Taeyong,Park, Young-Pil,Lim, Soo-Cheol IEEE 2010 IEEE transactions on magnetics Vol.46 No.6
<P> In this paper, a voice-coil actuator for OIS integrated in mobile phone camera is developed. The actuator with compliant mechanism is free from friction, so open loop control becomes possible and the performance of optical image stabilization can be improved. The compliant mechanism that consist 4 wires is designed for the OIS actuator and the electromagnetic part is also design and improved by using design of experiments. After all, the final design is fabricated and verified experimentally. The experiment result shows that the developed actuator has sufficient performance and good linearity for open loop control. </P>
Face Recognition Authentication Scheme for Mobile Banking System
Song, JongGun,Lee, Young Sil,Jang, WonTae,Lee, HoonJae,Kim, TaeYong The Institute of Internet 2016 International Journal of Internet, Broadcasting an Vol.8 No.2
In this paper, we propose 3-factor mobile banking authentication scheme applied to face recognition techniques with existing certificate and OTP. An image of the user's face is captured by smart phone camera and its brightness processing of the contour of a face and background by n of X and Y points. Then, distance between the point of eyes, nose and mouth from captured user's face are compared with stored facial features. When the compared results corresponding to the data that stored in a face recognition DB, the user is authenticated.
납-비스무스 공융물 환경에서의 적층제조된 재료의 부식 거동 연구
김태용(Taeyong Kim),김병주(Byeongju Kim),김기동(Gidong Kim),송상우(Sangwoo Song),김지현(Ji Hyun Kim) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11
This paper study on LBE corrosion behavior of clad material manufactured by direct energy deposition . Fe-12Cr-2Si alloys, which is corrosion resistance material with clad, are immersed in 550 ℃, 1e-7 wt.% dissolved oxygen concentration static LBE. At the same time, SS316L clad are also exposed to same condition. Through a scanning electron microscope, corroded cross-section of clad Fe-12Cr-2Si, clad SS316L and as-received SS316L are compared. The clad Fe-12Cr-2Si shows more enhanced corrosion resistance than as-received Fe-12Cr-2Si because grain size of the clad is bigger so that diffusion paths like grain boundaries decrease. On the other hand, corrosion resistance of the clad SS316L is inferior to as-received SS316L. When passive layer is not sufficient, solub le Ni in LBE is easy to diffuse not only grain boundary but also grain. Larger grain which has high diffusivity along crystal plane locally, deeper the dissolution and LBE penetration depth.
Generalized Reliability Importance Measure (GRIM) using Gaussian mixture
Kim, Taeyong,Song, Junho Elsevier 2018 Reliability engineering & system safety Vol.173 No.-
<P><B>Abstract</B></P> <P>In structural reliability analysis, it is often desirable to evaluate the relative contributions of random variables to the variability of the limit-state function in the failure domain. Based on the relative contributions, one can effectively reduce the dimension of the reliability problem or obtain useful insight and information. However, existing reliability importance measures, which are available as a by-product of reliability analysis by first-order reliability method (FORM), may not capture the contributions of random variables accurately when the limit-state surface shows a large curvature around the design point or multiple critical subdomains exist in the failure domain. To address the issue, this paper proposes a Generalized Reliability Importance Measure (GRIM) that can deal with multiple critical failure regions, large curvatures of limit-state surfaces and the correlation between the input random variables. By introducing Gaussian mixture and the regional participation factor, the failure domain is divided into several subdomains, and the relative contributions of random variables in each critical domain are evaluated. To facilitate the computations of GRIMs, the cross-entropy-based adaptive importance sampling technique (CE-AIS-GM) is employed to identify the locations of critical subdomains, their relative contributions and corresponding importance vectors. Eight numerical examples covering a variety of component and system reliability problems demonstrate the proposed method and its merits. The test results confirm robust performance against the number of important regions or the dimension. The proposed GRIMs and computational procedure are expected to provide more reliable measures for a wide range of component and system reliability problems. The supporting source code and data are available for download at https://github.com/TyongKim/GRIM.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The concept of FORM importance measures are generalized to handle challenging problems. </LI> <LI> GRIM overcome challenges in problems with multiple critical subdomains or large curvature. </LI> <LI> Using regional participation factors, the relative importance is evaluated per each critical region. </LI> <LI> GRIMs are computed using a Gaussian mixture model fitted to the density in the failure domain. </LI> <LI> Various numerical examples successfully demonstrate merits and applicability of GRIMs. </LI> </UL> </P>
납-비스무스 공융물 환경에서의 적층제조된 재료의 부식 거동 연구
김태용(Taeyong Kim),김병주(Byeongju Kim),김기동(Gidong Kim),송상우(Sangwoo Song),김지현(Ji Hyun Kim) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11
This paper study on LBE corrosion behavior of clad material manufactured by direct energy deposition . Fe-12Cr-2Si alloys, which is corrosion resistance material with clad, are immersed in 550 ℃, 1e-7 wt.% dissolved oxygen concentration static LBE. At the same time, SS316L clad are also exposed to same condition. Through a scanning electron microscope, corroded cross-section of clad Fe-12Cr-2Si, clad SS316L and as-received SS316L are compared. The clad Fe-12Cr-2Si shows more enhanced corrosion resistance than as-received Fe-12Cr-2Si because grain size of the clad is bigger so that diffusion paths like grain boundaries decrease. On the other hand, corrosion resistance of the clad SS316L is inferior to as-received SS316L. When passive layer is not sufficient, solub le Ni in LBE is easy to diffuse not only grain boundary but also grain. Larger grain which has high diffusivity along crystal plane locally, deeper the dissolution and LBE penetration depth.
Face Recognition Authentication Scheme for Mobile Banking System
JongGun Song,Young Sil Lee,WonTae Jang,HoonJae Lee,TaeYong Kim 한국인터넷방송통신학회 2016 International Journal of Internet, Broadcasting an Vol.8 No.2
In this paper, we propose 3-factor mobile banking authentication scheme applied to face recognition techniques with existing certificate and OTP. An image of the user's face is captured by smart phone camera and its brightness processing of the contour of a face and background by n of X and Y points. Then, distance between the point of eyes, nose and mouth from captured user’s face are compared with stored facial features. When the compared results corresponding to the data that stored in a face recognition DB, the user is authenticated.