Yu-Jung Lee

Education

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  National Chiao Tung University

  2007 - 2014

  Doctor of Philosophy (Ph.D.) Mechanical Engineering

  Ability to learn and to try new skills and to accept different suggestions and teamwork.- The National Laboratory for Nanomaterials (NDL) takes courses in integrated circuit fabrication technology training courses and semiconductors equipment workshops and obtains engineering safety qualifications.- Teaching assistants, included photo-elasticity, engineering mathematics, and advanced dynamics.My dissertation contributes to liquid crystal dynamics subject to tactile forces… Show more Ability to learn and to try new skills and to accept different suggestions and teamwork.- The National Laboratory for Nanomaterials (NDL) takes courses in integrated circuit fabrication technology training courses and semiconductors equipment workshops and obtains engineering safety qualifications.- Teaching assistants, included photo-elasticity, engineering mathematics, and advanced dynamics.My dissertation contributes to liquid crystal dynamics subject to tactile forces. According to the visco-elasticity theory and the continuum theory of Ericksen-Leslie, this thesis constructs theoretical models for nematic liquid crystals in order to investigate the cause of ripple propagation. Show less

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  Feng Chia University

  2005 - 2007

  Master's degree applied mathematics and communication

  Combined with mathematical theory and applied to the communication system, a wide range of learning new things. The purpose of Master's thesis in information hiding in JPEG2000 compressed images apply lifting 9/7 discrete wavelet transformation. Different from the DCT of JPEG, the DWT of JPEG2000 can select applicable wavelet coefficients flexibly to operate. The method proposed in this thesis not only enable to hid the compressed images but also keep the excellences in the capability… Show more Combined with mathematical theory and applied to the communication system, a wide range of learning new things. The purpose of Master's thesis in information hiding in JPEG2000 compressed images apply lifting 9/7 discrete wavelet transformation. Different from the DCT of JPEG, the DWT of JPEG2000 can select applicable wavelet coefficients flexibly to operate. The method proposed in this thesis not only enable to hid the compressed images but also keep the excellences in the capability of JPEG2000 and the lifting scheme of second generation wavelet. Experiment results show that the following properties: Is capable of resisting the Chi-square statistical detection attack and better image quality and high imperceptibility to the high complex images. Finally, comparing the quantization step to hid the images, we have the causality of anamorphosis is compression, not information hiding. Show less