Skip to main content

5 Result(s)

within Sang Kyun Lee Remove this filter

and

  1. No Access

    Article

    An efficient energy and power manager for autonomous systems based on energy harvesting

    This paper describes the design of an energy and power manager for energy-harvesting devices consisting of four power converters operating in PFM mode for a low-energy and load current. The harvested energy ca...

    Sewan Heo, Sang-kyun Lee, Yil Suk Yang in Analog Integrated Circuits and Signal Processing (2014)

  2. No Access

    Article

    PMN-PT Single Crystal Piezo-Electric Acoustic Sensor

    The MEMS (micro-electro-mechanical systems) microphone enables the manufacturing of small mechanical components on the surface of a silicon wafer. The MEMS microphones are less susceptible to vibration because...

    Sung Q Lee, Hye ** Kim, Sang Kyun Lee, Jae Woo Lee… in MRS Online Proceedings Library (2007)

  3. No Access

    Article

    Synthesis of fine Ca-doped BaTiO3 powders by solid-state reaction method—Part I: Mechanical activation of starting materials

    Fine (Ba0.98Ca0.02)1.002TiO3 powders for high capacitance multilayer ceramic capacitors (MLCCs) application were synthesized by solid state reaction method. The effects of mechanochemical activation using high en...

    Sung-Soo Ryu, Sang-Kyun Lee, Dang-Hyok Yoon in Journal of Electroceramics (2007)

  4. No Access

    Article

    Synthesis of fine Ca-doped BaTiO3 powders by solid-state reaction method—Part II: Rheological study on milling

    The observations and explanations for the rheological behavior associated with the slurry processing for Ca-doped BaTiO3 synthesis are included in this second part of our report. The optimum slurry conditions con...

    Sang-Kyun Lee, Sung-Soo Ryu, Dang-Hyok Yoon in Journal of Electroceramics (2007)

  5. No Access

    Chapter

    Combining Information-Based Supervised and Unsupervised Feature Selection

    The filter is a simple and practical method for feature selection, but it can introduce biases resulting in decreased prediction performance. We propose an enhanced filter method that exploits features from tw...

    Sang-Kyun Lee, Seung-Joon Yi, Byoung-Tak Zhang in Feature Extraction (2006)