Jeong-Kyoum Kim

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The purpose of this study is to verify the structural relationship among affective characteristics, cognitive characteristics, students’ participation, and course-retaking intention in e-learning environment. Web survey was conducted from one university in Korea and 210 students participated in this survey who already took e-learning courses. A hypothetical(More)
We present high performance silicon photonic circuits (PICs) defined for off-chip or on-chip photonic interconnects, where PN depletion Mach-Zehnder modulators and evanescent-coupled waveguide Ge-on-Si photodetectors were monolithically integrated on an SOI wafer with CMOS-compatible process. The fabricated silicon PIC(off-chip) for off-chip optical(More)
|Full Text: PDF (444 KB) 4. Mean shift: a robust approach toward feature space analysis Comaniciu, D.; Meer, P. Pattern Analysis and Machine Intelligence, IEEE Transactions on Volume 24, Issue 5, Date: May 2002, Pages: 603-619 Digital Object Identifier 10.1109/34.1000236 Abstract |Full Text: PDF (3254 KB) 5. Design of a High Performance 2-GHz(More)
This study seeks to investigate research trends on e-learning in Korea for the past 10 years and meta-analyze relations between e-learning and its effectiveness with an eye on confirming the effectiveness of e-learning. The analysis showed that there is a high correlation between changes in the society’s overall interest in e-learning and the number of(More)
This paper describes DLL architecture and ZQ calibration method for 30nm 1.2V 4Gb 3.2Gb/s/pin DDR4 SDRAM. Proposed DLL consists of one DLL with CML DCDL and another DLL with CMOS DCDL which tracks first one for low jitter and low power characteristics. Quantization error minimized (QEM) ZQ calibration is proposed for better signal integrity and yield(More)
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