Volume 21 Issue 3 - January 13, 2012 PDF
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Articles Digest

Research Express@NCKU Jan. 13 ~ Feb. 2, 2012

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Anaerobic Hydrogen Production with an Efficient Carrier-Induced Granular Sludge Bed Bioreactor
Jo-Shu Chang

A novel bioreactor containing self-flocculated anaerobic granular sludge was developed for high-performance hydrogen production from sucrose-based synthetic wastewater. The reactor achieved an optimal volumetric hydrogen production rate of ~7.3 L/h/L (7.150 mmol/d/L) and a maximal hydrogen yield of 3.03 mol H2/mol sucrose when it was operated at a hydraulic retention time (HRT) of 0.5 h with …

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Adaptive synchronization of chaotic systems and its application to secure communications
Teh-Lu Liao

Synchronization in chaotic systems has received increasing attention with several studies on the basis of theoretical analysis and even realization in laboratory having demonstrated the pivotal role of this phenomenon in secure communications. The preliminary type of chaos synchronization consists of drive-driven systems: a drive system and a custom designed driven system. The drive system drives …

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Consumer Perceptions of Interface Quality, Security and Loyalty in Electronic Commerce
Hsin Hsin Chang

In today’s competitive e-commerce environment, it is difficult to build customer loyalty because of the low switching costs when a competition is “just a click away” (Chen & Hitt, 2002; Yang & Peterson, 2004). Hence, online companies have been eager to launch loyalty programs whereby customers may obtain substantial benefits by conducting most of their online shopping on one website (positive lock-in). …

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400-nm InGaN–GaN and InGaN–AlGaN Multiquantum Well Light-Emitting Diodes
Shoou-Jinn Chang

Rcenctly, tremendous progress has been achieved in GaN-based blue and green light-emitting diodes (LEDs). These blue/green LEDs have already been extensively used in full-color displays and high-efficient light sources for traffic light lamps. Although these blue/green LEDs are already commercially available, it is still difficult to achieve LEDs emitting at even shorter wavelength regions, …

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