Yun - Jie Huang

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Abstract—A closed-loop 7-level switched-capacitor (SC) boost DC-AC inverter is proposed by using a sinusoidal pulse-frequency-modulation (SPFM) controller for low-power step-up inversion and regulation. In this SC inverter, there are three pumping capacitors and 10 switches between supply source and output terminal not only to boost the maximum gain up to(More)
We propose and analyze a superluminal ring laser gyroscope (RLG) using multilayer optical coatings with huge group delay (GD). This GD assisted superluminal RLG can measure the absolute rotation with a giant sensitivity-enhancement factor of ~10(3); while, the broadband FWHM of the enhancement factor can reach 20 MHz. This superluminal RLG is based on a(More)
Effects of root treatment with 5-aminolevulinic acid (ALA) on leaf photosynthesis in strawberry (Fragaria ananassa Duch.) plants were investigated by rapid chlorophyll fluorescence and modulated 820 nm reflection using 3-(3,4-dichlorophenyl)-1,1-dimethyl urea (DCMU) and methyl viologen (MV). Our results showed that ALA treatments increased the net(More)
The value creation process in Web 2.0 provides new challenging “open business models” based on customer participation [Wirtz, Schilke and Ullrich, 2010]. People are no longer simply consumers of a company’s products or a target of its value proposition. They are major partners of companies and sometimes co-creators of value [Vargo and Lusch, 2004].(More)
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