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Normally-off AlGaN/GaN metal-oxide-semiconductor high electron mobility transistors (MOS-HEMTs) on Si substrate were fabricated with the fluorine-based treatment technique. By employing a 20nm-thick Al2O3 gate dielectric deposited by atomic layer deposition, the fabricated MOS-HEMT exhibits a large positive threshold voltage of + 3.5V, a maximum gate input voltage of 15V, a maximum saturate drain...
By using satellite remote sensing images, changes of structure and spatial variation of land for construction during 2006 and 2009 were studied in Ji'an City, Jiangxi Province, China. The results show that: 1) area of the land for construction in the research zone greatly increased with an average annual growth rate of 5.55% and land for traffic had the most obvious change with 20.31% in three types...
The same crop shows possibly difference features in the different data sources (e.g. images) and different surrounding environments. And so, it is difficult to distinguish objective crop's spatial distribution only by one of methods, especially in monitoring the early rice planting area based on RS. This thesis describes some features of early rice and other confusing objects on images, in the case...
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