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Whole‐genome sequencing of “Candidatus Liberibacter asiaticus” (Las) indicated some polymorphic gene regions enabling the molecular characterization of this bacterium. Although the population diversity of Las in China has been previously studied, no reports have used a combination of a prophage region and short tandem repeat (STR) loci for phylogenetic relationship characterization. In this study,...
In this paper, we propose a new method to realize bidirectional visible light communication (VLC). We implement the bi-directional VLC system based on digital television terrestrial multimedia broadcasting-advanced (DTMB-A) and apply timedomain synchronous OFDM (TDS-OFDM) in the physical layer. A new type of APSK constellation with Gray mapping is used to provide a considerable shaping gain in both...
Tracking-Learning-Detection (TLD) is an excellent visual tracking method, it decomposes the long-term tracking into three sub-tasks: tracking, learning and detecting. Each sub-task is addressed by a single component and operates simultaneously, all three sub-tasks are unified in a tracking-learning-detection framework. But our experiments show that it is sensitive to the illumination changing. In...
Rail track extraction from the image can be used to determine the train localization, or vision-based inspection of the rail, and some other driver supporting systems in railway. For the vision-based inspection, it is one of the most important tasks. But visual approach suffers from some common difficulties, the illumination change, shadow, weather effects, etc, which make the image processing for...
Distinguishing inrush current and short circuit current is a key issue for the longitudinal differential protection of high-speed train's traction transformer. This paper introduced virtual instrument technology to build an inrush current identification system, which utilized software to realize the identification algorithm and applied digital signal processing approach to the differential protection...
Taking the neutral earthing via arc extinguishingcoil electric network for example, the thesis emphatically analyses the start-up of leakage protection and basis of line selection, on the foundation of analysing its electrical characteristics. And this thesis presents the leakage protection program "Starting on zero-sequence current and break variable and selectively operating on the comparison...
Neural recognition molecule NB‐3 is involved in neural development and synapse formation. However, its role in axon tract formation is unclear. In this study, we found that the temporal expression of NB‐3 in the deep layers of the motor cortex in mice was coincident with the development of the corticospinal tract (CST). Clear NB‐3 immunoreactivity in the CST trajectory strongly suggested that NB‐3...
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