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It has been hypothesized that differences in spatial arrangements change the relative frequency of intra- and interspecific encounters between plant species. Manipulating spatial arrangement may play a role in invasive plant suppression when native species are used as competitors against introduced species. In this study, a replacement series experiment was performed to investigate the effects of...
In this paper, a new Cartesian gas cutting robot was designed, which had five servo motors and six stepped motors. Also, we developed a three-torch model and studied algorithm and boundary conditions that were pretty available for three-torch device and experiment verified this theory. A laser height control system was also developed in this robot. And the experiments certified that the model was...
Paspalum distichum, Cynodon dactylon and Hemarthria altissima distribute widely in natural water fluctuation zone of the Three Gorges region. To investigate whether they are suitable for growing in the artificial water fluctuation zone, which has longer submergence time and different submergence rhythm, of the Three Gorges reservoir, three complete submergence depths (0.5, 1 and 2m) were conducted...
As a technology to improve safety, efficiency and convenience in transportation, vehicular ad hoc networks(VANETs) attract more and more attentions of researchers. VANETs will achieve a series of applications by periodically broadcasting beacons containing vehicular status information such as position, velocity and direction. However, some attackers might also utilize the information to track users'...
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