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A linear system model was set up on a regional scale by regarding annual average runoffs of downstream Heihe River as incentives to the eco-system, and MODIS/Terra monthly NDVI (Normalized Difference Vegetation Index) data as responses from the system. With aquifer hydraulics mechanism analysis, the theoretical basis of the lag model was derived on a solution of one-dimensional river-land groundwater...
To meet the increasing capacity and mobility as well as decrease the costs in next-generation optical access networks, RoF technology is a promising technique in the emerging optical and wireless convergence network. mm-wave generation is a key technique to realize the convergence network. In this paper, existing optical mm-wave generation technologies are introduced, including direct modulation,...
This case study describes the effects of a grouting process developed to decrease groundwater flow exiting from a ruptured mine ventilation shaft lining in Luling coal mine at Huaibei, China. The primary purpose of grouting at this site is to prevent groundwater flow into the mine from adjacent aquifers. The study supports a transport perspective to describe the miscible grout movement, and provides...
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