Introduction.Spatial core structures of coatings are used for more efficient industrial production of building structures, which reduces the costs of their mass production, specialization of production and rationality of design solutions.When designing spatial coverings, unique designs of single execution are used, which help to solve grandiose arc
A maneuvering decision-making model based on time series rolling and feedback compensation methods is proposed to solve the problem of high traffic risk in Chengshantou traffic separation scheme (TSS) waters.Firstly, a digital traffic environment model suitable for the TSS waters is Vases proposed.Secondly, a navigation risk identification method i
The National Water Park System (NWPS) in China and the National Wild and Scenic Rivers System (NWSRS) in the United States represent typical protected river systems (PRSs) for conservation of water resources.This study used spatial analysis methods to characterize and compare the aggregated distribution of two types of PRSs and further explored the