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Article
Efficiency evaluation of regional logistics industry and its influencing factors under low-carbon constraints
Energy shortage and excessive carbon emissions have become the main constraints to the sustainable development of China’s logistics industry. Improving the efficiency of the logistics industry is crucial to pr...
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Article
Coupling coordination analysis of grain production and economic development in Huang-Huai-Hai region
To better coordinate the relationship between grain production (GP) and economic development (ED) in the Huang-Huai-Hai (HHH) region and promote the coordinated growth of grain and economy, this study first es...
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Article
Prediction of agricultural grey water footprint in Henan Province based on GM(1,N)-BP neural network
The GM(1,N) model can consider the impact of many factors on a system, but it is only suitable for short-term prediction of small samples, and its ability to mine data information is weak. In response to this ...
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Article
Size distribution of individuals in the population of Asterias amurensis (Echinodermata: Asteroidea) and its reproductive cycle in China
To obtain baseline information on the size distribution of individuals in the population and reproductive features of sea star Asterias amurensis, monthly surveys of the population were carried out from May to De...