Taking a total of 13 areas in Heilongjiang commodity grain base as the research objects, 9 indices are selected, which are regional GDP (X1), per capita GDP (X2), total value of tertiary industry (X3), financial revenue (X4), urban fixed assets investment (X5), average salary (X6), gross...

Based on the apprehension of the connotation of brand extension, we select five factors to evaluate the brand extension of agricultural products, including the consumers’ attitude towards original brand of agricultural products, relevance between original products and extensive products,...

Currently, many defects have appeared in wind and solar power generation systems. Utilizing the complementary of wind and solar power generation will break the bottleneck of new energy development. How to select the site of wind/solar hybrid power station scientifically is a primary problem....