Practical Cryptanalysis of a Public Key Cryptosystem Based on the Morphism of Polynomials Problem Theoretical and exploratory research on sustainability mental model of the public in China:based on a typical survey in Guangdong province Supply of ecological products based on heterogeneity of public goods Evolution of Specialization with Reachable Transaction Scope Based on a Simple and Symmetric Firm Resource Allocation Model Digital humanistic perspective: A study on the visualization of political network in Song Dynasty based on symbolic analysis Cross-correlation analysis of crude oil and new energy markets: A new perspective based on carbon emission market A Caching Strategy Based on Many-to-Many Matching Game in D2D Networks The impact of legality verification on Chinese wood processing enterprises: Based on a survey in Jiangsu and Zhejiang province How do international agreement constraints affect marine litter management strategies?A research based on differential game Impact of human settlements quality on urban vitality based on multisource data: A case study of Shahekou District, Dalian,China