Research on the Theory of Governmental Environmental Regulatory Responsibility

In recent years,the environmental pollution caused by the rapid development of tourist attractions has increasingly become the focus of society,which has triggered scholars to think about the government's responsibility for environmental regulation,and has generated a variety of theories in the academic world.For example,the stakeholder theory extends corporate governance to the regulation of tourism scenic spots,and achieves the purpose of perfecting the environmental regulation of tourism scenic spots by continuously enriching the scope of stakeholders'subjects;the property rights theory analyzes the transaction costs generated by various economic activities in the regulation of tourism scenic spots from macro and micro perspectives,and the public goods theory clarifies the concept,types and characteristics of tourism scenic spots as public goods.Therefore,based on stakeholder theory,property rights theory and public goods theory,this paper explores and clarifies the content of the government's responsibility in the environmental regulation of tourism scenic spots,and tries to further enrich the theoretical results of the government's environmental regulation responsibility,in order to provide new ideas for the sustainable development of tourism scenic spots from the theoretical point of view.

The Construction and Application of Work and Production Resuming Behavior System Dynamics Evolutionary Game Regulation and Control Model

The resumption of production after the“suspension”caused by the COVID-19 has emerged as an urgent problem for many enterprises and the government.The resumption of production is actually a dynamic evolution problem from 0 to 1(100%).This paper constructs a general game model and a dynamic replication system for the resumption of production and government support,and gives theorems for the construction of the model.It analyzes the evolution mechanism and scenario conditions for the convergence of enterprise strategies to the“resumption of production”strategy,takes the resumption of production of hog farmers as an example to carry out a study on the regulation of countermeasures to resume hog production,and explores systemic countermeasures and suggestions for the rapid convergence of farmers’strategies to the“resumption of work and production”strategy.The study found that the production resuming behavior system dynamics evolution game regulation model provides a systematic model and method for the study of resumption countermeasures,a general regulation model for the resumption ratio from 0 to 1(100%),and a systematic idea,method and model for exploring the“precise strategy”system to promote the rapid resumption of production.

A Model System of Development Regulated by the Long-distance Transport of mRNA

BELl-like transcription factors are ubiquitous in plants and interact with KNOTTEDI-types to regulate numerous developmental processes. In potato, the RNA of several BELl-like transcription factors has been identified in phloem cells. One of these, StBEL5, and its Knox protein partner regulate tuber formation by targeting genes that control growth. RNA detection methods and grafting experiments demonstrated that StBEL5 transcripts move across a graft union to localize in stolon tips, the site of tuber induction. This movement of RNA originates in source leaf veins and petioles and is induced by a short-day photoperiod, regulated by the untranslated regions, and correlated with enhanced tuber production. Addition of the StBEL5 untranslated regions to another BELl.like mRNA resulted in its preferential transport to stolon tips leading to increased tuber production. Upon fusion of the untranslated regions of StBEL5 to a β-glucuronidase marker, translation in tobacco protoplasts was repressed by those constructs containing the 3＇ untranslated sequence. The untranslated regions of the StBEL5 mRNA are involved in mediating its long-distance transport and in controlling translation. The 3＇ untranslated sequence contains an abundance of conserved motifs that may serve as binding motifs for RNA-binding proteins. Because of their presence in the phloem sieve tube system, their unique untranslated region sequences and their diverse RNA accumulation patterns, the family of BEL1-like RNAs from potato represents a valuable model for studying the long-distance transport of full-length mRNAs and their role in development.