Based on annual observations of heavily polluting enterprises of A-share listed companies from 2012 to 2019, this paper analyzes the impact of officials' preference for enterprises' investment in environmental protection in the officials' hometowns. It is found that when the Secretary of the...

Purpose - The purpose of this paper is to explore the internal interaction mechanism of marine scientific research and education, industrial structure upgrading and marine economic growth from a systematic perspective, based on which this work forecasts their future development trends....

In order to evaluate the reliability of distribution system with demand response, this paper established the load peak-valley partition model and demand response model corresponding to every period based on load peak-valley characteristics. Then considering the characteristics of distribution...

The spread of natural gas in the main international natural gas markets shows characteristics of violent fluctuation, frequent mutation, and periodic evolution, which pose a great challenge to the safety and sustainable development of natural gas in China. First, this paper used the complete...