Web portal is a useful way for high-tech information center providing information services for high-tech enterprises. The importance of evaluating the information service quality of the web portal has been recognized by both information service researchers and practitioners. By applying for an analytic hierarchy process (AHP) approach, a hierarchical structure evaluation criteria model has been constructed, and the global priority weight of each criterion in the model has also been determined in this study. According to the model, two different methods—comprehensive score method and correspondence analysis (CA) have been used to analyze and evaluate the information service quality of ten primary information center web portals in China hightech industry from different aspects. The findings of this study pro-vide a useful instrument for researchers who wish to measure the information service quality of web portals, as well as for hightech information center managers who want to enhance their web portals service performance

Studying the security status of China’s natural gas supply and proposing a feasible coping strategy for enhancing that security is of great significance. We use a pressure-state-response (PSR) analysis framework and the exponential weighting method to make a systematic evaluation of China’s natural gas security, predict the evolution of natural gas security combined with the GM(1,1) model, and use the obstacle degree model to diagnose the obstacles standing in the way of China’s optimum natural gas security. China’s natural gas comprehensive security index from 2006 to 2015 was between 0.627 and 0.740, and it is predicted to land between 0.669 and 0.759 from 2016 to 2025. The barriers affecting China’s natural gas security moving forward will be focused on urban development pressure, natural gas consumption growth pressure, supply-demand ratio, storage-production ratio, import price volatility for liquefied natural gas, and import dependence. We predict China’s natural gas security will be characterized by a wave of advancement, and has certain periodicity. The main internal factors affecting China’s natural gas security will shift from the rudimentary natural gas pipeline construction and gas storage facilities construction to the low availability of natural gas and urbanization, which will increase the pressure on natural gas supply and demand.

Water can carry a boat but can also overturn it (human societal sustainable development). Governments faced aquatic ecosystem restoration and preservation challenges following the establishment of the United Nations Sustainable Development Goals. This paper proposes a social welfare maximization game model to analyze the dominant strategy equilibrium of enterprise-1 and enterprise-2 based on welfare maximization under the total sewage emission control policy. Under the aforementioned control policy, a stricter total sewage emission control of an enterprise corresponds to a lower enterprise output and a higher output of a competing enterprise; that is, the profit transfer effect occurs. When the government implements a relatively strict total sewage emission control policy for an enterprise, it is beneficial to reduce the amount of sewage emission from an enterprise but has no impact on the amount of sewage emission from a competing enterprise; however, the amount of sewage reduction of both enterprises will increase. If the government does not provide capital and technical support to enterprise-2, then enterprise-1 and enterprise-2 should implement total quantity control policies with different rigor degrees to avoid the one-size-fits-all phenomenon. To maximize social welfare, the government should adjust the total sewage emission control policy in time according to sewage stock changes and focus more on enterprises with insufficient capital and poor technical skills and provide financial and technical support.

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