Impact of coupling coordination development of port and city environments on urban economic competitiveness:Evidence from the coastal port cities in eastern China

Promoting the coupling coordination development of port and its hinterland city environments is an important way to improve urban economic competitiveness.Based on relevant data of 13 coastal port cities in eastern China from 2000 to 2018,this study explores the coupling coordination development of port and city environments and its impact on urban economic competitiveness by constructing the coupling coordination degree model and the panel threshold model.The research results show that:(1)In terms of the coupling coordination development of port and city environments,most coastal ports and their hinterland cities are in a state of moderate or serious disorder.Overall,the degree of coupling coordination of port and city environments needs to be further improved;(2)The coupling coordination degree of port and city environments has a significant impact on urban economic competitiveness,and this effect gradually increases with the development of the ports and the urban economy.Among the variables that impact the urban economic competitiveness,fixed assets investment and foreign trade are significant factors that can enhance urban economic competitiveness.(3)At present,there is a“U-shaped”relationship between the coupling coordination degree of port-city environments and the urban economic competitiveness.This relationship lies on the right side of the inflection point of the“U-shaped”curve.Therefore,following the concept of assigning priority to ecological development,expanding fixed assets investment and actively developing foreign trade can further enhance the urban economic competitiveness.

What Competition Model for Economic Development Should China Adopt at the Present Stage?

As a major developing country,China has attracted significant attention as to whichpathitshouldfol owfortechnologicalprogress.Accordingtotheauthorofthispaper,Chinashouldcontinueto pursue the international division of labor and competition strategy based on comparative advantages.Meanwhile,China should,through reform and adjustment,build a national innovation system capable ofplaying an e ective role in the future.However,laying too much emphasis on proprietary innovation atthe present stage wil bring about undesirable consequences.The timing for China to embark on a path oftechnologicaldevelopmentthroughproprietaryinnovationissubjecttothechangesbothintradeconditionsandin income distribution e ects arising from proprietary innovation.

Experience of foreign network economy development and Its Enlightenment to Shanghai

With the integration of various information technology, the Internet economy has gradually become the leading force to promote the development of the current global industrial revolution. Shanghai is one of the earliest areas of the Internet infrastructure construction in China, but also an important source ofChina＇s Internet economy. Today, the overall size of the Internet economy in Shanghai has been in the country, how to further enhance the international competitiveness of Shanghai＇s Internet economy has become one of the key tasks of Shanghai development. From the global perspective, this paper summarizes the development of foreign network economy, and then analyzes the development of network economy in developed countries and newly industrialized countries, and discusses the development experience, and summarizes the corresponding enlightenment of improving the competitiveness of the network economy in Shanghai.

Novel applications of bipolar single-valued neutrosophic competition graphs

Bipolar single-valued neutrosophic models are the generalization of bipolar fuzzy models. We first introduce the concept of bipolar single-valued neutrosophic competition graphs. We then, discuss some important propositions related to bipolar single-valued neutrosophic competition graphs. We define bipolar single-valued neutrosophic economic competition graphs and m-step bipolar single-valued neutrosophic economic competition graphs. Further, we describe applications of bipolar single-valued neutrosophic competition graphs in organizational designations and brands competition. Finally, we present our improved methods by algorithms.

New ideas on China＇s Foreign Trade Development Strategy

China has been a leader in export strategy since the reform and opening-up for trade. This has played a positive role in economic development, however, since stepping into a large country economy, entering the.WTO and the current development of economic globalization at a rapid rate, the leading export strategy has already been very difficult to adapt to the daily challenges in export because of the constant changes in domestic and international economic environment. In view of this, China should turn its strategy into one of dynamic comparative advantages with a global competitive strategy, in conformity with big country＇s economy in the economic background of globalization.

Cost dynamics of onshore wind energy in the context of China's carbon neutrality target

Wind energy has become one of the most important measures for China to achieve its carbon neutrality goal.The spatial and temporal evolvement of economic competitiveness for wind energy becomes an important concern in shaping the decarbonization pathway in China.There has been an urgent need in power system planning to model the future dynamics of cost decline and supply potential for wind power in the context of carbon neutrality until 2060.Existing studies often fail to capture the rapid decline in the cost of wind power generation in recent years,and the prediction of wind power cost decline is more conservative than the reality.This study constructs an integrated model to evaluate the cost-competitiveness and grid parity potential of China's onshore wind electricity at fine spatial resolution with updated parameters.Results indicate that the total onshore wind potential amounts to 54.0 PWh.The average levelized cost of wind power is expected to decline from CNY 0.39 kWh^(-1)in 2020 to CNY 0.30 and CNY 0.21 kWh^(-1)in 2030 and 2060.28.3%,67.6%,and 97.6%of the technical potentials hold power costs lower than coal power in 2020,2030,and 2060.