New energy vehicles have two characteristics of energy saving and environmental protection, and integrate transformative technologies in artificial intelligence, Internet, big data and other fields. They are an important strategic measure to cope with global climate change and optimize the energy structure, as well as an important engine to cultivate new quality productivity. Based on Nanjing Metropolitan Area of new energy automobile industry development present situation, SWOT(superiority, weaknesses, opportunities and threats) method was used to study the advantages, disadvantages, opportunities and threats of new energy automobile industry development in Nanjing Metropolitan Area. Specific countermeasures are put forward to realize high quality development of new energy automobile industry in Nanjing Metropolitan Area, and bring new development opportunity and kinetic energy.

The increasing number of doctoral graduates year by year has brought new opportunities for the introduction of high-level talents in central provinces of China, and universities are the main units for introducing young PhDs. Taking 23 young PhDs who have joined universities in S province in central China in the past two years as research subjects, data was collected through interviews and the materials were analyzed based on the grounded theory research paradigm. It was found that the influencing factors of young PhDs’ employment choices in universities in central China are mainly divided into four categories: direct attraction factors, professional development factors, individual factors, and organizational factors. The employment choices of young PhDs are influenced by the push and pull effects of individual willingness and university support, as well as the dual effects of maintenance factors and incentive factors, with individual factors having the greatest impact.

Taking Mengniu Dairy’s acquisition of Miaoke Landuo as an example, the motivation and performance of dairy industry M&A was discussed to analyze the strategic considerations behind M&A and its impact on firm performance. Through literature analysis and case studies, qualitative analysis method was adopted, combined with financial data and market performance, to evaluate the effect of mergers and acquisitions. The results show that Mengniu’s acquisition of Miaoke Lando effectively expands its cheese product line, and improves its market share and brand influence. After the acquisition, Mengniu’s competitiveness in the high-end dairy market has been significantly enhanced, and its financial performance has improved, but it faces certain integration costs and operational challenges in the short term. It is concluded that M&A in dairy industry is helpful to achieve scale effect, product diversification and market expansion, but successful integration and synergies are the key to achieve M&A benefits.

As one of the most active regions in China’s economic development, various strategic emerging industries in the Yangtze River Delta has been continuously emerging in recent years. Since most of the strategic emerging industries are closely related to scientific and technological innovation, it is crucial to promote scientific and innovative finance to support the development of strategic emerging industries in the Yangtze River Delta. Firstly, the relevant policy background was sorted out, and the goal of the integrated development of strategic emerging industries in the Yangtze River Delta was drawn out. Then, the development status of scientific and innovative finance and strategic emerging industries in the Yangtze River Delta was sorted out, which highlighted the important role of scientific and innovative finance in the development process of strategic emerging industries in the Yangtze River Delta. Then, the problems of scientific and innovative finance in the development of strategic emerging industries in the Yangtze River Delta were summarized, including regional development imbalance, single financing channels, institutional guarantee to be improved, and scientific and technological innovation ecological construction to be strengthened. Finally, policy suggestions are proposed, including establishing a multi-level financial system for scientific and innovative finance, promoting the virtuous cycle of “science and technology-industry-finance”, accelerating the innovation and development of green science and technology, and improving the level of data intelligence of scientific and innovative finance.

Vertical joints are a key characteristic of loess, contributing to its strong anisotropies. This factor must be taken into consideration in engineering activities. The development mechanism of vertical joints in loess at great depths under the influence of dry-wet cycles was investigated, focusing on a highway tunnel passing through a loess irrigation area. The appropriate method was also explored for calculating this phenomenon. Through a comprehensive analysis of diffraction patterns and scanning electron microscopy, it was proposed that soluble salts in the loess play a key role in cementation. A significant amount of soluble salts dissolved in water and migrated downward during dry-wet cycles, disrupting the cementation of the loess. This results in a shift from point-to-point contact between soil particles to point-to-surface or surface-to-surface contact. Additionally, the recrystallization after migration leads to the development and expansion of fine pores in the loess. The continued expansion of the joint fracture volume also creates a pathway for further downward penetration of the water flow. This cyclical interaction between loess and water will facilitate the development of joint fractures at greater depths. The surface cracks and sinkholes in underground engineering activities carried out in similar strata are the visible signs of the progressive development of internal cracks in loess from the subsurface to the surface. The utilization of random joint mesh DNF in finite element software to convert joints into discrete, planar, and finite-size elements is a viable approach for representing the anisotropy of loess in calculations. It also introduces a new concept for the equivalent treatment of discontinuous problems using the continuous mechanics method.

Cities are important carriers of regional development, which can play a leading role in regional coordinated development, and the study of urban development level can better grasp the essence and direction of regional development. Based on the traditional gravitational model, a gravitational model was constructed to measure the gravitational strength between cities and the relative gravitational strength of a single city in Gansu Province in 2012 and 2022 with the help of relevant data of population, economy, society, ecology and transportation in 14 cities in Gansu Province, and the evolution of urban spatial gravitational network structure was analyzed. Based on the regional strategy of “one core and three belts” in Gansu Province, the study concludes that the core position of gravitational strength in Lanzhou is significant, and it has a driving effect on the surrounding cities. The Jiuquan-Jiayuguan area has become the sub-center of gravitational intensity, which has not had an obvious driving effect on the surrounding cities. There are significant differences in gravitational values among cities in different regions of the province. The gravitational network structure of urban space has gradually evolved from irregular to “pendulum-shaped” structure. The development of each city should formulate development strategies according to the actual situation of inter-city gravity and urban quality, so as to solve the current situation of backward development of the economic belt of the Hexi Corridor and the ecological function belt of the upper reaches of the Yellow River.

According to the problem of multiple attributes group decision making, in which the attribute values are given in terms of picture fuzzy numbers, a picture fuzzy multiple attributes group decision making model based on projection and cross entropy was established. The projection was introduced into the picture fuzzy multiple attributes group decision making to find the weights of the experts. The weighted symmetric discrimination information measure for PFSs of each alternative corresponding to each expert and the ideal alternative were obtained by using cross entropy, then according to the weight of the experts, the weighted symmetric discrimination information measure values of each alternative and the ideal alternative were assembled. The optimal alternative is obtained. Finally, an example is given to illustrate the practicality and effectiveness of the proposed method.

Taking five counties, Songpan County, Heishui County, Mao County, Li County and Wenchuan County in the upstream area of the Minjiang River as the research object, the data of the tourism-economy-ecological environment system (TEE system) of the five counties in the period of 2010—2023 was measured, and the comprehensive effect and the degree of coupling coordination were quantified by using the entropy method and the coupling coordination model. The spatial and temporal evolution characteristics and spatial differences of the coordinated development of different county systems were analyzed. The results show that the state of coordinated development of the TEE system in the five counties in the upper Minjiang River region is at a low level type. All five counties’ coupling coordination degree scores are below 0.3, and all of them are still in the state of severe or moderate dysfunction. The development of TEE system coupling coordination degree of the five counties upstream of Minjiang River is in the fluctuating upward trend, in which the development trend of tourism-economy system maintains rapid development, and the ecological environment system lags behind relatively. The evolution path of TEE system coordination in the five counties upstream of the Minjiang River is a gradual leaping path model, which can be divided into three specific subdivided situations, such as the “severe disorder” path, the “extreme disorder-severe disorder” path, and the “severe disorder-moderate disorder” path. According to the results of the internal coupling and coordination analysis, Songpan County and Heishui County belong to the tourism super-advanced type, while Mao County, Li County and Wenchuan County belong to the economic super-advanced type. The scores of the ecological environment system of the five counties are seriously lagging behind the tourism system and the economic system, and the ecological environment is under severe pressure. Finally, the five counties in the upper reaches of the Minjiang River are proposed to improve their TEE system by improving their spatial and temporal characteristics and laws.

Smart marketing in tourism accompanied by people’s emotional trigger points provides strategies for tourism marketing, and the role and mechanism of the influence of emotional trigger points and the integration of wisdom marketing on the perception of tourism brand authenticity are worth exploring. Cultural identity gives tourists a sense of belonging and motivates to explore the authenticity of tourism. From the perspective of cultural identity, the brainstorming method was used to select experimental stimuli, design scales and launch offline scenario experiments, and the recovered valid data were analyzed. The study explores the influence mechanism of cultural identity, emotional trigger points, smart marketing, experience value and brand authenticity perception. The results of the study show that tourists’ cultural identity, experiential value, and smart marketing all significantly and positively affect tourists’ perception of brand authenticity. The emotion triggered by smart marketing significantly and positively affects tourists’ experience; and consumers’ cultural identity is positively correlated with smart marketing. It is suggested that tourism destinations should focus on the cultural needs of tourists, highlight the special cultural connotations, and build a “wisdom + culture” model with the help of wisdom technology innovation to enhance the perception of tourism brand authenticity.

In the high-quality development stage, the data economy has become an important tool for achieving common prosperity. Using provincial panel data from 2011 to 2021 and treating the implementation of national-level big data pilot zones as a quasi-natural experiment, the policy’s impact on common prosperity was analyzed through a difference-in-differences approach. The results show that the policy significantly promotes the process of common prosperity. Further analysis reveals that the policy’s effect is more pronounced in western regions and large cities, with labor productivity acting as a mediator in this process.