Financial S&T expenditure is very important for promoting national S&T innovation and high-quality development. Firstly, the LP method was applied to measure the total factor productivity of enterprises and the economic transformation ability of fiscal S&T expenditures in Xi’an city was discussed. Secondly, taking the Xi’an listed companies in Shanghai and Shenzhen from 2012 to 2022 as samples, an empirical research on how fiscal S&T expenditures affect the TFP of enterprises was conducted through the method of matching with macro data. The results show that increasing the intensity of fiscal S&T expenditures helps to improve enterprise total economic productivity. In view of this, in order to improve the total industrial productivity of enterprises in Xi’an and to play the role of leverage of fiscal S&T inputs on economic development, not only the input-output structure of fiscal S&T expenditures should be considered, but also relevant suggestions should be put forward from the government’s point of view.

Based on the integration model of Technology Acceptance Model (TAM) and Planning Behavior Theory (TPB), taking rural water purification equipment as an example, policy regulations were introduced to study the safety of rural drinking water. The results show that perceived ease of use is a key factor affecting the willingness of rural consumers to use water purification equipment. Policy regulation has a significant impact on the willingness to use water purification equipment. Perceptual ease of use has a positive impact on subjective norms, behavioral attitudes and perceptual behavior control. Policy regulation has a negative impact on behavioral attitudes and perceptual behavior control. Behavioral attitude and perceptual behavior control also play a key role in determining the willingness to use water purification equipment, while subjective norms have no significant impact on the willingness of rural consumers to use water purification equipment.

Since 2021, China has opened its three-child policy, and the relevant supporting measures to support fertility have been continuously improved at the national and local levels. However, the number of newborns and the birth rate have not met expectations. Based on the 2021 China General Social Survey (CGSS) data, the unordered multiple classification Logistic regression model was used to explore the impact of the number of children on the labor force participation of reproductive women.The results show that the increase in the number of children will reduce the participation level of reproductive women in non-agricultural labor and increase the probability of non-participation in work. In addition, women’s age, education level, spouse’s labor participation status, spouse’s annual income, family residence, whether they live with their spouse, and family annual income all affect the labor participation status of women of childbearing age.

To evaluate the comprehensive benefits of urban renewal, Shijiazhuang City was selected as the main research object, with Zhengzhou City serving as a reference. Based on urban renewal data from 2014 to 2022, an index system encompassing economic, social and environmental benefits was constructed. The comprehensive benefits of urban renewal in these cities were quantitatively analyzed using DEA and EWM methods. The results indicate that Shijiazhuang’s urban regeneration benefits from 2015 to 2017 are not DEA-efficient, exhibiting an increasing trend in the coefficient of returns to scale, and a large input redundancy and output insufficiency rate. In contrast, for the remaining years, the results demonstrate strong DEA efficiency with constant returns to scale, and input redundancy and output insufficiency rates remained at normal levels. Meanwhile, Zhengzhou exhibits strong DEA efficiency with constant returns to scale throughout the entire period. In terms of input and output levels, Shijiazhuang’s urban renewal from 2014 to 2018 is characterized by low input and low output. In 2019, it shifts to low input and high output, and from 2020 to 2022, transitions to high input and high output. Shijiazhuang’s urban renewal efforts primarily focuses on social rights and interests, while Zhengzhou emphasizes economic benefits. The comprehensive benefit score of urban renewal in Shijiazhuang shows an upward trend from 2014 to 2022, with rapid growth before 2018 and slower growth after 2019. Zhengzhou’s comprehensive benefit score follows a similar upward trajectory, although at a lower level than Shijiazhuang. Finally, suggestions for urban renewal development are provided to offer valuable insights for high-quality urban development.

Scientific data management policy plays an important role in standardizing data management and promoting scientific research innovation. The quantitative analysis of the current policy is helpful to provide reference for the formulation and improvement of relevant policies in the future. A four-dimensional analysis framework covering policy objectives, policy tools, policy themes and governance fields was constructed, and a variety of text analysis methods were comprehensively adopted to carry out a cross-dimensional and multi-dimensional comparative analysis of relevant policy texts. The results show that China has established a relatively perfect scientific data management policy system, but there is still room for improvement. In the future, policy objectives can be further optimized, policy contents can be refined, the design of implementation supervision mechanism can be strengthened, the application of demand-oriented policy tools and the synergy of policy tools can be enhanced.

To promote urban-rural integration and establish an internal circulation channel between urban and rural areas, it is necessary to facilitate the flow, interaction and balanced allocation of the four dimensions of people, land, industry and governance. Taking Longweiba Village in Zhangjiajie City, Hunan Province as a case study, the symbiosis theory from ecology to analyze the synergistic dynamic evolution process of “people-land-industry-governance” in rural areas was employed. Based on the framework of “symbiotic unit-symbiotic environment-symbiotic mode” derived from symbiosis theory, a synergistic development path for rural areas was proposed, in order to activate the vitality of rural population, land, industry, governance and other elements, achieve new endogenous rural development, and provide referential experiences and suggestions for other rural areas.

Aiming to study the driving effect of industrial digitalization on the high-quality development of equipment manufacturing industry in Liaoning Province was mainly studied, the data of Liaoning Province from 2013 to 2022 was used as the research sample, entropy method and DEA-Malmquist index were used respectively to measure the high-quality development level of industrial digitalization and equipment manufacturing industry in Liaoning Province. On this basis, the ordinary least square method to do empirical research was used. The research shows that industrial digitalization has a significant driving effect on the high-quality development of the equipment manufacturing industry in Liaoning Province, which is significantly positive at the level of 1%. The application of digital technology should be strengthened to achieve quality and efficiency improvement and digital transformation and upgrading, so as to realize the high-quality development of the equipment manufacturing industry in Liaoning Province.

Based on the analysis of the development situation of gazelle enterprises in Fujian Province, 19 variables were designed to analyze the innovation ecosystem from four dimensions of innovation ability, scientific research environment, factor cooperation and location development, and the influencing factors were quantified. Six variables were selected by LASSO regression and elastic net regression and included in the random forest for empirical analysis. According to the degree of importance, the influencing factors are ranked in order of the number of inventors, human capital, the number of utility model and design patents, patent citations, technical relevance, and population density. Finally, some policy suggestions are put forward, such as tapping the potential and vitality of innovation subjects, improving the construction of innovation platforms, optimizing the structure of human capital, and improving the environment for innovation and entrepreneurship.

Scientific and technological innovation is an important driving force to achieve sustainable and high-quality development and transformation and upgrading of the industry. Taking innovation input, innovation output and innovation support as the main evaluation indexes, an evaluation system of science and technology innovation capability for hardware industry was designed and constructed. Taking the hardware industry of Yongkang in Zhejiang Province as an example, TOPSIS method was used to test and analyze the reasonability and effectiveness of the constructed evaluation system, and an empirical analysis of the four major industries of cup industry, door industry, other daily hardware and tool hardware was made in Yongkang, Zhejiang Province. Corresponding construction countermeasures are put forward. The relevant research results have certain guiding value for the promotion of scientific and technological innovation ability and industry optimization and upgrading of the hardware industry.

In order to effectively enhance the service quality of airports, the optimal scaling method was employed to conduct a spatio-temporal characteristic analysis of the airport passenger complaint data from the official website of the Civil Aviation Administration of China from 2010 to 2018. The following conclusions are as follows. Regarding temporal characteristics, passengers pay more attention to comfortance during the transportation off-season, punctuality during the transportation peak season, and convenience during the transportation low season. Regarding spatial characteristics, the complaint themes in East China and Central-South China regions are more inclined towards comfort, those in Southwest and North China regions are more inclined towards punctuality, those in Northwest and Northeast regions are more inclined towards convenience, and those in Xinjiang region are more concerned about safety. Countermeasure suggestions are provided to tailor measures to suit local conditions to the specific time and manage the whole process of the dealing about complaints.