No-load and load tests are routine tests for transformers. The test equipment required for no-load and load tests of large transformers is bulky and heavy, and the test equipment needs to be lifted, fixed, transported, unloaded, and reassembled and wired. This process has certain transportation risks and low efficiency. To solve this field test problem, this paper designed an No-load and load test platform by using SolidWorks, and integrated variable frequency power supply, intermediate transformer, instrument transformer set, capacitor set and other test equipment into two test vehicles. Through gravity center analysis, 3D mechanical simulation, equipment bolt fastening scheme design, and finally developed the test platform according to the analysis results. After long-distance driving and field test, the on-board equipment is stable and has no eccentricity or deviation problem, and the field test efficiency is increased by 3 times.

To effectively address issues such as difficulties in material dispatching caused by emergencies, it is necessary to select the location for an emergency material reserve depot in H Province. Through literature analysis and expert interviews, a total of 14 secondary indicators was constructed across five categories, including natural factors, economic factors, and policy factors, among others. A hierarchical analysis method was used to determine the weights of these indicators, while a cloud model was employed to calculate the cloud parameters for different candidate locations. The results indicate that economic and natural factors carry greater weight within the evaluation system. Among the three candidate sites, Site Q has the highest evaluation rating and is thus considered the optimal location for the emergency material reserve depot. This conclusion offers decision-makers a solid scientific foundation for selecting an optimal location.

With the rapid development of the aviation industry, the service environment for aircraft has become increasingly harsh, and the demand for surface performance is higher than ever. Spraying is an important method to enhance properties such as corrosion resistance and oxidation resistance, and it is widely used in the aviation field. Compared to traditional manual spraying methods, automated spraying robots offer several advantages, including high precision, high efficiency, and consistent thickness, playing a more and more important role in the preparation of surface coatings for aircraft skins and engine components. The current application status and research progress of automated spraying technology in the aviation field were briefly described, and on this basis, the main technical challenges and future development trends were discussed.

Implementing the strategy of Rural Revitalization is an inevitable choice to solve the main social contradictions. Under the background of new urbanization, promoting the comprehensive revitalization of the countryside must be based on the countryside, but it cannot be confined to the countryside, it needs to find a more integrated regional space as an effective carrier and an important fulcrum. Because of its special status and unique functions of towns and villages, industry and agriculture, citizens and farmers, county could be used as a basic unit to effectively implement the strategy of rural revitalization and promote the integration of urban and rural development. By promoting the integration of industries with agriculture as the main body, improving public services with rural areas as the main body, and building rural development with farmers as the main part, it is expected to be helpful to explore the comprehensive revitalization of rural areas under the background of new urbanization in counties.

In order to understand the influence of researchers’ academic grit on innovation performance, Yuan Longping, the father of hybrid rice, was taken as the research object. Using grounded theory, the biographical data and interview data were coded and analyzed. It is found that academic grit includes a two-dimensional structure, namely, consistent goals and sustained effort. Both dimensions have a positive impact on innovation performance. Courage, psychological capital, social support system, and interest are correlated with grit quality and innovation performance. Therefore, it is recommended to take the cultivation of academic grit of researchers seriously to enhance their psychological “innovation endogenous force”.

With the rapid development of information technology, cultural digitization has become an important means of cultural protection and inheritance. Based on “CNKI Database” and “WoS database” from 2014 to 2023, CiteSpace software was used to carry out cultural digital visualization analysis. The results show that in the past decade, the number of publications on cultural digitalization research has shown an overall increasing trend. Digitalization, cultural heritage, protection, inheritance, cultural industry and three-dimensional scanning are high-frequency co-occurrence keywords in cultural digitalization research. Digital technology and cultural digitalization, cultural heritage digitalization, cultural participation and accessibility of special groups are hot topics in foreign research. Cultural undertakings, industrial development and cultural self-confidence are hot topics in domestic research. In the future, more attention should be paid to technological integration and innovation, addressing the challenges of copyright and intellectual property rights, interdisciplinary cooperation and cultural sustainable development, and enriching the content of cultural digitization research.

Proof of concept is an important link in the long chain of transformation of scientific and technological achievements. At present, the proof-of-concept center is being supported by more and more regions in China to open up the “first mile” of the transformation of scientific and technological achievements into industrialization. However, as a new innovation carrier, the construction of the PoC Center is facing many problems and challenges. On the basis of investigating multiple proof-of-concept center across the country, the exploration practices of different regions were sorted, and the current development characteristics, beneficial experiences and existing problems were summarized. It aims to provide reference and guidance for the country and regions to support and promote the proof-of-concept center better, in order to accelerate the transformation of scientific and technological achievements, and cultivate and develop new quality productivity.

Constructing a comprehensive evaluation index system for the level of new quality productivity in the Yellow River Basin, using the hierarchical vertical and horizontal grading method and the TOWA-GA mixed operator to dynamically measure the level of new quality productivity in 9 provinces in the basin from 2013 to 2022, and exploring the spatiotemporal evolution characteristics of the level of new quality productivity in the Yellow River Basin using kernel density estimation, Markov chain, Dagum Gini coefficient, and Moran index. The research results indicate that the overall level of new quality productivity in the Yellow River Basin has significantly increased; In the next year, there is a high probability that the level of new quality productivity in 9 provinces will remain unchanged; There are significant differences and spatial positive correlations in the level of new quality productivity between regions, showing heterogeneity, imbalance, and clustering limitations in spatial distribution.

With the development of economic level, the agricultural industrial structure is also constantly adjusted. Based on the time series data of Guizhou Province from 1988 to 2022, the function of agricultural output value was constructed, and the vector autoregressive (VAR) model and the autoregressive distributed lag (ARDL) model were used to analyze the correlation of planting industry, forestry industry, animal husbandry industry and fishery industry in the total value of agricultural industry in Guizhou Province. The empirical results show that planting and animal husbandry are the main driving forces of the total agricultural output value in Guizhou province, while forestry and fishery have little influence. It is suggested to focus on optimizing the development strategy of planting and animal husbandry, and promoting sustainable agricultural practices and ecological breeding modes, adjusting forestry development strategy, balancing short-term economic benefits and long-term ecological benefits, developing understory economy. The fishery industry should develop steadily and promote fine breeding and ecological breeding technology. At the same time, all industries should strengthen industrial coordination and the government should formulate differentiated policy support to give full play to the advantages of all industries, improve production efficiency and promote the sustainable and stable growth of the total agricultural output value.

With the coming of the information age, mobile information technology represented by mobile devices and wireless networks, is becoming increasingly popular. It is profoundly affecting all aspects of residents’ production and life, including leisure. With the continuous development of social economy, the urban middle class has gradually expanded and become the largest consumer group supporting the urban leisure industry. However, the existing studies pay less attention to the middle class. Based on the leisure questionnaire data of the middle class in Guangzhou, factors such as self-efficacy, availability, dependence of mobile information technology use and socio-economic attributes were selected, a structural equation model was constructed, and the impact of mobile information technology use on the leisure activity choice of the middle class was discussed. It is found that the self-efficacy, availability and dependence of mobile information technology of middle class are significantly positively correlated. The dependence degree of mobile information technology of middle class has a significant direct impact on leisure activities, and the self-efficacy and availability of mobile information technology of middle class have a significant indirect impact on leisure activities by influencing the dependence degree of mobile information technology. The availability of mobile information technology to the middle class also affects their self-efficacy. The study shows that if the middle class has easy access to mobile information technology, has a high sense of self-efficacy towards mobile information technology, they will be more dependent on mobile information technology for leisure activities, and they are more inclined to choose physical leisure. In addition, age, gender, income, occupation, family child ownership and car ownership also have a significant impact on the choice of leisure activities. High income and older middle class prefer physical leisure. Compared with women, the male middle class prefers physical leisure. The middle class who work freely in time and space prefer online leisure. The middle class, with more children and more cars, tend to prefer physical leisure.