Agricultural high-quality development (AHQ) is an urgent need for the comprehensive promotion of rural revitalization today.Benchmark regression and spatial Durbin models were employed to investigate the effects of the coupling degrees of three sets of binary and ternary relationships-formed by ASTR allocation, AST innovation, and AHQ-on AHQ across each province from 2010 to 2020.The findings indicate that, overall, the coupling development among these systems plays a significant role in promoting AHQ. Specifically, the coupling degrees of both the binary and ternary systems markedly boost AHQ. However, when analyzed regionally, the degree of system coupling development exerts varying impacts on AHQ across the four major economic regions. Spatial econometric regression results further reveal that the coefficients for the impact of system coupling on AHQ, along with the spatial lag coefficients, are positive. This implies that the synchronized development of these systems not only positively affects local AHQ but also catalyzes AHQ improvements in neighboring regions. Therefore, this study suggests fully leveraging the unique strengths of each region in the integration of science, technology, and the economy, accelerating new quality agricultural productivity, capitalizing on the spatial spillover effects of system interactions on AHQ in adjacent areas, intensifying supply-side structural reforms in the agricultural science and technology sector, and enhancing the efficiency of ASTR allocation.

Focusing on the coordinated development of economic integration and cross-border trade in Guizhou Province, the role of economic integration in promoting cross-border trade was discussed by analyzing key factors such as policy environment and industrial synergy.It is found that Guizhou has achieved remarkable results in regional competitiveness, industrial upgrading and innovation ability, and cross-border trade has gradually become an important engine of economic growth in Guizhou.

The aviation material supply chain is an important part of ensuring the normal operation and punctual operation of civilian aircraft. A supply chain stability model based on pulses and uses MATLAB for numerical verification was constructed to explore the role of pulse intensity and occurrence in the stability of the supply chain. The research results show that pulses have a greater impact on supply chains that are not yet stable, and a limited impact on supply chains that are already stable. Appropriate pulses accelerate system adjustments and quickly reach a stable state.

To address the fatigue issues at the connection between legs and spudcans of jack-up platforms during oilfield production operations, a local finite element model of the spudcan was established. By considering wave loads from eight different directions and employing the spectral fatigue method, the fatigue life at the leg-spudcan connection was calculated. Additionally, the influence of spudcan-surrounding soil on the fatigue life of the connection was investigated. Results indicate that, under a 10-fold safety factor, the fatigue life at the leg-spudcan connection meets design requirements. Incorporating the effect of surrounding soil further improves the fatigue life at this critical joint.

Based on the results of the first national comprehensive natural disaster risk survey in Jiangxi Province, the deep integration of the results of the comprehensive risk assessment zone of the single disaster and the comprehensive risk assessment zone was discussed. Focusing on the prevention and control of natural disasters such as meteorology, floods, droughts, and geology, with Dayu County in Jiangxi Province as the research area,the development of a dynamic management and application analysis research system for the comprehensive risk zone of natural disasters in Jiangxi Province can provide technical support for the county-level “two committees and three departments” decision-making command.

Digitalization is driving the Industry 4.0 transformation globally. By establishing a multiple linear regression model that integrates the digital economy, environmental regulation, and carbon emissions into a unified analytical framework, the mechanism through which environmental regulation influences carbon reduction was explored. Furthermore, it investigates the moderating role of digitalization between the two and presents an intuitive analysis. The results indicate a significant inverted “U”-shaped relationship between environmental regulation and carbon emissions. The digital economy exhibits a green effect by reducing carbon emissions. The digital economy reverses the relationship between environmental regulation and carbon emissions, effectively moderating the “green paradox”, and regions with high intensities of environmental regulation are more likely to leverage the moderating role of the digital economy.

414 high-quality tourist attractions rated above 3A in Gansu Province were selected as research samples. Utilizing methods such as the nearest neighbor index and geographic concentration index kernel density, the spatial distribution characteristics and influencing factors of high-quality tourist sites in Gansu Province were explored. The final results show the overall spatial distribution of high-quality tourist attractions in Gansu Province is relatively concentrated, with high-quality attractions in regions including Hexi, Longzhong, and Longdong showing an aggregated distribution type.The overall distribution of high-quality attractions in Gansu Province presents an uneven state. At the regional level, high-quality attractions are mainly concentrated in the Hexi and southeastern Longdong areas; at the city level, they are primarily concentrated in Jiuquan, Zhangye, and Longnan.There are certain differences in the spatial distribution density of high-quality attractions in Gansu Province. A distribution pattern of “two cores, two belts, and multiple points” has formed across Gansu Province. At the regional level, high-quality attractions in the Hexi area have formed a multi-core spatial structure decreasing outward; high-quality attractions in Longzhong and ethnic regions exhibit a single-core distribution pattern with gradient diffusion outward,the southeastern and eastern Longdong areas do not show a high-density core area, with kernel density values decreasing from Tianshui and Qingyang outward. The spatial distribution pattern of high-quality attractions in Gansu Province has been formed under the combined effect of natural environment and socioeconomic factors.

In order to evaluate the feasibility of the application of drainage asphalt mixture with small particle sized aggregate in the maintenance of ultra-thin asphalt overlay, the rutting test, low-temperature bending test, freeze-thaw split test, Cantabro dispersion test, permeability test and pendulum friction coefficient test were conducted to evaluate the pavement performance and functional property of 8 drainage asphalt pavement composed of 4 kinds of asphalt binder and 2 gradation forms. And it was compared with large particle sized aggregate drainage asphalt mixture (OGFC-13). The results show that the asphalt mixture with PAC-5 gradation is better than OGFC-5 gradation in the form of high and low temperature performance, water stability, skid resistance and drainage performance. But the low temperature performance and water stability is inferior to OGFC-13 mixture. Epoxy asphalt binder is conducive to improve the overall pavement performance of drainage asphalt pavement, however, the functional properties such as drainage and anti-sliding have declined. Meanwhile, due to the expensive cost, SBS-SPT modified asphalt can be used as a substitute. Therefore, considering the results of various performance tests and economic costs, when using PAC-5 gradation, SBS modified asphalt and II modifier, the performance of drainage asphalt mixture with small particle sized aggregate is the best, which is expected to be widely applied to the maintenance of ultra-thin asphalt overlay.

Government officials, motivated by promotion, have unreasonably pursued the increase in the number of patents. As a result, innovation subjects only pay attention to the increase in the number of patents, ignoring the improvement of patent quality, and thus affecting economic growth. Based on the conflict between administrative incentive and market choice, the deep causes of the malformation of patent structure in China at the theoretical level were analyzed, and the fixed effect model was used for empirical analysis to verify it. It can be concluded that the crude quantitative assessment system leads to inefficient allocation of scientific and technological research resources, and a new assessment system based on quality and quantity must be established in order to completely change the deformed patent structure.

With the promotion and improvement of e-commerce shopping platforms, the online review information posted by users has become a key factor affecting consumers’ purchase preferences. The KAB(knowledge attitude behavior) theoretical model was used to construct the influencing mechanism of consumers’ purchase preference based on online reviews, and the experimental method was used to analyze the mechanism of perceptual diagnosis and product type in the whole framework. The results show that the credibility, richness and word-of-mouth of online reviews have a positive effect on consumers’ purchase preferences, and perceptual diagnosis plays a mediating role between online reviews and purchase preferences, and product type plays a moderating role in the influence of online reviews on perceived diagnosis and purchase preference.