The development model and strategy of Jiangxi’s animation industry in the context of the digital economy was explored, and a game model involving the government, animation enterprises, and the public was constructed using the evolutionary game theory. It is found that the level of the government’s digital technology investment and the local policy support significantly affect the strategy choices of each entity. The transformation cost of enterprises is crucial to their strategy, and low transformation costs and high innovation returns can increase the probability of digital innovation. The improvement of the digital literacy of the public has a significant impact on their participation behavior. Finally, a simulation analysis was conducted using MATLAB R2021a. Corresponding policy recommendations are put forward to promote the high-quality development of Jiangxi’s animation industry in the context of the digital economy.

With the acceleration of the global digital process, the digital business environment has become an important area to enhance national competitiveness. By using CiteSpace to biblimeasure and analyze 175 articles published on Chinese National Knowledge Infrastructure(CNKI) from 2013 to 2024, the research progress and trend of China’s digital business environment were explored. The research results show that the digital business environment can be divided into three stages, including desert, emergence and growth period. The research focus is on the development of digital government, digital trade, finance and other specific application fields. The application of digital technology, digital transformation of government service and policy support are closely related to its development.

Taking the No.1 tunnel of an irrigation district as the engineering background, the waterproofing design principle of “blocking water and limiting drainage” was adopted to explore the influencing factors of external water pressure under the composite lining condition of isotropic shallow buried tunnels. A simplified model of composite lining was established to analyze and derive the analytical solution of the variation in external water pressure and seepage volume in relation to the surrounding rock's permeability, grouting layer, lining permeability and head. At the same time, the Midas finite element software was used to calculate the water pressure and seepage volume under different conditions to verify the reasonableness of the analytical solution. The study shows that the permeability and thickness of the grouting ring have a greater influence on the water pressure and seepage volume outside the lining, and the construction of the grouting ring should be emphasized. With the increase of the depth of the drainage hole into the rock, the water pressure outside the tunnel lining gradually decreases. Therefore, in the environment of high groundwater head, setting drainage holes on the tunnel is the best effective measure to reduce the external water pressure.

Aiming at the complex geographical conditions of the mountainous rivers flowing through the region, which leads to the difficulty of the control measurement of waterway improvement, combined with the implementation of the control measurement of waterway improvement in Zigong section of Tuo River, the layout of control points analysis, selection of coordinate systems, and selection of methods for plane and elevation control measurement were conducted. Based on the characteristics of mountainous waterways, the optimal method for layout and measurement of plane coordinate systems is proposed. The research results can provide important references and inspirations for the subsequent control measurement of long river channel regulation in mountainous areas, which will promote the smooth implementation of long river channel regulation in mountainous areas.

Engineering projects are the core body of cooperation among countries along the “Belt and Road”. Mainly considering the environmental factor index, a national project construction cooperation factor evaluation system constructed, including 5 first-level indexes, 10 second-level indexes and 27 specific indexes. Using the relevant data from 2019 to 2023, entropy weight method and TOPSIS (technique for order preference by similarity to ideal solution) were used to quantitatively evaluate the degree of cooperation and its influencing factors in 64 countries and regions along the route. The results show that nine three-level indicators, such as the degree of government integrity, the legal perfection of GDP, and commercial convenience, have a significant impact on national engineering construction cooperation. There are obvious polarization and regional differences in the level of project construction cooperation among countries along the route.On the whole, the level of project construction cooperation in the “Belt and Road” countries has gradually improved.

In view of the centralized construction of pile foundation or large-scale excavation of foundation pit in rainstorm and typhoon weather, a technology for purification, treatment and recycling of construction sludge and wastewater is proposed. An integrated purification treatment device was used to form a sludge and wastewater treatment system that integrates sedimentation, purification and recycling. Flocculants, polyacrylamide, polyaluminum chloride were used to mix, mix and react with the sewage after three-stage sedimentation, so that the sewage solid-liquid can be separated into mud and clean water. Clear water can be recycled for on-site construction, car washing, watering and dust reduction, etc., achieving the effect of green economy, high efficiency and environmental protection, greatly improving the image of on-site civilized construction, and obtaining significant benefits.

The research results and trends of China’s recreational behavior in the CNKI(Chinese National Knowledge Infrastructure) database from 1994 to 2024 were analyzed by using CiteSpace. The results demonstrate that the number of articles published has undergone three distinct phases: the “budding period,” the “rapid growth period,” and the “fluctuating growth period.” The research results are grouped into three primary categories: recreational behavior and its influencing factors, utilization of recreational resources and protection and development, and the behavior of open space. The key topics in this field are recreational behavior, the elderly, open space, and urban parks. The research hotspots in this field are open space, leisure behavior, the elderly, open space, and urban parks. The research trends in this field are pocket parks, optimization strategies, landscape gardening, and parks and green spaces. In the future, it is suggested to deepen the theoretical system, improve the application of new technology and methods, and explore new perspectives of research.

With the frequent occurrence of public health emergencies and the increasing aging of society, the risk of public health emergencies in aging communities is also increasing, which brings great impact to the elderly group. In order to ensure the health and safety of the elderly population and the sustainable development of the aging community, a scientific, efficient, comprehensive and sustainable strategy for the aging community to cope with public health emergencies was provided. According to the three pillars of “health” “participation” and “security” in the framework of active aging, the aging community’s response to public health emergencies was analyzed, and the PDCA(plan-do-check action cycle) optimization framework for coping strategies of public health emergencies in aging communities was constructed from the perspective of active aging, and the corresponding optimization path is proposed accordingly. The PDCA cycle was integrated into the whole process of aging community response to public health emergencies, and it is constantly evaluated and optimized.

In order to improve the accuracy and efficiency of land and resources mapping, a rapid land and resources image mosaic method based on UAV remote sensing information was proposed. Firstly, by estimating the height and angle of aerial photography, the land and resources mapping images with high accuracy were obtained. Then, the corresponding feature detection algorithm combined with BRIEF (binary robust independent elementary features)algorithm was used to describe the feature rotation invariance. Next, KNN (K-nearest neighbor) algorithm was used to match feature points to achieve precise extraction. Finally, the SPHP (shape-preserving half-projective warps for image stitching)algorithm was used for image fusion, and the image mosaic is completed. The experimental results show that the designed land and resources image rapid splicing method can realize accurate mapping of land and resources, ensure the mapping efficiency, and has certain application value.

Based on the development of the digital economy and the uncertainty of demand information in the equipment manufacturing supply chain, the impact of government subsidies on the information sharing strategy under the equipment manufacturers quality innovation was explored. The price and quality innovation decision models for non information sharing and information sharing were established and solved, and the model results were analyzed. Results show that retailers sharing optimistic demand can definitely motivate equipment manufacturers to improve product quality, but it may not necessarily increase wholesale and retail prices at the same time. Moreover, it is only when government subsidies are high that it helps to increase the actual demand for products. Equipment manufacturers always benefit from information sharing, and designing an information compensation mechanism can increase the motivation for retailers to share, but this mechanism requires government subsidies to be within a certain range. In addition, the increase in government subsidies helps to enhance the consumer surplus value and social welfare value of information sharing.