In the context of the policy of promoting Xinjiang through tourism, the integration of culture and tourism not only promotes the rapid development of tourism in Kashgar, but also drives the prosperity and development of related industries around. Based on the panel data of Kashgar from 2017 to 2023, the impact of economic and social development in Kashgar was analyzed from the perspective of cultural and tourism integration. The entropy method was used to construct the comprehensive evaluation index system of cultural industry and tourism industry, and the coupling coordination degree of cultural and tourism industry was measured and analyzed. The results show that the improvement of cultural and tourism integration can effectively promote the economic development of Kashgar.There are differences between Tashkurgan County and Yuechupu County in terms of resource allocation, geographical environment and economic development level. From the perspective of regional differences, the impact of cultural and tourism integration degree on the economy of Tashkurgan County is more obvious than that of Yuechupu County.

The study of investment networks is crucial to the promotion of regional integration. Based on the data of enterprises’ outward investment from 2005 to 2022, the nodes, patterns and structural evolution characteristics of the investment network as a whole and in different industries were analyzed using social network analysis. The investment linkage matrix was also constructed and the SLM(spatial lag model) was used to explore the externalities of the investment network. The results show that the power polarization of investment network nodes is obvious, with Chengdu and Chongqing occupying an absolutely dominant position. The investment network power of manufacturing and financial industries shows ring and fragmented distribution, respectively. The investment network pattern evolves towards multi-core equilibrium, and the manufacturing network pattern is more mature. The investment network has an obvious core-edge structure, but the difference in core degree gradually decreases. The investment network has significant positive externalities on economic growth, showing a trend of decreasing and then increasing. The manufacturing investment network has a stronger role in promoting economic growth. Consumer markets and government policies are important factors driving economic growth in local and linked cities.

An in-depth study on the development of E-commerce in China was conducted using Kernel density estimation, Dagum Gini coefficient and decomposition method, and grey prediction GM (1,1) model. The conclusion shows that there is an imbalance in the development level of E-commerce in China within and between regions, with significant differences within the eastern region and the most significant differences between the eastern and western regions. The level of economic development, population size, urbanization, social consumption, and degree of openness in different regions affect the level of E-commerce development and regional differences. The forecast shows that China’s E-commerce will continue to grow in the future, but the existing gradient distribution pattern of east, west, central and western regions will not change in the short term.

Taking Sailun Group as the research object, the impact of ESG(environmental, social, and governance) practice of chemical enterprises on enterprise value was explored. Firstly, the situation of chemical industry and general situation of Sailun Group were introduced by case analysis method. Then, starting from the ESG practice of Cylun Group,the performance of ESG practice was analyzed in detail. Finally, comparative analysis and entropy weight method were used to analyze and summarize the overall operation status of Sailun Group. Grey relational analysis was used to analyze the relationship between ESG practice and enterprise value. It is found that the conclusion is drawn that the chemical enterprises taking Sailun Group as an example can fulfill the social responsibility while ensuring the enterprise value, and promote the realization of enterprise value with ESG practice. According to the conclusion, some suggestions on cost management of chemical enterprises are put forward.

RCEP (Regional Comprehensive Economic Partnership) provides broad space and opportunities for the optimization and upgrading of industrial structure in Guangxi, and promotes high-quality economic development in Guangxi. By conducting in-depth research on the opportunities and challenges brought by RCEP,reference for Guangxi is proposed to formulate a scientific and reasonable path for optimizing and upgrading its industrial structure. By using comparative analysis, the problems and challenges facing Guangxi’s current industrial structure were analyzed. A path for optimizing and upgrading Guangxi’s industrial structure under RCEP is proposed. Guangxi should fully utilize the policy dividends of RCEP to promote technological innovation, accelerate the development of digital technology, extend the industrial chain, highlight green development, transform traditional industries, optimize industrial structure, and optimize regional layout. raditional industries, optimize industrial structure, and optimize regional layout.

Starting from a low-carbon perspective, the relationship between the agglomeration of productive service industries, green technology innovation, and industrial green total factor productivity was explored through provincial research data from 2003 to 2021. The results show that the impact of specialized agglomeration of productive service industries on industrial green total factor productivity exhibits a “U” - shaped characteristic, while the impact of diversified agglomeration exhibits an “N” - shaped characteristic. The specialized agglomeration of productive service industries has a significant positive impact on industrial green total factor productivity through the mediating effect of green technology innovation, while there is no mediating effect in diversified agglomeration.There are differences in the impact results among the three major regions of East, Central, and West. The specialized agglomeration of productive service industries in the eastern region is more flexible, while the diversified agglomeration of productive service industries in the central region is more significant. It is found that a good agglomeration of productive service industries can accelerate the improvement of industrial green total factor productivity. Based on emphasizing development characteristics and growth models, targeted green technology innovation and precise policies can be implemented to construct a localized policy model for productive service industries with Chinese characteristics, providing policy references and theoretical guidance for promoting industrial green development.

Tunnel construction ventilation can effectively eliminate harmful gases and dust, and ensure the safety of construction environment. Taking an extra-long road tunnel as an example, the air demand for the construction of inclined shafts and tunnels was calculated with multiple working faces, choose the appropriate fan models, and the tunnel construction ventilation in stages was designed according to the construction progress of inclined shafts and main caves. A section of the split tunnel was used as a ventilation tunnel, and the roadway + pressurized ventilation method is adopted to shorten the length of the air supply ducts. FLUENT software was used to establish a three-dimensional numerical model of multi-working face construction ventilation, in-depth study of CO(carbon monoxide) diffusion regulations in tunnels. The results of the study show that CO migrates from near the tunnel face to the entrance in the form of “air mass”, and the migration rate is positively correlated with the ventilation wind speed in the tunnel.The location of the high CO concentration zone at the intersection of the inclined shaft gradually shifts to the right (low velocity zone) as the wind velocity ratio gradually becomes larger, and the maximum concentration gradually decreases.The wind speed ratio has no significant effect on the change of CO concentration in the left hole.

In response to the increasingly growing logistics delivery demands in rural areas, optimizing the last-mile delivery model, reducing delivery costs, and improving service quality have become urgent issues. Based on a parallel delivery model using delivery vehicles and drones, and considering the characteristics of logistics distribution in rural areas, aims to maximize total delivery profit by constructing a parallel delivery model that incorporates the specific features of rural areas. An improved ant colony algorithm was employed to solve the model, and the feasibility of the algorithm was validated using Solomon benchmark instances. The research results demonstrate that the parallel delivery of vehicles and drones has significant advantages over the traditional single-mode delivery of vehicles or drones.

Production optimization is a key component of closed-loop reservoir management, aimed at maximizing economic benefits by fully exploiting reservoir potential through the identification of optimal injection and production parameter schemes. The use of numerical simulators during the search for the optimal solution significantly increases time costs, making it challenging to rapidly determine the best scheme, despite its important engineering implications. An objective function for production optimization in waterflood reservoirs was constructed based on factors such as the reservoir numerical simulation model, optimized time steps, production and injection well control strategies, reservoir responses, and cost and profit parameters. Research was conducted on the method of using surrogate models to replace numerical simulators in production optimization, based on sampling criteria for the surrogate model. In order to address the lack of physical significance in surrogate models and the difficulty in achieving the same precision as numerical simulators during optimization, a relationship for an ensemble surrogate model was established. Validation results on two reservoir models, three-channel and Egg, show that the proposed ensemble surrogate model optimization method improves economic benefits by 4.81% and 4.75% respectively, compared to conventional optimization methods across all tested reservoir models. In order to verify the application effect of the proposed method in the actual oilfield field management scenario, the Bruges oilfield is taken as an example to carry out the test. The proposed integrated agent model optimization method can increase the economic benefit by 2.45% compared with the conventional optimization method. This proves that the proposed method can achieve satisfactory results in solving the problem of injection and production optimization in large-scale reservoirs.

Dynamic mechanism is an important direction, core and focus of building an important talent center and innovation highland in the world. The dynamic mechanism analysis framework of the world’s important talent centers and innovation highlands was conducted based on the push-pull theory, and reveals that the world’s important talent centers and innovation highlands are affected by three forces: push, pull and resistance. Based on the data of 40 countries from 2013 to 2021, the impact of population development on talent centers and innovation highlands was explored from the perspective of population. From the global perspective, the talent center and innovation highland show a trend of “strong west and weak east”, concentrated in North America and European countries, but the eastern countries began to rise, showing a trend of “rising east and falling west”. Population size will significantly positively affect the construction of the world’s important talent centers and innovation highlands. Population size has a significant positive impact on the construction of talent centers in high-income countries and the construction of innovation highlands in high-income countries. Population size has a significant negative impact on the construction of the world innovation highland in high-income countries. Finally, suggestions are put forward to give full play to the advantages of population, improve the overall quality of talents, gather international top talents and stimulate the vitality of talent innovation to promote the construction of China’s talent center and innovation highland.