Latest ArticlesInvestment in new infrastructure facilitates green transformation of industries and promotes green economic and social development. Using panel data of provinces from 2013 to 2022, a comprehensive evaluation system of new infrastructure and green transformation of industries was constructed. Based on the coupling coordination degree model, the results indicate that the development levels of new infrastructure and green transformation of industries have steadily increased during the research period, with the coupling and coordination degree gradually evolving towards a coordinated state. The development of the new infrastructure and green transformation of industries exhibits significant regional differences, with outstanding performance in the east and lower comprehensive development in the central, western and northeastern regions. While the level of green transformation in most resource-based regions has improved, they are still lagging behind the national average level. Overall, the coupling coordination level displays a pattern of high in the east and low in the west.
To explore the emerging research field of cross-border e-commerce, a bibliometric approach was adopted to conduct a comprehensive analysis of relevant literature on cross-border e-commerce in CNKI. The analysis covered the publication trends of cross-border e-commerce, the cooperation among major research institutions and core authors, as well as the current research hotspots and frontier shifts. The study finds that the research process of cross-border e-commerce can be divided into three stages such as initial sprouting, vigorous development and mature optimization. During this period, although some research institutions and authors have initially formed a cooperation network, the depth and breadth of cooperation still need to be improved. The research focus has gradually shifted from topics such as cross-border logistics and the Belt and Road Initiative to areas such as the digital economy, digital trade and expanded opening up. Future research on cross-border e-commerce should focus on areas such as the digital economy, digital trade and expanded opening up, and strengthen cross-university and cross-regional cooperation to enhance the innovation capacity of research.
In order to enrich the materials for studying the landslides dam and dammed sediments in the Dadu River Basin. The newly discovered the Hetaoping landslide dam in the middle reaches of the Dadu River was studied. The landslide characteristics, the weir depositional characteristics of the river blockage formation and the landslide formation mechanism were studied through detailed field geological investigations and profiling methods. The field investigation results are as follows. The Hetaoping landslide dam plane area of 2.5 km2, the total volume of about 400×104 m3. The phase change characteristics exhibite vertically in the weir depositional profile reflect that the weir has undergone the evolutionary process of formation, deposition and outburst, and that the landslide has locally occurred multi-phase sliding characteristics. The formation mechanism of the Hetaoping landslide dam is divided into four stages, that is unloading rebound stage → dumping deformation stage → dumping expansion fracture stage → landslide formation plug river stage.
The development of advanced manufacturing clusters is an inevitable requirement for Shandong to build a strong manufacturing province, and it is also an important focus for overall development and security. In the context of the unstable global political, economic and trade environment, the resilient development of advanced manufacturing clusters will become the key to resisting risks and promoting growth. On the basis of combing the development effectiveness of advanced manufacturing clusters in Shandong Province, the shortcomings and bottlenecks faced by the development of clusters were analyzed, the mechanism framework for the formation of the resilience of advanced manufacturing clusters were studied and proposed. Countermeasures and suggestions are put forward for improving the resilience of advanced manufacturing clusters in Shandong Province from the three levels of promising government, effective market and strong society, in order to provide an effective reference for promoting the advanced manufacturing industry in Shandong to move towards the middle and high-end and improving the resilience and safety level of the industrial chain and supply chain.
Based on data from 50 manufacturing listed companies in Henan Province from 2019 to 2023, the DEA-BCC model and Malmquist index were employed to evaluate corporate operational performance from both static and dynamic perspectives. The findings reveal that the average comprehensive efficiency of the 50 manufacturing listed companies in Henan Province during from 2019 to 2023 is 0.834, primarily constrained by pure technical efficiency and scale efficiency. The total factor productivity of the sample companies is less than 1 and showes an overall declining trend, mainly due to a decrease in the technological change index. Based on these results, several recommendations are proposed for the future development of Henan's manufacturing sector, aiming to address regional development imbalances and enhance corporate operational performance.
Coordinated development is the inevitable requirement and driving path for the three major industrial clusters of electronic information, automobiles, and equipment manufacturing to achieve high-quality development and cultivate world-class industrial clusters. An in-depth analysis of the current status of the coordinated development of electronic information, automobile and equipment manufacturing industrial clusters in the Chengdu-Chongqing region was conducted. The research finds that Chengdu-Chongqing region has achieved good results in regional linkage, industrial chain cooperation, collaborative innovation, talent training and shared cooperation. However, it still faces problems and challenges, such as homogeneous industrial structure, weak industrial chain, insufficient innovation resources, unbalanced talent finance and low digital collaboration. Therefore, corresponding countermeasures and suggestions are put forward from six aspects, such as industrial planning coordination, industrial chain cooperation, innovation resource aggregation, talent policy collaboration, financial integration and industrial digitalization.
Glaciers serve as indicators of climate change, and their changes in reserves and distribution have significant impacts on downstream ecology and human security. Taking A’nyemaqen mountain as the research area to study its changing characteristics, reference was provided for regional ecological environment protection and economic and social development. Using Landsat data and Sentinel-1A data to extract the area and surface velocity of the A’nyemaqen glacier, combined with temperature and precipitation data from two nearby meteorological stations in the study area, the relationship between glacier changes and climate in the region from 2014 to 2020 was analyzed. From 2014 to 2020, the number of glaciers increased from 80 to 85, an increase of 5 glaciers. The glacier area has retreated from 98.46 km2 to 86.58 km2, a retreat of 11.88 km2. The A’nyemaqen Glacier shows an overall trend of retreat, with glacier flow velocity greater at the central axis than at the two wings and gradually decreasing from high to low altitude to the end of the ice tongue. The temperature and precipitation in the research area have shown an increasing trend, with a more significant increase in precipitation. However, the glacier area still shows a shrinking trend, indicating that the amount of glacier melting is greater than the cumulative amount.
With the rapid development of mountain highway construction, frequent high-positioned collapse disasters have posed serious threats to road traffic safety. Based on a typical high-positioned collapse case along a highway in the western Sichuan Plateau, geological surveys and numerical simulation analysis were employed to reveal the formation mechanisms of high-positioned collapses, analyze collapse energy, and propose a hierarchical passive protection combined with monitoring prevention method. The results indicate that unfavorable topographic and geological conditions serve as fundamental factors, with long-term weathering exacerbating structural plane deterioration. Rainfall acts as a triggering factor, where rainwater infiltration induces creep deformation of unstable rock masses leading to collapse development. The prevention method utilizing passive nets, open-cut tunnels, and intelligent monitoring systems proves effective for collapse control. This protection scheme can be promoted for application in canyon geomorphological regions.
Since the reform and opening-up policy was implemented in 1978, China has loosed its household registration policy and rapidly advanced the construction of urbanization. The pattern of population migration has shifted from planned migration to autonomous migration. The Jiangsu-Zhejiang-Shanghai region has experienced a significant increase in the scale of the in-migration population, thence it is highly meaningful to research its driving mechanisms. Based on the in-migration data in the sixth population census, a multivariate linear regression model was constructed by the independent variables, such as the resident population, per capita GDP, per capita employment wage, per capita medical beds, population with a college degree or above and distance. Furthermore, the hierarchical Bayesian theory was introduced to reduce the indeterminacy of parameter estimation. The results show that economic factors serve as the primary driving force. Population factors, the education factor and distance factor also play important roles, while the medical factor has a relatively weak effect.
In order to study the deformation and failure mechanism of a high steep slope under underground excavation, the influence of different locations of tunnel excavation on slope stability was analyzed by using the finite element sliding surface stress method, and the failure mechanism and deformation characteristics of slope instability induced by underground excavation were systematically studied. The results show that the underground excavation destroys the original equilibrium system of the slope, redistributes the stress of the slope in the influence range of the excavation, and creates new tensile stress regions, compressive stress regions and shear stress regions in different areas of the slope, which causes adverse additional displacement on the surface and internal points of the slope, and thus has a significant impact on the stability of the slope. According to the position relationship between underground excavation holes and sliding surface, slope instability induced by underground excavation can be divided into four types, which are local slope collapse, slope A-type slip, slope B-type slip and slope C-type slip, and the failure process and mechanical mechanism of each type of instability are revealed.