Credit risk, due to its high frequency and significant impact, is regarded as an intolerable risk and a critical factor influencing public-private partnership projects. The emergence of various credit risk issues can severely harm both private and public interests. Existing research and conducting an in-depth study of relevant core literature from the Web of Science and CNKI databases between 2010 and 2024 was reviewed by using VOSviewer and CiteSpace software. It is revealed that infrastructure projects, risk assessment, project bonds, and the selection of private sector partners are pivotal research themes in this field. Moreover, emerging collaboration models, ESG (environmental, social, and governance) factors, the application of new technologies, and cross-border cooperation are identified as promising directions for future exploration.

Humanoid robots are one of the important development directions of the future-oriented industries. With large development potential and wide application prospects, humanoid robots have become new high ground for technological competition and new engines for economic development.By comparative analysis the strategy and policy of global technology powers and domestic cities for humanoid robots, some suggestions are proposed. Guangzhou should adapt measures suiting local conditions,promote the development of humanoid robot industry from breakthroughs in core technologies in key fields, expansion of typical application scenarios,construction of industrial ecology, support of industrial elements,develop new quality productive forces at a faster pace.

Digital economy level evaluation system and Guangzhou urban-rural integration level system were constructed to further calculate the digital economy level and urban-rural integration level in Guangzhou. The following results are obtained: digital economy has a significant positive impact on promoting the integrated development of urban and rural areas in Guangzhou.The improvement of human capital level, urbanization level, the increase of agricultural expenditure, and the narrowing of the gap between urban and rural Engel coefficient can all promote the development of urban-rural integration in Guangzhou, However, although the coefficient of the network traffic density is positive for the urban-rural integration of Guangzhou, But the effect is not obvious.Digital economy promotes the coordinated development of urban and rural areas in Guangzhou through its economic development, capital flow, rural industry revitalization, social security and equalization of public services.

Taking the integrated development of cultural and tourism industries in Yangquan urban area as the research object, the potential of cultural tourism resources, basic conditions for urban-rural integration, surrounding consumption base, and government support measures were evaluated. Then, the overall positioning, spatial layout, and market group positioning were analyzed. Based on the analysis of development potential and positioning, the planning and layout were carried out with a focus on the Baituan Battle Site Park. Finally, research on marketing methods and security measures was conducted. The research results indicate that tourism resources are abundant and have enormous development potential in Yangquan. The planning layout is operable. The implementation of marketing methods is strong and the guarantee measures can fully ensure sustainable development.

The Huanglan coal mining area is the most threatened mining area in Hunan Province by water hazards, which seriously affects the sustainable development of the local coal industry. Accurate detection of hidden water hazards can effectively reduce the probability of hidden dangers, and exploring more efficient technical methods and using high-precision detection instruments are effective ways to solve this problem. Multi-polarized magnetotelluric technology (MPMT) measures electric field polarization at different polar distances at a common center point to obtain Kania resistivity at different polar distances, thereby obtaining more dimensional electric field data, local anomalies, and background data, which can more efficiently meet the needs of geological body detection in complex geological environments. According to the hydrogeological conditions of the Huanglan mining area, the multi-polarized magnetotelluric method was used to carry out work, analyze its application effect and electrical properties of the mining area, and prove the effectiveness of the method through known water body experiments and apply it to the whole area of water hazard exploration. The comparison between the interpretation results and the actual excavation conditions of later tunnels proves the accuracy of the method, providing a scientific basis for the design of drainage tunnels, drainage measures, and safety prevention of groundwater in the Huanglan mining area.

In order to achieve innovation-driven development, county is the bias and vitality, but which is difficulty. Based on the monitoring and evaluation data of science and technology innovation of counties in Hebei Province from 2020 to 2021, the spatial econometrics method was used to study the spatial distribution characteristics, spatial aggregation and spatial spillover effect of science and technology innovation. The results show that the northwest region of Hebei is the lagging cluster area of scientific and technological innovation, while the central and eastern region adjacent to Beijing and Tianjin is the developed cluster area, which presenting the spatial pattern of “collapse in the northwest and rise in the central and eastern regions”. From the perspective of spillover effect, county science and technology innovation-economic development, county science and technology innovation input-county science and technology innovation output have spatial spillover effect.

Innovation and entrepreneurship education encourages college students to actively participate in innovation and entrepreneurship activities, stimulate the innovation vitality and creative potential of the whole society, and promote the economic transformation and upgrading. Taking 6 780 valid questionnaires from comprehensive colleges and universities in Shandong Province as research samples, an evaluation scale of college students’ innovation and entrepreneurship behavior were constructed to identify the influence mechanism of “dual-creation” education on “dual-creation” behavior, and provide empirical evidence for colleges and universities to deepen the reform of innovation and entrepreneurship education and to explore the potentials of innovation and entrepreneurship among students, which provides empirical evidence for universities to deepen the reform of innovation and entrepreneurship education and explore students’ innovation and entrepreneurship potential. In the future, the government and universities should continue to broaden the channels of innovation and entrepreneurship practice by system construction, realize “theory+practice” teaching by curriculum integration, and create a good atmosphere of innovation and entrepreneurship by resource support, so as to contribute to the transformation and upgrading of the economy and the innovative development of the society.

With the development of information technology, it has become common for employees to use electronic devices to handle work affairs during non working hours(work connectivity behavior after-hours), and the reaction of employees to this behavior is still uncertain. Therefore, based on the theory of resource conservation, the impact of work connectivity behavior after-hours of employees on workplace deception behavior was explored. Through data analysis of 307 employees, it is found that work connectivity behavior after-hours has a positive impact on employee workplace deception behavior.Job burnout has a mediating effect between work connectivity behavior after-hours and employee workplace deception behavior.Organizational support has a negative moderating effect on the relationship between work connectivity behavior after-hours and job burnout. These conclusions not only expand the research field of employee workplace deceptive behavior, but also provide useful suggestions for organizations to suppress workplace deceptive behavior.

In the era of digital economy, smartphones have become an indispensable tool for modern people.However, the silver-haired people often face the problem of “difficult to use” when using smartphones and other intelligent products. In order to study the impact of smartphone use on the subjective well-being of the elderly, a questionnaire survey and field visits were conducted among the elderly in some areas of Hunan Province, and the happiness-related statements in the survey data were extracted, and descriptive statistical analysis, correlation analysis and regression analysis were used to determine the factors that affect the subjective well-being of the elderly as well as the well-being score index. The results show that the use of smartphones has a positive impact on the subjective well-being of the elderly, which not only improves the quality of life of the elderly and promotes their enjoyment of the technological dividends of the times, but also facilitates the work of active aging and the comprehensive development of society.

Under the background of “dual carbon”, it is of great significance to comprehensively clarify the dynamic decoupling relationship between tourism carbon emissions and tourism economic development for the formulation of scientific tourism carbon emission reduction policies. The “bottom-up” tourism carbon emission measurement method was used to measure the tourism carbon emissions in Yunnan Province from 2010 to 2022, and on this basis, the Tapio decoupling model of tourism economy and tourism carbon emissions was constructed, and the decoupling relationship was analyzed. The results show that from 2010 to 2019, tourism revenue and tourism carbon emissions in Yunnan Province showed an upward trend, and in 2020, they decreased significantly, and from 2021 to 2022, Yunnan Province’s tourism revenue showed an upward trend, but the overall carbon emissions of tourism showed a downward trend, reflecting the low-carbon development of tourism in Yunnan Province. The contribution rate of tourism transportation carbon emissions to tourism carbon emissions in Yunnan Province is the largest, with an average proportion of 78% during the study period, and reducing tourism transportation carbon emissions is the key to low-carbon emission reduction of tourism in Yunnan Province. During the study period, the carbon emissions of tourism in Yunnan Province were mainly weakly decoupled, with high-quality strong decoupling in 2006 and 2022, and only in 2020, which generally reflected that Yunnan Province has achieved certain results in promoting energy conservation, emission reduction and low-carbon development of tourism.