To alleviate project financial pressure and improve performance, the public-private partnership (PPP) arrangement was introduced by the central government of China to facilitate the sustainable development of infrastructure. However, arising government credit crisis from the PPP project may damage both the private’s and public’s interests, and affect the government performance of PPP projects consequently. In order to understand the influence between government credit and performance, we constructed a government credit evaluation index system by using the Wuli-Shili-Renli system theory, and conducted a questionnaire survey among people related to PPP based on 359 valid questionnaires. The results firstly indicated that government credit and performance of PPP projects are optimistic in China. Secondly, the institutional environment, financial situation, management technology and internal and external communication of government credit all have a positive impact on the government performance of PPP. Thirdly, the government credit and performance of PPP projects can be increased by the improvement of regional economic and social development. These findings enrich the knowledge system of the relationship between government credit and performance of PPP projects and contribute to clarifying the influence of government credit and performance, thus provide the basis for the government to guide PPP practice effectively.

Construction workers are often subjected to strenuous manual labor, poor working conditions, and prolonged separation from family, leading to psychological symptoms such as stress, depression, and anxiety. These psychological factors, combined with safety climate elements like risk perception and safety attitude, significantly influence workers’ safety behaviors, including risk-taking, safety compliance, and safety participation. To address these issues, this study investigates the interplay between psychological symptoms, safety climate, and safety behaviors among construction workers in Mainland China. Data were collected through a survey of 160 construction workers, with results analyzed using correlation and regression techniques. The findings reveal that: (1) risky behavior is primarily driven by anxiety and risk perception; (2) safety participation is influenced by safety attitudes and levels of depression; and (3) safety compliance is affected by risk perception, safety attitude, stress, and depression. Interestingly, an inverse relationship is observed between depression and both risky behavior and safety compliance. These results underscore the importance of addressing psychological well-being to improve safety outcomes. Practical implications include providing psychological counseling, stress management training, and improving social connections for workers, such as facilitating regular video calls with family members or offering travel reimbursements.

The normal distribution has many important properties and has a wide range of important applications in practice. This paper generalizes the related properties of one-dimensional and two-dimensional normal distributions to the related properties of n-dimensional normal distribution, and makes a summary and gives a more some detailed proof.