Smartphones have become an integral part of people’s daily lives. While bringing convenience, mobile phone addiction caused by overuse of smart phones has become a common phenomenon among college students. The current study aimed to examine the serial mediating role of psychological resilience and perceived stress between physical exercise and mobile phone addiction of college students. Using the PARS-3 scale, CD-RISC-10 scale, PSS-10 scale, and MPA scale, 257 college students were investigated and Structural Equation Model (SEM) was conducted. The results show that: (1) Physical exercise has no significant direct impact on mobile phone addiction. (2) Psychological resilience has a significant mediating effect between physical exercise and mobile phone addiction. But perceived stress does not. (3) Psychological resilience and perceived stress play a chain mediation role. Physical exercise can enhance psychological resilience firstly, thus relieving perceived stress and eventually mitigating mobile phone addiction.

Innovation, an internal drive promoting regional sustainable economic development, has received great attention around the world. The goal of this paper is to explore the relationship between sustainable input and regional innovation performance under the moderating effects of policy support and cultural value in various regions in China. This paper uses Schwartz’s cultural dimensions and data from 31 Chinese provinces (2006–2018) to empirically examine the relationships of interest. Based on the 403 total samples, the results reveal that innovation input has a significantly positive impact on regional innovation performance, and policy support positively moderates the relationship between regional innovation input and innovation performance. Further, with regard to cultural values, embeddedness (vs. autonomy) negatively moderates the relationship between sustainable input and innovation performance, while egalitarianism (vs. hierarchy) and mastery (vs. harmony) positively moderate this relationship. We discuss the implications of our findings for policy.