Background: Chronic obstructive pulmonary disease (COPD), the most common chronic respiratory disease worldwide, not only leads to the decline of pulmonary function and quality of life consecutively, but also has become a major economic burden on individuals, families, and society in China. The purpose of this meta-analysis was to explore the risk factors for developing COPD in the Chinese population that resides in China and to provide a theoretical basis for the early prevention of COPD. Methods: A total of 2457 cross-sectional, case-control, and cohort studies published related to risk factors for COPD in China were searched. Based on the inclusion and exclusion criteria, 20 articles were selected. Stata 11.0 was used for meta-analysis. After merging the data, the pooled effect and 95% confidence intervals (CIs) were calculated to assess the association between risk factors and COPD. Heterogeneity between studies was assessed using I² and Cochran’s Q tests. Begg’s test was used to assess publication bias. Results: Exposure to particulate matter less than 2.5 μm in diameter (PM2.5) (pooled effect = 1.73; 95%CI: 1.16~2.58; P <0.01), smoking history (pooled effect = 2.58; 95%CI: 2.00~3.32; P <0.01), passive smoking history (pooled effect = 1.39; 95%CI: 1.03~1.87; P = 0.03), male sex(pooled effect = 1.70; 95%CI: 1.31~2.22; P <0.01), body mass index (BMI) <18.5 kg/m² (pooled effect = 1.73; 95%CI: 1.32~2.25; P <0.01), exposure to biomass burning emissions (pooled effect = 1.65; 95%CI: 1.32~2.06; P <0.01), childhood respiratory infections (pooled effect = 3.44; 95%CI: 1.33~8.90; P = 0.01), residence (pooled effect = 1.24; 95%CI: 1.09~1.42; P <0.01), and a family history of respiratory diseases (pooled effect = 2.04; 95%CI: 1.53~2.71; P <0.01) were risk factors for COPD in the Chinese population. Conclusion: Early prevention of COPD could be accomplished by quitting smoking, reducing exposure to air pollutants and biomass burning emissions, maintaining body mass index between 18.5 kg/m² and 28 kg/m², protecting children from respiratory infections, adopting active treatments to children with respiratory diseases, and conducting regular screening for those with family history of respiratory diseases.

Due to the publicly owned resource attributes of the ecological environment, the treatment and governance of the environment should be guided by governments, which are mainly represented as environmental regulations. However, whether environmental regulations affect green productivity and what effects heterogeneous environmental regulations have on green productivity are still implicit. In addition, the moderating roles of technical change and efficiency change are ignored. To examine these issues, this study investigated the impacts of heterogeneous environmental regulations on green productivity and the moderating roles of technical change and efficiency change using the dynamic spatial Durbin model based on the panel data of 30 Chinese provinces from 2000 to 2018. The results show the following: compared with efficiency change, technical change has a stronger promotion effect on green productivity in China; considering the spatial spillover effects and the temporal lag effects of green productivity simultaneously, the negative path-dependent feature is not supported any longer, while the spatial spillover effect is still the power source for promoting green productivity in China; the moderating roles of technical change and efficiency change for the nexus between heterogeneous environmental regulations and green productivity in China are partly and conditionally supported at national and regional levels; the direct and indirect effects of heterogeneous environmental regulations on green productivity at the regional level have a feature of spatial heterogeneity. This study provides both theoretical and practical implications, in particular for China, to promote green productivity from the dual perspectives of space and time.

This paper focuses on the dynamic co-evolution of technology management capability and technological capability in the system of product innovation. It is motivated by the increasing attention that product innovation has received recently, as it is considered one of the most important factors that can bring about competitive advantages for firms to compete with their rivals in the current competitive business environment. Framing the system of product innovation as a complex adaptive system and focusing on the roles of technology management capability and technological capability in the system, the most suitable synergistic mechanisms between technology management capability and technological capability that can make the system reach the highest fitness under their diverse coupling relationships are identified by means of NK fitness landscape model. The simulation results show that there are matches between the coupling relationships among the elements of technology management capability and technological capability and their synergistic mechanisms in the system of product innovation. This paper provides a better understanding of the relationships between technology management capability and technological capability and managerial implications for firms to innovate products successfully and promptly and thus improve their competitive advantages.

Special needs are of paramount importance in international equitable education. The focus on students with special needs has become the basis of current special education and education reform. The world is currently undergoing a pivotal phase of digital transformation, with educational digitalization gradually developing. However, only a few studies have focused on the effect of educational digitalization on the creativity of students with special needs, and most of them have ignored its internal mechanism. This study therefore aims to explore the manner in which and the circumstances under which educational digitalization affects the creativity of students with special needs. Building upon information theory, this study proposes a mediated moderating framework to examine the effects of educational digitalization on the creativity of students with special needs, considering the mediating role of studying crafting and the moderating effect of creative self-efficacy. A survey methodology was employed to collect empirical data on the interrelationships among educational digitalization, study crafting, creative self-efficacy, and the creativity of students with special needs. The results demonstrated a significant positive relationship between educational digitalization and the creativity of students with special needs through study crafting. Furthermore, creative self-efficacy was found to play a moderating role in this process. The findings provide educators and policymakers with practical guidance on how to optimize the implementation of digital technologies in educational environments in order to promote education equity.