Overcapacity in China's coal industry has serious negative impacts on the rational allocation of coal resources and stable operation of the national economy. Since 2016, the Chinese government has implemented a series of de-capacity policies to optimise coal production capacity. Timely policy effect assessment is of great significance to the government to guide high-quality development of the coal industry. This paper first reviews the dilemma encountered by China's coal industry prior to 2016, and then analyses the progress and effect of coal industry de-capacity. The main results are as follows: (1) The capacity reduction is mainly distributed in the central and southwestern regions. Most of the coal mines are state-owned, and there is a prominent worker resettlement problem.(2) The capacity optimisation policy has accelerated the implementation of the overall spatial planning of China's coal supply. China's coal production centre has shifted from the central and eastern regions to the west, and the industry's high-quality development pattern has taken shape.(3) China's coal industrial profitability has constantly been improving, industry concentration has increased significantly, and coal mining has become safer. (4) Due to the regional heterogeneity, the de-capacity policy effect has significant differences in coal production capacity and employee reduction in various regions. Finally, regarding the optimisation of China's coal production capacity, some policy implications are given.
The sustainable development of resource-based cities is vital to China's high-quality development. Based on the supportpressure framework, this study simplifies the city system into an economy-society subsystem (ESS) and a resourceenvironment subsystem (RES), and measures the economy social developmental level (ESDL) and resource environmental carrying capacity (RECC) of China's 116 resource-based cities using the improved entropy-TOPSIS model. Then, it applies the coupling coordination degree (CCD) and relative development models to explore their coupling coordination relationships and relative developmental types. The results are as follows. (1) The ESDL and RECC of China's resource-based cities have improved significantly, and there is a large divergence between cities in different regions, development stages, and dominant resource types. (2) The CCD between the ESDL and RECC of China's resource-based cities is still not ideal, and no city qualifies for the high coordination category. (3) Overall, the RECC lags behind the ESDL, and the cities with a lagging ESDL are concentrated in the western and northeastern regions. Based on these conclusions, three specific suggestions are put forth. This study may provide a scientific reference for the Chinese government to formulate a sustainable development plan for resource-based cities.
As teams become increasingly common for organizations to accomplish key objectives, improving team performance is a critical challenge for both practitioners and researchers. As researchers have converged on the notion that team performance is strongly influenced by subgroups, scholars have begun to explore how perception of subgroups influence team performance. Thus, in this study, we examined how perceived subgroups influenced the team transactive memory system (TMS), and hence team performance. We also proposed the moderating role of guanxi perception on the relationship between perceived subgroups and TMS. Utilizing two-wave multi-source data from 87 working teams in a Chinese central government-owned corporation, and based on multiple (moderator) hierarchical regression analyses, our results demonstrated that perceived subgroups were a negative predictor of TMS and team performance, and TMS mediated the negative relationship between perceived subgroups and team performance. That is, perceived subgroups inhibited team performance by blocking the development of a robust TMS. In addition, guanxi perception acted as a positive moderator, mitigating the negative relationship between perceived subgroups and TMS. Furthermore, the moderated mediation analysis of the integrative model revealed that the indirect effect of perceived subgroups on team performance via TMS was contingent on guanxi perception. Overall, our findings identified the pivotal role of perceived subgroups, TMS, and guanxi perception in working teams in the Chinese context.
Abstract:In the research and data analysis of the differences involved in group preferences, conventional statistical methods cannot reflect the integrity and preferences of human minds; in particular, it is difficult to exclude humans' irrational factors. This paper introduces a preference amount model based on relative entropy theory. A related expansion is made based on the characteristics of the questionnaire data, and we also construct the parameters to measure differences in the data distribution of different groups on the whole. In this paper, this parameter is called the center distance, and it effectively reflects the preferences of human minds. Using the survey data of securities market participants as an example, this paper analyzes differences in market participants' attitudes toward the effectiveness of securities regulation. Based on this method, differences between groups that were overlooked by analysis of variance are found, and certain aspects obscured by general data characteristics are also found.
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