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AbstractThe rapid socio‐economic transformation is triggering tremendous land use transitions in China. It raises the need to explore the continuous process of land use change, which sheds light on rural revitalization. To depict the process of rural residential land use change in the transition period in China, we propose a four‐stage model of rural residential land use change and then apply the function fitting method to explore the spatial‐temporal change and type characteristics of rural residential land using a dataset of 339 cities from 2009 to 2016. We find that: (1) The change of rural residential land involves four stages—the Primary Stage (PS), the Rapid Development Stage (RDS), the Decelerated Development Stage (DDS), and the Transition Stage (TS). (2) From 2009 to 2016, 47.2% and 28.9% of the researched cities remained in RDS and DDS, respectively, and only 23.9% of the cities entered TS. (3) The high proportion of RDS cities and a significant increment of DDS cities reveal a high potential in the intensive use of rural land. These findings provide scientific guidance for land use policies, such as establishing and improving the unified land market between urban and rural areas, reinforcing the essential land management and policy implementation, and exploring the multi‐mode of comprehensive consolidation of rural residential land.

PurposeCrowdsourcing communities enable companies to post challenges that are completed by solvers (workers); their success depends on engagement, requiring both creativity and effort. This study explores solver engagement in online crowdsourcing communities, advancing the theory of trait engagement by investigating the mediating roles of: (a) task-related self-efficacy in linking conscientiousness, neuroticism and extraversion, with solver engagement, and (b) task complexity in influencing the mediation.Design/methodology/approach215 valid responses were obtained from solvers engaged in the popular Chinese crowdsourcing community, Epwk.com, using an online questionnaire. PLS was then used to analyze the data.FindingsResults show that self-efficacy mediates the relationships for conscientiousness, neuroticism and extraversion, with solver engagement. Moderated mediation analysis revealed that self-efficacy mediates the relationships for: (a) conscientiousness and extraversion, for only solvers with high task complexity; and (b) neuroticism, for only solvers with low task complexity.Originality/valueThe authors' findings underscore the importance of accounting for solvers' situational contexts when examining the relationships between personality, self-efficacy and solver engagement in online crowdsourcing communities.

Health care providers, policy makers, and investigators are dependent upon the quality and accuracy of published research findings to inform and guide future practice and research in their field. Systematic reviews, the synthesis of outcomes across studies are increasingly more common in the family literature; however, published review reports often lack information on strategies reviewers used to insure dependability of findings, and minimize methodological bias in the review. In this article, we summarize findings from systematic reviews of interventions and outcomes from family involvement in adult chronic disease care published between 2007 and 2016. In addition, we explore procedures reviewers used to insure the quality and methodologic rigor of the review. Our discussion provides guidance and direction for future studies of family involvement in chronic disease care.

1.Coal-fired power plants and pollutant emissions /Yongsheng Zhang --2.Coal-fired power plants emission standards /Tao Wang --3.Key technologies for ultra-low emissions from coal-fired power plants /Carlos E. Romero and Xingchao Wang --4.Cases of ultra-low emission coal-fired power plants /Tao Wang and Yongsheng Zhang --5.Fine particles characteristics of ultra-low emission coal-fired power plants /Yongsheng Zhang --6.Trace elements characteristics of ultra-low emission coal-fired power plants /Yongsheng Zhang --7.Cost effectiveness of ultra-low emission for coal-fired power plants /Yongsheng Zhang.