Examining the interrelationships among critical success factors (CSFs) for public private partnership (PPP) projects is of importance for improving PPP project performance and maintaining the sustainability of PPP project implementation. Previous studies mostly focused on the identification of the CSFs for PPP projects; limited studies investigated the interrelationships among CSFs. Hence, the research objectives are (a) to determine the interrelationships among CSFs of PPP projects taking into account the public and (b) to identify influence paths contributing to take advantage of CSFs in the process of PPP implementation. A literature review and expert interviews were adopted to construct the CSFs framework; nine hypotheses were constructed and tested by the structural equation modelling (SEM) based on the data collected from a questionnaire survey. This research reveals that the relationship between public and private partners is the leader-follower relationship, not the partnership relationship, in PPP projects, indicating that the responsibilities, power or resources existing among partners are very unequal. It also highlights that public involvement has a negative effect on the process of service provisions, and costs and risks exist in the process of public involvement in PPP projects. The determined interrelationships among CSFs will contribute to the sustainability and success of a PPP project.

Private participation is the key element in forming a public-private partnership (PPP). Numerous studies have identified the factors of private participation in infrastructure projects, but the results have rarely focused on the willingness of the private sector to participate in infrastructure PPP projects. This research examines the factors of the private participation in a PPP with the consideration of the willingness to participate as a function of internal (e.g., the firm’s nature) and external factors (e.g., institutions, the government’s behavior, and project characteristics). Using the logistic regression model and the data from a questionnaire survey, this research found that nine variables have a significant coefficient, e.g., profitability, political connections, government intervention, government support, project complexity, and project experience; in particular, those companies with more project experience, more political connections, and higher profitability are more likely to be willing to participate in PPP projects. In contrast to previous studies, this research finds no support for the effect of the institutional environment and public support on a firm’s willingness to participate in PPPs. These findings can serve as a valuable reference in shaping the private sector’s motivation to participate in PPPs. The factors of private participation in PPP projects are explained and discussed in the context of the Chinese PPP experience and practice.

Inequality is a large challenge to sustainable development, and achieving equity has already become one of the top goals in sustainable development of the UN’s post-2015 development agenda. Located in the western inland region of China, Chongqing is characterized by “big city, big countryside, big mountain area, big reservoir area” and its regional inequality is more serious. This paper is to explore Chongqing’s regional inequality from sectoral structure, spatial policy and economic development by constructing, decomposing, and calculating the inter-county per capita GDP Gini Coefficient. Through this study, it is mainly found that: (1) Chongqing has experienced a dynamic evolution from unbalanced development to balanced development, and its regional inequality has been decreasing steadily in recent years; (2) the Tertiary Sector gradually contributes most to regional inequality; (3) inequality between regions is the main section of regional inequality; (4) the spatial policy as per regional division of Five Function Areas is more rational than the division of the main urban and suburb areas; and (5) economic development is the best way to reduce the regional inequality. Based on the results of empirical study and the reality of Chongqing, targeted and systematic policy suggestions are proposed to reduce regional inequality and promote sustainable development.

Health equity is significant for social sustainability and the Chinese government is trying to achieve the goals of “universal access to basic health care services”. As the comprehensive carrier of health care services, hospitals are almost the most important health care resources and their regional maldistribution needs to give a special concern for health justice and social sustainability. This study aims to explore regional maldistribution of various hospitals through constructing, decomposing and calculating per capita hospitals Gini Coefficient based on the unique structural system of China’s hospitals from 2003–2014. Results show that: (1) the level of regional maldistribution of hospitals in China is not too serious in terms of quantity and there is a slight decline in recent years; (2) regional maldistribution of hospitals is mainly from General Hospitals and in inland areas; and (3) the slight decrease of regional maldistribution is mainly caused by Concentration Effect and increased per capita hospitals. Based on empirical results and the reality of China, some targeted policy suggestions are proposed to reduce regional maldistribution of hospitals and promote health equity for social sustainable development.

In periods of rapid urbanization, investment in urban infrastructure should not only meet the increasing demands of all urban people, but also be equally allocated between cities to achieve social equity and sustainable development. This paper aimed to conduct quantitative research on the unbalance of urban infrastructure investment between cities in China. The measurement models for inequality, bi-polarization and the mobility of urban infrastructure investment were constructed by means of the Gini coefficient, bi-polarization index and mobility function from the urban system, and an empirical study was conducted based on panel data from 2006 to 2014. The results show that: (1) The overall inequality of urban infrastructure investment in China’s urban system was relatively prominent and showed a “U-shaped” change generally. (2) The inequality between different administrative levels or regional cities only partially accounted for the overall inequality of China’s urban system. (3) Inequality and bi-polarization showed inconsistent performance. (4) Mobility played a positive role in reducing the inequality and bi-polarization. Based on the empirical findings and the reality of China’s urban infrastructure investment and financing, targeted policy suggestions were proposed in terms of adjusting inequality and bi-polarization, innovating investment and financing mechanisms, and optimizing urban infrastructure investment strategies.

Task interdependence is essential in sustainable cooperation, conflict prevention, and performance improvement of public–private partnership (PPP) project teams and promotes the sustainable development of PPP projects. Based on the theoretical logic of Input–Process–Output (IPO), integrating Team Process Theory and Leader–Member Exchange (LMX) Theory, we constructed a mediated model of task interdependence, team reflection, team performance, and leader–member exchange differentiation in PPP projects. Based on this, we conducted questionnaire research and research analysis on 168 PPP project teams. The results of the study indicate that task interdependence in PPP projects has a significant positive effect on team performance, and there is a significant mediating role of team reflection in the relationship between task interdependence and team performance. The leader–member exchange differentiation in teams not only moderates the relationship between task interdependence and team reflection and team reflection and team performance but also further moderates the indirect effect of task interdependence in PPP projects on team performance through team reflection. The findings extend the impact effects of task interdependence in engineering projects, as well as the moderating mechanisms of leader–member exchange differentiation in Chinese organizational scenarios, providing lessons for PPP project team performance management and sustainable development of PPP projects.