Conceptual framework for enabling PPP project sustainability: a system thinking and modelling
基于系统思维，整合生命周期和利益相关者视角，构建了PPP项目可持续性的概念框架，并通过系统动力学模型验证其有效性，为可持续管理和决策提供参考。
Enhancing the sustainability of public-private partnerships (PPPs) is pivotal for enabling the sustainable development of infrastructure worldwide. However, there has been inadequate research systematically identifying the underlying dynamics of the project sustainability of PPPs. Drawing upon the system thinking, we develop a conceptual framework by integrating the life-cycle and stakeholder perspectives to fill the above-mentioned void. Based on stakeholders’ decision-making and action process, the driving factors have been identified to ensure PPP sustainability and categorized into: (1) public sector’s capability; (2) public sector’s input; (3) private entity’s capability; (4) private entity’ input; and (5) partnership. Then, a system dynamics model is constructed to examine the validity of the conceptual framework through the scenario-based analysis. The contribution of this research is threefold: (1) an integrated framework for clarifying the driving mechanisms of PPP sustainability; (2) an extended systematic perspective sustaining the projects; and (3) implications for practising sustainable management and relevant decision-making.