Dynamic assessment modelling for project portfolio benefits
针对项目组合效益实现与改进缺乏指导的问题，开发了一个系统评估模型，通过识别四个子系统并构建系统动力学模型来动态分析和优化效益，并用数值例子验证了模型的有效性。
Project portfolio benefits (PPBs) are typically regarded as a key feature for successful project portfolios in practice. However, there is little prescriptive knowledge that offers guidance on how to tackle the realisation and improvement of PPBs. To narrow this research gap, we develop a systematic assessment model to analyse and optimize PPBs. Innovatively considering the recessive benefits resulting from synergies among different project components, four subsystems of PPBs are identified. Subsequently, by synthesizing the interrelations within and between subsystems, a system dynamics model is developed to assess PPBs dynamically. Then, a numerical example is adopted to validate the applicability and effectiveness of the proposed model. It can be concluded that the model is exploitable in academia and practice. For academia, this study expands benefit management tools and provides a theoretical basis for project portfolio benefit optimization. For practitioners, the straightforward model and procedure contribute to enhancing the management of PPBs.