就复杂动态的关键工程项目群组织间关系结构及演化规律的系统认知，是控制项目群组织行为，优化项目群组织功效，实现项目群战略目标的重要基础。本项目拟运用组织网络理论，引入复杂网络中尺度（模块和模体）方法，提出并研究关键工程项目群组织网络中尺度合作构型、角色模式及演化机理问题。研究针对典型关键工程项目群组织及其合作关系构建组织网络，运用复杂网络中尺度方法辨识组织网络的模块和模体合作构型，分析其表达的合作集群和合作团队功能内涵及行为特性；构建及运用基于中尺度构型的节点角色划分方法，辨析组织网络中个体组织所具有的局域结构位置及实际角色模式；基于事件框架形式化表达关键工程项目群组织动态网络中尺度构型生成、融合、分裂、消失和保持的演化事件，应用神经网络分析预测中尺度演化的关键特征参数及演进趋势。研究有助于创新项目群组织管理的复杂性思维范式，并为国家关键工程项目群战略制定、高效组织和持续运营提供实践指导。

As to the complex and dynamic organization system of critical engineering project program(CEPP), the understanding of its collaboration pattern and evolution mechanism is of vital importance to the behavior control and function optimization of the organization system, as well as to the achievement of project program strategy. In this project, based on inter-organization network theory and complex network mesoscale methods, i.e., module and motif, the mesoscale collaboration pattern, role mode and evolution mechanism of the inter-organization network in CEPP will be studied. More specifically, the inter contractors’collaboration network of the CEPP will be constructed based on inter-organization network theory. Then the mesoscale collaboration configurations, together with their expression of collaboration clusters and collaboration teams function connotation and behavior characteristics are analyzed. After that, the mesoscales structure position and actual role model of individual contractor will be investigated, using module and motif based role classification method, respectively. Furthermore, the evolution mechanism in characterizing generation, fusion, fission, disappear and maintain of the mesoscale patterns of the collaboration network are studied by using event based framework and neural network method. The research will help to expand the theory of project program governance, as well as to provide applications for strategy making, efficient organizing, and continuing operations for CEPP.