based on an analysis of institution-culture 中国农村养老保障模式创新研究:基于制度文化的分析:based on an analysis of institution-culture based on the perspective of institutional investors based on the analysis of field theory based on the analysis of a-share listed companies based on the analysis of the service outsourcing industry based on analysis of production, circulation and trade based on the analysis of internal labor market theory based on the perspective of institutional compatibility based on the analysis of efficacy and influencing factors