Purpose: The aim of this study was to examine the impact of Diamond-Levitt and knowledge management, organizational effectiveness, in PNU Kermanshah province. The study was a descriptive - survey. The population of the study, 470 employees of Payame Noor University in Kermanshah province, are included. Using Cochran formula, 212 people were selected. Materials and method: Data collection tools, questionnaires Diamond Levitt, and knowledge management researcher, and organizational effectiveness Parsons (1969). Questionnaire, approved three professors, and reliability with Cronbach's alpha for diamonds Levitt, knowledge management and organizational effectiveness, respectively (86%, 82% and 77%) are. Findings: By SPSS and LISREL, research data were analyzed. The results of the analysis and stepwise linear regression, 95% indicated that the diamond Levitt knowledge management variables (0.226), and organizational effectiveness (0.227) and knowledge management and organizational effectiveness (0.178), have a significant positive effect. The results of the study showed that, in effect Diamond Levitt knowledge management, organizational effectiveness as a mediator (0.263) is. Discussion: Also in this study to test the conceptual model, structural equation modeling was used, the results of direct effects diamond variable Levitt, knowledge management, (0.87) and organizational effectiveness (0.66), and the direct effect of knowledge management on organizational effectiveness (0.52), and the indirect effect and the effect of variable diamond-Levitt, organizational effectiveness, respectively (0.69) and (0.11) is indicated and the t-statistic is also witness to the significance of the results is. Finally, the mediating role of knowledge management, the relationship between the Diamond-Levitt, and was supported organizational effectiveness, so that the diamond Levitt indirect impact on organizational effectiveness, with the role of knowledge management (indirect effect = 0.69), Levitt diamonds larger than the direct impact on organizational effectiveness (direct effect = 0.66) is. The above results indicate fit (RMSEA = 0.072 and GFI=0.93) was the optimal model.
