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Lately, organizations have become increasingly aware of the value of managing their organizational learning and knowledge. Thus researchers have investigated those processes extensively. Still something is missing in the current discussions of organizational knowledge: organizations do not just learn; they also forget. Knowledge management is creating processes not only for learning and retaining what is important but also for avoiding or unlearning what is not important. Forgetting, like learning, is not simple: it may be detrimental or beneficial, accidental or purposeful. By the way, in all cases, it can significantly affect, in both negative and positive ways, the competitiveness of an organization. In the present study, in addition to the investigation of concept and forms of organizational forgetting, we studied the relationship between purposeful organizational forgetting and charismatic leadership and determined of the amount of organizational forgetting, due to strategic importance of purposeful organizational forgetting. The data necessary for this study were through questionnaires that were given to 165 top and middle managers and supervisors in the supply chain of Iran automobile industry. Correlation analysis of data by chi-square test showed that there is a significant relationship between every dimensions of purposeful forgetting (new and established knowledge) and charismatic leadership.

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The purpose of this research is to identify factors and components that affect a trust-based cooperation in the automobile supply chain and their impact on the performance of the supply chain companies. This paper includes 2 parts. In the first part, by studying the research history and literature and interviewing academic and industrial scholars and experts, four hidden variables of trust-based cooperation in automobile industry were identified and the basic research model was designed. In the second part, using Structural Equation verification and path analysis, the impact of these variables on trust-based cooperation and the impact of trust-based cooperation on the performance of the supply chain companies were studied. Research population consisted of Iran-Khodro and Saipa’s supply chain companies including part makers, major car manufacturers and distributors. Data gathering method was questionnaires that were given to 400 companies –one questionnaire per company- 196 of which were returned and analyzed. In this phase, first, by confirmatory factor analysis and path analysis, validity and stability of the indexes that were derived from the model in the first phase, were tested, all of which were confirmed. Four hypotheses were developed based on the conceptual model of the research and tested by path analysis. According to the findings, 3 of the hypotheses were confirmed and one was rejected. Based on the results of the research, some suggestions were presented for improving the performance of companies in the automobile supply chain and for future researches.
 
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