Two Strategies or Governance Mechanisms, Widely Employed to Increase the Value of Knowledge assets in organizational repositories are: 1. Expert Governance which employs experts of supervisors as referees to control or edit users' contributions and 2. community governance, which relies on a community of users to review, rate, or edit existing contributions (such as in a wiki). The goal of this dissertation is to introduce the concept of repository mechanisms on knowledge contribution to and knowledge use from electronic repositories. These essays are discussed to achieve the goals of the dissertation.