Sharif Digital Repository

The process of implementing a damage detection strategy for aerospace, civil and mechanical engineering infrastructure is referred to as Structural Health Monitoring (SHM). Many portions of our technical infrastructure are approaching or exceeding their initial design life. As a result of economic issues, these civil, mechanical and aerospace structures are being used in spite of aging and the associated damage accumulation. Therefore, the ability to monitor the health of these structures is becoming increasingly important. In many cases, damage causes a structure that initially behaves in a predominantly linear manner to exhibit nonlinear response when subject to its operating environment.... 

Despite the growth in Iran’s petrochemical production, most of the plants are concentrated upstream; although the government has made various interventions to promote industrial development. The literature review shows that government intervention is necessary to solve market failures, especially in developing countries; but it should be tailored to the specific context and especially the distribution of the power. Most experts believe that the cause of the above phenomenon is feedstock rent and the reason for its continuation is the political influence of petrochemical companies. While not rejecting this view, we try to provide policy recommendations by looking more closely at the issue and...