Sharif Digital Repository

Weexaminetherelationshipbetweenfamilysizeandchildreneducationaloutcomes. Using a 2 percent sample of Iran Populaion Census 2011, we construct a sample of school age children. Estimation using unrestricted OLS with controls shows an inverse-U relationship between family size and educational outcomes; children educational performance improves significantly as their number increases form 1 to 2, but for families with 3 or more children, increasing the number of childern deteriorates educational outcomes  

Nowadays seismic designs of building structures are based on a life-safety criterion that made the structures do not collapse to compromise safety of human life in the structure, but they can be designed to experience some damage. However, this design method has permitted large economic losses due to the damage to the structural and non-structural components at rather moderate levels of seismic intensities. This led to a new concept about design approach called performance-based design that satisfies the life-safety objective at the same time, reduces the economic loss to an acceptable level. In this study, the use of energy dissipating damping devices to improve the performance of a...