The study exploits rich data from the Fragile Families and Child Wellbeing Study (FFCWS) to distinguish between contemporaneous and dynamic family structure effects on child cognitive performance. Using race-specific sex-ratios to instrument for endogenous family structure, the model illustrates that the child does benefit from living with two-parents. However, this method does not take into ac...

Analysis of transient stability of strongly nonlinear post-fault dynamics is one of the most computationally challenging parts of Dynamic Security Assessment. This paper proposes a novel approach for assessment of transient stability of the system. The approach generalizes the idea of energy methods, and extends the concept of energy function to a more general Lyapunov Functions Family (LFF) co...