21 research outputs found
Demonstration of a sterilizable solid rocket motor system, addendum
Technical emphasis was placed on characterization of a scaled-up batch of the improved propellant formulation and determination of the effects of dry heat sterilization on propellant integrity and structural response. The grain stress analysis was directed toward tailoring a fully-bonded grain to the calculated propellant allowable stresses and investigating various bond release concepts to relieve stresses incurred in thermal shrinkage following sterilization
Administração e teorias das organizações contemporâneas: rumo a um humanismo radical crítico?
Preparation of Sodium Alpha-Sodioalkanoates by the Reaction of Sodium Alkanoates with Sodium Metal
Development of a Three-Dimensional Heat Transfer Model for Continuous Annealing of Steel Strip
Communication that Develops Teams: Healthy Ministry Team Dynamics as a Function of Consistent Leader Communication of Emotional Intelligence
Convergence Properties of the Likelihood of Computed Dynamic Models
This paper studies the econometrics of computed dynamic models. Since these models generally lack a closed-form solution, their policy functions are approximated by numerical methods. Hence, the researcher can only evaluate an approximated likelihood associated with the approximated policy function rather than the exact likelihood implied by the exact policy function. What are the consequences for inference of the use of approximated likelihoods? First, we find conditions under which, as the approximated policy function converges to the exact policy, the approximated likelihood also converges to the exact likelihood. Second, we show that second order approximation errors in the policy function, which almost always are ignored by researchers, have first order effects on the likelihood function. Third, we discuss convergence of Bayesian and classical estimates. Finally, we propose to use a likelihood ratio test as a diagnostic device for problems derived from the use of approximated likelihoods. Copyright The Econometric Society 2006.