In this paper, a log type calibration estimator for estimating the population mean in stratified random sampling has been proposed utilizing available auxiliary information. This also extended case of double when information is not known. The simulation study carried out using R software on real as well artificial datasets. empirical bootstrap estimates percentage relative root squared error (%...

This paper considers dynamic optimization problems for a class of control average meanfield stochastic large-population systems. For each agent, the state system is governed by linear mean-field differential equation with individual noise and common noise, weight coefficients in corresponding cost functional can be indefinite. The decentralized optimal strategies are characterized Hamiltonian s...