List of Articles Expectation-maximization Open Access Article Abstract Page Full-Text 1 - Autoregressive stochastic frontier model with nonlinear function of exogenous variable and dynamic technical inefficiency Bahareh Feizi Ahmad Poyrdarvish 10.30495/jnrm.2022.63544.2155 Open Access Article Abstract Page Full-Text 2 - Closed Loop Identification of Multi-Rate System by Expectation-Maximization somayeh Jokar Amin Ramezani Mehdi Siahi Open Access Article Abstract Page Full-Text 3 - A New Method for Segmentation of Multiple Sclerosis (MS) Lesions on Brain MR Images Simin Jafari Ali Reza Karimian Open Access Article Abstract Page Full-Text 4 - Portfolio optimization based on parametric and nonparametric period value at risk Mohamad ali tabibi sayyed mohammad reza davoodi abdolmajid abdolbaghy ataabady