We consider exact F tests for the hypothesis of null random factor effect in the presence of interaction under the two factor mixed models involved in the mixed models controversy. We show that under the constrained parameter (CP) model, even in unbalanced data situations, MSB/MSE (in the usual ANOV A notation) follows an exact F distribution when the null hypothesis holds. We also obtain an ex...

this study concerns with a trust-region-based method for solving unconstrained optimization problems. the approach takes the advantages of the compact limited memory bfgs updating formula together with an appropriate adaptive radius strategy. in our approach, the adaptive technique leads us to decrease the number of subproblems solving, while utilizing the structure of limited memory quasi-newt...

The dispoportionate dropout rate of female college students from math, science, and engineering (MSE) fields has recently received much attention (Brainard, Laurich-McIntyre, 6' Moblqr, 1995; Carlin, 1997). The reasons far women 's higher attrition rate from MSE fields remain unclear. Eighty lstyear university students with apeexisting interest in MSE complehd a computer task-the Implicit Assoc...

the principle of dimensionality reduction with pca is the representation of the dataset ‘x’in terms of eigenvectors ei ∈ rn  of its covariance matrix. the eigenvectors oriented in the direction with the maximum variance of x in rn carry the most      relevant information of x. these eigenvectors are called principal components [8]. assume that n images in a set are originally represented in mat...