ABSTRACT We propose a new asset pricing framework in which all securities' signals predict each individual return. While the literature focuses on own‐signal predictability, assuming equal strength across securities, our includes cross‐predictability—leading to three main results. First, we derive optimal strategy closed form. It consists of eigenvectors “prediction matrix,” call “principal por...

Joints often have important effects on seepage and elastic properties of jointed rock mass and therefore on the rock slope stability. In the present paper, a model for discrete jointed network is established using contact-freemeasurement technique and geometrical statistic method. A coupled mathematical model for characterizing anisotropic permeability tensor and stress tensor was presented and...

estrogen replacement therapy (ert) in postmenopausal women may decrease the risk of coronary artery diseases (cad). we hypothesized that nitric oxide (no) releasing due to ert may be the essential factor by which endothelial permeability decreases. four groups of ovariectomized rabbits were under investigation for five weeks. groups 1 & 4 received high cholesterol diet and other two groups (2 &...