We des ribe eÆ ient onstru tions for various ryptographi primitives in private-key as well as publi -key ryptography. Our major results are two new onstru tions of pseudorandom fun tions. We prove the pseudo-randomness of one onstru tion under the assumption that fa toring (Blum integers) is hard while the other onstru tion is pseudo-random if the de isional version of the DiÆe-Hellman assumpti...

factor analysis is one of the most advanced multivariate statistical techniques applying to attain a variety of scientific and research goals such as model-building, hypothesis-building lest validation, identifying subtests and development conditions in order to perform the other advanced methods as multiple regression and structural equation models. while there are difficulties and complexitie...