نتایج جستجو برای: data based theory
تعداد نتایج: 5073619 فیلتر نتایج به سال:
We propose a nonlinear concealing–restoring system (CRS) set on the data link layer of open-systems-interconnection (OSI) reference model to secure physical layer. CRS conceals those by disturbing them with some random noises, and restores from concealed ones original noise elimination based proper stochastic filtering theory.
Introduction: Unsafe sexual behaviors as important risky behaviors can expose individuals and society to dangerous infectious disease such as AIDS and viral hepatitis. Considering the high prevalence of unsafe sexual behaviors, this study aimed to determine the effect of educational programs to encourage safe sexual behaviors among substance abusers referred to substance abuse treatment centers...
learning of abnormalities is a considerable challenge in data mining and knowledge discovery. exceptional phenomena detect among huge records of the database which contains a large number of normal records and very few abnormal ones. this is important to promote confidence to a limited number of records for effective learning of abnormality. in this study, a new approach based on the abnormalit...
compound (n,n-bis (salicylidene) 1,2-diaminophenylene) was prepared by condensation of ethanolsolution of 2-hydroxybanzaldehyde and 1,2-diaminophenylene. the compound was characterized by1h nmr, infrared spectroscopy (ft-ir) data and analytical data. the geometrical parameters andenergies have been obtained from density functional theory (dft) b3lyp method and hartree-fock (hf) method with 3-21...
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