Many security protocols have the aim of authenticating one agent acting as initiator to another agent acting as responder and vice versa. Sometimes, the authentication fails because of executing several parallel sessions of a protocol, and because an agent may play both the initiator and responder role in parallel sessions. We take advantage of the notion of transition systems to specify authen...

in this paper, we considered composition operators on weighted hilbert spaces of analytic functions and  observed that a formula for the  essential norm, gives a hilbert-schmidt characterization and characterizes the membership in schatten-class for these operators. also, closed range composition operators  are investigated.

A hydroethanolic extract (HE-ext) of Bacopa monnieri (BM) was studied for antinociceptive effect in the animal models of acetic-acid-induced writhing test and antilocomotive effect in mice. Standard centrally-acting analgesic, morphine (MP), and peripherally-acting one, diclofenac (Diclo), were also tested along with the extract for comparison. The extract exhibited significant antinociceptiv...

Improving clinical and public health laboratories should be one of the main goals of strengthening health systems, rather than a desirable afterthought. In this respect, in July 2009, several African countries, donors, the World Health Organization (WHO), and implementing partners met in Kigali, Rwanda, to launch a program for strengthening laboratory management, with the aim to accelerate nati...

in this paper, the effect of electric field on two-dimensional low reynolds air flow around an airfoil and variation of the forces acting on the airfoil is numerically investigated. the electric current and poisson’s equations are solved and the outcome is considered as a source term in the momentum equations. the energy equation is not considered due to its weak effect on the phenomena. the fi...

the varicella-zoster virus (vzv) genome contains both cis-acting and trans-acting elements, which are important in viral dna replication. the cis-acting elements consist of two copies of oris, and the trans-acting elements are those genes whose products are required for virus dna replication. it has been shown that each of the seven genes required for ori-dependent dna synthesis of herpes simpl...