Cognitive radio networks(CRNs)is new paradigm that provides the capability to share or use the spectrum is an opportunistic manner. It ability to sense the unused spectrum at a specific time and location (spectrum hole).Cognitive Radio (CR) technology is a promising solution to enhance the spectrum utilization by enabling unlicensed users to exploit the licensed spectrum in an opportunistic man...

objectives: this study compared the effects of individual and group training on general health and stress of parents of children with autism spectrum disorders. methods: a sample of 75 parents of children referring to autistic children foundation (including 50 parents in two experimental groups and 25 parents in control group) was taken into account. sample parents were selected through accessi...

the degree kirchhoff index of a connected graph $g$ is defined as‎ ‎the sum of the terms $d_i,d_j,r_{ij}$ over all pairs of vertices‎, ‎where $d_i$ is the‎ ‎degree of the $i$-th vertex‎, ‎and $r_{ij}$ the resistance distance between the $i$-th and‎ ‎$j$-th vertex of $g$‎. ‎bounds for the degree kirchhoff index of the line and para-line‎ ‎graphs are determined‎. ‎the special case of regular grap...

The one dimension computational model of a sequential injection engine, which runs on compressed natural gas (CNG) with spark ignition, is developed for this study, to simulate the performance of gas flow pressure profile, under various speed conditions. The computational model is used to simulate and study of the steady state and transient processes of the intake manifold. The sequential injec...

• In this paper we attempt to unify and extend the various approaches to synthesizing fully S testable sequential circuits that can be modeled as finite state machines (FSMs). We first identify classes of redundancies and isolate equivalent-state redundancies as those most difficult to eliminate. We then show that the essential problem behind equivalent-state redundancies is the creation of val...

The structure, IR absorption, luminescence, and luminescence excitation spectra of La 0.99-x Y x Eu 0.01 BO 3 orthoborates synthesized at 970 o C were studied 0≤ x≤0.99. An increase in leads to a sequential change the structural state these compounds. At x≤0.1, samples are single-phase have aragonite structure. Within range 0.1<x≤0.8, two-phase: vaterite phase is observed along with 0.8&...

background: selection of the best approach for the treatment of helicobacter pylori (h. pylori) infection that encompasses higher eradication and lower failure rates leads to a decline in its related complications and disorders. to understand the relative efficacy of new sequential therapy compared with standard triple therapy as two common regimens, we have performed a randomized, controlled t...