the future economy would be a network-centric economy. networks yield more meaning to the concept of perfect competition market. the successful presence in the network-centric economy requires identification and application of new technologies. in today’s competitive business environment, everything is continuously changing and the only thing remains intact is change. environment pressures forc...

As we know breast cancer is the second death reason in Iran. One step of treatment process is radiotherapy, which needs careful consideration of contouring and therapeutic techniques Lung, thyroid, spinal cord, trachea and humerus are sensitive organs in breast cancer radiation therapy.  The most clinical studies recommended two ways for delivering 95 percent of dose to supraclavicular and ...

Average values of< 1- T >where T is the thrust are presented for e: e: AMY data and are compared with their values in hadronic interactions. As far as possible, similar analysis techniques have been employed in the two different interactions. Similar variation with E is observed for this average in both data. The values of < PT> and < PL > relative to the thrust axis in e e are simila...

investigations in recent decades have shown an unexpected increase in aerosol concentrations in metropolitan and industrialized regions. it was sometimes followed by heat islands and probably decreases in precipitation due to an inadvertent cloud overseeding process. particle pollutants act like small cloud condensation nuclei in which they form large collections of small droplets in cloud. col...

For distinct vertices u and v in a graph G, the connectivity between v, denoted $$\kappa _G(u,v)$$ , is maximum number of internally disjoint u–v paths G. The average $${\overline{\kappa }}(G),$$ taken over all unordered pairs u, Analogously, for directed D, from to _D(u,v)$$ D. }}(D)$$ ordered An orientation G obtained by assigning direction every edge let }}_{\max }(G)$$ denote among orientat...