in the developed countries, many organizations are regarded as knowledge-based businesses in which knowledge management is necessary. today, this science is changing into integral activity of business in organizations. one of the concerns of knowledge management is its implementation.many companies and organizations which try to start knowledge management don’t ensure that the best approach is ...

in this paper, a new design of optical channel drop filter based on two- dimensional photonic crystal ring resonators with triangular lattice is proposed. the rods of this structure is silicon with the refractive index nsi=3.46 and the surrounding environment is air with the refractive index of nair=1.the widest photonic band gap obtains for the filling ratio of r/a = 0.2. the filter’s transmis...

designing a power splitter with five ports has been shown in this article. in order to prevent the direct coupling between waveguides, a t-shaped structure with an appropriate distance has been used. the coupling between the parallel photonic crystal waveguides is based on multimode interference, while selecting the output efficiency is performed by setting the refractive coefficients and radiu...

Redesigning Bazaar Physical Structure According to its Dealing Culture Structure Case Study: Arab Bazaar in Ahvaz City The Bazaar physical structure is formed from the arrangement syntax of division units, Interfaces, joints and boundaries to each other and the Arabic Bazaar also follows this example. This structure is the result of arrangement syntax of division units with linear pattern a...

in this article, non radial method of dynamic dea with the parallel network structure is presented and is used for calculation of relative efficiency measures when inputs and outputs do not change equally. in this model, dmu divisions under evaluation have been put together in parallel. but its dynamic structure is assumed in series. since in real applications there are undesirable inputs and o...

an azobenzene bridge was introduced into the lower (or smaller) rim of p-tert-butylcalix[8]arene to form 1,5-singly bridged calix[8]arene derivatives, respectively. bridged calix[8]arene of conformationally rigid wereisolated. the stability of the two structures of bridged calix[8]arenes have been compared.the study of organicstructure to form nanoporous structures is a well known in chemistry ...

The <span>next-generation communication system incorporates information technology (IT) and operations (OT) for generating, delivering, collecting, obtaining power. We plan to include a brief outline of internet thing (IoT) its context, along with security concerns that arise IoT data on the network some methods detecting avoiding cyber threats. With rise 5G networks, we introduce smart n...