There is abundant literature regarding virtual reality as a technology of interest in the present age. However, there are few comprehensive studies on strategies that can improve the level of urban design research using this technique. To investigate the issue, this paper first reviews the concept of virtual reality. Next, the opinions of experts in the field of virtual reality technology are s...

single-phase squirrel cage and three-phase induction electromotors are the most popular electromotors used in industry from long ago. when an induction motor starts with direct connection method, it takes a lot of current from the power supply (several times the nominal current); so, several methods have been devised to start such electromotors. these methods either reduce the voltage of the st...

Cogging torque is the major limitation of axial flux permanent magnet motors. The reduction of cogging torque during the design process is highly desirable to enhance the overall performance of axial flux permanent magnet motors. This paper presents a double-layer magnet design technique for cogging torque reduction of axial flux permanent magnet motor. Initially, 250 W, 150 rpm axial flux brus...

using virtual social media and networks widely and relations based on electronic communication have transformed political and social activities in recent decades. the current essay aims to review the effects of virtual social media on the field of politics in iran. therefore, this essay propounds the questions: “how has the virtual social media caused transformation on the field of politics in ...

using virtual social media and networks widely and relations based on electronic communication have transformed political and social activities in recent decades. through this, in this essay we are going to review the effects of virtual social media on the field of politics in iran. therefore, this essay propounds the question that how has the virtual social media caused transformation on the f...

The present work studied the application of membrane bioreactor (MBR) for tapioca wastewater processing that contained chemical oxygen demand (COD) ranging from 4000-9000 mg/L. A preliminary study was initially conducted in order to evaluate membrane performance with respect to its flux with MLSS concentration ranging from 4,500 to 10,500 mg/L. It was clear that fouling was observed during the ...

Melosh rotations are defined for antiquarks that provide unitary transformations from uto v-spinor basis states. Methods for constructing a complete set of relativistic three-quark states are detailed for the nucleon, N∗(1520) and N∗(1535). States containing virtual antiquarks are constructed and a physical interpretation of v-spinor basis states in QCD is provided in terms of transition amplit...

Three inverse boundary value problems for the heat equations in one space dimension are considered. Those three problems are: extracting an unknown interface in a heat conductive material, an unknown boundary in a layered material or a material with a smooth heat conductivity by employing a single set of the temperature and heat flux on a known boundary as the observation data. Some extraction ...