This paper presents the results of reliability analyses load-carrying capacity circular concrete filled steel tubes (CFST) using different codes. Four parameters that govern CFST were considered as variables. These variables include yield strength steel, concrete, diameter CFST, and thickness tube. The Monte Carlo technique was used for simulation. Simulations conducted, obtained capacities ana...

in this paper, power system restoration in the presence of svc and tcsc in partial outage conditions is considered and a new method for maximum load restoration using different control variables is presented. control variables are tap of transformers, generation rescheduling and operating points of facts devices. objective function is restored load (to be maximized) and constraints are voltage ...

To realize sharing and reuse of sensor data and improve interoperability, semantic sensor web (SSW) is proposed to add semantic information to existing sensor networks by utilizing domain, spatial and temporal anthologies and other related semantic technology. This paper presents state of the art of SSW from various aspects from the basic concepts, characters of SSW and the core technologies of...

The surface tooth wear which occurs at the gear contact region due to inadequate contact strength of the tooth is one of the predominant modes of gear failures. Currently, higher contact ratio spur gears are increasingly used in power transmission applications such as aircraft, wind turbine, automobiles and compact tracked vehicles due to their high load carrying capacity.  In this work, the di...

one of the purposes of ecotourism is to relax and aspirate the natural energy. sacred and energetic sites are the locations for experiencing the relaxation. since 2005 the ecotourism for aspirating the natural energy or spiritual ecotourism has been developed in iran. there are some places in iran which have a kind of energy as subtle energy for increasing personal health and awareness. these p...