Clean energy harvesting and usage has gained considerable attention in the last few decades. While the horizontal axis wind turbines have been used extensively, they have certain defects and functional limitations. In the present paper, a novel oscillatory wind turbine is proposed. The conceptual design of the new turbine together with its configuration is explained. Dynamical equations of the ...

Hexagrid structural system is an innovated system with structural behavior which is similar to a tubular system. In this paper, a numerical study is conducted to estimate the seismic performance of horizontal hexagrid concerning the combined horizontal and vertical hexagrid, tubular and diagrid structural systems. First 30 and 50 story buildings are modeled using ETABS, then pushover and nonlin...

this paper analyses the impact of sanctions against iran in addition to other country-specific determinants on intra-industry trade between iran and shanghai cooperation organization (sco) countries over the period 1997-2013. by disentangling total intra-industry trade (iit) into horizontal and vertical iit and after investigating bilateral trade pattern between iran and sco countries, determin...

5 We present a simple semi-empirical model to explore the hypothesis that the Madden-Julian 6 oscillation can be represented as a moisture mode destabilized by surface flux and cloud7 radiative feedbacks. The model is one-dimensional in longitude; vertical and meridional 8 structure are entirely implicit. The only prognostic variable is column water vapor, W. The 9 zonal wind field is an instan...

Recently, concerning failure of structures due to earthquakes, special investigations of near fault ground motions have been noticed. Hence, in this paper, characteristics of near field ground motions have been considered in horizontal and vertical directions. In this consideration, the record averages have been compared with Uniform Building Code and Eurocode8 spectra in two levels. In additio...