this paper has focused on vibration and buckling of thin rectangular plates when at least two opposite sides are simply supported condition and subjected to axial and biaxial initially stresses. analysis is based on exact solution method, without further usage of any approximate method. first analytic techniques are used to discuss the free vibrations of plate. then, natural frequencies and cri...

Plate divergence along mid-ocean ridges is accommodated through faulting and magmatic accretion, and, at overlapping spreading centers (OSC), distributed across two curvilinear ridge axes. One-meter resolution bathymetry acquired by autonomous underwater vehicles, combined with distribution ages of lava flows, used to: (a) analyze the spatial temporal faults, fissures in OSC between distal sout...

Some new inequalities related to Jensen and Ostrowski inequalities for general Lebesgue integral are obtained. Applications for $f$-divergence measure are provided as well.

Plate tectonics was originally established as a kinematic theory of global tectonics, in which the Earth’s rigid outer layer, lithosphere, consists different size plates that move relative to each other along divergent, convergent or transform boundaries overlying ductile asthenosphere. It comprises three elements: lithosphere plates, asthenosphere, and coupled movement systems. operates throug...

Recently, we have used the symmetric bracket of vector fields, and developed the notion of the symmetric derivation. Using this machinery, we have defined the concept of symmetric curvature. This concept is natural and is related to the notions divergence and Laplacian of vector fields. This concept is also related to the derivations on the algebra of symmetric forms which has been discu...

russia and iran, one with european background and slavic racial origins with the other one being of asian descent with non-slavic racial origins, are playing their roles in building regional and international order according to their respective capacities, capabilities. geopolitical and geostrategic developments and differences in proclaimed and practical approaches have historically changed th...