there are  many  definitions  about  economy . according  to  one of  the  famous  accepted  definitions , economic  laws  have  classified  to two  groups. both  of  them  are  influenced  by  social  structure  and  it’s  changes  so  they  are  different  in  various  societies . movement  from  one  society   to  another  happens  due  to “intellectualize” , principal  maximum  production  ...

My research addresses the role that digital technology plays in retailing and distributing products, and the impact that it has on firm incentives, inter-firm relationships, and consumers. This area of research is important not only because digital technology affects a growing set of product markets, but also because the nature of digital technology allows for the construction of much more gran...

A new failure criterion was presented to predict the ultimate strength of shale under the triaxial and polyaxial state of stress. A database containing 93 datasets was obtained from the results of the uniaxial, triaxial, polyaxial compressive tests, an indirect tensile test was collected from reliable references, and this test was carried out on the shale samples taken from the southwestern oil...

Since the early 1980s, the core capitalist economies of North America and Western Europe have undergone fundamental transformations in their political-economic constitution and socio-spatial organization. In economic geography, these massive transformations have been described variously through such concepts as the “new industrial divide/space”, “cultural/symbolic economy”, “regional innovation...