This paper proposes a method for ranking decision making units (DMUs) using some of the multiple criteria decision making / multiple attribute decision making          (MCDM /MADM) techniques, namely, interval analytic hierarchy process (IAHP)          and the technique for order preference by similarity to an ideal solution (TOPSIS).          Since the efficiency score of unity is assigned to ...

nowadays, environmental problems such as air pollution are the most effective factors in metropolitans. so that, the most important effect of environmental factors such as air pollution has been on prices of residential houses. so, investigation the effects of different factors on residential houses shows that prices have special importance. this article has investigated an environmental approa...

Runoff leads to the leaching of soil nutrients, transports the topsoil particles and deposits the sediments in water reservoirs. Recognition of different environmental factors affecting the runoff properties and water infiltration depth has a great importance concerning soil for the integrated management of watershed and the distinguishment of complex hydrological processes. Thus, this research...

Abstract The aim of the present study is to explore strategies in enumerating units three dimensional (3D) arrays. We analyse enumeration students grade 3 (ages 8 9) situations cubical and spherical representations 3D By exploring students’ these two situations, we find that difficulties arrays can be traced units-locating, with consequence applying double triple counting. Our results also indi...