hysteresis has been widely recognized in the soil water relationship. in this paper, a detailed review of hysteresis was performed in relation to its models. so far, different models have been suggested to describe hysteresis in the water retention curve (wrc) that could be categorized into two main groups: conceptual and empirical models. the models in the first group are based on the domain t...

Friedman's 1953 essay " The methodology of positive economics " is undoubtedly one of the—or perhaps the—most influential and most widely and hotly debated papers on economic methodology. What economic methodologist would not dream of having more than 2,500 citations in Google Scholar for writing " the only essay on methodology that a large number, perhaps majority, of economists have ever read...

medical men. The editors are, however, commendably cautious as to the possible existence and viability of a philosophy ofmedicine as an independent enterprise akin to the philosophy of science, which is an established discipline like the philosophy of biology. They do believe, nevertheless, that common ground exists between physicians and philosophers, and that, as Temkin has suggested, there i...

in the present work a two dimensional numerical investigation of steam flows in a turbine blade passage is performed. a finite volume approach has been used and the pressure–velocity coupling is resolved using the simple algorithm. the purpose of this paper is to find that one of the used turbulent models is better for this kind of studies. a structured mesh arrangement with boundary layer mesh...

in this research between 3-dimensional and axisymmetric modeling for movement of nano-particles in passing through a aerodynamic lens, and also between these models and famous model of wang & liu was compared. for this purpose, output of nano-particles penetration, divergence angel, and nano-particle velocity with wang & liu model was compared. geometrical model used for aerodynamic lens compar...