Abstract In this research, a generalized tool life modelling for considering non-stationary cutting conditions was developed . particular, the first time in literature, model conceived predicting of when spindle speed variation SSV , one most effective techniques suppressing regenerative chatter vibrations, is used. The proposed formulation takes into account main parameters and associated to A...

S. Kuznets's study that the average propensity to consume is a constant value were nexpected because they denied one of the basic provisions of the Keynesian theory. This fact was called "the riddle of Kuznets".  F. Modigliani and M. Friedman, using the hypothesis of the life cycle and the concept of constant income, proposed two options that explain its solution. But models should not explain,...

Constant head tests are commonly used for field measurements of fracture transmissivity. As a bulk transmissivity is measured each test section, it frequently unclear how this relates to the hydraulic properties individual fractures. The goal study determine if constant conducted at scales larger than average spacing can be generate discrete network (DFN) models that describe transport. methodo...