نتایج جستجو برای: assuming model
تعداد نتایج: 2135835 فیلتر نتایج به سال:
Abstract We introduce a methodology to extend the Fisher matrix forecasts mildly non-linear scales without need of selecting cosmological model. make use standard perturbation theory for biased tracers complemented by counterterms, and assume that distances can be measured accurately with candles. Instead choosing specific model, we parametrize linear power spectrum growth rate in several k z b...
the pile-raft foundation is a combination of a raft foundation with piles. pile-raft foundation has been widely designed, assuming all structure loads to be transferred to piles without considering contribution of the load taken by contact surface between raft and soil. methods of analysis currently used in practice are based upon relatively conservative assumptions of soil behavior or on the l...
During the flood development in an oil field, the creep characteristic of mudstone is one of the important factors causing casing damage. In this study, based on the theory of fractional order differential and taking into account the creep damage evolution rules, a fractional nonlinear creep-damage model is proposed to reflect the instantaneous deformation in loading processes and the accelerat...
A numerical model is developed to simulate the transport phenomena in the flow channel between parallel plates with porous and non-porous (or impermeable) walls. The continuity and momentum equations were solved first, assuming the wall Reynolds number in the range of with the suction or injection of air at a speed equal to the uniform inlet velocity. The results show that at constant inlet and...
Background and Aim: Hospitals as one of the major institutions providing health care services within the health sector utilize a high percentage of the sector's key resources to respond to the needs of consumers. The aim of the present study was to identify factors affecting technical, scale and management efficiency of the Social Security Organization (SSO) hospitals during the period 2007-200...
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