knowledge on animal requirement, available forage and its quality is fundamental for successful livestock and range management. since sheep is dominant grazing animal of rangelands in iran and there are over 27 sheep breeds and each breed has special body size, physiological condition and consequently different daily nutrition requirement, animal unit should be determinated for dominant breed o...

An equivalent circuit, made of the chain connection of a number of T-type two-port networks, is proposed for the very accurate representation of the frequency-domain behavior of radially inhomogeneous solitary cylindrical structures, the individual two-port networks being made of frequency-independent R, L and C lumped elements. The accuracy of the model is dictated by the number of two-port ne...

In local effective potential energy theories such as the Hohenberg-Kohn-Sham density functional theory (HKS-DFT) and quantal density functional theory (Q-DFT), electronic systems in their ground or excited states are mapped to model systems of noninteracting fermions with equivalent density. From these models, the equivalent total energy and ionization potential are also obtained. This paper co...

Alternative approaches to modelling distributional and welfare effects of changes in policy and the economic environment in developing and transition countries are surveyed. Microsimulations range from pure accounting approaches to models with behavioural equations based on econometric estimates and various dynamic models. Microsimulation accounting models are key to analysing the impact effect...

Interrupted aging in the two-dimensional Ising spin glass model with Gaus-sian couplings is established and investigated via extensive Monte-Carlo simulations. The spin autocorrelation function scales with t/τ (t w), where t w is the waiting time and τ is equal to t w for waiting times smaller than the equilibration time τ eq. The spatial correlations scale with r/ξ(t w), where the correlation ...

Abstract An approach is presented for modelling the noise propagation beneath train floor and this applied to rolling sources. It assumed that sound incident on made up of a direct reverberant component. A combination two numerical approaches considered deal with these: an equivalent source model, represent component, statistical energy analysis (SEA) part. In wheel replaced by monopole dipole ...

The development of hybrid technology can effectively solve the problems high pollution and energy consumption levels automobiles. Therefore, an prediction control algorithm for vehicles based on a minimum equivalent fuel model is proposed. model’s battery power to consumption, sum engine established as objective function. By utilizing these factors, innovative was constructed that could be used...

We present a holographic dark energy model of the universe considering modified generalized Chaplygin gas (GCG). The modified GCG behaves as an ordinary barotropic fluid in the early epoch when the universe was tiny but behaves subsequently as a ΛCDM model at late epoch. An equivalent model with scalar field is obtained here by constructing the corresponding potential. The holographic dark ener...

Two high melt episodes occurred on the Greenland ice sheet in July 2012, during which nearly the entire ice sheet surface experienced melting. Observations from an automatic weather station (AWS) in the lower ablation area in South Greenland reveal the largest daily melt rates (up to 28 cm d−1 ice equivalent) ever recorded on the ice sheet. The two melt episodes lasted 6 days, equivalent to 6% ...