نتایج جستجو برای: dynamic model

تعداد نتایج: 2397552  

Journal: Money and Economy 2013
Iman Haqiqi, Marziyeh Bahalou Horeh ,

A large economic literature discusses the implications of export sanctions for a variety of states around the world. This paper investigates the macro-level consequences of imposing oil export barriers on an oil exporting country. We employ a large real financial computable general equilibrium for Iran. The model is calibrated based on 1999 Social Accounting Matrix for the economy of Iran inc...

Journal: :اقتصاد و توسعه کشاورزی 0
مهرداد باقری عبدالکریم اسماعیلی منصور زیبایی

this study develops a long run optimal pattern for nomadic ranchers of fars province under climate uncertainty by simulating dynamic process of livestock and forage productivity as well as employing dynamic stochastic programming. results indicate that the nomadic representatives do not perform, optimally. despite their attachments to livestock as an asset, and their life dependency on livestoc...

Journal: :caspian journal of environmental sciences 2008
s. mohammadi limaei p. lohmander

dynamic game theory is applied to analyze the timber market in northern iran as a duopsony. the nash equilibrium and the dynamic properties of the system based on marginal adjustments are determined. when timber is sold, the different mills use mixed strategies to give sealed bids. it is found that the decision probability combination of the different mills follow a special form of attractor an...

ژورنال: مواد پرانرژی 2011
احمدی, محمدتقی, لیاقت, غلامحسین, پیرعلی, پویا,

  Abstract   Many concrete structures may be exposed to high rate dynamic loadings like impacts, explosions, etc. Thus, it is necessary to know the behavior of this material in order to predict the response of the structure. Understanding the response of concrete at high strain rates is a main factor both for a successful design of protective structures and reducing the damage of constructions....

Hossein Shirazi, Nikbakhsh Javadian Reza Kia Reza Tavakkoli-Moghaddam

This paper presents a multi-objective mixed-integer nonlinear programming model to design a group layout of a cellular manufacturing system in a dynamic environment, in which the number of cells to be formed is variable. Cell formation (CF) and group layout (GL) are concurrently made in a dynamic environment by the integrated model, which incorporates with an extensive coverage of important ...

In this paper, a general elastoplastic-damage constitutive model considering the effect of strain rate has been developed. The derivation of this model has been cast into the irreversible thermodynamics with internal variables within the fundamentals of Continuum Damage Mechanics (CDM). The rate effect has been involved as an additional term into the plastic yield surface (dynamic plastic yield...

The purpose of this paper is concerned with the mathematical model development issues, necessary for a better prediction of dynamic responses of articulated rotor helicopters. The methodology is laid out based on mathematical model development for an articulated rotor helicopters, using the theories of aeroelastisity, finite element and the time domain compressible unsteady aerodynamics. The he...

K Kaur K.C Gupta R Kakar,

The purpose of this paper is to analysis the viscoelastic models under dynamic loading. A five-parameter model is chosen for study exhibits elastic, viscous, and retarded elastic response to shearing stress. The viscoelastic specimen is chosen which closely approximates the actual behavior of a polymer. The module of elasticity and viscosity coefficients are assumed to be space dependent i.e. f...

We define a combined DEA score to evaluate efficiency in agricultural research. The production model we propose considers efficiency measurements under variable returns to scale for each year in the period 2012–2017. We postulate a first-order autoregressive process in the presence of covariates, to explain efficiency. Powers of the autocorrelation coefficient estimated assuming a dynamic panel...

2002
Lihua Yue Xiaoyu Yang Qunfeng Dong

It is of significant value to reduce users’ communication cost to the lowest possible degree, especially in the mobile communication environment that is becoming more and more prevailing. Scientists have discovered that users’ communication cost can be effectively reduced by employing some more flexible data distribution algorithms for users’ data. In this Paper, a new algorithm is suggested to...

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