نتایج جستجو برای: model analysis

تعداد نتایج: 4438736  

Journal: :international economics studies 0
charles harvie issa ali

â â â â  libya experienced a substantial increase in oil revenue as a result of increased oil prices during the period of the late 1970s and early 1980s, and again after 2000. recent increases in oil production and the price of oil, and their positive and negative macroeconomic impacts upon key macroeconomic variables, are of considerable contemporary importance to an oil dependent economy such...

Journal: :journal of language and translation 0
shoaleh malekie department of english, faculty of humanities, garmsar branch,islamic azad university, garmsar, iran massood yazdanimoghaddam department of english, faculty of humanities, garmsar branch,islamic azad university, garmsar, iran

despite the crucial role of introductory sections in argumentative academic writing, the effects of genre- based approaches to writing introductory paragraphs have not been much explored yet. the present study aimed to investigate whether the provision of genre knowledge through modeling and non-modeling could enhance learners’ ability in writing introductory paragraphs of argumentative essays....

Journal: :journal of computational applied mechanics 0
ali ghorbanpour arani faculty of mechanical engineering, university of kashan, kashan , islamic republic of iran hassan baba akbar zarei faculty of mechanical engineering, university of kashan, kashan , islamic republic of iran elham haghparast faculty of mechanical engineering, university of kashan, kashan , islamic republic of iran

in the present study, modelling and vibration analysis of carbon nanotubes/ fiber/ polymer composite microplates are investigated. the governing equations of the carbon nanotubes/ fiber/ polymer composite microplates are derived based on first order shear deformation plate theory, rather than other plate theories, due to accuracy and simplicity of polynomial functions. the modified couple stres...

Journal: :international journal of maritime technology 0
farhad hosseinlou university of tabriz alireza mojtahedi university of tabriz

marine industry requires continued development of new technologies in order to produce oil. an essential requirement in design is to be able to compare experimental data from prototype structures with predicted information from a corresponding analytical finite element model. in this study, structural model updating may be defined as the fit of an existing analytical model in the light of measu...

Journal: :journal of health management and informatics 0
mehrdad kargari mostafa asadi

introduction: internet searches suggest people need to check the appropriate and correct information in the field of health. meanwhile, due to the rapid growth of new technologies such as mobile technology, which today is universally accessible to all members of society, has been created a new  and  appropriate channel to offer health services that use this technology to propose best value tail...

Journal: :iranian journal of public health 0
leili tapak hossein mahjub majid sadeghifar massoud saidijam jalal poorolajal

background: one substantial part of microarray studies is to predict patients’ survival based on their gene expression profile. variable selection techniques are powerful tools to handle high dimensionality in analysis of microarray data. however, these techniques have not been investigated in competing risks setting. this study aimed to investigate the performance of four sparse variable selec...

Journal: :amirkabir international journal of electrical & electronics engineering 2015
a. mahmoudi s. h. hosseinian m. kosari

the stability analysis of islanded inverter-based microgrids (ibmgs) is increasingly an important and challenging topic due to the nonlinearity of ibmgs. in this paper, a new linear model for such microgrids as well as an iterative method to correct the linear model is proposed. using the linear model makes it easy to analyze the eigenvalues and stability of ibmgs due to the fact that it derive...

Journal: :iranian journal of optimization 2009
k. shahroudi

this paper reports a survey and case study research outcomes on the application of data envelopment analysis (dea) to the ranking method of european foundation for quality management (efqm) business excellence model in iran’s automotive industry and improving benchmarking process after assessment. following the global trend, the iranian industry leaders have introduced the efqm practice to thei...

Journal: :int. journal of mining & geo-engineering 2012
a. agah f. doulati ardejani h. ghoreishi

risk-based assessment methods are commonly used at the contaminated sites by hydrocarbon pollutants. this paper presents the results of a two-dimensional finite volume model of reactive transport of biodegradable btex which have been developed for the saturated zone of an unconfined aquifer in the pump station area of tehran oil refinery, iran. the model governing equations were numerically sol...

Journal: :international journal of data envelopment analysis 2014
p. zamani f. hosseinzadeh lotfi

data envelopment analysis (dea) is a technique used to evaluate the relative efficiency of comparable decision making units (dmus) with multiple input-output. it computes a scalar measure of efficiency and discriminates between efficient and inefficient dmus. it can also provide reference units for inefficient dmus without consideration of the decision makers’ (dms) preferences. in this paper, ...

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