هنجاریابی ابزار ارزیابی بلادرنگ مهارتهای سواد ...
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تاریخ: 1397/9/19 ساعت: 13:09
با توجه به نبود ابزار, استاندارد برای سنجش مهارتهای سواد, اطلاعاتی دانشآموزان دورة ابتدایی در کشور ما، پژوهش حاضر به هنجاریابی, ابزار ارزیابی, بلادرنگ, مهارتهای سواد اطلاعاتی (تریلز) در دانشآموزان پایة
بازاندیشی فرایند تغییر برنامهریزی شده از منظر ...
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تاریخ: 1397/9/19 ساعت: 13:09
هدف: هدف این مقاله، ارائه مدل نظری از چسبندگی دانش و آموختهزدایی بهعنوان عوامل مؤثر بر فرایند, تغییر, برنامهریزی شده در کتابخانهها است تا نشان دهد این عوامل چگونه میتوانند بر هر مرحله از فرایند تغی
نظریهی ترکیبات اطلاعات: عمق و گسترهی (ابعاد ...
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تاریخ: 1397/9/19 ساعت: 13:09
نظریهی ترکیبات, اطلاعات,: عمق و گسترهی ( ابعاد, شناختی و کاربردی) اطلاعات در ترکیبات اطلاعاتدکتر غلامرضا حیدری چکیده:هدف: هدف این پژوهش، نشان دادن جایگاه اطلاعات و قدرت قبض و بسط و رفت و برگشت ترکیبات ا
بررسی رابطه بین استفاده از شبکه اجتماعی علمی ریسرچ ...
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تاریخ: 1397/9/19 ساعت: 13:09
هدف: هدف این پژوهش بررسی, وضعیت استفاده, از شبکة اجتماعی, علمی, ریسرچ,گیت و رابطة آن را با سرمایة اجتماعی در میان اعضای هیئت علمی دانشگاه علوم پزشکی جندی شاپور اهواز میباشد. روش: پژوهش حاضر به روش پیمایش
نشانهشناسی و اف.آر.بی.آر.
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تاریخ: 1397/9/19 ساعت: 13:09
هدف: پاسخگویی به این سوال است که آیا الگوی اف.ار.بی.آر. دارای ساختاری نشانهشناسی است؟ آیا میتوان الگوی اف.آر.بی.آر. را بر اساس نشانهشناسی بررسی نمود؟ روش: روش پژوهش تحلیل مفهومی است. بررسی تطبیقی ب
Cracking elements method for simulating complex crack growth
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تاریخ: 1397/9/19 ساعت: 13:09
The cracking elements method (CEM) is a recently proposed numerical approach for simulating fracture of quasi-brittle materials. This method is built in the framework of conventional finite element method (FEM) based on standard Galerkin approximation, which models the cracks with disco ected cracki...
Scale-Dependent Dynamic Behavior of Nanowire-Based Sensor in Accelerating Field
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تاریخ: 1397/9/19 ساعت: 13:09
The accelerating fields (e. g. centrifugal acceleration and constant acceleration) can change the physical performance of nano-sensors significantly. Herein, a new size-dependent model is developed to investigate the scale-dependent dynamic behavior of nanowire-fabricated sensor operated in an accel...
An efficient numerical method to solve the boundary layer flow of an Eyring-Powell ...
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تاریخ: 1397/9/19 ساعت: 13:09
In this paper, the boundary layer flow of an Eyring-Powell non-Newtonian fluid over a linearly stretching sheet is solved using the combination of the quasilinearization method and the Fractional order of Rational Chebyshev function (FRC) collocation method on a semi-infinite domain. The quasilinear...
Hygro-Thermal Nonlinear Analysis of a Functionally Graded Beam
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تاریخ: 1397/9/19 ساعت: 13:09
Nonlinear behaviour of a functionally graded cantilever beam is analyzed under non-uniform hygro-thermal effect. In the solution of problem, finite element method is used within plane solid continua. Total Lagrangian approach is used in the nonlinear kinematic relations. In nonlinear solution, Newto...
Impact of magnetic field on convective flow of a micropolar fluid with two parallel heat sources
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تاریخ: 1397/9/19 ساعت: 13:09
A numerical study is performed to analyze the buoyancy convection induced by the combinedeffect of temperature and species gradients inside an inclined square cavity. The two side walls of the cavity
Failure Procedure in Adhesive Composite Joints under Different types of Loading
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تاریخ: 1397/9/19 ساعت: 13:09
In this paper, we have used numerical simulation to study failure of adhesive joints in composite plates. To determine the failure load, adhesive joints are subjected to different types of loading and gradual failure of the joint is studied using the finite element method. The composite material fai...
Scalings of inverse energy transfer and energy decay in 3-D decaying isotropic turbulence with ...
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تاریخ: 1397/9/19 ساعت: 13:09
Energy development of decaying isotropic turbulence in a 3-D periodic cube with non-rotating or rotating frames of reference is studied through direct numerical simulation using GPU accelerated lattic
Axial and torsional free vibrations of elastic nano-beams by stress-driven two-phase elasticity
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تاریخ: 1397/9/19 ساعت: 13:09
Size-dependent longitudinal and torsional vibrations of nano-beams are examined by two-phase mixture integral elasticity. A new and efficient elastodynamic model is conceived by convexly combining the
Traveling Waves of Some Symmetric Planar Flows of Non-Newtonian Fluids
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تاریخ: 1397/9/19 ساعت: 13:09
We present some variants of Burgers-type equations for incompressible and isothermal planar flow of viscous non-Newtonian fluids based on the Cross, the Carreau, the Power-law rheology models, and a symmetry assumption on the flow. We numerically solve the associated traveling wave equations by usin...
Modified multi-level residue harmonic balance method for solving nonlinear vibration problem of ...
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تاریخ: 1397/9/19 ساعت: 13:09
Nonlinear vibration behavior of beam is an important issue of structural engineering. In this study, a mathematical modeling of a forced nonlinear vibration of Euler-Be oulli beam rest on nonlinear e
The solar air channels: Comparative analysis, introduction of arc-shaped fins to improve the ...
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تاریخ: 1397/9/19 ساعت: 13:09
The problem under investigation contains a computational simulation of a specific heat exchanger with complex geometry fins. The problem solved is potentially interesting for researchers and engineers
Residual power series method for solving time-fractional model of vibration equation of large ...
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تاریخ: 1397/9/19 ساعت: 13:09
The primary aim of this manuscript is to present the approximate analytical solutions of the time fractional order Vibration Equation (VE) of large membranes with the use of aniterative technique namely Residual Power Series Method (RPSM). The fractional derivative isdefined in Caputo sense. Example...
Transient MHD convective flow of fractional nanofluid between vertical plates
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تاریخ: 1397/9/19 ساعت: 13:09
Effects of the uniform transverse magnetic field on the transient free convective flowsof a nanofluid with generalized thermal transport between two vertical parallel plates have beenanalyzed. The fluid temperature is described by a time-fractional differential equation withCaputo derivatives. Close...
Electro-magneto-hydrodynamics flows of Burgers fluids in cylindrical domains with time ...
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تاریخ: 1397/9/19 ساعت: 13:09
This paper investigates the axial unsteady flow of a generalized Burgers’ fluid with fractional constitutive equation in a circular micro-tube, in presence of a time-dependent pressure gradient
ISOGEOMETRIC TOPOLOGY OPTIMISATION OF CONTINUUM STRUCTURES USING EVOLUTIONARY ALGORITHM
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تاریخ: 1397/9/19 ساعت: 13:09
Topology optimization has been an interesting area of research in the recent years. The main focus of this paper is to use evolutionary swarm intelligence algorithm to perform Isogeometric Topology op