مقاله ISI با ترجمه فارسی تحلیل تاثیر تکنیک های استخراج داده بر پایگاه داده ها

Accepted 31 December 2011
Available online 2 February 2012
Keywords:
Data acquisition
Databases
Data warehouse
Data mining
Data miner
Intelligent miner

a b s t r a c t
In today’s information society, we witness an explosive growth of the amount of information becoming
available in electronic form and stored in large databases. Data mining can help in discovering knowledge.
Data mining can dig out valuable information from databases in approaching knowledge discovery
and improving business intelligence. In this paper, we have discussed the involvement and effect of data
mining techniques on relational database systems, and how its services are accessible in databases, which
tool we require to use it, with its major pros and cons in various databases. Through all this discussion we
have presented how database technology can be integrated to data mining techniques.
 2012 Elsevier Ltd. All rights reserved.
1. Introduction
In recent years data mining has become a very popular technique

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for extracting information from the database in different
areas due to its flexibility of working on any kind of databases
and also due to the surprising results [1].
Data mining is the search for valuable information in large
volumes of data [1]. With the increase of availability of databases
containing structures, mining techniques especially designed for
this type of data are becoming more and more important [2]. To
improve both software productivity and quality, software engineers
are increasingly applying data mining algorithms to various
Software Engineering tasks [3].
The progress in data acquisition and successful development of
storage technology at cheaper rates, along with limited human
capabilities in analyzing and understanding big databases have
tempted scientists and researchers to move forward towards the

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can provide business intelligence to generate new opportunities
(Bortiz & Kennedy, 1995; Fletcher & Goss, 1993; Langley &
Simon, 1995; Lau, Wong, Hui, & Pun, 2003; Salchenberger, Cinar,
& Lash, 1992; Su, Hsu, & Tsai, 2002; Tam & Kiang, 1992; Zhang,

Hu, Patuwo, & Indro, 1999).
تعداد صفحه : 10

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سریع ترین خودروهای جاده ای سال؛ از کوئنیگزگ آگرا RS تا لامبورگینی آونتادور

دانلود مقاله ISI با ترجمه فارسی تحلیل غیر خطی ویسکو الاستیک ضخامت جداره لوله ...

mechanical behaviour of thick multilayered cylinders. The original contribution of this
work is to provide novel approximate analytical solutions to compute the timedependent
internal stress state throughout the pipe thickness within the framework of
nonlinear viscoelasticity theory. The structures considered are thick, multilayered

anisotropic infinitive long cylinders subjected to axisymmetric mechanical loading.
Under such conditions there is an exact elastic solution which naturally satisfies
equilibrium, strain-displacement, compatibility and boundary conditions for the stated
constitutive equations and loading. Due to the continuous stress variations throughout
the cylinder thickness, the proposed nonlinear viscoelastic solution assumes the
averaged stress state to calculate the nonlinear elastic and viscoelastic factors in each
3
layer. Furthermore the solution is obtained assuming that the creep strains, within each
layer, are constant through the thickness. The proposed algorithm converges to the exact
solution when the number of layers is artificially increased. For the linear viscoelastic
case the proposed solution proved to match the exact known solution for isotropic

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viscoelastic materials. Finally several invented cases are run to illustrate the importance
of the viscoelasticity phenomenon on the internal stress field throughout thick laminated
cylinders.
KEYWORDS: Polymer–matrix composites (PMCs); Creep; Elasticity; Analytical
modelling; Durability.
INTRODUCTION
The hollow cylinders or cylinders are very common structural elements, used in many
applications including trusses, hoses, piping systems and drive shafts. The effort to
improve oil production riser performance lead to the possible use of risers made of
polymer matrix composites to bring the oil to surface platforms in the offshore
exploration at waster depth of 2 km or more. Consequently the increasing use of
polymer matrix composites in civil engineering applications has renewed interest in
problems of stress analysis of cylindrical laminated composite structures.
Many analytical works about stress analysis of composite cylindrical shells have been

مقاله ISI با ترجمه فارسی بهینه سازی ضخامت دیواره سیلندر با دیواره ضخیم ...

www.elsevier.com/locate/ijpvp
* Corresponding author. Tel.: C98 21 616 5510; fax: C98 21 600 0021.
E-mail address: [e-mail] (M.H. Kargarnovin).
the effect of convective heat transfer on the minimum

thickness of the vessel, and design graphs for several

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فرهنگ اصطلاحات

مقاله ISI با ترجمه مدل ساختار مایع تعاملی برای نانو لوله های کربنی با در نظرگرفتن ...

of a single-walled carbon nano-tube (SWCNT) conveying
viscous fluid embedded in an elastic medium. They revealed that
the frequency increased as the values of the viscosity parameter increased.
Soltani et al. [15] developed a transverse vibrational model
for a viscous fluid-conveying SWCNT embedded in biological soft
tissue. Their investigation determined that the structural instability
and the associated critical flow velocity could be affected by
the viscosity of the fluid and the nonlocal parameter. Khoddami
et al. [16] studied electro-thermo nonlinear vibration and instability
of embedded double-walled Boron Nitride nano-tubes

(DWBNNTs) conveying viscous fluid based on nonlocal piezoelasticity
theory. They reported that increasing the small scale parameter
decreased the real and imaginary parts of frequency and
critical fluid velocity. Furthermore, they concluded that the effect
of fluid viscosity on the vibration and instability of DWBNNTs
might be ignored. In many recent studies various size-dependent
continuum theories have been developed for vibration and stability
analysis of CNTs conveying fluid. Lee and Chang [17], Zhen
0927-0256/$ – see front matter  2013 Elsevier B.V. All rights reserved.
http://dx.doi.org/10.1016/j.commatsci.2013.04.047
⇑ Corresponding author. Tel.: [phone]; fax: [phone].

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E-mail addresses: [e-mail] (M. Mirramezani), hrmirdamadi@
cc.iut.ac.ir (H.R. Mirdamadi), [e-mail] (M. Ghayour).
Computational Materials Science 77 (2013) 161–171
Contents lists available at SciVerse ScienceDirect
Computational Materials Science
journal homepage: www.elsevier.com/locate/commatsci
and Fang [18], Jannesari et al. [19] included the effect of small-size
into equations of motion by using nonlocal elasticity in their studies
and showed that increasing nonlocal parameter had the effect
of a decrease in the critical velocity of fluid. Ke and Wang [20]
investigated vibration and instability of fluid-conveying doublewalled
carbon nano-tubes based on modified couple stress theory.
They showed that the imaginary component of the frequency and
the critical flow velocity of the CNTs increased with an increase in