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International Journal of Research and Reviews in Applied Sciences
ISSN: 2076-734X, EISSN: 2076-7366
Volume 17, Issue 3(December, 2013)
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1. |
CLASSIFICATION OF POSITIVE SOLUTIONS OF NONLINEAR SYSTEMS OF VOLTERRA INTEGRAL EQUATIONS |
by Youssef Raffoul & Amani Sayed |
Abstract |
We give asymptotic
classification of the positive solutions of a class of two-dimensional nonlinear
Volterra integro-differential equations. Also, we furnish necessary and conditions
for the existence of such positive solutions.
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International Journal of Research and Reviews in Applied Sciences
December 2013 -- Vol. 17 Issue 3 -- 2013 |
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2. |
ON JENSEN’S AND HERMITE-HADAMARD’S INEQUALITY |
by Zlatko Pavic & Vedran Novoselac
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Abstract |
The article deals with the generalizations of Jensen’s inequality in the discrete
and integral form. One generalization of Hermite-Hadamard’s inequality is also presented.
The transition from discrete to integral means is realized using the integral method
with convex combinations.
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International Journal of Research and Reviews in Applied Sciences
December 2013 -- Vol. 17 Issue 3 -- 2013 |
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3. |
LINEAR AND NONLINEAR OPTICAL RESPONSE OF Au AND Pt NANOPARTICLE SUSPENSIONS UNDER A LOW POWER LASER IRRADIATION AT 1064 nm |
by M. Eslamifar |
Abstract |
In this work,
nonlinear refraction properties of gold (Au) and platinum (Pt) nanoparticles dispersed
in the water are reported. The thermally induced effective nonlinear refractive
index due to nonlocal heat effect is characterized by Z-scan technique with a low
power continuous wave (CW) laser at 1064 nm. This allows us to measure thermo-optic
coefficient and effective nonlinear refractive index in the tested samples. Low
power optical limiting, with low limiting thresholds is obtained in the samples
based on thermal defocusing.
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International Journal of Research and Reviews in Applied Sciences
December 2013 -- Vol. 17 Issue 3 -- 2013 |
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4. |
FUNCTIONAL PLATING DEPOSITION IN NON-STATIONARY ELECTROLYSIS |
by Alexandr A. Khmyl & Vladimir L. Lanin |
Abstract |
The functional galvanic plating widely applied for electronic components, assembly
by soldering or microwelding technology, should possess a complex of the electro physical and mechanical properties providing high reliability of equipment. For
formation of the set properties of plating the new methods of galvanic deposition
in non-stationary electrolysis is perspective.
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International Journal of Research and Reviews in Applied Sciences
December 2013 -- Vol. 17 Issue 3 -- 2013 |
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5. |
OPOLOGICAL ANALYSIS OF THE DEFAULT MODE NETWORK: A GRAPH THEORY APPROACH |
by Ibrahim Eid Hassan Saleh |
Abstract |
Graph theory defines a graph as a set of nodes (in this study, regions of interest, ROIs) and edges (functional
connections). The present study aims to explore the topological properties of the
Default Mode Network (DMN) in the framework of graph theory and the alterations
induced on it by a cognitive task, with respect to the resting condition. The principal finding of the present study is that the default mode network of resting state condition
(DMNRest) have high local efficiency of information transfer, robustness,
better performance and high correlational strengths more than the default mode network
cognitive task condition (DMNTask).
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International Journal of Research and Reviews in Applied Sciences
December 2013 -- Vol. 17 Issue 3 -- 2013 |
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6. |
A DISCRETE PARAMETRIC MARKOV-CHAIN MODEL OF A TWO NON-IDENTICAL UNIT COLD STANDBY SYSTEM WITH PREVENTIVE-MAINTENANCE |
by Rakesh Gupta & Parul Bhardwaj |
Abstract |
This paper deals with the profit analysis of a two non-identical units (unit-1 and
unit-2) cold standby system model assuming two modes- normal and total failure of
each unit. The unit-1 is sent for preventive maintenance (PM) after its working for a random period of time. A single repairman is available with the system for
PM of unit-1 and repair of both units. The random variables denoting the time to
PM and PM time of unit-1, failure times and repair times of both units follow geometric
distributions with different
parameters. The various measures of system effectiveness
are obtained by using regenerative point technique.
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International Journal of Research and Reviews in Applied Sciences
December 2013 -- Vol. 17 Issue 3 -- 2013 |
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7. |
INVESTIGATION OF BIOHEAT TRANSFER EQUATION OF PENNES VIA A NEW METHOD BASED ON WRM & HOMOTOPY PERTURBATION |
by Shahnazari M., Aghanajafi C., Azimifar M. & Jamali H. |
Abstract |
Heat transfer has an important role in biological systems of living beings. Precise
evaluation of temperature distribution in live tissues can be effective in cure
of lots of diseases as like as cancer. Therefore, it is required to have an adequate
heat model to be able to study heat
transfer in live tissues. Several models have been offered by now which among them,
Pennes biothermal model has the most usage in evaluation of heat transfer in tissues
of living beings. Some researcher have analyzed the Pennes equation of biothermal
transfer by numeric methods. The goal of this study is to evaluate temperature distribution
in live tissues while the skin is under effect of frequency thermal flux. To perform
this study, the Pennes biothermal Equation has been analyzed by a wrm-homotopy perturbation
combination method. Comparison of results obtained in this study with other methods,
shows the capability of the method used to analyze these kind of problems. Finally
effect of time, distance from skin surface, frequency and amplitude of heat flux
and perfusion rate of blood on the temperature distribution will be evaluated.
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International Journal of Research and Reviews in Applied Sciences
December 2013 -- Vol. 17 Issue 3 -- 2013 |
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8. |
KINETIC ANALYSIS OF 2-HEPTENE REFORMING ON PLATINUM/ALUMINA CATALYST USING THE TIKHONOV REGULARIZATION TECHNIQUE |
by Aramide Adenike Adesina & Alfred Akpoveta Susu |
Abstract |
In this work,
the kinetic analysis of 2-heptene reforming on Platinum/Alumina catalyst was carried
out using the concentration-time data reported by Aberuagba [8]. The Tikhonov regularization
technique was used for the confirmation of the experimental concentration-time data to rate-concentration data. Due to the ill-posed nature
of the problem of obtaining of reaction rates from experimental
data, conventional
methods will lead to noise amplification of the experimental data. Hence, Tikhonov
regularization technique is preferably employed because it is entirely independent
of reaction rate models and it also manages to minimize noise amplification, thus,
leading to more reliable results. The kinetic parameters obtained by the application
of the Nelder-Mead simplex optimization technique to formulated mechanistic models
permit discrimination among rival kinetic models based upon physicochemical
criteria, analysis of the residuals, and thermodynamic
tests. The rate-determining
step was found to be the surface reaction of adsorbed methylcyclohexane to adsorbed
toluene with dissociative adsorption of bi-molecular hydrogen specie on the catalyst
surface.
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Source: |
International Journal of Research and Reviews in Applied Sciences
December 2013 -- Vol. 17 Issue 3 -- 2013 |
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9. |
MODELING THE INTERACTION OF EMOTION AND COGNITION |
by J. Ezquerro & M. Iza |
Abstract |
Research on the interaction between emotion and cognition has become particularly
active along the last years, so that lots of computational models of emotion have
been developed. However, to the date, none of them address fully the integration
of emotion generation and its effects in the context of cognitive processes. This
work tries to unify several models of computational emotions for embodied agents
with the work done in cognitive architectures, based on psychological theories and
applications.
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International Journal of Research and Reviews in Applied Sciences
December 2013 -- Vol. 17 Issue 3 -- 2013 |
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10. |
THE COUPLING EFFECT FROM THE ACTION OF MULTIPLE FACTORS ON THE COMPOSITE WALL WITH OUTER LIGHTWEIGHT INSULATING LAYER |
by Shengcai Li, Peng Cao & Yan Zhou |
Abstract |
The reason why covering plaster layers in lightweight insulating composite wall
are easily to be damaged is related with many factors. In this paper, the coupling
effect of multiple factors such as temperature, wind, gravity,
different physical and mechanical properties of constructional materials, is assumed
to be the cause. A set of special device
is designed to simulate and test the coupling effect.
And the test specimens based on practical project
are classified into two groups in given conditions. The distribution of temperature
and the characteristic curves of coupling stress and strain of different layers
in different conditions have been sorted out based on the data from the test and
theoretical analysis with FEM tools. The results show that the peak stress and strain
at some parts in covering layers is
larger under the impact of multiple factors than that of a single factor. The peak
stress and strain at covering layers
in the coupling situation is amplified up to75% compared with
that under temperature effect.
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International Journal of Research and Reviews in Applied Sciences
December 2013 -- Vol. 17 Issue 3 -- 2013 |
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11. |
SOLUTION OF TWO-DIMENSIONAL FREDHOLM INTEGRAL EQUATIONS OF THE FIRST KIND BY USING OPTIMAL HOMOTOPY ASYMPTITIC METHOD
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by M. Salameh Taleb Almousa & Ahmad Izani Md Ismail |
Abstract |
The purpose of this study is to present the optimal homotopy asymptotic method (OHAM) for solving two-dimensional linear and nonlinear Fredholm integral equations of the first kind. Several examples are illustrated to show that the method is effective and simple to apply for solving two-dimensional linear and nonlinear Fredholm integral equations of the first kind.
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Source: |
International Journal of Research and Reviews in Applied Sciences
December 2013 -- Vol. 17 Issue 3 -- 2013 |
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12. |
SOLITARY WAVE SOLUTIONS FOR SOME NON-LINEAR PARTIAL DIFFERENTIAL EQUATIONS USING SINE-COSINE METHOD |
by Yusur Suhail Ali |
Abstract |
This paper implemented the sine-cosine method for solving Nonlinear partial differential
equations PDES. Method has been successfully tested on Combined Kdv-Mkdv equation,
Sharma-Tasso-Olver equation, Coupled Klien-Gordon equation, Generalized-Pochhammer-Chree
equation (GPC). The calculations demonstrate the effectiveness and convenience of
the method for nonlinear system of PDEs.
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Source: |
International Journal of Research and Reviews in Applied Sciences
December 2013 -- Vol. 17 Issue 3 -- 2013 |
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13. |
TEMPERATURE DEPENDENCEFLUCTUATIONS OF SUPERCONDUCTING CORRECTIONS TO THE THERMAL CONDUCTIVITY IN METAL NANOGRAIN |
by Gorji Mohammad, Benam M.Reza & Adel Fereshteh |
Abstract |
Superconducting
fluctuations corrections on the thermal conductance in Nano grainmetals at different
range of temperature are calculated. In these temperature regimes Coulomb interaction
effects and weak localization effects (quantum interference) have an effective role
and the Weidman-Franzlow is violated. We calculate and investigate these deviancesin the
Weidman-Franz
low and Lorenz number.
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Source: |
International Journal of Research and Reviews in Applied Sciences
December 2013 -- Vol. 17 Issue 3 -- 2013 |
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14. |
EFFECT OF TANTALUM ADDITION TO THE MAGNETIC PROPERTIES OF CoCr ALLOY THIN FILMS |
by Usman M. Gana |
Abstract |
The effect of
tantalum on the magnetic properties of Co-alloy thin film is investigated. Samples
in which the tantalum substitutes into the hcp crystal structure of the alloy as
well as samples in which it is segregated to the grain boundaries are studied. Grain
boundary segregation (grain isolation) was found to decrease media parameters responsible
high media noise. Neither isolation nor substitution was found to improve saturation
magnetization.
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Source: |
International Journal of Research and Reviews in Applied Sciences
December 2013 -- Vol. 17 Issue 3 -- 2013 |
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