International Journal of Engineering & Mathematical Sciences
  (Print) 2319 - 4537
(Online) 2319 - 4545
  List of Volumes
Volume 1(2012)
 Issue: 1(January - June), 2012
Volume 2(2012)
 Issue: 1 (July - Dec), 2012
Volume 3(2013)
 Issue : 1(January - June), 2013
Volume 4(2013)
 Issue : 1 (July - Dec.) 2013
Volume 5(2014)
 Issue : 1 (January - June), 2014
Volume 6 (2014)
 Issue : 1 (July - Dec.) 2014
Volume 7 (2015)
 Issue : 1 (January - June), 2015
Volume 8 (2015)
 Issue : 1 (July - Dec.) 2015
Volume 9 (2016)
 Issue : 1 (January - June), 2016
Volume 10 (2016)
 Issue : 1 (July - Dec.) 2016
Volume 11 (2017)
 Issue : 1 (January - June), 2017
Volume 12 (2017)
 Issue : 1 (July - Dec.) 2017
Volume 13 (2018)
 Issue : 1 (January - June), 2018
Volume 14 (2018)
  Issue : 1 (July - Dec.) 2018
Volume 15 (2019)
 Issue : 1 (January - June), 2019
   International Journal of Engineering & Mathematical Sciences
IJEMS,Volume 5(2014), Issue : 1 (January - June), 2014    Collapse all | Expand all
1. Water Quality Improvements of a tropical Water Body with Special References to Motia Tank, Bhopal (M.P), India
Author : Kalpana Kumari Thakur, Avinash Bajpai & Shailbala Singh Baghel
Keyword : Toxic, Contaminated, Aeration system, Feasibility & Alkalinity

Volume: 5,Issue:1,PP: 1 - 6,Year: (2014)
Water is an essential element for existence of all form of life on earth. In India, many of its surface and ground water resources are contaminated by biological, toxic, organic, and inorganic pollutants.In many cases, these sources have been rendered unsafe for human consumption as well as for recreational activities. The poor water quality contributes to water scarcity as it limits its availability for human consumption. The water body under investigation is Motia Tank of Bhopal (M.P.), India, receives large amount of household waste, sewage, surface runoff & washing of clothes etc., hence its water quality is depleted and unsafe for drinking purpose. It can be used for secondary purpose after the necessary treatments. The water quality improves to a large extent by installing a floating fountain type of aeration system in the tank. The physico-chemical parameters like DO, BOD, COD, total hardness & alkalinity were analysed quarterly from Dec 2011 to May 2012 using standard methods to assess the effectiveness of aeration system.
2. (G, D)-Number of Some Special Graphs
Author : K. Palani and S. Kalavathi
Keyword : Domination, Geodomination, (G, D)-number

Volume:5,Issue:1,PP: 7 - 15,Year:(2014)
Let G = (V, E) be any graph. A (G, D)-set of a graph G is a subset S of vertices of G which is both a dominating and geodominating (or geodetic) set of G. A (G, D)-set S of G is said to be a minimal (G, D)-set of G if no proper subset of S of V is a (G, D)-set of G. The minimum cardinality of all minimal (G, D)-sets of G is called the (G, D)-number of G. It is denoted by G(G). In this paper, we find the (G, D)-number of some special graphs.
3. Propagation of Rayleigh Waves through the Liquid Layer In The Presence of Horizontal Discontinuity
Author : Jagdish Singh and Rajesh Kumar
Keyword : Horizontal Discontinuity, Scattering, Fourier Transform, Wiener-Hopf Technique.

Volume:5,Issue:1,PP:16 - 32,Year:(2014)
The problem of propagation of Rayleigh waves through the liquid layer overlying a solid half space in the presence of horizontal discontinuity has been studied in this paper. The discontinuity is rigid such that no displacement takes place across it. The reflected, transmitted and scattered waves have been obtained by Fourier transform and Wiener–Hopf technique. The scattered waves propagate with the speeds of the waves in the solid and decay exponentially. Numerical computations for the amplitude of the scattered waves have been made versus the wave number. The amplitude falls off rapidly as the wave number increases very slowly. The amplitude ratio of the scattered waves has been plotted with an elastic constants ratio.
4. Optimal Scheduling Of Jobs on Machines in Series with a Transportation Agent
Author : Pradeep Kashyap
Keyword : Optimal scheduling, algorithm.

Volume:5,Issue:1,PP:33 - 43,Year:(2014)
In the present paper, an attempt has been made to provide optimal scheduling for a scheduling problem with two machines arranged in series. Also there is a transport agent which carries the item processed on first machine to second machine and return back (empty) to first machine to carry next job after processing. An algorithm is proposed to obtain the optimal solution. Numerical illustration has been given to strengthen the results.
5. Heat and Mass Transfer in MHD Free Convective Flow of a Visco-Elastic (Walter’s Model-B) Dusty Fluid through a Porous Medium
Author : Santosh Kumar Srivastava and R. K. Khare
Keyword : Heat and mass transfer, MHD, porous medium, visco-elastic, dusty fluid.

Volume:5,Issue:1 ,PP:44-50 ,Year:(2014)
In the present paper is concerned with heat and mass transfer in MHD free convective flow of a viscoelastic (Walter’s Model-B) dusty fluid through a porous medium induced by the motion of a semi infinite flat plate moving with velocity decreasing exponentially with time. The expressions for velocity distribution of the dusty fluid, dust particles, temperature and concentration distribution are obtained. The effect of various parameters on velocity distribution of dusty fluid and dust particles, temperature and concentration are discussed numerically and graphically.
6. Interrelationship between managing arrival pattern and service pattern in queues
Author : Divya Bakshi & Manju Sharma
Keyword : N Policy, F-policy.

Volume:5,Issue:1,PP: 51-63,Year:(2014)
In the present paper is concerned with Queues can be managed in one of two ways i.e. by controlling the arrival or by chequing the service pattern. This can be done by either controlling the number of customers in the system or by accumulating work while the server is assigned to alternative jobs. The purpose of this paper is to derive the probability distribution of these systems and establish relationship between them. In this paper the relationship between the F-policy problem and the truncated N-policy is considered. The F-policy problem deals with the issue of controlling arrivals to a queueing system. The N-policy involves a queueing system in which the server leaves the system when it becomes empty and returns when the queue builds up to a predetermined level. The steady state probability distribution and expressions for the measure of effectiveness for these two systems are obtained. The complementarily relationships between these two queueing system are established. These relationships provide insight into these queueing problems and facilitate the solution to any one of the problems given the solution of the other.
7. Study of Availability and MTTF Evolution of A Complex System Incorporating the Concept of Waiting, Common Cause and Human Error
Author : Kavita Soni and U. R. Singh
Keyword : Availability and MTTF, Complex System, Common Cause and Human Error.

In this paper a complex system consisting of n-non identical units connected in series. The complex system is subjected to minor failure, major failure, critical human failure and common cause failure which bring the system to reduced efficiency states. Failures follow exponential time distribution, whereas repair follows general time distribution. Using supplementary variable technique, Laplace transforms of the probabilities of the system being in various states are evaluated, which on inversion gives time dependent availability. In addition, steady state behaviour and MTTF have been obtained. Also, numerical illustrations with various graphs have been given.
8. Thermal Radiation Effects on Dusty Viscous Fluid through Porous Medium over a Moving Infinite Vertical Plate in presence of magnetic field
Author : P. K. Agarwal & Yogendra Kumar Dwivedi
Keyword : Impulsively started vertical plate, Radiation, Heat flux, Porous medium, MHD

The effects of thermal radiation and mass transfer on MHD free convection flow of viscous fluid through porous medium over an impulsively started infinite vertical plate with uniform heat flux in the presence of thermal radiation is studied here. Mass transfer and radiation effects are taken into account and the dimensionless governing equation are solved using the finite difference technique. The numerical results are presented graphically for different values of the parameters entering into the problem on the velocity profiles of fluid and particles of dust, temperature and concentration profile and skin friction.
9. Mathematical Analysis of Blood Flow in an Artery through a Nonsymmetrical Stenosis
Author : Asendra Rohela & J. S. Chaudhary
Keyword : Unsteady blood flow, Newtonian fluid, Nonsymmetrical stenosis

The aim of present investigation is to study of unsteady blood flow in an artery through a nonsymmetrical stenosis. The dimensionless resistance to flow, the wall shear stress has been obtained in this analysis. The numerical solution of dimensionless resistance to flow, the wall shear stress are shown graphically for better understanding of the problem.
10. Unsteady Laminar Free Convective Flow of Dusty Viscous Fluid through Porous Medium along a Moving Porous Vertical Plate
Author : Diwari Lal
Keyword : Unsteady, MHD, Porous medium, Thermal diffusion, chemical reaction

Volume: 5,Issue:1,PP: 89-98,Year:(2014)
The purpose of the present problem is to study the effect of a chemical reaction on unsteady laminar free convection flow of dusty viscous fluid through porous medium along a moving porous hot vertical plate in the presence of heat source and thermal diffusion with mass transfer, taking into account the homogeneous chemical reaction of first order. The governing equations of motion are solved by finite difference technique. The numerical results are presented graphically for different values of the parameters entering into the problem on the velocity profiles of dusty fluid, dust particles, temperature, concentration profile and skin friction profile.
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