184 research outputs found
CLASSIFICATION MODEL FOR LEARNING DISABILITIES IN ELEMENTARY SCHOOL PUPILS
Learning disability is a general term that describes specific kinds of learning problems. Although, Learning Disability cannot be cured medically, there exist several methods for detecting learning disabilities in a child. Existing methods of classification of learning disabilities in children are binary classification – either a child is normal or learning disabled. The focus of this paper is to extend the binary classification to multi-label classification of learning disabilities. This paper formulated and simulated a classification model for learning disabilities in primary school pupils. Information containing the symptoms of learning disabilities in pupils were elicited by administering five hundred (500) questionnaire to teachers of Primary One to Four pupils in fifteen government owned elementary schools within Ife Central Local Government Area, Ile-Ife of Osun State. The classification model was formulated using Principal Component Analysis, rule based system and back propagation algorithm. The formulated model was simulated using Waikatto Environment for Knowledge Analysis (WEKA) version 3.7.2. The performance of the model was evaluated using precision and accuracy. The classification model of primary one, primary two, primary three and primary four yielded precision rate of 95%, 91.18%, 93.10% and 93.60% respectively while the accuracy results were 95.00%, 91.18%, 93.10% and 93.60% respectively. The results obtained showed that the developed model proved to be accurate and precise in classifying pupils with learning disabilities in primary schools. The model can be adopted for the management of pupils with learning disabilities.
 
Approximate Solution of Multipoint Boundary Value Problems
This study applies the Differential Transform Method (DIM) to obtain the approximate solution of
multipoint bmmdary value problems. Two examples are solved to illustrate the efficiency of the method.
Comparison with the solution obtained by Adomian Decomposition Method revealed that the DIM is an
excellent method for this type of problem
Application of Semi-Analytical Technique for Solving Thirteenth Order Boundary Value Problem
This work considers the numerical solution of
thirteenth order boundary value problems using the modified
Adomian decomposition method (MADM). Some examples are
considered to illustrate the efficiency of the method. It is
demonstrated that MADM converges more rapidly to the exact
solution than the existing methods in literature and it reduces
the computational involvemen
Central Nervous System Depressant Properties of Treculia africana Decne
The study was carried out to investigate the central nervous system activity of Treculia africana. The central nervous system depressant properties of Treculia africana were determined using: Novelty –Induced Rearing and Grooming, Locomotor activity, Ketamine-induced sleeping time and effect on rectal body temperature. The crude extract produced decrease in rearing, grooming and locomotor activity. It also potentiated ketamineinduced sleeping time and produced hypothermic effect in mice. The crude extract possessed sedative effect, which may be through increase in the activity of GABA in the brain
Irreversibility Analysis of a Radiative MHD Poiseuille Flow through Porous Medium with Slip Condition
In this article, irreversibility analysis of thermal
radiation with slip condition on MHD Poiseuille flow through
porous medium is investigated. The upper and lower walls are
kept constant with the same temperature. The radiative heat
flux in the energy equation is assumed to follow Roseland
approximation. Semi-analytical solutions of the non-linear
boundary value problems obtained from the governing
equations is constructed using Adomian decomposition method,
and the effects of some fluid parameters on fluid motion,
temperature, entropy generation and Bejan number are
presented
Hall Current and Joule Heating Effects on Flow of Couple Stress Fluid with Entropy Generation
In this work, an analytical study of the effects of Hall
current and Joule heating on the entropy generation rate of
couple stress fluid is performed. It is assumed that the applied
pressure gradient induces fluid motion. At constant velocity, hot
fluid is injected at the lower wall and sucked off at the upper
wall. The obtained equations governing the flow are transformed
to dimensionless form and the resulting nonlinear coupled
boundary value problems for velocity and temperature profiles
are solved by Adomian decomposition method. Analytical
expressions for fluid velocity and temperature are used to obtain
the entropy generation and the irreversibility ratio. The effects of
Hall current, Joule heating, suction/injection and magnetic field
parameters are presented and discussed through graphs. It is
found that Hall current enhances both primary and secondary
velocities and entropy generation. It is also interesting that Joule
heating raises fluid temperature and encourages entropy
production. On the other hand Hartman number inhibits fluid
motion while increase in suction/injection parameter leads to a
shift in flow symmetry
Hall current and suction/injection effects on the entropy generation of third grade fluid
In this work, effects of Hall current and suction/injection on a steady,
viscous, incompressible and electrically conducting third grade fluid past a
semi-infinite plate with entropy generation is investigated. It is assumed that
the fluid motion is induced by applied pressure gradient. Hot fluid is injected
with a constant velocity at the injection wall while it is sucked off at the
upper wall with the same velocity. The governing equations of Navier-Stoke,
energy and entropy generation obtained are non-dimensionalised, the
resulting dimensionless velocity and temperature profiles are solved by
Adomian decomposition technique due to the nonlinearity of the coupled
system of equations. The obtained solution for the velocity profile is
validated by the exact solution and the existing one in literature at M = 0 and
the analytical expressions for fluid velocity and temperature are utilized to
calculate the entropy generation and irreversibility ratio. Various plots are
presented and discussed. It is found that increasing Hall current parameter
increases primary velocity, temperature, entropy generation and Bejan
number while the reverse trend is observed when both suction/injection and
magnetic field parameters are increased. It is also noticed that entropy
production at the upper wall is due to heat transfer
Differential Transform Technique for Higher Order Boundary Value Problems
This paper presents the approximate solution of higher order boundary value problems by differential transform
method. Two examples are considered to illustrate the efficiency of this method. The results converge rapidly to
the exact solution and are shown in tables and graphs
Second Law Analysis of Ion Slip Effect on MHD Couple Stress Fluid
This paper is concerned with the numerical
investigation of entropy generation in viscous incompressible
MHD couple stress fluid in a rotating frame of reference. An
approximate solution of the dimensionless velocity and
temperature profiles are obtained and used to calculate the
entropy generation rate and Bejan number. The influences of the
governing parameters on velocity, temperature, entropy
generation and Bejan number are presented with the aid of
graphs
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