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International Journal of Research and Reviews in Applied Sciences
ISSN: 2076-734X, EISSN: 2076-7366
Volume 16, Issue 3(September, 2013)
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1. |
THE COUPLED EINSTEIN-EULER SYSTEM WITH THE COSMOLOGICAL CONSTANT |
by Raoul Domingo Ayissi |
Abstract |
We prove the global existence
of solutions to the coupled Einstein-Euler system.
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International Journal of Research and Reviews in Applied Sciences
September 2013 -- Vol. 16 Issue 3 -- 2013 |
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2. |
THE COMBINED FORECASTING MODEL OF GRAY MODEL BASED ON LINEAR TIME-VARIANT AND ARIMA MODEL |
by Xia Long, Yong Wei, Jie Li & Zhao Long
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Abstract |
As to the established gray
model based on the linear time-variant and individual prediction model of ARIMA,
this article constructs the combined forecasting model based on the gray model and
the time series model by means of relative error weighing. This prediction indicates
that both the gray model and ARIMA model exert efficient function on the Torpedo
development cost prediction, and the combination forecast model improve the precision
of prediction.
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International Journal of Research and Reviews in Applied Sciences
September 2013 -- Vol. 16 Issue 3 -- 2013 |
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3. |
A COMPARISON OF COHEN'SKAPPA AND AGREEMENT COEFFICIENTS BY CORRADO GINI |
by Matthijs J. Warrens |
Abstract |
The paper compares four coefficients that can be used to summarize inter-rater agreement
on a nominal scale. The coefficients are Cohen's kappa and three coefficients that
were originally proposed by the Italian statistician CorradoGini. All four coefficients
have zero value if the two nominal variables are statistically independent, and
value unity if there is perfect agreement. The coefficients are compared both analytically
and empirically. An ordering between the four coefficients is formally proved. It
turns out that Cohen's kappa is a lower bound of the other coefficients.
Moreover, it is shown that the point estimates of Cohen's kappa and the two smallest of Gini's
coefficients are very similar for real data. We conclude that these three coefficients
lead to the same conclusions about the degree of inter-rater agreement in practice.
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International Journal of Research and Reviews in Applied Sciences
September 2013 -- Vol. 16 Issue 3 -- 2013 |
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4. |
EXACT SOLUTIONS FOR THE BBM EQUATION AND KP-BBM EQUATION BY AN SUB-ODE METHOD |
by Shixiang Zhou & Qinghua Feng |
Abstract |
In this paper,
we propose a generalized
sub-ODE method for seeking exact solutions of nonlinear evolution
equations. This method
is based on the homogeneous balance principle, and is simple for computation.
As applications, we test the validity of the method by applying it to solve the
BBM equation and the KP-BBM equation. with the aid of mathematical software
Maple, some new
exact travelling wave solutions for the two equations
are established.
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International Journal of Research and Reviews in Applied Sciences
September 2013 -- Vol. 16 Issue 3 -- 2013 |
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5. |
SOME NEW TRAVELLING WAVE SOLUTIONS FOR THE COUPLED KDV EQUATION AND THE (2+1) DIMENSIONAL PKP EQUATION |
by Hongling Fan & Bin Zheng |
Abstract |
In this paper,
with the aid of the mathematical software Maple, we derive exact travelling wave
solutions of the coupled KDV equation
and the
(2+1) dimensional PKP equation by a proposed Riccati sub-ODE method. This method appears to
be efficient in seeking exact solutions of nonlinear equations.
As a result, some new
travelling wave solutions for the two equations are successfully found.
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International Journal of Research and Reviews in Applied Sciences
September 2013 -- Vol. 16 Issue 3 -- 2013 |
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6. |
AN INSIGHT INTO KINEMATIC INTERACTION OF PILE EMBEDDED IN DEEP LAYERED MARINE SEDIMENT UNDER SEISMIC EXCITATION |
by T.P. Peiris, D.P. Thambiratnam, N.J. Perera & C. Gallage |
Abstract |
Major
earthquakes that caused damage to buildings have brought a significant attention
to response of pile foundations under seismic excitation. However, seismic design
of pile foundations still remains challenging, when they are embedded in multilayered
soil profiles. Present study investigated the kinematic behaviour of pile embedded
in a multilayered soil profile which is typically found in marine regions, using
finite element method. First, modelling techniques were validated using existing
results and then adopted in further analysis. It was found that the layers of soils
with varying stiffness influence the pile response significantly and activate different
vibration modes in the pile.
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International Journal of Research and Reviews in Applied Sciences
September 2013 -- Vol. 16 Issue 3 -- 2013 |
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7. |
GEO VISUALIZATION OF DISEASE OUTBREAK USING GEOSPATIAL CROWD SOURCING WEB APPLICATION |
by Abdulwasiu Salawu, Mohd Shafie, Abdul Azeez Bello & Siew Chengxi Bernad |
Abstract |
In
the outbreak of infectious diseases in the immediate environment, a more rapid notifiable
and surveillance system is needed to track pandemics and make rapid decisions thereby
reducing the spread of communicable diseases. With systems like Google Earth, providing
marvellous geo visualization tools and a wider opportunity to explore complex
Geospatial crowd sourcing.
These system is now moving towards citizens science (citizens who act as observers),
thereby engaging the general public in the trend. Volunteered Geographic Information
(VGI) or Geospatial Crowd sourcing is a kind of phenomena whereby the users of the
web are generating the healthcare information for the geo web. The aim of this
study is to propose a framework based on existing geospatial mashups services to
create a crowd sourcing web application service to alert people in disease outbreak
situation, help and rescue people in that location. The methodology used in this
study makes it possible for the crowd to disseminate and share geospatial communicable
disease information by digitizing on the fly. This study presents the results of a geo
web application developed for citizens of Johor Bahru, west Malaysiain crowd sourcing for communicable disease
outbreak. The results of the prototype is promising and can be used
for future study in mobile geospatial crowd source applications.
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International Journal of Research and Reviews in Applied Sciences
September 2013 -- Vol. 16 Issue 3 -- 2013 |
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8. |
NUMERICAL MODELING ON ELECTRIC RESPONSE OF FIBRE-ORIENTATION OF COMPOSITES WITH PIEZOELECTRICITY |
by Cheuk-Yu Lee, Qing H. Qin and Guy Walpole |
Abstract |
A three point bending test is considered
for analysing the effect of fibre-orientation on electric response of fibre reinforced
composites attaché a piezoelectric sensor. The study involves finite element simulation
on a bended unidirectional carbon fibre reinforced plastic-piezoceramic composite
laminate. Specifically, finite element analysis is used in order to establish a
relationship between the fibre angle of the carbon-fibre and the electric response
of the piezoceramic, under 3 point bending. The validity of the FE results is compared
experimental observations.
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Source: |
International Journal of Research and Reviews in Applied Sciences
September 2013 -- Vol. 16 Issue 3 -- 2013 |
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9. |
A COMPARATIVE STUDY IN THE CONTENT OF AMINO ACIDS OF SHOOT AND ROOT OF MEDICAL HERBS OF XANTHIUM STRUMARIUM GROWING IN IRAQ |
by Ayad C. Al- Daody, Fathi A. Al-Mandeel & Fanar H.Y. Al-Hashimy |
Abstract |
Specimens of X. strumarium were collected from Mosul city for investigation
and separation of Glycine, Asparagine, Aspartic, Glutamic and Arginine as amino
acids by high-performance liquid chromatography (HPLC).
Separation process showed that the retention time of standard compounds was agreement
with molecular weights of those standard, so the compounds that have high molecular
weight took a longer retention time during the separation process compared to other.
In this study, the amino acid Glysine
observed in both crude extract of X.
stramarium, and also Asparagine and aspartic acid, while Glutamic acid was
absent from those crude extracts.
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International Journal of Research and Reviews in Applied Sciences
September 2013 -- Vol. 16 Issue 3 -- 2013 |
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10. |
MODELING A RANDOM YIELD IN- HOUSE PRODUCTION SET UP IN A NEWSVENDOR PROBLEM |
by Krishna Solanki & Ravi Gor |
Abstract |
In supply uncertainty
caused by random yield, the firm receives a random portion of an order placed with
a supplier. Yield uncertainty exists in many industries, including semiconductors,
electronic fabrication and assembly, food processing, bio-pharmaceuticals, and resource
based industries such a mining and agriculture. The existence of yield / supply
process uncertainty often results in lower supply chain performance. We consider
this issue in the context of a newsboy problem where before the selling season;
the firm makes joint pricing and inventory decisions. We consider the in-house production case in this model and derive analytical expressions therein.
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International Journal of Research and Reviews in Applied Sciences
September 2013 -- Vol. 16 Issue 3 -- 2013 |
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11. |
EXTRACTION, PURIFICATION OF CASHEW POLYSACCHARIDE AND CHARACTERIZATION BY GC-MS, FTIR, NMR, TG/DTG
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by Cheila Gonçalves Mothé & Jaqueline Souza de Freitas |
Abstract |
The cashew polysaccharide was
obtained from A. occidentale trees by
alcohol precipitation, purified in a Sephacryl S-400 HR chromatographic column,
and characterized by GC-MS, GPC, FTIR, NMR, and TG/DTG, for use in foods. The comparison of CG-MS results showed that the purified cashew polysaccharide had the same neutral
monosaccharides, but in different amounts. The GPC results showed that the purified
cashew polysaccharide had a low molecular mass and little polydispersivity. The
FTIR spectra showed bands characteristic of O-H, C-O-C, and C-O groups that are
present in the structure of polysaccharides. The 1H NMR spectra of the
samples were similar. Thermal analysis revealed a decomposition temperature around
of 240 ºC (Tonset) for both the samples; however, the purified
cashew polysaccharide had fewer residues at 800 °C.
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International Journal of Research and Reviews in Applied Sciences
September 2013 -- Vol. 16 Issue 3 -- 2013 |
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12. |
ASPHALT PRODUCTION FROM ASBUTON BY SONICATED EXTRACTION OF CARBONATE SOLIDS USING ACIDIC BRINE WATER SOLUTION |
by Mohammad Nasikin, Ivan Mery Devianto & Bambang Heru Susanto |
Abstract |
Natural asphalt from Buton
Island (asbuton) has not been fully utilized up to now. One way of its utilization
was extraction process to dissolve carbonate solids in asbuton using weak acid solution.
The solution was acidic brine water solution that made by CO2 injection
in NaCl solution. Sonicated extraction was performed at various operating conditions,
namely temperature (25 to 110oC), pressure (1 to 3 bar), NaCl concentration
(0.1 to 2 M), and flow rate of CO2 (0.2 to 1 L/min). All variables affect
the amount of dissolved carbonate solids. Maximum of dissolved solids reached at
temperature of 90oC, pressure of 3 bar, NaCl concentration of 0.5 M,
CO2 flow rate of 0.6 L/min, and ratio of 0.02 g/mL. Asphalt product contained
50.47% asphalt,
24.47% carbonate solids, and 25.06% other minerals.
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Source: |
International Journal of Research and Reviews in Applied Sciences
September 2013 -- Vol. 16 Issue 3 -- 2013 |
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13. |
NEW RESULTS ON DELAY-DEPENDENT STABILITY CRITERIA FOR NEUTRAL SYSTEMS WITH MIXED TIME-VARYING DELAYS AND NONLINEAR PERTURBATIONS |
by Issaraporn Khonchaiyaphum & Kanit Mukdasa |
Abstract |
In this paper,
the problem of delay-dependent stability criteria for neutral systems with mixed
time-varying delays and nonlinear perturbations is considered. Based
on the new
Lyapunov-Krasovskii functional, Leibniz-Newton formula, decomposition technique
of coefficient matrix, utilization of zero equations, model transformation and linear
matrix inequality, new delay-dependent stability criteria are established in terms
of linear matrix inequalities (LMIs). Numerical examples show that the proposed
criteria improve the existing results significantly with much less computational
effort.
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International Journal of Research and Reviews in Applied Sciences
September 2013 -- Vol. 16 Issue 3 -- 2013 |
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14. |
NOVEL HYDROCOLLOIDS : PREPARATION & APPLICATIONS – A REVIEW |
by Meenu Kapoor, Dhriti Khandal, Geetha Seshadri, Saroj Aggarwal & Rakesh Kumar Khandal |
Abstract |
Hydrocolloids, as the name suggests are the hydrophillic
materials with the structural attributes that are responsible for formation of colloidal
solutions. Generally, hydrocolloids are naturally occurring biopolymers. It does
not mean that one cannot design hydrocolloids by synthetic route. All types of hydrocolloids
are known from both renewable as well as non renewable resources. For various applications,
preference is being given to the renewable hydrocolloids due to one reason or the
other. Since the aim is to replace the existing conventional materials by the renewable
ones for various applications, one needs to modify the available hydrocolloids to
render certain unique features for the purpose. It is therefore necessary to create
novel hydrocolloids based on the existing ones. Two of the industrially important
natural hydrocolloids are starch and guar gum. In order to enhance their applicability
in the industries, their derivatization is carried out to get novel derivatives
with desired properties. The basic characteristics, various derivatives and the
applications of these two hydrocolloids have been discussed in detail in the present
paper.
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International Journal of Research and Reviews in Applied Sciences
September 2013 -- Vol. 16 Issue 3 -- 2013 |
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15. |
SICKLE CELL DISEASE (SCD) MANAGEMENT: A Theoretical Review |
by Edith Egbimhanlu Alagbe, Alfred Akpoveta Susu & Adedoyin Owolabi Dosunmu |
Abstract |
We present in
this study a theoretical review of Sickle Cell Disease (SCD), highlighting the history
of the disease and its pathophysiology. In addition, we also spotlight the reactions
involved in SCD, the kinetics and
mechanism of hemoglobin oxygenation and deoxygenation
in red blood cell (which is the bane for the change in cell geometry and membrane
elasticity in sickle cell patients). Since SCD is a blood disease manifested in
the polymerization and deformation of red blood cells, very small capillaries (≤
10µm) are more prone to occlusion since irreversibly sickled cells (ISC) cannot
pass through such vessels because of the loss in deformability. The mathematical
models reviewed predicted occurrences (pertaining to red blood cell deformation
and geometry) in the vessels to an appreciable accuracy but lacked the ability to
predict vasoocclusion in the vessels.
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International Journal of Research and Reviews in Applied Sciences
September 2013 -- Vol. 16 Issue 3 -- 2013 |
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16. |
RELIABILITY AND AVAILABILITY ANALYSIS OF A STANDBY REPAIRABLE SYSTEM WITH DEGRADATION FACILITY |
by M.A. El-Damcese & M.S. Shama |
Abstract |
This paper investigates reliability and availability of
a repairable system with degradation facility. Failure times and repair times of
failed units are assumed to be exponentially distributed. There are two types of
repair. The first is due to failed state, the second is due to degraded state. The
expressions of availability and reliability characteristics such as the system reliability
and the mean time to failure are derived. We used several cases to analyze graphically
the effect of various system parameters on the availability system, reliability
system and mean time to failure. We also investigated the sensitivity analysis for
the system reliability with changes in a specific value of the system parameters.
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International Journal of Research and Reviews in Applied Sciences
September 2013 -- Vol. 16 Issue 3 -- 2013 |
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17. |
OPTIMIZATION OF THE DESIGN OF STEEL PORTAL FRAME OF A COLD ROOM AT OJOO, IBADAN, OYO STATE, SOUTH-WEST NIGERIA |
by F.A.Olutoge, O.M. Okeyinka & P.O. Akintunde |
Abstract |
This study examined
the optimization of the design of steel portal frame for a cold room at Ojoo Ibadan
located in the South West of Nigeria, with a focus on the methods available for
such tasks. The objective was to find more economical solutions to the use of steel.
The study attempted to attain lighter steel sections in the design, thus leading
to cost economy using three methods of optimization, that is, the use of scale 2005
structural calculation ensemble, PADO software and Kaini Gasper method of iteration
with a view to selecting the most appropriate method.
Four variables
were selected for optimization in the portal frame and they were, the frame height,
frame span, purlin spacing and roof pitch after the cold room portal frame was designed according to BS 5950. For SCALE software, the plastic modulus was determined and
the moment at the hinge was fixed against each constraint. The objective optimum
problems were determined, objective function evolved for PADO software, and rotation
factor of the beam for the optimized design of the cold room using the iteration
method was determined and optimization was attained by generating constant rotation
factor for each variable with increase in loading on the frame.
The result of
various methods of optimized variables were compared at the end and it was recommended
that steel portal frames are economical in design and construction if optimized
preferably using software
like PADO.Cost estimate meant to analyze and compare the cost implications
of the initial and optimized design was also carried out at the end of the research
work and it was established that the initial design estimate is #2,709,500 (i.e.
$16934.375) and the optimized one is #2,327,000 (i.e. $14543.75) giving a reduction
of #302,500 ( i.e. $1890.625) which
is 14% of the initial design value. This showed that appreciable cost economy is
attained through the optimization process.
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International Journal of Research and Reviews in Applied Sciences
September 2013 -- Vol. 16 Issue 3 -- 2013 |
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