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International Journal of Research and Reviews in Applied Sciences
ISSN: 2076-734X, EISSN: 2076-7366
Volume 25, Issue 1(October, 2015)
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1. |
COMPARISON COUNT REGRESSION MODELS FOR OVERDISPERSED ALGA DATA |
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by Esin Avci Sibel Alturk & Elif Neyran Soylu |
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Abstract |
Count
data become widely available in many diciplines. The most popular distribution for
modeling count data is the Poisson distribution which assume equidispersion (Variance
is equal to the mean). Since observed count data often exhibit over or under dispersion,
Poisson models become less ideal for modeling. To deal with a wide range of dispersion
levels, Quasi Poisson regresion, Negative Binomial regression and lately Conway-Maxwell-Poisson
(COM-Poisson) regression used as an alternative regression models. We compare the
COM-Poisson to all other regression models and illustrate its advantage and usefulness
using over-dispersed alga data.
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Source: |
International Journal of Research and Reviews in Applied Sciences
October 2015-- Vol. 25 Issue 1-- 2015 |
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2. |
MECHANICAL AND MICROSTUCTURAL ANALYSIS OF DISSIMILAR METAL WELDS |
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by Farzeen Shahid, Abid Ali Khan & M.Saqib Hameed
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Abstract |
Welding process can be performed on similar or dissimilar
metals. Welding of dissimilar metals involves different types of metals with distinct
chemical composition. The two dissimilar metals involve in welding process have
different mechanical properties and microstructures which in turn may affect welding
parameters like weld current, hold time, weld force etc. When a structure or component
of a machine is build or undergo any repair procedure this change in chemical composition
of metals get prominent. The difference in chemical composition of metals may be
due to several factors such as age hardening, oxidation etc.The study of mechanical
properties of welding is important because welded structure may be installed at
highly sensitive and risky place. Problem of formation of inter-mettalic compound
may arise which affect the weld quality. In this paper a brief review has been given
on the work done on mechanical characterization, microstructure properties of welded
joints.
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Source: |
International Journal of Research and Reviews in Applied Sciences
October 2015-- Vol. 25 Issue 1-- 2015 |
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3. |
NEW INFORMATION TECHNOLOGY IMPACTS ON TRAVEL INDUSTRY |
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by Der-Ren Hsu |
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Abstract |
New information technology(IT) has already triggered a great impact on the modern
travel industry, such as Uber. The company develops, markets and operates the Uber
mobile app, which
allows consumers with
smartphones to submit a trip request which is then routed to
Uber drivers who use their own cars. The purpose of this study is to research that
what professional managers are thinking and reacting while
facing the rising development of new technology, for example Mobile Apps?
In conclusion, this world is changing all the time that all we need to do is adapted
into the new environmemt. This study will provide suggestions those who are interested
in travel business who may use the results of this study as guidelines as travel
agents prepare themselves for the impact of new technology in travel business marketing.
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Source: |
International Journal of Research and Reviews in Applied Sciences
October 2015-- Vol. 25 Issue 1-- 2015 |
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4. |
KINETIC STUDY OF THERMAL DECOMPOSITION OF BASE BLEED PROPELLANTS FOLLOWING FRIEDMAN AND OZAWA-FLYNN-WALL METHODS |
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by Priscila Simões Teixeira Amaral Paula, Michelle Gonçalves Mothé & Cheila Gonçalves Mothé/span>
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Abstract |
Explosives, propellants and pyrotechnics are the common classifications given to
energetic materials. They can react rapidly with an ignition and releases large
amounts of energy with products generated in high velocity. Explosives are
very susceptible to initiation and as well as the pyrotechnics. Propellants usually need
an ignition system to burn and they have all the oxygen necessary for the combustion.
Thermal analysis had been used in energetic materials studies. This work reports
the thermoanalytical results for commercial and synthesized base
bleed propellants from TG/DTG and DTA curves as well as the kinetic parameters
of the decomposition reaction by applying isoconversional methods as Friedman and
Ozawa–Flynn–Wall using the Thermokinetics software.
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Source: |
International Journal of Research and Reviews in Applied Sciences
October 2015-- Vol. 25 Issue 1-- 2015 |
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5. |
GEOMETRICAL OPTICS AND THE RADIATIVE TRANSFER EQUATION IN A VARYING REFRACTIVE INDEX MEDIA |
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by Okwoyo M. James & George Mocheche |
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Abstract |
This paper is shows that the given Radiative transfer equation perfectly works in
the non-absorbing / non-scattering limit, what was contested by
L. Martí-López [Opt. Commun. 266, 44 (2006)]. The assumption
that this equation would imply a zero divergence of the rays is explored.
Radiative transfer in a medium with a spatially varying refractive index was recently
at the origin of a lot of activity.
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Source: |
International Journal of Research and Reviews in Applied Sciences
October 2015-- Vol. 25 Issue 1-- 2015 |
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