Academic Research Publishing Agency Press
International Journal of Research and Reviews in Applied Sciences
ISSN: 2076-734X, EISSN: 2076-7366

Volume 25, Issue 1(October, 2015)

To read and print the PDF files of the Journal Archive you will need to have Acrobat Reader 
 If you have any technical or content problems contact : publisher@arpapress.com

1. COMPARISON COUNT REGRESSION MODELS FOR OVERDISPERSED ALGA DATA
by Esin Avci Sibel Alturk & Elif Neyran Soylu
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.

Source: International Journal of Research and Reviews in Applied Sciences
October 2015-- Vol. 25 Issue 1-- 2015

2. MECHANICAL AND MICROSTUCTURAL ANALYSIS OF DISSIMILAR METAL WELDS

by Farzeen Shahid, Abid Ali Khan & M.Saqib Hameed

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.

Source: International Journal of Research and Reviews in Applied Sciences 
October 2015-- Vol. 25 Issue 1-- 2015

3. NEW INFORMATION TECHNOLOGY IMPACTS ON TRAVEL INDUSTRY
by Der-Ren Hsu
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.

Source: International Journal of Research and Reviews in Applied Sciences
October 2015-- Vol. 25 Issue 1-- 2015

4. KINETIC STUDY OF THERMAL DECOMPOSITION OF BASE BLEED PROPELLANTS FOLLOWING FRIEDMAN AND OZAWA-FLYNN-WALL METHODS

by Priscila Simões Teixeira Amaral Paula, Michelle Gonçalves Mothé & Cheila Gonçalves Mothé/span>

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.

Source: International Journal of Research and Reviews in Applied Sciences 
October 2015-- Vol. 25 Issue 1-- 2015

5. GEOMETRICAL OPTICS AND THE RADIATIVE TRANSFER EQUATION IN A VARYING REFRACTIVE INDEX MEDIA
by Okwoyo M. James & George Mocheche
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.

Source: International Journal of Research and Reviews in Applied Sciences
October 2015-- Vol. 25 Issue 1-- 2015













Academic Research Publishing Agency Press