iosr-Jm   Volume-17 ~ Issue-3 ~ May – June 2021

Abstract: This theoretical analysis investigates the unsteady convective flow of nanofluid using Blasius-Rayleigh-Stokes variable with slip effect. The non-Newtonian fluid problem is examined mathematically via a system of governing partial differential equations to determine the effect of moving slot parameter, thermal Grashof number and mass Grashof number on the flow. A suitable similarity variable is employed to transform these equations into the corresponding ordinary differential equations and then solved using the method of Newton's Finite differences adopted from MAPLE 18.0 software. From the graphical representations derived, an overview of the effects of some physical parameters on the velocity, temperature and the concentration profiles is then presented.

Keywords – Blasius-Rayleigh-Stokes variable, moving slot, thermal Grashof number, slip velocity, mass Grashof number..

[1]. Pop, I., Ingham, D.B.: (2001) convective heat transfer: Mathematical and computational modeling of viscous fluids and Porous media pergamon. Oxford.
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[3]. Sobamowo, M.G., Akinshilo, A.T., Yinusa, A.A.: (2018) Thermo-Magneto-Solutal squeezing flow of nanofluid between two Parallel disk embedded in a porous medium: Effects of nanoparticule geometry, slip and temperature jump conditions. Modelling and Simulation in Engineering, Volume 2018, Articule ID 7364634, 18 pages https://doi.org/10.1155/2018/7364634
[4]. Sravan Kumar, T and Rushi Kumar, B.: (2019) Effect of homogeneous-heterogeneous reactions in MHD stagnation point nanofluid flow toward a cylinder with nonuniform heat source or sink. Applied Mathematics and Computing, Trends in Mathematics, https://doi.org/10.1007/978-3-030-01123-9_29

Abstract: We currently have a variety of price indexes, the most popular of which are the Paasche's price index, the Laspeyres' price index and the Fisher's price index. But there is no such price index yet that satisfies all the four tests of adequacy. The most successful price index of all time is Fisher's ideal price index, which satisfies three of the four tests of adequacy —unit test, factor reversal test, and time reversal test. But it fails to complete circular test. We present a new price index which will be called real price index. This price index satisfies all the four tests of adequacy - unit test, factor reversal test, time reversal test and Circular test. Real price index is a generalized measure......

Keywords: Real Price Index, Perfect Price Index, Fisher's Price Index, Geometric and Summative Parts of Real Price Index, Proportional cum Exponential Weighting Method, Commodities, Adequacy Tests.

[1]. Dr. V. K. Nigam, Dr. Ankita Gupta, Dr. Anamika Chaudhary, Dr. Monika Malhotra, Dr. S. V. Rawat, Pro. A. P. Sen ( Hindi Editition April 2016), Quantative Methods, Directorate Study and Publications, Uttarakhand Open University, Haldwani, Nainital, Uttarakhand, India
[2]. Dr.V. C. Sinha, Dr. B. N. Gupta (Revised Hindi Editition 2012) Economics, S.B. P.D. Publications, 3/20B, Agra-Mathura Bypass Road, Near Tulsi Cinema, Agra, Uttar Pradesh, India

Abstract: The demand for observation and forecast of wind shear and other troubling weather phenomena in the aviation industry has been on the increase in this period of climate change and its associated impacts. Nigeria and other countries in the tropical region greatly experience wind shear, hence the need for accurate wind shear forecast. The study mathematically modeled the relationship between wind shear and flight diversions, delays and cancellations at Murtala Mohammed and Port Harcourt International Airports, Nigeria. The annual time series secondary data used for this study were sourced from Nigerian Airspace Management Agency (NAMA) at Murtala Mohammed and Port Harcourt International Airports and Nigerian Meteorological Agency (NIMET). The data were compiled and presented in tables for easy understanding and further analysis. The statistical estimation (or analysis) techniques employed in......

Keywords: Wind Shear; Mathematical Modeling; Aircraft Operations; Relationship; Aviation Industry

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