International Journal of Technology

S. Kumar ¹

Affiliations
1 Department of Mechanical Engineering, Raipur Institute of Technology, Raipur, Chhattisgarh – 492101, IN

Abstract

Several research works have been reported for calculating terminal velocity of spherical particles. However, work is still limited on non spherical and irregular particles. In the present work, an attempt has been made for predicting the terminal velocity of irregular shaped particles using the proposed correlation. Further, the effects of variation of density, effect of variation of particle sieve diameter and variation of particle's Reynolds number on the particle terminal velocity have been presented for actual and the simulated values. It is observed that the curve is behaving in same manner for the actual and simulated terminal velocities.

Keywords

Terminal Velocity, Irregular Particle, Density, Particle Diameter.

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P. L. Sharma ¹, S. Kumar ¹

Affiliations
1 Department of Mathematics, Himachal Pradesh University, Summer Hill, Shimla - 171005, IN

Abstract

Hadamard matrices have received much attention in the recent past, owing to their well-known and promising applications. Various researchers have used Hadamard matrices to find their applications in image analysis, signal processing, coding theory, cryptology and combinatorial designs. Now, Hadamard rhotrices have been introduced in the literature for the above said applications. Balanced incomplete block design has its wide use in design of experiments in statistics and error-correcting codes. Design of experiments has broad applications across all the natural and social sciences, and engineering. Here, in the present paper, we develop balanced incomplete block design (BIBD) using Hadamard rhotrices.

Keywords

Hadamard Matrix, Hadamard Rhotrix, Incidence Matrix, Balanced Incomplete Block Design.

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S. Kumar ¹

Affiliations
1 Department of Mechanical Engineering, Raipur Institute of Technology, Raipur, IN

Abstract

Assessment of soil quality from Tatibandh area of Raipur district, Chhattisgarh has been studied. Physical and chemical characteristics were considered for assessment of soil quality in the month of January - February, 2010 for present study. Physical characteristics showed maximum water holding capacity 76.81%, porosity 61.13%, expansion in volume 18.53%, apparent specific gravity 1.14 gm/cc, absolute specific gravity 1.92 gm/cc, chemical analysis revealed soil pH 8.3, electrical conductivity 0.80 ds/m, organic carbon 1.48%, available phosphorus 6.50 kg/ha, available potassium 1169.28 kg/ha.

Keywords

Physico-Chemical Characteristics, Soil Fertility.

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S. Kumar ¹, B. Mukherjee ¹

Affiliations
1 Department of Applied Mathematics, Indian School of Mines, Dhanbad-826004, IN

Abstract

This paper is Fuzzy mixture inventory model involving fuzzy lead time demand and fuzzy total demand. The model is inventory model system, Expected annual total cost in crisp sense calculated but lead time crashing cost, holding cost, stock out cost, setup cost is assume as fuzzy random variable and total expected annual cost in fuzzy sense also calculated. Expected annual total cost is represented by Trapezoidal fuzzy number. We have used the Graded mean integration of defuzzification. Numerical example has been shown to compare the both result in crisp and fuzzy sense.

Keywords

Lead Time Crashing Cost, Demand, Trapezoidal Fuzzy Number, Expectated Annual Total Cost.

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