(Volume 03 - Issue 01 - Jan - May 2018)



Title:
Development of Fast Performance Evaluation Algorithm to Optimize the Efficiency of the Cooley-Turkey Fast Fourier Transform Algorithm for Dip
Authors:
Amannah || H.C. Inyiama
Source:
International Journal of Precious Engineering Research and Applications, Volume 3, Issue 1 (Jan- May) 2018), PP. 01-15
Abstract:
This research was designed to develop a performance evaluation algorithm to optimize the Cooley-Tukey FFT algorithm necessary for the processing of digital signals. The fast numerical algorithm developed in this study is abbreviated with improved C-TNADSP. The methodology adopted in this work was iterative and incremental development design. The major technologies used in this work are the numerical algorithms and the c++ programming technologies and the wave concept technology. The c++ served as a signal processing language simulator (SPLS). In the Improved Cooley-Tuley FFT algorithm, the DSP input is encountered first. It is subjected to some numerical processing which included testing for efficiency on the C++ platform. This test platform provided the basis for comparison leading to the desired Fast Numerical Algorithms for Digital Signal Processing.The improved C-TNADSPwas well investigated and compared across warehouse inputs sufficient enough to generate the required output sequence. The computing speed of the default algorithm was tested on the C++platform...............
Keywords:
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Title:
Partial replacement of sand by granite powder in concrete
Authors:
Narmatha.M || Vishali.G || Noveena.S || Uthra Megala.R
Source:
International Journal of Precious Engineering Research and Applications, Volume 3, Issue 1 (Jan- May) 2018), PP. 16-20
Abstract:
The main objective of Waste Management System is to maximize economic benefits and at the same time to protect the environment. Granite process industry generates a large amount of wastes mainly in the form of powder during sawing and polishing processes, which pollute and damage the environment. This work aims to characterize and evaluate the possibilities of using the granite sawing wastes, generated by the process industries from Salem District, as alternative raw materials in the production of concrete. This granite powder waste can be utilized for the preparation of concrete as partial replacement of sand. In order to explore the possibility of utilizing the granite powder as partial replacement to sand, an experimental investigation has been carried out. The percentages of granite powder added to replace sand by weight were 0, 5, 10, 15, 20 and 25. This attempt has been done due to the exorbitant hike in the price of fine aggregate and its limited availability.
Keywords:
Granite powder- replacement of sand- environmental protection- economical.
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Title:
Development of A Robotic Pick-Up Material Handling Arm
Authors:
Ejiko, S. O. || Aluko, F. I. || Oladimeji, E. A.
Source:
International Journal of Precious Engineering Research and Applications, Volume 3, Issue 1 (Jan- May) 2018), PP. 21-36
Abstract:
The demand for effective mobility that minimizes or eliminates human exposure to hazardous and toxic materials requires the development of a robotic arm. The robotic arm was designed base on an assumption of a maximum carrying capacity of 10kg and an arm length of 0.7m. The motors specification were 3hp stepper motor to drive the base, 736Watt permanent magnet motor to power the actuator and 1Hp for hybrid synchronous motor to drive the gripper. The developed robotic arm has a carrying capacity of 8kg, and could move its materials to a maximum height of 0.9m with an orientation of 180o. The robotic arm has an efficiency of 80%.
Keywords:
actuator, capacity, degree of freedom, material handling, robotic arm
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Title:
Formation of Complete Bipartite Graphs Using Quaternary Complex Hadamard Matrices
Authors:
W. V. Nishadi || K. D. E. Dhananjaya || A. A. I. Perera || P. Gunathilake
Source:
International Journal of Precious Engineering Research and Applications, Volume 3, Issue 1 (Jan- May) 2018), PP. 37-40
Abstract:
A graph G is a complete bipartite graph if its set of vertices could be decomposed into two disjoint sets such that every vertex in first set is joint to all the vertices in second set. In this paper, we proposed an algorithm which can be used to construct complete bipartite graphs using quaternary complex Hadamard matrices. The simplest quaternary complex Hadamard matrix of order 2 is used to obtain those complete bipartite graphs m m K , where n m  2 ; n  ℤ +. This algorithm was tested manually for m  2 , 4 , 8 . Further, higher order complete bipartite graphs were tested using Java program.
Keywords:
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Title:
Analysis of Direct Current Resistive Circuit by Thevenin Method for Electric Circuit Subject
Authors:
Ishak Annuar || Mazlina Mansor Hassan || Ahmad Nurrizal Muhammad || Bibi Sarpinah Sheikh Naimullah || Noor Azland Jainudin || Dzufi Iszura Ispawi
Source:
International Journal of Precious Engineering Research and Applications, Volume 3, Issue 1 (Jan- May) 2018), PP. 41-45
Abstract:
The paper presents a comparison between the calculated and measured direct current (DC) resistive circuit using Thevenin method at different DC voltages. A DC voltage (5, 11, and 16 V), breadboard, three resistors (1.11kΩ),wire, and multimeter (PM3) are used for DC power supply, constructed circuit, resistance, jumper wire, and measure voltage and resistance, respectively. The calculatedand measured of Thevenin voltage at different DC voltages increased as DC voltage increased from 4.54 V to 14.54 V, and 4.48 to 14.44 V, respectively. Meanwhile, the measured of Thevenin resistance did not give significant change with the calculated value. The result showed Thevenin voltage increased as the DC voltage increased. The
measuredThevenin voltage and resistance are consistent with the theoretical calculated measurement.
Keywords:
Thevenin method,resistive circuits, DC circuit, Thevenin resistance, Thevenin voltage.
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Title:
Investigation of Surface Hardening of Medium Carbon Steel Using Snail and Melon Shells
Authors:
Sebastineaondover Bam || J. N. Akaaza
Source:
International Journal of Precious Engineering Research and Applications, Volume 3, Issue 1 (Jan- May) 2018), PP. 46-48
Abstract:
Investigation of surface hardening of medium carbon steel using snail and melon shells has been critically examined using charcoal as base enhancer. The samples were proportionally mixed in percentages of 5, 10, 15, 20 and 25 % snail and melon shells with charcoal taking the rest as base enhancer. The samples were then carburized at a temperature of 950 °C and allowed to cool to room temperature for 8 hours for diffusion to completely take place. The un-carburized and carburized samples were then subjected to Vickers hardness test with the variation into the core from the outer surface from .2 to 1.6 mm. The results for the un-carburized samples were 313 -302 Hv. For the carburized ones the hardness values were in the range of 561-971 respectively. For samples B, D and F the gradients at 0.2 mm were 767, 841 and 971 Hv respectively. The
results indicates that snail and melon shells can be used for surface hardening of medium carbon steel.
Keywords:
Carbon steel, Charcoal, Diffusion, Energizers, Melon shell, Snail shell, Surface hardening.
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Title:
The Influence Of History And Cultural Life Towards People's Mindset, In Relation To The Spatial Systemsof Tenganan Pagringsingan, Karangasem - Bali
Authors:
I Wayan Runa || I Nyoman Warnata
Source:
International Journal of Precious Engineering Research and Applications, Volume 3, Issue 1 (Jan- May) 2018), PP. 49-63
Abstract:
The aims of this research are to analyze the role of history and cultural life of Tenganan in establishing the village‟s spatial systems, and to describe the conceptual formula behind the village existence. From the qualitative (descriptive) analysis about the history and cultural life of the Tengananese people, the researcher drew several conclusions. People‟s history and cultural life influence their mindset, especially on natural harmony, in order to reach physical and spiritual prosperity, both in mortal life and afterlife. Essentially, history and cultural life are experiences and value systems that greatly influence the character development of every society. Their mindset directs their attitude towards life. Then, their attitude towards life is related to their behavior, which then creates the norms of life. Their attitude towards life determines their attitude towards
space, their behavior determines their spatial behavior, and their norms determine the spatial norms. People‟s mindset is evident in the structure, functions, and meanings of Tenganan‟s spatial systems through 3 gradations of spatial scale: macro (the areas/living environment), meso (the blocks/neighborhood), and micro (the houses). Tenganan is an extensive, rich, and safe village. The centralized and linear village blocks (built up area) are well-organized, with open space and public space in the middle. The people‟s houses are relatively small and facing each other (jaga satru) with consistent structure and spatial values.
Keywords:
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Title:
Evaluating The Mineral Composition Of Four Varieties Of African Yam Bean At Afikpo Region Of Ebonyi State In Nigeria
Authors:
Peter Anyigor Okorie
Source:
International Journal of Precious Engineering Research and Applications, Volume 3, Issue 1 (Jan- May) 2018), PP. 64-66
Abstract:
The mineral composition of white, brown, spotted and black coat coloured African yam bean varieties that are being cultivated in the Afikpo town of Ebonyi State in Nigeria was determined in this study. The iron, calcium, magnesium and zinc contents were determined using the Atomic Absorption Spectrophotometer. The results showed that there were no significant differences in the composition of zinc and magnesium in the four varieties of African yam bean examined. The black coat colour had the highest value of magnesium with 8.280 mg/l, while the white variety had the least value of 7.470 mg/l. There was no significant difference in the iron content of the mean value of the white variety, brown and spotted variety, but there was significant difference when compared to the black variety that has the least iron content of 0.140 mg/l among the four varieties. The white coat coloured variety has the highest calcium content among the four varieties studied. The findings suggest that the white yam bean variety is a better source of food for infants during the weaning period due to the high calcium content.
Keywords:
Minerals composition, African yam bean, Afikpo-indigenous yam bean, Yam bean analysis
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Title:
Psychosocial Factors And Their Relation Between Work Accidents Among Outsourced Construction Workers
Authors:
Roberta Zaninelli Do Nascimento Zarpelão || Milva Maria Figueiredo De Martino || Isabel Cristina Kowal Olm Cunha || Cláudia Maria Sodré Vieira
Source:
International Journal of Precious Engineering Research and Applications, Volume 3, Issue 1 (Jan- May) 2018), PP.70-74
Abstract:
Introduction: Accidents suffered by outsourced construction workers may be due to some factors that change the psychosocial environment. Objective: To analyze and compare the control demand between healthy and injured workers. Method: Exploratory and cross-sectional study with a quantitative approach between two groups of 29 workers each (healthy and injured) of a petrochemical company in the region of Cubatão, São Paulo. The reduced version of the instrument "Job Strain Model" was used. Results: In the 58 interviewed workers, the low demand and tact control prevailed among the injured and healthy workers. Only 12% of the healthy individuals showed active work; among the injured ones, this percentage was 34.48%; the vast majority of healthy people have passive work (87.93%) as well as slightly more than half (65.71%) of the injured ones..............
Keywords:
Psychosocial Aspects; Civil Construction, Occupational Health.
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Title:
Analysis Of Physiochemical And Phytochemical Properties Of Abakaliki-Indigenous Nigerian Melon (Isekele) Seed Flour
Authors:
Peter Anyigor Okorie
Source:
International Journal of Precious Engineering Research and Applications, Volume 3, Issue 1 (Jan- May) 2018), PP.72-76
Abstract:
The physiochemical and phytochemical properties of Abakaliki-indigenous Nigeria isekele melon seed flour was determind in this study. Foaming capacity, emulsion capacity, oil absorption, water absorption, and bulk density tests were conducted. The moisture, protein, fat, fibre, ash, carbohydrate, flavonoid, saponin, carotenoid and alkaloid contents of the flour were determined. The results indicate that the functional properties of the flour are: foaming capacity 0.07 %, emulsion capacity 70.50 %, oil absorption capacity 32.50 %, water absorption capacity 30.90 % and bulk density 1.29 g/ml. The proximate composition of the flour are: carbohydrate 56.25 %, protein 34.13 %, moisture 2.70 %, fat 26.00 %, crude fibre 5.55 % and ash 2.15 %. The flour has the following phytochemical composition: flavonoid 2.90 %, saponin 6.10 %, carotenoid 0.85 % and
alkaloid 2.90 %. The analysis revealed that the flour could be used in soup making and infant food formulation. It could also be useful for prevention and cure of heart related diseases.
Keywords:
Physiochemical analysis, Phytochemical properties, Melon seed flour, Abakaliki-indigenous melon
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