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Volume 4 Issue 12 (December 2017)

S.No. Title & Authors Page No View
1

Title : Experimental Investigation of the Effect of Partial Replacement of Cement with Eggshell Ash on the Rheological Properties of Concrete

Authors : Afolayan J. O.

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Abstract :

This research presents the experimental results of the effect of eggshell ash as a partial replacement of cement in concrete. The properties of concrete investigated include the compressive strength, workability and the setting time. The cement in the concrete mix were partially replaced with egg ash at varying percentages which includes 0%, 5%, 10%, 15%, 20%, 25% and 30% using a mix ratio of 1:2:4 and a constant water cement ratio of 0.55. The specimen produced for the various percentages of eggshell ash were cured for 7, 14, 21 and 28 days before carrying out the compressive strength test. The average compressive strength at  28days of curing for   5%, 10%, 15%, 20%, 25% and 30% are 31N/mm2 , 30N/mm2, 27N/mm2, 24N/mm2, 19N/mm2 and 15N/mm2 respectively. The results shows that increase in the percentage of Egg shell ash leads to decrease in the compressive strength. However at 15% replacement the compressive strength is 27N/mm2, which satisfied the require strength for grade 25 concrete in BS 8110. 

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Title : Chemical composition and inhibitory effects of essential oils of two Rutaceae of Cote dIvoire: Clausena anisata and Citrus aurantifolia

Authors : K R. Oussou, C. Kanko, Kouassi A. Philomene, K. N. Guessennd, J. B. Boti

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Abstract :

The essential of the leaves of Clausena anisata and the zest of Citrus aurantifolia extracted by water vapour training were tested on hospital bacterial strains resistant to antibiotics of the beta lactam family and Fluoroquinolons. All MIC and MBC of essential oils are between 13.5 µg/mL and 486 µg/mL. Analysis of the chemical composition of these oils made by GC/MS, GC/IR and NMR –13C shows the essence of Clausena anisata is rich in germacren D (12.18%), b-caryphyllen (17.51%), (E + Z) b-ocimen (17,42%), and a-pinen (7.54%). That of Citrus aurantifolia is mainly composed of 79.5% of limonen. The indices of refraction of these essential oils are very low. 

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3

Title : Computer Aided Strategic Planning for the United Nations Sustainable Development Goals (SDGs)

Authors : Amjad Umar

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Abstract :

The role of digital innovations to support the United Nations Sustainable Development Goals (SDGs) has been widely recognized in major recent publications such as the Cisco-ITU report on IoTs and the Ericsson-Columbia study of ICT4SDGs. These and other studies have identified short range and long range challenges that must be addressed. This paper introduces a computer aided planning, engineering and management environment that has been developed to address these challenges for rapid progress in health, education, public safety, public welfare, and other vital areas. This environment, currently operational for a UN Partnership, consists of a set of intelligent advisors that collaborate with each other in a fashion similar to a team of consultants who guide the user through an extensive array of choices throughout the learn-plan-do-check cycle. The intelligent advisors quickly produce highly customized plans for SDG services for different countries by integrating diverse techniques such as semantic web, Big Data, deep learning, enterprise ontologies, business patterns, and gamification. This paper emphasizes the practical and innovative applications of computer aided strategic planning for SDGs and other global efforts in smart cities and next generation enterprises. Experiences and insights gained in development, deployment, maintenance and methodologies for actual use of computer aided planning systems are highlighted.  

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4

Title : Developed Method for Better Detection of Radionuclides in Plants by Gamma Spectrometry

Authors : Ahmed El-Sharkawy, Hanan Al-Ghamdi, Hekmat El-Begawy

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Abstract :

As a result of a previous fail in the International Atomic Energy Agency intercomparison (IAEA-TEL-2012-03) for the determination of the activity concentration of 137Cs in hay sample, the major source of error in determining the photopeak efficiency of the 661.6 keV gamma energy line of the 137Cs was due to the difficulties to reproduce the same matrix and elemental composition of the certified reference calibration materials as that of the hay sample. New approach was developed through the digestion of the ashed plant sample and delivers a clear small volume sample solution into the standard counting container for gamma measurements. The activity of the target radionuclide was determined by comparison with an acidified deionized solution spiked with known amounts of the typical radionuclide and 133Ba as a yield tracer in identical conditions. Method validation was established by analyzing replicates of the IAEA-TEL-2012 hay sample and the IAEA-372 grass sample for 137Cs.  The validation was established using several parameters; accuracy, precision and bias in order to ensure that it fits for the purpose. Trueness was evaluated in terms of relative bias, and no significant deviations from the true values due to samples densities and/or matrix-variation effect were found. The closeness of the determined 137Cs activities to the target values was evaluated in terms of accuracy, and was found to have an average of 0.98. The precision of the method is found to be fairly good, with uncertainties less than 7%. It can be concluded that the method is capable of providing high accuracy and precision measurements of 137Cs in plant samples. Also, it may be recommended that better detection limits for 226Ra and 228Ra activities in environmental plant samples can be achieved with this method using bulk plant samples.

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5

Title : Rates of Heat and Mass Transfers for a Non Darcy Porous Medium Subject to Double Dispersion and Saturated by a Nanofluid

Authors : Amina Manal Bouaziz

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This work aims to quantify the rates of heat and mass transfers occurred between a vertical and nonisothermal plate immersed into a non-Darcy porous medium and saturated with a weak nanofluid. Double dispersion is assumed and natural convection is the exchange mode. The similarity transformations are involved and the governing system of nonlinear partial differential equations is converted into a set of nonlinear ordinary differential equations via similarities. Results are displayed graphically to illustrate the influence of δ and ξ on the velocity, the temperature and concentration of the species profiles. For a weak nanofluid, the rate of mass transfer is affected strongly by the double dispersion while the rate of heat transfer coefficient is less sensitive to it.

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6

Title : DMAIC Methodology to Solder Paste Printing Process in Printed Circuit Boards

Authors : Beyza Nur Sezgin, Sergio Dinis Teixeira de Sousa, Eusebio Manuel Pinto Nunes, Kemal Alaykıran

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Abstract :

Nowadays, production of defective items is a crucial issue for manufacturers. In repetitive and mature processes with low defect levels, measured by defects per million opportunities (DPMO), it is difficult to reduce them even further. The purpose of this study is to reduce the defects rate in one key process, surface mount technology (SMT). The methodology is based on case study of an automotive supplier of electrical and electronic devices. It focuses on implementing Six Sigma tools, using the DMAIC to improve the solder paste printing process of Printed Circuit Boards (PCBs) in SMT. In the case study, solder paste volume defect is defined as the most common type of defect occurred in the process. The used method (proflow) was compared with a new selected method (squeegee) using statistical analyses. The volume defect was reduced over 50% and the sigma level was increased from 5.0 to 5.2.

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7

Title : Study and Evaluation of a European Option by Heston Model

Authors : Mohammed Lakhdar Hadji

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In this work we propose an approximate numerical method for an option pricing by the Heston model. First we prove the existence and uniqueness of the solution in a weighted Sobolev space, and then we propose the finite element and finite difference methods to solve the considered problem. Therefore, we compare the obtained results for the two approaches, with those by the Monte Carlo method in Broadie-Kaya. To show the efficiency of the numerical approaches, we use different values of the interest rate and show improvements in the results for the convergence and cputime.

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8

Title : Order Ten Implicit One-Step Hybrid Block Method for The Solution of Stiff Second-order Ordinary Differential Equations

Authors : Y. Skwame, J. Sabo, P. Tumba, T. Y. kyagya

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A one-step hybrid block method for initial value problems of general second order Ordinary Differential Equations has been studied in this paper. The method is developed using interpolation and collocation techniques. The use of the power series approximate solution as an interpolation polynomial and its second derivative as a collocation equation is considered in deriving the method. Numerical analysis shows that the developed new method is consistent, convergent,   and order ten. The new method is then applied to solve the system of second-order ordinary differential equations and the accuracy is better when compared with the existing methods in terms of error.

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9

Title : Short-Term Power Production Forecasting in Smart Grid Based on Solar Power Plants

Authors : Qudsia Memon, Nurettin Cetinkaya

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Abstract :

Since the world is moving towards the modernization so the smart grid idea is one of the smart idea leads to the modernization. One of the most important factors for the smart grid is the optimal production-commutation balance. Due to the lacking capabilities of accomplishing the increasing needs of the power with normal procedures, the world is moving towards the power production from the renewable energy sources. To get the efficient power production, the world is making the grids which generate power from the renewable sources, smart. Since solar is one of the important renewable energy sources, hence the changing climatic conditions affect heavily the ratio of power production from the solar sources. In this research, some of these climatic factors are considered to predict the solar power production by using the real-time data of a solar power plant located at Konya, Turkey. The inputs factors in consideration are on the daily basis which includes the average humidity, the minimum, average and the maximum temperatures, the solar irradiance, average and the maximum wind speed and the power generation values. The behavior of this solar power plant along with the prediction of the power production is carried out by using an Artificial Neural Network (ANN) in Matrix Laboratory (MATLAB) software’s built-in toolbox named as Neural Net Fitting toolbox. In ANNs, three different built-in learning algorithms in this toolbox named as Levenberg-Marquardt, Bayesian Regularization, and Scaled Conjugate Gradient are used to compare the prediction results, finally to get good and accurate results.

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10

Title : Comparative Analysis Of Interplanetary Magnetic Field And Moving Charged Particles

Authors : Jaiyeola O. Paul, Abdullahi Ayegba

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The discussion reviews the wave-particle duality of clouds of ions, protons and electron blown out from Sun and enter Earth’s magnetic field. They behave as particles when they are at rest or moving with uniform motion-velocity from the source or co-rotate with Sun and behave as waves when they are moving with non-constant motion-velocity (non-uniform motion) in other word accelerating. We then compared Velocity Field with Radial component of Interplanetary Magnetic Field (IMF) and Acceleration Field with Azimuthal component of Interplanetary Magnetic Field (IMF) using Koskinen, Linard-Wiechert Equation and Lorentz force equation. It was then discovered that the velocity field is equivalent to Radial Component of Interplanetary Magnetic Field (IMF) and the Acceleration Field is Equivalent to Azimuthal component of Interplanetary Magnetic Field. The interplanetary magnetic field component can be expressed as: (i). Velocity-Radial component of IMF (ii). Acceleration-Azimuthal component of IMF.

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11

Title : An Examination of the Effects of Customer Expectation, Perceived Quality, and Customer Satisfaction on Customer Loyalty: A Case Study on KFC Restaurant

Authors : Marzan Rahman, Imran Hossain, Farhana Mitu, Mohitul Ameen Ahmed Mustafi, Mamun Miah

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Abstract :

This research has proposed a conceptual framework to investigate the effects of customer expectation, perceived quality, and customer satisfaction on customer loyalty. This study has been conducted on 210 customers, with a structured questionnaire, who have received those services from a different restaurant in Dhaka city of Bangladesh. For collecting data, convenient sampling technique has been used. For analyzing data multivariate analysis techniques like factor analysis and Structural Equation Modeling (SEM) has been used. Descriptive statistics have been used for explaining the demographic characteristics of the customers. This study reveals that customer expectation is a significantly negative relationship with customer loyalty in a direct way but, this factor (customer expectation) is a significantly positive relationship with customer loyalty via customer satisfaction. This study also reveals that perceived quality is not a significant relationship with customer satisfaction but, this factors (Perceived Quality) is a significantly positive relationship with customer loyalty in a direct way.  A clear understanding of the actual relationships among the studied factors might encourage the KFC restaurant to figure out an appropriate course of action to win customers expectation by providing better services in order to create a loyal customer base.

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12

Title : On the Approximate Solution of Fractional Logistic Equation by Shannon Wavelets

Authors : Mesut Karabacak, Ebubekir Karabacak

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In this paper, the numerical solution of fractional order logistic equation (FOLE) is considered by Shannon wavelet functions. We derive the wavelet operational matrix of the fractional order integration and by using it to solve the fractional order logistic equation. An illustrative example is presented to demonstrate the applicability and validity of this wavelet base technique. The results obtained are in good-agreement with the exact solutions. It is shown that the technique used here is effective and easy to apply.

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13

Title : Improvement and Simulation Analysis of Wavelet Threshold Algorithm

Authors : Jun Guo, Yao Wang, Wenjun Yi

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By studying the traditional threshold function , it is found that the hard threshold function is discontinuous , the pseudo - Gibbs phenomenon occurs , and the soft threshold function is too much eliminating the detail coefficient , which causes the loss of high - frequency signal . The simulation experiment of Wavelet threshold noise reduction for different sonar signals is carried out. The experimental results show that the improved threshold function is better than the conventional algorithm , and the noise - reducing signal has higher SNR and smaller RMSE.

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14

Title : Review of Literature on Rural Road Improvement

Authors : Jayant Mishra, Ajay Swaroop

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Rural roads are the tertiary road system in total road network which provides connectivity for the rural population to market and other facility centres. In India rural roads are being planned and programmed in the favour of overall rural development, and tried to provide all weather connectivity with some level of achievement. The investment of funds for road development provided policy guidelines and priorities for rural roads. Improvement of rural road is needed where satisfactory results are not obtained.

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15

Title : Studies on Production and Characterization of Bio Diesel from Jatropha

Authors : Ram Pratap, Prof. (Dr.) A. K. Jain, Dr. Manish Saxena

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Our world is getting industrialized and modernized with each passing day which is increasing the vehicles and engines in our daily life and solution is not to reduce them but to use them in a smarter way. However we are having limited resources for petro-fuels. Therefore it is a high time to search for new alternatives in place of petro-fuels. Our research is based on finding such an alternative fuel in the form of Jatropha Oil which is easily available on the earth especially in India. We have compared Jatropha oil with Diesel on a Diesel engine, on different parameters such as CO emission, break thermal efficiency, break specific fuel consumption, smoke density and hydrocarbon emission. We have observed that Jatropha oil is either close to diesel or sometimes performing better than diesel and can be used an alternative to Diesel.

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