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    Volume 07 || Issue 05 || Version-1 May- 2018
    Paper Id ::
     ..........
    Paper Title :: On The Propagation of Free Waves in Viscoelastic Layered Bodies
    Author Name :: Ro'ziyev Т.R. || Nuriddinov B.Z. || Khojiyev А.
    Page Number :: 01-09
    :: 10.9790/1813-0705010109   

    At this work the propagation of natural waves in dissipative inhomogeneous planar bodies is discussed. Wave motions are described by linear integral-differential equations. Solving this problem, we obtain a relationship between the wave velocity and its length. The task of this kind is of great interest for geophysicists, in the field of engineering and construction.

    Keywords - viscoelastic half-space, layer, equation of motion, phase velocity.

    @article{key:article,
    author = {Ro'ziyev Т.R. || Nuriddinov B.Z. || Khojiyev А.},
    title = {On The Propagation of Free Waves in Viscoelastic Layered Bodies},
    journal = {The International Journal of Engineering and Science},
    year = {2018},
    volume = {07},
    number = {05},
    pages = {01-09},
    month = {May}
    }
    Paper Id ::
     ..........
    Paper Title :: Design, Analysis and Manufacturing of Integrated Hub and Rotor for an All Terrain Vehicle
    Author Name :: Sujaysinh S. Patil || Poonam D. Shinde || Suraj S. Ahire || Varsha N.Nalawade
    Page Number :: 10-16
    :: 10.9790/1813-0705011016   

    Now-a-days commercial All Terrain Vehicles (ATV'S) use separate hub and rotor. In this research paper we design, analyze, manufacture INTEGATED HUB AND ROTOR (Brake Disc) for all ATV'S. Design and analysis of components is done on CATIA V5 and ANSYS WORKBENCH 16.0 respectively. At first, we designed integrated hub and rotor for ATV in SAE BAJA 2017 competition which turned out to be very reliable. In this paper we are designing integrated hub and rotor (IHR) considering different materials to further reduce weight, overall size and manufacturing cost.

    Keywords - Al 7076-T6, Baja vehicle, En 8, En 24, Integrated hub and rotor, Static analysis, SG cast iron, Thermal analysis.

    @article{key:article,
    author = {Sujaysinh S. Patil || Poonam D. Shinde || Suraj S. Ahire || Varsha N.Nalawade},
    title = {Design, Analysis and Manufacturing of Integrated Hub and Rotor for an All Terrain Vehicle},
    journal = {The International Journal of Engineering and Science},
    year = {2018},
    volume = {07},
    number = {05},
    pages = {10-16},
    month = {May}
    }
    Paper Id ::
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    Paper Title :: Model Test Prestressed Steel Truss Bridge With Composite Floor
    Author Name :: Andi Indianto || Iwan Supriyadi
    Page Number :: 17-24
    :: 10.9790/1813-0705011724   

    This paper presents the result of research on the composite pre-stressed steel truss for the typical steel truss bridge with deck above. Pre-stressing was carried out by installing tendon / pre-stressed cable at lower part of the truss, connected to their anchorages which are installed at both ends. The composite action of the structure was obtained by connecting the reinforced concrete deck and top chords of the truss using bolts which functioned as shear connectors. To understand the serviceability thereof, a loading test was conducted to the structure with and without shear connectors. A digital mechanical of loading test was used for this purpose. It yielded that the serviceability of the composite pre-stressed steel truss was 71% bigger than that of noncomposite.

    Keywords - Tendons, prestress, anchors, composite, shear connector.

    @article{key:article,
    author = {Andi Indianto || Iwan Supriyadi},
    title = {Model Test Prestressed Steel Truss Bridge With Composite Floor},
    journal = {The International Journal of Engineering and Science},
    year = {2018},
    volume = {07},
    number = {05},
    pages = {17-24},
    month = {May}
    }
    Paper Id ::
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    Paper Title :: Corrosion Of Mild And Medium Carbon Steels In Federal
    Polytechnic, Unwana Environment
    Author Name :: S. I Okeahialam || A. O. Okeahialam || H. A. Okeahialam || S.C Ekenyem || C. C Ogbu || A. A. Imah
    Page Number :: 25-30
    :: 10.9790/1813-0705012530   

    Corrosion of mild and medium carbon steels is reported. Steels were exposed to water fetched in Polytechnic Unwana environment and distilled water (control) environment. The corrosion rates were evaluated at intervals of fourteen days for a period of 84 days using weight loss and electrochemical methods. The corroded specimens were visually examined and majorities were found to have undergone general corrosion in all environments investigated. The mild steel was found to corrode more than the medium carbon steel in the entire environment. Mild steel had 2.77x10-4mpy and -0.74mV, due to high rate of permeability and diffusion of corrosion inducing ions. It also has - 0.53mV in the distilled water (control). The medium carbon steel has 2.72x10-4mpy and -0.69mV in water fetched in polytechnic Unwana environment and -0.63mV in distilled water (control).

    Keywords - Corrosion, Environment, Carbon Steels.

    @article{key:article,
    author = {S. I Okeahialam || A. O. Okeahialam || H. A. Okeahialam || S.C Ekenyem || C. C Ogbu || A. A. Imah},
    title = {Corrosion Of Mild And Medium Carbon Steels In Federal Polytechnic, Unwana Environment},
    journal = {The International Journal of Engineering and Science},
    year = {2018},
    volume = {07},
    number = {05},
    pages = {25-30},
    month = {May}
    }
    Paper Id ::
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    Paper Title :: Kinetics And Thermodynamic Studies Of Polycyclic Aromatic Hydrocarbons Uptake From Used Engine Oil
    Author Name :: Ejikeme, Patrick. C. N || Ejikeme, Ebere, M. || Onyia, Ogechukwu, S.
    Page Number :: 31-37
    :: 10.9790/1813-0705013137   

    In this work, base oil was recovered from used engine oil using solvent extraction with butanol, followed by adsorption of polycyclic aromatic hydrocarbon (PAH) unto activated carbon prepared from brewers' spent grain. Kinetic and thermodynamic studies for the adsorption process were studied. Kinetic data were fitted to eight models; lagergren pseudo-first order, pseudo-second order, first- order, second-order, Elovich model, intra-particle diffusion, liquid film diffusion and pore (Banghams) diffusion model and it found out that the data fitted well to pseudo-second order model. Thermodynamic study showed that the process was endothermic in nature, feasible and spontaneous. The values of entropy obtained showed that the adsorption of PAH involved a dissociative adsorption mechanism. The activation and Gibbs free energies values confirmed the adsorption of PAH to be chemical reaction-based process.

    Keywords - Polycyclic Aromatic Hydrocarbons (PAHs), used engine oil, adsorption, butanol, kinetics, toluene, and thermodynamics.

    @article{key:article,
    author = {Ejikeme, Patrick. C. N || Ejikeme, Ebere, M. || Onyia, Ogechukwu, S.},
    title = {Kinetics And Thermodynamic Studies Of Polycyclic Aromatic Hydrocarbons Uptake From Used Engine Oil},
    journal = {The International Journal of Engineering and Science},
    year = {2018},
    volume = {07},
    number = {05},
    pages = {31-37},
    month = {May}
    }
    Paper Id ::
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    Paper Title :: Administrative & Financial Corruption In Developing Countries ( Case Of Study)
    Author Name :: Souad Ali Omer Burak || Abdalla Mohamed Almabrouk Alghandouri
    Page Number :: 38-43
    :: 10.9790/1813-0705013843   

    The phenomena of administrative and financial corruption is one of dangerous phenomena facing countries, particularly developing countries, where it took necrosis in the body of their societies began to security and the subsequent paralysis in the construction and economic development process, which involves the destruction of the economy ,financial and administrative capacity, therefore the state deficit to meet the challenges of the age or reconstruction and build the infrastructure needed for growth. This problem (corruption) is met attention of many researchers and those who interested agreed consensus on the need to develop and establish an institutional framework designed to encircle the problem and treated through the serious, concrete steps in all its forms and manifestations in all areas of life to accelerate the process of economic development. This research focus on developing countries.

    Keywords - administrative corruption, financial corruption, developing countries, political corruption.

    @article{key:article,
    author = {Souad Ali Omer Burak || Abdalla Mohamed Almabrouk Alghandouri},
    title = {Administrative & Financial Corruption In Developing Countries ( Case Of Study)},
    journal = {The International Journal of Engineering and Science},
    year = {2018},
    volume = {07},
    number = {05},
    pages = {38-43},
    month = {May}
    }
    Paper Id ::
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    Paper Title :: Optimal Synergetic Control for Wind Turbine System
    Author Name :: Radhia Ettouil || Karim Chabir || Mohamed Naceur Abdelkrim
    Page Number :: 44-48
    :: 10.9790/1813-0705014448   

    In this paper, a optimal synergetic control using the BAT algorithm is established. The synergetic approach is presented. Then the BAT algorithm is presented and used to provide optimization of the synergetic parameter in order to obtain an optimal synergetic controller. The effectiveness of the proposed optimal synergetic control is verified using a numerical example.

    Keywords - Synergetic theory, BAT optimization algorithm, , pitch system.

    @article{key:article,
    author = {Radhia Ettouil || Karim Chabir || Mohamed Naceur Abdelkrim},
    title = {Optimal Synergetic Control for Wind Turbine System},
    journal = {The International Journal of Engineering and Science},
    year = {2018},
    volume = {07},
    number = {05},
    pages = {44-48},
    month = {May}
    }
    Paper Id ::
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    Paper Title :: Characterization Of Oxide Fuel Element Temperature Of RSG GAS By Using Forced And Natural Convection Cooling Mode
    Author Name :: Sudarmono || Endiah Puji Hastuti
    Page Number :: 49-56
    :: 10.9790/1813-0705014956   

    The RSG-GAS reactor is a pool type research reactor which is operated at a power level of 30 MW using LEU MTR-type fuel. RSG-GAS uses both of forced convection cooling mode and natural convection mode. An assessment of the steady state and natural convection thermal hydraulic capabilities of the computer HEATHYDE and NATCON codes was made using model for a RSG GAS reactor core. The measurement results of temperature distributions for fuel, clad and coolant core thermo-hydraulics are compared to the results of HEATHYDE and NATCON codes at steady state and natural convection condition. The heat transfer characteristics of down flow in the single-phase forced-convection will be investigated by Temperature measurement is done using two instrumented fuel elements equipped with thermocouple. The assessment has included both steady-state and natural convection analyses of safety margins and limits..............

    Keywords - oxide fuel element, instrumented fuel element, RSG GAS, HEATHYDE, NATCON.

    @article{key:article,
    author = {Sudarmono || Endiah Puji Hastuti},
    title = {Characterization Of Oxide Fuel Element Temperature Of RSG GAS By Using Forced And Natural Convection Cooling Mode},
    journal = {The International Journal of Engineering and Science},
    year = {2018},
    volume = {07},
    number = {05},
    pages = {49-56},
    month = {May}
    }
    Paper Id ::
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    Paper Title :: Use of the Drag Method to Study the Magnetic Behavior ofMn-Zn Ferrite Nanoparticles
    Author Name :: Letícia dos Santos Aguilera || José Brant de Campos || Ronaldo Sergio de Biasi || André Ben-Hurda Silva Figueiredo
    Page Number :: 57-61
    :: 10.9790/1813-0705015761   

    The drag method was used to study the magnetic behavior of manganese-zinc (Mn-Zn) ferrites with different Zn concentrations. The results were similar to those obtained using a Vibrating Sample Magnetometer (VSM), showing that the drag method may be a simple, cheap way to investigate the magnetic properties of nanoparticles.

    Keywords - drag method, nanoparticles, magnetization, manganese-zinc ferrite.

    @article{key:article,
    author = {Letícia dos Santos Aguilera || José Brant de Campos || Ronaldo Sergio de Biasi || André Ben-Hurda Silva Figueiredo},
    title = {Use of the Drag Method to Study the Magnetic Behavior ofMn-Zn Ferrite Nanoparticles},
    journal = {The International Journal of Engineering and Science},
    year = {2018},
    volume = {07},
    number = {05},
    pages = {57-61},
    month = {May}
    }
    Paper Id ::
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    Paper Title :: The Use of Response Surface Analysis to Obtain Optimum Values of Smoothing Parameter in Holt-Winter Modelling
    Author Name :: Azme Bin Khamis || Muhammad Akhbarfahim Bin Rahmat || Kamil Khalid || Shuhaida Ismail || Khuneswari Gopal Pillay
    Page Number :: 62-66
    :: 10.9790/1813-0705016266   

    Response Surface Methodology is used to find the most optimum smoothing values of Holt-winters method. Data used is the price of natural rubber SMR20 in Malaysia. Natural rubber really helps in Malaysia's economic growth, where the price does reflect performance and quality of the product. Therefore, the prediction on price of natural rubber is one of the interests to government and financial minister in specific to manage nation's financial matters. Monthly price of natural rubber data January 2000 to December 2015 was obtained from Malaysian Rubber Board official website. Holt-winter Additive and Holt-winter Multiplicative method are used to forecast price of natural rubber and Response Surface Methodology is used to optimize the smoothing values of Holt-winters. In addition, MAPE is used to validate the accuracy of each smoothing values for both Holtwinter Additive and Holt-winter Multiplicative. The result showed that Holt-winter Multiplicative model with, 𝛼 = 0.99, 𝛽 = 0.03 and 𝛾 = 0.44performed as the best model for forecasting price of natural rubber SMR20 in Malaysia.

    Keywords - forecasting, SMR20, Response Surface Analysis, Holt-winter

    @article{key:article,
    author = {Azme Bin Khamis || Muhammad Akhbarfahim Bin Rahmat || Kamil Khalid || Shuhaida Ismail || Khuneswari Gopal Pillay},
    title = {The Use of Response Surface Analysis to Obtain Optimum Values of Smoothing Parameter in Holt-Winter Modelling},
    journal = {The International Journal of Engineering and Science},
    year = {2018},
    volume = {07},
    number = {05},
    pages = {62-66},
    month = {May}
    }
    Paper Id ::
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    Paper Title :: Relation Between Niño3.4 And SOI By Wavelet-Based Multifractal Analysis
    Author Name :: Fumio Maruyama
    Page Number :: 67-74
    :: 10.9790/1813-0705016774   

    In general, fractal properties may be observed in the time series of the dynamics of complex systems. The purposes of this study are to investigate the relations between the Niño3.4 index and the Southern Oscillation Index (SOI), which are both ENSO indices, from a view of multi-fractality. The Niño3.4 index and SOI are obtained from sea surface temperature and sea level pressure, respectively. To detect the changes of multifractality, we performed the multifractal analysis on the time series of the Niño3.4 index and SOI. Between 1950 and 2010, for the Niño3.4 and SOI, the matching in monofractality or multifractality was observed and the increase and decrease of multifractality were very similar especially for the 1970s, that is the change of multifractality were very similar...........

    Keywords - Niño3.4, SOI, global SST, wavelet, multifractal.

    @article{key:article,
    author = {Fumio Maruyama},
    title = {Relation Between Niño3.4 And SOI By Wavelet-Based Multifractal Analysis},
    journal = {The International Journal of Engineering and Science},
    year = {2018},
    volume = {07},
    number = {05},
    pages = {67-74},
    month = {May}
    }
    Paper Id ::
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    Paper Title :: Modeling And Simulation Of Novel Topology For Dc-Dc Boost Converter For Solar Pv Applications
    Author Name :: J. D. Jiya || B. U. Musa || M. Abdulkadir || Abdullahi Musa Askira
    Page Number :: 75-82
    :: 10.9790/1813-0705017582   

    Renewable energy systems offer environmental and economic advantages in producing energy compared to the conventional fossil fuel systems. However, the renewable energy generated by these sources such as photovoltaic cells has a low-voltage output characteristic, and for most potential applications, a high boost DCDC converter is required. The selection of an appropriate converter topology is an important and fundamental aspect of designing a photovoltaic cell system as the converter alone plays a major role in determining the overall performance of the system. A number of modified high step-up converter topologies have been proposed in order to increase the voltage conversion ratio. However, the converter efficiency is quite low because of the leakage inductance energy stored in the auto-transformer and the coupled inductors............

    Keywords - About five key words in alphabetical order, separated by commas.

    @article{key:article,
    author = {J. D. Jiya || B. U. Musa || M. Abdulkadir || Abdullahi Musa Askira},
    title = {Modeling And Simulation Of Novel Topology For Dc-Dc Boost Converter For Solar Pv Applications},
    journal = {The International Journal of Engineering and Science},
    year = {2018},
    volume = {07},
    number = {05},
    pages = {75-82},
    month = {May}
    }