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Volume 5 Issue 3 (March 2018)

S.No. Title & Authors Page No View
1

Title : An Investigation on the Mechanical and physical Properties of AL6061/SiCp/Gr Metal Matrix Composites

Authors : S.S.Mohamed, Sayed.A.Abdallah, Hamdan k.h.Alazemi

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Abstract :

In the present work, using stir casting technique Al 6061 matrix was reinforced with graphite particles and silicon carbide particles to study the effect of graphite and silicon carbide reinforcement using mechanical testing and wear behaviour. Different volume fractions of silicon carbide viz. 5%, 10% 15% are incorporated into the alloy, maintaining the volume fraction of graphite as 3% for all proportions. Mechanical properties such as Micro-Vickers hardness test and compression strength are determined and tribological behaviour of the composite is studied using wear test. With 15% reinforcement of SiC particles, the hardness and ultimate strength are higher and the results of wear test demonstrates an increase in wear resistance with increase in SiC reinforcement.

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2

Title : Study on the Effect of Recycled Aggregate on the Performance of EPS Concrete

Authors : Luxin Fu, Zhirong Jia, Ruirui Jiang

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The performance indexes of recycled aggregate and expanded polystyrene (EPS) particles were detected in order to study the effect of recycled aggregate on the failure mechanism and properties of EPS concrete. A series of parallel tests were designed that based on the strength forming mechanism and compressive failure theory of EPS concrete to study the effect of recycled aggregate on the performance of EPS concrete with EPS substitution rate of 50%. The results show that recycled aggregate instead of primary coarse aggregate used in EPS concrete can effectively inhibit the occurrence of segregation of EPS concrete and improve the compressive strength of EPS concrete. EPS concrete has the advantages of high safety performance, economic and environmental protection, and its application to engineering will achieve great economic and social benefits. The incorporation of recycled aggregate makes the thermal insulation coefficient of EPS concrete little change, so the effect of recycled aggregate on thermal insulation properties of EPS concrete is negligible.

6-12
3

Title : SURF feature extraction algorithm based on visual saliency improvement

Authors : Zongyuan Zhu, Guicang Zhang, Hongjie Li

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Feature extraction is an important link in image retrieval and image matching.Aiming at the problem of the traditional feature extraction method, which is too simple to extract valid dimension and feature points, a SURF weight algorithm combining visual significance and improvement is proposed to extract the key points:. SURF algorithm of image is utilized to extract the key point, and then through improved significant find significant area detection method, key points can be divided into two parts, the significant region and significant area, external point by weighting algorithm to judge the importance of structure information, thus retaining structure information important points.The experimental results show that the feature points extracted by this method are more comprehensive and improve the accuracy of image matching.

13-17
4

Title : Programmable Resistors : Model and Applications

Authors : Y. Kebbati

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Abstract :

In this paper, we present the model of programmable resistors based-on memristor component. We also show the interest to use programmable resistor in the case of analog electronic circuits. In the first of paper, we  present the memristor. In fact before 1971, the passive electrical components is limited to three: resistor, capacitor and inductor. In 1971, Chua predicts the existence of a fourth element that links the charge to the magnetic flux.  After a discussion on the modeling of memristor and critics of the scientific community about the existence of the memristor and its modeling, in the second part, we will present Matlab simulation results of HP lab model. We will also show the interest of using memristor in analog electronic circuits through a programmable resistor model.

18-20
5

Title : An efficient approximation method for the nonhomogeneous backward heat conduction problems

Authors : Jin Wen, Xiufen Cheng

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This paper presents a new improved meshless numerical scheme to solve the nonhomogeneous backward heat conduction problems. Fundamental solutions of heat equations and radial basis functions of both   and   are employed to obtain a numerical  ill-conditioned, the Tikhonov regularization method is adopted to solve the resulting system of linear equations. Therefore, generalized cross-validation (GCV) method is used to choose a regularization parameter. The accuracy and efficiency of our proposed method is illustrated by several typical 1-D and 2-D numerical examples.

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6

Title : Comparative study of Reinforced Concrete frame structure & Steel-Concrete composite structure subjected to static and dynamic loading

Authors : Parag P. Limbare, Prof. P. A. Dode

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Abstract :

The word ‘composite’ in composite material signifies that two or more materials are combined on a macroscopic scale to form a useful material and the individual materials are easily distinguishable. In the present work RCC structure with steel concrete composite options are considered for comparative study of G+20 story building which is situated in earthquake zone-II and for earthquake loading, the provisions of IS: 1893 (Part1)-2002 is considered. The design and analysis of the structure are carried out with the help of STAAD-PRO software. The results are compared and found that composite structure more economical.

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7

Title : On modified GSI method for singular saddle point problems

Authors : Juan Li, Dan Zhang

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Recently, Miao considered the GSI method for singular saddle point problems and studied the semi-convergence of the GSI method. In this paper, we prove the semi-convergence of Modified GSI method when it is applied to solve the singular saddle point problems.

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8

Title : The Study on Group Self -Pooling and Annuitization Schemes Payment on Dynamic Motality Model

Authors : Hongmin Xiao, Xiaodan Yang, Zhi’e Ma

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Abstract :

As the mortality rate declines year by year and the increase of life expectancy of population brings tremendous pressure on our pension system, it is particularly important to accurately predict the mortality rate. Due to the limited population mortality data in China, this article based on the Lee-Carter model, using Co-integration theory to overcome the limitation of ARIMA model and construct a prediction model of male mortality in China. Meanwhile a Group Self-Annuitization (GSA) with higher payment was introduced and the predicted mortality rate was substituted into the GSA model. Finally we give the endowment insurance proposal that is suitable for our country's national conditions, in the real sense, we can achieve the goal that the citizens in our country should be "empowered and old".

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9

Title : Instrumentation of Earth & Rock Fill Dams

Authors : R.S. Sehra, S.L. Gupta

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Abstract :

An effective instrumentation and monitoring program combined with regular inspection are the key factors of a good dam safety program. Instrumentation data can be of benefit only if the instruments function reliably, the data are received and evaluated in a timely manner and values are compared to the documented design limits and historical behavior.

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10

Title : Drug Treatment in Rheumatoid Arthritis

Authors : Lambrini Kourkouta, Ekaterina Frantzana, Christos Iliadis, Theologia Ziogou

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Introduction: Rheumatoid arthritis is the most common inflammatory autoimmune rheumatic disease that without proper treatment can cause permanent lesions and deformities of the joints resulting in long-term functional disability or disability.

Purpose: In this review study is provided the pharmaceutical treatment of rheumatoid arthritis in order to promote the quality of life of these patients.

Material & Methods: The material of the study was a recent article on the topic found mainly in the Medline database and the Hellenic Academic Libraries Association (HEAL-Link).

Results: Early diagnosis of the disease, as well as early onset of treatment, helps significantly in the successful management of the disease. Conventional treatment for rheumatoid arthritis includes non-steroidal anti-inflammatory anti-rheumatic drugs or other disease-modifying drugs such as methotrexate and corticosteroids. The goal of medication is to reduce pain and inflammation, minimize loss of function, and prevent complications and joint damage.

Conclusions: The goal of pharmaceutical therapy is the recession of inflammation. Treatment planning is also different for each patient; both because the disease is not as severe in everyone as the needs of each patient are different.

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11

Title : Elliptic Curve based r out of n Key Distribution Scheme for Hierarchy Wireless Sensor Networks

Authors : C.Porkodi, K.Sangavai

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Abstract :

Wireless Sensor Networks (WSNs) widely used in many sensitive fields like target tracking, battle field surviellance, intruder detection, health care and hostile environments. In such applications, the security of data transmission is an important issue and it is achieved through cryptographic algorithms. Key establishment is a primary security service in sensor networks and it facilitates sensor nodes to communicate securely with each other. In this paper, a ‘r out of n” key distribution scheme based on elliptic curve cryptography is proposed. The computational overhead of the nodes in the network is reduced and the survival time of the network is extended in the proposed scheme as the base station is involved in the majority of the computations.

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12

Title : Exploration of Extensive Electricity Demand in Nepal

Authors : Nawraj Bhattarai, Manjana Ghimire

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The aim of this research is to comprehensively analyze the Nepal’s long term electricity demand for the year 2012 to 2030. For this purpose, different scenarios have been considered. This analysis was done using IAEA’s model, Model for Analysis of Energy Demand which is a bottom up model. The secondary data were obtained from government agencies and other organizations in energy sector. Starting from the base year, the future electricity demand has been projected under three scenarios comprising of possible future demographic, socio-economic and technological development of a country. The base year electricity demand is 3004 GWh which will reach to 6202 GWh in 2030 under Business as Usual Scenario (BAU). Further in Medium Growth Scenario (MG) and High Growth Scenario (HG), the electricity demand will reach 8399 GWh and 11783 GWh respectively. The percentage of share of electricity in base case for industry, agriculture, transportation, residential and service sector are respectively 38.31%, 2.42%, 0.19%, 47.39% and 11.67%. The result under high growth scenario shows that the total projected electricity demand for all the sectors in 2030 will be 11783GWh, out of which 5084GWh is industry, 4463GWh, 1991GWh, 183GWh and 62GWh are residential, service, agriculture and transport respectively. This shows how much electricity will be required to meet the projected demand in 2030.

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13

Title : Design and Implementation of GPS/BDS Dual-mode Satellite Navigation Receiver Based on ZYNQ-7020

Authors : Depan Chen, Shuai Chen, Lin Han

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With the development and perfection of the satellite navigation system, the development of multimode satellite navigation receiver has become one of the important research directions in the field of satellite navigation. This paper introduces a design method of GPS/BDS dual mode receiver based on ZYNQ-7020 architecture. The overall architecture design, joint location algorithm and carrier smoothed pseudo range of the dual mode receiver are introduced in detail. Finally, the feasibility of the design scheme and the positioning performance of the satellite receiver is verified through vehicle field test and simulation on low-orbit satellite orbit.

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14

Title : Soil Physico-Chemical Charateristics and Metalic Corrosion in Parts of The Niger Delta

Authors : Irunkwor T. C, Ngerebara O. D

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Soil physico-chemical parameters such as pH, organic matter, chloride and sulphate contents were investigated to assess their effect on buried metallic pipes for a proposed gas processing plant facility at Ovade-Ogharefe, Delta State, Nigeria. Ten sampling points along the pipeline route were investigated. Thus, a total of 10 borings each to a depth of 10.0m were drilled along the pipeline route using the Shell-and-Auger Percussion Rig to collect subsurface soil samples for laboratory analyses for physico-chemical characteristics. Soil pH was determined in-situ electronically using the glass electrode method with a standard calibrated pH meter. On the average, the soil is sandy clayey in nature and the results of the parameters tested are as follows: pH (5.2-7.5), chloride (8.9-85.4ppm), sulphate (126.3-266.5ppm) and organic matter content (0.41-0.42%). The low pH values of 4.2, 5.2, 5.3 and 5.5 as well as the high sulphate contents above permissible limit respectively at locations BH7, BH8, BH9 and BH10 implies that the soil is acidic and deleterious to buried metallic pipes which is  characteristic of clayey soils. It is recommended that the metallic pipes along the pipeline route be buried within the depth of 2.0 to 3.0m because that is the zone or layer of high pH, low chloride and low sulphate contents. However, the impressed current cathodic protection method is therefore recommended to minimize corrosion impact on the proposed gas pipeline.

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15

Title : The evolution game analysis of crowdfunding market financing supervision

Authors : Guoshun Ma, Yongfei Li

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The rapid development of Internet crowdfunding market financing has brought great convenience to consumer investment. However, due to the information asymmetry between the initiator and the investee, there is a great risk of investment behavior. Based on the theory of evolutionary game, through the establishment of replicated dynamic equations, the dynamic evolution process of crowdfunding platform and sponsors' strategic choices is analyzed, and the evolutionary stability strategies of both sides of the game are obtained. The conclusion shows that the punishment of deception, the success rate of supervision on crowdfunding platforms, and the awareness of investing in rights protection are key factors affecting the crowdfunding market.

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16

Title : Analysis of SPWM Technique for Solar Inverter

Authors : Mr.R.Ashokkumar, Raajeshwar Elangovan, Vinoth K, Vijayakumar S

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Reactive power control is necessary to maintain power system stable. In a three phase grid connected PV system, the inverter should regulate the reactive power. Low Voltage Ride Through has to be done to ensure the system stability in fault conditions. Fault current has to be limited. In this paper, we propose a control strategy for grid connected solar PV inverter. The system study is done under LVRT condition. The strategy is based on current loop under single axis dq rotating coordinate system. Grid connected PV systems has a three phase inverter fed by DC-DC converter which will take care of maximum power point. In this project, a 100kW PV system is studied. The entire system is simulated and analysed using MATLAB Simulink software.

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17

Title : Proximate Analysis of Polyalthia Longifolia Seeds

Authors : Folashade O. Oyedeji, Babatunde B. Adeleke, Christiana B. Olalude

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Proximate analysis of seeds of Polyalthia longifolia was carried out using gravimetric, volumetric and atomic absorption spectrometry.  The analysis revealed that percentage moisture, crude oil, crude protein, crude fiber and total carbohydrate were 5.0, 7.5, 14.0, 7.3 and 65.3g/100g of sample respectively. The mineral content as determined by Atomic Absorption Spectrophotometer (AAS) were potassium (269.37), magnesium (23.80), calcium (16.02), iron (12.19), sodium (6.03), manganese (4.86), copper (3.11), zinc (1.79), nickel (0.47), cobalt (0.18), lead (0.07) and chromium (0.05) µg/g of sample. The results showed that the seed cake could be a rich source of macro and micro nutrients. It implied that the seed could be used in the pharmaceutical and food industries for production of dietary supplements. The oil could be useful in the cosmetic industries for the production of a wide variety of cosmetics products.

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18

Title : Influence of Low Temperature Argon and Oxygen Plasma Treatment on the Band-gap of Jute

Authors : Md. Masroor Anwer, Shuranjan Sarkar, Md. Mahbubul Alam, S M Mahruf Hossain, Md. Mahbubul Hoque, Md. Tahzibul Haque, Khaled Saifullah

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Low temperature plasma (LTP) treatment is an environmentally friendly surface modification technique. It was applied to biodegradable and ligno-cellulosic jute fibre. In this experimental work two nonpolymerizing gases viz.  argon (Ar) and oxygen (O2) plasmas were applied for treatment purposes. With the aim in view, treatment times were 5, 10, 15 and 20 min. and power levels of 50, 75 and 100 W with a flow rate of 0.2 L/min. Ultraviolet Visible (UV-Vis.) spectra of LTP treated jute fibres at various exposure times with different discharge powers were recorded at room temperature in absorption mode using a spectrophotometer in the wavelength range of 200 to 1100 nm. The absorption spectra were recorded for LTP treated jute at various exposure times with different discharge powers. The UV-Vis. spectroscopic analysis reveals that the band gap of jute increases with the increase of exposure times as well as discharge powers. It is also observed from the experiment that band gap of jute when treated by Ar plasma is higher than that of jute treated by O2 plasma.

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Title : CO2 Laser Surface Treatment Of (Si3n4) Engineering Ceramic

Authors : Maryam Q. Jaleel, Saad A. Mohammed Salih

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This research has utilized co2 laser to process silicon (Si3N4) engineering ceramic. Several aspect of laser beam –ceramics intersection can be understood in order to establish  real change in the morphology microstructure, density, hardness, surface toughness and fracture toughness parameter (K1c).This work has succeeded to modify the properties. This has been proved by different test s applied ,e.g., SEM . The most appropriate equation identified for the determination of the fracture toughness parameter K1c among several equation is : K1c=0.016 (E/Hv) 1/2 (P/c3/2).

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Title : Using Constructivist Approach to Enhance Students Understanding of Logarithmic Functions: A Case Study of Kalpohin Senior High School, Tamale-Ghana

Authors : Hamidu Ibrahim Bukari, Abdul-Rahaman Yakubu

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This paper deals with using constructivist approach to enhance students’ understanding of logarithmic function in Kalpohin Senior High School. Purposive sampling technique was employed to obtain a sample (n = 60) of male and female second year Agricultural Science and Home Economics students from Kalpohin Senior High School in Tamale, the Northern Region of Ghana. A constructivist-based instructional (CBI) approach was employed and evaluated using three instruments- pre-test, post-test and unstructured interviews to measure students’ understanding of logarithmic function, their attitudes and views about Constructivist approach.

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Title : Estimation and characterization of municipal solid waste in Nekede landfill, Owerri metropolis, Nigeria

Authors : Okere Kelechi Justin, Abu Gideon O., Ndukwu Benjamin

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Municipal Solid Waste (MSW) generation is on the rise in metropolitan areas especially in developing countries such as Nigeria. Poor understanding of waste dynamics, political and fiscal capital has led to inadequate management. Consequently there are plethora of environmental issues including adverse impact on ecosystem services and functions. So understanding the composition and characteristics of generated waste is essential in developing the right policies and strategies for efficient management. MSW generated in Owerri metropolis are hauled commingled to Nekede landfill near Otamiri river.  Data on quantity of waste generated are not available. Furthermore reports by varying researchers indicate heavy metal contamination of Otamiri river. Thus this research was done to estimate and characterize waste discharged at Nekede landfill. Emphasis is on hazardous component, since when discharged into landfill, it could introduce heavy metals in adjoining rivers. Therefore study will enhance understanding the link between hazardous waste composition and heavy metal contamination detected in Otamiri river. A multi criteria assessment has been applied in this research. They include review of relevant literatures. Reference [4] was used to sample and classify the MSW; the hazardous waste fraction was benched on the classification by [50] and [11]. Result indicate a monthly MSW generation of 19,950-30,000 tonnes with organic portion of over 60%; per capita generation rate of 1.24-1.9kg/day with hazardous waste fraction of between 16.2% and 18.7%. This correlate the studies by some researchers that implicated the Nekede landfill. Yet further studies should analyze the varying components of the hazardous waste and model the mass transport phenomena via conceptual site model (CSM) to confirm the impact of the Nekede landfill on Otamiri river.

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Title : Alkali-Silica Reactivity Of Three River Basin (Chenab, Satluj And Beas) - An Overview

Authors : Lalit Kumar Solanki, S. K. Jain, B. K. Munzni

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Alkali-silica reaction is one of the most recognized deleterious phenomenon in concrete that results in excessive expansion, cracks, loss in mechanical properties and serviceability problems. Aggregates constitute about three-quarter of the volume of concrete, and therefore their physical, mechanical and chemical properties need to be correctly assessed before their use in concrete. Aggregate component in concrete define its thermal, elastic properties and mineralogical composition which influences the durability of concrete. This paper presents research on the influence of strain quartz percentage in aggregates for the occurrence of potentially deleterious alkali-silica reaction in concrete. The aggregates susceptible to ASR were evaluated using petrographic analysis, aggregate mineralogy, chemical method of ASTM C 289 and the standard methods of ASTM C 1260 and ASTM C 1293. Aggregate classifications into innocuous and reactive based on the stated mineralogy tests and the potential expansion limits based on the standard test methods and their modifications were compared. The study demonstrated that none of the single method is an ideal approach to evaluate the alkali-silica reactivity of an aggregate in a better way and a suitable combination of various methods can be utilized to better predict the potential ASR of an aggregate.

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Title : Evolutionary Game Analysis of Stable Development of the Real Estate Market

Authors : Ning Zheng, Guoshun Ma

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The mathematical model of two kinds of consumers in real estate market is set up by using evolutionary game theory , and by replicating the dynamic equation and evolutionary game model to analyze the behavior strategy of the main body.The results show that as long as there is a phenomenon of real estate speculation, the real estate market can not develop stably, and government intervention is needed at this time. The government's punishment for speculators is an important guarantee for the stable development of the real estate market.

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Title : An Estimation Method of the Range of Weighting Coefficients where the Solution Prefered by an Operator is Optimal in Multi-Objective Optimization

Authors : Hirokazu Kobayashi, Ryosuke Tachi, Hisashi Tamaki

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In the weight method, which is known as one of solutions to the multi-objective optimization problem, it is possible to obtain Pareto optimal solutions by repeating the different weighting coefficients from previous ones and solving by using them. In this research, as a reverse procedure to the above, when a solution preferred by an operator is given, a method of estimating the range of the weighting coefficients where this solution becomes optimal is proposed. We regard a target problem as a mathematical programming problem and estimate the range of weighting coefficients for each purpose based on the basic idea of simplex method. Through some examples, the effectiveness of the proposed approach is examined, and it is confirmed that we can estimate the range of weighting coefficients where the solution preferred by the operator becomes optimal, when this solution exists in feasible region.

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Title : ANN Modelling for Prediction of Moisture Content and Drying Characteristics of Paddy in Fluidized Bed

Authors : Phyu Phyu Thant, P.S. Robi, P. Mahanta

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Drying characteristics of paddy were studied in inclined bubbling fluidized bed dryer at the air temperatures of 55, 60 and 65°C, air velocities of 1.1, 1.6, and 2.1 m/s, dryer inclination angles of 0˚, 15˚ and 30˚ and inventories of 0.5 to 2.5 kg. By applying the artificial neural networks (ANNs), moisture content of paddy was predicted under the various input conditions of different drying air temperatures, superficial air velocities, inclination angles of dryer, inventories and drying time. The learning of ANN is accomplished by feed forward back propagation algorithm. The simulated results are compared with the experimental results. The effect of input parameters is significant on the moisture content and drying time. The optimized ANN was found 12 neurons in hidden layer. The 1st and 2nd functions are tansig and logsig, respectively at 84 iterations and error goal is 0.00006. The ANN model gives the average absolute relative error (AARE) of an acceptable level of 3.3% with a correction coefficient (Rcc) of 99.6% and it is found that moisture content predicted by the neural network model developed in this work is in a good agreement, which have a non-linear relationship with each other is believed to be an accurate prediction the moisture content of grain.

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Title : Biodiesel Washing Water Treatment using Zeolite and Activated Carbon as Adsorbents

Authors : O. R. Obanla, D. E. Bababtunde, T. A. Ogunbiyi, T. E. Oladimeji, M. I. Ifepe

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Biodiesel production was produced from the transesterification of palm oil and methanol using KOH catalyst. The process variables considered are  methanol to oil mole ratio of 4 – 6 and catalyst concentration of 0.2 – 1.0 wt/wt% Oil, at constant reaction temperature of 60℃ and constant reaction time of 60 minutes. Response surface plot showed that maximum yield of biodiesel (92 %) was obtained at 0.4 wt/wt% catalyst concentration and methanol/oil mole ratio of 7. The conventional activated carbon and zeolite produced were used separately as adsorbents in the treatment of biodiesel washing water. Comparatively, zeolite produced displayed better adsorption property compared to the conventional activated carbon in removing the six heavy metals considered from the biodiesel washing water. For instance, Chromium concentration of 0.0096 mg/L was reduced to 0.0023 mg/L after adsorption treatment with activated carbon (76 % efficiency), while the concentration was reduced to 0.0010 mg/L after the adsorption treatment with zeolite (89 % efficiency).

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