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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.

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3

Title : SURF feature extraction algorithm based on visual saliency improvement

Authors : Zongyuan Zhu, Guicang Zhang, Hongjie Li

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Abstract :

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.

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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.

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5

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

Authors : Jin Wen, Xiufen Cheng

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Abstract :

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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