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27,404 Article Results

A Study on MapReduce: Challenges and Trends

10.11591/ijeecs.v4.i1.pp176-183
Sachin Arun Thanekar , K. Subrahmanyam , A. B. Bagwan
Nowadays we all are surrounded by Big data. The term ‘Big Data’ itself indicates huge volume, high velocity, variety and veracity i.e. uncertainty of data which gave rise to new difficulties and challenges. Big data generated may be structured data, Semi Structured data or unstructured data. For existing database and systems lot of difficulties are there to process, analyze, store and manage such a Big Data. The Big Data challenges are Protection, Curation, Capture, Analysis, Searching, Visualization, Storage, Transfer and sharing. Map Reduce is a framework using which we can write applications to process huge amount of data, in parallel, on large clusters of commodity hardware in a reliable manner. Lot of efforts have been put by different researchers to make it simple, easy, effective and efficient. In our survey paper we emphasized on the working of Map Reduce, challenges, opportunities and recent trends so that researchers can think on further improvement. 
Volume: 4
Issue: 1
Page: 176-183
Publish at: 2016-10-01

A Modulation Scheme for Floating Source Multilevel Inverter Topology with Increased Number of Output Levels

10.11591/ijece.v6i5.pp1985-1993
Hussain M. Bassi
This paper presented and studied a new switching scheme for floating source multilevel inverters to produce more levels with the same number of switching devices. In the proposed scheme, the function of the dc sources, except the inner one, is to build up square wave or blocks that is close in the shape to the desired sinusoidal wave. The job of the inner switching devices is to increase the number of the levels to produce smother sinusoidal wave in the inverter output. This job can be done by adding or subtracting the value of the inner dc source to/from the blocks. The topology used in this paper is based on the conventional floating source multi-level inverter using two legs. This topology and modulation technique show substantial reduction in the total harmonics distortion when the modulation technique is the hybrid method. The performance of the proposed switching scheme in generating more levels has been evaluated by PSCAD/EMTDC simulation.
Volume: 6
Issue: 5
Page: 1985-1993
Publish at: 2016-10-01

A Novel Approach to PID Controller Design for Improvement of Transient Stability and Voltage Regulation of Nonlinear Power System

10.11591/ijece.v6i5.pp2225-2238
Rekha Chaudhary , Arun Kumar Singh , Saligram Agrawal
In this paper, a novel design method for determining the optimal PID controller parameters for non-linear power system using the particle swarm optimization (PSO) algorithm is presented. The direct feedback linearization (DFL) technique is used to linearize the nonlinear system for computing the PID (DFL-PID) controller parameters. By taking an example of single machine infinite bus (SMIB) power system it has been shown that PSO based PID controller stabilizes the system and restores the pre-fault system performance after fault is cleared and line is restored. The performance of this controlled system is compared with the performance of DFL-state feedback controlled power system. It has been shown that the performance of DFL-PID controlled system is superior compared to DFL-state feedback controlled system. For simulation MATLAB 7 software is used. 
Volume: 6
Issue: 5
Page: 2225-2238
Publish at: 2016-10-01

Private Cloud Storage Using OpenStack with Simple Network Architecture

10.11591/ijeecs.v4.i1.pp155-164
Albert Sagala , Ruth Marlina Hutabarat
The development of cloud computing was highly developed and increasingly in demand by many parties. Cloud computing was very helpful to user to perform data storage without preparing own physical device. Cloud storage is a part of cloud computing where it can facilitate user to upload and download files, view file status. The main barrier to implement the private cloud was the difficulty in configuration of many components involved. These conditions minimize the implementation of the private cloud in many parties. In this research, we demonstrate cloud storage architecture simply by using only three nodes with OpenStack. The first node is the controller, the second node is object storage and the third is object storage. Elaborating the component that should be activated to implement the private cloud. The result of this research will help parties who want to build private cloud storage with simple network architecture using OpenStack Object Storage.
Volume: 4
Issue: 1
Page: 155-164
Publish at: 2016-10-01

FPGA Implementation of a Nakagami-m fading channel Simulator using Random Number Generator

10.11591/ijeecs.v4.i1.pp133-140
Santhosh Kumar B , K. Ayyappa Swamy
By realizing the concept of implementation of the radio propagation channels on simulators is the eminent intention of this work. Even though prototyping software simulators are effortless to design we prefer hardware simulators as they endeavors distinguishable quickness, compared to earlier. Prior to this work fading channels like Gaussian, Rayleigh and Rician fading channel simulators were executed on hard ware.(i.e. FPGA) The significant target  of this attempt is to implement Nakagami-m  fading channel on hardware as they preserved for  unsubstantial consideration. While differentiating with other fading channels  Nakagami-m fading channel acquires wide spread applications, as its capability of providing  appropriate fit for practical fading data, as this is flexible through its size parameter ‘m’, over which representation of signal fading conditions that vary  from serious to modest, to normal  fading or no fading is accomplished . The proposed hardware simulator can hatches complex Nakagami variates after it was implemented on XilinxSpartan-xc3s500e-4fg320 FPGA. This is operated at 50MHz.
Volume: 4
Issue: 1
Page: 133-140
Publish at: 2016-10-01

Spatio-Temporal Typology of Land and Forest Fire in Sumatra

10.11591/ijeecs.v4.i1.pp83-90
Israr Albar , I. Nengah Surati Jaya , Bambang Hero Saharjo , Budi Kuncahyo
The characteristic of land and forest fires occurred in Indonesia are varied widely, following the variation of time within a year and geographic location. This paper describes how the spatio-temporal of forest and land fire typology was developed. The main objective of this study was to develop a spatio-temporal typology of forest and land fire by considering several key indicators that directly related to the density of active fire occurrence, such as percentage of forest area (x1), population density (x2), ratio of forest area to population (x3), ratio of plantation area to population (x4), ratio of agriculture area to population (x5), GRDP (x6), population growth (x7), deforestation growth (x8), plantation growth (x9) and dry agriculture growth (x10) as well as  MODIS-based fire hotspot. The typology analysis was performed using clustering techniques with Euclidean distance dissimilarity measure, where the grouping process was drawn with single linkage method. The temporal analysis showed that the highest occurrence of the fire hotspot was mainly found in the third quarter. It was found that the forest and land fire typology could be developed into three classes using variables x6 and x7 with overall accuracy of 78.15% or x1-x6-x7 with overall accuracy of 78.8%.  No accuracy improvement was obtained when the typology was developed using five variables x1-x3-x4-x6-x7.
Volume: 4
Issue: 1
Page: 83-90
Publish at: 2016-10-01

Performance Analysis of SMES Integrated with Offshore Wind Farms to Power Systems through MT-HVDC

10.11591/ijeecs.v4.i1.pp1-9
Mohammed A. Badr , Ahmed M. Atallah , Mona A. Bayoumi
With the increase in the development of offshore wind farm (OWF) around the world, this paper describes OWF consisting of permanent magnet synchronous generator (PMSG) wind turbines connected to Active network (AC grid) and Passive network (loads) through Multi Terminal High voltage direct current(MT-HVDC) transmission system. This paper discusses the effect of using a Superconducting Magnetic Energy Storage (SMES) unit in a hybrid power system that contains OWF. In this paper, we have aggregated 300 wind turbines of 1.5 MW PMSG using an aggregation technique (multi full aggregated model using equivalent wind speed (MFAM_EWS)). Furthermore, we have used a detector to detect any tripping of any wind turbine and substitute the shortage of power due to this loss of wind turbines immediately through SMES. The Active network in this paper should have a minimum of 150 MW power to be supplied by controlling the SMES unit (absorbing or providing power according to the system requirement). Simulation has been carried out by MATLAB/Simulink program to test the effectiveness of the SMES unit during tripping some of the wind turbines, fluctuation in wind speeds, load change and voltage dips. 
Volume: 4
Issue: 1
Page: 1-9
Publish at: 2016-10-01

Internal On-line Partial Discharge Analysis of 68.75 MVA Generator Stator Winding Insulation

10.11591/ijece.v6i5.pp2088-2095
Waluyo Waluyo , Siti Saodah , Eltha Hidayatullah
Partial discharge is a phenomenon of electron ionization occurs due to concentrated electric field in a different edge plane. This phenomenon will be investigated by an electric field measurement in a measuring point. The internal partial discharge will give the insulation damage effect on a generator stator winding due to void existence. This manuscript presents the measurement results of the on-line internal partial discharge on the stator winding insulation of 68.75 MVA generator. It used the resistant temperature detector method and CM2000TM. The results were classified into three conditions based on the voids in the generator stator insulation, the internal delamination and the surface discharge.
Volume: 6
Issue: 5
Page: 2088-2095
Publish at: 2016-10-01

A New P System Based Genetic Algorithm

10.11591/ijeecs.v4.i1.pp165-168
Caiping Hou , Xiyu Liu
For the “early convergence” or the “genetic drift” of the genetic algorithm, this paper proposes a new genetic algorithm based on P system. Based on the parallel mechanism of P system in membrane computing, we put forward the new P system based genetic algorithm (PBGA). So that we can improve the performance of GA.
Volume: 4
Issue: 1
Page: 165-168
Publish at: 2016-10-01

Android Malware Detection Using Backpropagation Neural Network

10.11591/ijeecs.v4.i1.pp240-244
Fais Al Huda , Wayan Firdaus Mahmudy , Herman Tolle
The rapid growing adoption of android operating system around the world affects the growth of malware that attacks this platform. One possible solution to overcome the threat of malware is building a comprehensive system to detect existing malware. This paper proposes multilayer perceptron artificial neural network trained with backpropagation algorithm to determine an application is malware or non-malware application which is often called benign application. The parameters that used in this study based on the list of permissions in the manifest file, the battery rating based on permission, and the size of the application file. Final weights obtained in the training phase will be used in mobile applications for malware detection. The experimental results show that the proposed method for detection of malware on android is effective. The effectiveness is demonstrated by the results of the accuracy of the system developed in this study is relatively high to recognize existing malware samples.
Volume: 4
Issue: 1
Page: 240-244
Publish at: 2016-10-01

Insulating Material Erosion in Atmospheric Non-Thermal Plasma Jet Device

10.11591/ijeecs.v4.i1.pp20-28
K. M. Ahmed , T. M. Allam , M. A. Abouelatta , S. A. Ward , A. A. Lashin , H. M. Soliman
This paper reports on the selection of insulating material types in a developed atmospheric-pressure non-thermal plasma jet (ANPJ-II) device which was operated previously in our laboratory based on the minimum erosion area of the insulator’s nozzle. Three identical insulator groups used in our experiment include; Teflon insulator material with different thicknesses of 1.5 mm and 2 mm respectively, and Ceramic insulating material with thickness of 2 mm. ANPJ-II device is operated with each of the three insulator groups. These insulators are operated and analyzed with different operation times for compressed Air or Nitrogen gas with a flow rate of 12 L/min and input voltage of 6 kV.  The erosion area of these insulator materials is measured as a function of the operation time. The Ceramic insulator was found to have the minimum erosion area. Also, the temperature of both the cathode and the insulating material (Teflon or Ceramic) are measured to study the effect of operation time and the gas type on the device components.
Volume: 4
Issue: 1
Page: 20-28
Publish at: 2016-10-01

The Peak of the PQRST and the Trajectory Path of Each Cycle of the ECG 12-Lead Wave

10.11591/ijeecs.v4.i1.pp169-175
Sabar Setiawidayat , Djanggan Sargowo , Setyawan P. Sakti , Sri Andarini
The objective of this present article is to describe the record of the ECG 12-lead examination in order to obtain the peaks of the P, Q, R, S and T from each cycle and also to present the Peak of the PQRST and the trajectory path of each cycle of the ECG 12- lead wave. The duration of the peak R to another is used as the period  of each cycle, while the Phytagoras theorem is employed to count the trajectory path of the wave in each step. The Peak PQRST is utilized to diagnose the  heart condition, and the trajectory path  is the distance taken up by the impulses in the heart muscles. The discrete data from the MIT-BIH and the results of the measurement itself are employed as the data to obtain the values of the peak PQRST and the trajectory path of the wave of each cycle.
Volume: 4
Issue: 1
Page: 169-175
Publish at: 2016-10-01

Two Dimensional Tunable Optical-CDMA System

10.11591/ijeecs.v4.i1.pp125-132
Rajesh Yadav Yadav , Gurjit Kaur Kaur
In this work an experimental demonstration is proposed to implement the synchronous optical code division multiple access system using two dimensional wavelength hopping and time spreading optical prime code is presented. An optical CDMA system is configured on latest version of optisystem by optiwave for the 20 users (Prime Number = 5) connected in a network operating at a bit rate 10 Gbps each. Tunability is achieved by using a MATLAB based delay selector which serves as the source of control signal for optical delay lines. The encoded optical signal of each user has been assigned a particular mode. The resulting optical signal is then transmitted over parabolic index multimode optical fiber. The received signal can successfully be retrieved at the decoder, when the encoder and decoder are configured for the same user. The performance of Optical CDMA system is evaluated in terms of the autocorrelation and cross correlation function, BER, Q factor, eye diagram and compared with 1D code for a given prime number. 
Volume: 4
Issue: 1
Page: 125-132
Publish at: 2016-10-01

TreeNet Analysis of Human Stress Behavior using Socio-Mobile Data

10.11591/ijeecs.v4.i1.pp148-154
B. Padmaja , V. V. Rama Prasad , K. V. N
Human behavior is essentially social and humans start their daily routines by interacting with others. There are many forms of social interactions and we have used mobile phone based social interaction features and social surveys for finding human stress behavior. For this, we gathered mobile phone call logs data set containing 111444 voice calls of 131 adult members of a living community for a period of more than 5 months. And we identified that top 5 social network measures like hierarchy, density, farness, reachability and eigenvector of individuals have profound influence on individuals stress levels in a social network. If an ego lies in the shortest path of all other alters then the ego receives more information and hence is more stressed. In this paper, we have used TreeNet machine learning algorithm for its speed and immune to outliers. We have tested our results with another Random Forest classifier as well and yet, we found TreeNet to be more efficient. This research can be of vital importance to economists, professionals, analysts, and policy makers.
Volume: 4
Issue: 1
Page: 148-154
Publish at: 2016-10-01

A Novel Generalized Topology for Multi-level Inverter with Switched Series-Parallel DC Sources

10.11591/ijeecs.v4.i1.pp41-51
S. Sridhar , P. Satish Kumar , M. Susham
This paper presents a novel topology of Single-phase multilevel inverter for low and high power applications. It consists of polarity (Level) generation circuit and H Bridge to generate both positive and negative polarities. The proposed topology can produce more output voltage levels by switching dc voltage sources in series and parallel. The proposed topology utilizes minimum number of power electronic devices which leads to the reduction of cost, size, and weight low and consumes low power which improves the efficiency. Switching pulses are generated using Phase disposition (PD) pulse width modulation technique. Finally the effectiveness of the proposed topology is verified using MATLAB/SIMULINK software tool. 7level asymmetrical multilevel inverter prototype hardware is prepared to support the proposed topology to verify the effectiveness and its validity.
Volume: 4
Issue: 1
Page: 41-51
Publish at: 2016-10-01
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