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29,325 Article Results

Decision Making Analysis of Video Streaming Algorithm for Private Cloud Computing Infrastructure

10.11591/ijece.v7i6.pp3529-3535
Irfan Syamsuddin , Rini Nur , Hafsah Nirwana , Ibrahim Abduh , David Al-Dabass
The issue on how to effectively deliver video streaming contents over cloud computing infrastructures is tackled in this study. Basically, quality of service of video streaming is strongly influenced by bandwidth, jitter and data loss problems. A number of intelligent video streaming algorithms are proposed by using different techniques to deal with such issues. This study aims to propose and demonstrate a novel decision making analysis which combines ISO 9126 (international standard for software engineering) and Analytic Hierarchy Process to help experts selecting the best video streaming algorithm for the case of private cloud computing infrastructure. The given case study concluded that Scalable Streaming algorithm is the best algorithm to be implemented for delivering high quality of service of video streaming over  the private cloud computing infrastructure.
Volume: 7
Issue: 6
Page: 3529-3535
Publish at: 2017-12-01

Reconfigurable Metamaterial Structure at Millimeter Wave Frequency Range

10.11591/ijece.v7i6.pp2942-2949
B. A. F. Esmail , H. A. Majid , Z. Z. Abidin , S. H. Dahlan , M. K. A. Rahim
In this paper, reconfigurable metamaterial structure at millimeter wave frequency range was designed and simulated for a future fifth generation (5G) mobile-phone beam switching applications. The new proposed structure was composed of a bridge-shaped resonator (BSR) in the front face and strip line at the back face of the unit cell which operates at 28 GHz. First, non-reconfigurable low loss BSR unit cell was designed and subsequently, the reconfigurability was achieved using four switches formed in the gaps of the structure. The proposed structure achieves the lowest loss and almost full transmission among its counterparts by -0.06 dB (0.99 in linear scale). To demonstrate the reconfigurability of the metamaterial, the reflection and transmission coefficients and real parts of the effective refractive index at each reconfigured frequency were studied and investigated. Simulation results showed that a high transmission and reflection peaks occur at each resonance frequency according to change the state of the switches.
Volume: 7
Issue: 6
Page: 2942-2949
Publish at: 2017-12-01

Energy Saving in Pilger Mill Electric Drives Complete Solution

10.11591/ijpeds.v8.i4.pp1673-1681
Yuriy Usynin , Dmitry Sychev , Nikita Savosteenko
This paper considers issues related to increasing energy efficiency in electric drives of pilger rolling mills, presenting kinematics of such mills, provides justification for the general load chart, presents the detailed review of reference materials on technical energy saving solutions, and suggests a math model of an electric drive with a field regulated reluctance machine. The paper suggests key methods of saving energy in electric drives of pilger mills, namely: kinematic scheme improvement; main energy drainers and ways of energy loss reduction in electric drives with direct- and alternate-current motors, energy-saving electric drive control profiles. The article compares energy-saving resources in electric drives with various-type motors (direct-current motors, synchronous motors, and field regulated reluctance machine), clarifies the scheme of energy-saving resource implementation, provides the qualitative evaluation of electric drive control method efficiency. The accent is made on high energy efficiency of the proportionate control of armature and excitation circuits and across the range of torque in electric drives of abruptly-variable-load mills. The highest economic effect is reached in the electric drive with a field regulated reluctance machine – by means of implementing the energy-efficient electromechanical converter and applying energy-saving control profiles.
Volume: 8
Issue: 4
Page: 1673-1681
Publish at: 2017-12-01

Development of Non-Invasive Ultrasonic Measuring System for Monitoring Multiphase Flow in Liquid Media within Composite Pipeline

10.11591/ijece.v7i6.pp3076-3087
Mohd Fadzli Abd Shaib , Ruzairi Abd Rahim , S.Z.M. Muji
Process of conveying liquid substance via the pipeline is the most common practice of transferring the liquid from one point to another point. Composite pipeline is becoming an option for liquid conveying purposed (instead of PVC, acrylic or metal) for its durability, longer lifetime and non-corrosive material in comparison with current pipeline. In order to ensure, the conveying process has a smooth flow rate without particle or bubble disturbance that could hinder good process flow, non-invasive monitoring system is always required. The ultrasonic measuring system is one of the monitoring options that could be applied. With proper designed for transmitting and conditioning circuitry, 300 kHz ultrasonic frequencies are found as the optimal frequency needed to penetrate across the composite pipeline with full of liquid. The ultrasonic sensor response is being successfully differentiated between full flow (no material blockage) and with bulk material blockage (dry and wet sand).
Volume: 7
Issue: 6
Page: 3076-3087
Publish at: 2017-12-01

Practical Performance Evaluation of Maximum Power Point Tracking Algorithms in a Photovoltaic System

10.11591/ijpeds.v8.i4.pp1744-1755
Hassan Abouobaida , EL Beid Said
This paper addresses a performance evaluation of maximum power point tracking techniques (MPPT) in a photovoltaic system. This research work finds its applications in photovoltaic systems producing electric power with a better energy efficiency, which will lead to an improved relationship between the cost and the amount of the produced power. The importance of this work resides on the one hand in the evaluation of the performances of the different MPPTs according to three criteria instead of one or two criteria in other works of the literature and on the other hand in the study of Four algorithms in one paper and their comparisons. This paper discusses the performance evaluation of the MPPT algorithms called P&O, Inc-Cond, Hill-Climbing and Fuzzy algorithms based simulation results and practical validation. The performances of these algorithms are evaluated according to the following criteria: The response time, the amplitude of the oscillations around the optimal point and the accuracy. The objectives in this article are summarized in the following points: (a) modeling the photovoltaic systems, (b) presenting and detailing each MPPT algorithm (c) presenting and discussing the simulation results in Matlab/Simulink and practical validation (d) evaluating the performance of each algorithm. This paper is completed by a summary on the areas of use for each algorithm and conclusions.
Volume: 8
Issue: 4
Page: 1744-1755
Publish at: 2017-12-01

Network Reconfiguration of Primary Distribution System Using GWO Algorithm

10.11591/ijece.v7i6.pp3226-3234
A. V. Sudhakara Reddy , M. Damodar Reddy , M. Satish Kumar Reddy
This manuscript presents a feeder reconfiguration in primary distribution networks with an objective of minimizing the real power loss or maximization of power loss reduction. An optimal switching for the network reconfiguration problem is introduced in this article based on step by step switching and simultaneous switching. This paper proposes a Grey Wolf Optimization (GWO) algorithm to solve the feeder reconfiguration problem through fitness function corresponding to optimum combination of switches in power distribution systems. The objective function is formulated to solve the reconfiguration problem which includes minimization of real power loss. A nature inspired Grey Wolf Optimization Algorithm is utilized to restructure the power distribution system and identify the optimal switches corresponding minimum power loss in the distribution network. The GWO technique has tested on standard IEEE 33-bus and 69-bus systems and the results are presented.
Volume: 7
Issue: 6
Page: 3226-3234
Publish at: 2017-12-01

Limited Data Speaker Verification: Fusion of Features

10.11591/ijece.v7i6.pp3344-3357
T. R. Jayanthi Kumari , H. S. Jayanna
The present work demonstrates experimental evaluation of speaker verification for different speech feature extraction techniques with the constraints of limited data (less than 15 seconds). The state-of-the-art speaker verification techniques provide good performance for sufficient data (greater than 1 minutes). It is a challenging task to develop techniques which perform well for speaker verification under limited data condition. In this work different features like Mel Frequency Cepstral Coefficients (MFCC), Linear Prediction Cepstral Coefficients (LPCC), Delta (4), Delta-Delta (44), Linear Prediction Residual (LPR) and Linear Prediction Residual Phase (LPRP) are considered. The performance of individual features is studied and for better verification performance, combination of these features is attempted. A comparative study is made between Gaussian mixture model (GMM) and GMM-universal background model (GMM-UBM) through experimental evaluation. The experiments are conducted using NIST-2003 database. The experimental results show that, the combination of features provides better performance compared to the individual features. Further GMM-UBM modeling gives reduced equal error rate (EER) as compared to GMM.
Volume: 7
Issue: 6
Page: 3344-3357
Publish at: 2017-12-01

Optimal Round Robin CPU Scheduling Algorithm Using Manhattan Distance

10.11591/ijece.v7i6.pp3664-3668
N. Srilatha , M. Sravani , Y. Divya
In Round Robin Scheduling the time quantum is fixed and then processes are scheduled such that no process get CPU time more than one time quantum in one go. The performance of Round robin CPU scheduling algorithm is entirely dependent on the time quantum selected. If time quantum is too large, the response time of the processes is too much which may not be tolerated in interactive environment. If time quantum is too small, it causes unnecessarily frequent context switch leading to more overheads resulting in less throughput. In this paper a method using Manhattan distance has been proposed that decides a quantum value. The computation of the time quantum value is done by the distance or difference between the highest burst time and lowest burst time. The experimental analysis also shows that this algorithm performs better than RR algorithm and by reducing number of context switches, reducing average waiting time and also the average turna round time.
Volume: 7
Issue: 6
Page: 3664-3668
Publish at: 2017-12-01

A Series Regeneration Converter Technique for Voltage Balancing of Energy Storage Devices

10.11591/ijeecs.v8.i2.pp475-481
A K M Ahasan Habib , S. M. A. Motakabber , Muhammad I. Ibrahimy
A single series resonant converter has been designed to balance the voltage level of a storage battery for electric vehicles. The proposed design has been simulated and verified by using two 100F supercapacitors instate of the conventional rechargeable battery. A voltage monitoring circuit detects the voltage condition of the individual capacitor and sends the voltage status to the control circuit for action. A technique has been developed to control a set of switches to transfer the current between the capacitor to balance the voltage level. The MATLAB simulated result shows the balancing circuit decreases the voltage difference between the two supercapacitors from 200 mV to 0V in 140 seconds, which is less than the existing methods. This fast voltage balancing technique can be used in the battery management system or electric vehicles for long lasting the battery life. Keywords: Voltage balancing; electric vehicles; supercapacitor; battery; series resonant converter
Volume: 8
Issue: 2
Page: 475-481
Publish at: 2017-11-01

Enhanced Capability, Reliability, and Productivity for Submerged Geophysical Mapping of Unexploded Weapons

10.11591/ijeecs.v8.i2.pp564-566
CH. Vijayalakshmi
This paper presents comes about because of innovation advancement endeavors throughout the most recent 6 years concentrated on submerged unexploded weapons (UXO) discovery and arrangement. Our approach abuses coordinated geo-referenced detecting advancements and have application for undertakings running from ports and harbor improvement to seaward vitality and wind cultivate improvement. Compelling discovery of UXO, accomplished through various innovations, uses techniques archived in the United States Air Force (USAF) Military Munitions Response Program (MMPR) Underwater Military Munitions Guidance Document, distributed in 2014. Evaluation stages and advances include: remotely worked vehicles (ROVs) for starting site observation; multibeam echo sounder (MBES) for bathymetry; sides can sonar (SSS) for ocean bottom target discovery; sub-base profiling for residue portrayal; stationary examining sonar for high resolution base conditions; attractive field mapping by means of towed, vessel-sent, base after wing or from a towed gliding stage for shallow-water settings; ROV-based optical and acoustic studies and target cross examinations; and ROV-based electromagnetic enlistment (EMI) exhibits for target cross examination and characterization. The specialized difficulties identifying with precise geo-situating of these frameworks and cases of co-enrollment results are examined in most recent 10 years, the GDC has encouraged unified control of more than 100 remotely executed ventures.
Volume: 8
Issue: 2
Page: 564-566
Publish at: 2017-11-01

Harmonic Effects Analysis of Electronic Loads Controller On Self Excited Induction Generator (SEIG) Operations

10.11591/ijeecs.v8.i2.pp273-280
Refdinal Nazir , Andi Pawawoi , Riska Amalia
The aplication of Electonic Load Controller (ELC) on Self-Excited Induction Generator (SEIG) driven by renewable energy sources creates harmonic issues. This paper has analyzed the propagation of the harmonic current generated by the ELC in the generator system. Mathematical modeling and computer simulation is used to analyze the propagation of harmonic currents generated by ELC on the generator system. Laboratory testing has also been conducted to justify the simulation results. The study results showed that the propagation harmonic currents created by ELC on the stator widings of SEIG and main load side are rejected for high order components, and attenuated for lower order components. Consequently, the THDI of stator and main load current will be reduced significantly.
Volume: 8
Issue: 2
Page: 273-280
Publish at: 2017-11-01

Optimization of Food Composition for Hypertensive Patient using Variable Neighborhood Search

10.11591/ijeecs.v8.i2.pp327-334
Aprilia Nur Fauziyah , Wayan Firdaus Mahmudy
Hypertension is a major symptom that cause other diseases appear such as non-communicable diseases, cancer, and diabetes if the nutrients on hypertensive patients not controlled from the actual nutrition need. One of healthy life effort for the patients is consuming healthy food that considers level of salt in the foods. The problem to determine the food composition that considers level of salt and minimum cost of the food is solved using Variable Neighborhood Search. This study compares 3 neighborhood structures: insertion, exchange, and 2-opt. The use of 2-opt neighborhood structure gives the highest fitness averages of other neighborhood structure. Selection and arrangement of neighborhood structure in every k neighborhood have effect on the solution is obtained. The result of this study contains composition of foods with nutrients which are close to the needs of hypertension patients with attentions the sodium and minimal cost within a day.
Volume: 8
Issue: 2
Page: 327-334
Publish at: 2017-11-01

Obstacle detection technique using multi sensor integration for small unmanned aerial vehicle

10.11591/ijeecs.v8.i2.pp441-449
Muhammad Faiz Bin Ramli , Syariful Syafiq Shamsudin , Ari Legowo
Achieving a robust obstacle detection system for small UAV is very challenging. Due to size and weight constraints, very limited detection sensors can be equipped in the system. Prior works focused on a single sensing device which is either camera or range sensors based. However, these sensors have their own advantages and disadvantages in detecting the appearance of the obstacles. In this paper, combination of both sensors based is proposed for a small UAV obstacle detection system. A small Lidar sensor is used as the initial detector and queue for image capturing by the camera. Next, SURF algorithm is applied to find the obstacle sizes estimation by searching the connecting feature points in the image frame. Finally, safe avoidance path for UAV is determined through the exterior feature points from the estimated width of the obstacle. The proposed method was evaluated by conducting experiments in real time with indoor environment. In the experiment conducted, we successfully detect and determine a safe avoidance path for the UAV on 6 different sizes and textures of the obstacles including textureless obstacles.
Volume: 8
Issue: 2
Page: 441-449
Publish at: 2017-11-01

Cryptanalysis on Privacy-aware two-factor Authentication Protocol for Wireless Sensor Networks

10.11591/ijeecs.v8.i2.pp296-301
Younsung Choi
Das first proposed two-factor authentication combining the smart card and password to resolve the security problems of wireless sensor networks (WSNs). After that, various researchers studied two-factor authentication suitable for WSNs. In user authentication protocols based on the symmetric key approach, a number of elliptic curve cryptography (ECC)-based authentication protocols have been proposed. To resolve the security and efficiency problems of ECC-based two-factor authentication protocols, Jiang et al. proposed a privacy-aware two-factor authentication protocol based on ECC for WSNs. However, this paper performs a vulnerability analysis on Jiang et al.’s authentication protocol and shows that it has security problems, such as a lack of mutual authentication, a risk of SID modification and DoS attacks, a lack of sensor anonymity, and weak ID anonymity.
Volume: 8
Issue: 2
Page: 296-301
Publish at: 2017-11-01

The Non-Destructive Test Method as A Simple Way to Evaluate the Quality Of Metal Core Pcbs for High Power Micro-Assemblies

10.11591/ijeecs.v8.i2.pp281-286
A.V. Sukhanov , A.I Artemova , R.S Litvinenko
The article describes the necessity of an incoming quality control of the delivered power electronics elements especially at the stage of choosing a reliable supplier. In particular, in the field of the metal core PCBs production, there is a need to control not only its heat sink parameters, but also to control the quality of the joint interface of the metal core PCBs. Since the use of poor-quality materials or the violation of the technological process by the manufacturer can lead to the defects in the PCBs structure. Thus it can affect the heat sink efficiency and the reliability of the entire assembly. The article proposes and describes the method of nondestructive incoming quality control of metal core PCBs. This method is based on the use of ultrasonic layer-by-layer scanning for obtaining the internal structure of PCBs. The article presents the results of applying this method for the PCBs of various manufacturers. The data of the structure visualization and the influence of environment temperatures changes were also obtained. The result pictures of the tested samples before and after the thermal circling were obtained to study the possible degradation of the PCBs structure and its parameters.
Volume: 8
Issue: 2
Page: 281-286
Publish at: 2017-11-01
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