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27,404 Article Results

Failure Analysis and Reliability Study of NAND Flash-Based Solid State Drives

10.11591/ijeecs.v2.i2.pp315-327
R. Sayyad , Sangram Redkar
The research focuses on conducting failure analysis and reliability study to understand and analyze the root cause of Quality, Endurance component Reliability Demonstration Test (RDT) failures and determine SSD performance capability. It addresses essential challenges in developing techniques that utilize solid-state memory technologies (with emphasis on NAND flash memory) from device, circuit, architecture, and system perspectives. These challenges include not only the performance degradation arising from the physical nature of NAND flash memory, e.g., the inability to modify data in-place read/write performance asymmetry, and slow and constrained erase functionality, but also the reliability drawbacks that limits Solid State Drives (SSDs) performance.  In order to understand the nature of failures, a Fault Tree Analysis (FTA) was performed that identified the potential causes of component failures. In the course of this research, significant data gathering and analysis effort was carried out that led to a systematic evaluation of the components under consideration. 
Volume: 2
Issue: 2
Page: 315-327
Publish at: 2016-05-01

Development of a Decision-Making System for Sultan Moulay Slimane University in Beni Mellal, Morocco

10.11591/ijeecs.v2.i2.pp469-477
Abdellah Amine , Rachid Ait Daoud , Belaid Bouikhalene
The issue dealt with in this article is to develop a decision-making information system related to the digital environment of the University work. We propose to model the data within the university in order to transform a system of information into a decision-making information system, that is based on the trades databases oriented toward the actors. A decision-making information is a system that allows the decision makers of the university to have relevant information and powerful analytical tools to help them take the right decision at the right time.
Volume: 2
Issue: 2
Page: 469-477
Publish at: 2016-05-01

Power Sharing for Inverters Based on Virtual Synchronous Generator Control

10.11591/ijeecs.v2.i2.pp305-314
Hashim Hasabelrasul Hamid , Amar Ibrahim Hamza Ahmed
Power sharing is the most important challenging today, especially for parallel operation inverters. Recently to fixed this problem the virtual synchronous generator control strategy has been used. This paper introduced the parallel operation of three phase multilevel inverters with different capacities to share load power by used a newly strategy named VSG with droop method controller. The control strategy is used to make the inverters to emulate the transient , dynamic features of conventional synchronous generator and to gives accurate load sharing among the inverters in proportional to their ratings. To verify the performance of the proposed technique MATLAB/Simulink package for simulation experiment is established.
Volume: 2
Issue: 2
Page: 305-314
Publish at: 2016-05-01

An Effective Noise Adaptive Median Filter for Removing High Density Impulse Noises in Color Images

10.11591/ijece.v6i2.pp611-620
S. Abdul Saleem , T. Abdul Razak
Images are normally degraded by some form of impulse noises during the acquisition, transmission and storage in the physical media. Most of the real time applications usually require bright and clear images, hence distorted or degraded images need to be processed to enhance easy identification of image details and further works on the image. In this paper we have analyzed and tested the number of existing median filtering algorithms and their limitations. As a result we have proposed a new effective noise adaptive median filtering algorithm, which removes the impulse noises in the color images while preserving the image details and enhancing the image quality. The proposed method is a spatial domain approach and uses the 3×3 overlapping window to filter the signal based on the correct selection of neighborhood values to obtain the effective median per window. The performance of the proposed effective median filter has been evaluated using MATLAB, simulations on a both gray scale and color images that have been subjected to high density of corruption up to 90% with impulse noises. The results expose the effectiveness of our proposed algorithm when compared with the quantitative image metrics such as PSNR, MSE, RMSE, IEF, Time and SSIM of existing standard and adaptive median filtering algorithms.
Volume: 6
Issue: 2
Page: 611-620
Publish at: 2016-04-01

A cognitive approach for evaluating the usability of Storage as a Service in Cloud Computing Environment

10.11591/ijece.v6i2.pp759-769
Sharmistha Roy , Prasant Kumar Pattnaik , Rajib Mall
Cloud computing is a style of computing which thrives users requirements by delivering scalable, on-demand and pay-per-use IT services. It offers different service models, out of which Storage as a Service (StaaS) is the fundamental block of Infrastructure cloud that fulfills user’s excess demand of elastic computing resources.  But considering the competitive business scenario choosing the best cloud storage provider is a difficult task. Thus, usability is considered to be the key performance indicator which evaluates the better cloud storage based on user’s satisfaction. This paper aims to focus on the usability evaluation of StaaS providers namely Google drive, Drop box and One drive. This paper proposed a fuzzy based AHP model for measuring user satisfaction. Usability evaluation is carried out based on user feedback through Interview and Questionnaire method. Analysis of user feedback is done based on the fuzzy approach in order to remove vaguness. Whereas, AHP model is used for measuring satisfaction degree of the different cloud storage services and it solves the problem of selecting best cloud storage.
Volume: 6
Issue: 2
Page: 759-769
Publish at: 2016-04-01

Improved Performance of Four Switch Three Phase with SEPIC-Based Inverter

10.11591/ijeecs.v2.i1.pp96-106
Prabu B , Murugan M
The proposed novel four-switch three-phase (FSTP) inverter is to design to reduce the rate, difficulty, mass, and switching losses of the DC-AC conversion system. Here the output line voltage cannot exceed half the input voltage in the out-dated FSTP inverter and it operates at half the DC input voltage. Single-Ended Primary-Inductance Converter (SEPIC) is a novel design for the FSTP inverter proposed in this paper. In this proposed topology the necessity of output filters is not necessary for the pure sinusoidal output voltage. Related to out-dated FSTP inverter, the proposed FSTP SEPIC inverter raises the voltage utilization aspect of the input DC supply, where the suggested topology delivers the higher output line voltage which can be extended up to the full value of the DC input voltage. In the proposed topology a control used called the integral sliding-mode (ISM) control and this control is used to enhance its dynamics and to ensure strength of the system during different operating conditions. Simulation model and results are used to authorise the proposed concept and simulations results show the effectiveness of the proposed inverter.
Volume: 2
Issue: 1
Page: 96-106
Publish at: 2016-04-01

Influence of Gate Material and Process on Junctionless FET Subthreshold Performance

10.11591/ijece.v6i2.pp895-900
Munawar A Riyadi , Irawan D Sukawati , Teguh Prakoso , Darjat Darjat
The recent progress of dimension scaling of electronic device into nano scale has motivated the invention of alternative materials and structures. One new device that shows great potential to prolong the scaling is junctionless FET (JLFET). In contrast to conventional MOSFETs, JLFET does not require steep junction for source and drain. The device processing directly influence the performance, therefore it is crucial to understand the role of gate processing in JLFET. This paper investigates the influence of gate material and process on subthreshold performance of junctionless FET, by comparing four sets of gate properties and process techniques. The result shows that in terms of subthreshold slope, JLFET approaches near ideal value of 60 mV/decade, which is superior than the SOI FET for similar doping rate. On the other hand, the threshold value shows different tendencies between those types of device.
Volume: 6
Issue: 2
Page: 895-900
Publish at: 2016-04-01

New Electromagnetic Force-Displacement Sensor

10.11591/ijece.v6i2.pp560-566
Amine Benabdellah , Zakarya Abbassi , Abdelrhani Nakheli
A new electromagnetic force-displacement sensor is presented. Its operating principle is based on the fundamental laws of electromagnetism (Faraday-Lenz law) and the mechanical properties of a spring. The active elements are two coils made by a wire of 60 µm in diameter. Using different wire diameters or different number of wire turns in the coil modify the intensity of the magnetic field and the sensor response. The average accuracy of the sensor is about ∆d=1µm, and as a force sensor is about ∆F=1µN. This sensor could be successfully used for the manufacture of several measuring instruments.
Volume: 6
Issue: 2
Page: 560-566
Publish at: 2016-04-01

Advancement in Research Techniques on Medical Imaging Processing for Breast Cancer Detection

10.11591/ijece.v6i2.pp717-724
Sushma S J , S C Prasanna Kumar
With the advancement of medical image processing, the area of the healthcare sector has started receiving the benefits of the modern arena of diagnostic tools to identify the diseases effectively. Cancer is one of the dreaded diseases, where success factor of treatment offered by medical sector is still an unsolved problem. Hence, the success factor of the treatment lies in early stage of the disease or timely detection of the disease. This paper discusses about the advancement being made in the medical image processing towards an effective diagnosis of the breast cancer from the mammogram image in radiology. There has been enough research activity with various sorts of advances techniques being implemented in the past decade. The prime contribution of this manuscript is to showcase the advancement of the technology along with illustration of the effectiveness of the existing literatures with respect to research gap.
Volume: 6
Issue: 2
Page: 717-724
Publish at: 2016-04-01

Half Iris Matching Based on RED Algorithm

10.11591/ijict.v5i1.pp21-27
Akeel Ali Al-Hillali , Safaa S Omran
Iris recognition is one of the most accurate identification method and it is powerful for secure of information and identification between users. The Ridge Energy Direction (RED) algorithm is the most accurate and fast approach for iris recognition.  The RED algorithm reduces the effects of illumination, since only direction is used. The RED algorithm is applied after a normalization process consisting on two filter types (horizontal and vertical). This paper extends this algorithm by considering the lower portion of the iris because this portion is affected with less noise. We used different size of RED filter on Iris in order to compare the accuracy and time between them. We found that the higher filter size gives more accuracy but more processing time
Volume: 5
Issue: 1
Page: 21-27
Publish at: 2016-04-01

Use of Photovoltaics in Microgrid as Energy Source and Control Method Using MATLAB/SIMULINK

10.11591/ijece.v6i2.pp851-858
Sumaiya Rahman , Hasimah Abdul Rahman
Microgrid in power system has drawn wide attention due to its significant benefits in terms of sustainable energy system in recent years. This approach is the most economical alternative to conventional energy system which uses Renewable Energy (RE) resources. RE sources ensure pollution free and clean environment by emitting zero CO2. This paper proposes a design of a microgrid system using solar photovoltaics (PV) as the Distributed Energy Resources (DERs) and a controlling method for managing the components of microgrid by using MATLAB/SIMULINK. The results show that microgrid system is promising as alternative to replace the fossil fuel based energy system. Integration of an effective controller can help to manage the loads and resources, resulting in more stable and reliable. 
Volume: 6
Issue: 2
Page: 851-858
Publish at: 2016-04-01

Soft Systems Methodology (SSM) as a Viable Methodology for Knowledge Engineering: A Literature Review

10.11591/ijict.v5i1.pp1-10
Franklyn Chukwunonso
This paper presents a baseline perspective of knowledge engineering (KE) methodologies by taking a critical look at the methodological approaches currently used in knowledge engineering domain. A literature review bordering on; the knowledge role concept, knowledge elicitation techniques, and ontological approaches employed in knowledge engineering for the construction of knowledge-based systems (KBSs) was carried out. Journal and conference articles were sourced from multiple journals and research databases and a multi-step manual cross-checking based on carefully selected extraction and quality criteria were employed. The findings of the study show that the existing methodological approaches employed for constructing KBSs in KE is highly deficient and inefficient for solving KE problems under dynamic and uncertain environments. The paper concludes by presenting a strong argument as to why soft systems methodology is best suited for constructing knowledge base systems (KBS) in a spatially distributed, unstructured and shared domain specific context.
Volume: 5
Issue: 1
Page: 1-10
Publish at: 2016-04-01

The Influence of Moisture and Temperature on the Behavior of Soil Resistivity in Earthing Design Using Finite Element Method

10.11591/ijeecs.v2.i1.pp11-22
Sajad Samadinasab , Farhad Namdari , Mohammad Bakhshipor
Protection of equipment, safety of persons and continuity of power supply are the main objectives of the grounding system. For its accurate design, it is essential to determine the potential distribution on the earth surface and the equivalent resistance of the system. The knowledge of such parameters allows checking the security offered by the grounding system when there is a failure in the power systems.A new method to design an earthing systems using Finite Element Method (FEM) is presented in this article.In this approach, the influence of the moisture and temperature on the behavior of soil resistivity are considered in EARTHING system DESIGN. The earthing system is considered to be a rod electrode and a plate type electrode buried vertically in the ground.The resistance of the system which is a very important factor in the design process is calculated using Finite Element Method. Finite Element Method is used to estimate the solution of the partial differential equation that governs the system behavior. COMSOL Multiphysics 4.4 which is one of the packages that work with the FEM is used as a tool in this design.Finally the values of the resistance obtained by COMSOL Multiphysics are compared with the proven analytical formula values for the ground resistance, in order to prove the work done with COMSOL Multiphysics.
Volume: 2
Issue: 1
Page: 11-22
Publish at: 2016-04-01

New design of Network on Chip Based on Virtual Routers

10.11591/ijeecs.v2.i1.pp115-131
Mohamed Fehmi Chatmen , Adel Baganne , Rached Tourki
Network is considered the most convenient way to communicate between different IP integrated into the same chip. Studies have been developed to propose networks with improved performance in terms of latency, power consumption, throughput and quality of service. Most of these networks have been designed based on the 2-dimensional network structure. Recently, with the introduction of the new structure of 3D integrated circuits (3D IC), new works have used this type of circuit to design 3 dimensions on-chip networks. The advantage brought by this new structure is to reduce the average number of hops crossed from the source to the destination, which improves the throughput and the average latency of the network.
Volume: 2
Issue: 1
Page: 115-131
Publish at: 2016-04-01

A New Electrode Regulator System Identification of Arc Furnace Based on Time-Variant Nonlinear-Linear-Nonlinear Model

10.11591/ijeecs.v2.i1.pp32-39
Jinfeng Wang , Shoulin Yin , Xueying Wang
In this paper, we express arc furnace electrode regulator system as a time-variant nonlinear-linear-nonlinear model. On this basis, we propose an online identification method based on nonlinear-linear-nonlinear model system. This new scheme solves the problem of model variation and prediction precision decline causing by time-varying of arc characteristic. In order to dispose the difficulty of parameters separation in the online identification process, this new method adopts the mind of update the parameters of linear parts and nonlinear parts respectively. It realizes the parameters separation of system effectively. Simulation results show that this method can track the changes of arc characteristics effectively. That it achieves the aim of real-time monitoring and controlling system parameters.
Volume: 2
Issue: 1
Page: 32-39
Publish at: 2016-04-01
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