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29,758 Article Results

Development of a Java-based application for environmental remote sensing data processing

10.11591/ijece.v9i3.pp1978-1986
Bad-reddine Boudriki Semlali , Chaker El Amrani , Siegfried Denys
Air pollution is one of the most serious problems the world faces today. It is highly necessary to monitor pollutants in real-time to anticipate and reduce damages caused in several fields of activities. Likewise, it is necessary to provide decision makers with useful and updated environmental data. As a solution to a part of the above-mentioned necessities, we developed a Java-based application software to collect, process and visualize several environmental and pollution data, acquired from the Mediterranean Dialog earth Observatory (MDEO) platform [1]. This application will amass data of Morocco area from EUMETSAT satellites, and will decompress, filter and classify the received datasets. Then we will use the processed data to build an interactive environmental real-time map of Morocco. This should help finding out potential correlations between pollutants and emitting sources.
Volume: 9
Issue: 3
Page: 1978-1986
Publish at: 2019-06-01

Adaptive integral backstepping controller for linear induction motors

10.11591/ijpeds.v10.i2.pp709-719
Omar Mahmoudi , Abdelkrim Boucheta
Linear induction motors offer the possibility to perform a direct linear motion without the nead of mechanical rotary to linear motion transformers. The main problem when controlling this kind of motors is the existence of indesirable behaviours such as end effect and parameter variations, which makes obtaining a precise plant model very complicated. This paper proposes an adaptive backstepping control technique with integral action based on lyapunov stability approach, which can guarantee the convergence of position tracking error to zero despite of parameter uncertainties and external load disturbance. Parameter adaptation laws are designed to estimate mover mass, viscous friction coefficient and load disturbance, which are assumed to be unknown constant parameters; as a result the compensation of their negative effect on control design system. The performance of the proposed control design was tested through simulation. The numerical validation results have shown good performance compared to the conventional backstepping controller and proved the robustness of the proposed controller against parameter variations and load disturbance.
Volume: 10
Issue: 2
Page: 709-719
Publish at: 2019-06-01

Pre-service teachers’ web pedagogical content knowledge and online information searching strategies

10.11591/ijere.v8i2.18771
Güler Tuluk , İbrahim Kepceoglu
This study aimed to investigate the relationship between pre-service teachers’ web pedagogical content knowledge and online information searching strategies. In accordance with the aim, the correlational comparative survey method is used. The participants of the study are 220 university students from a faculty of education of a state university. The data of the study is gathered by Turkish versions of “Teachers’ Self-Efficacy toward the Web Pedagogical Content Knowledge Scale” and “Online Information Searching Strategy Inventory”. Canonical correlation analysis is used to determine the relationship between these two scales. As a result of the study, 17.3% common variance is determined between web pedagogical content knowledge and online information searching strategies.
Volume: 8
Issue: 2
Page: 229-236
Publish at: 2019-06-01

Hybrid imperialistic competitive algorithm incorporated with hopfield neural network for robust 3 satisfiability logic programming

10.11591/ijai.v8.i2.pp144-155
Vigneshwer Kathirvel , Mohd. Asyraf Mansor , Mohd Shareduwan Mohd Kasihmuddin , Saratha Sathasivam
Imperialist Competitive algorithm (ICA) is a robust training algorithm inspired by the socio-politically motivated strategy. This paper focuses on utilizing a hybridized ICA with Hopfield Neural Network on a 3- Satisfiability (3-SAT) logic programming. Eventually the performance of the proposed algorithm will be compared to other 2 algorithms, which are HNN3SATES (ES) and HNN-3SATGA (GA). The performance shall be evaluated with the Root Mean Square Error (RMSE), Mean Absolute Error (MAE), Sum of Squares Error (SSE), Schwarz Bayesian Criterion (SBC), Global Minima Ratio and Computation Time (CPU time). The expected outcome will portray that the IC algorithm will outperform the other two algorithms in doing 3-SAT logic programming.
Volume: 8
Issue: 2
Page: 144-155
Publish at: 2019-06-01

Arabic named entity recognition using deep learning approach

10.11591/ijece.v9i3.pp2025-2032
Ismail El Bazi , Nabil Laachfoubi
Most of the Arabic Named Entity Recognition (NER) systems depend massively on external resources and handmade feature engineering to achieve state-of-the-art results. To overcome such limitations, we proposed, in this paper, to use deep learning approach to tackle the Arabic NER task. We introduced a neural network architecture based on bidirectional Long Short-Term Memory (LSTM) and Conditional Random Fields (CRF) and experimented with various commonly used hyperparameters to assess their effect on the overall performance of our system. Our model gets two sources of information about words as input: pre-trained word embeddings and character-based representations and eliminated the need for any task-specific knowledge or feature engineering. We obtained state-of-the-art result on the standard ANERcorp corpus with an F1 score of 90.6%.
Volume: 9
Issue: 3
Page: 2025-2032
Publish at: 2019-06-01

Stand-alone PV system with MPPT function based on fuzzy logic control for remote building applications

10.11591/ijpeds.v10.i2.pp842-851
Hussain A. Attia , Fernando delAma Gonzalo
Due to the limitations of reaching the grid utility to remote area, such as rural and/or countryside areas.  Stand-alone photovoltaic power systems represent good alternative that it can be adapted for electrical power delivering to these areas. In this paper, a new design of stand-alone solar system suitable for individual building application is presented. This study focuses on proposing a desired solar PV panels matrix arrangement and connection, in addition to presenting an accurate design of Buck-Boost DC-DC converter which controlled by fuzzy logic controller FLC. The controller guarantees the maximum Power Point working conditions and manipulates the fluctuation of the DC link voltage of the matrix due to the weather changing. The main system includes battery bank charger, single phase inverter, and passive power filter. This study addresses the design and performance analysis the DC side of the 7.85 kW PV system. The system performance is evaluated through MATLAB/Simulink results which reflected the promising indications as an effective system for rural individual stand-alone building applications. 
Volume: 10
Issue: 2
Page: 842-851
Publish at: 2019-06-01

Parameters affecting the selectivity of an electrical insecticide

10.11591/ijece.v9i3.pp1472-1478
Lahouaria Neddar , Samir Flazi
Using an electrical approach in the field of agriculture can be considered as one of the solutions in order to control harmful flying insects. This technique is based on the use of a bio and selective electrical insecticide whose principle consists in attracting insects by the light then get them electrocuted by an electrical discharge. Moreover, There are several parameters that affect the selectivity of electrical insecticide such as: the light, the most efficient, the inter electrode distance, where the insect is exterminated, and the electric current that passes through the insect’s body. In this paper, a simulation study was carried out concerning the distribution of the electric field between two electrodes in presence of particle conductor while focusing on the different body sizes. On the other hand, an experimental study was conducted on live locusts to determine the effect of electrical current on insect’s body taking into account the voltage and frequency. Finally, the results are discussed and analyzed in this paper.
Volume: 9
Issue: 3
Page: 1472-1478
Publish at: 2019-06-01

Hardware-in-the-loop simulator of wind turbine emulator using labview

10.11591/ijpeds.v10.i2.pp971-986
Himani Himani , Navneet Sharma
This paper describes the design and implementation of Hardware in the Loop (HIL) system D.C. motor based wind turbine emulator for the condition monitoring of wind turbines. Operating the HIL system, it is feasible to replicate the actual operative conditions of wind turbines in a laboratory environment. This method simply and cost-effectively allows evaluating the software and hardware controlling the operation of the generator. This system has been implemented in the LabVIEW based programs by using Advantech- USB-4704-AE Data acquisition card. This paper describes all the components of the systems and their operations along with the control strategies of WTE such as Pitch control and MPPT. Experimental results of the developed simulator using the test rig are benchmarked with the previously verified WT test rigs developed at the Durham University and the University of Manchester in the UK by using the generated current spectra of the generator. Electric subassemblies are most vulnerable to damage in practice, generator-winding faults have been introduced and investigated using the terminal voltage. This wind turbine simulator can be analyzed or reconfigured for the condition monitoring without the requirement of actual WT’s.
Volume: 10
Issue: 2
Page: 971-986
Publish at: 2019-06-01

RTL Implementation of image compression techniques in WSN

10.11591/ijece.v9i3.pp1750-1756
S. Aruna Deepthi , E. Sreenivasa Rao , M. N. Giri Prasad
The Wireless sensor networks have limitations regarding data redundancy, power and require high bandwidth when used for multimedia data. Image compression methods overcome these problems. Non-negative Matrix Factorization (NMF) method is useful in approximating high dimensional data where the data has non-negative components. Another method of the NMF called (PNMF) Projective Nonnegative Matrix Factorization is used for learning spatially localized visual patterns. Simulation results show the comparison between SVD, NMF, PNMF compression schemes. Compressed images are transmitted from base station to cluster head node and received from ordinary nodes. The station takes on the image restoration. Image quality, compression ratio, signal to noise ratio and energy consumption are the essential metrics measured for compression performance. In this paper, the compression methods are designed using Matlab.The parameters like PSNR, the total node energy consumption are calculated. RTL schematic of NMF SVD, PNMF methods is generated by using Verilog HDL.
Volume: 9
Issue: 3
Page: 1750-1756
Publish at: 2019-06-01

Automatic traffic light controller for emergency vehicle using peripheral interface controller

10.11591/ijece.v9i3.pp1788-1794
Norlezah Hashim , Fakrulradzi Idris , Ahmad Fauzan Kadmin , Siti Suhaila Jaapar Sidek
Traffic lights play such important role in traffic management to control the traffic on the road. Situation at traffic light area is getting worse especially in the event of emergency cases. During traffic congestion, it is difficult for emergency vehicle to cross the road which involves many junctions. This situation leads to unsafe conditions which may cause accident. An Automatic Traffic Light Controller for Emergency Vehicle is designed and developed to help emergency vehicle crossing the road at traffic light junction during emergency situation. This project used Peripheral Interface Controller (PIC) to program a priority-based traffic light controller for emergency vehicle. During emergency cases, emergency vehicle like ambulance can trigger the traffic light signal to change from red to green in order to make clearance for its path automatically. Using Radio Frequency (RF) the traffic light operation will turn back to normal when the ambulance finishes crossing the road. Result showed the design is capable to response within the range of 55 meters. This project was successfully designed, implemented and tested.
Volume: 9
Issue: 3
Page: 1788-1794
Publish at: 2019-06-01

Adaptive real time traffic prediction using deep neural networks

10.11591/ijai.v8.i2.pp107-119
Parinith R Iyer , Shrutheesh Raman Iyer , Raghavendran Ramesh , Anala M R , K.N. Subramanya
The ever-increasing sale of vehicles and the steady increase in population density in metropolitan cities have raised many growing concerns, most importantly commute time, air and noise pollution levels. Traffic congestion can be alleviated by opting adaptive traffic light systems, instead of fixedtime traffic signals. In this paper, a system is proposed which can detect, classify and count vehicles passing through any traffic junction using a single camera (as opposed to multi-sensor approaches). The detection and classification are done using SSD Neural Network object detection algorithm. The count of each class (2-wheelers, cars, trucks, buses etc.) is used to predict the signal green-time for the next cycle. The model selfadjusts every cycle by utilizing weighted moving averages. This system works well because the change in the density of traffic on any given road is gradual, spanning multiple traffic stops throughout the day.
Volume: 8
Issue: 2
Page: 107-119
Publish at: 2019-06-01

Optimal remote access trojans detection based on network behavior

10.11591/ijece.v9i3.pp2177-2184
Khin Swe Yin , May Aye Khine
RAT is one of the most infected malware in the hyper-connected world. Data is being leaked or disclosed every day because new remote access Trojans are emerging and they are used to steal confidential data from target hosts. Network behavior-based detection has been used to provide an effective detection model for Remote Access Trojans. However, there is still short comings: to detect as early as possible, some False Negative Rate and accuracy that may vary depending on ratio of normal and malicious RAT sessions. As typical network contains large amount of normal traffic and small amount of malicious traffic, the detection model was built based on the different ratio of normal and malicious sessions in previous works. At that time false negative rate is less than 2%, and it varies depending on different ratio of normal and malicious instances. An unbalanced dataset will bias the prediction model towards the more common class. In this paper, each RAT is run many times in order to capture variant behavior of a Remote Access Trojan in the early stage, and balanced instances of normal applications and Remote Access Trojans are used for detection model. Our approach achieves 99 % accuracy and 0.3% False Negative Rate by Random Forest Algorithm.
Volume: 9
Issue: 3
Page: 2177-2184
Publish at: 2019-06-01

Efficiency enhancement of solar PV powered micro-integrated high frequency isolated vehicle battery charging converter

10.11591/ijpeds.v10.i2.pp953-960
Jawahar Marimuthu , Jayasankar V , Karthik Kumar K , Edward Rajan S
This Paper proposes a method to improve the efficiency of charging the battery used in autonomous electric vehicle powered by foldable roof-mounted solar photovoltaic (PV) generation system. The conventional vehicle battery charging application from solar PV consists of a boost converter in the frontend followed by a full bridge converter with discrete switches. Here an attempt is made on the total scheme with a micro integrated package to have better conversion efficiency with high power density. The total system is controlled digitally incorporating zero voltage transition (ZVT) in the full bridge conversion. A typical specification with a power level of 300-400 W was targeted and achieved.
Volume: 10
Issue: 2
Page: 953-960
Publish at: 2019-06-01

Robust coordinated control using backstepping of flywheel energy storage system and DFIG for power smoothing in wind power plants

10.11591/ijpeds.v10.i2.pp1110-1122
Mohamed Nadour , Ahmed Essadki , Tamou Nasser , Mohammed Fdaili
This paper presents a robust coordinated control of a flywheel energy storage system (FESS) and a doubly fed induction generator (DFIG) based wind energy conversion system (WECS), used to smooth the wind induced output power fluctuations. The overall system control combines field oriented control schemes and nonlinear backstepping approach applied first, to the machine side converter (MSC) to regulate the DFIG active and reactive power in order to ensure maximum power point tracking (MPPT) operation and a unity power factor at the point of common coupling (PCC). Then, to the grid side converter (GSC) to maintain a constant DC bus voltage. Finally, to the flywheel side converter (FSC) in way that allows the storage unit to serve as a buffer that stores energy in the case of excess power and retrieves it back into the output in the case of power deficiency. A numerical simulation using Matlab/Simulink software validates the effectiveness of the proposed control strategies in terms of dynamic response, improvement of generated power quality and robustness against parametric variation.
Volume: 10
Issue: 2
Page: 1110-1122
Publish at: 2019-06-01

The effects of hearing deficits on student self-perceptions of social belonging, difficulty at school, and self-image

10.11591/ijere.v8i2.19632
Lindsy Cox , Brittany Ruffo , Julian Laird , Benjamin P Schade , Karen H Larwin
A paucity of research exists that examines how well hearing-impaired students function in the primary and secondary grades when attending a general education setting. The research that does exists to suggest that issues of poor self-perception, challenges regarding a sense of belonging, and self-image may be amplified for the non-hearing student. The current investigation examines the self-reported feelings of the hearing-impaired students relative to the student with no identified hearing difficulties. Results suggest that while social belonging may be a problem for the hearing-impaired students relative to their hearing peers, no differences were found on the responses associate with self-image or trouble at school.
Volume: 8
Issue: 2
Page: 280-285
Publish at: 2019-06-01
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