Articles

Access the latest knowledge in applied science, electrical engineering, computer science and information technology, education, and health.

Advanced Search
Filter Icon

Filters article

Years

FAQ Arrow
Single Year
Range Year
0
0

Source Title

FAQ Arrow

Authors

FAQ Arrow

29,939 Article Results

Experimental design for an enhanced parametric modeling of supercapacitor equivalent circuit model

10.11591/ijeecs.v23.i1.pp63-74
Ali Mohsen Alsabari , M. K Hassan , Azura CS , Ribhan Zafira
The modelling of the supercapacitor (SC) plays an important role for the industrial application with many model representations such as electrical, chemical, and electrochemical models. Among one of those models are the equivalent circuit model which has been used to describe the real-time (charging/discharging) operation characteristics of the SC. Apart of its mathematical complexity, the time-consuming experimentally is also a real challenge for obtaining the internal parameters values for the SC. Choices of test equipment with a structure design of experiment also play important criteria affect the accuracy of the model. This research emphasis on a structured of experimental design for SC modelling by using Neware battery tester. The experimental exercise to attain internal parameters of the SC are described and discussed in the paper. The findings were benchmarked with an empirical model of previous researchers. The terminal voltage of SC was validated via experiment with maximum relative error of 0.045%. The model successfully reproduce the SC dynamic behavior during the charge/discharge phase which indicates the proposed method and model accuracy.
Volume: 23
Issue: 1
Page: 63-74
Publish at: 2021-07-01

Password authentication scheme based on smart card and QR code

10.11591/ijeecs.v23.i1.pp140-149
Mushtaq Hasson , Ali A. Yassin , Abdulla J. Yassin , Abdullah Mohammed Rashid , Aqeel A. Yaseen , Hamid Alasadi
As a hopeful computing paradigm, cloud services are obtainable to end users based on pay-as-you-go service. Security is represented one of the vital issues for the extended adoption of cloud computing, with the object of accessing several cloud service providers, applications, and services by using anonymity features to authenticate the user. We present a good authentication scheme based on quick response (QR) code and smart card. Furthermore, our proposed scheme has several crucial merits such as key management, mutual authentication, one-time password, user anonymity, freely chosen password, secure password changes, and revocation by using QR code. The security of proposed scheme depends on crypto-hash function, QR-code validation, and smart card. Moreover, we view that our proposed scheme can resist numerous malicious attacks and are more appropriate for practical applications than other previous works. The proposed scheme has proved as a strong mutual authentication based on burrows-abadi-needham (BAN) logic and security analysis. Furthermore, our proposed scheme has good results compared with related work.
Volume: 23
Issue: 1
Page: 140-149
Publish at: 2021-07-01

Balanced islanding detection of integrated DG with phase angle between voltage and current

10.11591/ijeecs.v23.i1.pp32-40
M Krishna Goriparthy , B Geetha Lakshmi
The integration of renewable energy systems is enhancing in daily life for supplying the global demand for electric energy. The concerning problem with the integration of such distributed generation (DG) is islanding. It may damage the consumers and equipment. As per the IEEE 1547 DG integration specifications it must be identified in 2 seconds. In this article a novel passive recognition approach occupying on the rate of change of phase angle between positive sequence voltage and current is (RCPABPSVAC) is proposed. The existing passive methods failed to detect balanced and low power mismatch islanding cases. The suggested approach can do it and strongly classifies the non islanding situations with the islanding situations. The simulations are implemented in MATLAB/Simulink environment.
Volume: 23
Issue: 1
Page: 32-40
Publish at: 2021-07-01

Numerical comparison between DPSK 33, DPSK 66 and duo binary in WOC system

10.11591/ijeecs.v23.i1.pp247-257
Mustafa H. Ali , Hazim M. Ali , Tariq A. Hassan
OWC systems have turned into a state-of-the-art technology because of their superior performance uniqueness and its innumerable characteristic as compared to its RF. One of the OWC application is inter-satellite wireless optical communication (Is-WOC), this framework can be improved by using different ways such as advanced modulation formats and aperture diameter. We demonstrate an analysis based on the aperture diameter effect in transmission of single channel with 40 Gb/s Is-WOC system using three different modulation methods, differential phase-shift keying (DPSK) with a duty ratio to 66% and 33% and duobinary. Choosing these three modulations from various modulation format is done depending on the advantage they provide where the DPSK gives to fiber nonlinearity a powerful robustness and less susceptible to SPM and XPM and for system requirements of dispersion compensation in duobinary, it provides higher chromatic dispersion tolerance mitigate. The result shows the effect of different transmitter aperture diameter (from 2 to 20 cm) for a constant distance 200 km accomplished by quality factor and minimum BER. We conclude there is a great loss in the small aperture diameter, even in the presence of best modulation format, therefore as the aperture diameter increase the Q-factor increase, but some increased rise is linear and the other is changing from linear to non-linear in a fixed Q-factor point equal to 5.63.
Volume: 23
Issue: 1
Page: 247-257
Publish at: 2021-07-01

Payload and quality augmentation using steganographic optimization technique based on edge detection

10.11591/ijeecs.v23.i1.pp529-539
Mafaz Alanezi , Iman Subhi Mohammed Altaay , Saja Younis Hamid Malla'aloo
Information security is one of the most significant processes that must be taken into account when confidentially transferring information. This paper introduces a steganography technique using the edge detection method. It focused on three basic and important aspects’ payload, quality and security. Well-known edge detectors were used to generate as many edge pixels as possible to hide data and achieve the highest payload. The least significant bit (LSB) algorithm has been improved by extending the bits used to embed between 2-4 bits in smooth and sharp areas. To increase security, the transaction between the two parties is based on dividing the key and the cover image into several parts and agreeing on the type of edge detection.The experiments achieved the maximum load, for instance with a fuzzy edge detector, at first, embedding in 4 bitplanes if edge pixel and in 2 bitplanes if non-edge pixel, the peak signal-to-noise ratio (PSNR) increased from 43.580to 45.790. At second, embedding in 2 bitplanes if edge pixel, and in 4 bitplanes if non-edge pixel, the PSNR decreased between 38.433-41.593. The suggested scheme achieved a high pay load to embed in the cover image and according to human perception, it preserved the nature of the original image.
Volume: 23
Issue: 1
Page: 529-539
Publish at: 2021-07-01

Numerical solution of Drinfeld-Sokolov-Wilso system by using modified Adomian decomposition method

10.11591/ijeecs.v23.i1.pp590-599
Badran Jasim Salim , Oday Ahmed Jasim , Zeiad Yahya Ali
In this paper, the modified Adomian decomposition method (MADM) is usedto solve different types of differential equations, one of the numerical analysis methods for solving non linear partial differential equations (Drinfeld–Sokolov–Wilson system) and short (DSWS) that occur in shallow water flows. A Genetic Algorithm was used to find the optimal value for the parameter (a). We numerically solved the system (DSWS) and compared the result to the exact solution. When the value of it is low and close to zero, the MADM provides an excellent approximation to the exact solution. As well as the lower value of leads to the numerical algorithm of (MADM) approaching the real solution. Finally, found the optimal value when a=-10 by using the Genetic Algorithm (G-MADM). All the computations were carried out with the aid of Maple 18 and Matlab to find the parameter value (a) by using the genetic algorithm as well as to figures drawing. The errors in this paper resulted from cut errors and mean square errors.
Volume: 23
Issue: 1
Page: 590-599
Publish at: 2021-07-01

Blood donors appointment booking and managing system using PC and mobile web browsers in current pandemic (COVID-19)

10.11591/ijeecs.v23.i1.pp566-574
Mustafa Abdulsatar Noori , Sura Abed Sarab Hussien , Thair Abed Sarab Al-Janabi
Blood donation is the main source of blood resources in the blood banks which is required in the hospitals for everyday operations and blood compensation for the patients. In special cases, the patients require fresh blood for compensation such as in the case of major operations and similar situations. Moreover, plasma transfusions are vital in the current pandemic of coronavirus disease (COVID-19). In this paper, we have proposed a donation system that manages the appointments between the donors and the patient in the case of fresh blood donation is required. The website is designed using the Bootstrap technology to provide suitable access using the PC or the smart phones web browser. The website contains large database including information about the donors and their blood group, available time, and other personal information to facilitate the donation process. This system is designed with unlimited abilities to be used by any hospital, blood bank, or individuals to manage the donation process with no constrains.
Volume: 23
Issue: 1
Page: 566-574
Publish at: 2021-07-01

Modelling consumer’s intention to use IoT devices: role of technophilia

10.11591/ijeecs.v23.i1.pp612-620
Nusrat Jahan , Md. Abu Hosen Shawon , Farzana Sadia , Dilara Khanom Nitu , Md. Enam Kobir Ribon , Imran Mahmud
The present study has been conducted to examine whether skills and general technology-related value (GTV) required to operate the internet of things (IoT). This study also investigates is there any effect of technophilia to adopt IoT. The research method we use in this quantitative study was the sample survey. For investigating results, 352 surveys were conducted where 26 surveys were led through online and 292 surveys were distributed to different age groups. The proposed model was examined using partial least square structural equation model where the results revealed that IoT skills and General knowledge on technology directly contribute to technophilia which covers behavioural, emotional, and cognitive aspects. That is if people have a fascination for new technologies then they are willing to use IoT.
Volume: 23
Issue: 1
Page: 612-620
Publish at: 2021-07-01

Vehicle tracker system design based on GSM and GPS interface using arduino as platform

10.11591/ijeecs.v23.i1.pp258-264
Narcisa T. Morallo
Global positioning system (GPS) tracker is an innovative technology that is able to track the position of vehicle using global satellite system. In this paper, vehicle tracker system design that is derived from global positioning system and global system for mobile communication (GSM) interface with the use of Arduino Uno board as platform is proposed and presented. Technology in Arduino, GSM, and GPS is studied.GPS module receives the coordinates from the satellite. The GPS coordinates are sent to users in the form of SMS through SIM900A GSM module. By using Google Maps, the exact location of the vehicle can be located. Arduino microcontroller is the gateway to all GPS and GSM hardware and software communication in the system. The design represents that GSM and GPS interface with the use of Arduino Uno board as platform can really make vehicle tracking more efficient and convenient since it can work in any weather conditions and provide real-time location of objects. Automatic display of the coordinate’s geographical location in a map should be integrated in future design.
Volume: 23
Issue: 1
Page: 258-264
Publish at: 2021-07-01

Vibration harvesting integrated into vehicle suspension and bodywork

10.11591/ijeecs.v23.i1.pp188-196
Souad Touairi , Mustapha Mabrouki
This work proposes a new piezoelectric transducer system with four freedoms of movement modelled and evaluated by mechatronic techniques. The proposed modelling techniques (finite element and bond graph) were performed in a 20-Sim framework attached to the ANSYS software. The established harvester system has the ability to increase the driver's comfort when travelling on several types of road surfaces. The piezoelectric harvester is designed to investigate and provide the health requirement and ride comfort of the vehicle's drives on random road surfaces. The simulation results affirm that the improved piezoelectric transducer arrangement is more productive for various aspects. The power recovery is significantly enhanced as well as the driving comfort on the three road categories. Finally, the harvestable power amount is highlighted and is graphically discussed for several specific applications.
Volume: 23
Issue: 1
Page: 188-196
Publish at: 2021-07-01

Temporal analysis of air pollutants in the most affected monsoon region

10.11591/ijeecs.v23.i1.pp229-236
Omar Kairan , Nur Nasehah Zainudin , Nurul Hasya Mohd Hanafiah , Nur Emylia Arissa Mohd Jafri , Fukayhah Fatiha @Suhami , Mohd Firdaus Mustapha
Air pollution has become an issue at all rates in the world. In Malaysia, there is a system is known as air quality index (API) used to indicate the overall air quality in the country where the air pollutants include or the new ambient air quality standard are sulphur dioxide (SO2), nitrogen dioxide (NO2), carbon monoxide (CO), ozone (O3) and particulate matter with size less than 10 (PM10). The concentration levels of the air pollutants were said to be affected by the monsoon changes. Therefore, this study is conducted to examine the existence of temporal variations of each air pollutant then identify the differences of each air pollutants concentration in temporal variations. This study uses secondary data where data that has been retrieved from the Department of Environment (DOE) where it is data of air pollution specifically for Kota Bharu, kelantan records. Hierarchical agglomerative cluster analysis was conducted to group monthly air quality. As a conclusion, the study can conclude that the five air pollutants grouped into several different monthly clusters mostly representing the two main monsoon seasons. Mostly air pollutant varied accordingly towards the monsoon season. During the southwestern monsoon, air pollutant concentration tends to higher compare to the northeastern monsoon with mostly due to meteorological factors.
Volume: 23
Issue: 1
Page: 229-236
Publish at: 2021-07-01

Optimising monthly tilt angles of solar panels using particle swarm optimisation algorithm

10.11591/ijeecs.v23.i1.pp75-89
Namruta S. Kanianthara , Swee Peng Ang , Ashraf Fathi Khalil Sulayman , Zainidi bin Hj. Abd. Hamid
This paper presents an intelligent computational method using the PSO (particle swarm optimisation) algorithm to determine the optimum tilt angle of solar panels in PV systems. The objective of the paper is to assess the performance of this method against conventional methods of determining the optimum tilt angle. The method presented here can be used to determine the optimum tilt angle at any location around the world. In this paper, it was applied to Brunei Darussalam, and succeeded in computing monthly optimum tilt angles, ranging from 34.7ᵒ in December to -26.7ᵒ in September. Results showed that changing the tilt angle every month, as determined by the PSO algorithm, increased annual yield by: (i) 5.94%, compared to keeping it fixed at 0ᵒ, (ii) 8.65%, compared to Lunde’s method and (iii) 17.31%, compared to Duffie and Beckman’s method. Benchmark test functions were used to compare and evaluate the performance of the PSO algorithm with the artificial bee colony (ABC) algorithm, another metaheuristic algorithm. The tests revealed that the PSO algorithm outperformed the ABC algorithm, exhibiting lower root mean square error and standard deviation, better convergence to the global minimum, more accurate location of the global minimum, and faster execution times.
Volume: 23
Issue: 1
Page: 75-89
Publish at: 2021-07-01

Bangla numerical sign language recognition using convolutional neural networks (CNNs)

10.11591/ijeecs.v23.i1.pp405-413
F. M. Javed Mehedi Shamrat , Sovon Chakraborty , Md. Masum Billah , Moumita Kabir , Nazmus Shakib Shadin , Silvia Sanjana
The amount of deaf and mute individuals on the earth is rising at an alarmingrate. Bangladesh has about 2.6 million people who are unable to interact with the community using language. Hearing-impaired citizens in Bangladesh use Bangladeshi sign language (BSL) as a means of communication. In this article,we propose a new method for Bengali sign language recognition based on deep convolutional neural networks. Our framework employs convolutional neural networks (CNN) to learn from the images in our dataset and interpret hand signs from input images. Checking their collections of ten indications (we usedten sets of images with 31 distinct signs) for a total of 310 images. The proposed system takes snap shots from a video by using a webcam with applying a computer vision-based approach. After that, it compares those photos to a previously trained dataset generated with CNN and displays the Bengali numbers (০-৯). After estimating the model on our dataset, weobtained an overall accuracy of 99.8%. We want to streng then things as far aswe can to make silent contact with the majority of society as simple asprobable.
Volume: 23
Issue: 1
Page: 405-413
Publish at: 2021-07-01

Development of a model for evaluating the effectiveness of innovative startups based on information cycles and using neural networks

10.11591/ijeecs.v23.i1.pp396-404
Morozov Viktor , Kolomiiets Anna , Mezentseva Olga
An integrated approach to the creation and development of innovative startup projects in the field of information technology is considered. To conduct research, the authors proposed a model of information cycles of startup projects based on the creation of an information model of such projects. At the same time there are dynamic processes of changes in the parameters of the model, which are turbulent in nature and require the use of tools and methods of artificial intelligence for research. The key areas of knowledge of such influence are defined. The mathematical model of processes of management of development of IT startups on the basis of creation and development of a difficult IT product, taking into account influences of environments of the project is constructed, the basic characteristics are allocated and parameters are defined. To do this, the construction of predictive models is proposed to be carried out by modified Demarc trends, the method of self-organization and the neural network. The modeling of the main objective functions of the mathematical model of these processes is performed. The analysis of the received results is carried out and the conclusions are made.
Volume: 23
Issue: 1
Page: 396-404
Publish at: 2021-07-01

A novel compact dual band RFID handheld reader antenna for microwave ISM band application

10.11591/ijeecs.v23.i1.pp321-329
Wahiba Belgacem , Miloud Bousahla , Sidi Mohammed Meriah
This paper presents a new design of dual band RFID reader antenna for ISM-band industrial science and medical applications at 2.4 GHz and 5.8 GHz. Theantenna is designed and physically built using FR4 substrate and taking a 1.5 thickness, 4.3 relative permittivity and 0.025 loss tangents. Different slots havebeen introduced to reduce the antenna dimensions and to achieve the dual bandfor microwave ISM band application. The dimension of the proposed antenna is 34 × 34 × 1.5 mm3, which it could be easily integrated into RFID readers.Numerical simulations have been performed usingcomputer simulationtechnology (CST) Microwave Studio software. A parametric study wasinvestigated in order to show the effect of slots variation and to obtain the desiredfunctional characteristics. Experimental results show a good agreement withresults obtained by simulations. A satisfactorily omnidirectional for the radiationpatterns across the antenna operation bands was obtained.
Volume: 23
Issue: 1
Page: 321-329
Publish at: 2021-07-01
1 2 3
...
1995 1996
Show 946 of 1996

Discover Our Library

Embark on a journey through our expansive collection of articles and let curiosity lead your path to innovation.

Explore Now
Library 3D Ilustration