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29,922 Article Results

Design and implementation of an effective web-based hybrid stemmer for Odia language

10.11591/ijaas.v9.i1.pp12-19
Gouranga Charan Jena , Siddharth Swarup Rautaray
Stemmer is used for reducing inflectional or derived word to its stem. This technique involves removing the suffix or prefix affixed in a word. It can be used for information retrieval system to refine the overall execution of the retrieval process. This process is not equivalent to morphological analysis. This process only finds the stem of a word. This technique decreases the number of terms in information retrieval system. There are various techniques exists for stemming. In this paper, a new web-based stemmer has been proposed named as “Mula” for Odia Language. It uses the Hybrid approach (i.e. combination of brute force and suffix removal approach) for Odia language. The new born stemmer is both computationally faster and domain independent. The results are favourable and indicate that the proposed stemmer can be used effectively in Odia Information Retrieval systems. This stemmer also handles the problem of over-stemming and under-stemming in some extend.
Volume: 9
Issue: 1
Page: 12-19
Publish at: 2020-03-01

DTC-ANN-2-level hybrid by neuronal hysteresis with mechanical sensorless induction motor drive using KUBOTA observer

10.11591/ijpeds.v11.i1.pp34-44
Dris Ahmed , Bendjebbar Mokhtar , Belaidi Aek
In this paper, DTC is applied for two-level inverter fed IM drives based on neuronal hysteresis comparators and The Direct Torque Control (DTC) is known to produce quick and robust response in AC drive system. However, during steady state, torque, flux and current ripple. An improvement of electric drive system can be obtained using a DTC method based on ANNs which reduces the torque and flux ripples, the estimated the rotor speed using the KUBOTA observer method based on measurements of electrical quantities of the motor. The validity of the proposed methods is confirmed by the simulation results.The THD (Total Harmonic Distortion) of stator current, torque ripple and stator flux ripple are determined and compared with conventional DTC control scheme using Matlab/Simulink environment.
Volume: 11
Issue: 1
Page: 34-44
Publish at: 2020-03-01

Test, measurement, and evaluation: Understanding and use of the concepts in education

10.11591/ijere.v9i1.20457
Dickson Adom , Jephtar Adu-Mensah , Dennis Atsu Dake
Test, measurement, and evaluation are concepts used in education to explain how the progress of learning and the final learning outcomes of students are assessed. However, the terms are often misused in the field of education, especially in Ghana. The objective of the study was to thoroughly explain the concepts to assist educationists and researchers in the field of education to better apply them in educational discourses. The study also suggests best practices in setting test items in measuring students’ learning outcomes while showing policy directions to assist educationists and researchers in the field of educational evaluation.
Volume: 9
Issue: 1
Page: 109-119
Publish at: 2020-03-01

Enhancement of real-time IoT-based air quality monitoring system

10.11591/ijpeds.v11.i1.pp390-397
Wei Jian Ng , Zuraini Dahari
Air pollution is one of the biggest threat for the environment and the human’s health. The monitoring of air pollution based on several atmospheric pollutants is becoming critical in most countries including Malaysia. This paper presents a development and enhancement features of real-time Internet of Things (IoT)-based environmental monitoring system for air quality. The proposed system will be beneficial to monitor the real-time data for a specific set of air quality parameters such as temperature, humidity and concentration of carbon monoxide, liquified petroleum gas (LPG) and smoke. An alarm system will be triggered if the concentration of carbon monoxide exceeds 50 ppm. Users can use their smartphone to view these data via Wi-Fi by installing an application called “AirProp”. Based on the collected data, this paper also analyses other contributing factors such as time and traffic condition on the temperature, humidity and concentration of pollutant gases at different locations. The advantage of the real-time system is it serves as the data base platform to store data up to certain duration of time. The data can be further analysed and leveraged by governments and researchers to mitigate air pollution.
Volume: 11
Issue: 1
Page: 390-397
Publish at: 2020-03-01

Online geocode in postal address using GPS with synchronous database accessing

10.11591/ijeecs.v17.i3.pp1487-1492
Mohammad Riyadh R. Sharba , Hakim Adil Kadhim , Salam A. W. Al-Abassi , Nabeel Salih Ali
Postal addressing information is a crucial issue in any organization for business targets, especially in developed countries. Thus, required to convert postal address data to an absolute value like latitude and longitude coordinates by a procedure called geocoding. In this paper, discuss how to make long coordinates into simple geocode via maps services. Besides, conduct a smartphone application to save the geocode with details information to be a GIS for the future used by end-users. The information includes address name, type, and phone number as well as a small note. The app can search for a particular location like hospitals, schools, restaurants, etc.
Volume: 17
Issue: 3
Page: 1487-1492
Publish at: 2020-03-01

Dual axis solar tracker with IoT monitoring system using arduino

10.11591/ijpeds.v11.i1.pp451-458
Siti Amely Jumaat , Mohamad Nur Aiman Mohd Said , Clarence Rimong Anak Jawa
This project aims to develop dual axis solar tracker with IOT monitoring system using Arduino. Generally, solar energy is the technology to get useful energy from sunlight. Solar energy has been used in many traditional technologies over the centuries and has been widely used in the absence of other energy supplies. Its usefulness is widespread when awareness of the cost of the environment and the supply is limited by other energy sources such as fuel. The solar tracking system is the most effective technology to improve the efficiency of solar panels by tracking and following the sun's movement. With the help of this system, solar panels can improve the way of sunlight detection so that more electricity can be collected as solar panels can maintain a sunny position. Thus the project discusses the development of two-axis solar-tracking developers using Arduino Uno as main controller the system. For develops this project, four light-dependent resistors (LDRs) have been used for sunlight detection and a maximum light intensity. Two servo motors have been used to rotate the solar panel according to the sun's light source detected by the LDR. Next a WIFI ESP8266 device is used as an intermediary between device and IOT monitoring system. The IOT monitoring system is a website that functions to store data. The efficiency of this system has been tested and compared with a single axial solar tracker. As a result, the two-axis solar tracking system generates more power, voltage and current.
Volume: 11
Issue: 1
Page: 451-458
Publish at: 2020-03-01

Symmetrical high voltage gain half-bridge inverter based double-Y-source networks with reduced voltage stress

10.11591/ijpeds.v11.i1.pp515-522
Hussain Sayed , Oday A Ahmed , Dhari Y Mahmood , Kanaan A. Jalal , Waleed H. Habeeb
A single-stage symmetrical high voltage gain half-bridge (HB) DC-AC converter is proposed in this paper. Using two Y-source impedance networks, the following key features are utilized from the proposed topology: single stage inverter with very high voltage gain compared to conventional HB inverter, symmetrical output voltage waveform, low voltage stress across the passive components because it is distributed across two impedance networks, and only two switching devices are needed for the converter. Furthermore, important merit of the proposed topology is that the current drawn by the Y-coupled inductors is symmetrical around the X-axis which helps to prevent the Y-network cores from reaching the saturation state. And the last compelling feature is a virtual neutral point for the load connection is inherited in the proposed double Y-source impedance networks converter with no need for DC-Link capacitors. For low voltage sources such as photovoltaic (PV) and fuel cell, the converter is designed to achieve continuous input current operation. The operation modes and principles of the inverter are analyzed and discussed deeply in this paper. A detailed mathematical equations system is derived and verified for the presented converter. Finally, PSpice simulation tools are used to simulate the converter and verify the derived mathematical formulas.
Volume: 11
Issue: 1
Page: 515-522
Publish at: 2020-03-01

Wireless power transfer framework for minirobot based on resonant inductive coupling and impedance matching

10.11591/ijpeds.v11.i1.pp317-325
Kin Yun Lum , Jyi-Shyan Chow , Kah Haur Yiauw
Minirobots which are under the field of miniature robotics, have a dimension of a few centimetres to even a few millimetres. Conventionally, these small sized robots are usually powered up by batteries. The batteries can take up a lot of space and result in a bulky system. Isolating the energy storage components from the robot itself can provide a good alternative to further down sized the robot. This can be done with the incorporation of wireless power transfer (WPT) technology. However, studies of small-size WPT are usually reported with poor efficiency. The objective of this paper is to present an efficient wireless power transfer framework for the minirobot by employing the resonant inductive coupling together with impedance matching technique. The theory and design process will be discussed. Then, a simple prototyping experiment was conducted to verify the proposed framework. Result showed 35% transfer efficiency had been achieved on a transmission distance of 0.5 cm. The proposed framework had also successfully powered a 4 watts minirobot prototype at about 16% transfer efficiency where its receiver coil was located 3.5 cm above the transmitter coil.
Volume: 11
Issue: 1
Page: 317-325
Publish at: 2020-03-01

Design and implementation of high frequency induction heating with LLC resonant load matching using ELTA

10.11591/ijpeds.v11.i1.pp178-188
Suganthi Karuppusamy , Sunandhitha V , Suraj R , Roja T S , Sundararaman K
Induction heating is a non-contact method of producing heat which can be used to perform various processes like hardening, annealing, tempering, welding, brazing, melting, forging, etc. This paper discusses the design and implementation of induction heating on a given work-piece, using an LLC resonant circuit and a transformer for impedance matching, so as to transfer a maximum power of 5KW to the load. The load parameters are found out using ELTA software which calculates the values based on the dimensions of the work piece, operating frequency and temperature. The inverter used is based on SiC MOSFETs which minimizes the losses at high frequencies and high temperatures. The theoretical and simulated results from MATLAB are analysed and verified.  The hardware is implemented for the LLC circuit with transformer and the results are presented.
Volume: 11
Issue: 1
Page: 178-188
Publish at: 2020-03-01

PI controller for DC motor speed realized with simulink and practical measurements

10.11591/ijpeds.v11.i1.pp119-126
Mohammed A. Ibrahim , Ali N. Hamoodi , Bashar M. Salih
This article describes the methodology of speed control by understanding control method of DC motor, definitely, armature and field resistances with additional to armature voltage control methods. The speed of DC motor is controlled PI controller as donor in this work. Using Matlab simulation and practical measurements, Terco DC motor speed control is achieved in this work. The results that obtained from Matlab simulation circuit is appeared approximately similar that obtained by practical connection. 
Volume: 11
Issue: 1
Page: 119-126
Publish at: 2020-03-01

Differential game theory with FPA optimization in multi-area power system

10.11591/ijpeds.v11.i1.pp302-308
S. Khadarvali , V. Madhusudhan , R. Kiranmayi
The distribution generation penetration increases due to the increased need of power. These penetration causes problem of frequency deviations. In this paper the in multi-area power system the combination of renewable energy resources is proposed. Here the area 1 & area 2 are thermal power plant. Hydro power generation plant is taken in area-3 & area-4. Renewable energy system is considered in area-5. Here the cyber security attack is taken as change in power in the entire area. This can make the power block out or wrong data entry. Here differential game theory-based problem formulation is done. The PI controller and differential game theory with flower pollination are compared for performance of fast response. The MATLAB 2017b is used for building the areas and algorithm
Volume: 11
Issue: 1
Page: 302-308
Publish at: 2020-03-01

Prediction of energy consumption using recurrent neural networks (RNN) and nonlinear autoregressive neural network with external input (NARX)

10.11591/ijeecs.v17.i3.pp1215-1223
Wan Muhammad Zafri Wan Yahaya , Fadhlan Hafizhelmi Kamaru Zaman , Mohd Fuad Abdul Latip
Recurrent Neural Networks (RNN) and Nonlinear Autoregressive Neural Network with External Input (NARX) are recently applied in predicting energy consumption. Energy consumption prediction for depth analysis of how electrical energy consumption is managed on Tower 2 Engineering Building is critical in order to reduce the energy usage and the operational cost. Prediction of energy consumption in this building will bring great benefits to the Faculty of Electrical Engineering UiTM Shah Alam. In this work, we present the comparative study on the performance of prediction of energy consumption in Tower 2 Engineering Building using RNN and NARX method. The model of RNN and NARX are trained using data collected using smart meters installed inside the building. The results after training and testing using RNN and NARX show that by using the recorded data we can accurately predict the energy consumption in the building. We also show that RNN model trained with normalized data performs better than NARX model.
Volume: 17
Issue: 3
Page: 1215-1223
Publish at: 2020-03-01

IoT based facial recognition door access control home security system using raspberry pi

10.11591/ijpeds.v11.i1.pp417-424
Syafeeza Ahmad Radzi , M.K. Mohd Fitri Alif , Y. Nursyifaa Athirah , A. S. Jaafar , A. H. Norihan , M. S. Saleha
The home security system has become vital for every house. Previously, most doors can be open by using traditional ways, such as keys, security cards, password or pattern. However, incidents such as a key loss has led to much worrying cases such as robbery and identity fraud. This has become a significant issue. To overcome this problem, face recognition using deep learning technique was introduced and Internet of Thing (IoT) also been used to perform efficient door access control system. Raspberry Pi is a programmable small computer board and used as the main controller for face recognition, youth system and locking system. The camera is used to capture images of the person in front of the door. IoT system enables the user to control the door access.
Volume: 11
Issue: 1
Page: 417-424
Publish at: 2020-03-01

Preservice Turkish language teachers’ attitudes toward Anatolian dialects

10.11591/ijere.v9i1.20471
İzzet Şeref
This study aimed to reveal preservice Turkish Language teachers' attitudes toward the use of Anatolian dialects in education in terms of their genders and years at university. The participants of the study are 201 preservice teachers who are 1st, 2nd, 3rd and 4th-year students studying at Turkish Language Teaching undergraduate program at Tokat Gaziosmanpasa University in the 2017-2018 academic year. The study is a correlational survey employing a descriptive research method. The data of the study were collected employing a scale named Attitude Scale Toward Anatolian Dialects. Using SPSS 22.0, t-Test for independent samples and One-Way ANOVA for independent samples were employed to analyze the data.  As a result of the study, it is found out that there is a significant difference between the attitudes toward Anatolian dialects in favor of males; and being only between 2nd and 4th-year students, there is a significant difference between the attitudes in favor of 2nd-year students.
Volume: 9
Issue: 1
Page: 93-99
Publish at: 2020-03-01

Closed-loop speed control of switched reluctance motor drive fed from novel converter with reduced number of switches

10.11591/ijpeds.v11.i1.pp189-199
Ashok Kumar Kolluru , Malligunta Kiran Kumar
This paper presents a novel converter configuration with fewer for switched reluctance motor (SRM) drive. The proposed novel converter insists for less number of switches compared to conventional asymmetrical type of converter configuration for switched reluctance motor. Switch count reduction in converter reduces the losses, volume of heat sink, and number of gate drive circuits and thereby the performance of the system. Closed loop speed control of switched reluctance motor fed from proposed novel converter topology was presented in this paper. Performance of closed loop operation is compared to open loop system. Further the proposed converter for SRMT is evaluated with loaded condition and comparative analysis of no-load and loaded SRM is presented. The model presented is developed and the results are analyzed using MATLAB/SIMULINK software. Closed loop performance of proposed novel converter fed switched reluctance motor drive is verified at fixed speed and variable speed conditions.
Volume: 11
Issue: 1
Page: 189-199
Publish at: 2020-03-01
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