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28,451 Article Results

Electromagnetic Radiation (EMR) of Human Body Before and After Jogging

10.11591/ijeecs.v9.i3.pp643-649
R.S. S.A.Kadir , Zunairah Hj Murat Zunairah Hj Murat , Nurul Izzati Nadiah Binti Md Suhaimi
The research is on the electromagnetic radiation of human body before and after jogging. 30 healthy students from UiTM with an age range of 23-25 years old volunteered. The seven locations of chakra points were measured. The body frequency (in MHz) is captured using frequency detector by taking the reading of the frequency 5 times at each point at the same location; hence, the average value is calculated for data analysis. This frequency measurement is recorded two times which is before and after jogging with a consistence protocol for all participants. The data in terms of frequency (Hertz) is converted into 15 colours of bio-energies representing the health level. The finding shows that 63.3% of participants’ health level improved after jogging. While 33.3% of participants had decrement in their health level. The results also indicate improvement in bio-energies score for five out of seven chakra points after jogging.
Volume: 9
Issue: 3
Page: 643-649
Publish at: 2018-03-01

Fractional Order PID Controlled Interleaved Boost converter Fed Shunt Active Filter System

10.11591/ijpeds.v9.i1.pp126-138
Purigilla Venkata Ramkumar , Munagala Surya Kalavathi
Interleaved Boost Converter (ILBC) is a better converter between Photo Voltaic(PV) source and shunt active power filter. This paper deals with comparison of time domain outputs of PI and Fractional Order PID(FOPID) controlled ILBC fed shunt active filter in a grid connected PV system. The aim of this work is to minimize current ripple using ILBC between PV system and filter to improve the dynamic performance of shunt active filter. Closed loop monitored PI and FOPID systems are modeled, and the corresponding results are presented. MATLAB results of load voltage, current, converter voltage and currents with FOPID exhibits enhanced dynamic response. The proposed FOPID controlled ILBC Fed Shunt Active Filter system (ILBCFSAF) has advantages like low settling time, less peak over shoot and reduced steady state error in load voltage. The simulation results of ILBCSAF are compared with the corresponding hardware results.
Volume: 9
Issue: 1
Page: 126-138
Publish at: 2018-03-01

Load Balance: Energy Efficient Routing Protocol in Wireless Sensor Network

10.11591/ijeecs.v9.i3.pp561-564
A. Mohamed Divan Masood , S. K. Muthusundar
Energy  consumption  is  one  of  the  major  issue  in Wireless Sensor Network  (WSN)  which reduces the lifetime of the network. In this developed work an  Cluster based Energy Efficient Routing Protocol (CBEERP) , which is  gathering the sensor hubs  in the system  into  clusters,  in this manner it productively decreased the flooding  traffic  during  discover the routing. The proposed CBEERP will balance the Energy in the Group by using some second order nodes. The reinforcement High effective hubs replace the cluster head after the cluster reaches to its threshold energy level. This CBEERP will help the effectiveness and lifetime of the system.
Volume: 9
Issue: 3
Page: 561-564
Publish at: 2018-03-01

Student Engagement and Assessment Modes: A Study

10.11591/ijere.v7i1.11342
Anil Pathak
The aim of this project is to attempt a factorial analysis of the congruence amongst three layers of assessments of Oral Presentation: Expert, Self, and Peer. Participants included graduate and undergraduate students of Asian background studying Research Writing at a technological university. The research instrument consisted of a set of assessment checklists with weighted and specified criteria for Expert, Self and Peer assessment of research presentations. Broader criteria were based on the following four factors: Use of spoken media, Use of visuals, Interrelationships, and Communicative Effect. Participants received training and were involved in a practice session on self and peer assessment before engaging in the assessment tasks. While the pilot study is unable to conclusively establish congruence among the modes of assessment, it is expected that results from a wider database would indicate the nature of well-defined assessment criteria and the ways they can be effectively communicated to assessors. The present study suggests that the differences in ratings given by peers and experts are not due to a lack of capability on the part of students, but due to lack of orientation and training. It is necessary to evolve criteria that are well-documented to enable students to evaluate their own performance as well as the performance of their peers as effectively as done by experts.
Volume: 7
Issue: 1
Page: 72-76
Publish at: 2018-03-01

An Assessment of Project Teacher Exchange for ASEAN Teachers (TEACH) Program

10.11591/ijere.v7i1.7635
Ma. Lourdes S. Agustin , Darryl Roy Montebon
Association of Southeast Asian Nations (ASEAN) integration aims to unite the South East Asian countries to promote better opportunities for the member countries in different areas such as economics and education. As a response, Philippine Normal University spearheaded the formation of the Association of Southeast Asian Teacher Education Network to promote collaboration with ASEAN countries and enhance teacher education programs. The formation of AsTEN creates the impetus to explore possibilities for the internationalization of teacher education programs among the ASEAN countries. Thus, the Institute of Teaching and Learning of PNU initiated the Project Teacher Exchange for ASEAN Teachers (TEACH). This paper reports the assessment of the piloting of the Project TEACH as experienced by the Thai participants. Moreover, this research aims to develop a model that can be utilized by other ASEAN communities as they prepare for their own international teacher education programs.
Volume: 7
Issue: 1
Page: 1–10
Publish at: 2018-03-01

Real Time Validation of EKF Estimator for Low Speed Estimation in DTC IMD

10.11591/ijpeds.v9.i1.pp433-442
Mini R , Binoj P.V. , B. Hariram Satheesh , Dinesh M.N.
Low speed estimation in DTC IMD is not accurate due to the presence of transient offset, drift and domination of ohmic voltage drop in the measured stator voltages and currents used for estimating the stator flux required for accurate estimation of speed. EKF is a nonlinear, recursive adaptive algorithm capable of estimating speed ranging from very low speed to rated speed using equation of motion from noisy measured currents and voltages based on state space technique. In the previous work a new state space model of IM was developed for estimation in EKF by feeding load torque profile as an input variable instead of estimating it by considering load torque as constant, validated using MATLAB-Simulink software. In this paper real time validation of the EKF controller with load profile fed as input for speed estimation in DTC IMD is carried out using OPAL-RT simulator and real time results validates the simulation results and proves the effectives of the new EKF for low speed estimation in DTC IMD
Volume: 9
Issue: 1
Page: 433-442
Publish at: 2018-03-01

Testing of a Solar-PV/Wind operated AC-DC Microgrid with LabVIEW Controller

10.11591/ijpeds.v9.i1.pp406-413
Vinu Thomas , Sivaprasad Athikkal , Kumaravel Sundaramoorthy , Ashok Sankar
This paper discusses about a LabVIEW based controller for the hybrid renewable energy system operated AC-DC microgrid with the major objectives of: i) predicting the power generation potential of the solar–PV and wind generators  ii) effective power management  iii) load scheduling based on the available power with the renewable sources and iv) grid/islanding mode of operation of the microgrid. In order topredict the output power of wind generator and Solar-PV system, an artificial neural network is developed.The laboratory-scale model of three phase, 400 V, 10 kVA microgrid structure is developed at National Institute of Technology Calicut, India. The developed LabVIEW based controller has been tested successfully for a real-time load and source in the laboratory environment. Test results show that the designed controller is effectively managing the output powerof the primary energy sources under different scenarios.
Volume: 9
Issue: 1
Page: 406-413
Publish at: 2018-03-01

Construct Validity and Reliability of Attitudes towards Chemistry of Science Teacher Candidates

10.11591/ijere.v7i1.11138
Woro Sumarni , Endang Susilaningsih , Yeri Sutopo
Developing students' positive attitude toward learning is one of the important things, because some researchers mention that attitudes toward the subjects are related to academic achievement. Teachers, in the implementation of learning can evaluate attitudes toward the subjects, in order to know how students' attitude toward learning that is/has been going on. Therefore, an attitude assessment is required for valid, reliable and practical learning. The purpose of this research is to develop a Likert scale type questionnaire that can measure students' attitudes toward chemistry. In this study initially has been compiled as many as 43 items. The items in the present scale were adapted from the Test of Science-Related Attitudes (TOSRA) and Attitudes towards Chemistry Lessons Scale (ATCLS). After the contents validation of the questionnaire by the expert, the questionnaire is tested on 245 college students. Determination of construct validity which is conducted with exploratory factor analysis obtained 32 items valid question. The result of factor analysis shows that the scale has nine factors that explain 62.105% of the total variance. In addition, it shows the finding of 'reliability coefficient (Cronbach' alpha) of 0.91. The results obtained showed that it has obtained valid and reliable questionnaires as a measuring tool that can be used to determine student attitudes toward chemistry in chemistry foodstuffs lectures.
Volume: 7
Issue: 1
Page: 39-47
Publish at: 2018-03-01

FPGA Based Selective Harmonic Elimination Technique for Multilevel Inverter

10.11591/ijpeds.v9.i1.pp166-173
T. Porselvi , K. Deepa , R. Muthu
Harmonic elimination at the fundamental frequency is very much appropriate for high and medium range of power generation and applications. This paper considers a new technique for selective harmonic elimination (SHE), in which the total harmonic distortion (THD) is minimized when compared with that of the conventional one. With this technique, the harmonics at lower order are eliminated, which are more predominant than the higher ones.Cascaded H-Bridge inverter fed by a single DC is considered which is simulated with the switching angles generated by both the conventional method of SHE and the new method of SHE. The simulated results of the load voltage and the waveforms of the harmonic analysis are shown. The THD values are compared for the two techniques.  The experimental results are also shown for the new technique. The switching angles are generated with the help of field programmable gated array (FPGA) in the hardware. The value of experimental THD of voltage is compared with that of simulated THD and the comparison prove that the results are satisfactory.
Volume: 9
Issue: 1
Page: 166-173
Publish at: 2018-03-01

Performance of Brushless DC Drive with Single Current Sensor Fed from PV with High Voltage-Gain DC-DC Converter

10.11591/ijpeds.v9.i1.pp33-45
G. G RajaSekhar , Basavaraja Banakara
This paper presents the performance of Brushless DC (BLDC) Motor drive with only one positioning sensor instead of three conventional sensors. The three sensor units are replaced with a single stator current sensor unit in DC bus which further reduces the cost increasing the reliability of the drive system. Using a single sensor in stator requires minimum electronic equipment for the purpose of measurement process. This paper evolves the BLDC motor drive fed from PV system. A high voltage-gain DC-DC converter is presented in this paper to step-up the voltage from PV system. The appropriateness of PV fed BLDC motor drive is verified for variable increamental speed with fixed torque and variable decremental speed with fixed torque operating conditions. BLDC motor drive performance is also performed for variable torque with fixed peed working condition. The proposed system and results are developed using MATLAB/SIMULINK software.
Volume: 9
Issue: 1
Page: 33-45
Publish at: 2018-03-01

Path Optimization Algorithm in Wireless Sensor Network with Obstacle

10.11591/ijeecs.v9.i3.pp599-601
J. S. Praveen , Mr. Mayilvahanan
Clustering is used for prolonging the network lifetime in WSN. It groups sensor nodes into different groups and selects a single node as a cluster head (CH) for all the groups. CHS collect the data from consonant clusters and forward the data to base station. In this paper, we proposed path optimization algorithm in Wireless Sensor Network with an obstacle (POAWSNO) that periodically selects the cluster heads according to quality factor. The quality factor is estimated by three criteria including quality of the link, remaining energy and degree of the node. Path optimization technique determines the shortest path during obstacle present in the WSN. POT is used to reduce the hop count and packet delay. The simulation results demonstrate that this approach improves the throughput and reduce the loss of packets and energy consumption in the network using network simulator.
Volume: 9
Issue: 3
Page: 599-601
Publish at: 2018-03-01

Cassava Quality Classification for Tapioca Flour Ingredients by Using ID3 Algorithm

10.11591/ijeecs.v9.i3.pp799-805
Yohanssen Pratama , Hadi Sutanto Saragi
Cassava is one of the main foods consumed by Indonesian people and main ingredients to make tapioca flour. In North Sumatera there is factory that produced tapioca flour to fulfill consumer demand.  To be able to meet the needs of consumers and seize market share, the product must have a good quality. Product specifications are a reference for product quality and measured with 7 parameters. The seven parameters include whiteness, moisture content, spotness, ash content, thinness, residual screen, pH flour, which meets the Indonesian National Standard. In this research we use two parameters (whiteness and spotness) to determine the quality of cassava and help the factory to maintain their product quality. In here we use blob and edge detection method in image processing to detect spot and after that classified the cassava by using an ID3 algorithm. 
Volume: 9
Issue: 3
Page: 799-805
Publish at: 2018-03-01

Improving Performance of DOM in Semi-structured Data Extraction using WEIDJ Model

10.11591/ijeecs.v9.i3.pp752-763
Ily Amalina Ahmad Sabri , Mustafa Man
Web data extraction is the process of extracting user required information from web page. The information consists of semi-structured data not in structured format. The extraction data involves the web documents in html format. Nowadays, most people uses web data extractors because the extraction involve large information which makes the process of manual information extraction takes time and complicated. We present in this paper WEIDJ approach to extract images from the web, whose goal is to harvest images as object from template-based html pages. The WEIDJ (Web Extraction Image using DOM (Document Object Model) and JSON (JavaScript Object Notation)) applies DOM theory in order to build the structure and JSON as environment of programming. The extraction process leverages both the input of web address and the structure of extraction. Then, WEIDJ splits DOM tree into small subtrees and applies searching algorithm by visual blocks for each web page to find images. Our approach focus on three level of extraction; single web page, multiple web page and the whole web page. Extensive experiments on several biodiversity web pages has been done to show the comparison time performance between image extraction using DOM, JSON and WEIDJ for single web page. The experimental results advocate via our model, WEIDJ image extraction can be done fast and effectively.
Volume: 9
Issue: 3
Page: 752-763
Publish at: 2018-03-01

An Intelligent Controller Design Approach for MIMO Coupled Tank System

10.11591/ijra.v7i1.pp8-17
Mohd Hafiz Jali , Ahmad Firdaus Azhar , Rozaimi Ghazali , Chong Chee Soon
Nowadays, versatilities of controllers have been developed to control the Coupled Tank System (CTS) such as proportional, integral, derivative (PID), fuzzy, fuzzy PID and neuro network. This paper focused on the control of the pump flow rate, in and out of the tank against the cross-sectional area of the CTS’s tank. The main objective of this paper is to design a CTS by using MATLAB since the Fuzzy Logic Controller (FLC) is widely utilized in the control of engineering applications in the industrial. Therefore, the FLC will be utilized to control and improve the performance of the CTS. The conventional PID controller will be applied, which reacts as a benchmark in the performance of the FLC. Parameters such as steady state error, settling time, and maximum overshoot will be part of the simulation results. As a result of the dynamic response executed in the closed-loop environment, it can be concluded that the FLC is capable of performing better than the conventional PID controller.
Volume: 7
Issue: 1
Page: 8-17
Publish at: 2018-03-01

Harmonic Analysis of Three-phase Fixed Capacitor–thyristor Controlled Reactor under Balanced and Unbalanced Conditions

10.11591/ijra.v7i1.pp67-76
Jayababu Badugu , Y. P.Obulesu , Ch. Saibabu
Three-phase Fixed Capacitor Thyristor Controlled Reactor is widely used for reactive power compensation in power systems because of reduced cost and high reliability.  The problem with FC-TCR is that to generate current harmonics when it is partially conducting. When this harmonic current is interacted with system impedance, voltage waveform will distorted. This harmonic pollution is undesirable in power systems. Therefore, it is important to know the harmonic behaviour of three-phase FC-TCR before they can be used in a power system network. This paper presents the harmonic analysis of three-phase FC-TCR operating under balanced and unbalanced conditions. This analysis is useful to design the harmonic filter to reduce the harmonic pollution in power systems.The proposed work is implemented in MATLAB environment.
Volume: 7
Issue: 1
Page: 67-76
Publish at: 2018-03-01
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