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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

Student Achievement in Turkey, According to Question Types Used in PISA 2003-2012 Mathematic Literacy Tests

10.11591/ijere.v7i1.11045
Yesim Ozer Ozkan , Nesrin Ozaslan
The aim of this study is to determine the level of achievement of students participating in Programme for International Student Assessment (PISA) 2003 and PISA 2012 tests in Turkey according to questions in the mathematical literacy test. This study is a descriptive survey. Within the scope of the study, the mathematical literacy test items were classified as multiple-choice, complex multiple-choice and constructed response items according to the different question types. The ratio of correct and partially correct and incorrect response given to each question type has been determined. Findings show that the achievements of students differ according to different types of questions. While the question type with the highest success average in the PISA 2003 test was multiple-choice, students got the highest scores from complex multiple-choice questions in the PISA 2012 test. The questionnaire with the lowest success average was found to be complex multiple-choice questions in the PISA 2003 test while students got the lowest scores from constructed response items in the PISA 2012 test. According to the constructivist education approach effectuated in 2005-2006 academic year, it is expected to observe a rise in constructed response question type; however, findings of the study reveal that the success of constructed response questions is decreased according to the application years.
Volume: 7
Issue: 1
Page: 57-64
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

Teachers' Obstacles in Implementing Numbered Head Together in Social Science Learning

10.11591/ijere.v7i1.11625
Harini Widyaningtyas , Retno Winarni , Tri Murwaningsih
This study is aimed at describing teachers’ obstacles in applying Numbered Head Together learning model in social science learning. The type of research is qualitative descriptive. The subject of the research is the third-grade teacher of elementary school in Sukoharjo Sub-district. The findings of the research were analyzed using interactive analysis of Miles and Huberman and were presented through descriptive narrative technique. The results reveal several obstacles that were experienced by the teachers. First, the time is limited. Second, the classroom atmosphere is noisy due to large number of students. Third, the number of students in total is not even. Fourth, the students interfere each other. Fifth, not all of the students work in the group. Sixth, the students are not actively responding. Seventh, the students are lack of confidence in the presentation.
Volume: 7
Issue: 1
Page: 25-31
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

An Actor-critic Algorithm Using Cross Evaluation of Value Functions

10.11591/ijra.v7i1.pp39-47
Hui Wang , Peng Zhang , Quan Liu
In order to overcome the difficulty of learning a global optimal policy caused by maximization bias in a continuous space, an actor-critic algorithm for cross evaluation of double value function is proposed. Two independent value functions make the critique closer to the real value function. And the actor is guided by a crossover function to choose its optimal actions. Cross evaluation of value functions avoids the policy jitter phenomenon behaved by greedy optimization methods in continuous spaces. The algorithm is more robust than CACLA learning algorithm, and the experimental results show that our algorithm is smoother and the stability of policy is improved obviously under the condition that the computation remains almost unchanged.
Volume: 7
Issue: 1
Page: 39-47
Publish at: 2018-03-01

Effect of Integrated Feedback on Classroom Climate of Secondary School Teachers

10.11591/ijere.v7i1.11146
Nilesh Kumar Patel
This study aimed at finding out the effect of Integrated feedback on Classroom climate of secondary school teachers. This research is experimental in nature. Non-equivalent control group design suggested by Stanley and Campbell (1963) was used for the experiment. Integrated feedback was treatment and independent variable, Classroom climate was dependent variable and pre- Classroom climate, and Intelligence were considered as covariates. The sample of the study comprised of 77 secondary school teachers and 220 students studying in secondary classes from purposively selected four schools of Indore city. The data for Classroom climate, Job satisfaction and Intelligence were collected through standardized tools. One-way ANCOVA and 2X2 factorial design ANCOVA were used for data analysis. Hypotheses were tasted at level of significance with α = 0.05. It was found that the treatment has significant effect over Classroom climate when pre- Classroom climate was taken as covariate. The results also shown that Classroom climate was independent of the treatment when Intelligence and pre- Classroom climate were separately considered as covariates. In addition, classroom climate was also found independent of interaction between feedback and intelligence when pre – Classroom climate was taken as covariate.
Volume: 7
Issue: 1
Page: 65-71
Publish at: 2018-03-01

Sizing and Implementation of Photovoltaic Water Pumping System for Irrigation

10.11591/ijai.v7.i1.pp54-62
Santosh S. Raghuwanshi , Vikas Khare
Solar photovoltaic systems convert energy of light directly into electrical energy. This work presents, a process to compute the required size of the stand-alone solar photovoltaic generator based water pumping system for an existing area. In addition solar photovoltaic generator is connecting voltage source inverter fed vector controlled induction motor-pump system. Perturb and observe are used for harvesting maximum power of PV generator in between buck-boost DC converter and inverter system. In this paper system result is validated by fuzzy logic system and compare with variable frequency drives based PI controllers, driving motor-pump system. The operational performance at 60 m head, VFD based controllers in terms overshoot and setting time and also analysis performance of motor-pump set under different weather conditions. By assessment of system we find that speed and torque variation, overshoot and settling time is more with PI controller, Fuzzy logic controller (FLC) performance have dominance to VFD based PI controller.
Volume: 7
Issue: 1
Page: 54-62
Publish at: 2018-03-01
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