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31,456 Article Results

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

Design and development of soft robotic hand for vertical farming in spacecraft

10.11591/ijra.v9i1.pp6-16
Aswath Suresh , Ganesha Udupa , Dhruv Gaba
For colonization in deep space we need to explore the feasibility of a bioregenerative system in microgravity or artificial gravity environments. The process has various complexities form ranging to biological obstacles to engineering limitations of the spacecraft. Concentration of microbes in the confinements of a spacecraft can be fatal for the crew. In this paper, a solution to the elevated microbial levels by farming using robots is discussed. The soft robotic arm is made up of Asymmetric Flexible Pneumatic Actuator (AFPA). The AFPA under internal pressure will curve in the direction of the side having greater thickness as the expansion of the thinner side (outside radius) will be more than thicker side (inside radius) due to differential expansion and moment induced due to eccentricity. Simulation results demonstrate that bending based on AFPA can meet the designed requirement of application. The AFPA is used for five fingers of the robotic hand. The safe, soft touch and gentle motion of the bellow (AFPA) gives the feel of real human hand. The internal pressure of the AFPA is controlled using a solenoid valve which is interfaced using an Arduino microcontroller for hand like moves. The bending of the fingers and degree of freedom (DOF) of the joints of the hand is controlled using an IMU and flex sensor. Wireless connection of the hand and the control system is implemented using XBee pro 60mW with a range of 1 miles. The pneumatic soft robotic hand is made up of solenoid valve, Mini Compressor, AFPA bellow, and Servos. This soft robotic hand has many advantages such as good adaptability, simple structure, small size, high flexibility and less energy loss. As an extension Manual control of the robot using a virtual reality environment and well as some possible aspects of an automated farming systems can be considered as future additions.
Volume: 9
Issue: 1
Page: 6-16
Publish at: 2020-03-01

Inductive instructional approach, career aspiration and noble values in history

10.11591/ijere.v9i1.20417
Mohd Razimi Husin , Hishamuddin Ahmad , Ismail Yusuf Panessai , Norliza Abdul Majid , Agus Lokman Sulam
This paper presents inductive instructional approach, career aspirations and noble values in History. In the 21st century there is still History teachers emphasize the only cognitive aspects of student learning, but still have little to do with everyday life, career aspirations and noble values. This study has developed a review list of learning experiences on specific learning content that takes into account inductive approach, career aspirations and noble values of History subject. Finally, this study examines the effectiveness of the learning that emphasize on the inductive approach, career aspirations and noble values. This study uses a qualitative approach supported by quantitative data involving four stages namely library studies, observations, expert suggestions and quasi-experiments. 30 teachers and 60 students were selected through purposeful sampling. The results show that mean inductive learning experiences, career aspirations and noble values in the subject is higher than the learning with other method. The Inductive-directed delivery approach showed a mean increase of 1.15 in students associate with classroom activities. The results also show that an increase of mean 1.5 and 0.35 in career aspirations and noble values. This study has revealed a checklist of learning experiences, career aspirations and noble values that beneficial to all educators.
Volume: 9
Issue: 1
Page: 162-167
Publish at: 2020-03-01

Two phase motor fed from controlled supply

10.11591/ijra.v9i1.pp42-45
H. Shousha , Sara Ali , A. B. Kotb
Compared to single phase operation, a good utilization of machine material is achieved by supplying the two-phase stator windings from a controlled supply. It is necessary to start from the known equivalent circuits of both forward and backward components to obtain the relations between the sequence and the phase voltage values. In this method of control, the torque expression is driven in a simple form and the torque speed characteristic are computed and plotted for different values of the time-phase angle. The operation of 2-phase motor from single phase supply carried out by connecting one stator phase directly to the voltages source, with exciting the second stator phase through the phase shifting element. In this method, the starting and the maximum torque values can be controlled by changing the stator field from a pulsating of (0°) to a pure rotating field at (90°).
Volume: 9
Issue: 1
Page: 42-45
Publish at: 2020-03-01

Estimation of nonlinear systems parameters

10.11591/ijra.v9i1.pp26-33
Mohamed Benyassi , A. Brouri
In this paper, an identification method is proposed to determine the nonlinear systems parameters. The proposed nonlinear systems can be described by Wiener systems. This structure of models consists of series of linear dynamic element and a nonlinearity block. Both the linear and nonlinear parts are nonparametric. In particular, the linear subsystem of structure entirely unknown. The considered nonlinearity function is of hard type. This latter can have a dead zone or with preload. These nonlinear systems have been confirmed by several practical applications. The suggested approach involves easily generated excitation signals.
Volume: 9
Issue: 1
Page: 26-33
Publish at: 2020-03-01

The opinions of students, professors and practice teachers on the teaching practice course

10.11591/ijere.v9i1.20363
Esra Töre
The goal of this study was the evaluation of the teaching practice course in the Psychological Counseling and Guidance (PCG) department by students, professors and practice teachers. It was a pneumology study designed with qualitative research method. The study group consists of seven students, five professors and five practice teachers from 3 different schools and 3 different universities in İstanbul. Study data were analyzed with content analysis. It was found that the communication and collaboration between the professors and practice teachers of the teaching practice course were low, and the applications within the scope of the course were inadequate. Additionally, the study has revealed that it is necessary to inform the practice teachers about the previous courses and internships the students have taken, to ensure the attendance of students to full-day practice courses on different days and that a detailed teaching practice course guide is prepared. This study is thought to benefit the literature in the sense that it shows how PCG teaching practice course differs from other teaching practice courses, in addition to suggestions to the decision makers and practitioners for improving the course.
Volume: 9
Issue: 1
Page: 10-20
Publish at: 2020-03-01

Literation movement for leading schools: Best practice and leadership power

10.11591/ijere.v9i1.20279
Zalik Nuryana , Agus Suroyo , Indah Nurcahyati , Farid Setiawan , Arif Rahman
The school literacy movement is the first step of scientific development, aimed at enhancing science education. It has an important role in encouraging every citizen to have basic knowledge of the nature of science through active participation. This study aims to analyze the implementation of the School Literacy Movement program designated by the Ministry of Education and Culture due to the poor reading interest Indonesia students from several international surveys. The study was conducted at Al Mujahidin Muhammadiyah Middle School in Yogyakarta, using the qualitative method of data collection. The results show that the school literacy program is not only specific for reading and writing but for also other academics as activities such as numerals, science, digitalization, finance, culture, and citizenship. In conclusion, the implementation of a structured and systematic program positive impacts on the growth of literacy achievement for all school members from students, teachers, down to employees in Indonesia.
Volume: 9
Issue: 1
Page: 227-233
Publish at: 2020-03-01

Vibration control of FSAE quarter car suspension test rig using magnetorheological damper

10.11591/ijeecs.v17.i3.pp1281-1288
Muhammad Adhar Bagus , Azizan As’arry , Hesham Ahmed Abdul Mutaleb Abas , Abdul Aziz Hairuddin , Mohd Khair Hassan
Recently MRF damper -which has a significant controllable damping force - used frequently in many active and semi-active suspension systems. However, MRF damper needs controller to estimate the desired force to dissipate the occurred vibration instantaneously. PID controller is one of the effective feedback controllers which shows robustness and simplicity in control MRF dampers, but still the parameters of the PID controller under study to find out the optimum values. This study focused on the vibration control using Magneto-rheological (MR) damper on a FSAE quarter car suspension test rig to study and obtain the optimum running condition. The test rig was designed, modified and then tested using a P-controller integrated with MR damper, unbalance mass used as disturbance and analyzed using LABVIEW software in time and frequency domains. The natural frequency obtained was 2.2 Hz were similar to the actual FSAE car natural frequency. Based on the acceleration against time graph with different proportional gain value the optimal value for proportional gain, Kp was 1. Hence, the experiment work could be used as the initial stage to study and develop a robust controller to suppress vibration on a car.
Volume: 17
Issue: 3
Page: 1281-1288
Publish at: 2020-03-01

Z shaped like resonator with crystal in the presence of flat mirror based standing wave ratio for optical antenna systems

10.11591/ijeecs.v17.i3.pp1405-1409
Iraj Sadegh Amiri , Ahmed Nabih Zaki Rashed , Preecha Yupapin
This study has outlined the Z resonator shaped with Brewster crystal in the presence of flat mirror for measuring the standing wave ratio. Stability parameter and beam radius are simulated versus thickness, refractive index of the crystal and first and second folding ranges. Beam radius variations are studied against phase angle and curvature radius of spherical mirror in T and S planes. Intermode beat frequency of the system is 216.276 MHz and total cavity length is 693.078 mm. It is important the standing wave ratio is dependent on stability parameter and beam radius variations. 
Volume: 17
Issue: 3
Page: 1405-1409
Publish at: 2020-03-01

Quality of school life in Turkey, Finland and South Korea

10.11591/ijere.v9i1.20522
Ayşe Elitok Kesici , Veysel Karani Ceylan
This study was aimed to compare the major studies conducted on the quality of school life in Turkey, Finland and South Korea. The study focuses on which dimensions of quality of school life research in these three countries were examined, their participants, school levels and research methods. This research is in the literature review model. In this context, data were obtained by scanning the related books, theses and articles. In the research, document analysis technique of qualitative research method was used to collect data. Based on the research findings, it is seen that research studies have been conducted in Finland to establish the theoretical framework for conceptualization of the subject. Qualitative, quantitative and mixed methods were used in research studies conducted in South Korea. In the research conducted in three countries, the concept of self, bullying, implicit program, gender, socio-economic level, classmate, teacher and family support, self-efficacy, music, living environment, self and teacher-learner relationship have been determined to affect quality of school life. In the research studies conducted in Turkey, levels of quality of school life were detected, whereas in the research studies conducted in South Korea, the importance of traditional values of Confucius doctrine were focused on.
Volume: 9
Issue: 1
Page: 100-108
Publish at: 2020-03-01

Integrated hybrid optical networking for 5G access networks

10.11591/ijeecs.v17.i3.pp1647-1656
Dawit Hadush Hailu , Gebrehiwet Gebrekrstos Lema , Gebremichael T. Tesfamariam , Tole Sutikno
Today, deployment of optical fiber has offered large transmission capacity which cannot be efficiently utilized by the electronic switches. Rather, Integrated Hybrid Optical Network (IHON) is a promising approach which combines both packet and circuit switching techniques. As a result, it achieves efficient utilization of the bulk capacity and guarantees absolute Quality of Service (QoS) by optimizing the advantages of the two switching schemes while diminishing their disadvantages. Transpacket has developed a Fusion node implementing IHON principles in Ethernet for the data plane. Hence, this paper investigates and evaluates IHON network for 5G access networks. The simulated results and numerical analysis confirm that the Packet Delay Variation (PDV), Delay and Packet Loss Ratio (PLR) of Guaranteed Service Transport. (GST) traffic in IHON network met the requirements of 5G mobile fronthaul using CPRI. The number of nodes in the network limits the maximum separation distance between Base Band Unit. (BBU) and Remote Radio Head (RRH), link length; for increasing the number of nodes, the link length decreases. In addition to this, we verified how the leftover capacity of fusion node can be used to carry the low priority packets and how the GST traffic can have deterministic characteristics on a single wavelength by delaying it with Fixed Delay Line (FDL). For example, for LSM1GE=0.3 the added Statistical Multiplexing (SM) traffic increases the 10GE wavelength utilization up to 89% without any losses and with SM PLR=1E−03 up to 92% utilization.
Volume: 17
Issue: 3
Page: 1647-1656
Publish at: 2020-03-01

DeepOSN: Bringing deep learning as malicious detection scheme in online social network

10.11591/ijai.v9.i1.pp146-154
Putra Wanda , Marselina Endah Hiswati , Huang J. Jie
Manual analysis for malicious prediction in Online Social Networks (OSN) is time-consuming and costly. With growing users within the environment, it becomes one of the main obstacles. Deep learning is growing algorithm that gains a big success in computer vision problem. Currently, many research communities have proposed deep learning techniques to automate security tasks, including anomalous detection, malicious link prediction, and intrusion detection in OSN. Notably, this article describes how deep learning makes the OSN security technique more intelligent for detecting malicious activity by establishing a classifier model.
Volume: 9
Issue: 1
Page: 146-154
Publish at: 2020-03-01

Analysis of power system parameters for islanding detection using wavelet transform

10.11591/ijeecs.v17.i3.pp1184-1193
Safdar Raza , Hanya Amjad , Muhammad Umer , Aqeel Khalid
This paper classifies the basic power system parameters based on sensitivity and performance capability. This is the basic step in selecting the suitable parameter for intelligent islanding detection technique. The behaviour of basic power system parameters is analyzed using wavelet transform under all possible islanding and non-islanding conditions. In wavelet transform, the mother wavelet plays a significant role in the extraction of parameter features. The db4 mother wavelet is selected after an extensive analysis on different mother wavelets. As a result, it has been found that the extracted feature of reactive power shows the highest capability to distinguish islanding from non-islanding events.
Volume: 17
Issue: 3
Page: 1184-1193
Publish at: 2020-03-01

Design and development of Bi directional power meter using microcontroller

10.11591/ijeecs.v17.i3.pp1594-1600
Tasnim Ikra Rahman , Anika Fariha Rashid , Md. Habibur Rahman
The significance of power or energy measurement has been very acute in recent times with the increase of Grid-Tied Solar PV system that needs Net-Metering. Power can be flown in both directions, from grid to load or from load (PV- Panel) to grid line. If power flow from both side is not calculated and surplus power which is not being used at the time instant is not stored, accurate billing is not possible. That is why a bidirectional power meter is required which can measure both the positive and negative power at any instant. The aim of this paper is to develop a bidirectional power meter using microcontroller. The work of this paper constitutes a microcontroller, a current sensor, bulbs as load and a display. The rms values of voltage and current is determined and showed in the display. Then the calibration is done inside the developed program. After that the power is calculated and showed in the display. Then the direction of the power is determined depending on the direction (whether positive or negative) of the power which is also dependent on the phase difference between the voltage and current. If there is no phase difference between the voltage and current, then the power is positive and leaving from the grid. If there is 180 degree phase difference between the voltage and current, then the power is negative and entering to the grid. The direction of the power flow is very important for efficiently of the proposed meter. For some defined load the accuracy of the developed meter is calculated as 94%.
Volume: 17
Issue: 3
Page: 1594-1600
Publish at: 2020-03-01

IR4.0: unmanned store apps

10.11591/ijeecs.v17.i3.pp1540-1547
Saidatul Rahah Hamidi , Muhammad Afiq Muhamad Yusof , Shuhaida Mohamed Shuhidan , Shamsiah Abd Kadir
The Internet of Things (IoT) is predicted to be one of the major megatrends in technology that applies worldwide including in Malaysia. Current advantages and expectations of using a connected device has become a reason to use applications in many areas, including the field of retail industry. The evolvement of technology has changed the retail landscape that replaces the manpower in their operations to improve the efficiency, quality and work ethics. Hence, this paper discussed comparative study of technology innovation applied and process flow in unmanned store from different country. Next, prototype of unmanned store apps was designed according to the most preferred technology based on the comparative study. IoT retailer model can be used to improve the retail experience for the customers. Thus, it may perform strategic marketing and gain retail intelligence. Besides, the revolution of using technology in this retail industry is contributing towards Industry 4.0 through digital transformation.
Volume: 17
Issue: 3
Page: 1540-1547
Publish at: 2020-03-01
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