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27,404 Article Results

Mathematical Model for Mapping Students’ Cognitive Capability

10.11591/ijere.v5i3.4543
Hardi Tambunan
The quality mapping of educational unit program is important issue in education in Indonesia today in an effort to improve the quality of education. The objective of this study is to make a mathematical model to find out the map of students’ capability in mathematics. It has been made a mathematical model to be used in the mapping of students’ capability. Demonstration of the use of models performed in accordance with the data of the results from the math test given to 147 students in grade XII, state senior high school, science program, and academic year 2015-2016. The map of students’ capability can be known that 48 test items are derived from 16 sub topics of three cognitive domain, only 19 test items are achieved. The achieved map lies in 8 sub topics for knowledge domain and 6 sub topics for comprehension domain and application domain has 5 sub topics. So that sub topic and cognitive domain which can not be achieved can be done further corrective action to obtain the maximum results. This paper demonstrates how operational research techniques can be applied for problem solving in education.
Volume: 5
Issue: 3
Page: 221-226
Publish at: 2016-09-01

Interleaved Boost Converter Fed with PV for Induction Motor/Agricultural Applications

10.11591/ijpeds.v7.i3.pp835-853
Adireddy Ramesh , M. Siva Kumar , O. Chandra Sekhar
In present Electricity market Renewable Energy Sources (RES) are gaining much importance. The most common Renewable Energy Sources are Photo voltaic (PV), fuel cell (FC) and wind energy systems, out of these three PV systems PV system can implemented in most of the locations. Due to the power cuts and power disturbances in Distribution systems agriculture application is concentrated on PV based Energy system. The use of PV system is increasing day by day in agriculture application, due to their ease of control and flexibility. PV Electrification schemes also involves various subsidies in government national and international donors. Especially in Agriculture field by use of PV one can achieve higher subsidy. The output of PV system is low voltage DC to have high efficiency. The motors used in agriculture field are Induction Motors (IM) fed from Three phase AC supply, to boost the PV output we need a high voltage gain boost converter along with PWM inverter to Induction motor drive. Out of various DC-DC converter configurations interleaved boost converter is gaining much attention, due to its reduction in size and Electromagnetic Interference (EMI). In this work we are proposing a PV fed interleaved boost converter with PWM inverter for agriculture applications. The design process of interleaved boost converter is explain detail and compared with existing boost converter. A 10KW Power rating is choosing for the Induction motor drive and design calculations are carried out. A MATLAB/SIMULINK based model is developed for boost and interleaved boost converter and simulation results are presented, finally a scaled down hardware circuit design for interleaved boost converter and results are presented.
Volume: 7
Issue: 3
Page: 835-853
Publish at: 2016-09-01

Improving Process Writing with the Use Authentic Assessment

10.11591/ijere.v5i3.4539
Muhammad Noor bin Abdul Aziz , Nurahimah Mohd Yusoff
The paper discusses on how process writing is improved with the use of authentic assessment in an English Language classroom. Eleven primary school children from Year 4 in a rural school in Sabah are the participants of the study. Data were collected by observing them during the English Language lessons and at the end of the series of observations, an interview session was conducted. The results of the study revealed thatusing authentic assessment to assess young learners’ writing skills is beneficial and effective in helping them to write better in the English Language classroom. The presentation will therefore provide suggestions for the use of more authentic assessment in the classroom, particularly in English Language teaching and learning.
Volume: 5
Issue: 3
Page: 200-204
Publish at: 2016-09-01

Mining Association Rules: A Case Study on Benchmark Dense Data

10.11591/ijeecs.v3.i3.pp546-553
Mustafa Bin Man , Wan Aezwani Wan Abu Bakar , Zailani Abdullah , Masita@Masila Abd Jalil , Tutut Herawan
Data mining is the process of discovering knowledge and previously unknown pattern from large amount of data. The association rule mining (ARM) has been in trend where a new pattern analysis can be discovered to project for an important prediction about any issues. Since the first introduction of frequent itemset mining, it has received a major attention among researchers and various efficient and sophisticated algorithms have been proposed to do frequent itemset mining. Among the best-known algorithms are Apriori and FP-Growth. In this paper, we explore these algorithms and comparing their results in generating association rules based on benchmark dense datasets. The datasets are taken from frequent itemset mining data repository. The two algorithms are implemented in Rapid Miner 5.3.007 and the performance results are shown as comparison. FP-Growth is found to be better algorithm when encountering the support-confidence framework.
Volume: 3
Issue: 3
Page: 546-553
Publish at: 2016-09-01

Small Scale Unmanned Underwater Remotely Operated Crawler (ROC)

10.11591/ijeecs.v3.i3.pp481-488
Mohd Shahrieel Mohd Aras , Muhammad Nizam Kamarudin , Muhammad Hanif Bin Che Rusli , Muhammad Iktisyam Mohd Zainal
This project is describes the development of underwater vehicle which is remotely operated crawler (ROC). The ROC is developed for the implementation of underwater surface floor and used as for rescuing application. This project is aim to reduce the risk the human life and to solve the disability of human to dive to the underwater for rescue and archeologist work in a longer period. Due to the underwater vehicle that can be operated in a larger depth and reducing the liability of the human life. Moreover, the main problem with this ROC application is to travelling under the uneven of the underwater floor and make sure it always have negative buoyant and a good stability to perform at uneven surface of underwater. Furthermore, the ROC need the overcome the obstacle of the underwater surface without any problem. Therefore, the design of ROC is based on four wheel mechanism to maneuver it at the uneven surface. Besides that, the ROC is tethered and control manually by using a joystick controller and the Peripheral Interface Controller (PIC) are used to control this ROC. This method is to fulfill the target of the project that are to develop and fabricate the ROC and to study the performance of the ROC in terms of controllability, stability and maneuverability. As a result, the movement of ROC is analyzing in order to gain the requirement of stability and the buoyancy in the water. Moreover, the development of the ROC can be tested in several experiments which includes overcome obstacle, controllability, and it performances to be operated on the surface floor of underwater. Hence, this project will gives the good impact and benefit related to the underwater industries and can be applied in the rescuing application in the future.
Volume: 3
Issue: 3
Page: 481-488
Publish at: 2016-09-01

Comparative Study between Drill Skill and Concept Attainment Model towards Physics Learning Achievement

10.11591/ijere.v5i3.4541
Izaak Hendrik Wenno , Pieter Wattimena , Luky Maspaitela
Alternative learning model that can be used in teaching physics to overcome the problems of lack of student learning achievement is a model of skill training (drill skills, and the concept attainment model. Drill skill model is a teaching technique in which students carry out training activities on what they have learned, so that the material already taught more embedded in the minds of students, and students will have the dexterity or higher, while the concept attainment is a model of achievement of learning model that is designed to help students to be more easily learn a concept. The purpose of this study was to compare the results between student who was teached with drill skill model and concept attainment model. The quasi-experimental type was used. Sampling was done randomly in order to obtain two classes one for the first experimental group with drill skill, and the second one for the second experimental group with concept attainment model. These results suggest that the science-physics learning achievement of students with drill skill model is better than using a concept attainment model.
Volume: 5
Issue: 3
Page: 211-215
Publish at: 2016-09-01

Multi-objective Optimization Scheme for PID-Controlled DC Motor

10.11591/ijpeds.v7.i3.pp734-742
Gunawan Dewantoro
DC Motor is the most basic electro-mechanical equipment and well-known for its merit and simplicity. The performance of DC motor is assessed based on several qualities that are most-likely contradictory each other, i.e. settling time and overshoot percentage. Most of controllers optimization problems are multi-objective in nature since they normally have several conflicting objectives that must be met simultaneously. In this study, the grey relational analysis (GRA) was combined with Taguchi method to search the optimum PID parameter for multi-objective problem. First, a L9 (33) orthogonal array was used to plan out the processing parameters that would affect the DC motor’s speed. Then GRA was applied to overcome the drawback of single quality characteristics in the Taguchi method, and then the optimized PID parameter combination was obtained for multiple quality characteristics from the response table and the response graph from GRA. Signal-to-noise ratio (S/N ratio) calculation and analysis of variance (ANOVA) would be performed to find out the significant factors. Lastly, the reliability and reproducibility of the experiment was verified by confirming a confidence interval (CI) of 95%.
Volume: 7
Issue: 3
Page: 734-742
Publish at: 2016-09-01

Accelerometer Based Control of Robotic Arm

10.11591/ijra.v5i3.pp176-181
Yogita sawant
Abstract— Robots are very smart and interactive machines that can be programmed and used in many areas such as industry, manufacturing, production lines, household or health, etc. These robots can perform hard, dangerous, and accurate work to facilitate our life and to increase the production. Humans are trying to minimize the time required to do the similar kind of jobs. The task in which picking & placing of an object is to be done, can be carried out with the help of robots. These robots can minimize the human efforts. The robotic arms can be also used in the industries to assemble the small parts, in chemical industries to pick and place small types of object such as tablets. Artificial robotic arms thus can be used to control gestures. In this paper an  idea of controlling robotic arm is implemented using an accelerometer which is placed on the human hand, capturing its behavior (gestures and postures) which are then transmitted at some distance and the robotic arm assembly connected wirelessly moves accordingly.
Volume: 5
Issue: 3
Page: 176-181
Publish at: 2016-09-01

Improving Students’ Creative Thinking and Achievement through The Implementation of Multiple Intelligence Approach with Mind Mapping

10.11591/ijere.v5i3.4546
I Wayan Widiana , I Nyoman Jampel
This classroom action research aimed to improve the students’ creative thinking and achievement in learning science. It conducted through the implementation of multiple intelligences with mind mapping approach and describing the students’ responses. The subjects of this research were the fifth grade students of SD 8 Tianyar Barat, Kubu, and Karangasam. The objects of this research were multiple intelligence, achievement in science and students’ response. The research was conducted in two cycles and every cycle consisted of planning, action implementation, observation, and reflection. The data of students’ creative thinking were collected by performance test; the data of students’ achievement in learning science were collected through questionnaire. After the data were collected, then they were analyzed descriptively and quantitatively. The results of the study showed that (1) the implementation of multiple intelligence approach improved the students’ creative thinking and achievement in learning science. The improvement in the students’ creative thinking from cycle I to cycle II is 16.56%. (2) The improvement of the students’ achievement in learning science from cycle I to cycle II is 11.46%. (3) The students’ response to the implementation of multiple intelligence with mind mapping fell into category positive.The students felt happy in learning science through the implementation of multiple intelligences with mind mapping.
Volume: 5
Issue: 3
Page: 246-254
Publish at: 2016-09-01

Design and Fabrication of Voice Controlled Unmanned Aerial Vehicle

10.11591/ijra.v5i3.pp205-212
S. Sakthi Anand , R. Mathiyazaghan
Unmanned Aerial Vehicles have gained well known attention in recent years for a numerous applications such as military, civilian surveillance operations as well as search and rescue missions. The UAVs are not controlled by professional pilots and users have less aviation experience. Therefore it seems to be purposeful to simplify the process of aircraft controlling. The objective is to design, fabricate and implement an unmanned aerial vehicle which is controlled by means of voice recognition. In the proposed system, voice commands are given to the quadcopter to control it autonomously. This system is navigated by the voice input. The control system responds to the voice input by voice recognition process and corresponding algorithms make the motors to run at specified speeds which controls the direction of the quadcopter.
Volume: 5
Issue: 3
Page: 205-212
Publish at: 2016-09-01

Health Seeking Behaviour among Undergraduates in the Faculty of Health Sciences and Technology, University of Nigeria Enugu Campus

10.11591/ijere.v5i3.4537
Okechukwu Odinaka Ajaegbu , Ijendu Ihuarulam Ubochi
Health is essential for social and economic development of any country. Nearly 10 million children in developing countries die each year before reaching the age of five from ailments, mostly pneumonia, diarrhoea, and malaria.The socio-cultural belief about the causation of disease and its curability has direct correlation with the treatment seeking behaviour of an individual.It is in the light of the foregoing that this research was necessitated to investigate various health seeking behavours exhibited by undergraduates in the Faculty of Health Science and Technology. Health Belief Model was used to examine ways people react to health issues. A descriptive survey research design was employed while questionnaire was data collection tool for the study. The study revealed that common illnesses among students are headache and fever. Students generally go to buy drugs from the patent medicine stores when sick. Students will not go to the hospital until they experience pains that they cannot accommodate again. Factors affecting the choice of health care adopted when ill is mostly related to its accessibility, effectiveness and none delay. Finally, while government should be able to provide access to many health care facilities, health promotion and preventive strategies should be reinforced in universities.
Volume: 5
Issue: 3
Page: 181-188
Publish at: 2016-09-01

Self-Tuning Geometric Control for a Quadrotor UAV Based on Lyapunov Stability Analysis

10.11591/ijra.v5i3.pp136-150
Farhad Goodarzi
A Lyapunov-based self gain tuning geometric nonlinear controller for a quadrotor UAV has been developed on SE(3) in this paper. By designing an adaptive law with Lyapunov stability analysis for the controller gains, the proposed control system can asymptotically follow an attitude and position command while tuning the PID gains online, and it is extended to guarantee boundedness of tracking errors in the presence of unstructured disturbances. This introduce an unprecedented algorithm to autonomously tune the controller gains without need of extra effort or introducing boundary conditions. Proposed controller considers all the coupling effects between rotational and translational dynamics, and it is developed in a coordinate-free fashion to avoid complexities and ambiguities associated with other attitude representations such as Euler angles or quaternions. The desirable features of the proposed controller are illustrated by numerical simulations and juxtaposed with a well-known offline gain tuning method. The proposed algorithm is ultimately validated with an experimental example.
Volume: 5
Issue: 3
Page: 136-150
Publish at: 2016-09-01

The Effects of Modified Games on the Development of Gross Motor Skill in Preschoolers

10.11591/ijere.v5i3.4542
Indah Lestari , Tri Ratnaningsih
Gross motor skills on children must be optimized much earlier since it plays important role not only on their interaction process but also in supporting other multiple developments. One of the means in developing child's motor skill is by providing innovative games i.e. modified games including game format, game timing, and game sequence. The objective of this research was to prove the effects of modified games to the development of gross motor skill of preschoolers. Research method was pre-experimental with One Group Pre-post test Design approach. Research samples were the students of Group B Kindergarten in the districts of Gedeg as many as 180 students which were conducted by using purposive sampling. Research instrument was observation during one month. The data was analyzed by Wilcoxon sign rank test. The results suggested that there was effect of modified games to the development of preschool gross motor skill with p-value = 0.000. Changes on motor skill development were obtained from those who were initially on the beginning stage, as many as 101 respondents, became 14 respondents after intervention. Development stage proceeded as expected, from initial 65 respondents the number increased to 130 respondents. At the end of the intervention, there were even 36 respondents whose development stage beyond where they were supposed to be. This proved that the provision of modified games had positive effects on physical, cognitive, and social development. Modified games triggered children's interest and made them be willing to train their activities as well as muscle development, decreased saturation, and improved their skills in a fun way.
Volume: 5
Issue: 3
Page: 216-220
Publish at: 2016-09-01

A New Approach to the Solution of Robot Kinematics Based on Relative Transformation Matrices

10.11591/ijra.v5i3.pp213-222
Mohammad Reza Elhami , Iman Dashti
In analyzing robot manipulator kinematics, we need to describe relative movement of adjacent linkages or joints in order to obtain the pose of end effector (both position and orientation) in reference coordinate frame. Denavit-Hartenberg established a method based on a 4×4 homogenous matrix so called “A” matrix. This method used by most of the authors for kinematics and dynamic analysis of the robot manipulators. Although it has many advantages, however, finding the elements of this matrix and link/joint’s parameters is sometimes complicated and confusing. By considering these difficulties, the authors proposed a new approach called ‘convenient approach’ that is developed based on “Relative Transformations Principle”. It provides a very simple and convenient way for the solution of robot kinematics compared to the conventional D-H representation. In order to clarify this point, the kinematics of the world known Stanford manipulator has been solved through D-H representation as well as convenient approach and the results are compared.
Volume: 5
Issue: 3
Page: 213-222
Publish at: 2016-09-01

Performance Evaluation of Heterogeneous Network Based on RED and WRED

10.11591/ijeecs.v3.i3.pp540-545
Wisam Mahmood Lafta , Saba Qasim Jabbar , Guangzhi Ma
The developing of wireless networks becomes a very important issue nowadays, since it is considered as an easy-using tool without building new infrastructure to cover a wide working area. Applying TCP protocols with the application demands are implemented this work by considering heterogeneous environment of wireless networks connecting with wired networks. The TCP congestion is critical problem is faced heterogeneous environments, this problem is appeared through sending and receiving huge data from wireless networks to wired networks and vice versa. This work is proposed a new approach of using active queue management (AQM) technique with random early detection (RED) and weight random early detection (WRED) strategies to avoid the expected congestion between the heterogeneous environments. Our simulation results show that the quality of service (QoS) is improved by reducing the queue delay and buffer usage, and by increasing the average throughput and utilizationof the system. The simulation is carried out by using OPNET software to test the proposed models for different scenarios.
Volume: 3
Issue: 3
Page: 540-545
Publish at: 2016-09-01
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