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29,905 Article Results

A Reliability and Validity of an Instrument to Evaluate the School-Based Assessment System: A Pilot Study

10.11591/ijere.v5i2.4533
Nor Hasnida Md Ghazali
A valid, reliable and practical instrument is needed to evaluate the implementation of the school-based assessment (SBA) system. The aim of this study is to develop and assess the validity and reliability of an instrument to measure the perception of teachers towards the SBA implementation in schools. The instrument is developed based on a conceptual framework developed by Daniel Stufflebeam, that is the CIPP (context, input, process and product) Evaluation Model. The instrument in the form of questionnaire is distributed to a sample of 120 primary and secondary school teachers. The response rate is 80 percent. The content validity is assessed by the experts and the construct validity is measured by Exploratory Factor Analysis (EFA). The reliability of the instrument is measured using internal consistence reliability, which is measured by alpha coefficient reliability or Cronbach Alpha. The finding of this pilot study shows that the instrument is valid and reliable. Finally, out of 71 items, 68 items are retained.
Volume: 5
Issue: 2
Page: 148-157
Publish at: 2016-06-01

Using a Mobile Robot with Interpolation and Extrapolation Method for Chemical Source Localization in Dynamic Advection-diffusion Environment

10.11591/ijra.v5i2.pp87-97
Xiang Gao , Levent Acar
this paper address the problem of mapping likely particle path derived from a chemical source using interpolation and extrapolation method. Order localization is the problem of finding the source of an odor or other volatile chemical. Most localization method require the robot to follow the odor plume along its entire length, which is time consuming and may be especially difficult in a cluttered environment. In this paper, a map of sensors’ environment was used, together with the path line of airflow, to predict the pattern of air movement. The robot then used the airflow pattern to reason about the probable location of the odor source. This demonstrates that interpolation and extrapolation method can be used to assist odor localization search and indicates that similar techniques have great operating in an unstructured environment to reason about its surroundings. This paper present details of getting the model of particle path using interpolation and extrapolation method, model of particle path surrounding the obstacles and openings, result of practical odor source location simulation.
Volume: 5
Issue: 2
Page: 87-97
Publish at: 2016-06-01

The Relationship between Religiosity and Academic Performance amongst Accounting Students

10.11591/ijere.v5i2.4535
Umaru Mustapha Zubairu , Olalekan Busra Sakariyau
In this paper, the association between religiosity and academic performance among accounting students enrolled at the International Islamic University Malaysia (IIUM) is explored, as recent research demonstrates a positive association between religiosity and academic success. Students' religiosity was measured using proxies from an Islamic perspective, whilst their academic performances were measured using their Cumulative Grade Point Averages (CGPA). The statistical analysis revealed no significant correlation between religiosity and academic performance among accounting students at IIUM. However, a closer examination of the results revealed that students at IIUM possessed high levels of religiosity as well as high levels of academic performances.
Volume: 5
Issue: 2
Page: 165-173
Publish at: 2016-06-01

Design and Fabrication of Friction Stir Welding End-Effector for an ABB IRB1410 Robot

10.11591/ijra.v5i2.pp98-104
Santosh Vanama
The paper propose modelling and fabrication of friction stir welding end-effector for ABB IRB1410 robot. A dynamically developing version of pressure welding processes, join material without reaching the fusion temperature called friction stir welding. As friction stir welding occurs in solid state, no solidification structures are created thereby eliminating the brittle and eutectic phase’s common to fusion welding of high strength aluminium alloys. In this paper, Friction stir welding is applied to aluminum sheets of 2 mm thickness. A prototype setup is developed to monitor the evolution of main forces and tool temperature during the operation. Pressure of a gripper plays a major role for tool rotation and developing torque.  Fabrication of the tool has done. Force calculations are done by placing the sensors on the outer surface of gripper. Methods of evaluating weld quality are surveyed as well.
Volume: 5
Issue: 2
Page: 98-104
Publish at: 2016-06-01

The Family Parenting Influenced Adolescent Brawls Behavior

10.11591/ijere.v5i2.4531
Heni Nurhaeni , Dinarti Dinarti , Dwi Priharti
There are four types of parenting: democratic, authoritarian, permissive, and ignored, which would affect the character of the child. But family upbringing itself influenced education, norms/cultural, environmental, social, economic and belongs to the family members. quasi-experimental study through questionnaires, observation, deep interview, and interventions against high school Students, Peers, Teachers (BK), and their Parents/Family have been conducted through a random sampling of 108 respondents in four high school set. The result met the test paired T test statistical significance level 0 and T test result of 0.05 shows that the two variables p-value of p=0.00000. Correlation tests showed that there is a relationship between two variables at-0616. This sign (-) means that the test results are negative correlation. Can be seen if the correlation between the two variables is quite high between 0.50 to 1.0 can be concluded that the direction of the relationship between the two variables is negative. These results can be displayed from "if the family provides a strict upbringing will influence behavior in high school brawls in Adolescents will tend to be low and vice versa".
Volume: 5
Issue: 2
Page: 126-134
Publish at: 2016-06-01

Embedded Fuzzy Based Boiler Control

10.11591/ijra.v5i2.pp105-108
Celin S
Boiler control in a power station is a very important criteria in regulation of uninterrupted electricity. In existing power plants, the control of its features and parameters are done by PI and PD controllers. The parameters that control the regulation of boiler conduction are drum level, steam flow, feed water flow, steam temperature and light intensity. It is necessary to produce the steam required to run the generator. When the load in the generator changes, there must be corresponding change in the steam volume. This may cause adverse effect in the boiler. In order to avoid the effect in the boiler, the parameters mentioned above must be maintained constant, which is attained by regulating the corresponding valves. This project work has a feasibility of using fuzzy logic controllers in the place of conventional controllers is done by using embedded system. It is found that the rule based fuzzy logic technique can be implemented by stringent operating conditions. 
Volume: 5
Issue: 2
Page: 105-108
Publish at: 2016-06-01

The Implementation of Cooperative Learning Model ‘Number Heads Together (NHT)’ in Improving the Students’ Ability in Reading Comprehension

10.11591/ijere.v5i2.4536
Mayong Maman , Andi Aryani Rajab
The study aimed at describing the implementation of cooperative learning model of (NHT) at student of SMPN 2 Maros. The method used was a classroom action research in two cycles. Data were collected using the test for the quantitative and non-test for the qualitative by employing observation, field note, student’s workbook, student’s reflection sheet, and test of learning outcomes. The improvement of competence on cycle I was 44% that was categorized as extremely good, 56% were categorized as good, and no student was categorized as low. Cycle II, 84% were classified as extremely good, 16% were grouped as good, and no one was classified as low.
Volume: 5
Issue: 2
Page: 174-180
Publish at: 2016-06-01

Card Games and Algebra Tic Tacmatics on Achievement of Junior Secondary II Students in Algebraic Expressions

10.11591/ijere.v5i2.4527
Okpube Nnaemeka Michael , N. M. Anugwo
This study investigated the Card Games and Algebra tic-Tacmatics on Junior Secondary II Students’ Achievement in Algebraic Expressions. Three research questions and three null hypotheses guided the study. The study adopted the pre-test, post-test control group design. A total of two hundred and forty (240) Junior Secondary School II students were used as sample for this study. The experimental group was taught using games while the control group was taught using the conventional (lecture) method. Algebraic Achievement Test (AAT) was used to collect data for this study. AAT was validated by three experts in mathematics education and measurement and evaluation respectively. The reliability index of AAT was 0.79. Mean and standard deviation were used to answer the research questions while ANCOVA was used to test the hypotheses at 0.05 level of significance. The findings of the study showed among others that there was a significant difference between students taught algebraic expressions with games and those taught without games, there was also a significant difference between the achievement of males and females taught algebraic expressions with games and those taught without games in favour of the males.
Volume: 5
Issue: 2
Page: 93-100
Publish at: 2016-06-01

A Hyperlink based Graphical User Interface of Knowledge Management System for Broiler Production

10.11591/ijeecs.v2.i3.pp668-674
Yusra Fernando , Kudang Boro Seminar , Irman Hermadi , Rudi Afnan
 The level of consumption of animal protein in Indonesia has been increasing. Unfortunately, this increase has not been balanced by the adequate rise stock production.  The use of closed house system for broiler production is very potential to contribute the increase of protein source. The purpose of this research is to build a knowledge management system broiler production management closed house system. Web-based system developed using PHP programming language, and Protégé as processing knowledge representation. This research has developed the concept of knowledge management system with ontology model of semantic network, among the results of this research is a conceptual model, knowledge maps, and prototype production management knowledge management website broiler closed house system. Knowledge management system is equipped with recording system applications. This application is useful to be able to see results in the production of a period of production. The prototype knowledge management website provides links consultancy services for farmers who want to ask about production management. The concept of knowledge management systems can be used as a basis for building a semantic website that can model the process and rules management broiler production closed house system.
Volume: 2
Issue: 3
Page: 668-674
Publish at: 2016-06-01

Optimal Capacitors in Radial Distribution System for Loss Reduction and Voltage Enhancement

10.11591/ijeecs.v2.i3.pp566-582
S. Bhongade , Sachin Arya
The work presented in this paper is carried out with the objective of identifying the optimal location and size (Kvar ratings) of shunt capacitors to be placed in radial distribution system, to have overall economy considering the saving due to energy loss minimization. To achieve this objective, a two stage methodology is adopted in this paper. In the first stage, the base case load flow of uncompensated distribution system is carried out. On the basis of base case load flow solution, Nominal voltage magnitudes and Loss Sensitivity Factors are calculated and the weak buses are selected for capacitor placement.In the second stage, Particle Swarm Optimization (PSO) algorithm is used to identify the size of the capacitors to be placed at the selected buses for minimizing the power loss. The developed algorithm is tested for 10-bus, 34-bus and 85-bus Radial Distribution Systems. The results show that there has been an enhancement in voltage profile and reduction in power loss thus resulting in much annual saving.
Volume: 2
Issue: 3
Page: 566-582
Publish at: 2016-06-01

Photovoltaic Array Maximum Power Point Tracking Based on Improved Method

10.12928/telkomnika.v14i2.2958
Jia; University of Mining and Technology of China Cunliang , Yanxiong; University of Mining and Technology of China Wang , Zerong; No.716 Research Institute Lianyungang Wang
At present, a good deal of methods for the Maximum Power Point Tracking (MPPT) has been used in engineering applications. However, Matlab simulation proved that they were difficult to harmonize the stability and speed ability of system. In addition, in order to maximize the use of PV panels ‘power, the paper focused on aneonatalalgorithm for Maximum Power Point Tracking (MPPT). Based on the algorithm, this paper designed an improved and feasible variable step perturbation and observation method which well alleviated the conflict that the maximum power point tracking could not take into account the stability and speed of response efficiently.
Volume: 14
Issue: 2
Page: 404-410
Publish at: 2016-06-01

Survey: Models and Prototypes of Schema Matching

10.11591/ijece.v6i3.pp1011-1022
Edhy Sutanta , Retantyo Wardoyo , Khabib Mustofa , Edi Winarko
Schema matching is critical problem within many applications to integration of data/information, to achieve interoperability, and other cases caused by schematic heterogeneity. Schema matching evolved from manual way on a specific domain, leading to a new models and methods that are semi-automatic and more general, so it is able to effectively direct the user within generate a mapping among elements of two the schema or ontologies better. This paper is a summary of literature review on models and prototypes on schema matching within the last 25 years to describe the progress of and research chalenge and opportunities on a new models, methods, and/or prototypes.
Volume: 6
Issue: 3
Page: 1011-1022
Publish at: 2016-06-01

Performance Study of Soft Local Binary Pattern over Local Binary Pattern under Noisy Images

10.11591/ijece.v6i3.pp1161-1167
Sabina Yasmin , Md. Masud Rana
In this paper, the performance of soft local binary pattern (SLBP) method has been investigated with edge detection techniques for face recognition in case of noisy condition. Various edge detection techniques such as Canny, Robert and Log methods have been used with SLBP for recognizing faces. The results obtained using SLBP with various edge detection for noisy condition based on image quality measurement shows better recognition rate compared to the results obtained using local binary pattern (LBP). Simplified edge detection methods simplify the images as a result SLBP with edge detection requires less computation time compared with edge detection of LBP.
Volume: 6
Issue: 3
Page: 1161-1167
Publish at: 2016-06-01

Tip Speed Ratio Based MPPT Algorithm and Improved Field Oriented Control for Extracting Optimal Real power and Independent Reactive Power Control for Grid Connected Doubly Fed Induction Generator

10.11591/ijece.v6i3.pp1319-1331
D.V.N. Ananth , Gundavarapu Venkata Nagesh Kumar
Doubly Fed Induction Generator (DFIG) needs to get adopted to change in wind speeds with sudden change in reactive power or grid terminal voltage as it is required for maintaining synchronism and stability as per modern grid rules. This paper proposes a controller for DFIG converters and optimal tip speed ratio based maximum power point tracking (MPPT) for turbine to maintain equilibrium in rotor speed, generator torque, and stator and rotor voltages and also to meet desired reference real power during the turbulences like sudden change in reactive power or voltage with concurrently changing wind speed. The performance of DFIG is compared when there is change in wind speed only, changes in reactive power and variation in grid voltage along with variation in wind speed.
Volume: 6
Issue: 3
Page: 1319-1331
Publish at: 2016-06-01

Efficient D2D Discovery Scheme for Channel Measurement of Interference Alignment

10.12928/telkomnika.v14i2.3148
Zhanjun; Chongqing University of Posts and Telecommunications Liu , Yunpeng; Chongqing University of Posts and Telecommunications Li , Zhonghua; Chongqing University of Posts and Telecommunications Yu , Yue; Chongqing University of Posts and Telecommunications Shen
Device-to-device (D2D) communications have the potential to improve spectrum efficiency and link capacity by allowing nearby devices to communicate directly with each other on the licensed frequency bands. Hence, co-channel interference (CCI) among D2D users are major issues to be solved when they are utilizing the same frequency bands. Consequently, interference alignment (IA) as an effective interference management approach has been implemented to the D2D communications for the frequency sharing. However, the measurement of channel state information (CSI) between transmitter and receiver of a D2D pair and cross-channel state information (C-CSI) among D2D pairs are the major issues that need to be resolved for the implementation of IA from theory to practical. Therefore, in this paper, we propose an effective D2D discovery scheme to overcome this problem, which can measure the CSI and C-CSI based on the transmission of discovery messages. Simulation results show that, under perfect conditions, even though the proposed D2D discovery scheme increases the needed time slots to establish D2D communications compared with the conventional D2D discovery without considering IA by 6.2%, it increases the throughput up to 50% than the conventional D2D communications without considering IA, i.e., it improves the spectrum efficiency. 
Volume: 14
Issue: 2
Page: 548-554
Publish at: 2016-06-01
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