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23,675 Article Results

Photonic Crystal Slab Add-Drop Filter

10.11591/ijaas.v2.i3.pp133-136
Mohammad Reza Rakhshani , Mohammad Ali Mansouri-Birjandi
A new type of optical add drop filter (ADF) based on slab photonic crystals resonant cavities is proposed. ADF operation is based on coupling between the photonic crystal waveguides. Using the finite difference time domain (FDTD) method and plane wave expansion (PWE) method, the ADF characteristics and band structure of the filter, respectively are obtained. The proposed structure is optimized to work as an ADF. Dropping efficiency at 1560nm and quality factor (Q) of our proposed structure are 90% and 195, respectively. The quantities of quality factor and transmission efficiency are suitable for optical applications. This structure is highly attractive for photonic integrated circuits (PICs).
Volume: 2
Issue: 3
Page: 133-136
Publish at: 2013-09-01

Computational Method on the Shearer Position

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2601
Zhipeng Xu
According to problems such as low accuracy, high error in the shearer body position, this paper proposes a new computational method combining with the information of shearer, scraper conveyor and hydraulic support in order to realize three machine positioning. Using the sensor information and static-dynamic fusion, this paper solves positioning problem of the three-dimensional in the process of the shearer movement, and derive the relevant formula. Through the laboratory simulation experiment and industrial field experiments of Xi'an Coal Mining Machinery Co., Ltd show that this system can effectively improve the precision and stability of the fuselage orientation, so as to provide security for realizing the memory of shearer cutting and remote control. DOI: http://dx.doi.org/10.11591/telkomnika.v11i9.3239 
Volume: 11
Issue: 9
Page: 4990-4996
Publish at: 2013-09-01

Manufacturing of Bricks in the Past, in the Present and in the Future: A state of the Art Review

10.11591/ijaas.v2.i3.pp145-156
Alaa A. Shakir , Ali Ahmed Mohammed
The most basic building material for construction of houses is the conventional brick. The rapid growth in today’s construction industry has obliged the civil engineers in searching for more efficient and durable alternatives far beyond the limitations of the conventional brick production. A number of studies had taken serious steps in manufacturing bricks from several of waste materials. However, the traditional mean of bricks production which has brought hazardous impacts to the context has not yet been changed or replaced by more efficient and sustainable one. This paper aims to compile this state of the art work of manufacturing bricks in the past and the current trend in the bricks industry with respect to the raw materials, ways of manufacturing and the out- comings. Moreover, the hazardous impacts of the conventional brick manufacturing will be wholly covered as well as the attempts of the previous researches in treating the problem properly. This paper is an attempt to fill the gap of the past studies and suggest more sustainable and sophisticated methods of brick manufacturing in the future.
Volume: 2
Issue: 3
Page: 145-156
Publish at: 2013-09-01

Percentiles of Range: Pareto Type Model

10.11591/ijaas.v2.i3.pp141-144
R. Subba Rao , G. Prasad , R. R. L. Kantam
Statistical quality control relates heavily on the goodness of control chart limits. The more accurate those limits are, the more likely are to detect whether a process is in control. Various procedures have been developed to compute good control limits. This paper proposes construction of Range chart by considering a Pareto distribution of IV kind. The cumulative distribution function of sample range from their distribution is derived. The percentiles of the distribution of range are worked out and are used to construct the control limits. The performance of the control chart is compared with that of gamma based control chart. Interval estimation for the scale parameter is also worked out.
Volume: 2
Issue: 3
Page: 141-144
Publish at: 2013-09-01

Advantages of Computer Intelligent Simulation on Taijiquan Teaching

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2653
Meng Xue
This paper firstly analyzes the advantages of computer intelligent simulation teaching. On this basis it combines with the characteristics of Taijiquan teaching. Based on the analysis of mathematic model, it applies the advantages of computer intelligent simulation in Taijiquan Teaching to further deepen and construct optimized Taijiquan teaching model based on computer intelligent simulation. It enhances the systematicness and practicality of teaching system in the field of Taijiquan teaching, which plays a great promoting role on deepening the research of Taijiquan teaching to improve learners′ technical level. DOI: http://dx.doi.org/10.11591/telkomnika.v11i9.3293  
Volume: 11
Issue: 9
Page: 5371-5377
Publish at: 2013-09-01

Curb parking in Campus and Stimulating Students to use Public Bus within National University of Malaysia (UKM) Campus

10.11591/ijaas.v2.i3.pp105-112
Alaa A. Shakir , Ali Ahmed Mohammed
Given the great demand for parking and the implications in the environmental of commuting, universities not in the national university of Malaysia (UKM) only but around the world are implementing strategies to reduce dependence on private vehicles and increase the use of alternative modes of transport. That it must be that the system provides transportation comfort, save the time and be a friend of the environment. Were distributed in n= 80 samples for a survey of students to know the behavior of the student for transportation provided on campus. Noted in the questionnaire that focused on graduate students because they represent the largest proportion. In this questionnaire was to know about student behavior and prevent parking on campus and what is reason that prevents students from turning to public transport within the campus. The results shows that 65% use own vehicle and 35 % use public bus which shows the size of problem.
Volume: 2
Issue: 3
Page: 105-112
Publish at: 2013-09-01

Wireless Sensor Network Path Optimization Based on Hybrid Algorithm

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2650
Zeyu Sun , Zhenping LI
One merit of genetic algorithm is fast overall searching, but this algorithm usually results in low efficiency because of large quantities of redundant codes. The advantages of ant colony algorithm are strong suitability and good robustness while its disadvantages are tendency to stagnation, slow speed of convergence. Put forward based on improved ant colony algorithm for wireless sensor network path optimization approach will first need to pass the data in the shortest path for transmission, assuming that transmission path jam, it will clog information sent to the initial position, so the follow-up need to pass data can choose other reasonable path so as to avoid the defects of the traditional method. Genetic ant colony is proposed to avoid the faults of both algorithms above. The proposed algorithm determines distribution of pheromones on path through fast searching and changing the operation of selection operator, crossover operator and mutation operator of genetic ant colony, and then solves the problems efficiently through parallelism, positive feedback and iteration of ant colony algorithm. Therefore, the faults of both algorithms are conquered and the aim of combinational optimization is achieved. At last, the validity and feasibility is demonstrated by means of simulation experiment of traveling salesman problem. DOI: http://dx.doi.org/10.11591/telkomnika.v11i9.3290 
Volume: 11
Issue: 9
Page: 5352-5358
Publish at: 2013-09-01

Learning the Course of Design and Analyze of Computer Algorithms via Online Coding

https://ijere.iaescore.com/index.php/IJERE/article/view/4444
Jianwei Liao , Xiaoyan Liu
The course of design and analysis of computer algorithms is one of the core-course of computer science education; this paper presents an online coding framework to help students to learn the course of design and ananlysis of computer algorithms and other coding-related courses in computer science. With the online coding framework, a student can edit code in any web browser, and then executes it. This online coding framework can connect teachers, curriculum authors, and students in a unique social experience by tracking and streaming progress updates in real time. In particular, with the newly proposed framework, it is not difficult to find interesting and unexpected input values during students’practicing, and then help them to understand what their code is actually doing.DOI: http://dx.doi.org/10.11591/ijere.v2i3.2570
Volume: 2
Issue: 3
Page: 107-111
Publish at: 2013-09-01

Effect of Internet Browsing on Students’ Academic Achievement at the Senior Secondary School Level

https://ijere.iaescore.com/index.php/IJERE/article/view/4446
Sunday Paul Adegoke
The use of internet has been widely accepted as a way of improving students’ performance in several subjects area. However, there is dearth of studies on the relationship between internet browsing, and students’ achievement in school subjects such as Agricultural Science. This study therefore, sought to investigate the relationship between internet browsing and students’ achievement in Agricultural Science. A sample of 300 students was drawn from 10 schools from the five local government areas of Ogbomoso. Internet Browsing Pattern Questionnaire (IBPQ) and Agricultural Achievement Test (AAT) were used to collect data. Cronbach alpha correlation coefficient of 0.807 (IBPQ) and 0.9531 (AAT) were estimated for the instruments. Four research questions were answered. Descriptive statistics and Pearson moment correlation were used to analyze data. Majority of the students have access to the internet. Most of the students that have access to the internet browse more for non-educative information (socio-networking sites).The relationship between internet browsing and students’ achievement in Agricultural Science through positive is not significant.DOI: http://dx.doi.org/10.11591/ijere.v2i3.2430
Volume: 2
Issue: 3
Page: 123-128
Publish at: 2013-09-01

Generalized SVPWM Algorithm for Two Legged Three Phase Multilevel Inverter

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/4953
Devisree Sasi , Jisha Kuruvilla P , Anish Gopinath
This paper establishes the inherent fractal structure in the space vector representation of two legged three phase multilevel inverters. The established fractal structure is utilized to propose a generalized algorithm for space vector PWM generation for two legged multilevel inverters. The voltage space vectors of higher level inverters can be generated from the voltage space vectors of equivalent 2-level inverter. The proposed algorithm can be easily extended to n-level inverters without any computational complexity and it doesn’t use any look up table for sector identification. The paper explains the proposed method for 5-level inverter and simulation results are presented for 2-level, 3-level and 5-level configurations in MATLAB/SIMULINK.DOI: http://dx.doi.org/10.11591/ijpeds.v3i3.4099
Volume: 3
Issue: 3
Page: 279-286
Publish at: 2013-09-01

An Evaluation of language Ontology Web Based Assessment System

https://ijere.iaescore.com/index.php/IJERE/article/view/4445
Taurayi Rupere
The field of e-learning has improved tremendously in the past decade with the invention of all kinds of e-leaning systems contributing to the quality of education. The undertaken research seek to improve web assessment systems which are limited to multiple choice type of assessment which is summative assessment that does not have a feedback section to students hence promote limited learning. The proposed system uses ontologies to promote formative assessment with a feedback loop to the students. The structured type of questions are now implemented in web assessment systems instead of using multiple choice type of questions which have limitations in terms of functionality when it comes to marking textual answers due to wide variety of words that can mean the same thing. The designed system was implemented using an ontology based dictionary which generates all possible solution for a particular question and uses aspects of artificial intelligence. The system was applied to two primary schools students doing grade 4 levels. Students wrote a test that was marked by both the system and teacher. Results from the study showed that the system marks as close to the human examiner and is the ideal assessment and marking if implemented well.DOI: http://dx.doi.org/10.11591/ijere.v2i3.2257
Volume: 2
Issue: 3
Page: 112-122
Publish at: 2013-09-01

Active vs Passive Dictation

https://ijere.iaescore.com/index.php/IJERE/article/view/4447
Mozhgan Alsadat Ghaffarzadeh Hassankiadeh
This paper concentrates on dictation as a beneficial tool in both teaching and testing.  The goal is to discuss about the points that were ignored during the years in foreign language classes. In fact this paper aims at investigating helpful techniques in reviving active dictation. Here some discussion is presented theoretically about the strategies that can be used to assist learners to develop the other skills during dictation sessions. An effective tool that can help teachers and learners during language teaching/learning processes to promote learning is dictation, if it is utilized in a proper procedure while considering all four skills in learning a foreign/second language. So the significance of the topic leads the researcher to study it. The aim is to identify the most appropriate strategies in using dictation in the classroom that may assist learners in learning a language communicatively. Therefore the current study came to existence to gain this target and to present some techniques to help in promoting such skills in language classes.DOI: http://dx.doi.org/10.11591/ijere.v2i3.1717
Volume: 2
Issue: 3
Page: 129-134
Publish at: 2013-09-01

A Shearlets-based Edge Identification Algorithem for Infrared Image

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2627
Rui-bin ZOU , Cai-cheng SHI
A shearlets-based edge identification algorithem for infrared image is proposed. The algorithem demonstrates the performance of edge detection based on shearlets, combines with the edge hysteresis thresholding, designs steps of edge detection, which is proper to use in infrared images.Simultaneously, with the advantage of edge geometric features provided by the shearlets, infrared image were extracted the direction information of edge of Infrared image, and classified. In computer simulations with this method for infrared image,simulation results conformed to the theory on edge detection based on shearlets. It drew the outline of edge for infrared image, and provided the edge orientation feature. The method is very eventful for target detection, identification, track in infrared image system. DOI: http://dx.doi.org/10.11591/telkomnika.v11i9.3266
Volume: 11
Issue: 9
Page: 5182-5188
Publish at: 2013-09-01

Analytical method of the impact of distributed generation on static voltage stability of distribution network and its development

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2605
YANG zhichun
It can’t be ignored that the impact of distribution network to the static voltage stability of the distributed generation. In this paper, we first introduce the stability indices of the traditional grid on static voltage and the analytical method, in the mean time, we put forward the corresponding advantages and disadvantages and applicable scope. Then, we present a summary of the current research on the impact of distribution network to the static voltage stability of the distributed generation at home and abroad from the two aspects of the static voltage stability indices and analytical methods. In the end, the paper points out a new way to improve the distribution network static voltage stability that with the consistency theory to achieve coordinated control of distributed generation, microgrid, as well as virtual power plants, which will be more advantage. This article has a reference value for the analysis of the impact of distributed generation on static voltage stability of the distribution network, as well as researches the measures to improve the static stability. DOI: http://dx.doi.org/10.11591/telkomnika.v11i9.2255
Volume: 11
Issue: 9
Page: 5018-5029
Publish at: 2013-09-01

The Teachers’ Professional Competence Role in Implementing School-Based Management: Study Analisys at Secondary School in Pare-Pare, South Sulawesi Province, Indonesia

https://ijere.iaescore.com/index.php/IJERE/article/view/4449
Syahruddin Lasadike , Andi Ernawati , Mohd. Anuar B. Abdul Rahman , Ahmad Johari B. Sihes
This study aims to identify the teachers’ professional competence role in the implementation of School-Based Management (SBM). It was conducted at Junior Secondary Schools in Pare-Pare, South Sulawesi Province, Indonesia. It used the mixed method, include survey and interview methods. Its result showed that the teachers’ professional competence has a significant impact towards the implementation of SBM. Furthermore, one of  the important strategies in improving the quality of SBM is the teachers’ professional development in order to enhance teachers’ performance, commitment, and motivation.DOI : http://dx.doi.org/10.11591/ijere.v2i3.2577
Volume: 2
Issue: 3
Page: 143-148
Publish at: 2013-09-01
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