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INDONESIA
Indonesian Journal of Electrical Engineering and Computer Science
Published by Institute of Advanced Engineering and Science
ISSN : 25024752     EISSN : 25024760     DOI : -
Core Subject :
Arjuna Subject : -
Articles 9,226 Documents
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Sequence Phase Analysis of Phased Rectifier Chen Zhong-Xiao; Li Yan-Fang; Zhang Li-Guang; Chen Xing-Yu
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 5: May 2013
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

At present, three-phase bridge type full controlled is the most widely applied in all kinds of rectifier circuit. To guarantee the normal work of the phase control circuit, it is the most important thing that should be according to the size of the triggering angle at the right moment to the thyristor trigger of the circuit on effective puls. Nature commutation point is the earliest time of the thyristor trigger conduction, it is the starting point of thyristor trigger calculation angle, if want to change the size of the thyristor can only be based on this increase. It is difficult that to find a natural commutation point of the rectifier circuit. Find nature commutation point can be analyzed corresponding thyristor turn-on. But generally find natural commutation point will be lag behind, lead to trigger angle lags behind, according to this problem can make anyone phase voltage delay after zero, so natural commutation point can make the output voltage to achieve maximum. In fact, the above process is to realize sequence analysis and sequence adaptive. DOI: http://dx.doi.org/10.11591/telkomnika.v11i5.2460
Technical Approach in Text Mining for Stock Market Prediction: A Systematic Review Mohammad Rabiul Islam; Imad Fakhri Al-Shaikhli; Rizal Bin Mohd Nor; Vijayakumar Varadarajan
Indonesian Journal of Electrical Engineering and Computer Science Vol 10, No 2: May 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v10.i2.pp770-777

Abstract

Text mining methods and techniques have disclosed the mining task throughout information retrieval discipline in the field of soft computing techniques. To find the meaningful information from the vast amount of electronic textual data become a humongous task for trading decision. This empirical research of text mining role on financial text analysing in where stock predictive model need to improve based on rank search method. The review of this paper basically focused on text mining techniques, methods and principle component analysis that help reduce the dimensionality within the characteristics and optimal features. Moreover, most sophisticated soft-computing methods and techniques are reviewed in terms of analysis, comparison and evaluation for its performance based on electronic textual data. Due to research significance, this empirical research also highlights the limitation of different strategies and methods on exact aspects of theoretical framework for enhancing of performance.
Small Scale Unmanned Underwater Remotely Operated Crawler (ROC) Mohd Shahrieel Mohd Aras; Muhammad Nizam Kamarudin; Muhammad Hanif Bin Che Rusli; Muhammad Iktisyam Mohd Zainal
Indonesian Journal of Electrical Engineering and Computer Science Vol 3, No 3: September 2016
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v3.i3.pp481-488

Abstract

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.
Efficiency Comparaison and Evaluation between Two ETL Extraction Tools Abdellah Amine; Rachid Ait Daoud; Belaid Bouikhalene
Indonesian Journal of Electrical Engineering and Computer Science Vol 3, No 1: July 2016
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v3.i1.pp174-181

Abstract

In the prospects of making an array of onboard decision support in a public university, we present a comparison between two ETL extraction tools from a production database containing student information.For the implementation we use Pentaho and Sql Server tools and we illustrate the application on the case of Sultan Moulay Slimane University inBeniMellal, Morocco.
Intrusion detection system and technology of layered wireless sensor network based on Agent Genjian Yu; Kunpeng Weng
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 8: August 2013
Publisher : Institute of Advanced Engineering and Science

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Abstract

The intrusion detection system and technology of classified layered-wireless sensor network was able to meet the high safety requirements of wireless sensor network, it is urgent for us to improve the identification and generalization of detection system about characters of intrusion. In this paper, we design an intelligent intrusion detection system which realize intelligence, the effective and direct way was to add the methods,  and it was used for identification and generalization of intrusion characters to the Agent function of intrusion detection. It could obtain credible judgment by updating and examining the database for the actions which the general misuse detection or anomaly detection were not sure if the intrusion was formed. DOI: http://dx.doi.org/10.11591/telkomnika.v11i8.2347
Agricultural Knowledge Grid Construction Tan Cuiping; Zheng Huaiguo; Zhang Junfeng; Sun Sufen; Li Guangda
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 9: September 2013
Publisher : Institute of Advanced Engineering and Science

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Abstract

In order to eliminate the ambiguity in semantic understandings during the retrieval of the users, as well as mining the relationship between the concept of agricultural knowledge, the association of knowledge among heterogeneous databases needs to be set up, which enable users to discover useful knowledge clues, and gradually form solution for the ultimate question. Based on the characteristics of agricultural knowledge and the achievements of knowledge grid research, with a combination of traditional agricultural thesauri and ontology technology, the agricultural knowledge grid was constructed with the resource layer, semantic layer and user level. It has been applied for semantic extension on retrieval, knowledge links, and knowledge reasoning diagnosis. It gains some achievements, which provide technical support and experience for the deeply agricultural knowledge services. DOI: http://dx.doi.org/10.11591/telkomnika.v11i9.3272 
Dental lasers applications in visible wavelength operational band Mahmoud M. A. Eid; Iraj Sadegh Amiri; Ahmed Nabih Zaki Rashed; Preecha Yupapin
Indonesian Journal of Electrical Engineering and Computer Science Vol 18, No 2: May 2020
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v18.i2.pp890-895

Abstract

There is no doubt that radiation has many side effects in our lives, so our goal in this study is to reduce our use of radiation in the diagnosis of tooth caries, and in order to achieve this goal we used the field of optical fiber in the detection of some diseases associated with oral and dental medicine. This diagnosis was accomplished by shedding light on the teeth, to be diagnosed and creating an image that allows the doctor to examine them and determine whether there are caries or any root problems. The principle is also used to detect oral cancer, fractures, and cracks in bones. This study also allows us to detect early caries, and this method saves time because it gives the diagnosis at the same time while the patient is in the treatment unit of the dental clinic. Thus the main advantages of this method are, enable the dentist to view images on the display unit attached to the clinic in real-time, compare current photos with old photos of the same patient. Also, the dentist can create a photo archive of each tooth individually and can retrieve and compare them whenever he wants.    
Knowledge Shift Model of Strategic Alliance Based on Prisoner's Dilemma and Snowdrift Game Ai Hong Shan; Zhang Yabin
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 3: March 2014
Publisher : Institute of Advanced Engineering and Science

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Abstract

According to the development trend of the act of China's current strategic alliance, this paper elaborates the reason why the success rate of strategic alliance is not high from game theory. The mathematical model based on prisoner's dilemma game and snowdrifts game; synthesize the relevant factors of impacting the revenue sharing of enterprise knowledge alliance. Through analysis, it finds that the strategic alliance is a dynamic process of growth. In each stage of the process, because internal and external environment, business processes, customers, the market reaction and other external conditions as well as internal conditions, such as bearing and sharing mechanisms of the risks and benefits between alliance partners change, which brings enormous difficulties to maintain and develop strategic alliance . Due to the different strategic objectives, work efficiency, learning ability and other conditions, the alliance partners need to pay attention to coordination to make flexible and creative reforms. DOI : http://dx.doi.org/10.11591/telkomnika.v12i3.4504
Quality Evaluation Methods of Development Process of Complex Electromechanical Device Yang Liangen; Zheng Lin
Indonesian Journal of Electrical Engineering and Computer Science Vol 10, No 6: October 2012
Publisher : Institute of Advanced Engineering and Science

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Abstract

This paper describes the design of the overall structure about evaluation system of the development process of complex electromechanical device, and analyzes quality evaluation of the stage of scheme design in detail. An evaluation index system of quality of development process is proposed based on resources and conditions, technical status control, management control. Take the evaluation of scheme design stage of ship development as an example, evaluation index system at that stage is established and optimized.  DOI:http://dx.doi.org/10.11591/telkomnika.v10i6.1412
Flux Switching Permanent Magnet Motor using Segmented Outer Rotor Structure for Electric Scooter Enwelum Mbadiwe I; Erwan Sulaiman
Indonesian Journal of Electrical Engineering and Computer Science Vol 6, No 2: May 2017
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v6.i2.pp379-386

Abstract

Flux switching motor is a type of electric machine that locates both flux source and armature windings on the stator leaving its rotor a simple piece of iron. This machine was developed by combining the toothed stator structure of induction machine and the toothed rotor structure of switched reluctance machine together. Furthermore, it has three types of flux sources which include permanent magnet. Conventionally, the toothed kind of rotor has dominated machines rotor design and has been known for high manufacturing cost and iron loss, resulting to low performance. This calls for worry and the need to overcome it and also reduce the manufacturing cost while securing high torque. This paper presents flux switching permanent magnet motor employing segmented outer rotor for high torque capability. 2D-FEA using JMAG to investigate the motor characteristics in terms of flux linkage, Induce back-emf, cogging torque, maximum average torque and efficiency. Finally, preliminary results and comparison revealed that motors employing segmented rotor are capable of higher torque than conventional toothed rotor.

Page 211 of 923 | Total Record : 9226

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