Articles

Access the latest knowledge in applied science, electrical engineering, computer science and information technology, education, and health.

Filter Icon

Filters article

Years

FAQ Arrow
0
0

Source Title

FAQ Arrow

Authors

FAQ Arrow

31,456 Article Results

Application and evaluation of the neural network in gearbox

10.12928/telkomnika.v18i1.13760
Dheyaa Shaheed; Wasit University Al-Azzawi
We developed old designed of a Back-Propagation neural network (BPNN), which it was designed by other researchers, and we made modification in their structure. The 1st velocity ratio was discriminated by lowest speed, and highest twist. The 6th velocity ratio was discriminated by highest speed, and lowest twist. The aim of this paper is to design neural structure get best performance to control an electrical automotive transportation six-speed gearbox of the vehicle. We focus on the evaluation of the BPNN to select the suitable number of layers and neurons. Experimentally, the structure of the proposed BPNN are constructed from four layers: eight input nodes in the first layer that received data in binary number, 45 neurons in 1st hidden-layer, 25 neurons in 2nd hidden-layer, and 6 neurons in the fourth layer. The MSE and number of Epochs are the main factors used for the evaluation of the proposed structure, and compared with the other structures which was designed by other researchers. Experimentally, we discovered that the best value of Epoch and MSE was chosen when the BPNN consisted of two hidden-layers, 45, and 25 neurons in the 1st and 2nd hidden-layer respectively. The implementation was applied using MATLAB software.
Volume: 18
Issue: 1
Page: 19-29
Publish at: 2020-02-01

Augmented reality using features accelerated segment test for property catalogue

10.12928/telkomnika.v18i1.13039
Rudy; Mercu Buana University Setyadi , Indra; Mercu Buana University Ranggadara
Promotional media used in the marketing of housing using catalogs that display 2D images of houses from one side of the house make potential customers unable to imagine the design of all parts of the house. Augmented Reality can be used as an interactive marketing media so that it can be used to display homes in 3D so that they appear more real from all sides so that prospective customers can consider the type of house to be chosen. Development of this application using the Multimedia Development Life Cycle. Application development uses the FAST algorithm as detection of home catalog markers to define how well images can be detected and tracked. The FAST algorithm will calculate every pixel on the target image in determining the corner when scanning the home catalog then it will produce a 3D object home to see the real shape design of the house.
Volume: 18
Issue: 1
Page: 140-147
Publish at: 2020-02-01

Accurate characterizations of material using microwave T-resonator for solid sensing applications

10.12928/telkomnika.v18i1.14880
Rammah A.; Universiti Teknikal Malaysia Melaka (UTeM) Alahnomi , Z.; Universiti Teknikal Malaysia Melaka (UTeM) Zakaria , Zulkalnain Mohd; Universiti Teknikal Malaysia Melaka (UTeM) Yussof , Tole; Universitas Ahmad Dahlan Sutikno , H.; Universiti Teknikal Malaysia Melaka (UTeM) Sariera , Amyrul Azuan; Bayan Lepas Free Industrial Zone Mohd Bahar
The topic of microwave sensors in enclosures is one of the most active areas in material characterization research today due to its wide applications in various industries. Surprisingly, a microwave sensor technology has been comprehensively investigated and there is an industry demand for an accurate instrument of material characterization such as food industry, quality control, chemical composition analysis and bio-sensing. These accurate instruments have the ability to understand the properties of materials composition based on chemical, physical, magnetic, and electric characteristics. Therefore, a design of the T-resonator has been introduced and investigated for an accurate measurement of material properties characterizations. This sensor is designed and fabricated on a 0.787 mm-thickness Roger 5880 substrate for the first resonant frequency to resonate at 2.4 GHz under unloaded conditions. Various standard dielectric of the sample under test (SUT) are tested to validate the sensitivity which making it a promising low-cost, compact in size, ease of fabrication and small SUT preparation for applications requiring novel sensing techniques in quality and control industries.
Volume: 18
Issue: 1
Page: 99-105
Publish at: 2020-02-01

Light follower systems for visually impaired using visible light communication

10.12928/telkomnika.v19i1.16509
Arsyad Ramadhan; Institut Teknologi Nasional Bandung Darlis , Lucia; Institut Teknologi Nasional Bandung Jambola , Tedi; Institut Teknologi Nasional Bandung Hadyansyah
Visual impairment is the condition of someone who has a disorder or an obstacle in their vision. In this research, the implementation of light follower systems for visually impaired using visible light is proposed. This system can enable visually impaired people to determine orientation and support mobility, especially in an indoor situation, using visible light. The prototype of the visually impaired pathway was made as visible light communication (VLC) transmitter consisting of a 12 V power supply, light emitting diode (LED), MPEG-1 Layer-3 (MP3), and band pass filter (BPF) filter circuit. The VLC receiver is made a prototype of a blind stick consisting of a photodiode, amplifier, buzzer, timer, and 9 V battery. The measurement of this system uses acrylic and color filters with system accuracy taking into account the angle and conditions when the fluorescent lights are turned on and off. This result showed the system could transmit audio signals at a frequency of 3000 Hz. Furthermore, the comparison results showed that the quality of measurements without using a filter is better than using a filter. The output voltage value without using a filter with an angle of 700 degree is 7.19 Vp-p, meanwhile using a filter with an angle of 700 degree is 6.48 Vp-p.
Volume: 19
Issue: 1
Page: 9-18
Publish at: 2020-02-01

The measurement of maturity level of information technology service based on COBIT 5 framework

10.12928/telkomnika.v18i1.10582
Lanto Ningrayati; Universitas Negeri Gorontalo Amali , Muhammad Rifai; Universitas Negeri Gorontalo Katili , Sitti; Universitas Negeri Gorontalo Suhada , Lillyan; Universitas Negeri Gorontalo Hadjaratie
Institutions are currently progressing on IT development and maximization in order to advance for good IT governance. Lack of comprehensive requirements analysis of IT utilization may lead to hindrances within IT development from achieving effective outcomes. This quantitative study employs control objective for information & related technology (COBIT 5) business framework to assess and identify the maturity level of IT service, primarily within the domain of delivery, service, and support (DSS). Data were obtained through questionnaire, observation, and documentation. The result reveals that the average maturity level of IT service is in level 3 (established); by which the study recommends for enhancements and upgrades in IT performance and service within the scope of compliance and IT service application and support.
Volume: 18
Issue: 1
Page: 133-139
Publish at: 2020-02-01

A compact size microstrip five poles hairpin band-pass filter using three-layers structure for Ku-band satellites application

10.12928/telkomnika.v18i1.13199
Qazwan; University Malaysia Pahang Abdullah , Nor Shahida; Universiti Tun Hussein Onn Malaysia Mohd Shah , Nabil; Universiti Teknikal Malaysia Melaka Farah , Waheb A.; University Malaysia Pahang Jabbar , Noorsaliza; Universiti Tun Hussein Onn Malaysia Abdullah , Adeeb; Universiti Tun Hussein Onn Malaysia Salh , Jameel A. A.; Universiti Tun Hussein Onn Malaysia Mukred
This paper presents a reduced size microstrip five poles hairpin band-pass filter using three-layers structure for Ku-band satellites application. The three-layers structure shows a substantially reduced filter size and enlarged bandwidth. The filter has been designed based on five-pole resonators at 12.475 GHz and bandwidth of 550 MHz. This filter is designed on Rogers RO3003 substrate having relative permittivity (εr) of 3. The proposed band-pass filter has been designed with the help of Computer Simulation Technology (CST) software. Comparison analyses between the simulated insertion loss and reflection coefficient of RO3003 and FR4 substrates have been carried out in order to show the efficiency of the proposed filter design. Based on the obtained results, the proposed filter design achieves significant filter size reduction compared to other band-pass filters.
Volume: 18
Issue: 1
Page: 80-89
Publish at: 2020-02-01

Technology readiness and usability of office automation system in suburban areas

10.12928/telkomnika.v18i2.13355
Dwi; STMIK Sumedang Yuniarto , A’ang; UIN Syarif Hidayatullah Jakarta Subiyakto , Aedah; Asia E University Malaysia Abd. Rahman
Readiness and usability issues are important attributes of an information system (IS) success. Currently, IS studies that have been assessing the issues in suburban areas are still limited. The purpose of this study was to measure the above-mentioned phenomena by combining the readiness and usability models. The proposed model consisted out 10 constructs with 25 indicators. The four constructs were from the readiness model and the six ones were the usability model. The 89 samples were collected using an online survey based on purposive random sampling. Partial least squares structural equation modeling (PLS-SEM) method with SmartPLS 3.2.8 was used for analyzing the data. The findings may have contributed to the IS research field, in terms of the readiness and usability issues on the IS use in a suburban area in Indonesia.
Volume: 18
Issue: 2
Page: 676-684
Publish at: 2020-02-01

A high frequency reflected current signals-based fault type identification method

10.11591/ijeecs.v17.i2.pp551-563
Shwe Myint , Warit Wichakool
The main objective of this paper is to identify fault type and faulted phase focus on the time delay values of reflected phase and modal current signals. The proposed method identifies fault type with the help of amplitude maxima of detail wavelet coefficient of residual current. The time delay values of phase and modal current reflected signals are used to detect faulty phase instead of using threshold values. Using time delay as a fault type identification parameter is achieved to save the overall protection system operating time because time delay is also the main feature of traveling wave fault location method. Moreover, to ensure the applied wavelet filter, the proposed algorithm is tested with the detail information of the three mother wavelets, such as db4, db6 and db8 and chosen the highest classification accuracy. Various disturbance events were tested with changing different possible fault types, faulted-feeders, fault resistances, fault locations and fault inception times on a loop distribution system. The robustness of the proposed faulted phase selection algorithm is performed through MATLAB Simulation.
Volume: 17
Issue: 2
Page: 551-563
Publish at: 2020-02-01

Augmented reality an economical solution for engineers and designers

10.11591/ijeecs.v17.i2.pp834-844
Sidra Nasir , Mohammad Noman Zahid , Talha Ahmed Khan , Kushsairy Kadir , Sheroz Khan
Now a days, with obscene workload and a busy life, many experts face problems which more or less result in loss of their customers or to certain overheads that immobilize the customer's satisfaction process. The software being proposed will facilitates professional from various field like in mechanical designing, interior designing and that of architects. This research proposal most likely acts as an effective tool that can reduce the gap between industrial enterprises and customers in addition to other relevant business groups. It helps to visualize architectural designs and interior designs. Before the physical implementation, a virtual model of a real environment can be designed, enabling designers to virtually implement their idea in the given workspace and then view it in a real environment, enabling designers to view their 3D visualizations on their 2D drawings this help them to initially visualize and reconstruct the design without wasting a large amount of money making it a cost-effective solution. Application is based on my observations of the user's aspirations of an augmented reality in design service, a service that combines different social media functionality, augmented reality (AR) and 3-D modeling that embraces the concept of home design, architecture and mechanical designing process. This study connects all users of relevant concerns to an augmented reality's user-intensive design. The paper provides you with the existential complexity of how the AR can be implemented to enhance the work of architects and designers. The proposed application shows two types of reality, marker-less and more marker-based. The new feature of the project is that no expensive devices are required. It can be used easily through smartphones and tablets. This is a cost-effective solution that mainly reduces the overhead accosted daily by, mechanical designers, interior designers and architects. The software displays all the features that mechanical designers, interior designers and architects may need.
Volume: 17
Issue: 2
Page: 834-844
Publish at: 2020-02-01

Evaluating the tracking e-Files prototype project based on the task technology fit model

10.11591/ijeecs.v17.i2.pp728-738
Nassir Jabir Al-khafaji , Riyad Mubarak Abdullah , Mohammed A. Kashmoola
Locating files in an exact time is considered one of the greatest problems and the tedious process in universities nowadays. This problem becomes greater when the university has a large number of departments and transactions, as well as the documents are moving from one department to another. Especially, developing countries that have many problems and unstable environment and that may lead to lost or damage the important documents that influence on the decision making. Furthermore, the traditional manner not only wasted the time and energy, but also the paper cost for printing copies of required file. And with the advancement of technology and the increase of Internet users, documents are still being sent in Iraqi universities manually between departments. Although the higher education and scientific research ministry was recommended the public universities for using modern technologies during the daily transactions between the departments or amongst the units.  Therefore, this study sought to design and evaluate the prototype system which tracks movements of the documents from one department to another as well as check the completion rate for each department. For providing opportunities to assess how well the use of e-file tracking system meets the needs of management units in universities. The systems implementation research notes the need to fit between tasks, technologies and users.  Thus, this empirical study utilized the task technology fit model for this purpose. The results from selected participants indicated that all the factors significant effect on the employee’s performance in E-file Tracking System, excepted, task characteristics. This study will be contributed to reduce the corruption and enhance the transparency and help the decision-makers make the right decision at the right time.
Volume: 17
Issue: 2
Page: 728-738
Publish at: 2020-02-01

A proposed java forward slicing approach

10.12928/telkomnika.v18i1.12655
Rana; Al-Zaytoonah University of Jordan Bader , Basem; Al-Zaytoonah University of Jordan Alukosh , Mohammad; Al-Zaytoonah University of Jordan Abdallah , Khalil; Al-Zaytoonah University of Jordan Awad , Amir; Universiti Malaysia Terengganu Ngah
Many organization, programmers, and researchers need to debug, test and make maintenance for a segment of their source code to improve their system. Program slicing is one of the best techniques to do so. There are many slicing techniques available to solve such problems such as static slicing, dynamic slicing, and amorphous slicing. In our paper, we decided to develop a tool that supports many slicing techniques. Our proposed tool provides new flexible ways to process simple segments of Java code, and it generates needed slicing according to the user needs, our tool will provide the user with direct and indirect dependencies for each variable in the code segments. This tool can work under various operating systems and does not need particular environments. Thus, our tool is helpful in many aspects such as debugging, testing, education, and many other elements.
Volume: 18
Issue: 1
Page: 311-316
Publish at: 2020-02-01

The performance of the vehicular communication-clustering process

10.12928/telkomnika.v18i1.13565
Omar; Philadelphia University Daoud , Ahlam; Philadelphia University Damati , Qadri; Philadelphia University Hamarsheh
For the new wireless systems and beyond, the intelligent transportation system is considered as one of the main features that could be covered in the new research topics. Furthermore, both high-speed data transmission and data processing play a crucial role for these generations. Our work covers two main propositions in order to attain an improvement in such intelligent systems performance. A clustering algorithm is proposed and presented for grouping mobile nodes based on their speeds with some modified head assignments processes. This will be combined with a parallel-processing technique that enhances the QoS. Mainly, this work concerns enhancing the V2V data transmission and the processing speed. Thus, a wavelet processing stage has been imposed to optimize the transmitted power phenomenon. In order to check the validity of such proposition, five main efficiency factors have been investigated; namely complementary cumulative distributions, bit rates, energy efficiency, the lifetime of cluster head and the ordinary nodes reattaching-head average times. 
Volume: 18
Issue: 1
Page: 57-71
Publish at: 2020-02-01

Analysis of energy losses reduction potential on the distribution line of campus building through electric power quality improvement

10.11591/ijeecs.v17.i2.pp868-876
Andi Pawawoi , Zuheldi Zuheldi , Fajril Akbar , Refdinal Nazir
In public and commercial buildings, the reduction of electricity consumption activities can be conducted through 3 paths, including improving the quality level of electric power, increasing the efficiency of electrical equipment, and reducing the waste of electric energy use. In this paper, the energy losses reduction potential on the distribution line of Engineering Faculty, Andalas University buildings through electric power quality improvement are analyzed. Power Quality (PQ) variables that considered in this analysis include power factor, unbalance current load and harmonics distortion. Analysis of correlation between PQ variables is required to determine the power loss on the distribution line of buildings. Using data of PQ variables recorded by Fluke Power Analyzer 435 series II, the energy losses of the distribution line without/with PQ improvement for each building is calculated. Analysis results have shown that the reduction potential is proportional to the value of PQ variables. Administrative faculty building with poor power quality has the potential to reduce its energy losses on the distribution line by 52.62% through power quality improvement. Civil engineering building group with quite good power quality only has the potential to reduce energy losses by 32.81%. Overall, the buildings in this faculty have the potential to reduce energy losses on distribution lines by 34.42% through its power quality improvement.
Volume: 17
Issue: 2
Page: 868-876
Publish at: 2020-02-01

Mobile robot controller using novel hybrid system

10.11591/ijece.v10i1.pp1027-1034
Ayman A Abu Baker , Yazeed Ghadi
Hybrid neuro-fuzzy controller is one of the techniques that is used as a tool to control a mobile robot in unstructured environment. In this paper a novel neuro-fuzzy technique is proposed in order to tackle the problem of mobile robot autonomous navigation in unstructured environment. Obstacle avoidance is an important task in the field of robotics, since the goal of autonomous robot is to reach the destination without collision. The objective is to make the robot move along a collision free trajectory until it reaches its target. The proposed approach uses the artificial neural network instead of the fuzzified engine then the output from it is processed using adaptive inference engine and defuzzification engine. In this approach, the real processing time is reduce that is increase the mobile robot response. The proposed neuro-fuzzy controller is evaluated subjectively and objectively with other approaches and also the processing time is taken in consideration.
Volume: 10
Issue: 1
Page: 1027-1034
Publish at: 2020-02-01

Vascular dementia classification based on hilbert huang transform as feature extractor

10.11591/ijeecs.v17.i2.pp968-974
Wan Siti Nur Shafiqa Wan Musa , Mohd Ibrahim Shapiai , Hilman Fauzi , Aznida Firzah Abdul Aziz
Impairment of cognitive and working memory after stroke was common. Vascular dementia (VaD) was a prevalent type of dementia that was caused by an impaired blood supply to the brain because of a series of small strokes. Electroencephalogram (EEG) gives information about brain status and activity, so it had a lot of potential to be used in diagnosing people with dementia. Since the EEG signal is extremely non-linear and non-stationary data, traditional Fourier analysis such as Fast Fourier Transform (FFT) that broadens sinusoidal signals cannot describe the amplitude contribution of each frequency value in specific time. Meanwhile, Hilbert Huang Transform (HHT) was based on the characteristic local time scale of the signal, it can efficiently obtain instantaneous frequency and instantaneous amplitude for nonstationary and nonlinear data. In this paper, HHT was employed as feature extraction method to extract the energy features of frequency bands from post stroke patients and healthy subjects. The extracted features were fed into extreme learning machine (ELM) for classifying post stroke patient with VaD and healthy subjects. The results of classification accuracy using HHT as feature extractor and FFT as feature extractor were compared. The mean accuracy of classification using HHT was 59.14%, respectively, while mean accuracy of classification using FFT was 94.4%, respectively, in classifying post stroke patient with VaD and healthy subjects.
Volume: 17
Issue: 2
Page: 968-974
Publish at: 2020-02-01
Show 1296 of 2098

Discover Our Library

Embark on a journey through our expansive collection of articles and let curiosity lead your path to innovation.

Explore Now
Library 3D Ilustration