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

31,377 Article Results

Automatic face and VLP’s recognition for smart parking system

10.12928/telkomnika.v17i4.11746
Reivind P.; Telkom University Persada , Suci; Telkom University Aulia , Burhanuddin; Telkom University D. , Sugondo; Telkom University H.
One of the concerning issues regarding smart city is Smart Parking. In Smart Parking, some researchers try to provide solutions and breakthroughs on several research topics among security systems, the availability of single space, an IoT framework, etc. In this study, we proposed a security system on Smart Parking based on face recognition and VLP’s (Vehicle License Plates) identification. In this research, SSIM (Structural Similarity) method as part of IQA has been applied due to its reliability and simple computation for face detection and recognition process. From the test results of 30 data, obtained the highest SSIM value 0.83 with the highest accuracy rate of 76.67%. That level of accuracy still has not reached the implementation standard of 99.9%. So that it still needs to be improved in the future studies, especially in the filtering noise section.
Volume: 17
Issue: 4
Page: 1698-1705
Publish at: 2019-08-01

Performance evaluation of listwise deletion for impaired datasets in multiple regression-based prediction

10.11591/ijeecs.v15.i2.pp1009-1018
Chanintorn Jittawiriyanukoon
Multiple Regression-Based Prediction (MRBP) is an emerging calculation to or analysis technique cope with the future by compiling the history of data. The MRBP characteristic will include an approximation for the associations between physical observations and predictions. MRBP is a predictive model, which will be an important source of knowledge in terms of an interesting trend to be followed in the future. However, there is impairment in the MRBP dataset, wherein each form of missing and noisy data has caused an error and is unavailable further analysis. To overcome this unavailability, so that the data analytics can be moved on, two treatment approaches are introduced. First, the given dataset is denoised; next, listwise deletion (LD) is proposed to handle the missing data. The performance of the proposed technique will be investigated by dealing with datasets that cannot be executed. Employing the Massive Online Analysis (MOA) software, the proposed model is investigated, and the results are summarized. Performance metrics, such as mean squared error (MSE), correlation coefficient (COEF), mean absolute error (MAE), root mean squared error (RMSE), and the average error percentage, are used to validate the proposed mechanism. The proposed LD projection is confirmed through actual values. The proposed LD outperforms other treatments as it only requires less state space, which reflects low computation cost, and proves its capability to overcome the limitation of analysis.
Volume: 15
Issue: 2
Page: 1009-1018
Publish at: 2019-08-01

Gain enhancement of dielectric resonator antenna for millimeter wave applications

10.12928/telkomnika.v17i4.12770
Irfan; Universiti Teknologi Malaysia Ali , Mohd Haizal; Universiti Teknologi Malaysia Jamaluddin , M. R.; Cranfield University Kamarudin , Abinash; Universiti Teknologi Malaysia Gaya , M. H.; Universiti Teknologi Malaysia Dahri
In this paper, dielectric resonator antenna (DRA) with enhanced gain operating on the higher order mode (𝑇𝐸𝛿15𝑥 ) is presented. The dielectric resonator antenna with dielectric constant 𝜀𝑟 of 10 and loss tangent of 0.002 is used. The DRA is fed by microstrip line through an aperture slot. The proposed antenna is designed at 26 GHz and achieved a gain of 7.9 dBi with corresponding simulated radiation efficiency of 93%. The impedance bandwidth of 1.5 GHz from 25.1 GHz to 26.6 GHz has been achieved. The reflection coefficient, antenna gain, radiation patterns, and efficiency of the antenna are studied. Simulations are performed using CST microwave studio, and their results are presented.
Volume: 17
Issue: 4
Page: 1670-1673
Publish at: 2019-08-01

Design and simulate a doherty power amplifier using GaAs technology for telecommunication applications

10.11591/ijeecs.v15.i2.pp845-854
Ehsan Barmala
In this paper, a Doherty power amplifier was designed and simulated at 2.4 GHz central frequency which has high efficiency. A Doherty power amplifier is a way to increase the efficiency in the power amplifiers. OMMIC ED02AH technology and PHEMT transistors, which is made of gallium arsenide, have been used in this simulation. The Doherty power amplifier unique feature is its simple structure which is consisting of two parallel power amplifiers and transmission lines. In order to integrate the circuit, the Doherty power transmission amplifier lines were implemented using an inductor and capacitive components. Also, the Wilkinson power divider is used on the chip input. To improve the efficiency, the auxiliary amplifier dimensions is selected enlarge and the further input power is allocated it by the power divider. A parallel R-C circuit has been used at the input of transistors to improve their stability. Simulation results show that the Doherty power amplifier has 17.2 dB output power gain, 23 dBm maximum output power, and its output power P1dB =22.6dBm at compression point -1 dB, also, its maximum efficiency is 55.5%.
Volume: 15
Issue: 2
Page: 845-854
Publish at: 2019-08-01

Solving one-dimensional unconstrained global optimization problem using parameter free filled function method

10.12928/telkomnika.v17i4.10885
Ismail Bin; Laboratory of Statistical Computational and Operation Research, Institute of Mathematical Research, UPM Mohd , Yosza; Univerisiti Teknikal Malaysia Melaka (UTeM) Dasril , Ridwan; Institut Teknologi Telkom Purwokerto Pandiya , Herlina; Universitas Padjadjaran Napitupulu
It is generally known that almost all filled function methods for one-dimensional unconstrained global optimization problems have computational weaknesses. This paper introduces a relatively new parameter free filled function, which creates a non-ascending bridge from any local isolated minimizer to other first local isolated minimizer with lower or equal function value. The algorithm’s unprecedented function can be used to determine all extreme and inflection points between the two considered consecutive local isolated minimizers. The proposed method never fails to carry out its job. The results of the several testing examples have shown the capability and efficiency of this algorithm while at the same time, proving that the computational weaknesses of the filled function methods can be overcomed.
Volume: 17
Issue: 4
Page: 2125-2138
Publish at: 2019-08-01

Dominated destinations of tourist inside Iraq using personal information and frequency of travel

10.12928/telkomnika.v17i4.11956
Rula; Institute of informatics for Postgraduate studies Amjed , Muayad Sadik; University of Technology Croock
Tourism today is one of the most important economic and social sectors in the world, which plays a prominent role in the development of countries. This importance has grown as an industry through the social media networks.In this paper, a proposed method has been introduced distinguish the main factors that impact the Frequency of Travel (FoT) among Iraq local tourists. Application (API) graphics and scrapy are utilized to collect information from TripAdvisor social network in a period of (2015-2018). The collected information are reprocessed and coded for the specified nominal data using tied rank. It is important to note that the adopted technique does not lose any data about the attribute and brings different properties beforehand obscure. Data mining ordinal logistic regression is used to extract user's behavior upon local tourism in Iraq. The expected outcome of this work is to discover out the effect of personal information and the type of places on the selection of the local touristic places in Iraq. The collected information was exploited to know the preferred local touristic trends, because there are no statistics on the number of domestic tourists in Iraq. The proposed model was used for analyzing personal information and types of preferred tourism places as a factors affecting frequency of travel in Iraq. The obtained results show the prediction of preferred touristic places by tourists in Iraq.
Volume: 17
Issue: 4
Page: 1723-1730
Publish at: 2019-08-01

An energy efficient void avoidance opportunistic routing protocol for underwater sensor

10.12928/telkomnika.v17i4.12779
Azlina; Universiti Teknologi Malaysia Kamaruddin , Md Asri; Universiti Teknologi Malaysia Ngadi , Hafizah; Universiti Teknologi Malaysia Harun
Underwater sensor network is an emerging technology due to its numerous applications in aqueous environments. However, limitations of these networks include limited bandwidth, high propagation delays and power constraints. Hence, new routing protocols must be designed specifically for USN. Opportunistic routing offers a promising method to overcome these limitations. The proposed protocol is a novel energy-efficient void avoidance opportunistic routing algorithm. The protocol deals with the issue of void holes during transmission while reducing energy consumption and keeping the packet delivery ratio at a satisfactory level. To evaluate the performance, two common metrics have been used for routing protocols in USNs; energy consumption and packet delivery ratio. Simulations were carried out in ns2 with Aqua-Sim. The performance of the proposed routing protocol is compared to VAPR. The performance evaluation of EEVA-OR indicate its benefit as compared to VAPR in terms of void detection, energy consumption and packet delivery ratio.
Volume: 17
Issue: 4
Page: 1948-1956
Publish at: 2019-08-01

Performance Evaluation of Fine-tuned Faster R-CNN on specific MS COCO Objects

10.11591/ijece.v9i4.pp2548-2555
Garima Devnani , Ayush Jaiswal , Roshni John , Rajat Chaurasia , Neha Tirpude
Fine-tuning of a model is a method that is most often required to cater to the users’ explicit requirements. But the question remains whether the model is accurate enough to be used for a certain application. This paper strives to present the metrics used for performance evaluation of a Convolutional Neural Network (CNN) model. The evaluation is based on the training process which provides us with intermediate models after every 1000 iterations. While 1000 iterations are not substantial enough over the range of 490k iterations, the groups are sized with 100k iterations each. Now, the intention was to compare the recorded metrics to evaluate the model in terms of accuracy. The training model used the set of specific categories chosen from the Microsoft Common Objects in Context (MS COCO) dataset while allowing the users to use their externally available images to test the model’s accuracy. Our trained model ensured that all the objects are detected that are present in the image to depict the effect of precision.
Volume: 9
Issue: 4
Page: 2548-2555
Publish at: 2019-08-01

Analyzing the deformation of copper conductor from a fire impact

10.12928/telkomnika.v17i4.10116
Didik; Pakuan University Notosudjono , Tatang Kukuh; ISTN Jakarta Wibawa , Bagus Dwi; Brawijaya University Ramadhon
Fire is an oxidation reaction of the three elements (fuel, oxygen, heat) that can result in loss of property, injury, even death. Electricity potential that may results on fire is the short circuit current that occurs on the equipments and electrical installation cables. The remaining wires at the first fire location are subject to fire damage and can cause electrical short circuit. The purpose of this study is to analyze the short-circuit electrical deformation of copper cable using SEM EDS and MICRO XRF instrument. Based on the study result, there is a dominant change of oxygen elements in single cable and fiber sample causing fire that is 35,96% and 21,24%, those values are higher than Oxygen on a burned short circuited cable that is 19,54% and 12,1%. The microstructure of the cable that causes fire looks like irregular clumps whereas the burned cable looks like a clump of clumps.
Volume: 17
Issue: 4
Page: 2008-2016
Publish at: 2019-08-01

Novel design of triple-bands EBG

10.12928/telkomnika.v17i4.12616
M. K.; Universiti Teknikal Malaysia Melaka (UTeM) Abdulhameed , M. S. Mohamad; Universiti Teknikal Malaysia Melaka (UTeM) Isa , Z.; Universiti Teknikal Malaysia Melaka (UTeM) Zakaria , I. M.; Universiti Teknikal Malaysia Melaka (UTeM) Ibrahim , Mowafak K.; University of Kerbala Mohsen , Ahmed M.; Universiti Teknikal Malaysia Melaka (UTeM) Dinar , Mothana L.; Universiti Teknikal Malaysia Melaka (UTeM) Attiah
This paper presents a novel design for a triple band electromagnetic band gap (EBG) structures that provides three band gaps, with operating frequency of below 10 GHz, while the ordinary mushroom like EBG structure gives only one band gap. Complexity reduction (reduce the number of unit cells and Vias) was achieved by replacing each four cells of the Mushroom like EBG by the one of double slotted type EBG (DSTEBG) or triple side slotted EBG (TSSEBG). The Mushroom like EBG was further modified by increasing its size and inserting the slots to gain more capacitance and inductance which resulted into triple band stop.The new designs wer compared with bandwidths expressed by other EBGs and -20 dB cut-off frequencies. The size of EBG element and the gap between EBG elements, and slot width were investigated to analyse their effect on the transmission response. The structures were designed from 2.54 mm Rogers RT/Duroid 6010 substrate with relative permittivity of 10.2 and loss tangent of 0.0023. Among the investigated EBGs, the single band mushroom like EBG and the triple band of the TSSEBG demonstrated better bandwidth and lower resonance frequency performance, whereas the DSTEBG showed larger bandwidth for the first and third band. The proposed EBGs could be useful in the antenna design and other microwave circuits.
Volume: 17
Issue: 4
Page: 1683-1691
Publish at: 2019-08-01

Portable health monitoring kit using photolethysmogram signal

10.11591/ijeecs.v15.i2.pp638-649
N. F. A. Jamal , K. A. Sidek
This study investigates the feasibility of photoplethysmogram (PPG) signals in monitoring health condition and designing a portable health monitoring kit which is suitable for home use. The aim of this study is to ease people in monitoring their health continuously without the need to go to the hospital which can save a lot of time. The focus of this study is to find heart rate and blood pressure recording. The type of PPG sensor used in this project is a non-invasive PPG which measures the blood volume changes in any part of the body. A total of 16 subjects consisting of male and female with age range of 20 to 60 years old were involved in this research. The heart rate and blood pressure for each subject were acquired and analyzed. Based on the result, it shows that higher heart rate reading is associated with female and younger age groups. Meanwhile, for blood pressure value, male subjects tend to have higher blood pressure as compared to female subjects. However, there is no specific pattern for blood pressure in terms of the age group. In the case of HRV analysis based on Kubios software, the SDNN value is higher for male and older age subjects. Meanwhile, the RMSSD value is lower for male and older age subjects. Therefore, PPG signal has the capability to monitor the health status of an individual, which acts as an alternative biological signal for the existing health monitoring systems.
Volume: 15
Issue: 2
Page: 638-649
Publish at: 2019-08-01

Real interpolation method for transfer function approximation of distributed parameter system

10.12928/telkomnika.v17i4.11088
Phu Tran; Industrial University of Ho Chi Minh City Tin , Minh; Ton Duc Thang University Tran , Le Anh; Ton Duc Thang University Vu , Nguyen Quang; Ton Duc Thang University Dung , Tran Thanh; Van Hien University Trang
Distributed parameter system (DPS) presents one of the most complex systems in the control theory. The transfer function of a DPS possibly contents: rational, nonlinear and irrational components. This thing leads that studies of the transfer function of a DPS are difficult in the time domain and frequency domain. In this paper, a systematic approach is proposed for linearizing DPS. This approach is based on the real interpolation method (RIM) to approximate the transfer function of DPS by rational-order transfer function. The results of the numerical examples show that the method is simple, computationally efficient, and flexible.
Volume: 17
Issue: 4
Page: 1941-1947
Publish at: 2019-08-01

Dual element MIMO planar inverted-F antenna for 5G millimeter wave application

10.12928/telkomnika.v17i4.12762
H. M. R.; Universiti Kuala Lumpur British Malaysian Institute Nurul , Z.; Universiti Kuala Lumpur British Malaysian Institute Mansor , M. K. A.; Universiti Teknologi Malaysia Rahim
This work presents a 28 GHz Dual Element Multiple Input Multiple Output (MIMO) Planar Inverted-F Antenna for millimeter wave 5G mobile terminal. The antenna design employs PIFA design concept as it is a common antenna type use for mobile phone as it provides wide bandwidth and good performance. The antenna design begins with a characterization of the single element PIFA design and then extended to Dual Element MIMO PIFA design. The single element PIFA design is enhanced to MIMO design by extending the ground plane and locate the second PIFA at the other end. Isolation between the antenna elements of the MIMO PIFA is analyzed by varying the gap distance between the antenna elements. The result for Envelope Correlation Coefficient, Diversity Gain and Multiplexing Efficiency is also presented. The simulation computed using Computer Simulation Technology (CST) Microwave Studio software.
Volume: 17
Issue: 4
Page: 1648-1655
Publish at: 2019-08-01

Development of advanced automated test equipment for digital system by using FPGA

10.11591/ijeecs.v15.i2.pp661-670
Adharul Muttaqin , Zainul Abidin , Raden Arief Setyawan , Itsna Az Zahra
One of the fundamental devices in electronics, Integrated Circuit (IC), is usually applied in more complex devices. Before the IC is used, it has to pass some tests to guarantee that its function is in accordance with the specifications. Automated Test Equipment (ATE) is used to test many electronics devices, including ICs. Nowadays, with the rapid advance in electronics technology, the industry will need more advanced ATE to fulfill customers demand. One of the applicative solutions is improvement and integration of a standalone module in commercial ATE owned by the company. ASL 1000 Test System is one of the ATE that is still widely used in industry. ASL 1000 has one limitation in one of its module, Digital Driver and Detector (DDD). The limitation is how much vector pattern that can be saved in the memory. Based on the observation in DDD instrument, a standalone module that has similar specifications as DDD can be designed using Field Programmable Gate Array (FPGA) as its base component. In the standalone module plan, supporting circuits are used, these are interface circuit between FPGA and PC using RS-232 and ASIC as ATE drivers or comparators to connect FPGA and device under test (DUT). The result of the study shows that the designed module can receive and send 8-bit data at 19.200 baud rate. It can write and read 16-bit data from and to SDR SDRAM within 90 ns and 80 ns for one cycle. It can control DAC type AD5308 in standalone operation and DAC type AD5676 in daisy chain operation to generate specific voltage in specific channel. In behavioral simulation, main controller module has already worked in accordance with the desired specifications.
Volume: 15
Issue: 2
Page: 661-670
Publish at: 2019-08-01

Multi-function intelligent robotic in metals detection applications

10.12928/telkomnika.v17i4.11822
Nabeel Salih; University of Kufa Ali , Hakim Adil; University of Kufa Kadhim , Dheyaa Mohammed; University of Kufa Abdulsahib
Recent technologies for robotics have been offered an effective and efficient solution to safeguard workers from risks in their work environments. These risks involve radioactive, toxic, explosive and mines. In this paper, design and implement computer robot based on metal detection as well as avoiding obstacles automatically. The proposed wireless controlled robotic vehicle can be used in metal detection applications such as landmine detection, obstacles avoidance, selecting best routing without imposing human's harms and workforce aspects. The robotic wheel can sense the obstacles that positioning at ahead of its path, and also avoids the obstacles forward, left and right of its routes. The robot is controlled by using Bluetooth wireless communication to interface between the controller and the implemented robot. Furthermore, sensor IR (FC-03) for the metal detector and used ultrasonic sensor (HC-SR04) for objects or obstacles sensing. The presented controlled robotic designed for desert and dry soil that can replace the human role in avoiding obstacles and metal detection capabilities. The produced robot was useful due to it can detect metals and avoiding obstacles consecutively besides it was effective to select the best route based on the intelligent technique that adopted, the predefined metals by using an intelligent decision maker for route finder in a flat surface environment.
Volume: 17
Issue: 4
Page: 2058-2069
Publish at: 2019-08-01
Show 1371 of 2092

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