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29,939 Article Results

Classification of Atrial Arrhythmias using Neural Networks

10.11591/ijai.v7.i2.pp90-94
Jai Utkarsh , Raju Kumar Pandey , Shrey Kumar Dubey , Shubham Sinha , S. S. Sahu
Electrocardiogram (ECG) is an important tool used by clinicians for successful diagnosis and detection of Arrhythmias, like Atrial Fibrillation (AF) and Atrial Flutter (AFL). In this manuscript, an efficient technique of classifying atrial arrhythmias from Normal Sinus Rhythm (NSR) has been presented. Autoregressive Modelling has been used to capture the features of the ECG signal, which are then fed as inputs to the neural network for classification. The standard database available at Physionet Bank repository has been used for training, validation and testing of the model. Exhaustive experimental study has been carried out by extracting ECG samples of duration of 5 seconds, 10 seconds and 20 seconds. It provides an accuracy of 99% and 94.3% on training and test set respectively for 5 sec recordings. In 10 sec and 20 sec samples it shows 100% accuracy. Thus, the proposed method can be used to detect the arrhythmias in a small duration recordings with a fairly high accuracy.
Volume: 7
Issue: 2
Page: 90-94
Publish at: 2018-06-01

Implementation of Augmented Reality as Information and Promotion Media on Dieng Tourism Area

10.12928/telkomnika.v16i4.7759
Banu Nur; Semarang State University Affan , Agus; Semarang State University Suryanto , Arief; Semarang State University Arfriandi
Information and promotion became necessary for tourists to get also improve their knowledge of tourism and their experiences about the tourist destination. Dieng tourist area had manytourist attractions and would be styled to be promoted at the world level tourism by Central Java government in Indonesia, but tourist information and promotional media not yet structured and interactive, as well as the need of media that can provide knowledge, experience for tourists with packaged in an interactive and interesting way. The purpose of this research is to produce Augmented Reality application that could visualize information of Dieng tourism objects, as an interactive, interesting information and tourism promotional media. The user would get information about every tourist attraction in Dieng through the augmented reality application that contains many contents about the sites by scanned Natural Marker that already exist in every Dieng tourist attraction sites with his smartphone.
Volume: 16
Issue: 4
Page: 1818-1825
Publish at: 2018-06-01

Performance Evaluation of DV-HOP and Amorphous Algorithms based on Localization Schemes in Wireless Sensor Networks

10.12928/telkomnika.v16i3.8560
Doan; Telkom University Perdana , Adi; Telkom University Nugroho , Favian; Telkom University Dewanta
In the field of high-risk observation, the nodes in Wireless Sensor Network (WSN) are distributed randomly. The result from sensing becomes meaningless if it is not known from where the originating node is. Therefore, a sensor node positioning scheme, known as the localization scheme, is required. The localization scheme consists of distance estimation and position computing. Thus, this research used connectivity as distance estimation within range free algorithm DV-Hop and Amorphous, and then trilateral algorithm for computing the position. Besides that, distance estimation using the connectivity between nodes is not needed for the additional hardware ranging as required by a range-based localization scheme. In this research compared the localization algorithm based on range free localization, which are DV-Hop algorithm and Amorphous algorithm. The simulation result shows that the amorphous algorithm have achieved 13.60% and 24.538% lower than dv-hop algorithm for each parameter error localization and energy consumption. On node density variations, dv-hop algorithm gained a localization error that is 26.95% lower than amorphous algorithm, but for energy consumption parameter, amorphous gained 14.227% lower than dv-hop algorithm. In the communication range variation scenario, dv-hop algorithm gained a localization error that is50.282% lower than amorphous. However, for energy consumption parameter, amorphous algorithm gained 12.35%. lower than dv-hop algorithm.
Volume: 16
Issue: 3
Page: 1150-1157
Publish at: 2018-06-01

Optimization of PV Systems Using Data Mining and Regression Learner MPPT Techniques

10.11591/ijeecs.v10.i3.pp1080-1089
Adedayo M. Farayola , Ali N Hasan , Ahmed Ali
Supervised machine learning techniques such as artificial neural network (ANN) and ANFIS are powerful tools used to track the maximum power point (MPPT) in photovoltaic systems. However, these offline MPPT techniques still require large and accurate training data sets for successful tracking. This paper presents an innovative use of rational quadratic gaussian process regression (RQGPR) technique to generate the large and very accurate training data required for MPPT task. To confirm the effectiveness of the RQGPR technique, the combination of ANN and RQGPR as ANN-RQGPR technique results were compared with the conventional ANN technique results, and that of combined ANN and linear support vector machine regression as ANN-LSVM technique results under different weather conditions. Results show that ANN-RQGPR technique produced the overall best result and with an improved performance. 
Volume: 10
Issue: 3
Page: 1080-1089
Publish at: 2018-06-01

Efficient Data Security for Mobile Instant Messenger

10.12928/telkomnika.v16i3.4045
Putra; Harbin University of Science and Technology Wanda , Huang; Harbin University of Science and Technology J. Jie
Instant Messenger (IM) becomes one of the most popular applications in mobile technology and communication. A lot of users around the world installed it for daily activities. Current IM found security lacks both in authentication and encryption matters. Various IM growing today still not apply an efficient method in authentication and encryption process, conventional security methods and client-server architecture system have to risk too many users for attacking server such as compromising, cracking password or PINs by Unauthorized people. Common IM services lack native encryption to protect information being transmitted over the public network and still used high computation in the mobile environment, this problem needs efficient security methods. Then, in public IM also found various messages with fake users, it occurs because public IM carry out the separate system in authentication and encryption process, strong authentication need to solve this issue in messenger environment. The tremendous growth of mobile IM user needs efficient and secure communication way. This paper proposes a new efficient method for securing message both in encryption and authentication within the end-to-end model. In this research, security method proposes new algorithms based on Elliptic Curve (EC) works in Peer to Peer (P2P) architecture than a conventional client-server model. The result shows this method produces efficient time in authentication and encryption process while applying in a mobile environment. Besides, it is compatible with the mobile phone which has a limitation of computation capabilities and resources.
Volume: 16
Issue: 3
Page: 1426-1434
Publish at: 2018-06-01

Shared-hidden-layer Deep Neural Network for Under-resourced Language the Content

10.12928/telkomnika.v16i3.7984
Devin; Institut Teknologi Bandung Hoesen , Dessi Puji; Institut Teknologi Bandung Lestari , Dwi Hendratmo; Institut Teknologi Bandung Widyantoro
Training speech recognizer with under-resourced language data still proves difficult. Indonesian language is considered under-resourced because the lack of a standard speech corpus, text corpus, and dictionary. In this research, the efficacy of augmenting limited Indonesian speech training data with highly-resourced-language training data, such as English, to train Indonesian speech recognizer was analyzed. The training was performed in form of shared-hidden-layer deep-neural-network (SHL-DNN) training. An SHL-DNN has language-independent hidden layers and can be pre-trained and trained using multilingual training data without any difference with a monolingual deep neural network. The SHL-DNN using Indonesian and English speech training data proved effective for decreasing word error rate (WER) in decoding Indonesian dictated-speech by achieving 3.82% absolute decrease compared to a monolingual Indonesian hidden Markov model using Gaussian mixture model emission (GMM-HMM). The case was confirmed when the SHL-DNN was also employed to decode Indonesian spontaneous-speech by achieving 4.19% absolute WER decrease.
Volume: 16
Issue: 3
Page: 1226-1238
Publish at: 2018-06-01

Design of Dual Band Stacked RDRA for 5G Applications

10.12928/telkomnika.v16i3.9037
A. I.; Universiti Teknologi Malaysia (UTM) Bugaje , M. H.; Universiti Teknologi Malaysia (UTM) Jamaluddin , R.; Universiti Teknologi Malaysia (UTM) Selvaraju , M. N.; Universiti Teknologi Malaysia (UTM) Hafiz , AdulKadir Bello; University of Science and Technology Allero Shallah
This paper focuses on the investigation and discussion of three different designs of stacked Rectangular Dielectric Resonator Antenna (RDRA) at dual bands of 25 GHz and 32 GHz for 5G applications. First, basic stacked RDRA. Second, basic stacked RDRA with a single notch. Third, basic stacked RDRA with double notches. All the proposed structure consists of two stacked DRA of dielectric permittivity of 10 which mounted on a Duriod dielectric substrate of dielectric permittivity of 2.2 and feed by Microstrip aperture slot feeding technique (MSA) for 50 Ω characteristic impedance. Authentication of all the proposed designs comparison is completed using 3D simulation tool by observing the performance of reflection coefficient, bandwidth, and gain. All the proposed RDRA are demonstrated simulated reflection coefficient lower than 20 dB for both bands and simulated gain more than 6 dBi. Meanwhile, for simulated bandwidth, only the proposed basic stacked RDRA with single and double notches are demonstrated simulated bandwidth more than 1 GHz, which fulfill the requirement for 5G applications.
Volume: 16
Issue: 3
Page: 1120-1125
Publish at: 2018-06-01

Planning of Energy Saving with Cogeneration System

10.12928/telkomnika.v16i3.5651
Imam Abdul; Universitas Muria Kudus Rozaq , NYD; Universitas Muria Kudus Setyaningsih , Budi; Universitas Muria Kudus Gunawan
PT Dua Kelinci is one of the largest food industries in Pati Regency one of whose products is egg peanut which needs huge electric and heat energy so that energy saving needs to be done. One of the efforts of energy saving is by conducting cogeneration (merging between electric and heat). This research started from a data collection, i.e. finding out the need of electricity and heat in the process of egg-peanut manufacture by a cogeneration technology at PT Dua Kelinci. The research method includes technical analysis and economic analysis. From the technical analysis, it is found that the electric energy saving by using cogeneration 103.680 kW and the heat energy saving is 4,075 TJ/year. From the economic analysis it is seen that before using cogeneration the cost that should be expended is USD 75.209,61 while after using cogeneration the cost is USD 60.6014,04 therefore from the economic aspect there is energy saving as much as USD 15.19,57/year.
Volume: 16
Issue: 3
Page: 989-996
Publish at: 2018-06-01

Rain Rate Distributions for Microwave Link Design Based on Long Term Measurement in Malaysia

10.11591/ijeecs.v10.i3.pp1023-1029
Islam Md Rafiqul , Md Moktarul Alam , Ali Kodhim Lwas , Sarah Yasmin Mohamad
Attenuation due to rain is an important constraint in microwave radio link design especially at frequencies above 10 GHz. It restricts the path length of radio communication systems and limits the use of higher frequencies for line-of-sight microwave links and satellite communications. In order to predict the attenuation due to rain accurately rainfall intensity is required with 1-minute integration time. Rainfall is a meteorological phenomenon with complex structure due to its variability in space, duration and occurrence frequency, particularly in tropical and equatorial regions. Since, the statistical distribution of rain attenuation is obtained from the rain rate distribution for the region considered, it should be noted that the accuracy of the rain rate measurement affects the accuracy of the attenuation estimation. This paper presents rain intensity with 1-minute integration time measured for 6 years in Malaysia, it’s distribution, comparison with other prediction models and impact on high frequency microwave links.
Volume: 10
Issue: 3
Page: 1023-1029
Publish at: 2018-06-01

Structural Health Monitoring Sensor based on A Flexible Microstrip Patch Antenna

10.11591/ijeecs.v10.i3.pp917-924
Hamse Abdillahi Haji Omer , Saidatul Norlyana Azemi , Azremi Abdullah Al-Hadi , Ping Jack Soh , Mohd Faizal Jamlos
A microstrip patch antenna strain sensor operating at dual frequencies 1.8GHz and 2.4GHz have been designed based on the relation between the resonant frequency and the strain applied to it. Felt substrate with a height of 3mm and dielectric constant of 1.44 and shield conductor are used for the design of this antenna. Testing results show that the resonant frequency of the microstrip patch antenna is 1.78 GHz and 2.4 GHz, which agrees with the simulation. The resonant frequency of the microstrip patch antenna increases linearly with the increase of the applied strain. This microstrip patch antenna strain sensor can be integrated with other components easily and have a great potential applications in structural health monitoring systems.
Volume: 10
Issue: 3
Page: 917-924
Publish at: 2018-06-01

Design of an Interdigital Structure Planar Bandpass Filter for UWB Frequency

10.11591/ijece.v8i3.pp1654-1658
S. M. A. Motakabber , M. N. Haidari
A new topology of miniaturized interdigital structuremicrostrip planar bandpass filter for Ultra-Wideband (UWB) frequency has been discussed in this paper. The proposed design and its simulation have been carried out by using an electromagnetic simulation software named CST microwave studio. The Taconic TLX-8 microwave substrate has been used in this research. The experimental result and analysis have been performed by using the microwave vector network analyzer. The experimental result showed that the -10dB bandwidth of the filter is 7.5GHz. The lower and upper corner frequencies of the filter have been achieved at 3.1GHz and 10.6GHz respectively. At the center frequency of 6.85GHz, the -1dB insertion loss and the -7dB return losshave been observed. The simulated and experimental results are well agreed with a compact size filter of 19×21×0.5mm3.
Volume: 8
Issue: 3
Page: 1654-1658
Publish at: 2018-06-01

Perfecting A Video Game with Game Metrics

10.12928/telkomnika.v16i3.7209
Junaidi; STMIK Raharja Junaidi , Andy; Bina Nusantara university Julianto , Nizirwan; Esa Unggul university Anwar , Safrizal; Bina Nusantara University Safrizal , Harco Leslie Hendric; Bina Nusantara University Spits Warnars , Kiyota; Prince Songkla university, Thailand Hashimoto
A state of a perfect video game is what developers has been seeking for their product developments, to achieve the selected state, several standards and methods needs to be applied. These standards and methods are special: they are both verifiable and quantifiable, to make their action and end goal a clear one, the terms for this standards and methods are called ‘game metrics’ and we decided that this is a must-have tool or method to be implanted in a development of a game because it will boost your standards rapidly and will be able to tell you about your own progress of the development.
Volume: 16
Issue: 3
Page: 1324-1331
Publish at: 2018-06-01

Speech Input as an Alternative Mode to Perform Multi-touch Gestures

10.12928/telkomnika.v16i3.8417
Nor Hidayah; Universiti Kebangsaan Malaysia Hussain , Tengku Siti Meriam; Universiti Kebangsaan Malaysia Tengku Wook , Siti Fadzilah; Universiti Kebangsaan Malaysia Mat Noor , Hazura; Universiti Kebangsaan Malaysia Mohamed
Speech is fundamental and the most dominant form of communication. Speech input may facilitate natural interaction between humans and computers. For children, this input mode supports their interaction with application systems. This study addresses speech input as an alternative mode in order to improve multi-touch gesture interactions. Previous studies show that children difficult to perform multi-touch gestures successfully. In fact, multi-touch is parts of basic core gestures that have been adapted to most of the learning applications. This study uses the Wizard-of-Oz method and posts interview, involving nine preschool children between ages of four to six years old. Results of the study show children’s interactional ability using speech input towards systems and positive feedback received from them regarding the prototype of the systems. The findings from this study highlight the opportunities and challenges in using speech input to increase the success of children’s interaction with multi-touch gestures.
Volume: 16
Issue: 3
Page: 1367-1375
Publish at: 2018-06-01

Lowpass Filter with Hilbert Curve Ring and Sierpinski Carpet DGS

10.12928/telkomnika.v16i3.7722
Dian Widi; Universitas Mercu Buana Astuti , Intan; Universitas Mercu Buana Wahyuni , Muslim; Universitas Mercu Buana Muslim , Mudrik; Universitas Mercu Buana Alaydrus
Good performance and compact size are the paramaters which are vital when desiging a filter. One of the creteria of good performance is selectivity. This research, conducted by Hilbert Curve Ring and Siepinski Carpet, is used as defected ground structure to overcome filter selectivity. By using three cascadeds Hilbert Curve Ring defected ground structure cells and three steps Sierpinski carpet, a lowpass filter is designed and fabricated. The measurement result for lowpass filterwith Hilbert Curve Ring defected ground structure has sharper selectivity with the cut off frequency at 2.173 GHz and the insertion loss value is 2.135 dB. While the measurement result for three steps Sierpinski carpet has the cut off frequency at 1.728 GHz and the insertion loss value is 0.682 dB.
Volume: 16
Issue: 3
Page: 1092-1100
Publish at: 2018-06-01

Integrative Model for Quantitative Evaluation of Selection Telecommunication Tower Site

10.12928/telkomnika.v16i3.8922
Janah A.; Girne American University Asassfeh , Mokhled; Mutah University AlTarawneh , Fadiya; Girne American University Samson
This paper analyzes the weight of impact factors on selection the antenna places for mobile telecommunication system in Jordan. The new technique plays a lead role in divided area and selects the place of antennas' sites. The main objective of this research is to minimize the antenna numbers in order to reduce the cost. Research follows flowcharting categories and stages as: The first stage aim to classify the effective factors on the: signal radius, better position of antenna from candidate points, reserved area, and non-preferring position. The second stage focuses on finding the effective weight of these factors on the decision. The third stage suggest the new proposed approach by implement the MCLP and P-center problems in linear function. The last stage has the pseudo code for the proposed approach, where the proposed approach provides the solution that helps the planners in telecommunication industry and in related government agencies make informed position of the antennas.
Volume: 16
Issue: 3
Page: 1158-1164
Publish at: 2018-06-01
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