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29,734 Article Results

A Review in E-Government Service Quality Measurement

10.11591/ijeecs.v10.i3.pp1257-1265
Wael Jabbar Abed Al-Nidawi , Saba Kamil Jaafar Al-Wassiti , Mahdi Athab Maan , Marini Othman
Governments are responsible for providing services to the public easily, efficiently, therefore they introduced electronic government as a way to minimize costs, enhance services, save time and augment performance and efficacy in the public sector. E-service Quality is one of the critical issues in the failure or success of e-government projects. It promotes the efficiency and effectiveness of governments and the relationships with users and enhances their satisfactions. Measurement of e-service quality is a complex process because it depends on citizens’ perception that is difficult to be realized and measured. This paper aims to review scales measurement of e- government services quality that providing an evaluating scale based on defining the significant e- service quality dimensions. These dimensions cover important e-services requirements to enhance e-service quality.
Volume: 10
Issue: 3
Page: 1257-1265
Publish at: 2018-06-01

Performance Improvement for Hybrid L-band Remote Erbium Doped Fiber Amplifier/Raman using Phase Modulator

10.11591/ijece.v8i3.pp1875-1881
Nelidya Md. Yusoff , A. H. Sulaiman , Sumiaty Ambran , Azura Hamzah , M. A. Mahdi
We have demonstrated the performance improvement of L-band hybrid remote Erbium-doped fiber amplifier by introducing a phase modulator to suppress the stimulated Brilloiun scattering (SBS) effect in the transmission. The transmission gain has improved by 12.65dB while the noise figure has reduced by 47.1dB when 0dBm signal power is generated at 1590.05nm wavelength. Furthermore, the optical signal-to-noise ratio has improved from 7.81dB to 29.72dB when the signal power is varied from -30dBm to 0dBm. By implementing a phase modulator to the input signal somehow able to produce better performance regarding gain, noise figure and optical signal-to-noise ratio, especially at the higher signal power as the gain, has been transferred to the Stokes signal and the amplified signal.
Volume: 8
Issue: 3
Page: 1875-1881
Publish at: 2018-06-01

Real-time Video Quality Assessment for Analog Television Based on Adaptive Fuzzy Membership Function Tuning

10.12928/telkomnika.v16i3.7161
Herti; Bhayangkara University Miawarni , M. Mahaputra; Bhayangkara University Hidayat , Surya; Institut Teknologi Sepuluh November Sumpeno , Eko; Institut Teknologi Sepuluh November Setijadi
Real-time VQA (Video Quality Assessment) is an important part in the effort to build tracking antenna system especially for analog TV. In this case, VQA must work in real-time to assess the video clarity level. VQA assessment results are valuable information for the decision-making process. Thus, the antenna can rotate automatically looking for the ideal direction without user’s control. In addition, the video clarity level on the TV screen can reach optimum according to the user's wishes. The biggest challenge to VQA is, VQA must be able to assess the video clarity level according to the user’s visual perception. Therefore, in this study, the MOS-VQS (Mean Opinion Score-Video Quality Subjective) was used as a visual perception approach. In addition, Adaptive FIS (Fuzzy Inference System) with membership function tuning was implemented for decision making. This was conducted as an effort to build a reliable real-time VQA. The test results show that real-time VQA that has been built has a good performance. This is shown from the average accuracy percentage of the lowest assessment reached 77.2% and the highest reached 88.2%.
Volume: 16
Issue: 3
Page: 1071-1082
Publish at: 2018-06-01

Qualitative Evaluation of RFID Implementation on Warehouse Management System

10.12928/telkomnika.v16i3.8400
Syafrial Fachri; Politeknik Pos Indonesia Pane , Rolly Maulana; Politeknik Pos Indonesia Awangga , Bayu Rahmad; Politeknik Pos Indonesia Azhari
Logistic sector actors need innovation to improve competitiveness in providing their best services to consumers, one of them on Warehouse Management System (WMS) because the system is used to control the movement of the supply chain. There is a problem in one of Indonesia logistics companies on the process of selecting goods, so the warehouseman still difficulties in this process. Thus, RFID implementation on WMS becomes one of the solutions to handle the goods selection process. This research uses Design Science Research Methodology (DSRM) which focuses on developing and improving the model performance of a system and using waterfall model for system development. Then the authors will analyze the test results with the validity test and reliability test of the questionnaire, and the results of the data analysis will determine the feasibility of this research to be applied.
Volume: 16
Issue: 3
Page: 1303-1308
Publish at: 2018-06-01

An FPGA-based Network Firewall with Expandable Rule Description

10.11591/ijeecs.v10.i3.pp1310-1318
Raya kahtan Mohammed , Yoichiro UENO
With the rapid growth of communications via the Internet, the need for an effective firewall system which has not badly affect the overall network performances has been increased. In this paper, a Field Programmable Gate Array (FPGA) -based firewall system with high performance has been implemented using Network FPGA (NetFPGA) with Xilinx Kintex-7 XC7K325T FPGA. Based on NetFPGA reference router project, a NetFPGA-based firewall system was implemented. The hardware module performs rule matching operation using content addressable memory (CAM) for higher speed data processing. To evaluate system performance, throughput, latency, and memory utilization were measured for different cases using different tools, also the number of rules that an incoming packet is subjected to was varied to get more readings using both software and hardware features. The results showed that the designed firewall system provides better performance than traditional firewalls. System throughput was doubled times of the one with Linux-Iptables firewalls.
Volume: 10
Issue: 3
Page: 1310-1318
Publish at: 2018-06-01

Weighted Round Robin Load Balancer to Enhance Web Server Cluster in OpenFlow Networks

10.12928/telkomnika.v16i3.5601
Yuggo; Bogor Agricultural University Afrianto , Heru; Bogor Agricultural University Sukoco , Sri; Bogor Agricultural University Wahjuni
Web server clusters require a reliable network management for increasing the quality of service (QoS). A load balancer system installed in a software-defined network (SDN) is one method that can improve the performance and availability of web server services. SDN is a dynamic and a programmable network management approach, and one protocol that supports it is OpenFlow. This research aims to design and analyse a model of a load balancer on OpenFlow networks, implementing a Weighted Round Robin (WRR) algorithm. The analysis process is conducted by measuring the value of a QoS web server performance parameters, such as response time, throughput, HTTP success, and loss connection. The results showed the WRR algorithm can be implemented for balancing a network system with dynamic resource allocation. The weight workload of each service can be obtained from the needs and existing network resources. The performance of a load balancer on an OpenFlow network is 57% better than in a traditional one for testing of response time conducted in a high connection. However, the throughput and HTTP success connection decreased by 2% and 10%, respectively, while HTTP loss connection increased by 49%.
Volume: 16
Issue: 3
Page: 1402-1408
Publish at: 2018-06-01

Long-Range Monitoring System with PDMS Material

10.11591/ijeecs.v10.i3.pp974-979
Norsaidah Muhamad Nadzir , M. K. A. Rahim , F. Zubir , H. A. Majid
This paper describes the development of a long range monitoring system that integrates Cottonwood: UHF Long Distance RFID reader module with Raspberry Pi 3. When a UHF RFID tag is within the UHF RFID reader antenna’s range, the unique ID of the tag will be transferred to the Raspberry Pi 3 to be processed. Then, the data will be sent over to the database wirelessly to be managed, stored, and displayed. The paper also describes the measurement done to determine the most suitable thickness of PDMS material so that it could be incorporated as a wearable transponder. After the result is calculated and tabulated, it can be concluded that the most suitable thickness of PDMS material for the transponder is 8 mm.
Volume: 10
Issue: 3
Page: 974-979
Publish at: 2018-06-01

Energy Consumption Saving in Embedded Microprocessors Using Hardware Accelerators

10.12928/telkomnika.v16i3.9387
Gian Carlo; University of Rome Tor Vergata Cardarilli , Luca Di; University of Rome Tor Vergata Nunzio , Rocco; University of Rome Tor Vergata Fazzolari , Marco; University of Rome Tor Vergata Re , Francesca; University of Rome Tor Vergata Silvestri , Sergio; University of Rome Tor Vergata Spanò
This paper deals with the reduction of power consumption in embedded microprocessors. Computing power and energy efficiency are becoming the main challenges for embedded system applications. This is, in particular, the caseof wearable systems. When the power supply is provided by batteries, an important requirement for these systems is the long service life. This work investigates a method for the reduction of microprocessor energy consumption, based on the use of hardware accelerators. Their use allows to reduce the execution time and to decrease the clock frequency, so reducing the power consumption. In order to provide experimental results, authors analyze a case of study in the field of wearable devices for the processing of ECG signals. The experimental results show that the use of hardware accelerator significantly reduces the power consumption.
Volume: 16
Issue: 3
Page: 1019-1026
Publish at: 2018-06-01

Development of a Wireless Power Transfer Circuit Based on Inductive Coupling

10.12928/telkomnika.v16i3.7686
Supriyadi; Politeknik Negeri Bandung Supriyadi , Edi; Politeknik Negeri Bandung Rakhman , Suyanto; Politeknik Negeri Bandung Suyanto , Arif; Politeknik Negeri Bandung Rahman , Noor Cholis; Politeknik Negeri Bandung Basjaruddin
Wireless electrical energy transfer has many advantages over the same through conducting cables. This research focusses on developing wireless power transfer circuitusing inductive coupling. The experiment has been done by changing the number of turns and the diameter of the wire of a coil with the aim of finding the maximum power and the longest distancethat the energy can be transferred through wireless means. The power source is connected to a series of electronics components and a copper coil which form the primary source for the transmitter the power receiver consists of a copper coil, a rectifier and the load. In a system with the diameter of the wires of the two coils is0.5 mm, and the number of turns is 26 at the frequency of 470KHz the efficiency of power transfer about 1.51% at a distance of 1 cm. The transferred energy by wireless means could operate a 1 Watt LED at 1 cm.
Volume: 16
Issue: 3
Page: 1013-1018
Publish at: 2018-06-01

Optimal Reactive Power Dispatch using Crow Search Algorithm

10.11591/ijece.v8i3.pp1423-1431
Lakshmi M , Ramesh Kumar A
The optimal reactive power dispatch is a kind of optimization problem that plays a very important role in the operation and control of the power system. This work presents a meta-heuristic based approach to solve the optimal reactive power dispatch problem. The proposed approach employs Crow Search algorithm to find the values for optimal setting of optimal reactive power dispatch control variables. The proposed way of approach is scrutinized and further being tested on the standard IEEE 30-bus, 57-bus and 118-bus test system with different objectives which includes the minimization of real power losses, total voltage deviation and also the enhancement of voltage stability. The simulation results procured thus indicates the supremacy of the proposed approach over the other approaches cited in the literature.
Volume: 8
Issue: 3
Page: 1423-1431
Publish at: 2018-06-01

K Means Clustering and Meanshift Analysis for Grouping the Data of Coal Term in Puslitbang tekMIRA

10.12928/telkomnika.v16i3.8910
Rolly Maulana; Politeknik Pos Indonesia Awangga , Syafrial Fachri; Politeknik Pos Indonesia Pane , Khaera; Politeknik Pos Indonesia Tunnisa , Iping Supriana; Institut Teknologi Bandung Suwardi
Indonesian government agencies under the Ministry of Energy and Mineral Resources have problems in classifying data dictionary of coal. This research conduct grouping coal dictionary using K-Means and MeanShift algorithm. K-means algorithm is used to get cluster value on character and word criteria. The last iteration of Euclidian distance calculation data on k-means combine with Meanshift algorithm. The meanshift calculates centroid by selecting different bandwidths. The result of grouping using k-means and meanshift algorithm shows different centroid to find optimum bandwidth value. The data dictionary of this research has sorted in alphabetically.
Volume: 16
Issue: 3
Page: 1351-1357
Publish at: 2018-06-01

Analysis the Effect of Control Factors Optimization on the Threshold Voltage of 18 nm PMOS Using L27 Taguchi Method

10.11591/ijeecs.v10.i3.pp934-942
Norani Atan , Burhanuddin Yeop Majlis , Ibrahin Ahmad , K. H. Chong
This research paper is about the investigation of Halo Implantation, Halo Implantation Energy, Halo Tilt, Compensation Implantation and Source/Drain Implantation. They are types of control factors that used in achievement of the threshold voltage value. To support the successfully of the threshold voltage (VTH) producing, Taguchi method by using L27 orthogonal array was used to optimize the control factors variation. This analysis has involved with 2 main factors which are break down into five control factors and two noise factors. The five control factors were varied with three levels of each and the two noise factors were varied with two levels of each in 27 experiments. In Taguchi method, the statistics data of 18 nm PMOS transistor are from the signal noise ratio (SNR) with nominal-the best (NTB) and the analysis of variance (ANOVA) are executed to minimize the variance of threshold voltage. This experiment implanted by using Virtual Wafer Fabrication SILVACO software which is to design and fabricate the transistor device. Experimental results revealed that the optimization method is achieved to perform the threshold voltage value with least variance and the percent, which is only 2.16%. The threshold voltage value from the experiment shows -0.308517 volts while the target value that is -0.302 volts from value of International Technology Roadmap of semiconductor, ITRS 2012. The threshold voltage value for 18 nm PMOS transistor is well within the range of -0.302 ± 12.7% volts that is recommendation by the International Roadmap for Semiconductor prediction 2012.
Volume: 10
Issue: 3
Page: 934-942
Publish at: 2018-06-01

Wavelet Based Feature Extraction for The Indonesian CV Syllables Sound

10.12928/telkomnika.v16i3.5014
Domy; Universitas Gadjah Mada Kristomo , Risanuri; Universitas Gadjah Mada Hidayat , Indah; Universitas Gadjah Mada Soesanti
This paper proposes the combined methods of Wavelet Transform (WT) and Euclidean Distance (ED) to estimate the expected value of the possibly feature vector of Indonesian syllables. This research aims to find the best properties in effectiveness and efficiency on performing feature extraction of each syllable sound to be applied in the speech recognition systems. This proposed approach which is the state-of-the-art of the previous study consist of three main phase. In the first phase, the speech signal is segmented and normalized. In the second phase, the signal is transformed into frequency domain by using the WT. In the third phase, to estimate the expected feature vector, the ED algorithm is used. Th e result shows the list of features of each syllables can be used for the next research, and some recommendations on the most effective and efficient WT to be used in performing syllable sound recognition.
Volume: 16
Issue: 3
Page: 925-933
Publish at: 2018-06-01

Latin-to-Balinese Script Transliteration Method on Mobile Application: A Comparison

10.11591/ijeecs.v10.i3.pp1331-1342
Gede Indrawan , I Ketut Paramarta , Ketut Agustini , Sariyasa Sariyasa
Balinese script writing, as one of Balinese cultural richness, is going to extinct because of its decreasing use. This research is a way to preserve it through collaboration between Computer Science and Language discipline, that focused on accuracy comparison of Latin-to-Balinese script transliteration method on mobile application as a ubiquitous learning media. From few research in this area, there are only two existing methods to be compared, i.e. each on Android mobile application that were called Belajar Aksara Bali (BAB), and Transliterasi Aksara Bali (TAB). The comparison was based on The Balinese Alphabet writing rules and examples document by Sudewa. Through the experiment, TAB has outperformed BAB since TAB has passed over 68% (103 of 151) cases, while BAB has passed over only 39% (59 of 151) cases. This research contributes on a comprehensive accuracy comparison analysis of Latin-to-Balinese script transliteration method, specifically on mobile application, since there is no such study. This research also contributes on those methods improvement possibility. In the future, this research can be used as a reference for improvement of any Latin-to-Balinese script transliteration method by taking care on thirteen kind of special words that were found during this comparison study.
Volume: 10
Issue: 3
Page: 1331-1342
Publish at: 2018-06-01

Lessons Learned from the Quality of Experience (QoE) Assessment of 4G Mobile Technology in Indonesia

10.11591/ijeecs.v10.i3.pp1203-1211
Muhammad Suryanegara , Fery Andriyanto , Ajib Setyo Arifin
The purpose of this research is to assess the quality of experience (QoE) of 4G mobile technology that is used in the Indonesian market. The study analyzed the results obtained and discussed the lesson learned for stakeholders of the telecommunications industry. Primary data was obtained by conducting a market survey in May 2017, with a confidence level of 95%, representing the 4G subscribers in the Indonesia market. There are three main subjective aspects of QoE: service quality, data speed, and network quality (indicated by stability of signal). The analyses were conducted based on ACR-HR score, comparing users’ experiences of 4G with their previous 3G subscriptions. It was found that, in general, the Indonesian market perceived 4G as offering a better experience than 3G. However, one of the important lessons that can be learned is that network operators should provide a more stable signal, as the market gave a lower score for this aspect.
Volume: 10
Issue: 3
Page: 1203-1211
Publish at: 2018-06-01
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