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30,096 Article Results

Fusion of Random Projection, Multi-Resolution Features and Distance Weighted K Nearest Neighbor for Masses Detection in Mammographic Images

10.11591/ijeecs.v10.i3.pp1030-1035
Viet Dung Nguyen , Minh Dong Le
Breast cancer is the top cancer in women both in the developed and the developing world. For early detection of the disease, mammography is still the most effective method beside ultrasound and magnetic resonance imaging. Computer Aided Detection systems have been developed to aid radiologists in diagnosing breast cancer. Different methods were proposed to overcome the main drawback of producing large number of False Positives.  In this paper, we presented a novel method for masses detection in mammograms. To describe masses, multi-resolution features were utilized. In feature extraction step, we calculated multi-resolution Block Difference Inverse Probability features and multi-resolution statistical features. Once the descriptors were extracted, we deployed random projection and distance weighted K Nearest Neighbor to classify the detected masses. The result is quite sanguine with sensitivity, false positive reduction and time for carrying out the algorithm
Volume: 10
Issue: 3
Page: 1030-1035
Publish at: 2018-06-01

Artificial Neural Network Model for Affective Environmental Control System in Food SMEs

10.12928/telkomnika.v16i3.7437
Mirwan; Universitas Gadjah Mada Ushada , Tsuyoshi; Ibaraki University Okayama , Atris; Universitas Gadjah Mada Suyantohadi
This paper presents an affective environmental control system for Small and Medium-sized Enterprises (SMEs). The system is proposed as a technology innovation in appropriate information technology. It is defined that workplace environment set points could be controlled using worker workload. The research objectives are: 1) To design an affective environmental control model for SME; 2) To develop an Artificial Neural Network (ANN) model for predicting affective environment set points. The system consisted of 4 sub-systems as measurement, assessment, control and decision. An ANN model is developed for sub-systems of control. Training and validation data are acquired from 4 (four) samples of SME in Yogyakarta Special Region, Indonesia. The model has been developed successfully to predict temperature and light intensity set points using back-propagation supervised learning method. The research results indicated the satisfied performance of ANN with minimum error. ANN model indicated the closeness of R2 value between training and validation data. The research results could be applied to support the worker productivity in food SMEs by providing a comfort workplace environment and optimum worker workload.
Volume: 16
Issue: 3
Page: 1317-1323
Publish at: 2018-06-01

Development of Accurate BSIM4 Noise Parameters for CMOS 0.13-µm Transistors in Below 3-GHz LNA Application

10.11591/ijeecs.v10.i3.pp925-933
Asmaa Nur Aqilah Zainal Badri , Norlaili Mohd Noh , Shukri bin Korakkottil Kunhi Mohd , Asrulnizam Abd Manaf , Arjuna Marzuki , Mohd Tafir Mustaffa , Mohamed Fauzi Packeer Mohamed
Accurate transistor thermal noise model is crucial in IC design as it allows accurate selection of transistors for specific frequency application. The accuracy of the model is represented by the similarity between the simulated and the measured noise parameters (NPs). This work was based on a problem faced by a foundry concerning the dissimilarities between the measured and simulated NPs, especially minimum noise figure (NFmin) for frequencies below 3 GHz.
Volume: 10
Issue: 3
Page: 925-933
Publish at: 2018-06-01

Development of Automatic Mixing Process for Fertigation System in Rock Melon Cultivation

10.11591/ijece.v8i3.pp1913-1919
Muhammad Khairie Idham Abd Rahman , Salinda Buyamin , M. S. Zainal Abidin , Musa Mohd Mokji
This work proposed an automatic mixing system of nutrient solution for rock melon fertigation according to the required electrical conductivity (EC) level. Compared to the manual practice, this automatic system will ensure continuous supply of mixed nutrient solution without the need to daily check and mix new nutrient. Thus, this easy to use and low cost automatic system will reduce the burden of the farmers. This system uses an EC sensor to automatically check the concentration level of the mixed nutrient solution. Other than that, the system only consists of electronic pumps for mixing process and an Arduino board as the controller. The controller will monitor the EC level and run the mixing process when the EC level is below the required level. By calibrating the EC sensors, the test shows that the automatic mixing system is able to accurately keep the mixed nutrient solution concentration in a 400 L mixing reservoir at several required levels.
Volume: 8
Issue: 3
Page: 1913-1919
Publish at: 2018-06-01

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

Transceiver Design for MIMO Systems with Individual Transmit Power Constraints

10.11591/ijece.v8i3.pp1583-1595
Raja Muthalagu
This paper investigate the transceiver design for single-user multiple-input multipleoutput system (SU-MIMO). Joint transceiver design with an improper modulation is developed based on the minimum total mean-squared error (TMSE) criterion under two different cases. One is equal power allocation (EPA) and other is the power constraint that jointly meets both EPA and total transmit power constraint (TTPC) (i.e ITPC). Transceiver is designed based on the assumption that both the perfect and imperfect channel state information (CSI) is available at both the transmitter and receiver. The simulation results show the performance improvement of the proposed work over conventional work in terms of bit error rate (BER).
Volume: 8
Issue: 3
Page: 1583-1595
Publish at: 2018-06-01

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

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

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

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
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