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29,922 Article Results

Evaluation of Research Standards at Ministry of Research, Technology and Higher Education with I-MR Map Control Analysis

10.12928/telkomnika.v16i4.10491
Muhammad; University of Indonesia Dimyati , Akhmad; Islamic University of Indonesia Fauzy
In order to accommodate research activities at all universities in Indonesia, the Directorate Genereal of Strengthening for Research and Development, Ministry of Research, Technology, and Higher Education (Kemenristekdikti) of the Republic of Indonesia established research quality standard. The standard includes the minimum targets that must be achieved by each University at the period of conducting the research activity. However, until now there has been no measurement to find out whether the existing standard was good enough or needs to be evaluated. Therefore, this study was conducted to measure the standards. The method used was the analysis of I-MR (Individual and Moving Range) control chart to see the performance of the standard. The results show that existing research schemes have encouraged the improvement of international publications, but have not yet maximized the production of other outputs such as textbooks, accredited national publications, intellectual property rights, and ptototypes. The result of the research was expected to be used as material for evaluation and improvement of policy to improve the quality of research standard in Kemenristekdikti.
Volume: 16
Issue: 4
Page: 1449-1456
Publish at: 2018-08-01

A Blind Multiple Watermarks based on Human Visual Characteristics

10.11591/ijece.v8i4.pp2578-2587
Ferda Ernawan , Siau-Chuin Liew , Zuriani Mustaffa , Kohbalan Moorthy
Digital watermarking is an alternative solution to prevent unauthorized duplication, distribution and breach of ownership right. This paper proposes a watermarking scheme for multiple watermarks embedding. The embedding of multiple watermarks use a block-based scheme based on human visual characteristics. A threshold is used to determine the watermark values by modifying first column of the orthogonal U matrix obtained from Singular Value Decomposition (SVD). The tradeoff between normalize cross-correlation and imperceptibility of watermarked image from quantization steps was used to achieve an optimal threshold value. The results show that our proposed multiple watermarks scheme exhibit robustness against signal processing attacks. The proposed scheme demonstrates that the watermark recovery from chrominance blue was resistant against different types of attacks.
Volume: 8
Issue: 4
Page: 2578-2587
Publish at: 2018-08-01

Designing Fuzzy Expert System to Identify Child Intelligence

10.12928/telkomnika.v16i4.7779
Muhamad Bahrul; Esa Unggul University Ulum , Vitri; YARSI University Tundjungsari
Every child is special and has her/his own unique potential. Identifying child’s potential in early age is important for teaching purpose since every child has difference intelligence and interest. Therefore children’s teaching and learning process should be delivered based on child’s interest and intelligence, instead of forcing children to excel in every subject. We propose our research to identify child’s intelligence by designing fuzzy expert system. The system works based on several input data of children’s multiple intelligences. The fuzzy expert system is developed using 25 input variables and resulted in 9 output variables. The system classifies the result based on 9 types of intelligence in human, where each exhibits different level. We produce 81 rules with fuzzy set of three different levels value (high, moderate, or low) for every kind of intelligence. The result of this research is very useful to help parents and teachers for determining their method of teaching based on children’s potential.
Volume: 16
Issue: 4
Page: 1688-1696
Publish at: 2018-08-01

Training of Convolutional Neural Network using Transfer Learning for Aedes Aegypti Larvae

10.12928/telkomnika.v16i4.8744
Mohamad Aqil; Universiti Teknikal Malaysia Melaka Mohd Fuad , Mohd Ruddin; Universiti Teknikal Malaysia Melaka Ab Ghani , Rozaimi; Universiti Teknikal Malaysia Melaka Ghazali , Tarmizi Ahmad; Universiti Teknikal Malaysia Melaka Izzuddin , Mohamad Fani; Universiti Teknikal Malaysia Melaka Sulaima , Zanariah; Universiti Teknikal Malaysia Melaka Jano , Tole; Universitas Ahmad Dahlan Sutikno
The flavivirus epidemiology has reached an alarming rate which haunts the world population including Malaysia. World Health Organization has proposed and practised various methods of vector control through environmental management, chemical and biological orientations. However, from the listed control vectors, the most crucial part to be heeded are non-accessible places like water storage and artificial container. The objective of the study was to acquire and compare various accuracies and cross-entropy errors of the training sets within different learning rates in water storage tank environment which was essential for detection. This experiment performed transfer learning where Inception-V3 was implemented. About 534 images were trained to classify between Aedes Aegypti larvae and float valve within 3 different learning rates. For training accuracy and validation accuracy, learning rates were 0.1; 99.98%, 99.90% and 0.01; 99.91%, 99.77% and 0.001; 99.10%, 99.93%. Cross-entropy errors for training and validation for 0.1 were 0.0021, 0.0184 whereas for 0.01 were 0.0091, 0.0121 and 0.001; 0.0513, 0.0330. Various accuracies and cross-entropy errors of the training sets within the different learning rates were successfully acquired and compared.
Volume: 16
Issue: 4
Page: 1894-1900
Publish at: 2018-08-01

Microwave Bandpass Filter Integrated with Notch Response for Wide-band Applications

10.11591/ijeecs.v11.i2.pp797-804
Mussa Mabrok , Zahriladha Zakaria , Nurhana Abu Hussin , Mohamad Ariffin Mutalib
This paper presents the design of wide-band bandpass filter using microstrip structure at 3-6GHz with fractional bandwidth of 66.67% based upon short-circuited stubs structure of 5th degree. In order to avoid the interference from existing system that operates in the frequency band, the folded stepped impedance resonator (SIR) was introduced to generate a narrow notch band at 5.2GHz. Pin diode is employ as switching mechanism for the notch response. This design is simulated by Advance Design System (ADS) software and using Roger Duroid 4350B with a dielectric constant of 3.48, substrate thickness 0.508mm and loss tangent 0.0019.The achieved return loss is better than 15dB and insertion loss is less than 1dB.The designed filter can be used in microwave communication systems such as wireless communication devices and military applications (radar system).
Volume: 11
Issue: 2
Page: 797-804
Publish at: 2018-08-01

Improve Interval Optimization of FLR using Auto-speed Acceleration Algorithm

10.12928/telkomnika.v16i4.6668
Yusuf Priyo; Brawijaya University Anggodo , Imam; Brawijaya University Cholissodin
Inflation is a benchmark of a country's economic development. Inflation is very influential on various things, so forecasting inflation to know on upcoming inflation will impact positively. There are various methods used to perform forecasting, one of which is the fuzzy time series forecasting with maximum results. Fuzzy logical relationships (FLR) model is a very good in doing forecasting. However, there are some parameters that the value needs to be optimised. Interval is a parameter which is highly influence toward forecasting result. The utilizing optimization with hybrid automatic clustering and particle swarm optimization (ACPSO). Automatic clustering can do interval formation with just the right amount. While the PSO can optimise the value of each interval and it is providing maximum results. This study proposes the improvement in find the solution using auto-speed acceleration algorithm. Auto-speed acceleration algorithm can find a global solution which is hard to reach by the PSO and time of computation is faster. The results of the acquired solutions can provide the right interval so that the value of the FLR can perform forecasting with maximum results.
Volume: 16
Issue: 4
Page: 1724-1734
Publish at: 2018-08-01

Verification of MATLAB/Simulink Power Cable Modelling with Experimental Analysis

10.11591/ijeecs.v11.i2.pp622-629
Tze Mei Kuan , Suhaila Sulaiman , Azrul Mohd. Ariffin , Wan Mohamad Shakir Wan Shamsuddin
Cross-linked polyethylene (XLPE) power cable is commonly used as the medium for transmitting power supply in the power system network. However, frequent exposure of XLPE cable to the high voltage causes its insulation to degrade over time leading to electricity outages. Degradation of cable can be prevented if regular maintenance is performed using the accurate assessment method. This study models and simulates a cable system comprising of three cable sections connected by two un-degraded cable joints. This model aims to assess defect along the tested cable with the application of time domain reflectometry (TDR) technique. A series of simulations are conducted by varying the cable insulation condition to study its influence on the cable joint reflection. These simulation results from MATLAB/Simulink are validated against the actual TDR experimental results. The identical results shown between the simulation and experimental results indicate that the cable model is valid and can be used to assess the condition of a cable.
Volume: 11
Issue: 2
Page: 622-629
Publish at: 2018-08-01

Brain Tumor Detection Using Wathershed Segmentation Techniques and Area Calculation

10.11591/ijict.v7i2.pp71-76
Meenakshi Pareek , CK Jha , Saurabh Mukherjee , Chandani Joshi
This paper primarily focuses on to employ a novel approach to classify the brain tumor and its area. The Tumor is an uncontrolled enlargement of tissues in any portion of the human body. Tumors are of several types and have some different characteristics. According to their characteristics some of them are avoidable and some are unavoidable. Brain tumor is serious and life threatening issues now days, because of today’s hectic lifestyle. Medical imaging play important role to diagnose brain tumor .In this study an automated system has been proposed to detect and calculate the area of tumor. For proposed system the experiment carried out with 150 T1 weighted MRI images. The edge based segmentation, watershed segmentation has applied for tumor, and watershed segmentation has used to extract abnormal cells from the normal cells to get the tumor identification of involved and noninvolved areas so that the radiologist differentiate the affected area. The experiment result shows tumor extraction and area of tumor find the weather it is benign and malignant.
Volume: 7
Issue: 2
Page: 71-76
Publish at: 2018-08-01

Intelligent Agent Simulator in Massive Crowd

10.11591/ijeecs.v11.i2.pp577-584
Mohamad, S , Nasir, F.M , Sunar, M.S. , Isa, K. , Hanifa, R.M. , Shah, S.M. , Ribuan, M.N. , Ahmad, A.
Crowd simulations have many benefits over real-life research such as in computer games, architecture and entertainment. One of the key elements in this study is to include elements of decision-making into the crowd. The aim of this simulator is to simulate the features of an intelligent agent to escape from crowded environments especially in one-way corridor, two-way corridor and four-way intersection. The addition of the graphical user interface enables intuitive and fast handling in all settings and features of the Intelligent Agent Simulator and allows convenient research in the field of intelligent behaviour in massive crowd. This paper describes the development of a simulator by using the Open Graphics Library (OpenGL), starting from the production of training data, the simulation process, until the simulation results. The Social Force Model (SFM) is used to generate the motion of agents and the Support Vector Machine (SVM) is used to predict the next step for intelligent agent.
Volume: 11
Issue: 2
Page: 577-584
Publish at: 2018-08-01

Comparison of Chemical Compounds of Essential Oils from Natural Agarwood and Inoculated Agarwood (Roselle-Based Inoculation)

10.11591/ijeecs.v11.i2.pp677-681
N.R.M. Nasardin , M.A.M. Hanafiah , M. Zainon , M. Ibrahim , A.I.A. Rahman , Z.A. Baharudin , M.H.M. Husin , I. Mahir , A.A. Zulkefle
In this paper, the physical and structural properties of the natural agarwood and inoculated agarwood using Roselle-based inoculation had been discussed. The results showed that a high volume of oil obtained on day 1 by the inoculated agarwood which yielded 3ml of the agarwood oil as compared to the natural agarwood that had yielded only 2.3ml. In the chemical analysis, five major compounds were detected by FTIR which were C-O bond (aromatic alkane), C-C stretching (aromatic alkane), C-O stretching (ether) and C-H bond (aromatic ring) in both oils. Moreover, the inoculated agarwood exhibited better oil production compared to the natural agarwood.
Volume: 11
Issue: 2
Page: 677-681
Publish at: 2018-08-01

Performance Investigation of Channel Noise Effect in Data Transmission Medium Using Signal to Noise Ratio (SNR)

10.11591/ijeecs.v11.i2.pp419-423
Gebremedhn wubet wagaye
The noise introduced in the channel obviously affects the bit error rate of the communication system and this has direct impact in the security. Here the main problem is that the receiver terminal decoding techniques can lead to wrong interpretation even if the Bit Error Rate (BER) is acceptable. So the main idea here is to introduce high values of Signal to Noise Ratio (SNR) that can improve the bit error rate which exists due to the noise introduced in the wireless channel.
Volume: 11
Issue: 2
Page: 419-423
Publish at: 2018-08-01

Disruptive Technology: The Future of SMS Technology

10.11591/ijeecs.v11.i2.pp665-671
Cik Ku Haroswati Binti Che Ku Yahaya , Murizah Kassim , Hasnorhafiza Husni
The research illustrates a view on the current trends in the telecommunication industry focusing on the matter of Short Message Service (SMS) technology. It targets and explains disruptive technology and also introduces disruptive technology in Short Message Service (SMS). The methodology of this research is market trend analysis using data on volume of Short Message Service (SMS) sent and received through a mobile network and a survey that was conducted with questionnaires. The findings are Short Message Service (SMS) is predicted to become obsolete and be disrupted by Over the Top (OTT) messaging application by the third quarter of the year 2020. This was implemented with linear regression prediction. By the survey a new trend of using Short Message Service (SMS) has emerged but users have certainly moved away from SMS and now prefer texting Over the Top (OTT) messaging applications.
Volume: 11
Issue: 2
Page: 665-671
Publish at: 2018-08-01

Opinion Mining of Light Rail Transit Development in Indonesia

10.11591/ijeecs.v11.i2.pp791-796
Sarifah Putri Raflesia , Dinda Lestarini , Firdaus Firdaus , Desty Rodiah
Light rail transit (LRT), or fast tram is urban public transport using rolling stock similar to a tramway, but operating at a higher capacity, and often on an exclusive right-of-way. Indonesia as one of developing countries has been developed the LRT in two cities of Indonesia, Palembang and Jakarta. There are opinions toward the development of LRT, negative and positive opinions. To reveal the level of LRT development acceptance, this research uses machine learning approach to analyze the data which is gathered through social media. By conducting this paper, the data is modeled and classified in order to analyze the social sentiment towards the LRT development.
Volume: 11
Issue: 2
Page: 791-796
Publish at: 2018-08-01

Novel UWB Microstrip Antenna Structures with Defected Ground Structure

10.11591/ijeecs.v11.i2.pp429-436
Saida Elajoumi , A. Tajmouati , J. Zbitou , A. Errkik , L. El Abdellaoui , A.M. Sanchez
This paper presents the design of new compact printed antennas for Ultra Wide Band applications, fed with a microstrip-line. The proposed designs consist of a patch antenna with defected ground, which are fed by 50Ω microstrip transmission line. The frequency range is 3.1-10.6 GHz which is the Federal Communication Commission (FCC) band of UWB. The proposed antennas are easy for integration with microwave circuits. They are validated into simulation by using two electromagnetic solvers CST-MW and Ansoft HFSS. The simulated input impedance bandwidth ranging 3GHz to more than 14 GHz is obtained with return loss less -10dB, and exhibits good UWB characteristics. The measured parameters are good agreement with the simulation. Therefore these antennas offer excellent performance for UWB system.
Volume: 11
Issue: 2
Page: 429-436
Publish at: 2018-08-01

Evaluation Review on Effectiveness and Security Performances of Text Steganography Technique

10.11591/ijeecs.v11.i2.pp747-754
Roshidi Din , Sunariya Utama , Aida Mustapha
Steganography is one of the categories in information hiding that is implemented to conceal the hidden message to ensure it cannot be recognized by human vision. This paper focuses on steganography implementation in text domain namely text steganography. Text steganography consists of two groups, which are word-rule based and feature-based techniques. This paper analysed these two categories of text steganography based on effectiveness and security evaluation because the effectiveness is critically important in order to determine that technique has the appropriate quality. Meanwhile, the security is important due to the intensity performance in securing the hidden message. The main goal of this paper is to review the evaluation of text steganography in terms of effectiveness and security that have been developed by previous research efforts. It is anticipated that this paper will identify the performance of text steganography based on effectiveness and security measurement.
Volume: 11
Issue: 2
Page: 747-754
Publish at: 2018-08-01
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