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Black hole attack behavioral analysis general network scalability

10.11591/ijeecs.v13.i2.pp677-682
Layth A. Khalil Al Dulaimi , R. Badlishah Ahmad , Naimah Yaakob , Mohd Hafiz Yusoff , Mohamed Elshaikh
A mobile ad hoc network (MANET) is a frameworkless system of different mobile devices known for its self-arranging conduct. MANETs can convey over moderately data transfer capacity compelled routing connections. In a blackhole assault, a malicious node falsely advertises the shortest path to the destination node, intending to disrupt communication. Our objective was to review the impact of a blackhole assault on networks. To accomplish this, we simulated MANET situations, which include the blackhole node, using the OMNET++ simulator to demonstrate the effects of a single blackhole attack and multiple blackhole attacks on MANET performance have examined for networks. We analysed MANET performance under blackhole assaults through the use of performance grids. A mobile ad hoc network (MANET) is a frameworkless system of different mobile devices known for its self-arranging conduct. MANETs can convey over moderately data transfer capacity compelled routing connections. In a blackhole assault, a malicious node falsely advertises the shortest path to the destination node, intending to disrupt communication. Our objective was to review the impact of a blackhole assault on networks. To accomplish this, we simulated MANET situations, which include the blackhole node, using the OMNET++ simulator to demonstrate the effects of a single blackhole attack and multiple blackhole attacks on MANET performance have examined for networks. We analysed MANET performance under blackhole assaults through the use of performance grids..
Volume: 13
Issue: 2
Page: 677-682
Publish at: 2019-02-01

New instances classification framework on Quran ontology applied to question answering system

10.12928/telkomnika.v17i1.9794
Fandy Setyo; STMIK AMIKOM Purwokerto Utomo , Nanna; Universiti Teknikal Malaysia Melaka Suryana , Mohd Sanusi; Universiti Teknikal Malaysia Melaka Azmi
Instances classification with the small dataset for Quran ontology is the current research problem which appears in Quran ontology development. The existing classification approach used machine learning: Backpropagation Neural Network. However, this method has a drawback; if the training set amount is small, then the classifier accuracy could decline. Unfortunately, Holy Quran has a small corpus. Based on this problem, our study aims to formulate new instances classification framework for small training corpus applied to semantic question answering system. As a result, the instances classification framework consists of several essential components: pre-processing, morphology analysis, semantic analysis, feature extraction, instances classification with Radial Basis Function Networks algorithm, and the transformation module. This algorithm is chosen since it robustness to noisy data and has an excellent achievement to handle small dataset. Furthermore, document processing module on question answering system is used to access instances classification result in Quran ontology.
Volume: 17
Issue: 1
Page: 139-146
Publish at: 2019-02-01

WSN performance based on node placement by genetic algorithm at smart home environment

10.12928/telkomnika.v17i1.11621
Mochammad Hannats Hanafi; University of Brawijaya Ichsan , Wijaya; University of Brawijaya Kurniawan , Gembong Edhi; University of Brawijaya Setyawan , Irma Asri Kartika; University of Brawijaya Sandy
Wireless sensor connectivity is one of several factors that determines the communication reliability of each node. The placement of the node depends on the area that covered by wireless coverage area, so the node placement should be optimally placed. But the other aspect is the sensor coverage area. Sensor coverage area sometimes could be different with wireless sensor coverage area. Based on that situation, it needs to optimize that situation. Genetic Algorithm is an algorithm that utilizes a heuristic approach that uses biological mechanism evolution. It used to evolution the best position of Sensor Node based on Wireless and Sensor coverage area. After the position of each node generated by Genetic Algorithm, it still needs to evaluate the wireless sensor node performance. The performance indicates that the genetic algorithm can be used to determine sensor node placement in the smart home environment. The smart home environment used to monitor event at the house such as wildfire. In this research used Quality of Services (QoS) to measure wireless sensor performance. The experimental testing scenario will be used to place several nodes that generated. The QoS performed systems reliability that produced based on 3, 4 and 5 testing nodes, the minimum and maximum of each: delay is 6.21 and 8.74 milliseconds, jitter is 0.11 and 1.59 Hz and throughput is 68.83 and 90.49 bps. Based on ETSI classification, the performance of sensor node placement is Good and acceptable in real-time systems.
Volume: 17
Issue: 1
Page: 299-306
Publish at: 2019-02-01

Dual resonance element for broadband reflectarray antenna

10.11591/ijeecs.v13.i2.pp556-561
M. Hashim Dahri , M.R. Kamaruddin , M.H. Jamaluddin , M. Inam , S. Z. N. Zool Ambia , N. Shafie
A dual resonance reflectarray unit cell element has been proposed which evolved from a square patch element to enhance its bandwidth performance. A bend in the width of the element is used to modify its dimensions and surface currents for broadband operation. The results have been analyzed in the frequency band of 24 GHz to 28 GHz. Two different combinations of its dimensions are selected for the investigating of its various performance parameters. A maximum static phase range of 432° and 255° have been obtained with selected dimensions. The wide-band features of proposed unit cell element can be used particularly to design a broadband reflectarray antenna for future fast communication systems.
Volume: 13
Issue: 2
Page: 556-561
Publish at: 2019-02-01

Architecture design for a multi-sensor information fusion processor

10.12928/telkomnika.v17i1.10180
Catherine Olivia; Institut Teknologi Bandung Sereati , Arwin Datumaya Wahyudi; Synergy of the State Apparatus' Social Media (SIMAN) Sumari , Trio; Institut Teknologi Bandung Adiono , Adang Suwandi; Institut Teknologi Bandung Ahmad
This paper discusses the design of the architecture of an information fusion processor. This processor emulates the way of human thinking, namely by drawing conclusions from the obtained collection of information. Architecture design for this processor is based on Knowledge Growing System (KGS) algorithm. KGS is a novelty in Artificial Intelligence field. Compared to other AI methods, KGS focuses on the observation of the process of the knowledge growth within human brain based on information received from the surrounding environment. By using KGS algorithm, this processor works by receiving inputs from a set of sensors and possible hypotheses obtained after the processing of the information. The processor generates a value which is called as Degree of Certainty (DoC), which show the most possible hypothesis among all alternative ones. The Processor Elements which are used to perform KGS algorithm is designed based on systolic array architecture. The design of this processor is realized with VHSIC Hardware Design Language (VHDL) and synthesized by using FPGA Quartus II.13.1. The results show that the data path which has been design is able to perform the mechanism of KGS computation.
Volume: 17
Issue: 1
Page: 362-369
Publish at: 2019-02-01

Natural Automatic Musical Note Player using Time-Frequency Analysis on Human Play

10.12928/telkomnika.v17i1.11606
Khafiizh; Universitas Dian Nuswantoro Hastuti , Arry Maulana; Universitas Dian Nuswantoro Syarif , Ahmad Zainul; Universitas Dian Nuswantoro Fanani , Aton Rustandi; Universitas Dian Nuswantoro Mulyana
This research aims to develop an automatic gamelan musical note player that can naturally play musical note as human does. A musician estimates time to hit an instrument button in an approximate time which is as close as to the target time. The tolerated time to play a note was identified based on the human play. A gamelan musician was selected to play five note sequences of songs, and the play was recorded to be analyzed. Execution time in hitting instrument buttons in human play was identified using time-frequency analysis and peak detection to define time range which can be tolerated as time value that not too fast or not too late in hitting buttons, and then the result of the analysis was used as parameters to randomize approximate time to play a note. The evaluation shows that the program played all note sequences in the approximate time as human does and the program played more natural and better than another program which played a note as exact as its time target.
Volume: 17
Issue: 1
Page: 235-245
Publish at: 2019-02-01

Private cloud storage implementation using OpenStack Swift

10.12928/telkomnika.v17i1.11599
Agustinus; Petra Christian University Noertjahyana , Juan; Petra Christian University Reno , Henry Novianus; Petra Christian University Palit , Justinus; Petra Christian University Andjarwirawan
The use of distributed and parallel computer systems is growing rapidly, requiring an appropriate system to support its work processes. One technology that supports distributed computer systems is cloud computing. This system can generate the need to maximize the use of existing computing resources, one of which is in the form of cloud-based storage. The computer laboratory of Informatics Department of Petra Christian University has very large resources, but they have not been optimized in the utilization of existing storage devices. This condition gives the idea to utilize computers in the laboratory with cloud, so the storage can be used well. This implementation used the OpenStack cloud framework, which could provide IaaS service. From some existing OpenStack services, storage management used OpenStack Swift on its processing. OpenStack Swift is a cloud-based storage service that leverages various computing resources. After the implementation process, testing was done by way of data management, so storage could store, retrieve, and delete data. In addition, testing was also done by turning off some physical machines to ensure cloud services could remain well accessible, and measure the speed of data transfer in cloud storage. The resulting data was used to evaluate the cloud storage systems that had been created.
Volume: 17
Issue: 1
Page: 218-225
Publish at: 2019-02-01

Analysis of switching and matching stubs in reconfigurable power divider with SPDT switch function

10.12928/telkomnika.v17i1.11714
N.; Universiti Teknikal Malaysia Melaka (UTeM) Edward , N. A.; Universiti Teknikal Malaysia Melaka (UTeM) Shairi , Z.; Universiti Teknikal Malaysia Melaka (UTeM) Zakaria , I. D. Saiful; Universiti Teknikal Malaysia Melaka (UTeM) Bahri
In this paper, performance analysis of switching and matching stubs was done to a reconfigurable power divider with Single Pole Double Throw (SPDT) switch function. Two designs (Design A and Design B) with different positions of switches and matching stubs were proposed. Rogers RO4350 (er=3.48, h=0.508 mm) was used in this analysis as a substrate material with copper thickness of 0.035 mm. The performance analysis was carried out based on insertion loss, return loss and isolation parameters. The simulated results showed that Design B had a better performance than Design A and was able to work as a reconfigurable power divider with SPDT switch function.
Volume: 17
Issue: 1
Page: 86-94
Publish at: 2019-02-01

Nature grasping by a cable-driven under-actuated anthropomorphic robotic hand

10.12928/telkomnika.v17i1.11006
Li; Nanyang Technological University (NTU) Tian , Nadia Magnenat; Nanyang Technological University (NTU) Thalman , Daniel; École Polytechnique Fédérale de Lausanne Thalmann , Jianmin; Nanyang Technological University (NTU) Zheng
Human hand is the best sample for humanoid robotic hand and a nature grasping is the final target that most robotic hands are pursuing. Many prior researches had been done in virtual and real for simulation the human grasping. Unfortunately, there is no perfect solution to duplicate the nature grasping of human. The main difficulty comes from three points. 1. How to 3D modelling and fabricate the real hand. 2. How actuated the robotic hand as real hand. 3. How to grasp objects in different shapes like human hand. To deal with these three problems and further to provide a partial solution for duplicate human grasping, this paper introduces our method to solve these problems from robotic hand design, fabrication, actuation and grasping plan. Our modelling progress takes only around 12 minutes that include 10 minutes of 3D scanning of a real human hand and two minutes for changing the scanned model to an articulated model by running our algorithm. Our grasping plan is based on the sampled trajectory and easy to implement for grasping different objects. Followed these steps, a seven DOF robotic hand is created and tested in the experiments.
Volume: 17
Issue: 1
Page: 1-7
Publish at: 2019-02-01

Analysis of UAV multicopter of air photography in New Yogyakarta International Airports

10.12928/telkomnika.v17i1.9255
Indreswari; Aeronautical Studies Program of Yogyakarta Higher Aeronautical Technology School Suroso , Erwhin; Aeronautical Studies Program of Yogyakarta Higher Aeronautical Technology School Irmawan
The higher the quality of the drone, the longer the drone will fly and the better the quality of the drone's photography. Survey of research location in Glagah Indah Beach, preparation of drone at ground, we plan the height of flying drones, then testing drone at ground, we measure camera calibration, and then result capture in the air and images in the air. Vehicle specifications are as follows: Frame: F450; Flight Controller: DJI Naza M-Lite; Propeller: 1045 Prop; motorbike: brushless sunnsky 980 kVa; ESC: Skywalker 40 Ampere 3s; Battery: Ace 3s Gens 5000mAH; Remote: Turnigy 9XR with Frsky Tanseiver; and camera: Xiaomi Yi 4k International edition.This drone type multicopter can penetrate the high of 100 meters to 200 meters and can air for 30 minutes, can take an area of up to 1 km while payload drones multicopter is 2.8 kg.This multicopter drone has a 12 megapixel sensor; maximum flight time of 15 minutes; speed of 20 m/s, maximum take-up speed of 6 m/s, maximum landing speed of 4m/s, temperature range when operating drone 0o to 40oC and maximum image size of 4000x3000.
Volume: 17
Issue: 1
Page: 521-528
Publish at: 2019-02-01

Fit-NES: wearable bracelet for heart rate monitoring

10.12928/telkomnika.v17i1.11611
Muhammad Ikhsan; Telkom University Sani , Giva Andriana; Telkom University Mutiara , Raden Sri Dewanto Wijaya; Telkom University Putra
The heart is a vital organ that serves to pump blood to the whole body. A heart rate can be used as a healthy body parameter conditions. Growing evidence suggests that IT-based health records play essential role to drive medical revolution especially on data storage and processing. The heart rate measurement (HRM) process usually involves wearable sensor devices to record patient’s data. This data is recorded to help the doctors to analyze and provide a better diagnose in order to determine the best treatment for the patients. Connecting the sensor system through a wireless network to a cloud server will enable the doctor to monitor remotely. This paper presents fit-NES wearable bracelet, an alternative method for integrating a HR measurement device using optical based pulse sensor and Bluetooth-based communication module. This paper is also present the benchmarking of proposed system with several various commercial HR measurement devices.
Volume: 17
Issue: 1
Page: 392-399
Publish at: 2019-02-01

Hybrid model for forecasting space-time data with calendar variation effects

10.12928/telkomnika.v17i1.10096
Suhartono; Institut Teknologi Sepuluh Nopember Suhartono , I Made Gde Meranggi; Institut Teknologi Sepuluh Nopember Dana , Santi Puteri; Institut Teknologi Sepuluh Nopember Rahayu
The aim of this research is to propose a new hybrid model, i.e. Generalized Space-Time Autoregressive with Exogenous Variable and Neural Network (GSTARX-NN) model for forecasting space-time data with calendar variation effect. GSTARX model represented as a linear component with exogenous variable particularly an effect of calendar variation, such as Eid Fitr. Whereas, NN was a model for handling a nonlinear component. There were two studies conducted in this research, i.e. simulation studies and applications on monthly inflow and outflow currency data in Bank Indonesia at East Java region. The simulation study showed that the hybrid GSTARX-NN model could capture well the data patterns, i.e. trend, seasonal, calendar variation, and both linear and nonlinear noise series. Moreover, based on RMSE at testing dataset, the results of application study on inflow and outflow data showed that the hybrid GSTARX-NN models tend to give more accurate forecast than VARX and GSTARX models. These results in line with the third M3 forecasting competition conclusion that stated hybrid or combining models, in average, yielded better forecast than individual models.
Volume: 17
Issue: 1
Page: 118-130
Publish at: 2019-02-01

Radiation pattern control of microstrip antenna in elevation and azimuth planes using EBG and pin diode.

10.11591/ijece.v9i1.pp332-340
M. K Abdulhameed , M. S. Mohamad Isa , Z. Zakaria , I.M. Ibrahim , Mowafak K. Mohsen
An important issue in wireless communication systems, which is related to the antenna gain degradation in case of changing the main direction of the antenna radiation pattern, this variation is not approval in many communications systems. In order to improve antenna radiation performances, Electromagnetic band gap (EBG) - antenna with radiation pattern control capability is presented. Mushroom-like EBG structure for suppressing surface waves has been combined, with the switching diode to produce the radiation pattern control with improving antenna characteristics of gain, directivity and efficiency. EBG of several cells are surrounded the patch antenna and placed symmetrically for the two opposite sides, generating different radiation patterns control ability in both the elevation (E) (-20° < φ < 20°) and azimuth (Z) planes (−18° < θ < 18°). At the ground plane of antenna the diodes have been switched ON and OFF states, the EBG sector properties in stop band (connecting vias) and pass band (disconnecting vias) are altered. Using CST Microwave Studio (CST MWS) the results show the flexibility in radiation pattern control for the Z and E planes using only four diodes. Antenna directivity of 10 dBi, gain 9.86 dB and efficiency 96.5% at the operating frequency of 6 GHz, more results for all direction has been stated in Table1. Significantly, unlike a conventional beam steering, this method does not suffering from gain degradation and the main lobe gain is approximately constant for all steerig angles.
Volume: 9
Issue: 1
Page: 332-340
Publish at: 2019-02-01

The antecedent of citizen intention use of e-government service

10.12928/telkomnika.v17i1.11588
Taqwa; STMIK AMIKOM Purwokerto Hariguna , Chung-Wen; Southern Taiwan University Hung , Husni Teja; Universitas Islam Negeri Syarif Hidayatullah Jakarta Sukmana
The purpose of this study was to integrate citizen perceived value into an expectation- confirmation model (ECM) and to explain citizen intention use of e-government services. After reviewing both ECM and citizen perceived values, integrated models were designed. This study was compared to the basic ECM; this study revealed that the integration of ECM with citizen perceived value can provide a concerted solution to illustrate some factors and how it can influence citizen intention use for e-government services.
Volume: 17
Issue: 1
Page: 202-209
Publish at: 2019-02-01

A study of reflection phase of reflectarray antennas with high loss organic substrates

10.11591/ijeecs.v13.i2.pp773-778
M. Y. Ismail , H. I Malik , S. R. Masrol , Sharmiza Adnan
This paper presents an analysis of reflection phase of reflectarray antenna based on high loss organic substrate material. Paper substrate material derived from recycled materials was characterized for dielectric material properties. The material shows excellent dielectric material properties with permittivity of 1.63 and loss tangent of 0.048. Effect of substrate height variation over the reflection phase has been discussed. Full wave analysis of the simulated model depicts that the reduction in substrate height after a certain point results in reflection phase distortion of reflectarray element. Validation of the results has been done by simulation, fabrication and scattering parameters measurements of a rectangular patch element on proposed substrate material. The results show a broadband frequency response of 355 MHz and a phase range of 301º at a phase gradient of 0.14 º/MHz.
Volume: 13
Issue: 2
Page: 773-778
Publish at: 2019-02-01
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