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<![CDATA[Experimental Study on Transient response of Fuel Cell ]]>
<![CDATA[A. J. Jeman, Ameerul]]>;
<![CDATA[M. S. Hannoon, Naeem]]>;
<![CDATA[Hidayat, Nabil]]>;
<![CDATA[M. H. Adam, Mohamed]]>;
<![CDATA[Musirin, Ismail]]>;
<![CDATA[V., Vijayakumar]]>
<![CDATA[ Bulletin of Electrical Engineering and Informatics Vol 8, No 2: June 2019 ]]>
Publisher : <![CDATA[Institute of Advanced Engineering and Science ]]>
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DOI: 10.11591/eei.v8i1.1431
<![CDATA[This research work discusses a control strategy to enhance the transient response of the fuel cell and boost the real and reactive power flow from grid connected to fuel cell. The current output of the fuel cell depends on the availability of hydrogen in the fuel cell stack, a battery bank is implemented to supply the transient current and to prevent it from hydrogen saturation. The battery should only supply when there is a transient. During steady state the total power is produced by the fuel cell by regulating its hydrogen input. A prototype of the system will be created to study a control scheme which regulates the current from an input source and a battery which is connected to a dc motor. The control philosophy is based on d-q transformation and subsequently generating a reference signal that is tracked by an IGBT based inverter. The speed of the motor is controlled using pulse with modulation. The dynamic modeling of the standalone fuel cell that is connected to a dc motor is carried out using MATLAB/SIMULINK platform. The simulation results show that the control scheme works well, although the dynamic response of the system can be improved. The testing carried on the prototype proves that the concept works well, but a hydrogen control scheme should be developed to improve the efficiency of the control scheme. ]]>
<![CDATA[Detection of Aedes Aegypti Larvae using Single Shot Multibox Detector with Transfer Learning ]]>
<![CDATA[AB Ghani, Mohd Ruddin]]>;
<![CDATA[Ghazali, Rozaimi]]>;
<![CDATA[Ahmad Izzuddin, Tarmizi]]>;
<![CDATA[Fani Sulaima, Mohamad]]>;
<![CDATA[Jano, Zanariah]]>;
<![CDATA[Sutikno, Tole]]>
<![CDATA[ Bulletin of Electrical Engineering and Informatics Vol 8, No 2: June 2019 ]]>
Publisher : <![CDATA[Institute of Advanced Engineering and Science ]]>
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DOI: 10.11591/eei.v8i2.1263
<![CDATA[The flavivirus epidemiology has reached an alarming rate which haunts the world population including Malaysia. In fact, World Health Organization has proposed and practised many methods of vector control through environmental management, chemical and biological orientations but still cannot fully overcome the problem. This paper proposed a detection of Aedes Aegypti larvae in water storage tank using Single Shot Multibox Detector with transfer learning. The objective of the study was to acquire the training and the performance metrics of the detection. The detection was done using SSD with Inception_V2 through transfer learning. The experimental results revealed that the probability detection scored more than 80% accuracies and there was no false alarm. These results demonstrate the effectiveness of the model approach.]]>
<![CDATA[Low Insertion Loss of Surface Mount Device Low Pass Filter at 700 MHz ]]>
<![CDATA[Anuar Khairi, Khairil]]>;
<![CDATA[Faizal Jamlos, Mohd]]>;
<![CDATA[Padmanathan, Surentiran]]>;
<![CDATA[Aminudin Jamlos, Mohd]]>;
<![CDATA[Mohamad Isa, Muammar]]>
<![CDATA[ Bulletin of Electrical Engineering and Informatics Vol 8, No 2: June 2019 ]]>
Publisher : <![CDATA[Institute of Advanced Engineering and Science ]]>
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DOI: 10.11591/eei.v8i2.1386
<![CDATA[The paper involved with the design, simulation and fabrication of 6th order elliptical-based Surface Mount Device (SMD) LPF with cutoff frequency at 700 MHz. Fabricated LPF is consisted of four PCB layers which components of SMD are soldered on the top layer. Another three layers is for grounding and shielding, power supply and grounding void. The four layers is crucial to avoid interference between components.    The research has find out that the momentum simulation is definitely required to improve the signals response compared to a normal simulation by ADS software. The comparison between momentum simulated versus measured and normal simulated versus measured is 0.2 dB and 29 dB correspondingly. Such huge difference leads to conclusion that momentum simulation is saving time without having much struggles and efforts to get optimum readings. The Proposed SMD LPF has a very low insertion loss of 0.965dB with a transition region of 195 MHz which is good steepness to avoid any image frequency. ]]>
<![CDATA[Distributed Scheme To Authenticate Data Storage Security In Cloud Computing ]]>
<![CDATA[Rakesh, B.]]>;
<![CDATA[Lalitha, K.]]>;
<![CDATA[Sushama, C.]]>;
<![CDATA[Parveen Sultana, H.]]>;
<![CDATA[Rajitha, O.]]>
<![CDATA[ Bulletin of Electrical Engineering and Informatics Vol 8, No 2: June 2019 ]]>
Publisher : <![CDATA[Institute of Advanced Engineering and Science ]]>
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DOI: 10.11591/eei.v8i2.1475
<![CDATA[Cloud Computing is the revolution in current generation IT enterprise. Cloud computing displaces database and application software to the large data centers, where the management of services and data may not be predictable, where as the conventional solutions, for IT services are under proper logical, physical and personal controls. This aspect attribute, however comprises different security challenges which have not been well understood. It concentrates on cloud data storage security which has always been an important aspect of quality of service (QOS). In this paper, we designed and simulated an adaptable and efficient scheme to guarantee the correctness of user data stored in the cloud and also with some prominent features. Homomorphic token is used for distributed verification of erasure – coded data. By using this scheme, we can identify misbehaving servers. In spite of past works, our scheme supports effective and secure dynamic operations on data blocks such as data insertion, deletion and modification. In contrast to traditional solutions, where the IT services are under proper physical, logical and personnel controls, cloud computing moves the application software and databases to the large data centers, where the data management and services may not be absolutely truthful. This effective security and performance analysis describes that the proposed scheme is extremely flexible against malicious data modification, convoluted failures and server clouding attacks.]]>
<![CDATA[High Speed Internet Development in Africa Using 4GLTE Technology-A Review ]]>
<![CDATA[Nj, Mohamed]]>;
<![CDATA[S., Shahrin]]>;
<![CDATA[S., Nanna]]>;
<![CDATA[Fairuz Iskandar Othman, Mohd]]>
<![CDATA[ Bulletin of Electrical Engineering and Informatics Vol 8, No 2: June 2019 ]]>
Publisher : <![CDATA[Institute of Advanced Engineering and Science ]]>
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DOI: 10.11591/eei.v8i1.684
<![CDATA[African continent is ranked second biggest world’s regions populated and having a huge amount of natural resources to be locally transformed or outsourced overseas for this purpose. The traditional telecommunications system helped connect people and enabled them managing business and trading in Africa for long-time; many African countries got embarked early into some process of changing their network and technology systems during the first years of the information age. Over few decades ago, the introduction of the new telecom methods and techniques influenced much African countries’ growth on different perspectives. The situation triggered in people an interest and curiosity. They analyzed the factors supporting such changes, which in the case of this paper is all about the advent and adoption of LTE/4GLTE technologies including its services commercialization in Africa. This articles review attempts to draw up an overview of 4GLTE networks technologies and its internet; it includes the current evolution of telecom’s networks within and even beyond African continent, assisted by 4GLTE expansion. An extended view is provided throughout this article’s development with respect to what could be expected (or is missing) for the sake of this continent’s telecom’s infrastructures enhancement and a better QoS to Africa’s dwellers.]]>
<![CDATA[Evaluation of patient electrocardiogram datasets using signal quality indexing ]]>
<![CDATA[Nayan, Nazrul Anuar]]>
<![CDATA[ Bulletin of Electrical Engineering and Informatics Vol 8, No 2: June 2019 ]]>
Publisher : <![CDATA[Institute of Advanced Engineering and Science ]]>
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DOI: 10.11591/eei.v8i2.1289
<![CDATA[Electrocardiogram (ECG) is widely used in the hospital emergency rooms for detecting vital signs, such as heart rate variability and respiratory rate. However, the quality of the ECGs is inconsistent. ECG signals lose information because of noise resulting from motion artifacts. To obtain an accurate information from ECG, signal quality indexing (SQI) is used where acceptable thresholds are set in order to select or eliminate the signals for the subsequent information extraction process. A good evaluation of SQI depends on the R-peak detection quality. Nevertheless, most R-peak detectors in the literature are prone to noise and motion artifacts. This paper assessed and compared five peak detectors from different resources. The two best peak detectors were further tested using MIT-BIH arrhythmia database and then used for SQI evaluation. These peak detectors robustly detected the R-peak for signals that include noise. Finally, the overall SQI of three patient datasets, namely, Fantasia, CapnoBase, and MIMIC-II, was conducted by providing the interquartile range (IQR) and median SQI of the signals as the outputs. The evaluation results revealed that the R-peak detectors developed by Clifford and Behar showed accuracies of 98% and 97%, respectively. By introducing SQI and choosing only high-quality ECG signals, more accurate vital sign information will be achieved.]]>
<![CDATA[Efficient FPGA implementation of high speed digital delay for wideband beamforming using parallel architectures ]]>
<![CDATA[Carlo Cardarilli, Gian]]>;
<![CDATA[Luca Di Nunzio, Ing.]]>;
<![CDATA[Fazzolari, Rocco]]>;
<![CDATA[Giardino, Daniele]]>;
<![CDATA[Matta, Marco]]>;
<![CDATA[Re, Marco]]>;
<![CDATA[Spanò, Sergio]]>;
<![CDATA[Simone, Lorenzo]]>
<![CDATA[ Bulletin of Electrical Engineering and Informatics Vol 8, No 2: June 2019 ]]>
Publisher : <![CDATA[Institute of Advanced Engineering and Science ]]>
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DOI: 10.11591/eei.v8i2.1483
<![CDATA[In this paper, the authors present an FPGA implementation of a digital delay for beamforming applications. The proposed digital delay is based on a new architecture about the Parallel FIR Filter which is used to describe the Parallel Farrow Filter. Such architecture allows to reach very high processing rate with wideband signals and it is suitable to be used along with Time-Interleaved Analog to Digital Converters (TI-ADC).]]>
<![CDATA[The Effects of Rain Fade on Millimetre Wave Channel in Tropical Climate ]]>
<![CDATA[Ali Budalal, Asma]]>;
<![CDATA[Md Rafiqul, Islam]]>;
<![CDATA[Hadi Habaebi, Mohamed]]>;
<![CDATA[Abd. Rahman, Tharek]]>
<![CDATA[ Bulletin of Electrical Engineering and Informatics Vol 8, No 2: June 2019 ]]>
Publisher : <![CDATA[Institute of Advanced Engineering and Science ]]>
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DOI: 10.11591/eei.v8i2.1487
<![CDATA[Abstract—The main objective of this paper to determine multipath and time varying channel behavior of short- terrestrial millimetre-wave point-to-point radio links. With considering of rain fade in tropical climate. In an attempt to invigorate the impact of rain attenuation on mm-wave channel parameters such as the RMS delay spread, path loss received power strength and Rician distribution with a K factor. A brief analysis of rain fading was presented based on the simultaneous measurement of one-minute rain rate and its effects on a short experimental link of 38 GHz. Rain fade average is observed as high as 16 dB for 300 m path at about 125 mm/hr rain intensity. The statistical spatial channel mode (SSCM)simulation software was utilized for an operating frequency of 38 GHz. To generate of power delay profile (PDP). For both omnidirectional and directional antenna. The RMS delay spread, path loss has been estimated using the environmental parameters of Kuala Lumpur city which illustrates the theoretical performances of 5G in Malaysia. it is observed that RMS delay spread, path loss received power strength and K factor effected dramatically by rein fade. (SSCM) simulation software has to be modified to consider rain fade dynamic in the tropical area. This study is important for understanding signal propagation phenomena in short distance and enabling the utilization of the millimeter wave band in outdoor activities for 5 G communication system in outdoor in tropical regions.]]>
<![CDATA[Classification of different types of metal from recyclable household waste for automatic waste separation system ]]>
<![CDATA[Yusoff, Siti Hajar]]>;
<![CDATA[Mahat, Sazali]]>;
<![CDATA[Midi, Nur Shahida]]>;
<![CDATA[Zaini, Syasya Azra]]>
<![CDATA[ Bulletin of Electrical Engineering and Informatics Vol 8, No 2: June 2019 ]]>
Publisher : <![CDATA[Institute of Advanced Engineering and Science ]]>
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DOI: 10.11591/eei.v8i2.1488
<![CDATA[Nowadays, solid waste has become a major problem in Malaysia. However, most people in Malaysia are not aware and take this problem for granted. The rising number of population and massive development in recent years indirectly generated an enormous value of household waste, making the household waste the main generator for solid waste in Malaysia. It stated that only 5 percent of an average 30,000 tons of waste have been recycled in Malaysia. The purpose of the paper is to design a system to separate the metal recyclable household waste automatically and record the data waste collected. There are total of four detectors used to separate the non-metal, steel, copper and aluminum metal waste. The average time used to complete metal separation process by using the proposed prototype is 14.5 seconds. This paper includes a mechanical part, programming part, an electronic design and also the data collected from this proposed system. The system will be programmed using Arduino Mega as a microcontroller to control all the electronic component in the system.]]>
<![CDATA[Long Range Channel Characteristics Through Foliage ]]>
<![CDATA[Binti Masadan, Nurul Afifah]]>;
<![CDATA[Hadi Habaebi, Mohamed]]>;
<![CDATA[Hajar Yusoff, Siti]]>
<![CDATA[ Bulletin of Electrical Engineering and Informatics Vol 8, No 2: June 2019 ]]>
Publisher : <![CDATA[Institute of Advanced Engineering and Science ]]>
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DOI: 10.11591/eei.v8i2.1489
<![CDATA[Long Range Low Power Wide Area Network (LoRa LPWAN) technology is unique and remarkable technology because of its long-range coverage, low power consumption and low cost system architecture. These features have allowed Lora LPWAN to become a favorable option for performing communication in most of IoT wireless applications. In this paper, the foliage effect has been studied in terms of attenuation and its overall contribution to the path-loss and link budget calculations. Specifically, 5 tree types were studied and their contribution to the path loss were quantified for different path crossings (e.g., trunk, tree-top and branches). The trees are Licuala Grandis, Mimusops Elengi, Mangifera Indica, Cyrtostachys Renda and Livistona Chinensis. Mimusops Elengi tree gave the strongest mean foliage attenuation accumulating up to 20 dB, due to its big size and crown density. Trunks contribute even higher attenuation in comparison to tree-tops and branches. The Okumura/Hata, Log-normal shadowing and foliage models are used as references for this propagation models development in this paper. Our study showed that Okumura fails to capture the effect of foliage in an environment rich in trees and biodiversity. This demonstrates the need for considering the tropical environment where the characterization of foliage attenuation plays an important role in determining the propagation model path-loss and link budget needed for network design and planning.]]>
