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  Subjects -> ENGINEERING (Total: 2526 journals)
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    - ELECTRICAL ENGINEERING (121 journals)
    - ENGINEERING (1326 journals)
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ELECTRICAL ENGINEERING (121 journals)                     

Showing 1 - 124 of 124 Journals sorted alphabetically
3C TIC     Open Access   (Followers: 3)
Acta Electronica Malaysia     Open Access  
Acta Universitatis Sapientiae Electrical and Mechanical Engineering     Open Access  
Actuators     Open Access   (Followers: 4)
Advances in Electrical and Electronic Engineering     Open Access   (Followers: 5)
Advances in Electrical Engineering     Open Access   (Followers: 33)
Advances in Microelectronic Engineering     Open Access   (Followers: 13)
Advances in Signal Processing     Open Access   (Followers: 13)
American Journal of Electrical and Electronic Engineering     Open Access   (Followers: 24)
American Journal of Sensor Technology     Open Access   (Followers: 4)
APSIPA Transactions on Signal and Information Processing     Open Access   (Followers: 9)
Archives of Control Sciences     Open Access   (Followers: 3)
Archives of Electrical Engineering     Open Access   (Followers: 13)
Atom Indonesia     Open Access   (Followers: 1)
Balkan Journal of Electrical and Computer Engineering     Open Access  
Bulletin of Electrical Engineering and Informatics     Open Access   (Followers: 8)
Case Studies in Mechanical Systems and Signal Processing     Open Access  
Circuits, Systems, and Signal Processing     Hybrid Journal   (Followers: 13)
Computers & Electrical Engineering     Hybrid Journal   (Followers: 9)
Current Trends in Signal Processing     Full-text available via subscription   (Followers: 5)
Edu Elektrika Journal     Open Access   (Followers: 1)
Electric Power Components and Systems     Hybrid Journal   (Followers: 8)
Electric Power Systems Research     Partially Free   (Followers: 19)
Electrica     Open Access  
Electrical and Electronic Engineering     Open Access   (Followers: 36)
Electrical and Power Engineering Frontier     Open Access   (Followers: 28)
Electrical Engineering     Hybrid Journal   (Followers: 21)
Electrical Engineering and Automation     Open Access   (Followers: 8)
Electrical Engineering and Power Engineering     Open Access  
Electrical Engineering in Japan     Hybrid Journal   (Followers: 8)
Electrical, Control and Communication Engineering     Open Access   (Followers: 13)
Elektron     Open Access  
Elkha : Jurnal Teknik Elektro     Open Access  
Emerging and Selected Topics in Circuits and Systems     Hybrid Journal   (Followers: 9)
ETRI Journal     Open Access  
EURASIP Journal on Advances in Signal Processing     Open Access   (Followers: 7)
Ferroelectrics     Hybrid Journal   (Followers: 1)
Ferroelectrics Letters Section     Hybrid Journal   (Followers: 1)
Frequenz     Hybrid Journal   (Followers: 1)
Frontiers of Electrical and Electronic Engineering     Hybrid Journal   (Followers: 8)
IEA Electricity Information     Full-text available via subscription   (Followers: 4)
IEEE Access     Open Access   (Followers: 96)
IEEE Electrical Insulation Magazine     Full-text available via subscription   (Followers: 50)
IEEE Signal Processing Magazine     Full-text available via subscription   (Followers: 80)
IEEE Transactions on Control of Network Systems     Hybrid Journal   (Followers: 17)
IEEE Transactions on Dielectrics and Electrical Insulation     Hybrid Journal   (Followers: 17)
IEEE Transactions on Signal and Information Processing over Networks     Full-text available via subscription   (Followers: 11)
IEEJ Transactions on Electrical and Electronic Engineering     Hybrid Journal   (Followers: 16)
IET Control Theory & Applications     Hybrid Journal   (Followers: 24)
IET Electric Power Applications     Hybrid Journal   (Followers: 33)
IET Electrical Systems in Transportation     Hybrid Journal   (Followers: 10)
IET Nanodielectrics     Open Access  
IET Smart Grid     Open Access  
IETE Journal of Education     Open Access   (Followers: 4)
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems)     Open Access   (Followers: 3)
Indonesian Journal of Electrical Engineering and Computer Science     Open Access   (Followers: 16)
Ingeniería Electrónica, Automática y Comunicaciones     Open Access  
Integrated Ferroelectrics: An International Journal     Hybrid Journal  
International Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems     Open Access   (Followers: 10)
International Journal of Electrical and Computer Engineering     Open Access   (Followers: 11)
International Journal of Electrical Engineering Education     Hybrid Journal   (Followers: 6)
International Journal of Electrical Power & Energy Systems     Open Access   (Followers: 25)
International Journal of Emerging Electric Power Systems     Hybrid Journal   (Followers: 7)
International Journal of Monitoring and Surveillance Technologies Research     Full-text available via subscription   (Followers: 3)
International Journal of Nano Devices, Sensors and Systems     Open Access   (Followers: 12)
International Journal of Nuclear Security     Open Access   (Followers: 1)
International Journal of Turbomachinery, Propulsion and Power     Open Access   (Followers: 8)
International Transaction of Electrical and Computer Engineers System     Open Access   (Followers: 2)
International Transactions on Electrical Energy Systems     Hybrid Journal   (Followers: 9)
Izvestiya Vysshikh Uchebnykh Zavedenii. Materialy Elektronnoi Tekhniki : Materials of Electronics Engineering     Full-text available via subscription  
J3eA     Open Access   (Followers: 2)
JAREE (Journal on Advanced Research in Electrical Engineering)     Open Access  
Journal of Control, Automation and Electrical Systems     Hybrid Journal   (Followers: 9)
Journal of Electrical and Computer Engineering     Open Access   (Followers: 9)
Journal of Electrical and Computer Engineering Innovations     Open Access   (Followers: 4)
Journal of Electrical and Electronics Engineering Research     Open Access   (Followers: 23)
Journal of Electrical Bioimpedance     Open Access   (Followers: 2)
Journal of Electrical Engineering     Open Access   (Followers: 30)
Journal of Electrical Engineering & Electronic Technology     Hybrid Journal   (Followers: 7)
Journal of Electrical Systems and Information Technology     Open Access   (Followers: 7)
Journal of Electrical, Electronics and Informatics     Open Access  
Journal of Field Robotics     Hybrid Journal   (Followers: 2)
Journal of International Council on Electrical Engineering     Open Access  
Journal of Micro-Bio Robotics     Hybrid Journal  
Journal of Microwaves, Optoelectronics and Electromagnetic Applications     Open Access   (Followers: 10)
Journal of Power Technologies     Open Access   (Followers: 7)
Journal of the Society for Information Display     Hybrid Journal  
Journal of World's Electrical Engineering and Technology     Open Access   (Followers: 2)
Journal of Zhejiang University SCIENCE C     Hybrid Journal  
Jurnal Ilmiah Mahasiswa SPEKTRUM     Open Access  
Jurnal Nasional Teknik Elektro     Open Access   (Followers: 4)
Jurnal Rekayasa Elektrika     Open Access  
Jurnal Teknik Elektro     Open Access  
Jurnal Teknik Elektro dan Komputer     Open Access  
Kinetik : Game Technology, Information System, Computer Network, Computing, Electronics, and Control     Open Access  
Majalah Ilmiah Teknologi Elektro : Journal of Electrical Technology     Open Access   (Followers: 2)
Majlesi Journal of Electrical Engineering     Open Access   (Followers: 1)
Micro and Nano Systems Letters     Open Access   (Followers: 5)
Nanotechnology Development     Open Access   (Followers: 19)
npj Materials Degradation     Open Access  
Oil, Gas, Coal and Electricity - Quarterly Statistics - Electricite, charbon, gaz et petrole - Statistiques trimestrielles     Full-text available via subscription   (Followers: 9)
Periodica Polytechnica Electrical Engineering and Computer Science     Open Access  
Photovoltaics, IEEE Journal of     Hybrid Journal   (Followers: 16)
Quantum Beam Science     Open Access   (Followers: 1)
Recent Advances in Communications and Networking Technology     Hybrid Journal   (Followers: 3)
Recent Advances in Electrical & Electronic Engineering     Hybrid Journal   (Followers: 9)
Research & Reviews : Journal of Embedded System & Applications     Full-text available via subscription   (Followers: 5)
Russian Electrical Engineering     Hybrid Journal   (Followers: 4)
SID Symposium Digest of Technical Papers     Hybrid Journal  
Simetris : Jurnal Teknik Mesin, Elektro dan Ilmu Komputer     Open Access  
Sustainable Energy, Grids and Networks     Hybrid Journal   (Followers: 5)
Sustainable Energy, IEEE Transactions on     Hybrid Journal   (Followers: 16)
Synthesis Lectures on Electrical Engineering     Full-text available via subscription   (Followers: 2)
System analysis and applied information science     Open Access  
Telematique     Open Access  
The Scientific Bulletin of Electrical Engineering Faculty     Open Access  
Transactions of the International Society for Music Information Retrieval     Open Access  
Transactions on Environment and Electrical Engineering     Open Access  
Trends in Electrical Engineering     Full-text available via subscription   (Followers: 4)
Tri Dasa Mega : Jurnal Teknologi Reaktor Nuklir     Open Access  
Turkish Journal of Electrical Engineering and Computer Science     Open Access   (Followers: 2)
Universal Journal of Electrical and Electronic Engineering     Open Access   (Followers: 6)
Wireless Engineering and Technology     Open Access   (Followers: 4)
Електротехніка і Електромеханіка     Open Access  

           

Journal Cover
Bulletin of Electrical Engineering and Informatics
Number of Followers: 8  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2089-3191 - ISSN (Online) 2302-9285
Published by Universitas Ahmad Dahlan Homepage  [18 journals]
  • Efficient FPGA implementation of high speed digital delay for wideband
           beamforming using parallel architectures

    • Authors: Gian Carlo Cardarilli, Ing. Luca Di Nunzio, Rocco Fazzolari, Daniele Giardino, Marco Matta, Marco Re, Sergio Spanò, Lorenzo Simone
      Abstract: 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).
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • A Novel approach for Asynchronous Microprocessor Design and its
           Implementation on FPGA

    • Authors: Archana Rani, Naresh Grover
      Abstract: The asynchronous processors have a number of advantages, especially in SoC (System on chip) including reduced crosstalk between analog and digital circuits, ease of integrating multi-rate circuits, ease of component reuse and less power consumption as well. This paper presents processor architecture design, its implementation followed by processor instruction set, data path flow for fetching unit, Register type, I-type and load /store type instruction flow. Thereafter this paper illustrates control unit design of processor that shows the controlling of signals for different units in processor design. Further, a complete internal structure is shown followed by features of novel processor architecture. It has capability of handling even I-Type, R-Type and Jump instructions with multiplier instruction packet. Moreover, it uses separate memory for instructions and data read-write that can be changed at any time.In the end, results have been shown using implementation windows. The complete design has been written using VHDL and then simulated and synthesized by XILINX ISE tool.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Task Mapping and Routing Optimization for Hard Real-Time Networks-On-Chip

    • Authors: M. Norazizi Sham Mohd Sayuti, Farida Hazwani Mohd Ridzuan, Zul Hilmi Abdullah
      Abstract: Interference from high priority tasks and messages in a hard real-time Networks-On-Chip (NoC) create computation and communication delays. As the delays increase in number, maintaining the system’s schedulability become difficult. In order to overcome the problem, one way is to reduce interference in the NoC by changing task mapping and network routing. Some population-based heuristics evaluate the worst-case response times of tasks and messages based on the schedulability analysis, but requires a significant amount of optimization time to complete due to the complexity of the evaluation function. In this paper, we propose an optimization technique that explore both parameters simultaneously with the aim to meet the schedulability of the system, hence reducing the optimization time. One of the advantages from our approach is the unrepeated call to the evaluation function, which is unaddressed in the heuristics that configure design parameters in stages. The results show that a schedulable configuration can be found from the large design space.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Evaluation of patient electrocardiogram datasets using signal quality
           indexing

    • Authors: Nazrul Anuar Nayan
      Abstract: 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.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Analysis of Wavelet-Based Full Reference Image Quality Assessment
           Algorithm

    • Authors: Faizah Mokhtar, Ruzelita Ngadiran, Taha Basheer, Amir Nazren Abdul Rahim
      Abstract: Measurement of Image Quality plays an important role in numerous image processing applications such as forensic science, image enhancement, medical imaging, etc. In recent years, there is a growing interest among researchers in creating objective image quality assessment (IQA) algorithms that can correlate well with perceived quality. A significant progress has been made for full reference (FR) IQA problem in the past decade. In this paper, we are comparing 5 selected FR IQA algorithms on TID2008 image datasets. The performance and evaluation results are shown in graphs and tables. The results of quantitative assessment showed wavelet-based IQA algorithm outperformed over the non-wavelet based IQA method except for WASH algorithm which the prediction value only outperformed for certain distortion types since it takes into account the essential structural data content of the image.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • High Speed Internet Development in Africa Using 4GLTE Technology-A Review

    • Authors: Mohamed Nj, Shahrin S., Nanna S., Burairah H.
      Abstract: 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.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • The Effects of Rain Fade on Millimetre Wave Channel in Tropical Climate

    • Authors: Asma Ali Budalal, Islam Md Rafiqul, Mohamed Hadi Habaebi, Tharek Abd. Rahman
      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.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Classification of different types of metal from recyclable household waste
           for automatic waste separation system

    • Authors: Siti Hajar Yusoff, Sazali Mahat, Nur Shahida Midi, Syasya Azra Zaini
      Abstract: 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.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Long Range Channel Characteristics Through Foliage

    • Authors: Nurul Afifah Binti Masadan, Mohamed Hadi Habaebi, Siti Hajar Yusoff
      Abstract: 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.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Improved voice quality with the combination of transport layer & audio
           codec for wireless devices

    • Authors: Othman O. Khalifa, Raihan Jannati Binti Roslin, Sharif Shah Newaj Bhuiyan
      Abstract: Improving voice quality over wireless communication becomes a demanding feature for social media apps like facebook, whatsapp and other communication channels. Voice-over-internet protocol (VoIP) helps us to make quick telephone calls over the internet. It includes various mechanism which are signaling, controlling and transport layer. Over wireless links, packet loss and high transmission delay damage voice quality. Here VoIP quality will be measured by three main elements which are signaling protocol, audio codec and transport layer. To improve the overall voice quality, we need to combine these three elements properly to get the best score. Otherwise perceptual speech quality will not be the right tool to measure the voice quality. Here we will use Mean Opinion Score (MOS) for calculated jitter values and end to end delay. At the end, best combination of audio codec & signaling protocol produced the quality speech.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Automatic household waste separation system based on resistance value and
           moisture content

    • Authors: Nurul Nazihah Ahamad, Sarah Yasmin Mohamad, Nur Shahida Midi, Siti Hajar Yusoff, Faridah Abd Rahman
      Abstract: In the new era of globalization, waste disposal has turned into an immense concern among the nation. Nowadays, almost every part of the world is confronting a huge issue of improper disposal, segregation and recycling solid waste. Due to rapid growth in economy, industrialization and urbanization, there is also a rapid increase of capacity and volume of solid waste. As a result, improper management of solid waste lead to disturbance to the environment and human health. In this paper, a fully automated waste separation system to discriminate residual and recyclable waste is proposed. The system is designed to focus on household waste, since household waste ranks the highest volume of waste among others. It is designed to separate household waste into recyclable and residual waste according to the materials’ state, which is dry and wet, by employing a moisture sensor to the waste separation system.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Principal component analysis for human gait recognition system

    • Authors: Othman O. Khalifa, Bilal Jawed, Sharif Shah Newaj Bhuiyn
      Abstract: This paper represents a method for Human Recognition system using  Principal Component Analysis. Human Gait recognition works on the gait of walking subjects to identify people without them knowing or without their permission. The initial step in this kind of system is to generate silhouette frames of walking human. A number of features couldb be exytacted from these frames such as centriod ratio, heifht, width and orientation. The Principal Component Analysis (PCA) is used for the extracted features to condense the information and produces the main components that can represent the gait sequences for each waiking human. In the testing phase, the generated gait sequences are recognized by using a minimum distance classifier based on eluclidean distance matched with the one that already exist in the database used to identify walking subject.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • The Disruptometer: An Artificial Intelligence Algorithm for Market
           Insights

    • Authors: Mimi Aminah binti Wan Nordin, Dmitry Vedenyapin, Muhammad Fahreza Alghifari, Teddy Surya Gunawan
      Abstract: Social media data mining is developing to be a mainstream tool for marketing insights in today’s world, due to the abundance of data and often freely accessed information. In this paper, we propose a framework for market research purposes called the Disruptometer. The algorithm uses keywords to provide different types of market insights from data crawling. The preliminary algorithm data-mines information from Twitter and outputs 2 parameters – Product-to-Market Fit and Disruption Quotient, which is obtained from a brand’s customer value proposition, problem space, and incumbent space. The algorithm has been tested with a venture capitalist portfolio company and market research firm to show high correlated results. Out of 4 brand use cases, 3 obtained identical results with the analysts ‘studies.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Microstrip patch antenna with defected ground structure for biomedical
           application

    • Authors: Md. Shazzadul Islam, Muhammad I. Ibrahimy, S. M. A. Motakabber, A. K. M. Zakir Hossain, S. M. Kayser Azam
      Abstract: Proper narrowband antenna design for wearable devices in the biomedical application is a significant field of research interest. In this work, defected ground structure-based microstrip patch antenna has been proposed that can work for narrowband applications. The proposed antenna works exactly for a single channel of ISM band. The resonant frequency of the antenna is 2.45 GHz with a return loss of around -30 dB. The -10dB impedance bandwidth of the antenna is 20 MHz (2.442-2.462 GHz), which is the bandwidth of channel 9 in ISM band. The antenna has achieved a high gain of 7.04 dBi with an increase of 17.63% antenna efficiency in terms of realized gain by using defected ground structure. Three linear vector arrays of arrangement 1×2, 1×4 and 1×8 have been designed to validate the proposed antenna performances as an array. The proposed antenna is light weighted, low cost, easy to fabricate and with better performances that makes it suitable for biomedical WLAN applications.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Design and Comparison of Printed Antennas using Meander Line Technique

    • Authors: Nur Hamizah Muhamad Mokhtar, Norun Abdul Malek, Ahmad Zamani Jusoh, Khamis Ali, Farah Nadia Mohd Isa, Farah Diyana Abdul Rahman
      Abstract: The interest for compact antennas in wireless communication increase due to the portability and mobility of the communication devices. Generally, an antenna at low frequency exhibits in large physical size. This project investigates the design of an antenna at 400 MHz. The simulation of the antenna has been performed using CST MWS. Since medical applications are dealing with low frequency, it will lead to large size of antenna which brings a challenge for wireless personal area network (WPAN). It is well known that the antenna performance decreases (according to Chu’s equation) as the size of antenna decreases. Therefore, antenna miniaturization using Meander Line (ML) will be taking place to overcome the challenges. Thus, this paper presents a comparison between i) printed dipole antenna without meander line technique, ii) printed dipole with meander line technique and iii) printed monopole antenna with meander line technique. The results show that an estimation of reduction size by 50% can be achieved using Meander Line technique.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • A novel optimization harmonic elimination technique for cascaded
           multilevel inverter

    • Authors: Ezzidin Hassan Aboadla, Sheroz Khan, Mohamed H. Habaebi, Teddy Surya Gunawan, Belal A. Hamida, Mashkuri Bin Yaacob, Ali Aboadla
      Abstract: The main goal of utilizing Selective Harmonic Elimination (SHE) techniques in Multilevel Inverters (MLI) is to produce a high-quality output voltage signal with a minimum Total Harmonic Distortion (THD). By calculating N switching angles, SHE technique can eliminate (N-1) low order odd harmonics of the output voltage waveform. To optimized and obtained these switching angles, N of nonlinear equations should be solved using a numerical method. Modulation index (m) and duty cycle play a big role in selective harmonic elimination technique to obtain a minimum harmonic distortion and desired fundamental component voltage. In this paper, a novel Optimization Harmonic Elimination Technique (OHET) based on SHE scheme is proposed to re-mitigate Total Harmonic Distortion. The performance of seven-level H-bridge cascade inverter is evaluated using PSIM and validated experimentally by developing a purposely built microcontroller-based printed circuit board.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Silicon carbide schottky diodes forward and reverse current properties
           upon fast electron radiation

    • Authors: M. Azim Khairi, Rosminazuin Ab. Rahim, Norazlina Saidin, Yusof Abdullah, N. F. Hasbullah
      Abstract: This paper investigates on the reaction of 10 and 15MGy, 3MeV electron irradiation upon off-the-shelves (commercial) Silicon Carbide Schottky diodes from Infineon Technologies (model: IDH08SG60C) and STMicroelectronics (model: STPSC806). Such irradiation reduces the forward-bias current. The reduction is mainly due to the significant increase of the series resistance (i.e. Infineon: 1.45Ω at before irradiation → 121×103 Ω at 15MGy); STMicroelectronics: 1.44Ω at before irradiation → 2.1×109 Ω at 15MGy). This increase in series resistance gives 4.6 and 8.2 orders of magnitude reduction for the forward-bias current density of Infineon and STMicroelectronics respectively. It is also observed that the ideality factor and the saturation current of the diodes increases with increasing dose (i.e. ideality factor- Infineon: 1.01 at before irradiation → 1.05 at 15MGy; STMicroelectronics: 1.02 at before irradiation → 1.3 at 15MGy saturation current- Infineon: 1.6×10-17A at before irradiation → 2.5×10-17A at 15MGy; STMicroelectronics: 2.4×10-15A at before irradiation → 8 × 10-15A at 15MGy). Reverse-bias leakage current density in model by Infineon increases by one order of magnitude after 15MGy irradiation, however, in model by STMicroelectronics decreases by one order of magnitude. Overall, for these particular samples studied, Infineon devices have shown to be better in quality and more radiation resistance toward electron irradiation in forward-bias operation while STMicroelectronics exhibit better characteristics in reverse-bias operation.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Intelligent Flood Disaster Warning on the fly: Developing IoT-based
           Management Platform and using 2-Class Neural Network to Predict Flood
           Status

    • Authors: Salami Ifedapo Abdullahi, Mohamed Hadi Habaebi, Noreha Abd Malik
      Abstract: The number of natural disasters occurring yearly is increasing at an alarming rate which has caused a great concern over the well-being of human lives and economy sustenance. The rainfall pattern has also been affected and this has caused immense amount of flood cases in recent times. Flood disasters are damaging to economy and human lives. Yearly, millions of people are affected by floods in Asia alone. This has brought the attention of the government to develop a flood forecasting method to reduce flood casualties. In this article, a flood mitigation method will be evaluated which incorporates a miniaturized flow, water level sensor and pressure gauge. The data from the two sensors are used to predict flood status using a 2-class neural network. Real-time monitoring of the data from the sensor into Thingspeak channel were possible with the use of NodeMCU ESP8266. Furthermore, Microsoft’s Azure Machine Learning (AzureML) has built-in 2-class neural network which was used to predict flood status according to predefine rule. The prediction model has been published as Web services through AzureML service and it enables prediction as new data are available. The experimental result showed that using 3 hidden layers has the highest accuracy of 98.9% and precision of 100% when 2-class neural network is used.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Design and implementation of a series switching SPSI for PV cell to use in
           carrier based grid synchronous system

    • Authors: Tawfikur Rahman, S. M. A. Motakabber, Muhammad I. Ibrahimy, A. H. M. Zahirul Alam
      Abstract: A carrier-based grid synchronous method is proposed to develop the system efficiency, phase and power quality of the inverter output waves. The operating principle of a single-phase phase synchronous inverter (SPSI) is introduced, with proper synchronous paid to the switching-frequency synchronizing voltage made by the interleaved process, as well as actual mitigation approaches. In the construction of the SPSI, input and output filters are electrically coupled with the two sides of an inverter. The inverter power electronic switches and other electrical components are operated by carrier-based grid synchronous controller (CBGSC) with PWM regulator. The SPSI is designed and implemented with the Toshiba 40WR21 IGBT, Digital Microcontroller pulse controller (DMPC) and 4N35 Optocoupler with a fundamental frequency of 50Hz. The other parameters are considered as load resistance, R_L = 11Ω, duty cycle, 85%, carrier frequency, 2.5kHz and input DC voltage,  ± 340V. In addition, LCL lowpass grid filters are used to convert squire wave to sine wave with required phase and frequency. Finally, the simulated and experimental results obtained with a carrier-based grid synchronous SPSI experimental prototype are exposed for justification, showing the phase error of 55% improvement, reduced 11% of THD and the conversion efficiency of 97.02% highly predicted by the proposed design technique to improve the microgrid system.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Capacitive Electrode Sensor Implanted on a Printed Circuit Board Designed
           for Continuous Water Level Measurement

    • Authors: Salami Ifedapo Abdullahi, Mohamed Hadi Habaebi, Noreha Abdul Malik
      Abstract: Water level sensors are one of the practical ways to get the actual measurement of the depth of a dam or canal. The ease of deployment and easy data acquisition makes them widely used in many fields. Therefore, it will be advantageous to have a miniaturized water level sensor for easier mobility and deployment. A novel method for measuring water level using a Printed Circuit Board has been proposed in this paper. The design stages of circuit sketching, printing of sketch on PCB and etching are discussed for the electrode water level sensor. A signal conditioning circuit is necessary to maintain a steady flow of current from the power source. The fabricated electrode water level sensor was tested based on its capacitive effect while charging up and the amount of current at each electrode finger at the saturation stage. The hardware enablers for this test were the multimeter and LCR meter. Arduino microprocessor was used to test and measure the transient response time for each electrode finger. The transient response sensitivity of the electrode sensor is measured to be 0.0873 millisecond/cm while the resolution of the electrode sensor is 0.1cm over a range of 30cm water level. A multiple correlation of 0.921 was achieved for the water level, measured current and measured capacitance with P-values less than 0.05 indicating strength of the data obtained from the tests conducted. The result showed strong evidence that the electrode water level sensor can be an alternative method of measuring water level.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Investigation on the Mass Sensitivity of Quartz Crystal Microbalance Gas
           Sensor using Finite Element Simulation

    • Authors: Aliza Aini Md Ralib, Nik Nursyahida Bt Nik Mohd Zamri, Ahmad Hafiz Faqruddin Hazadi, Rosminazuin Ab Rahim, Norfarahidah Za’bah, Norazlina Saidin
      Abstract: The increasing global trends in healthcare priorities towards improving the effectiveness of diagnostic procedure by utilizing a non-invasive method which is breath analysis. This will benefit in increasing treatment efficiency and also reducing healthcare costs. Breath is a simple technique where the sample are easily obtained and can be provided immediately. The most popular method that had been used in hospital are urine and blood. Contradict with breath, urine and blood take too much time to analyse the disease and a painful process. The detection technique of breath analysis is done by using electroacoustic wave sensor from piezoelectric substrate. This acoustic wave sensor has been used to detect the changes in the frequency where it will be used to detect the disease. Breath analysis is a technique where it uses an electronic nose (E-nose) as a device. E-nose consist of Quartz Crystal Microbalance (QCM) sensor in order to differentiate odor in human breath. QCM is a sensitive weighing device which have a high efficiency. AT-cut quartz was chosen as the piezoelectric material and aluminum as the electrode.  The objective of this paper is to design and simulate a QCM sensor for breath analysis application. Other than that, it also to determine the important key parameters that influence the performance of breath analysis which is sensitivity and resonant frequency. QCM sensor is being simulate by using COMSOL Multiphysics software. This is to evaluate the behavior of QCM sensor in terms of Eigen frequency analysis. The simulated QCM sensor with quartz radius of 166 um resonates at 8.871 MHz. The sensitivity of the sensor is 0.167 MHz/ng after exposed to acetone gas which act as the breath marker for detection of diseases in exhaled breath.Hence, the proposed design can be used as a non-invasive approach for early detection of disease through breath analysis.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Recyclable Waste Separation System Based on Material Classification using
           Weight and Size of Waste

    • Authors: Nur Shahida Midi, Muhammad Aizat Rahmad, Siti Hajar Yusoff, Sarah Yasmin Mohamad
      Abstract: Insufficient landfills problem had increased the needs to decrease the waste and recycling them. However, despite the efforts done by the government and local authorities on promoting recycling culture by introducing new laws and regulations, the awareness and willingness among the community is still low. One of the possible reasons to this is lack of effort to categorize the waste into the designated category which are paper, glass, plastic and metal. In order to address this problem, it is important to design a system that will ease the process of categorizing the waste. This can be achieve by the automation of the said process. In this work, a system consist of an algorithm and hardware to automatically categorize recyclable waste is proposed. The proposed system are utilizing weight sensor and ultrasonic sensors in order to capture the characteristics of the waste item, which are weight and size so that it can be categorized into paper, glass, plastic and metal. Here, a sytem to automatically separate household waste item is presented by combining an algorithm with a set of hardware consist of minimal number of sensors, conveyer belt and servor motors.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • MM-PNEMO: A Mathematical Model to Assess Handoff Delay and Packet Loss

    • Authors: Shayla Islam, Aisha Hassan Abdalla Hashim, Mohammad Kamrul Hasan, Md. Abdur Razzaque
      Abstract: Wireless networks incorporate Mobile Nodes (MNs) that use wireless access networks to communicate. However, the communication among these MNs are not remained stable due to the poor network coverage during inter mobility. Moreover, the wireless nodes are typically small that results in resource-constrained. Thus, it is uphill to use algorithms having giant processing power or memory footprint.  Accordingly, it is essential to check schemes consistently to evaluate the performance within the probable application scenario. To do so, numerical analysis could be a notable method to grasp the performance of mobility management schemes as well as the constraint of evolving mobility management solutions specifically for multi-interfaced MR in Proxy NEMO environment. This paper analyzes handoff performance by using a mathematical model of Multihoming-based scheme to support Mobility management in Proxy NEMO (MM-PNEMO) environment. Moreover, a comparative study has been made among the standard Network Mobility Basic Support Protocol (NEMO BSP), Proxy NEMO (PNEMO) and MM-PNEMO scheme respectively. The performance metrics estimated for these schemes are mainly handoff delay and packet loss. This paper also analysed the packet loss ratio and handoff gain as a function of cell radius, number of SMR and velocity respectively. It is apparent that, the MM-PNEMO scheme shows lower packet loss ratio (1%) compared to NEMO-BSP (11%) and P-NEMO (6%).
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Energy Efficient Smart Street Light for Smart City using Sensors and
           Controller

    • Authors: Aziera Abdullah, Siti Hajar Yusoff, Syasya Azra Zaini, Nur Shahida Midi, Sarah Yasmin Mohamad
      Abstract: Smart street light is an intelligent control of street lights to optimize the problem of power consumption of the street, late in night. Conventional street lights are being replaced by Light Emitting Diode (LED) street lighting system, which reduces the power consumption. The focus of this project is to design a system of street lights controller to provide a reduction in power consumption. The prototype was designed by using Light Dependent Resistor (LDR), Infrared sensor (IR), battery and LED. The brightness of the lamps is being controlled in this project to reduce the power consumption. The dimming of the lamps depends on the speed of object motion detected such as pedestrians, cyclists and cars. The higher speed of moving object, the greater the level of intensity. For this idea, the innovation of street lights is not quite the same as conventional street lights that are controlled by timer switch or light sensor which automatically turns light on during sunset and off during sunrise. According to the study, motion detection devices may help to save up to 40% of energy per month.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Stability Check of Doubly Fed Induction Generator (DFIG) Micro Grid Power
           System

    • Authors: Ameerul A. J. Jeman, Naeem M. S. Hannoon, Nabil Hidayat, Mohamed M. H. Adam, Ismail Musirin, Vijayakumar V.
      Abstract: As of late, expanding interest of renewable energy and consumption of non-renewable energy source have prompted developing advancement of renewable energy technology, for example, wind energy. Wind energy has turned out to be one of the reliable sources of renewable energy, which requests extra transmission capacity and better methods for sustaining system reliability. As of now, doubly fed induction generator wind turbine is the most well-known wind turbine. This paper focuses on DFIG wind farm design using MATLAB/SIMULINK and also investigates the issues of the system stability of the DFIG wind turbine micro grid power system. This analysis includes the changes of voltage, current, real power and reactive power based on various conditions of the power system.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Experimental Study on Transient response of Fuel Cell

    • Authors: Ameerul A. J. Jeman, Naeem M. S. Hannoon, Nabil Hidayat, Mohamed M. H. Adam, Ismail Musirin, Vijayakumar V.
      Abstract: 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.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Detection of Aedes Aegypti Larvae using Single Shot Multibox Detector with
           Transfer Learning

    • Authors: Mohd Ruddin AB Ghani, Rozaimi Ghazali, Tarmizi Ahmad Izzuddin, Mohamad Fani Sulaima, Zanariah Jano, Tole Sutikno
      Abstract: 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.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • A Game Theoretic Approach for Competition over Visibility in Social
           Networks

    • Authors: Khadija Touya, Mohamed Baslam, Rachid El Ayachi, Mostafa Jourhmane
      Abstract: Social Networks have known an important evolution in the last few years. These structures, made up of individuals who are tied by one or more specific types of interdependency, constitute the window for members to express their opinions and thoughts by sending posts to their own walls or others' timelines. Actually, when a content arrives, it's located on the top of the timeline pushing away older messages. This situation causes a permanent competition over visibility among subscribers who jump on opponents to promote conflict. Our study presents this competition as a non-cooperative game; each source has to choose frequencies which assure its visibility. We model it, exploring the theory of concave games, to reach a situation of equilibrium; a situation where no player has the ultimate ability to deviate from its current strategy. We formulate the named game, then we analyze it and prove that there is exactly one Nash equilibrium which is the convergence of all players' best responses. We finally provide some numerical results, taking into consideration a system of two sources with a specific frequency space, and analyze the effect of different parameters on sources' visibility on the walls of social networks.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Distributed Scheme To Authenticate Data Storage Security In Cloud
           Computing

    • Authors: B. Rakesh, K. Lalitha, C. Sushama, H. Parveen Sultana, O. Rajitha
      Abstract: 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.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Low Insertion Loss of Surface Mount Device Low Pass Filter at 700 MHz

    • Authors: Khairil Anuar Khairi, Mohd Faizal Jamlos, Surentiran Padmanathan, Mohd Aminudin Jamlos, Muammar Mohamad Isa
      Abstract: 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.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Analysis of Near-Infrared (NIR) Spectroscopy for Chlorophyll Prediction in
           Oil Palm Leaves

    • Authors: Mohd. Shafiq Amirul Sabri, R. Endut, C. B.M. Rashidi, A. R. Laili, S. A. Aljunid, N. Ali
      Abstract: Oil palm nutrient content is investigated with using chlorophyll as a representative factor correlated with NIR spectroscopy spectral absorbance. NIR spectroscopy method of sampling have been tested to overcome time consuming, complex chemical analysis procedure and invasive sampling method in order to identify chlorophyll content in an oil palm tree. Spectral absorbance data from range 900 nm to 1700 nm and chlorophyll data, then tested through five pre-processing methods which is Savitzky-Golay Smoothing (SGS), Multiplicative Scatter Correction (MSC), Single Normal Variation (SNV), First Derivative (1D) and also Second Derivative (2D) using Partial Least Square (PLS) regression prediction model to evaluate the correlation between both data. The overall results show, SGS has the best performance for preprocessing method with the results, the coefficient of determination (R2) values of 0.9998 and root mean square error (RMSE) values of 0.0639. In summary, correlation of NIR spectral absorbance data and chlorophyll can be achieved using a PLS regression model with SGS pre-processing technique. Thus, we can conclude that NIR spectroscopy method can be used to identify chlorophyll content in oil palm with using time saving, simple sampling and non-invasive method.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Self-switching Diodes as RF Rectifiers: Evaluation Methods and Current
           Progress

    • Authors: Nor Farhani Zakaria, Shahrir Rizal Kasjoo, Muammar Mohamad Isa, Zarimawaty Zailan, Mohd Khairuddin Md Arshad, Sanna Taking
      Abstract: In the advancement of the Internet of Things (IoT) applications, widespread uses and applications of devices require higher frequency connectivity to be explored and exploited. Furthermore, the size, weight, power and cost demands for the IoT ecosystems also creates a new paradigm for the hardware where improved power efficiency and efficient wireless transmission needed to be investigated and made feasible. As such, functional microwave detectors to detect and rectify the signals transmitted in higher frequency regions are crucial. This paper reviewed the practicability of self switching diodes as Radio Frequency (RF) rectifiers. The existing methods used in the evaluation of the rectification performance and cut-off frequency are reviewed, and current achievements are then concluded. The works reviewed in this paper highlights the functionality of SSD as a RF rectifier with design simplicity, which may offer cheaper alternatives in current high frequency rectifying devices for application in low-power devices.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • High Availability of Data using Automatic Selection Algorithm (ASA) in
           Distributed Stream Processing Systems

    • Authors: Sultan Alshamrani, Hesham Alhumyani, Quadri Waseem, Isbudeen Noor Mohamed
      Abstract: High Availability of data is one of the most critical requirements of a distributed stream processing systems (DSPS). We can achieve high availability using available recovering techniques, which include (active backup, passive backup and upstream backup). Each recovery technique has its own advantages and disadvantages. They are used for different type of failures based on the type and the nature of the failures. This paper presents an Automatic selection algorithm (ASA) which will help in selecting the best recovery techniques based on the type of failures. We intend to use together all different recovery approaches available (i.e., active standby, passive standby, and upstream standby) at nodes in a distributed stream-processing system (DSPS) based upon the system requirements and a failure type). By doing this, we will achieve all benefits of fastest recovery, precise recovery and a lower runtime overhead in a single solution. We evaluate our automatic selection algorithm (ASA) approach as an algorithm selector during the runtime of stream processing. Moreover, we also evaluated its efficiency in comparison with the time factor. The experimental results show that our approach is 95% efficient and fast than other conventional manual failure recovery approaches and is hence totally automatic in nature.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Hand Motion Pattern Recognition Analysis of Forearm Muscle using MMG
           Signals

    • Authors: M. R. Mohamad Ismail, C. K. Lam, K. Sundaraj, M. H. F. Rahiman
      Abstract: Surface Mechanomyography (MMG) is the recording of mechanical activity of muscle tissue. MMG measures the mechanical signal (vibration of muscle) that generated from the muscles during contraction or relaxation action. It is widely used in various fields such as medical diagnosis, rehabilitation purpose and engineering applications. The main purpose of this research is to identify the hand gesture movement via VMG sensor (TSD250A) and classify them using Linear Discriminant Analysis (LDA). There are four channels MMG signal placed into adjacent muscles which PL-FCU and ED-ECU. The features used to feed the classifier to determine accuracy are mean absolute value, standard deviation, variance and root mean square. Most of subjects gave similar range of MMG signal of extraction values because of the adjacent muscle. The average accuracy of LDA is approximately 87.50% for the eight subjects. The finding of the result shows, MMG signal of adjacent muscle can affect the classification accuracy of the classifier.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • An Efficient Algorithm for Monitoring Virtual Machines in Clouds

    • Authors: Sultan Alshamrani
      Abstract: Cloud computing systems consist of a pool of Virtual Machines (VMs), which are installed physically on the provider's set up. The main aim of the VMs is to offer the service to the end users. With the current increasing demand for the cloud VMs, there is always a huge requirement to secure the cloud systems. To keep these cloud systems secured, they need a continuous and a proper monitoring. For the purpose of monitoring, several algorithms are available with FVMs. FVM is a forensic virtual machine which monitors the threats among the VMs. Our formulated algorithm runs on FVM. In this paper, we formulate the Random-Start-Round-Robin algorithm for monitoring inside FVM.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Face Recognition Using Assemble of Low Frequency of DCT Features

    • Authors: Raja Abdullah Raja Ahmad, Muhammad Imran Ahmad, Mohd Nazrin Md Isa, Said Amirul Anwar
      Abstract: Face recognition is a challenge due to facial expression, direction, light, and scale variations. The system requires a suitable algorithm to perform recognition task in order to reduce the system complexity. This paper focuses on a development of a new local feature extraction in frequency domain to reduce dimension of feature space. In the propose method, assemble of DCT coefficients are used to extract important features and reduces the features vector. PCA is performed to further reduce feature dimension by using linear projection of original image. The proposed of assemble low frequency coefficients and features reduction method is able to increase discriminant power in low dimensional feature space. The classification is performed by using the Euclidean distance score between the projection of test and train images. The algorithm is implemented on DSP processor which has the same performance as PC based. The experiment is conducted using ORL standard face databases the best performance achieved by this method is 100%. The execution time to recognize 40 peoples is 0.3313 second when tested using DSP processor. The proposed method has a high degree of recognition accuracy and fast computational time when implemented in embedded platform such as DSP processor.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • A Efficacy of Different Buffer Size on Latency of Network on Chip (NoC)

    • Authors: F. W. Zulkefli, P. Ehkan, M. N. M. Warip, Ng. Yen. Phing
      Abstract: Moore's prediction has been used to set targets for research and development in semiconductor industry for years now. A burgeoning number of processing cores on a chip demand a competent and scalable communication architecture such as network-on-chip (NoC). NoC technology applies networking theory and methods to on-chip communication and brings noteworthy improvements over conventional bus and crossbar interconnections. Calculated performances such as latency, throughput, and bandwidth are characterized at design time to assured the performance of NoC. However, if communication pattern or parameters set like buffer size need to be altered, there might result in large area and power consumption or increased latency. Routers with large input buffers improve the efficiency of NoC communication while routers with small buffers reduce power consumption but result in high latency. This paper intention is to validate that size of buffer exert influence to NoC performance in several different network topologies. It is concluded that the way in which routers are interrelated or arranged affect NoC’s performance (latency) where different buffer sizes were adapted. That is why buffering requirements for different routers may vary based on their location in the network and the tasks assigned to them.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Flexible PVDF Thin Film as Piezoelectric Energy Harvester

    • Authors: Norfaizul Izwan Nordin, Rosminazuin Ab Rahim, Aliza Aini Md Ralib
      Abstract: This aim of this paper is to study the potential of Polyvinylidene Fluoride (PVDF) polymeric piezoelectric film as an energy harvester for daily application use. PVDF offers several advantages over other piezoelectric materials such as high chemical strength and stability, high piezoelectric properties and biocompatible. Several investigations were carried out in this project which comprises of simulation, functionality test and application test. For functionality test, the highest voltage produced for a single film PVDF is 0.368 V which charges up a capacitor to 0.219 V in one minute. The highest voltage produced by multiple PVDF films is 1.238 V by stacking 10 films of PVDF in parallel which charges up to 0.688 V in one minute. For application test, 5 pieces of PVDF films were attached to a glove to generate some voltage during fingers bending activity. The highest output voltage recorded is 0.184 V which stores 0.101 V in a capacitor after 200 times of hand bending and releasing. As a conclusion, PVDF has a good potential as an alternative energy for daily application use. Combination of PVDF energy harvester system with proper power optimization circuit will open up rooms of research opportunities in energy harvester system with promising prospect in self-powered wireless electronics devices for Internet-of-Things application.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Food Intake Gesture Monitoring System Based-On Depth Sensor

    • Authors: Muhammad Fuad bin Kassim, Mohd Norzali Haji Mohd
      Abstract: Food intake gesture technology is one of a new strategy for obesity people managing their health care while saving their time and money. This approach involves combining face and hand joint point for monitoring food intake of a user using Kinect Xbox One camera sensor. Rather than counting calories, scientists at Brigham Young University found dieters who eager to reduce their number of daily bites by 20 to 30 percent lost around two kilograms a month, regardless of what they ate [1]. Research studies showed that most of the methods used to count bite are worn type devices which has high false alarm ratio. Today trend is going toward the non-wearable device. This sensor is used to capture skeletal data of user while eating and train the data to capture the motion and movement while eating. There is specific joint to be capture such as Jaw face point and wrist roll joint. Overall accuracy is around 94%. Basically, this increase in the overall recognition rate of this system.Food intake gesture technology is one of a new strategy for obesity people managing their health care while saving their time and money. This approach involves combining face and hand joint point for monitoring food intake of a user using Kinect Xbox One camera sensor. Rather than counting calories, scientists at Brigham Young University found dieters who eager to reduce their number of daily bites by 20 to 30 percent lost around two kilograms a month, regardless of what they ate [1]. Research studies showed that most of the methods used to count bite are worn type devices which has high false alarm ratio. Today trend is going toward the non-wearable device. This sensor is used to capture skeletal data of user while eating and train the data to capture the motion and movement while eating. There is specific joint to be capture such as Jaw face point and wrist roll joint. Overall accuracy is around 94%. Basically, this increase in the overall recognition rate of this system.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • User’s Hand Effect on Efficiency of 2-port 5 GHz Mobile Terminal
           Antennas

    • Authors: Che Muhammad Nor Che Isa, Azremi Abdullah Al-Hadi, Saidatul Norlyana Azemi, Rizwan Khan
      Abstract: In this paper, the influence of user’s hand on mobile terminal antenna when it placed approximately on top of Multiple Input Multiple Output radiating element antennas (PIFAs) is studied extensively. The antenna is designed to operate at 5 GHz with 1.5 GHz of -6 dB bandwidth. The effect of user’s hand with different finger positions are studied at seven positions on slit at the ground plane, seven differences height above the antenna and nine different locations around the radiating element at 2 mm height from antenna. The losses due to presence of hand are studied in terms of scattering parameters, radiation efficiency and matching efficiency. The maximum loss in term of isolation in the presence of user’s hand is found at 6 mm on the slit and it decreased as the hand move away from the slitted area on the ground plane. The maximum efficiency loss is observed when the finger is placed right on top of the radiating element with -5.85 dB compare to antenna without the presence of user’s hand. On the other hand, the result for matching efficiency indicates approximately 0.2 dB losses occurred when the fingers are varied at different height and position.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Improved Wolf Algorithm on Document Images Detection Using Optimum Mean
           Technique

    • Authors: Wan Azani Mustafa, Mohamed Mydin M. Abdul Kader, Zahereel Ishwar Abdul Khalib
      Abstract: Detection text from handwriting in historical documents provides high-level features for the challenging problem of handwriting recognition. Such handwriting often contains noise, faint or incomplete strokes, strokes with gaps, and competing lines when embedded in a table or form, making it unsuitable for local line following algorithms or associated binarization schemes. In this paper, a proposed method based on the optimum threshold value and namely as the Optimum Mean method was presented. Besides, Wolf method unsuccessful in order to detect the thin text in the non-uniform input image. However, the proposed method was suggested to overcome the Wolf method problem by suggesting a maximum threshold value using optimum mean. Based on the calculation, the proposed method obtained a higher F-measure (74.53), PSNR (14.77) and lowest NRM (0.11) compared to the Wolf method. In conclusion, the proposed method successful and effective to solve the wolf problem by producing a high-quality output image.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Energy Efficient Anti-Collision Algorithm for the RFID Networks

    • Authors: Murukesan Loganathan, Thennarasan Sabapathy, Mohamed Elshaikh, Muzammil Jusoh, R. Badlishah Ahmad, Mohamed Nasrun Osman, Rosemizi Abd Rahim, Mohd Ilman Jais
      Abstract: Energy efficiency is crucial for radio frequency identification (RFID) systems as the readers are often battery operated. The main source of the energy wastage is the collision which happens when tags access the communication medium at the same time. Thus, an efficient anti-collision protocol could minimize the energy wastage and prolong the lifetime of the RFID systems. In this regard, EPCGlobal-Class1-Generation2 (EPC-C1G2) protocol is currently being used in the commercial RFID readers to provide fast tag identification through efficient collision arbitration using the Q algorithm. However, this protocol requires a lot of control message overheads for its operation. It is a known fact that the communication subsystem requires much higher energy consumption for its operation as compared to the computational subsystem. Therefore, a protocol with efficient collision arbitration capability and low control message overhead can be a suitable alternative for the commercial readers. In this regard, reinforcement learning based anti-collision protocol (RL-DFSA) is proposed to provide better time system efficiency while being energy efficient through the minimization of control message overheads. The proposed RL-DFSA was evaluated through extensive simulations and compared with the variants of EPC-Class 1 Generation 2 algorithms that are currently being used in the commercial readers. The results show conclusively that the proposed RL-DFSA performs identically to the very efficient EPC-C1G2 protocol in terms of time system efficiency but readily outperforms the compared protocol in the number of control message overhead required for the operation. In fact, RL-DFSA requires an order of magnitude lesser control message overheads as compared to the EPC-C1G2 protocol.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Performance evaluation of VLC system using new modulation approach

    • Authors: N. M. Nawawi, Anuar M. S., M. N. Junita, S. R. Abdullah
      Abstract: We propose a modified OFDM modulation based on multiband scheme for visible light communications (VLC) system. The method called catenated-OFDM VLC system can efficiently boost the propagation distance and combat multipath induced the inter symbol interference and inter carrier interference. Design parameters such as number of optical bands, input power, distance and data rate are varied to see their effect on the system performances. Simulation analysis is done using Optisys software Ver. 11.0. The results show that the proposed system offers a good performance at longer transmission distance of 12 m for input power of 2 dBm in case of Band = 3 with 10 Gbps data rate. BER curves also indicates that the proposed system can be operated at very high data rate of 15 Gbps. This exhibits the ability of the proposed system to be one of the candidate for future optical wireless communication system.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Bandwidth and Gain Enhancement of a Circular Microstrip Antenna using a
           DNG Split Ring Resonator Radome

    • Authors: Ojo Rasheed, Mohd Faizal Jamlos, Ping Jack Soh, Mohd Aminudin Jamlos, Muammar Mohamad Isa
      Abstract: This paper present the design of a circular patch microstrip antenna with enhancement in terms of bandwidth and gain using a dielectric double negative (DNG) split ring metamaterial radome. This radome is positioned on top of the CP antenna operating from 5.2 GHz to 6.4 GHz. The metamaterial radome comprises of two alternate split rings of negative permittivity, permeability and refractive index. The circular microstrip antenna bandwidth of 430 MHz has been realized by the presence of DNG metamaterial radome compared to 220 MHz without the radome. The gain has been increased as well from 1.84 dBi to 3.87 dBi.
      PubDate: 2019-06-01
      Issue No: Vol. 8 (2019)
       
  • Routing Performance of Structured Overlay in Distributed Hash Tables (DHT)
           for P2P

    • Authors: Rafiza Ruslan, Ayu Shaqirra Mohd Zailani, Nurul Hidayah Mohd Zukri, Nur Khairani Kamarudin, Shamsul Jamel Elias, R. Badlishah Ahmad
      Abstract: This paper presents a routing performance analysis of structured P2P overlay network. Due to the rapid development and hectic life, sharing data wirelessly is essential. P2P allows participating peers move freely by joining and leaving the network at any convenience time. Therefore, it exists constraint when one measuring the network performance. Moreover, the design of structured overlay networks is fragmented and with various design. P2P networks need to have a reliable routing protocol. In order to analyse the routing performance, this work simulates three structured overlay protocols – Chord, Pastry and Kademlia using OMNeT++ with INET and OverSim module. The result shows that Pastry is the best among others with 100% routing efficiency. However, Kademlia leads with 12.76% and 18.78% better than Chord and Pastry in lookup hop count and lookup success latency respectively. Hence, Pastry and Kamelia architectures will have a better choice for implementing structured overlay P2P network.
      PubDate: 2019-03-01
      Issue No: Vol. 8 (2019)
       
 
 
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