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New Parallel N-Input Voting for Large Scale Fault-Tolerant Control Systems
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作者 Abbas Karimi Faraneh Zarafshan +1 位作者 Adznan B.Jantan S.A.R.Al-Haddad 《Journal of Electronic Science and Technology》 CAS 2011年第2期174-179,共6页
Average (mean) voter is one of the commonest voting methods suitable for decision making in highly-available and long-missions applications where the availability and the speed of the system are critical.In this pap... Average (mean) voter is one of the commonest voting methods suitable for decision making in highly-available and long-missions applications where the availability and the speed of the system are critical.In this paper,a new generation of average voter based on parallel algorithms and parallel random access machine(PRAM) structure are proposed.The analysis shows that this algorithm is optimal due to its improved time complexity,speed-up,and efficiency and is especially appropriate for applications where the size of input space is large. 展开更多
关键词 Divide and conquer FAULT-TOLERANT parallel algorithm voting algorithm.
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Experimental Study of Breast Cancer Detection Using UWB Imaging
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作者 Saleh A. Alshehri Adznan B. Jantan 《通讯和计算机(中英文版)》 2011年第8期680-685,共6页
关键词 UWB信号 乳腺癌 检测 实验 成像 肿瘤组织 离散余弦变换 脂肪组织
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Tapered optical fiber DNA biosensor for detecting Leptospira DNA
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作者 Jia-Yong Lam Mohd Hanif Yaacob Hui-Yee Chee 《Asian Pacific Journal of Tropical Medicine》 SCIE CAS 2023年第3期119-128,共10页
Objective: To establish a DNA detection platform based on a tapered optical fiber to detect Leptospira DNA by targeting the leptospiral secY gene.Methods: The biosensor works on the principle of light propagating in t... Objective: To establish a DNA detection platform based on a tapered optical fiber to detect Leptospira DNA by targeting the leptospiral secY gene.Methods: The biosensor works on the principle of light propagating in the special geometry of the optical fiber tapered from a waist diameter of 125 to 12 μm. The fiber surface was functionalized through a cascade of chemical treatments and the immobilization of a DNA capture probe targeting the secY gene. The presence of the target DNA was determined from the wavelength shift in the optical transmission spectrum.Results: The biosensor demonstrated good sensitivity, detecting Leptospira DNA at 0.001 ng/μL, and was selective for Leptospira DNA without cross-reactivity with non-leptospiral microorganisms. The biosensor specifically detected DNA that was specifically amplified through the loop-mediated isothermal amplification approach.Conclusions: These findings warrant the potential of this platform to be developed as a novel alternative approach to diagnose leptospirosis. 展开更多
关键词 DNA biosensor Tapered optical fiber LEPTOSPIROSIS LEPTOSPIRA
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Optimal Resource Allocation for NOMA Wireless Networks
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作者 Fahad R.Albogamy M.A.Aiyashi +2 位作者 Fazirul Hisyam Hashim Imran Khan Bong Jun Choi 《Computers, Materials & Continua》 SCIE EI 2023年第2期3249-3261,共13页
The non-orthogonal multiple access(NOMA)method is a novel multiple access technique that aims to increase spectral efficiency(SE)and accommodate enormous user accesses.Multi-user signals are superimposed and transmitt... The non-orthogonal multiple access(NOMA)method is a novel multiple access technique that aims to increase spectral efficiency(SE)and accommodate enormous user accesses.Multi-user signals are superimposed and transmitted in the power domain at the transmitting end by actively implementing controllable interference information,and multi-user detection algorithms,such as successive interference cancellation(SIC),are performed at the receiving end to demodulate the necessary user signals.Although its basic signal waveform,like LTE baseline,could be based on orthogonal frequency division multiple access(OFDMA)or discrete Fourier transform(DFT)-spread OFDM,NOMA superimposes numerous users in the power domain.In contrast to the orthogonal transmission method,the nonorthogonal method can achieve higher spectrum utilization.However,it will increase the complexity of its receiver.Different power allocation techniques will have a direct impact on the system’s throughput.As a result,in order to boost the system capacity,an efficient power allocation mechanism must be investigated.This research developed an efficient technique based on conjugate gradient to solve the problem of downlink power distribution.The major goal is to maximize the users’maximum weighted sum rate.The suggested algorithm’s most notable feature is that it converges to the global optimal solution.When compared to existing methods,simulation results reveal that the suggested technique has a better power allocation capability. 展开更多
关键词 Non-orthogonalmultiple access wireless networks power domain 5G networks
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In situ aberration measurement technique based on multi-illumination settings and principal component analysis of aerial images 被引量:2
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作者 A.W.Al-Alimi A.F.Abas +2 位作者 M.A.Mahdi M.H.Al-Mansoori M.Mokhtar 《Chinese Optics Letters》 SCIE EI CAS CSCD 2012年第12期35-38,共4页
A multiwavelength Brillouin/erbium fiber laser (BEFL) with low threshold power is realized. A low threshold power of 3 mW and a wide tuning range of 18 nm can be achieved by controlling the reflected power in the no... A multiwavelength Brillouin/erbium fiber laser (BEFL) with low threshold power is realized. A low threshold power of 3 mW and a wide tuning range of 18 nm can be achieved by controlling the reflected power in the nonlinear optical loop mirror (NOLM). Up to 24 lines with a wavelength spacing of 0,086 nm are generated at the Brillouin pump and at the 1 480-nm pump with -0.5 dBm (0.9 roW) and 25 mW of power, respectively. 展开更多
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A Highly Efficient Algorithm for Phased-Array mmWave Massive MIMO Beamforming
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作者 Ayman Abdulhadi Althuwayb Fazirulhisyam Hashim +5 位作者 Jiun Terng Liew Imran Khan Jeong Woo Lee Emmanuel Ampoma Affum Abdeldjalil Ouahabi Sébastien Jacques 《Computers, Materials & Continua》 SCIE EI 2021年第10期679-694,共16页
With the rapid development of the mobile internet and the internet of things(IoT),the fifth generation(5G)mobile communication system is seeing explosive growth in data traffic.In addition,low-frequency spectrum resou... With the rapid development of the mobile internet and the internet of things(IoT),the fifth generation(5G)mobile communication system is seeing explosive growth in data traffic.In addition,low-frequency spectrum resources are becoming increasingly scarce and there is now an urgent need to switch to higher frequency bands.Millimeter wave(mmWave)technology has several outstanding features—it is one of the most well-known 5G technologies and has the capacity to fulfil many of the requirements of future wireless networks.Importantly,it has an abundant resource spectrum,which can significantly increase the communication rate of a mobile communication system.As such,it is now considered a key technology for future mobile communications.MmWave communication technology also has a more open network architecture;it can deliver varied services and be applied in many scenarios.By contrast,traditional,all-digital precoding systems have the drawbacks of high computational complexity and higher power consumption.This paper examines the implementation of a new hybrid precoding system that significantly reduces both calculational complexity and energy consumption.The primary idea is to generate several sub-channels with equal gain by dividing the channel by the geometric mean decomposition(GMD).In this process,the objective function of the spectral efficiency is derived,then the basic tracking principle and least square(LS)techniques are deployed to design the proposed hybrid precoding.Simulation results show that the proposed algorithm significantly improves system performance and reduces computational complexity by more than 45%compared to traditional algorithms. 展开更多
关键词 5G mmWave phased array ALGORITHM antenna beamforming
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Feature Reduction Effect on UWB Imaging for Breast Tumor Detection
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作者 Saleh A. Alshehri Sabira Khatun +3 位作者 Adznan B. Jantan RSA Raja Abdullah Rozi Mahmud Zaiki Awang 《通讯和计算机(中英文版)》 2011年第8期636-644,共9页
关键词 肿瘤检测 乳腺癌 超宽带 UWB信号 生物医学应用 减排 成像 神经网络
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Performance Evaluation of a Bilayer SPR-Based Fiber Optic RI Sensor With TiO2 Using FDTD Solutions 被引量:2
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作者 Yusser AL-QAZWINI A. S. M. NOOR +3 位作者 T. K. YADAV M. H. YAACOB S. W. HARUN M. A. MAHDI 《Photonic Sensors》 SCIE EI CAS 2014年第4期289-294,共6页
We proposed a new bilayer surface plasmon resonance-based fiber-optic refractive index sensor with silver and an over-layer of TiO2. We numerically investigated the optimal thickness of TiO2 over-layer in the proposed... We proposed a new bilayer surface plasmon resonance-based fiber-optic refractive index sensor with silver and an over-layer of TiO2. We numerically investigated the optimal thickness of TiO2 over-layer in the proposed sensor and compared its performance to that based on typical bimetallic layers of silver-and-gold in the aqueous media using finite-difference time domain approach. We show that the use of TiO2 over-layer greatly improves the sensor performance in terms of sensitivity and signal-to-noise ratio compared to that with gold as the over-layer. Not only does the TiO2 over-layer offer a cost-effective alternative to gold for overcoming the oxidation problem, but also it allows resonance wavelength-tunability. 展开更多
关键词 BILAYER surface plasmon resonance (SPR) fiber optic sensor refractive index (RI) finite-differencetime domain (FDTD)
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Capacitive sensor probe to assess frying oil degradation 被引量:1
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作者 Alfadhl Yahya Khaled Samsuzana Abd Aziz Fakhrul Zaman Rokhani 《Information Processing in Agriculture》 EI 2015年第2期142-148,共7页
The repeated usage of frying oil has been proven hazardous due to the degradation process by chemical reactions that lead to changes in the quality of the oil.Currently,the degree of frying oil degradation is indicate... The repeated usage of frying oil has been proven hazardous due to the degradation process by chemical reactions that lead to changes in the quality of the oil.Currently,the degree of frying oil degradation is indicated by the percentage of its total polar compounds(TPC).In this study,a capacitive sensor was designed to assess frying oil degradation at several heating time intervals by measuring changes on its electrical capacitance.The sensor was designed using interdigitated electrode structure.A total of 30 samples of 130 ml palm oil were heated at 180℃ up to 30 h.For each one hour interval,one sample was moved out from the laboratory oven.The electrical capacitance,total polar compound(TPC)and viscosity of the samples were measured for analysis.Preliminary results demonstrated significant correlation between oil electrical capacitance with TPC and viscosity with R^2 ranged from 0.83 to 0.90.The designed sensor has good potential for simple and inexpensive way of determining frying oil quality. 展开更多
关键词 Capacitance sensor Frying oil quality HEATING
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