Electrical Engineering: Recent submissions
Now showing items 1161-1180 of 2811
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Time-frequency analysis of heart rate variability in neonatal piglets exposed to hypoxia
(2011 , Conference)To determine whether the sympathetic nervous system plays any role in the inter-individual variation of cardiovascular response to hypoxia in newborns, neonatal heart rate variability (HRV) analysis was used to assess ... -
An efficient algorithm for instantaneous frequency estimation of nonstationary multicomponent signals in low SNR
(2011 , Article)A method for components instantaneous frequency (IF) estimation of multicomponent signals in low signal-to-noise ratio (SNR) is proposed. The method combines a new proposed modification of a blind source separation (BSS) ... -
Calibration of time features and frequency features in the time-frequency domain for improved detection and classification of seizure in newborn EEG signals
( IEEE Computer Society , 2012 , Conference)This paper presents new time-frequency features for seizure detection in newborn EEG signals. These features are obtained by calibrating relevant time features and frequency features in the joint time-frequency domain. The ... -
Generalised phase synchrony within multivariate signals: An emerging concept in time-frequency analysis
(2012 , Conference)This paper introduces the notion of the instantaneous frequency (IF) based generalized phase synchrony in time-frequency analysis based on the concept of cointegration. This phase synchrony is then quantified by investigating ... -
Secure Communications Using Directional Modulation
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference)Limitations on the wireless communication resources (i.e., time and frequency) introduces the need for another domain that can help communication systems to match the increasing demand on high data transfer rates and quality ... -
Q-Learning Based Closed-Loop Control of Anesthesia Administration by Accounting for Hemodynamic Parameter Variations
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference)Critically ill patients in the intensive care units (ICUs) are often in acutely disturbed state of mind characterized by restlessness, illusions, and nervousness. Such patients, for instance, those who are mechanically ... -
Robust Controller and Fault Diagnoser Design for Linear Systems with Event-based Communication
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference)In order to improve the effectiveness and safety of control systems, the problem of integrated fault diagnosis and control (IFDC) design has attracted significant attention in the recent years, both in the research and in ... -
Multihop transmission strategy using dijkstra algorithm to improve energy efficiency in WSNs
( Springer Verlag , 2018 , Conference)Thanks to the development in the wireless communication technologies and the microelectronics domain, Wireless Sensor Networks (WSNs) are more and more omnipresent. The most important challenge of WSN is how to extend its ... -
Development of prototype for IoT and IoE scalable infrastructures, architectures and platforms
( Springer Verlag , 2018 , Conference)IoT is the third wave of economy after the first and second being agriculture and industry, respectively, paving the way for the fourth industrial revolution (4IR). IoT is a combination of all the revolutionary technologies ... -
A BHJ-thin-film/liquid-electrolyte based electrochemical-sensor for visible light-detection
( Royal Society of Chemistry , 2017 , Article)The current study presents a new type of inexpensive and very sensitive bulk heterojunction (BHJ) organic photo-sensor (OPS) configuration that incorporates a layer of liquid electrolyte into the conventional BHJ photodiode ... -
A simple method for extracting the parameters of the PV cell single-diode model
( Elsevier Ltd , 2017 , Article)This paper aims to simplify the parameters' extraction for the solar cell single diode model and to show that there are many solutions. The proposed algorithm considers many pairs of ideality factor and series resistance. ... -
Optimization of ITO glass/TiO2 based DSSC photo-anodes through electrophoretic deposition and sintering techniques
( Elsevier Ltd , 2017 , Article)In the current study, TiO2 layers were deposited onto Indium Tin Oxide (ITO) coated glass substrates at varied voltage levels ranging from 2.5 VDC to 7.5 VDC, using Electrophoretic deposition (EPD) process. Subsequently, ... -
Prospects and challenges of free space optical communications
( Springer Verlag , 2018 , Conference)Free space optical (FSO) transmission is a technology which uses a narrow laser beam to transmit the signal from the source to the destination through the free space. Although it has various advantages, a laser beam ... -
Atmospheric turbulence effect on hybrid FSO/RF systems
( IEEE Computer Society , 2017 , Conference)This article is focused on the atmospheric turbulence attenuation and their effect on the hybrid free space optical and radio frequency (FSO/RF) under Qatar harsh and dry climate. Analysis has been done by calculating the ... -
High-Performance BiCMOS Transimpedance Amplifiers for Fiber-Optic Receivers
( Sultan Qaboos University , 2017 , Article)High gain, wide bandwidth, low noise, and low-power transimpedance amplifiers based on new BiCMOS common- base topologies have been designed for fiber-optic receivers. In particular a design approach, hereafter called "A ... -
Development of innovative indoor/outdoor air quality monitoring for environmental impact assessment in the State of Qatar
( WITPress , 2014 , Article)Air pollution is one of the most crucial factors affecting the quality of life and health of increasingly urban populations; a country with a fast-growing economy based on hydrocarbons such as Qatar is no exception. In ... -
Renewable energy-harvested sensor systems for air quality monitoring
( Institute of Electrical and Electronics Engineers Inc. , 2014 , Conference)Wireless sensor networks (WSNs) devoted to environmental monitoring has preponderantly assumed the adoption of a portable and limited energy source, (e.g. lithium, alkaline, NiMH batteries), to support the sensor ... -
Embedded gateway services for Internet of Things applications in ubiquitous healthcare
( Institute of Electrical and Electronics Engineers Inc. , 2014 , Conference)The continuous advancement in computer and communication technologies has made personalized healthcare monitoring a rapidly growing area of interest. New features and services are envisaged, raising users' expectations in ... -
Transparent conducting electrodes based on thin, ultra-long Copper nanowires and graphene nano-composites
( SPIE , 2014 , Conference)High aspect-ratio ultra-long (> 70 ?m) and thin (< 50 nm) copper nanowires (Cu-NW) were synthesized in large quantities using a solution-based approach. The nanowires, along with reduced graphene-oxide sheets, were coated ... -
Highly transparent low sheet resistance electrodes for solar cell applications
( Institute of Electrical and Electronics Engineers Inc. , 2014 , Conference)High aspect ratio copper nanowires were synthesized, using a solution-based approach. The nanowires along with reduced graphene oxide thin films were sprayed onto glass and flexible substrates and later annealed in order ...
