Electrical Engineering: Recent submissions
Now showing items 1021-1040 of 2649
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Metal nanowire-graphene composite transparent electrodes
( SPIE , 2014 , Conference Paper)Silver nanowires with 40 nm diameter and copper nanowires with 150 nm diameter were synthesized using low-temperature routes, and deposited in combination with ultrathin graphene sheets for use as transparent conductors. ... -
Evaluation of FSO link throughput in Qatar
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)Despite the vibrant advantages of Free Space Optics (FSO) technology and the variety of its applications, its widespread adoption has been hampered by rather disappointing link reliability for long-range links due to ... -
Outage performance of multi-hop hybrid FSO/RF communication systems
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)In this paper, five scenarios are considered for the realization of a multi-hop hybrid free-space optical/radio frequency (FSO/RF) communication system with decode-and-forward (DF) relaying, and analytical outage probability ... -
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 ... -
Feasibility of air quality monitoring systems based on environmental energy harvesting
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)Capillary wireless sensor networks dedicated to air quality monitoring have provided essential information on hazardous air condition, generating early warnings to prevent danger situation for human health. The arising ... -
Embedded gateway services for Internet of Things applications in ubiquitous healthcare
( Institute of Electrical and Electronics Engineers Inc. , 2014 , Conference Paper)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 ... -
Ultrahigh Aspect Ratio Copper-Nanowire-Based Hybrid Transparent Conductive Electrodes with PEDOT:PSS and Reduced Graphene Oxide Exhibiting Reduced Surface Roughness and Improved Stability
( American Chemical Society , 2015 , Article)Copper nanowires (CuNWs) with ultrahigh aspect ratio are synthesized with a solution process and spray-coated onto select substrates to fabricate transparent conductive electrodes (TCEs). Different annealing methods are ... -
Environmentally powered multiparametric wireless sensor node for air quality diagnostic
( M Y U Scientific Publishing Division , 2015 , Article)Sensor networks dedicated to environmental monitoring have helped in the analysis of primal processes and have also provided vital hazard early warnings. At the same time, environmental energy is now becoming a popular ... -
Real-time DWT-based compression for wearable Electrocardiogram monitoring system
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)Compression of Electrocardiogram signal is important for digital Holters recording, signal archiving, transmission over communication channels and Telemedicine. This paper introduces an effective real-time compression ... -
Sol-gel deposition and plasma treatment of intrinsic, aluminum-doped and gallium-doped zinc oxide thin films as transparent conductive electrodes
( SPIE , 2015 , Conference Paper)Zinc oxide and aluminum/gallium-doped zinc oxide thin films were deposited via sol-gel spin-coating technique. Employing plasma treatment as alternative to post thermal annealing, we found that the morphologies of these ... -
Long-term performance analysis and power prediction of PV technology in the State of Qatar
( Elsevier Ltd , 2017 , Article)?Solar photovoltaic (PV) energy in GCC?- the term seems convincing to many solar PV industries due to high solar exposure in GCC region. However, long-term effects such as dust accumulation and seasonal variation are major ... -
An experimental performance evaluation of the hybrid FSO/RF
( SPIE , 2017 , Conference Paper)This paper is a first attempt to study the effects of atmospheric turbulences on hybrid free space optics/ radio frequency (FSO/RF) transmission system in Doha, Qatar. The state of Qatar is characterized by a Mediterranean ... -
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, ... -
n-InAs based photo-thermo-electrochemical cells for conversion of solar to electrical energy
( Elsevier B.V. , 2016 , Article)This paper presents the photo-thermo-electrochemical (PEC) response of various combinations of the n-type indium arsenide (n-InAs) photo-electrode with different counter electrodes, i.e., Ag, Al, Cu, Pb, Zn and ITO. The ... -
Binary blend based dye sensitized photo sensor using PCPDTBT and MEH-PPV composite as a light sensitizer
( Elsevier Ltd , 2015 , Article)In this research, we present a binary blend of two polymers, i.e., namely, poly[2,6-(4,4-bis-(2-ethylhexyl)-4H-cyclopenta [2,1-b;3,4-b′]dithiophene)-alt-4,7(2,1,3-benzothiadiazole)] (PCPDTBT) and poly[2-methoxy-5-(2-ethy ... -
Study of a ternary blend system for bulk heterojunction thin film solar cells
( Institute of Physics Publishing , 2016 , Article)In this research, we report a bulk heterojunction (BHJ) solar cell consisting of a ternary blend system. Poly(3-hexylthiophene) P3HT is used as a donor and [6,6]-phenyl C61-butyric acid methylester (PCBM) plays the role ... -
Indoor test of the fog's effect on FSO link
( SPIE , 2017 , Conference Paper)In order to distinguish the most rigorous model, we made a comparison between measurements data and the mostly used empirical models. These models use the visibility as a basic parameter to predict the fog attenuation. In ... -
Structural health monitoring installation scheme using utility computing model
( Institute of Electrical and Electronics Engineers Inc. , 2018 , Conference Paper)In view of intensified disasters and fatalities caused by natural phenomena, there is a pressing need for an efficient environment logging that provides structural information to administrators for a better management and ... -
Multihop transmission strategy using dijkstra algorithm to improve energy efficiency in WSNs
( Springer Verlag , 2018 , Conference Paper)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 Paper)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 ...
