College of Engineering: Recent submissions
Now showing items 921-940 of 8340
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Indoor Multi-Lingual Scene Text Database with Different Views
( Institute of Electrical and Electronics Engineers Inc. , 2023 , Conference Paper)This paper introduces a database of multi-script (Arabic and English) for indoor scene text detection, taken from different angle-of-view. This database can be used in a variety of real-world applications, such as image ... -
Lightweight Multi-Class Support Vector Machine-Based Medical Diagnosis System with Privacy Preservation
( Multidisciplinary Digital Publishing Institute (MDPI) , 2023 , Article)Machine learning, powered by cloud servers, has found application in medical diagnosis, enhancing the capabilities of smart healthcare services. Research literature demonstrates that the support vector machine (SVM) ... -
Collaborative Byzantine Resilient Federated Learning
( Institute of Electrical and Electronics Engineers Inc. , 2023 , Article)Federated learning (FL) enables an effective and private distributed learning process. However, it is vulnerable against several types of attacks, such as Byzantine behaviors. The first purpose of this work is to demonstrate ... -
Efficient and Privacy-Preserving Cloud-Based Medical Diagnosis Using an Ensemble Classifier With Inherent Access Control and Micro-Payment
( Institute of Electrical and Electronics Engineers Inc. , 2023 , Article)Decision tree (DT) models are widely used in medical applications where the size of the data sets is usually small or medium. Moreover, DT ensemble models are preferred over single DT models because of their higher accuracy ... -
Influence of temperature on tire-pavement noise in hot climates: Qatar case
( Elsevier , 2021 , Article)The ambient air temperature greatly influences tire-pavement noise measurements. Therefore, various international standards recommended a temperature correction factor to compensate for noise measurements at varying ... -
Acoustic Performance Evaluation of Dense-Graded Asphalt Pavements in Qatar
( Hindawi , 2021 , Article)There is pressing and growing demand from the public to design and construct roads with a low noise level. This paper investigated the acoustic performance of asphalt pavements in the State of Qatar to assist transport ... -
Rheological, Thermal, and Chemical Evaluation of Asphalt Binders Modified Using Crumb Rubber and Warm-Mix Additive
( American Society of Civil Engineers (ASCE) , 2022 , Article)This study evaluates the potential of producing warm-mix asphalt (WMA) using a wax-based additive (Sasobit) in a binder modified using crumb rubber (CR). This binder is formulated for very hot climates and has a grade of ... -
Comparative Characterization of Field and Laboratory-Aged Binders Modified with Antioxidant Additives and Copolymers Using Fourier Transform Infrared Spectroscopy and Gel Permeation Chromatography
( American Society of Civil Engineers (ASCE) , 2022 , Article)This study investigates the behavior of antioxidant additives and copolymers to an asphalt binder by comparing laboratory-aged (up to 60 h) and antioxidant-modified binders with binders extracted from field cores. To ... -
Assessment of Pavement Performance Management Indicators Through Analytic Network Process
( Institute of Electrical and Electronics Engineers Inc. (IEEE) , 2022 , Article)Pavement industry is very critical for any public authority looking after the safety and comfort of its citizens because it is the backbone of many transportation networks. Studying the factors that affect the pavement ... -
Review on sustainable production of biochar through hydrothermal liquefaction: Physico-chemical properties and applications
( Elsevier Ltd , 2020 , Other)This review examines in detail the production and characteristics of biochar resulting from hydrothermal liquefaction. Specifically, the impact of feedstocks and different process parameters on the properties and yield of ... -
Nitrogen-fixing cyanobacteria as a potential resource for efficient biodiesel production
( Elsevier Ltd , 2020 , Article)The incessant utilization of non-renewable energy sources persistently pollutes the earth's atmosphere and thus requires the immediate substitution by renewable energy sources such as biofuel. In this study, several ... -
Various potential techniques to reduce the water footprint of microalgal biomass production for biofuel—A review
( Elsevier B.V. , 2020 , Other)Due to their rapid growth rates, high lipid productivity, and ability to synthesize value-added products, microalgae are considered as the potential biofuel feedstocks. However, among the several bottlenecks that are ... -
Catalytic hydrothermal liquefaction of biomass into bio-oils and other value-added products – A review
( Elsevier Ltd , 2021 , Article)Hydrothermal liquefaction (HTL) is an effective method for the conversion of biomass into biofuel involving moderate temperature and high pressure. However, the yield and quality of bio-oil are not sufficient for ... -
Optimized intake manifold designs and their effects on the operation and emissions of a gas-to-liquid diesel engine
( American Society of Mechanical Engineers (ASME) , 2020 , Conference Paper)Two simultaneous strategies have been used in this work to reduce the diesel engine emissions. First, using novel manifold designs to generate strong turbulence and improve the fuel-air mixing inside the cylinder. The ... -
Scalar dissipation rate statistics in turbulent flows using Planar Laser Induced Fluorescence measurements
( Elsevier , 2012 , Article)A shearless mixing layer with isotropic decaying turbulence has been examined with a turbulent axisymmetric opposed-jet flow and a plume in pipe flow. The study has been carried out experimentally with Planar Laser Induced ... -
The probabilistic nature of ignition of turbulent highly-strained lean premixed methane-air flames for low-emission engines
( Elsevier , 2014 , Article)The probabilistic nature of ignition of turbulent highly-strained lean premixed flames has been investigated. Two flow configurations have been considered in this study; counter-flow and bluff-body flames. Different ... -
Autoignition of n-heptane in a turbulent co-flowing jet
( Elsevier , 2015 , Article)N-heptane autoignition in turbulent co-flowing jets with preheated air is studied using the one-dimensional turbulence (ODT) model. The simulations are designed to investigate the effects of molecular and turbulent transports ... -
Measurements of laminar flame speeds of alternative gaseous fuel mixtures
( American Society of Mechanical Engineers (ASME) , 2015 , Article)Global warming and the ever increasing emission levels of combustion engines have forced the engine manufacturers to look for alternative fuels for high engine performance and low emissions. Gaseous fuel mixtures such as ... -
Turbulence effects on the autoignition of DME in a turbulent co-flowing jet
( Elsevier , 2017 , Article)Dimethyl ether (DME) autoignition in turbulent co-flowing jets with preheated air is studied using the one-dimensional turbulence (ODT) model. We investigate the effects of molecular and turbulent transport on the autoignition ... -
Investigating the effect of the air inlet temperature on the combustion characteristics of a spark ignition engine fueled by biogas
( Wiley-Blackwell , 2020 , Article)This work has conducted a numerical study using AVL-Boost engine simulation utilizing biogas (CH4 and CO2)–air mixtures in a SI engine model. The effect of varying the air manifold temperature from 25 to 50°C on the ...