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Nonlinear Dynamics of Flexible Rotors Supported on Journal Bearings—Part II: Numerical Bearing Model
(American Society of Mechanical Engineers, 2018)The nonlinear stability of a flexible rotor-bearing system supported on finite length journal bearings is addressed. A perturbation method of the Reynolds lubrication equation is presented to calculate the bearing nonlinear ... -
Nonlinear Dynamics of Flexible Rotors Supported on Journal Bearings—Part I: Analytical Bearing Model
(American Society of Mechanical Engineers, 2018)To determine the bifurcation types in a rotor-bearing system, it is required to find higher order derivatives of the bearing forces with respect to journal velocity and position. As closed-form expressions for journal ... -
The study of operating an air conditioning system using Maisotsenko-Cycle
(IOP Publishing, 2018)The project aims to design and build an air conditioning system that runs on the Maisotsenko cycle. The system is required to condition and cool down ambient air for a small residential space with the reduction in the use ... -
Οικονομική κρίση και κοινωνική συνοχή. Μελέτη 12 Ο.Τ. στο Βόλο.
(Ianos, 2019-03)Οι ακάλυπτοι χώροι των Ελληνικών πόλεων δεν αποτελούν μόνο υπολείμματα του πολύτιμου αστικού ελεύθερου χώρου, αλλά μαζί με τα οικοδομικά τετράγωνα που τους περιβάλλουν αντικατοπτρίζουν τις μεταβολές της αστικής συνθήκης ... -
Durability and Strength of Sustainable Self-Consolidating Concrete Containing Fly Ash
(IOP Science, 2018)In this paper, the durability and strength of self-consolidating concrete (SCC) is assessed through development and testing of six binary mixes at fixed water-to-binder (w/b) ratio of 0.36. In each of the six SCC mixes, a ... -
Automated design and optimization of industrial motion control machines: Verification and a case-study
(IOP Publishing, 2018)Motion control is a form of automation which enables the position- or velocity-control of a machine using an actuator such as an electric motor. The selection of suitable components and actuators for complex mechanical ... -
Durability and Compressive Strength of High Cement Replacement Ratio Self-Consolidating Concrete
(MDPI, 2018)This study examines durability and mechanical properties of sustainable self-consolidating concrete (SCC) in which 80% of the cement is replaced with combinations of recycled industrial by-products including fly ash, ... -
A critical review on seismic design of earth-retaining structures
(Jordan University of Science and Technology, 2019)The dynamic response of earth-retaining structures is a complex issue. The design of these structures under seismic loading conditions is, therefore, quite challenging. Because there are not many case histories on ... -
Assessment of progressive collapse of steel structures under seismic loads
(Elsevier, 2018)Progressive collapse involves a series of failures that lead to partial or total collapse of a structure. It is generally initiated by loss of one or more vertical load carrying elements. This loss is caused by abnormal ... -
The impact of computer-generated interactive mathematics program on student’s performance
(IAEME Publication, 2018)This paper describes the impact of using MyMathLab (MML) in math courses for engineering students. In this paper, we focused on the effect of proper use of one of the component of MML the Study Plan on student’s performance. ... -
Measuring the sway of imperceptible factors in shaping the distinct character of ancient Indian architecture and city planning
(Mason Publishing,, 2018)In India, great obey to nature is evident in architecture, and the essence of life is fairly apparent in city planning. Human kind reflects his perception of life in architecture by locating the spaces within the dwelling ... -
Experimental Study on the Effects of Water-in-oil Emulsions to Wall Shear Stress in the Pipeline Flow
(Ebsco, 2018)Study on the emulsion formation mechanically and relate the effect of emulsions to the friction or wall shear stress ( w ) in the pipeline flow has not yet been explored. So, this study aims to understand the emulsions ... -
State of the art, reconstruction of damaged zones: transitory stresses effect and factors controlling rock mass stability
(GEOMATE, 2018)For the last three decades, many countries in the Middle East have been bombarded by wars. In these damaged zones, removing of destruction debris and the effect of the direct impact of blasts might trigger rock mass ... -
Rationale for “Liking” on Social Networking Sites
(Sage Publication, 2018)The “like” feature is popularly utilized by online social media users for different reasons including socializing, giving feedback and giving or seeking attention as well as for pure affection. The “like” function is a ... -
Application of nanomaterials to enhance microstructure and mechanical properties of concrete
(SPC, 2018)The advances of sustainable construction and the green building movement of the past decade have encouraged comprehensive assessment of building materials and construction practices worldwide. With superior fire resistance, ... -
Implementation of Artificial Neural Networks for Prediction of Chloride Penetration in Concrete
(Science Publishing Corporation, 2018)Artificial Neural Networks (ANN) has received a great attention from researchers in previous decade to predict different aspect of engineering problems. The aim of this research is to present an implementation of ANN to ... -
A Novel Global Warming Solution: Use of Flue Gas to Produce Urea
(EDP Sciences, 2018)Urea is a nitrogenous organic compound which is widely used as a fertilizer and in the agricultural industry. On an industrial scale, urea can be manufactured from the reaction of carbon dioxide and ammonia. The goal of ... -
Investigating the Potential Use of Ionic Liquids in Pre-Treatment Application for Water Desalination
(EDP Sciences, 2018)The world has been noticing a quickening advancement over the last decades in terms of irrigated agriculture, social, industrial, and economical perspectives; followed by a huge increment in the water demand. Therefore, ... -
Numerical modelling of dynamic stability of RCC dam
(EDP Sciences, 2018-08)Stability and stress analyses are the most important elements that require rigorous consideration in design of a dam structure. In the current research, dynamic structural stability of a roller-compacted-concrete (RCC) dam ... -
Predictions of the frequencies of bending-torsion coupled laminated composite plates with discontinuities: Novel analytical modeling and experimental validation
(Elsevier, 2017-11)A novel analytical model that accurately represents the free vibration response of intact/damaged composite plates accounting for the bending-torsional coupling is developed. Unlike the existing models for the bending-torsion ... -
Level sets-based image segmentation approach using statistical shape priors
(Elsevier, 2019)A robust 3-D segmentation technique incorporated with the level sets concept and based on both shape and intensity constraints is introduced. A partial differential equation (PDE) is derived to describe the evolution of ... -
Mode localization phenomenon in microbeams due to surface roughness
(2018-03)This is the first study on the mode localization phenomenon in microbeams due to surface roughness. A new model for microbeams with rough surfaces is developed. The natural frequencies and mode shapes of cantilever, ... -
Poisson's ratio effects on the mechanics of auxetic nanobeams
(Elsevier Masson, 2018-07)Poisson’s ratio is an important mechanical property that reveals the deformation patterns of materials. A positive Poisson’s ratio is a feature of the majority of materials. Some materials, however, display “auxetic” behaviors ... -
A reduced micromorphic model for multiscale materials and its applications in wave propagation
(Elsevier, 2018-10)In this study, a reduced micromorphic model for multiscale materials is developed. In the context of this model, multiscale materials are modeled with deformable microstructures. The deformation energy is formed depending ... -
Free vibration analysis of cantilever open-hole composite plates
(Springer Netherlands, 2017-09)The free vibration behavior of quasi-isotropic carbon fiber laminated composite plates containing circular holes with free-clamped boundary conditions are numerically, analytically, and experimentally investigated. Finite ... -
Stability analysis of fluid film bearings under laminar and turbulent regimes
(IOP Publishing, 2018)Stability of short journal bearings is investigated in bith the linear and nonlinear regimes under laminar and turbulent operating conditions with consideration of drag force effects. Exerted forces on fluid film bearings ... -
Effects of surface integrity on the mechanics of ultra-thin films
(Pergamon, 2018-04)A detailed formulation for the effects of the surface integrity, i.e. surface topography, surface metallurgy, and surface mechanical properties, on the mechanics of ultra-thin films is proposed in the framework of linear ... -
Predicting Operating Speeds at Urban Multilane Roundabouts in Abu Dhabi, United Arab Emirates
(Hindwai, 2018)There are more than 460 multilane roundabouts located in Abu Dhabi, the capital city of the United Arab Emirates, and its surrounding areas. Most of those roundabouts have three entry/circulatory/exit lanes with large ... -
Pull-in instability of multi-phase nanocrystalline silicon beams under distributed electrostatic force
(Pergamon, 2015-05)The effects of the material structure on the pull-in instability of nano-actuated beams made of nanocrystalline silicon (Nc–Si) and subjected to a distributed electrostatic force are investigated. Nc–Si is represented ... -
Nonlinear-electrostatic analysis of micro-actuated beams based on couple stress and surface elasticity theories
(Pergamon, 2014-07)In this paper, a size-dependent electrostatic model for cantilever micro-actuated beams is investigated considering the microstructure and surface energy effects. The modified couple stress theory is used to capture the ... -
Finite Element Analysis of the Deformation of Functionally Graded Plates under Thermomechanical Loads
(Hindawi, 2013)The first-order shear deformation plate model, accounting for the exact neutral plane position, is exploited to investigate the uncoupled thermomechanical behavior of functionally graded (FG) plates. Functionally graded ... -
A first-order shear deformation finite element model for elastostatic analysis of laminated composite plates and the equivalent functionally graded plates
(Elsevier, 2011-03)In the present paper, the first-order shear deformation plate (FSDT) model is exploited to investigate the mechanical behavior of laminated composite and functional graded plates. Three approaches are developed to transform ... -
Using random-parameter and fixed-parameter ordered models to explore temporal stability in factors affecting drivers ' injury severity in single-vehicle collisions
(Elsevier, 2018)Understanding the temporal stability in the factors influencing drivers’ injury severity in single-vehicle collisions would help evaluating the effectiveness of implementing different safety treatments so that researchers ... -
Modeling of mechanical resonators used for nanocrystalline materials characterization and disease diagnosis of HIVs
(Springer, 2016)The modeling and performance of mechanical resonators used for mass detection of bio-cells, nanocrystalline materials characterization, and disease diagnosis of human immune-viruses (HIVs) are investigated. To simulate the ... -
Identifying Personalized Autism Related Impairments Using Resting Functional MRI and ADOS Reports
(Springer, 2018)In this study, a personalized computer aided diagnosis system for autism spectrum disorder is introduced. The proposed system uses resting state functional MRI data to build local classifiers, global classifier, and correlate ... -
Modeling of series-connected photovoltaic cells
(IEEE, 2018)This paper proposes a new model for series-connected photovoltaic (PV) cells, using a modified one-diode equivalent-circuit model. The PV modules comprise many series-connected cells to generate more electrical power. This ... -
Design and simulation of solar grid-connected charger for electric vehicles
(IEEE, 2018)Electric Vehicles (EV) are playing major role in decreasing carbon emissions. The major problem so far with the Electric Vehicles are overloading the Distribution Grids and availability of enough charging stations. The ... -
Are garden cities in the desert sustainable? The oasis city of al ain in the Emirate of Abu Dhabi
(SPSD Press, 2018)The United Arab Emirates (UAE) has embarked on an ambitious plan of nation-building transforming the landscape of the country. Whereas Abu Dhabi and Dubai with their modern architecture promote an international urban ... -
Bayesian Analysis of Air Emission Violations from Waste Incineration and Coincineration Plants
(Willey On line library, 2018)Waste incineration and coincineration plants in most European countries have frequently updated their flue gas cleaning systems, surpassing in most cases E.U. air emission standards. At the same time, in most developing ... -
Risks and threats of desalination in the Arabian Gulf
(IOP Publishing, 2018)Desalination constitutes the sole long-term reliable and sustainable source of fresh water for the desert Arabian Gulf Region. The region is facing unprecedented growth with continuous population increase and economies ... -
Water resource management towards a sustainable water budget in the United Arab Emirates
(IOP Publishing, 2019)Water in the United Arab Emirates (UAE) is scarce and in addition to its life-sustaining role it is a limiting economic resource for the country. The current article presents a comprehensive study of the water resources ... -
The new central business district in Abu Dhabi; high-rise buildings and sandstorms
(IOP Publishing, 2019)The new Central Business District (CBD) of Abu Dhabi to be constructed in its desert hinterland is planned as part of the 2030 vision to reflect the image of a global city, and to attract investors through creating a ... -
Building on Water: The Use of Satellite Images to Track Urban Changes and Hydrodynamic Models to Simulate Flow Patterns Around Artificial Islands
(Springer, 2019)Dubai’s interest to attract investors through exclusive urban enclaves is best exemplified by the artificial islands that reshaped much of its shoreline. Several artificial islands such as Palm Jumeirah, Palm Jebel Ali and ... -
Integrating Hydrodynamic Models and Satellite Images to Implement Erosion Control Measures and Track Changes Along Streambanks
(Springer, 2019)Dike structures are used to restore the original bankline by redirecting the flow away from the banks towards the center of the stream. 2D-hydrodynamic models integrated with satellite images proved to be a powerful tool ... -
International Museums and Transcultural Impact on Gulf States: The Louvre Abu Dhabi as a Case Study
(Springer, 2018)The study of emerging contemporary museums in the United Arab Emirates suggests that new forms of architecture are emerging that deal with the past and present at the same time. The opening of the Louvre Abu Dhabi in 2017 ... -
A Distributed inVANETs-Based Intersection Traffic Control Algorithm
(Springer, 2019)Recently, smart traffic control at intersections became an important issue which has resulted in many researchers investigating intelligent transportation systems using smart vehicles. In particular, the traditional traffic ... -
A Citywide Distributed in VANETs-Based Protocol for Managing Traffic
(Springer, 2019)he dawn of wireless communications makes the delivery of real time information at hands. This includes Vehicle to Infrastructure (V2I) and the Vehicle to Vehicle (V2V) communications which opened the doors for superior ... -
DoS attacks and countermeasures in VANETs
(2019)Vehicular Ad Hoc Networks (VANETs) are ideal target to many attacks due to the large number of vehicles communicating with each other continually and instantly through a wireless medium. The main goal of VANETs is to enhance ... -
Sybil attacks in intelligent vehicular ad hoc networks: A review
(Springer, 2018)Vehicular Ad-hoc Networks (VANETs) are intelligent transportation system that provides wireless communication between vehicles and different objects in the road to increase human safety. Many security techniques have been ... -
Deep Learning-Based Intrusion Detection Systems for Intelligent Vehicular Ad Hoc Networks
(Springer, 2019)In recent years, malware classifies as a big threat for both internet and computing devices that directly related with the in-vehicle networking security purpose. The main perspective of this paper is to study use of ...
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