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السجلات المعروضة 1 -- 20 من 157
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4-port MIMO antenna with defected ground structure for 5G millimeter wave applications
( MDPI AG , 2020 , Article)We present a 4-port Multiple-Input-Multiple-Output (MIMO) antenna array operating in the mm-wave band for 5G applications. An identical two-element array excited by the feed network based on a T-junction power combiner/divider ... -
A case study to identify the hindrances to widespread adoption of electric vehicles in qatar
( MDPI AG , 2020 , Article)The adoption of electric vehicles (EVs) have proven to be a crucial factor to decreasing the emission of greenhouse gases (GHG) into the atmosphere. However, there are various hurdles that impede people from purchasing ... -
A combined method to model dynamic recrystallization based on cellular automaton and a phenomenological (CAP) approach
( MDPI AG , 2018 , Article)Titanium alloys with high stacking-fault energy show continuous dynamic recrystallization (CDRX) instead of discontinuous dynamic recrystallization (DDRX) during high-temperature deformation. During the CDRX mechanism, new ... -
A comparison of neighborhood-scale interventions to alleviate urban heat in Doha, Qatar
( MDPI AG , 2019 , Article)Recent evidence suggests that many densely populated areas of the world will be uninhabitable in the coming century due to the depletion of resources, climate change, and increasing urbanization. This poses serious questions ... -
A comprehensive review of the cyber-attacks and cyber-security on load frequency control of power systems
( MDPI AG , 2020 , Article Review)Power systems are complex systems that have great importance to socio-economic development due to the fact that the entire world relies on the electric network power supply for day-to-day life. Therefore, for the stable ... -
A fog computing solution for context-based privacy leakage detection for android healthcare devices
( MDPI AG , 2019 , Article)Intelligent medical service system integrates wireless internet of things (WIoT), including medical sensors, wireless communications, and middleware techniques, so as to collect and analyze patients' data to examine their ... -
A holistic overview of Qatar's (Built) cultural heritage; Towards an integrated sustainable conservation strategy
( MDPI AG , 2019 , Article)Historic urban cores are the backbone of a city's cultural identity. Maintaining and preserving the socio-cultural, environmental and economic characteristics of the built heritage is vital for cultural identity survival. ... -
A hybrid nf-fo-ro process for the supply of irrigation water from treated wastewater: Simulation study
( MDPI AG , 2021 , Article)Municipal treated wastewater could be considered as a water source for food crop irrigation purposes. Enhancing the quality of treated wastewater to meet irrigation standards has become a necessary practice. Nanofiltration ... -
A modular approach for a patient unit for extracorporeal membrane oxygenation simulator
( MDPI AG , 2021 , Article)Despite many advancements in extracorporeal membrane oxygenation (ECMO), the procedure is still correlated with a high risk of patient complications. Simulation-based training provides the opportunity for ECMO staff to ... -
A modular IoT platform for real-time indoor air quality monitoring
( MDPI AG , 2018 , Article)The impact of air quality on health and on life comfort is well established. In many societies, vulnerable elderly and young populations spend most of their time indoors. Therefore, indoor air quality monitoring (IAQM) is ... -
A new insight in determining the percolation threshold of electrical conductivity for extrinsically conducting polymer composites through different sigmoidal models
( MDPI AG , 2017 , Article)The electrical conductivity of extrinsically conducting polymer composite systems passes through a transition state known as percolation threshold. A discussion has been made on how different Sigmoidal models (S-models), ... -
A novel sensorless control for multiphase induction motor drives based on singularly perturbed sliding mode observer-experimental validation
( MDPI AG , 2020 , Article)This paper aims to develop an innovative sensorless control approach for a five-phase induction motor (IM) drive. The operation principle of the sensorless scheme is based on the sliding mode theory, within which a sliding ... -
A path walkability assessment index model for evaluating and facilitating retail walking using decision-tree-making (DTM) method
( MDPI AG , 2018 , Article)Transportation is the major contributor of ever-increasing CO2 and Greenhouse Gas emissions in cities. The ever-increasing hazardous emissions of transportation and energy consumption have persuaded transportation and urban ... -
A planar ultrawideband patch antenna array for microwave breast tumor detection
( MDPI AG , 2020 , Article)In this paper, a compact planar ultrawideband (UWB) antenna and an antenna array setup for microwave breast imaging are presented. The proposed antenna is constructed with a slotted semicircular-shaped patch and partial ... -
A privacy-preserving traffic monitoring scheme via vehicular crowdsourcing
( MDPI AG , 2019 , Article)The explosive number of vehicles has given rise to a series of traffic problems, such as traffic congestion, road safety, and fuel waste. Collecting vehicles’ speed information is an effective way to monitor the traffic ... -
A prospective concept on the fabrication of blend pes/peg/dmf/nmp mixed matrix membranes with functionalised carbon nanotubes for co2/n2 separation
( MDPI AG , 2021 , Article Review)With an ever-increasing global population, the combustion of fossil fuels has risen immensely to meet the demand for electricity, resulting in significant increase in carbon dioxide (CO2 ) emissions. In recent years, CO2 ... -
A real-time early warning seismic event detection algorithm using smart geo-spatial bi-axial inclinometer nodes for Industry 4.0 applications
( MDPI AG , 2019 , Article)Earthquakes are one of the major natural calamities as well as a prime subject of interest for seismologists, state agencies, and ground motion instrumentation scientists. The real-time data analysis of multi-sensor ... -
A review of fouling mechanisms, control strategies and real-time fouling monitoring techniques in forward osmosis
( MDPI AG , 2019 , Article Review)Forward osmosis has gained tremendous attention in the field of desalination and wastewater treatment. However, membrane fouling is an inevitable issue. Membrane fouling leads to flux decline, can cause operational problems ... -
A review on the corrosion behaviour of nanocoatings on metallic substrates
( MDPI AG , 2019 , Article)Growth in nanocoatings technology is moving towards implementing nanocoatings in many sectors of the industry due to their excellent abilities. Nanocoatings offer numerous advantages, including surface hardness, adhesive ... -
A self-selective correlation ship tracking method for smart ocean systems
( MDPI AG , 2019 , Article)In recent years, with the development of the marine industry, the ship navigation environment has become more complicated. Some artificial intelligence technologies, such as computer vision, can recognize, track and count ...