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Topic Review
Fog-Based IoT Platform Performance Modeling and Optimization
A fog-based IoT platform model involving three layers, i.e., IoT devices, fog nodes, and the cloud, was proposed using an open Jackson network with feedback. The system performance was analyzed for individual subsystems, and the overall system was based on different input parameters. Interesting performance metrics were derived from analytical results. A resource optimization problem was developed and solved to determine the optimal service rates at individual fog nodes under some constraint conditions.
  • 449
  • 19 Jun 2023
Topic Review
Airport Service Quality and Overall Satisfaction
The novel coronavirus (COVID-19) outbreak has impacted the aviation industry worldwide. Several restrictions and regulations have been implemented to prevent the virus’s spread and maintain airport operations. To recover the trustworthiness of air travelers in the new normality, improving airport service quality (ASQ) is necessary, ultimately increasing passenger satisfaction in airports.
  • 1.1K
  • 19 Jun 2023
Topic Review
Classification of Electric Vehicles
EVs have the ability to run solely on electric propulsion or in conjunction with an internal combustion engine (ICE). The simplest sort of EV relies just on batteries as its source of energy; however, there are many variants that make use of a variety of other types of energy sources. These automobiles are hybrid electric models (HEVs). The Technical Committee 69 Electric Road Vehicles (ERV) of the International Electrical Technical Commission proposes that vehicles with two or more forms of energy source, storage, or converters can be classified as HEVs as long as at least one of them provides electrical energy.
  • 1.9K
  • 19 Jun 2023
Topic Review
Electrocatalytic CO2 Reduction to Formate and Formic acid
The electrocatalytic CO2 reduction reaction (CO2RR) to formic acid has gained significant attention as a potential environmentally friendly approach to reducing CO2 emissions and producing carbon-neutral liquid fuels. However, several challenges must be addressed to achieve the production of high-purity and high-concentration formic acid through CO2RR. One major challenge is the formation of a formate mixture instead of pure formic acid in conventional reactors. This requires costly downstream purification and concentration processes to obtain pure formic acid. 
  • 496
  • 19 Jun 2023
Topic Review
Real-World Driver Stress Recognition and Diagnosis
Mental stress is known as a prime factor in road crashes. The devastation of these crashes often results in damage to humans, vehicles, and infrastructure. Likewise, persistent mental stress could lead to the development of mental, cardiovascular, and abdominal disorders. Preceding research in this domain mostly focuses on feature engineering and conventional machine learning approaches.
  • 418
  • 19 Jun 2023
Topic Review
Rapidly Exploring Random Tree for a Dual Manipulator
The search efficiency of a rapidly exploring random tree (RRT) can be improved by introducing a high-probability goal bias strategy. In the case of multiple complex obstacles, the high-probability goal bias strategy with a fixed step size will fall into a local optimum, which reduces search efficiency.
  • 398
  • 19 Jun 2023
Topic Review
Wire Arc Additive Manufacturing Process
Wire arc additive manufacturing (WAAM) is an emerging and promising technology for producing medium-to-large-scale metallic components/structures for different industries, i.e., aerospace, automotive, shipbuilding, etc. It is now a feasible alternative to traditional manufacturing processes due to its shorter lead time, low material waste, and cost effectiveness. WAAM has been widely used to produce components using different materials, including copper-based alloy wires, in the past decades. 
  • 1.2K
  • 19 Jun 2023
Topic Review
Investigating Viroc's Compression Behavior and Mechanical Properties
To meet energy-saving requirements, in recent years, Saudi Arabia’s construction industry has focused on researching the use of naturally available resources as raw materials.
  • 292
  • 19 Jun 2023
Topic Review
Mechanism of Photovoltaic Potential Induced Degradation
Photovoltaic (PV) technology plays a crucial role in the transition towards a low-carbon energy system, but the potential-induced degradation (PID) phenomenon can significantly impact the performance and lifespan of PV modules. PID occurs when a high voltage potential difference exists between the module and ground, leading to ion migration and the formation of conductive paths. This results in reduced power output and poses a challenge for PV systems. 
  • 269
  • 16 Jun 2023
Topic Review
Microalgae Biomass and Biochemical Conversion
Among the available renewable resources, microalgae biomass, a third-generation feedstock, is promising for energy production due to its rich biochemical composition, metabolic elasticity, and ability to produce numerous bioenergy products, including biomethane, biohydrogen, and bioethanol.
  • 326
  • 16 Jun 2023
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