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Topic Review
Gravity Concentration Techniques in Urban Mining Applications
Urban mining has emerged as a concept that goes beyond conventional recycling, as it aims to tackle both the challenges of solid waste generation and management, as well as the scarcity of primary resources. Gravity concentration has gained increasing attention as a promising method for addressing crucial challenges in urban mining applications. Gravity concentration has a long history, dating back to ancient times. During this time, numerous methods have been developed, and for each method, various equipment has been manufactured and commercialized. Therefore, categorizing gravity concentration techniques is not an easy task, and it ultimately depends on the criteria that one relies upon. Such criteria may include whether the operation is dry or wet, the capacity of the equipment, the typical efficiency (the efficiency of gravity concentration equipment can be evaluated using the partition or Tromp curve method. In this, the separation is assessed by examining the fraction of material in each density fraction that ends up in the product, and how this relates to the original fraction present in the feed. More details can be found in mineral processing textbooks), the process target (yield or content), the costs involved, and others. Of these criteria, the operating size range is the most critical factor that should be considered when selecting appropriate gravity concentration techniques for a given application.
  • 643
  • 08 Nov 2023
Topic Review
Power Sources for Unmanned Aerial Vehicles
An unmanned aerial vehicle (UAV), also referred to as a flying robot or drone, possesses the ability to operate independently or under remote control for specific missions. In recent times, UAVs have garnered considerable attention as a result of advancements in microprocessors and artificial intelligence (AI), sensors, and the design and manufacturing process, facilitating the creation of intelligent UAVs. The term “intelligent UAVs” refers to these drones’ capacity to operate autonomously or semi-autonomously, making real-time decisions based on data from their sensors and AI algorithms. These intelligent UAVs can adapt to changing environments, navigate with precision, and perform tasks with a level of autonomy that was once reserved for science fiction. Moreover, the UAV wireless charging system represents a significant departure from conventional cable-based charging methods. 
  • 637
  • 08 Nov 2023
Topic Review
Anti-Drift Technology of Plant Protection Machinery
In orchard plant protection application, an anti-drift strategy can effectively reduce drift in the non-target area, reduce spray drift in the environment, and avoid spray leakage and overspraying. 
  • 313
  • 07 Nov 2023
Topic Review
Vehicle-to-Grid Techniques
Vehicle-to-grid (V2G) technology has received a lot of attention as a smart interconnection solution between electric vehicles and the grid.
  • 434
  • 07 Nov 2023
Topic Review
Deep-Learning-Based Cooperative Spectrum Sensing
With the rapid development in wireless communication and 5G networks, the rapid growth in mobile users has been accompanied by an increasing demand for the electromagnetic spectrum. The birth of cognitive radio and its spectrum-sensing technology provides hope for solving the problem of low utilization of the wireless spectrum.
  • 320
  • 07 Nov 2023
Topic Review
Classification Methods for Prognostics
Prognostics and health management is an engineering discipline that aims to support system operation while ensuring maximum safety and performance. Prognostics is a key step of this framework, focusing on developing effective maintenance policies based on predictive methods. Traditionally, prognostics models forecast the degradation process using regression techniques that approximate a mapping function from input to continuous remaining useful life estimates. These models are typically of high complexity and low interpretability.
  • 198
  • 07 Nov 2023
Topic Review
Smart Street Light Control
A smart streetlight (SSL) is defined as a LED-equipped lighting system that can monitor and control lighting based on environmental conditions. It is part of a network-based system, capable of sending and receiving data, and features sensors and actuators for various functions like traffic and light sensing, environmental monitoring, and more.
  • 1.0K
  • 07 Nov 2023
Topic Review
The Implementation of Precise Point Positioning
High-precision positioning from Global Navigation Satellite Systems (GNSS) has garnered increased interest due to growing demand in various applications, like autonomous car navigation and precision agriculture. Precise Point Positioning (PPP) offers a distinct advantage over differential techniques by enabling precise position determination of a GNSS rover receiver through the use of external corrections sourced from either the Internet or dedicated correction satellites. However, PPP’s implementation has been challenging due to the need to mitigate numerous GNSS error sources, many of which are eliminated in differential techniques such as Real-Time Kinematics (RTK) or overlooked in Standard Point Positioning (SPP).
  • 234
  • 07 Nov 2023
Topic Review
Explainable Approaches for Forecasting Building Electricity Consumption
Building electric energy is characterized by a significant increase in its uses (e.g., vehicle charging), a rapidly declining cost of all related data collection, and a proliferation of smart grid concepts, including diverse and flexible electricity pricing schemes. Not surprisingly, an increased number of approaches have been proposed for its modeling and forecasting.
  • 247
  • 06 Nov 2023
Topic Review
COVID-19 Lockdown on Online Car-Hailing Travel in Shanghai
Due to the restriction policies and people’s fear of contracting COVID-19, the riding of means of transportation decreased sharply, including trains, metros, taxis, and online car-hailing, both for inter-city and intra-city transportation modes. The way people travel and live was significantly affected. People needed to work from home or conduct online meetings if the working conditions permitted. Students needed to take classes online.
  • 240
  • 06 Nov 2023
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