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Topic Review
Semi-Supervised Image Stitching from Unstructured Camera Arrays
Image stitching involves combining multiple images of the same scene captured from different viewpoints into a single image with an expanded field of view. While this technique has various applications in computer vision, traditional methods rely on the successive stitching of image pairs taken from multiple cameras. While this approach is effective for organized camera arrays, it can pose challenges for unstructured ones, especially when handling scene overlaps.
  • 300
  • 14 Dec 2023
Topic Review
Constrained Inverse Kinematics of Minimally Invasive Surgical Robots
Minimally invasive surgery has undergone significant advancements, transforming various surgical procedures by minimizing patient trauma, postoperative pain, and recovery time. However, the use of robotic systems in minimally invasive surgery introduces significant challenges related to the control of the robot’s motion and the accuracy of its movements. In particular, the inverse kinematics (IK) problem is critical for robot-assisted minimally invasive surgery (RMIS), where satisfying the remote center of motion (RCM) constraint is essential to prevent tissue damage at the incision point. 
  • 116
  • 14 Dec 2023
Topic Review
Fully Autonomous Active Self-Powered Point-of-Care Devices
Quick and effective point-of-care (POC) devices have the chance to revolutionize healthcare in developed and developing countries since they can operate anywhere the patient is, with the possibility of obtaining and sending the results to the doctor without delay. Significant efforts have focused on developing new POC systems that can screen for biomarkers continuously and non-invasively in body fluids to prevent, diagnose, and manage diseases. However, one of the critical challenges left to address is how to power them effectively and sufficiently. In developing countries and rural and remote areas, where there are usually no well-established electricity grids or nearby medical facilities, and using batteries is unreliable or not cost-effective, alternative power sources are the most challenging issue for stand-alone and self-sustained POC devices.
  • 151
  • 13 Dec 2023
Topic Review
Recycling and Reuse ECOSYSTEM
Daikin Europe N.V. (DENV), Daikin Central Europe (DACE), the National Technical University of Athens (NTUA) and the Society for Materials and Energy Applications (MAT4NRG GmbH) are the four partners of the consortium behind the Retradeables project that receives EU funding. The key objective of the ongoing project is to realise the first circular economy ecosystem to strongly promote the efficient management of used gases, offering sustainability and accountability to the HVAC-R industry and reducing environmental pollution stemming from F-gas emissions. This is exactly the mission of the so-called “3R ECOSYSTEM” that is currently under development to bring total innovation to the HVAC-R industry, adding value to used refrigerants that will be treated as an asset instead of a waste to be destroyed.
  • 216
  • 13 Dec 2023
Topic Review
Ceramic Waste as a Precursor in Alkali-Activated Cements
Concrete and ceramic products are among the most widely used materials in the construction sector. Ceramic waste (CW) can be successfully employed as a precursor in alkali-activated (AA) cements, particularly in the context of prefabricated products where thermal curing is a prevalent procedure. When enhanced mechanical strength is requisite, it is feasible to attain improvements by employing hybrid systems or by combining CW with other precursors, such as blast furnace slag.
  • 154
  • 13 Dec 2023
Topic Review
High-Purity Quartz Processing Technology
Quartz deposits are widely dispersed in nature, but the presence of ore bodies capable of yielding high-purity quartz is exceedingly rare. As a result, the effective purification and processing of high-purity quartz from natural siliceous materials has emerged as a prominent area of research within the non-metallic mineral processing field.
  • 763
  • 12 Dec 2023
Topic Review
Progress of Dispersants for Coal Water Slurry
This article provides a comprehensive review of existing coal water slurry dispersants, and points out the existing problems and possible future development directions.
  • 269
  • 12 Dec 2023
Topic Review
Residual Stresses in Cold Expansion and Fatigue Life
Cold expansion technology has been widely used in aviation industries as an effective method of improving the fatigue performance of fastener holes. It can improve the fatigue life several times over without adding weight, meeting the growing demand for lightweight and durable aircraft structures. In recent years, it has been extensively studied through extensive experiments and finite element simulations to analyze the residual stresses around the fastener hole. Appropriate process parameters lead to the generation of beneficial residual stresses that influence the material microstructure, thereby improving the fatigue life of the component.
  • 157
  • 12 Dec 2023
Topic Review
Sustainability of the Metaverse
The sustainability of the metaverse is driven by the recent advancement of Industry 5.0 technology, which places the human at the center of processes, leveraging human creativity and ingenuity alongside advanced technologies along with respecting human rights and individual dignity as well as promoting equitable and inclusive workplaces.
  • 199
  • 12 Dec 2023
Topic Review
Cooling Methods for Standard and Floating PV Panels
Energy and water poverty are two main challenges of the modern world. Most developing and underdeveloped countries need more efficient electricity-producing sources to overcome the problem of potable water evaporation. At the same time, the traditional way to produce energy/electricity is also responsible for polluting the environment and damaging the ecosystem. Notably, many techniques have been used around the globe, such as a photovoltaic (PV) cooling (active, passive, and combined) process to reduce the working temperature of the PV panels (up to 60 °C) to improve the system efficiency. For floating photovoltaic (FPV), water cooling is mainly responsible for reducing the panel temperature to enhance the production capacity of the PV panels, while the system efficiency can increase up to around 30%. 
  • 316
  • 12 Dec 2023
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