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Topic Review
Conceptual Challenges of Utilising PCMs in Concrete Industry
Most concrete employs organic phase change materials (PCMs), although there are different types available for more specialised use. Organic PCMs are the material of choice for concrete due to their greater heat of fusion and lower cost in comparison to other PCMs.
  • 377
  • 18 Sep 2023
Topic Review
Bioclimatic Retrofitting in Commercial Buildings
Buildings consume energy throughout their operational lifespan. The operational phase of a building’s life cycle plays a crucial role in energy consumption. Bioclimatic retrofitting affords a more human experience of a commercial building. Bioclimatic retrofitting promotes better natural ventilation and awareness of place, resulting in healthier internal environments and increasing overall business productivity. 
  • 349
  • 18 Sep 2023
Topic Review
Sensing Mobility and Routine Locations
The COVID-19 pandemic affected many aspects of human mobility and resulted in unprecedented changes in population dynamics, including lifestyle and mobility. Recognizing the effects of the pandemic is crucial to understand changes and mitigate negative impacts. Spatial data on human activity, including mobile phone data, has the potential to provide movement patterns and identify regularly visited locations. Moreover, crowdsourced geospatial information can explain and characterize the regularly visited locations. The analysis of both mobility and routine locations in the same study has seldom been carried out using mobile phone data and linked to the effects of the pandemic. 
  • 199
  • 18 Sep 2023
Topic Review
Models for Blind 360-Degree Image Quality Assessment
Image quality assessment of 360-degree images is still in its early stages, especially when it comes to solutions that rely on machine learning. There are many challenges to be addressed related to training strategies and model architecture.
  • 349
  • 18 Sep 2023
Topic Review
Robot Environment Perception for Navigation
Robot external and internal environment sensing by extraction of raw sensor data and their interpretation is the basic principle of robot perception. In the modular or end-to-end robot navigation approach, sensors play a critical role in capturing the environment or internal robot attributes for robot perception. A sensor modality represents a sensor that inputs a particular form of energy and processes the signal using similar methods. Modalities include raw input types for sensors like sound, pressure, light (infrared, visible), or magnetic fields. Robot perception sensor modalities commonly include cameras (infrared, RGB or depth), LiDAR, radar, sonar, GNSS, IMU, and odometry sensors.
  • 468
  • 18 Sep 2023
Topic Review
Life Cycle Thinking for a Circular Bioeconomy
The circular bioeconomy (CBE) is an increasingly popular method used to add value to bio-based products. However, these products entail impacts on sustainability that can be assessed by life cycle thinking (LCT). LCT is an approach to assess the impacts of products throughout their life cycles by using different tools, namely: (environmental) life cycle assessment (LCA), life cycle costing (LCC), social life cycle assessment (SLCA) and life cycle sustainability assessment (LCSA), which is a combination of the three and aims to assess the impacts of all of the three dimensions of sustainability.
  • 368
  • 18 Sep 2023
Topic Review
Modelling Freight Last Mile
The transport of freight involves numerous intermediate steps, such as freight consolidation, truck allocation, and routing, all of which exhibit high day-to-day variability. On the delivery side, drivers usually cover specific geographic regions, also known as clusters, to optimise operational efficiency. A crucial aspect of this process is the effective allocation of resources to match business requirements. The discrete-event simulation (DES) technique excels in replicating intricate real-world operations and can integrate a multitude of stochastic variables, thereby enhancing its utility for decision making. 
  • 242
  • 18 Sep 2023
Topic Review
Common Techniques for Biolubricant Production
Lubricants can be classified according to their physical state as solid, liquid, or semi-fluid (greases). The former is used when it is difficult to maintain contact with the fluid, while the latter is used in situations where liquid lubricants are not applicable. According to the UNE-EN 16807 standard, the term “bio” is considered synonymous with good for the environment. Its use in lubricants is linked to its environmental properties; therefore, it is expected that all compounds called bio-lubricants will degrade in the environment. 
  • 1.4K
  • 18 Sep 2023
Topic Review
Biogas Steam Reforming in Wastewater Treatment Plants
Hydrogen as an energy vector is going to play an important role in the global energy mix. On the other hand, wastewater management has become a worldwide concern, as urban settlements have been considerably increasing for decades. Consequently, biodigestion to produce biogas (rich in methane) in water treatment plants could be an interesting starting point to obtain a valuable gas that can be converted into hydrogen through steam reforming. 
  • 417
  • 15 Sep 2023
Topic Review
Forward and Reverse Combustion
In situ combustion or fire flooding is a promising enhanced oil recovery (EOR) technique designed to produce heavy oils and bitumen. This method involves the in-place heating and combustion of hydrocarbons, resulting in reduced viscosity and increased mobility for improved flow toward the production wellbore. Despite its potential, widespread commercial implementation of in situ combustion has been hindered due to technical and economic challenges like inadequate project design and improper reservoir selection.
  • 476
  • 15 Sep 2023
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