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Topic Review
Biography
Topic Review
Geometry and Semantic-Based Dynamic SLAM
Simultaneous localization and mapping (SLAM) is a crucial technology for advanced robotics applications, enabling collision-free navigation and environment exploration. In terms of the localization aspect of SLAM, the accuracy of pose estimation is greatly affected by the proportion of dynamic feature points being tracked in the field of view.
288
14 Aug 2023
Topic Review
Imaging Principle of the Light Field Camera
A light field camera has the benefit of being compact and reconstructing the 3D shape of the surface with just one shot. At the same time, it can provide dense multiple angles and obtain richer image information, improving measurement accuracy and solving measurement challenges such as occlusion.
532
14 Aug 2023
Topic Review
Electrification of Offshore Oil and Gas Production
Subsea oil and gas (O&G) exploration demands significantly high power to supply the electrical loads for extraction and pumping of the oil and gas. The energy demand is usually met by fossil fuel combustion-based platform generation, which releases a substantial volume of greenhouse gases including carbon dioxide (CO2) and methane into the atmosphere.
622
14 Aug 2023
Topic Review
Chlorination of Harvested Rainwater
In many rural areas, primary water sources such as surface water and groundwater are at risk of contamination with rapid agricultural and industrial growth and climate change-related issues. Rainwater harvesting is an ancient practice for rural communities, and the momentum around its use is continually growing in recent years. Among the disinfection methods, chlorination is the most common method in large-scale water treatment schemes. It is also one of the most cost-effective water disinfection processes. It is further suggested that free chlorine could be extensively efficacious against most waterborne pathogens and cause destruction of the cell DNA of these microorganisms, except for Cryptosporidium parvum oocysts and Mycobacteria species. Consequently, this method could reduce waterborne diseases in many countries. In addition, chlorine tablets and liquid pool chlorine are reasonably accessible and safe for transportation to the end-users for residential purposes.
523
14 Aug 2023
Topic Review
Welding between Batteries and Busbars for Electric Vehicles
Electric vehicle battery systems are made up of a variety of different materials, each battery system contains hundreds of batteries. There are many parts that need to be connected in the battery system, and welding is often the most effective and reliable connection method. Laser welding has the advantages of non-contact, high energy density, accurate heat input control, and easy automation, which is considered to be the ideal choice for electric vehicle battery manufacturing. In all the production processes of power battery packs, there is a key process, that is, the welding of a single lithium battery and the connector. This is the key to the quality of series and parallel lithium-ion battery cells, that is, the welding of the battery pole and the busbars. The quality of the welding here will directly affect the reliability of the quality of the lithium-ion battery pack used as a power source for electric vehicles.
553
14 Aug 2023
Topic Review
Active Design Approach Affect the Environmental Psychology
The growing urban population has increased environmental demands and affects human health due to the rise of chronic diseases caused by populations’ inactivity. A new design trend introduced by scientists and researchers for solving this issue is the active design approach. Built environments that were expressly designed to improve physical activity correlated to higher rates of physical activity, which in turn, positively affects health.
247
14 Aug 2023
Topic Review
Pumped Thermal Energy Storage Technology
There has been an increase in the use of renewable energy resources, which has led to the need for large-scale Energy Storage units in the electric grid. Compressed Air Energy Storage (CAES) and Pumped Hydro Storage (PHES) are the main commercially available large-scale energy storage technologies. Among the in-development, large-scale Energy Storage Technologies, Pumped Thermal Electricity Storage (PTES), or Pumped Heat Energy Storage, stands out as the most promising due to its long cycle life, lack of geographical limitations, the absence of fossil fuel streams, and the possibility of integrating it with conventional fossil-fuel power plants. There have been a number of PTES systems proposed using different thermodynamic cycles, including the Brayton cycle, the Rankine cycle, and the transcritical Rankine cycle.
553
14 Aug 2023
Topic Review
DfD of Concrete Slabs with Mortar Joints
Design for disassembly is currently conducted with costly and time-consuming mechanical joints. Now, mortar joints with much weaker mortar types are proposed for new buildings, enabling easier disassembly by new methods: removal by direct pulling and removal by use of a system of flat jacks. Different weak mortar types were tested in the lab to achieve the properties required to check the transfer of wind loads and the level of resistance to separation during disassembly. Using a modelled case study building, the results showed that weak lime cement-based mortars had the required properties to substitute regular cement-based mortar in joints between slabs and a stabilising wall during a critical wind load. Regarding disassembly, pulling concrete slabs out with a mobile crane would be possible if hydro demolition systems could be implemented to remove parts of the mortar joint beforehand.
432
14 Aug 2023
Topic Review
Orthotropic Steel–UHPC Composite Deck
Although orthotropic steel decks (OSDs) have been widely used in the construction of long-span bridges, there are frequently reported fatigue cracks after years of operation, and the bridge deck overlay also presents severe damage due to OSD crack-induced stiffness reduction. Ultra-high performance concrete (UHPC), recognized as the most innovative cementitious composites and the next generation of high-performance materials, shows high strength, ductility, toughness, and good performance on durability. After its first application to the OSD bridge in the early 2000s, the orthotropic steel–UHPC composite deck has been comprehensively studied worldwide.
418
14 Aug 2023
Topic Review
Audi E-tron
The Audi e-tron family is a series of electric and hybrid concept cars shown by Audi from 2009 onwards. In 2012 Audi unveiled a plug-in hybrid version, the Audi A3 Sportback e-tron, released to retail customers in Europe in August 2014, and slated for the U.S. in 2015.
699
12 Aug 2023
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