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All Topic Review Biography
Topic Review
Urban Archetypes
To make cities more sustainable and livable and to achieve climate targets in transportation, cities around the globe must undergo sustainable transformations. However, disparities in initial conditions pose challenges when trying to implement these sustainable changes. Identifying these differences aids in the comprehension of future developments. Urban archetypes represent a typification of cities in order to investigate mobility-related homogeneity between cities.
  • 491
  • 27 Nov 2023
Topic Review
Upscaling of Carbon-Based Perovskite Solar Module
Perovskite solar cells (PSCs) and modules are driving the energy revolution in the coming photovoltaic field. PSCs reached efficiency close to the silicon photovoltaic technology by adopting low-cost solution processes. Despite this, the noble metal (such as gold and silver) used in PSCs as a counter electrode made these devices costly in terms of energy, CO2 footprint, and materials. Carbon-based perovskite solar cells (C-PSCs) and modules use graphite/carbon-black-based material as the counter electrode. The formulation of low-cost carbon-based inks and pastes makes them suitable for large area coating techniques and hence a solid technology for imminent industrialization.
  • 320
  • 19 Jan 2023
Topic Review
Upper-Limb Physical Rehabilitation with Techology
The use of videogames and motion capture systems in physical rehabilitation contributes to the recovery of the patient, for this reason, there is a tendency to continue generating proposals that face the challenges of rehabilitation with technologies that offer precision and care coverage, and that, additionally, integrate elements that promote the motivation and participation of the patient.
  • 678
  • 16 Nov 2020
Topic Review
Updated Principles of Sustainable Engineering
Sustainable engineering refers to the integration of social, environmental, and economic considerations into product, process, and energy system design methods. Additionally, sustainable engineering encourages the consideration of the complete product and process lifecycle during the design effort. 
  • 7.9K
  • 24 Jun 2022
Topic Review
Up-Flow Anaerobic Sludge Blanket
The interest in research on up-flow anaerobic sludge blanket (UASB) reactors is growing. Although the state of research on UASB is to be considered advanced, there are still several points that will be developed in future research such as the consolidation of the results obtained on a semi-industrial or real scale, the use of real matrices instead of synthetic ones.
  • 883
  • 21 Oct 2021
Topic Review
Unveiling the Hidden Effects of Automated Vehicles
The deployment of automated vehicles (AVs) has the potential to disrupt and fundamentally transform urban transportation. As their implementation becomes imminent on cities’ streets, it is of great concern that no comprehensive strategies have been formulated to effectively manage and mitigate their potential negative impacts, particularly with respect to the components of the do no significant harm (DNSH) framework recently introduced in the EU taxonomy. 
  • 325
  • 31 Jul 2023
Topic Review
Unmanned Spaceflights to the International Space Station
Uncrewed spaceflights to the International Space Station (ISS) are made primarily to deliver cargo, however several Russian modules have also docked to the outpost following uncrewed launches. Resupply missions typically use the Russian Progress spacecraft, European Automated Transfer Vehicles, Japanese Kounotori vehicles, and the American Dragon and Cygnus spacecraft. The primary docking system for Progress spacecraft is the automated Kurs system, with the manual TORU system as a backup. ATVs also use Kurs, however they are not equipped with TORU. Progress and ATV can remain docked for up to six months. The other spacecraft — the Japanese HTV, the SpaceX Dragon and the Orbital Sciences Cygnus — rendezvous with the station before being grappled using Canadarm2 and berthed at the nadir port of the Harmony or Unity module for one to two months. As of September 2018, Progress spacecraft have flown most of the uncrewed missions to the ISS.
  • 425
  • 19 Oct 2022
Topic Review
Unmanned NASA Missions
Following is a sampling of some of NASA's past and present programs excluding manned spacecraft. The years in brackets are for first and latest launching. A program is a number of flights or missions with the same kind of spacecraft, therefore the name of the program and the name of the spacecraft used will often be the same. In all, NASA have made more than 1,000 unmanned missions into Earth orbit or beyond.
  • 947
  • 23 Oct 2022
Topic Review
Unmanned Ground Vehicles
Unmanned ground vehicles (UGVs) have great potential in the application of both civilian and military fields, and have become the focus of research in many countries. Environmental perception technology is the foundation of UGVs, which is of great significance to achieve a safer and more efficient performance.
  • 2.7K
  • 22 Feb 2021
Topic Review
Unmanned Aircraft System Simulation
Unmanned aircraft system simulation focuses on training pilots (or operators) to control an unmanned aircraft or its payload from a control station. Flight simulation involves a device that artificially re-creates aircraft flight and the environment in which it flies for pilot training, design, or other purposes. It includes replicating the equations that govern how aircraft fly, how they react to applications of flight controls, the effects of other aircraft systems, and how the aircraft reacts to external factors such as air density, turbulence, wind shear, cloud, precipitation, etc. Manned simulation is used for a variety of reasons, including flight training (mainly of pilots), the design and development of the aircraft itself, and research into aircraft characteristics and control handling qualities. Unlike manned simulation, unmanned aircraft system (UAS) simulation does not involve a pilot aboard the training device.
  • 433
  • 21 Oct 2022
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