Results 41 to 50 of about 4,458 (231)

One‐Step Core‐Shell Structuring of Silicon Graphene Composite Anode Materials by Aqueous Reduced Graphene Oxide: Toward Practical Use of High‐Performance Lithium‐Ion Battery

open access: yesENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 1, January 2026.
The one‐step QrGO‐coating strategy ensures uniform encapsulation within an adhesive and conductive layer, addressing SiOx anode challenges. It mitigates cracking, enhances charge transport, and supports a high silicon content of 20 wt.%, surpassing commercial 5 wt.%. QrGO‐coated electrodes achieve superior capacity retention, with full cells delivering
Byeong Guk Kim   +9 more
wiley   +1 more source

Mapping the Integration of Urban Air Mobility into the Built Environment: A Bibliometric Analysis and a Scoping Review

open access: yesDrones
Urban Air Mobility (UAM) has the potential to revolutionize urban transportation, largely with the deployment of Unmanned Aerial Vehicles (UAVs), commonly known as drones.
Ludovica Maria Campagna   +5 more
doaj   +1 more source

Distributed deep reinforcement learning for autonomous aerial eVTOL mobility in drone taxi applications

open access: yesICT Express, 2021
The urban aerial mobility (UAM) system, such as drone taxi or air taxi, is one of future on-demand transportation networks. Among them, electric vertical takeoff and landing (eVTOL) is one of UAM systems that is for identifying the locations of ...
Won Joon Yun   +3 more
doaj   +1 more source

Optimal Vertiport Airspace and Approach Control Strategy for Urban Air Mobility (UAM)

open access: yesSustainability, 2022
Recently, urban air mobility (UAM), a new transportation system that can expand urban mobility from 2D to 3D, has been in the spotlight all over the world. For successful implementation of UAM, not only eVTOL aircraft development but also various systems such as UAM traffic management are required; however, research on these areas is still insufficient.
openaire   +1 more source

Pre‐Lithiation and Continuous Lithium Compensation Technologies for Advanced Lithium‐Ion Batteries

open access: yesEcoEnergy, Volume 3, Issue 4, December 2025.
In response to continuous active lithium loss in LIBs, pre‐lithiation and continuous lithium compensation strategies have emerged as focal points of intensive research. This review provides a comprehensive and critical summary of recent advancements in advanced lithium replenishment technologies.
Wang Huang   +11 more
wiley   +1 more source

Urban Air Mobility Communications and Networking: Recent Advances, Techniques, and Challenges

open access: yesDrones
Over the past few years, our traditional ground-based transportation system has encountered various challenges, including overuse, traffic congestion, growing urban populations, high infrastructure costs, and disorganization.
Muhammad Yeasir Arafat, Sungbum Pan
doaj   +1 more source

Urban Air Mobility Market Study [PDF]

open access: yes, 2018
The Booz Allen Team explored market size and potential barriers to Urban Air Mobility (UAM) by focusing on three potential markets – Airport Shuttle, Air Taxi, and Air Ambulance.
Cohen, Adam   +6 more
core  

Tropospheric Propagation Effects Extracted From ADS‐B Messages

open access: yesEngineering Reports, Volume 7, Issue 12, December 2025.
This study explores the use of ADS‐B messages to estimate tropospheric effects, effectively isolating atmospheric influences from interference. The approach enables independent lower atmosphere studies and offers a cost‐free supplementary method for satellite applications, benefiting GNSS systems, especially at low elevation angles where multipath and ...
Alina‐Mihaela Badescu
wiley   +1 more source

Analysis and Prediction of Airspace Availability for Urban Air Mobility Operations in the Sao Paulo Metropolitan Region

open access: yesTransportes
Urban Air Mobility (UAM) is an emerging form of transportation that is expected to introduce novel flight networks into already busy and complex airspace surrounding major cities and metropolitan regions.
João Vitor Turchetti   +1 more
doaj   +1 more source

A Collaborative GIS for Planning of Urban Drone Launch and Landing Site Locations [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
The recent emergence of urban air mobility (UAM) is transforming urban landscape, with studies predicting its increasing role in the coming decades. This emergence of UAM calls for developing decision-support tools for planning of launch and landing ...
M. N. Mladenović   +7 more
doaj   +1 more source

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