Results 51 to 60 of about 274,911 (256)
Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective
Advanced Electronic Materials, EarlyView.Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe +4 more
wiley +1 more source
State-of-Charge Estimation of Batteries for Hybrid Urban Air Mobility
Aerospace, 2023 This paper proposes a framework for accurately estimating the state-of-charge (SOC) and current sensor bias, with the aim of integrating it into urban air mobility (UAM) with hybrid propulsion.
Min Young Yoo +4 more
doaj +1 more source
Urban Air Mobility: Safety Challenges
Transportation Research Procedia, 2020 Abstract Aviation industry has increased its potential in the last 100 years. From the first steps whereas aviation 1.0 can be defined as the period between the first powered flight (1903) and the advent of the first commercial airliner that was operated on a scheduled international route, the Airco DH.16 (1919) between London and Paris, humanity has
openaire +1 more source
Environmental Costs Account: a base for measuring sustainability in transport plans. [PDF]
, 2009 Each city need to develop sustainable transport plans according to its fu-ture developments. This means identifying the best policy package of transport measures that could produce more sustainable future scenarios: lowest environmental impact, but also ...
Fernández Heredia, Álvaro +2 more
core +2 more sources
Advanced Energy and Sustainability Research, EarlyView.Hydrogen‐powered aviation offers a transformative pathway to zero‐emission flight by eliminating in‐flight CO2 emissions. Key considerations include propulsion systems (fuel cells and hydrogen combustion), cryogenic storage and insulation challenges, infrastructure and cost barriers, and supply‐chain constraints.
Mubasshira +4 more
wiley +1 more source
Influences on the fraction of hydrophobic and hydrophilic black carbon in the atmosphere [PDF]
, 2011 Black carbon (BC) is a short term climate forcer that directly warms the atmosphere, slows convection, and hinders quantification of the effect of greenhouse gases on climate change.
Coe, H. +4 more
core +3 more sources
Farmers’ Protests in Germany: Media Coverage and Types of Bias
Agribusiness, EarlyView.ABSTRACT The German farmers’ protests of 2024 sparked widespread media coverage and public debate. Yet, media coverage was not always positive, reflecting the media's attention‐seeking and selective focus. Occurrences of farmers blocking media outlets reflected distrust in how their concerns were portrayed.
Felix Schlichte, Doris Läpple
wiley +1 more source
Environmental Research LettersIn this study, we assessed air quality (AQ) and urban climate during the mobility restrictions implemented in the Greater Tokyo Area, Japan, the world’s most populated region, in response to the COVID-19 pandemic. Observations from dense surface networks
Alessandro Damiani +5 more
doaj +1 more source
Air Route Design of Multi-Rotor UAVs for Urban Air Mobility
DronesUAVs will present significant air traffic in the urban airspace in the future, which brings new challenges to urban air traffic management and control.
Shan Li +3 more
doaj +1 more source
How to monitor sustainable mobility in cities? Literature review in the frame of creating a set of sustainable mobility indicators [PDF]
, 2015 The role of sustainable mobility and its impact on society and the environment is evident and recognized worldwide. Nevertheless, although there is a growing number of measures and projects that deal with sustainable mobility issues, it is not so easy to
Gillis, Dominique +2 more
core +2 more sources