Results 51 to 60 of about 293,379 (306)

Learning from the COVID-19 lockdown in berlin: Observations and modelling to support understanding policies to reduce NO2.

Atmospheric Environment: X, 2021
Urban air pollution is a substantial threat to human health. Traffic emissions remain a large contributor to air pollution in urban areas. The mobility restrictions put in place in response to the COVID-19 pandemic provided a large-scale real-world ...
Erika von Schneidemesser, Bheki Sibiya, Alexandre Caseiro, Tim Butler, Mark G. Lawrence, Joana Leitao, Aurelia Lupascu, Pedro Salvador   +7 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

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

Advanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang, Weipeng Wang, Xuan Cong, Shiyu Wang, Gao Li, Sen Gong, Lin Huang, Hongxin Zeng, Yaxin Zhang, Ziqiang Yang   +9 more
wiley   +1 more source

Predicting human mobility through the assimilation of social media traces into mobility models [PDF]

, 2016
Predicting human mobility flows at different spatial scales is challenged by the heterogeneity of individual trajectories and the multi-scale nature of transportation networks.
Beiró, M. G., Cattuto, C., Panisson, A., Tizzoni, M.   +3 more
core   +3 more sources

Mobility on Demand in the United States [PDF]

, 2020
The growth of shared mobility services and enabling technologies, such as smartphone apps, is contributing to the commodification and aggregation of transportation services.
P Davidson, S Shaheen, SAE International
core   +1 more source

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

High‐Speed Altitude Regulation With Neuromorphic Camera and Lightweight Embedded Computation

Advanced Intelligent Systems, EarlyView.
Neuromorphic cameras deliver rapid, high‐dynamic‐range sensing but overwhelm embedded processors at high speeds. This work presents a lightweight, optimized Lucas–Kanade optical flow method with parallelization, gyroscopic derotation, and adaptive event slicing.
Simon L. Jeger, Alessandro Marchei, Charbel Toumieh, Dario Floreano   +3 more
wiley   +1 more source

Air quality and urban climate improvements in the world’s most populated region during the COVID-19 pandemic

Environmental Research Letters
In 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, Hitoshi Irie, Dmitry Belikov, Raul R Cordero, Sarah Feron, Noriko N Ishizaki   +5 more
doaj   +1 more source

Terrestrial Cyborg Insects for Real‐Life Applications

Advanced Intelligent Systems, EarlyView.
This article reviews the development of terrestrial cyborg insects from their emergence in 1997 to mid‐2025, examining three key aspects: locomotion control methods, associated challenges with proposed solutions, and practical applications. Framing these biohybrid systems as insect‐scale mobile robots, the review provides foundational insights for new ...
Hai Nhan Le, Lachlan Fitzgerald, Phuoc Thien Phan, Robbie Wilson, Christofer Clemente, Huu Duoc Nguyen, Hirotaka Sato, Hoang‐Phuong Phan, Peter Ross McAree, Thanh Nho Do, Tat Thang Vo‐Doan   +10 more
wiley   +1 more source

Air Route Design of Multi-Rotor UAVs for Urban Air Mobility

Drones
UAVs 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, Honghai Zhang, Zhuolun Li, Hao Liu   +3 more
doaj   +1 more source