Results 111 to 120 of about 2,039 (219)

Directive Antenna Clutter Loss in Slant Paths

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT This paper investigates the development of a clutter loss model specifically for slant paths involving directive antennas. Conventionally, clutter loss is characterized by using isotropic antennas to facilitate standard link budget calculations via single antenna gain values.
Fernando Pérez Fontán, Vicente Pastoriza‐Santos, Fernando Machado Domı́nguez, Thomas Prechtl, Pavel Pechac   +4 more
wiley   +1 more source

Multi-target positioning and motion tracking enabled by a compound meta-eye system. [PDF]

Microsyst Nanoeng
Zhang L, Zhang L, Zhao X, Li J, Cao H, Yang J, Zhang C, Wang Z, Li Y, Shi H, Zhang Z, Li J, Guo H, Xing F, Zhang Z.   +14 more
europepmc   +1 more source

Integrating Image Segmentation and Deep Learning to Improve Radio Frequency Propagation Models

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT This paper proposes a multi‐sensor approach to improve radio frequency (RF) propagation models, which play a key role in the rapidly expanding field of connected vehicle technology. Focusing on the 1‐ to 20‐GHz frequency range, which is critical for both satellite‐to‐vehicle and base station‐to‐vehicle communications, our study introduces a ...
Jonathan Israel, Xavier Boulanger, Vegard Arneson   +2 more
wiley   +1 more source

Reinforcement Learning-Driven Autonomous Path Planning for Unmanned Surface Vehicles: Current Status, Challenges, and Future Prospects. [PDF]

Sensors (Basel)
Dong Z, Zheng J, Guo C, Zhao F, Chu Y, Chen X.   +5 more
europepmc   +1 more source

AI‐Driven Circular Construction Waste Management for Advancing Sustainable Development

Sustainable Development, EarlyView.
ABSTRACT Construction and demolition waste (C&DW) represents up to 40% of global solid waste, posing a significant barrier to achieving circular economy (CE) objectives and the Sustainable Development Goals (SDGs), particularly SDG 11 and SDG 12. However, construction waste management (CWM) systems remain constrained by fragmented data environments ...
Mohamed T. Elnabwy, Pablo Martinez
wiley   +1 more source

A Missing Data Imputation Method for Gas Time Series Based on Spatio-Temporal Graph Attention Network-Echo State Network. [PDF]

Sensors (Basel)
Yang J, Qin K, Ye J, Zhao Y, Shu L.
europepmc   +1 more source

Climate‐Resilient Agri‐Food Systems (CRAFS): A Review of Approaches and Outcomes of Agri‐Food Systems

Sustainable Development, EarlyView.
ABSTRACT Climate change is increasingly destabilizing agri‐food systems globally, with complex disruptions extending across production, distribution, and consumption. In response, climate‐resilient agri‐food system (CRAFS) approaches have gained prominence as a means to sustain food security under escalating climatic stressors.
M Manjurul Islam, Evan D. G. Fraser
wiley   +1 more source

Study on dynamic and static load characteristics and rockburst induced mechanism under the influence of fault. [PDF]

Sci Rep
Yuan A, Kong P, Wang P, Liu C, Lu L.
europepmc   +1 more source

Key Technical Fields and Future Outlooks of Space Manipulators: A Survey

SmartBot, EarlyView.
This paper systematically reviews the technological development of space manipulators, emphasizing the unique challenges posed by space environments. It examines four areas: structural design, modeling, planning, and control, while introducing typical ground test platforms.
Gang Chen, Zeyuan Huang, Ying Yan, Xiaokang An, Zhikai Zhao, Jirong Lin, Xiangrong Zhao, Xianyuan Gao, Junyi Zong, Xuewen Jia, Zhipeng Yao, Jianliang Liao, Ning Ji   +12 more
wiley   +1 more source

Using unmanned aerial vehicles (drones) to improve access to blood in low- and middle-income countries: Current challenges and opportunities. [PDF]

Vox Sang
Datta SS, Mondal R, Deb S, Tortora G, Pirri A.   +4 more
europepmc   +1 more source