Results 81 to 90 of about 6,925 (258)
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 +4 more
wiley +1 more source
COTS Devices for Space Missions in LEO
IEEE AccessIn the framework of the NewSpace revolution, time-to–market and budget constraints drive the development of small and medium-sized satellites in Low Earth Orbit (LEO) orbit.
Giuseppe Brunetti +3 more
doaj +1 more source
FEWT: Frequency‐Enhanced Wavelet‐Based Transformer for Multimodal Wheeled Bimanual Manipulation
SmartBot, EarlyView.An embodied mobile bimanual robot learns dexterous manipulation skills through imitation learning with multimodal perception. The integration of vision, proprioception, and tactile sensing establishes a comprehensive perception–action loop, enabling the robot to continuously understand, interact with, and adapt to complex physical environments.
Jiaxin Huang +6 more
wiley +1 more source
Perforation Enhances Sound Insulation in Plate Lattice Metamaterials
Small, EarlyView.Herein, perforations are engineered into face‐centered cubic plate lattice metamaterials to convert normally detrimental openings into acoustically active features. Experiments, finite‐element analyses, and a reduced‐order transfer‐matrix model show that selected perforation geometries activate Helmholtz‐like and cavity‐mediated resonances, enhancing ...
Jing Heng Tan +3 more
wiley +1 more source
BMC GenomicsBackground Outbreaks of the coral predator Crown-of-Thorns Starfish (CoTS) pose a severe threat to coral reefs in the Indo-Pacific Ocean. In 2018, the South China Sea (SCS) experienced significant CoTS outbreaks, leading to extensive coral mortality ...
Peng Tian +9 more
doaj +1 more source
Research on High Effi ciency Computing Technology Based on COTS Products
天地一体化信息网络, 2020 Aiming at the problem of space environment adaptability of COTS products,the fault tolerance reinforcement of space computer was carried out through crosss layer collaborative software fault tolerant technology.The space computer based on COTS product ...
Yue ZHANG +4 more
doaj
Structural Concrete, EarlyView.Abstract In precast concrete structures, optimizing the design of corbels by considering the contributions of secondary reinforcement elements can significantly improve construction economy, especially when corbels are repeated multiple times. This paper proposes a strut‐and‐tie model for reinforced concrete corbels subjected to vertical and/or ...
Rejane Martins Fernandes Canha +3 more
wiley +1 more source
Structural Concrete, EarlyView.Abstract This paper presents a regression‐based methodology to estimate the Torsional Stiffness Reduction Factor (TSRF) of reinforced concrete beams under combined torsion and shear. A numerical database of 6816 samples was generated using the Combined Action Softened Truss Model (CA‐STM) implemented in Python, considering design guidelines prescribed ...
Khrys K. S. Medeiros +2 more
wiley +1 more source
Evaluating structural resistance and updating modeling uncertainties through testing
Structural Concrete, EarlyView.Abstract The aging of infrastructure necessitates a robust and rational methodology for the assessment of existing structures. Design codes provide general models which cover different design scenarios and are thus overly conservative. Also, such design approaches lack field data and, if applied directly to existing works, often lead to unnecessarily ...
Miguel Fernández Ruiz +4 more
wiley +1 more source