Results 41 to 50 of about 217,272 (213)
Joint Situational Assessment‐Hierarchical Decision‐Making Framework for Maneuver Intent Decisions
Advanced Intelligent Systems, EarlyView.This study introduces a new framework for decision‐making in unmanned combat aerial vehicles (UCAVs), integrating graph convolutional networks and hierarchical reinforcement learning (HRL). The method tackles adopts a curriculum‐based training approach guided by cross‐entropy rewards.
Ruihai Chen +4 more
wiley +1 more source
Assessment of the feasible CTA windows for efficient spacing with energy-neutral CDO [PDF]
, 2016 Continuous descent operations (CDO) with con- trolled times of arrival (CTA) at one or several metering fixes could enable environmentally friendly procedures at the same time that terminal airspace capacity is not ...
Dalmau Codina, Ramon +1 more
core
Spring and Power in Hovering Ornithopters
Advanced Intelligent Systems, EarlyView.Only small ornithopters can hover, longest at the hummingbird size. This article reviews the drive and power of these hovering machines, focusing on elastic energy and thrust boosters. Unlike two‐winged designs, X‐winged and multiple‐V‐winged ornithopters benefit from lower disk loading and slower, smaller wingbeats, and the clap‐and‐fling effect ...
Gih‐Keong Lau +4 more
wiley +1 more source
Gecko‐Inspired Adhesive Grasping from Convex to Flat Surfaces with Contact Sensing
Advanced Intelligent Systems, EarlyView.A gecko‐inspired adhesive gripper with a pair of soft hierarchical bio‐toes and a bionic rolling module is designed for adaptive grasping from convex to flat surfaces. Integrated adhesive contact sensing enables the smart grabbing of complex items. The gripper exhibits adaptability, load‐bearing capacity, and potential for applications in industries ...
Liuwei Wang +6 more
wiley +1 more source
Advanced Intelligent Systems, EarlyView.This work introduces a rigid‐flexible coupling building block by combining rigid parallel structures with soft origami structures. Through theoretical and experimental analysis, geometric parameters are optimized to achieve kinematic synergy between the two structures.
Ji Wang +8 more
wiley +1 more source
Peak-Seeking Optimization of Trim for Reduced Fuel Consumption: Flight-test Results
, 2013 A peak-seeking control algorithm for real-time trim optimization for reduced fuel consumption has been developed by researchers at the National Aeronautics and Space Administration (NASA) Dryden Flight Research Center to address the goals of the NASA ...
N. Brown, J. Schaefer
semanticscholar +1 more source
, 1970 Design and development of spacecraft with outer shell structure heat shielding and built-in, removable excursion ...
Vanalstyne, E. M.
core +1 more source
In‐Situ Observation of Post‐CO Intermediates to Decode C–C Coupling Pathways in CO2 Electroreduction
Angewandte Chemie International Edition, Accepted Article.Electrocatalytic carbon dioxide (CO2) reduction reaction (CO2RR) has emerged as a promising strategy for sustainable energy conversion and carbon utilization. Despite intensive research efforts, the understanding of intermediates and pathways from CO2RR to multicarbon (C2+) chemicals remains incomplete.
Mingxu Sun +9 more
wiley +1 more source
Large Payload Ground Transportation and Test Considerations
, 2016 Many spacecraft concepts under consideration by the National Aeronautics and Space Administrations (NASAs) Evolvable Mars Campaign take advantage of a Space Launch System payload shroud that may be 8 to 10 meters in diameter.
M. Rucker
semanticscholar +1 more source
Arthritis &Rheumatology, EarlyView.Objective The aim of this study was to determine whether pollutants such as fire smoke–related particulate matter <2.5 μm (PM2.5) are associated with incident rheumatoid arthritis (RA) and RA‐associated interstitial lung disease (RA‐ILD). Methods This patient–control study used Veterans Affairs (VA) data from October 1, 2009, to December 31, 2018.
Vanessa L. Kronzer +13 more
wiley +1 more source