Results 41 to 50 of about 22,425 (215)
Drone Detection and Pose Estimation Using Relational Graph Networks
Sensors, 2019 With the upsurge in use of Unmanned Aerial Vehicles (UAVs), drone detection and pose estimation by using optical sensors becomes an important research subject in cooperative flight and low-altitude security.
Ren Jin +4 more
doaj +1 more source
Research and Evaluation Method for Echelon Usage of Double-Life Equipment Considering Calendar Life
Applied Sciences, 2023 Echelon usage is an important usage and control method for double-life equipment considering calendar life, which can improve the utilization rate of equipment life and give full play to the economic benefits of the equipment. However, the life indicator
Pisheng Qin +3 more
doaj +1 more source
Advanced Electronic Materials, EarlyView.This paper reviews the physics of liquid metals in RF devices, including the influence of mechanical strain on resonance as well as fabrication methods and strategies for designing tunable and strain‐tolerant inductors, capacitors, and antennas.
Md Saifur Rahman, William J. Scheideler
wiley +1 more source
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
Uncertain Team Orienteering Problem With Time Windows Based on Uncertainty Theory
IEEE Access, 2019 Uncertainty theory is a branch of mathematics for modeling indeterminacy, especially belief degrees. This paper considers an application of uncertainty theory in team orienteering problem with time windows.
Jian Wang +4 more
doaj +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 +9 more
wiley +1 more source
Is Precision Agriculture Technology Adoption Persistently Overestimated?
Agribusiness, EarlyView.ABSTRACT Precision agriculture is sometimes assumed to diffuse steadily over time, and industry planning frequently extrapolates early adoption trends forward. This study evaluates the accuracy of such expectations by comparing agricultural input dealers' forecasts of future service offerings with the actual levels of offerings that dealerships ...
Trey Malone +5 more
wiley +1 more source
Simulation on design-oriented missile equipment support system under multiple disturbances
Xibei Gongye Daxue Xuebao, 2022 针对导弹装备, 尤其是新研装备或历史经验数据欠缺的装备, 在设计阶段保障方案规划不合理的问题, 提出了一种多扰动下面向设计的导弹装备保障系统仿真方法。构建了分层分块的混合递阶仿真框架, 抽象出装备保障过程中的装备类、保障类、管理类、环境类智能体, 并根据保障流程确定了这4类智能体的交互机制及信息传递链路。分析了影响装备保障决策的2类扰动, 建立了装备故障扰动和人员失误扰动模型, 采用双时钟机制实现仿真过程中的扰动注入, 并根据装备维修保障流程及智能体状态跃迁过程建立了保障系统的恢复行为模型 ...
GUO Lu, LIU Xiaodong
doaj +1 more source
Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.Quadrotor unmanned aerial vehicle control is critical to maintain flight safety and efficiency, especially when facing external disturbances and model uncertainties. This article presents a robust reinforcement learning control scheme to deal with these challenges.
Yu Cai +3 more
wiley +1 more source
Aerodynamic Optimization Design of the Rotor Blade of a Tilt-rotor Aircraft
Hangkong gongcheng jinzhan, 2019 The aerodynamic design of tilt-rotor needs to synthetically consider the different requirements in helicopter mode and fixed-wing aircraft mode. The multi-objective genetic algorithm based on Kriging surrogate model is used to establish an optimization ...
Sun Kaijun +3 more
doaj +1 more source