Results 21 to 30 of about 85,461 (258)

Assessing the Predictive Performance of Two DNN Models: A Comparative Analysis to Support Reusing Training Weights for Autonomous Aerial Refueling Missions

IEEE Access, 2023
The United States Navy aims to enhance its fleet by expanding the deployment of unmanned aircraft in carrier air wings. However, certifying the autonomous refueling of unmanned aerial platforms currently lacks a publicly available method.
Violet Mwaffo, Dillon Miller, Donald H. Costello   +2 more
doaj   +1 more source

Stable microstructure in a nanocrystalline copper–tantalum alloy during shock loading

Communications Materials, 2020
Shock loading of materials alters the microstructure and considerably degrades mechanical performance. Here, shock loading of a nanocrystalline Cu–Ta alloy is found to induce minor changes to microstructure and mechanical performance, attributed to the ...
B. Chad Hornbuckle, Cyril L. Williams, Steven W. Dean, Xuyang Zhou, Chaitanya Kale, Scott A. Turnage, John D. Clayton, Gregory B. Thompson, Anit K. Giri, Kiran N. Solanki, Kristopher A. Darling   +10 more
doaj   +1 more source

A method for calculating the discovery time of ballistic missiles detected by an infrared early warning satellite

AIP Advances, 2023
To determine the high dynamic change characteristics of the relative space position between a ballistic missile and an early warning satellite during detection, a centric motion model of the ballistic missile and the early warning satellite are ...
Taotao Zhang, Weiyi Chen, Dengjian Fang
doaj   +1 more source

Understanding Thermodynamic and Kinetic Stabilization of FeNiZr via Systematic High-Throughput In Situ XRD Analysis

Metals, 2020
The role of kinetically and thermodynamically driven microstructural evolution on FeNiZr was explored through in situ XRD analysis. A statistical approach based on log-likelihoods and composite link model was used to fit and extract important data from ...
Efraín Hernández-Rivera, Sean J. Fudger, B. Chad Hornbuckle, Anthony J. Roberts, Kristopher A. Darling   +4 more
doaj   +1 more source

Analysis of underwater plasma discharge based on equivalent circuit parameters

AIP Advances, 2021
The control of discharge mode and the optimization of energy efficiency are of particular concern as the significant impact on the application of the underwater plasma discharge system.
Liang Qiao, Xiaobing Zhang, Bing Yan, Zhen Han, Chao Yang, Yang Liu   +5 more
doaj   +1 more source

Advancing Metal–Organic Framework‐Based Composites for Effective Chemical Warfare Agent Detoxification under Real‐World Conditions

Advanced Materials, EarlyView.
This review describes recent developments in the design and synthesis of metal–organic frameworks (MOF)/textile composites for the detoxification of chemical warfare agent and simulants with extensive discussion on the advantages and disadvantages of different methods.
Zhihua Cheng, Kira M. Fahy, Gregory W. Peterson, Kent O. Kirlikovali, Omar K. Farha   +4 more
wiley   +1 more source

Multiple Leap Maneuver Trajectory Design and Tracking Method Based on Prescribed Performance Control during the Gliding Phase of Vehicles

International Journal of Aerospace Engineering
A novel standard trajectory design and tracking guidance used in the multiple active leap maneuver mode for hypersonic glide vehicles (HGVs) is proposed in this paper.
Taotao Zhang, Jun Zhang, Sen Shen, Weiyi Chen   +3 more
doaj   +1 more source

Marine Trajectory Reconstruction Method Based on Navigation State Recognition and Bi-Directional Kinematic Interpolation

Journal of Marine Science and Engineering
The trajectory data mining and analysis of maritime targets are of great significance in furthering the construction of maritime traffic facilities, improving the ability of marine supervision and maintaining national marine security.
Yifei Liu, Zhangsong Shi, Bing Fu, Huihui Xu, Hao Wu   +4 more
doaj   +1 more source

State of the Art of Low‐Frequency Acoustic Modulation: Intensity Enhancement and Directional Control

Advanced Science, EarlyView.
High intensity low‐frequency sound sources hold significant value in many fields. However, their long wavelength, strong penetrability, and tendency to diffract make direction control and intensity enhancement challenging. Acoustic generators and metamaterial‐based acoustic devices still face issues such as low energy efficiency, poor directional ...
Jingsong Xu, Yunfeng Ye, Tao Dong, Zhaochu Yang, Nuno Miguel Matos Pires, Yu Zhou, Fuyu Tao, Jin Wang, Junshan Zhang, Guoxi Luo, Libo Zhao, Qi Mao, Yangtao Wang, Zhuangde Jiang   +13 more
wiley   +1 more source

Nonlinear Model Predictive Control for Heavy-Duty Hybrid Electric Vehicles Using Random Power Prediction Method

IEEE Access, 2020
A primary challenge to the implementation of hybrid electric vehicles (HEVs) is the design of the energy management strategy for the vehicle. Most conventional strategies have been designed for passenger vehicles using rule-based or optimization-based ...
Luming Chen, Zili Liao, Xiaojun Ma
doaj   +1 more source