Results 141 to 150 of about 8,757,591 (356)

Smart Bioinspired Material‐Based Actuators: Current Challenges and Prospects

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This work gathers, in a review style, an extensive and comprehensive literature overview on the development of autonomous actuators based on synthetic materials, bringing together valuable knowledge from several studies. Furthermore, the article identifies the fundamental principles of actuation mechanisms and defines key parameters to address the size
Alejandro Palacios, Léon Chiriatti, Simon Poppinga, Thomas Speck, Vincent Le Houérou   +4 more
wiley   +1 more source

Multiple scattering theory for polycrystalline materials with strong grain anisotropy: theoretical fundamentals and applications [PDF]

arXiv, 2017
This work is a natural extension of the authors previous work, Multiple scattering theory for heterogeneous elastic continua with strong property fluctuation, theoretical fundamentals and applications, which established the foundation for developing multiple scattering model for strongly scattering heterogeneous elastic continua.
arxiv  

A survey of particle contamination in electronic devices [PDF]

The experiences are given of a number of National Aeronautics and Space Administration (NASA) and Space and Missile System Organization (SAMSO) contractors with particle contamination, and the methods used for its prevention and detection, evaluates the ...
Adolphsen, J. W., Kagdis, W. A., Timmins, A. R.   +2 more
core   +1 more source

Biosignature Preservation and Detection in Mars Analog Environments : May 16–18, 2016, Lake Tahoe, Nevada [PDF]

, 2016
Our objective is to focus strategies to detect a range of possible biosignatures on Mars in different categories of geologic settings by assessing the attributes and preservation potential of various biosignatures in different Mars-analog habitable ...

core  

Approximated Computation of Belief Functions for Robust Design Optimization [PDF]

, 2012
This paper presents some ideas to reduce the computational cost of evidence-based robust design optimization. Evidence Theory crystallizes both the aleatory and epistemic uncertainties in the design parameters, providing two quantitative measures, Belief
A., Agarwal H., Croisard N., Denoeux T., Helton J. C., Helton J. C., Larson J., Mourela Z. P., Patel Mukund, Vasile M., Vasile M.   +10 more
core   +2 more sources

Robust Reinforcement Learning Control Framework for a Quadrotor Unmanned Aerial Vehicle Using Critic Neural Network

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, Yefeng Yang, Tao Huang, Boyang Li   +3 more
wiley   +1 more source

AERONET sun photometer as a didactic tool for understanding aerosol refractive index in the atmosphere: a case study for central Amazon [PDF]

Revista Brasileira de Ensino de Física
As the impacts of climate change become increasingly evident, understanding the role of atmospheric aerosols in regulating Earth’s climate is crucial. Despite their significance, the optical properties of aerosols remain unclear to the general public and,
Marco A. Franco, Pedro H.T. Tavares, Luciana V. Rizzo, Fernando G. Morais, Rafael Palácios, Paulo Artaxo   +5 more
doaj   +1 more source

Advanced structures technology applied to a supersonic cruise arrow-wing configuration [PDF]

The application of advanced technology to a promising aerodynamic configuration was explored to investigate the improved payload range characteristics over the configuration postulated during the National SST Program.
Davis, G. W., Sakata, I. F.
core   +1 more source

Coupled flight dynamics and CFD - demonstration for helicopters in shipborne environment [PDF]

, 2017
The development of high-performance computing and computational fluid dynamics methods have evolved to the point where it is possible to simulate complete helicopter configurations with good accuracy.
Barakos, G.N., Crozon, C., Steijl, R.
core   +1 more source

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, Yao‐Wei Chin, Shih‐Chun Lin, Yu‐Hsiang Lai, Boo Cheong Khoo   +4 more
wiley   +1 more source