Results 61 to 70 of about 113,868 (281)

Research on a New Process of Agile Turn with Engine Reignition Based on Optimal Control

Complexity, 2021
A new process of agile turn with engine reignition is proposed in this paper. Compared with the traditional process, this process includes deceleration phase, larger angle manoeuvre phase, and engine reignition phase. Firstly, the paper describes the new
Kang Niu, Jianqiao Yu, Xi Chen, Di Yang, Ziyuan Li   +4 more
doaj   +1 more source

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

Impact of Controlled Magneto‐Structural Coupling in MnCoGe‐Based Compounds on the Design of Multifunctional Materials for Technological Advances

Advanced Science, EarlyView.
In this work, the authors systematically investigate how Ni substitution regulates the magneto‐structural coupling and their functional consequences in the MnCoGe‐based compounds. Geometric nonlinear theory analysis reveals that Ni modification change of magneto‐structural transition can alleviate the lattice incompatibility, thereby broadening the ...
Kang Liu, Xiaowen Hao, Wayne D. Hutchison, Stewart J. Campbell, Xiaoming Huang, Cuiping Zhang, Guoliang Li, Xuefei Miao, Fengjiao Qian, Jianli Wang, Qingyong Ren   +10 more
wiley   +1 more source

Astronautics & Astronomy - a Profitable Partnership

Journal of Aerospace Technology and Management, 2015
The connection between Astronautics and Astronomy is naturally straight forward. Astronomy is one of the oldest scientific areas along the human development, thousands of years.
Othon Cabo Winter
doaj  

The Collaborative Spark That Ignited the Field of Stromal Stem Cell Biology

Bioengineering
Russia has produced many scientists of great renown in a multitude of fields from chemistry, physics, astronautics, and mathematics to biology, pathology, and medicine [...]
James T. Triffitt
doaj   +1 more source

Deflecting small asteroids using laser ablation : Deep space navigation and asteroid orbit control for LightTouch2 Mission [PDF]

, 2013
This paper presents a low-cost, low mass, mission design to successfully intercept and deflect a small and faint, 4 m in diameter asteroid. Intended to be launched after 2025, the laser-ablating mission, LightTouch2 will be used to deflect the orbit of ...
Branco, Joao, Garcia Yarnoz, Daniel, Sanchez Cuartielles, Joan-Pau, Vasile, Massimiliano, Vetrisano, Massimo   +4 more
core   +1 more source

Artificial Cilia for 360° Direction‐Sensitive Acoustic Sensing Through Additive Micromanufacturing

Advanced Electronic Materials, EarlyView.
An artificial cilium using additive micro‐manufacturing technologies for direction‐sensitive acoustic sensing is prepared, including electrospray and 3D micro‐direct ink writing. Two resonances are achieved on a cilium by printing two independent electrode‐to‐electrode interconnect bridges.
Yikang Li, Dazhi Wang, Yiwen Feng, Chang Liu, Xu Chen, Zefei Li, Xiangji Chen, Ran Zhang, Xiaopeng Zhang, Shiwen Liang, Liujia Suo, Weiwei Li, Guo Liu, Jifei Liu, Tiesheng Wang   +14 more
wiley   +1 more source

Fast Mesh Refinement in Pseudospectral Optimal Control [PDF]

, 2019
Mesh refinement in pseudospectral (PS) optimal control is embarrassingly easy --- simply increase the order $N$ of the Lagrange interpolating polynomial and the mathematics of convergence automates the distribution of the grid points.
Koeppen, N., Proulx, R. J., Ross, I. M., Wilcox, L. C.   +3 more
core   +1 more source

Mirror formation control in the vicinity of an asteroid [PDF]

, 2008
Two strategies are presented for the positioning and control of a spacecraft formation designed to focus sunlight onto a point on the surface of asteroid, thereby sublimating the material and ejecting debris creating thrust.
Battin R. H., Hu W., Kahle R., Lunan D., Maddock C., Melosh H. J., Near Earth Object Program, Rossi A., SanchezCuartielles J.P., Schaub H., Strang G., Vasile M.   +11 more
core   +2 more sources

Flexible Memory: Progress, Challenges, and Opportunities

Advanced Intelligent Discovery, EarlyView.
Flexible memory technology is crucial for flexible electronics integration. This review covers its historical evolution, evaluates rigid systems, proposes a flexible memory framework based on multiple mechanisms, stresses material design's role, presents a coupling model for performance optimization, and points out future directions.
Ruizhi Yuan, Sen Chen, Minghui Guo, Ziliang Cui, Yujie Du, Jing Liu   +5 more
wiley   +1 more source