Results 81 to 90 of about 2,061,225 (235)

Data-driven Uncertainty Quantification of the Wave Telescope Technique: General Equations and Demonstration Using HelioSwarm

The Astrophysical Journal Supplement Series, 2023
The upcoming NASA mission HelioSwarm will use nine spacecraft to make the first simultaneous multipoint measurements of space plasmas spanning multiple scales.
T. Broeren, K. G. Klein
doaj   +1 more source

Application Status and Prospect of Digital Twin for On-Orbit Spacecraft

IEEE Access, 2021
With cloud computing, big data, artificial intelligence and other new information technologies going into space, the era of space intelligence is coming. The spacecraft is facing more frequent and multi-task tests in an unprecedented complex environment,
Wenqiang Yang, Yu Zheng, Shaoyang Li
doaj   +1 more source

Blend Electrodes in Lithium‐Ion Batteries: Investigation of Inhomogeneities Using a Spatially Resolved Transmission Line Model

Batteries &Supercaps, EarlyView.
A model for blend electrodes is developed, parameterized, and validated using experimental data from a SiOx/Gr electrode. The model provides information about local states, such as the degree of lithiation or material‐specific C‐rates, distinguishing between the two active materials.
Maximilian Schamel, Julian Knorr, Andrea Kinberger, Michael A. Danzer   +3 more
wiley   +1 more source

Observations of the cusp region under northward IMF [PDF]

Annales Geophysicae, 2001
We present a comparative study of the cusp region using the EISCAT Svalbard Radars (ESR) and the Cluster spacecraft. We focus in this paper on 2 February 2001, over the time period from 07:30 UT to 12:00 UT when the oblique ESR antenna pointing ...
F. Pitout, F. Pitout, J.-M. Bosqued, D. Alcaydé, W. F. Denig, H. Rème   +5 more
doaj   +1 more source

Adverse Outcome Pathways Applied to Space Radiation Research

Environmental and Molecular Mutagenesis, EarlyView.
ABSTRACT Long‐duration spaceflight exposes astronauts to various stressors that can alter human physiology, potentially causing immediate and long‐term health effects. These stressors can damage biomolecules, cells, tissues, and organs, leading to adverse outcomes.
Vinita Chauhan, Veronica S. Grybas, Devyn Hoopfer, Casey Higginson, Elizabeth A. Ainsbury, Omid Azimzadeh, Afshin Beheshti, Steve Blattnig, Marjan Boerma, Sylvain V. Costes, Stephen Doty, Christelle Adam‐Guillermin, Nobuyuki Hamada, Patricia Hinton, Janice L. Huff, Robert Reynolds, Ruth C. Wilkins, Scott Wood, Carole L. Yauk   +18 more
wiley   +1 more source

Analysis of plasmaspheric plumes: CLUSTER and IMAGE observations [PDF]

Annales Geophysicae, 2006
Plasmaspheric plumes have been routinely observed by CLUSTER and IMAGE. The CLUSTER mission provides high time resolution four-point measurements of the plasmasphere near perigee.
F. Darrouzet, J. De Keyser, P. M. E. Décréau, D. L. Gallagher, V. Pierrard, J. F. Lemaire, J. F. Lemaire, B. R. Sandel, I. Dandouras, H. Matsui, M. Dunlop, J. Cabrera, A. Masson, P. Canu, J. G. Trotignon, J. L. Rauch, M. André   +16 more
doaj   +1 more source

Effects of Galactic Irradiation on Thermal and Electronic Transport in Tungsten

physica status solidi (b), EarlyView.
This atomic‐scale study reveals how low‐to‐mid‐energy space irradiation alters tungsten's thermal and electronic behavior, even at low defect levels. Focusing on vacancy sites in bulk and near grain boundaries, it employs two novel approaches: site‐projected thermal conductivity and the N2$^{2}$ method for the thermal and electronic response analysis ...
Chinonso Ugwumadu, David A. Drabold, Roxanne M. Tutchton   +2 more
wiley   +1 more source

Distributed Leader‐Following Formation of Discrete‐Time Multi‐Agent LPV Systems

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT This paper addresses the leader‐following formation consensus problem for multi‐agent systems (MASs) with agents represented by discrete‐time linear parameter‐varying (LPV) models. The scenario where each agent can be modeled with distinct time‐varying scheduling parameters is investigated with respect to compensation signals.
Paulo S. P. Pessim, Pedro H. S. Coutinho, Márcio J. Lacerda, Vicenç Puig, Reinaldo M. Palhares   +4 more
wiley   +1 more source

Kernel Embedding Approaches to Orbit Determination of Spacecraft Clusters

, 2018
This paper presents a novel formulation and solution of orbit determination over finite time horizons as a learning problem. We present an approach to orbit determination under very broad conditions that are satisfied for n-body problems. These weak conditions allow us to perform orbit determination with noisy and highly non-linear observations such as
Sharma, Srinagesh, Cutler, James W.
openaire   +2 more sources

The Effect of Tip Design on Technological Performance During the Exploration of Earth, Lunar, and Martian Soil Environments

Journal of Field Robotics, EarlyView.
ABSTRACT This paper investigates the penetration performance of soil‐burrowing probes with different tip designs during shallow‐depth penetration in various media, including terrestrial soils (Hostun sand) and well‐characterized planetary soil simulants (LHS‐1 Lunar regolith simulant and MGS‐1 Martian regolith simulant).
Serena Rosa Maria Pirrone, Emanuela Del Dottore, Gunter Just, Barbara Mazzolai, Luc Sibille   +4 more
wiley   +1 more source