Results 21 to 30 of about 306,696 (351)
Advanced Engineering Materials, EarlyView., 2023 This study aims to explore the feasibility of using a structure inspired by the features of horsetail and human spine as the potential helmet liner, targeting at mitigation of acceleration‐induced injuries. A parametric study is conducted to investigate the effect of individual geometrical variables in the design, indicating its capability to reduce ...
Bing Leng +3 more
wiley +1 more source
Frontiers in Astronomy and Space Sciences, 2016 Isolated episodes of heart rhythm disorders have been reported during 40 years of space flight, triggering research to evaluate the risk of developing life-threatening arrhythmias induced by prolonged exposure to weightlessness.
Enrico Gianluca Caiani +8 more
doaj +1 more source
Asymptotic behavior of a stationary silo with absorbing walls [PDF]
J. Statist. Phys. 106 (2002), no. 3-4, 521--546, 2001 We study the nearest neighbors one dimensional uniform q-model of force fluctuations in bead packs [Coppersmith et al (1996)], a stochastic model to simulate the stress of granular media in two dimensional silos. The vertical coordinate plays the role of time, and the horizontal coordinate the role of space.
arxiv +1 more source
Advanced Engineering Materials, EarlyView., 2023 A novel method for tracking structural changes in gels using widely accessible microcomputed tomography is presented and validated for various hydro‐, alco‐, and aerogels. The core idea of the method is to track positions of micrometer‐sized tracer particles entrapped in the gel and relate them to the density of the gel network.
Anja Hajnal +3 more
wiley +1 more source
Motion control research of underwater spherical robot
Systems Science & Control Engineering, 2018 Underwater spherical robot motion control can be used to simulate satellite motion control under weightlessness. In this paper, firstly the motion equation of spherical robot is established by force analysis.
Peilong Li, Lei Wang, Wenwen Zhang
doaj +1 more source
Dry Immersion as a Ground-Based Model of Microgravity Physiological Effects
Frontiers in Physiology, 2019 Dry immersion (DI) is one of the most widely used ground models of microgravity. DI accurately and rapidly reproduces most of physiological effects of short-term space flights.
Elena Tomilovskaya +4 more
doaj +1 more source
Homoclinic, Subharmonic and Superharmonic Bifurcations for a Pendulum with Periodically Varying Length [PDF]
, 2012 Dynamic behavior of a weightless rod with a point mass sliding along the rod axis according to periodic law is studied. This is the simplest model of child's swing. Melnikov's analysis is carried out to find bifurcations of homoclinic, subharmonic oscillatory, and subharmonic rotational orbits.
arxiv +1 more source
BMC Genomics, 2012 Background Many biological systems respond to the presence or absence of gravity. Since experiments performed in space are expensive and can only be undertaken infrequently, Earth-based simulation techniques are used to investigate the biological ...
Herranz Raul +9 more
doaj +1 more source
Memory via Temporal Delays in weightless Spiking Neural Network [PDF]
arXiv, 2022 A common view in the neuroscience community is that memory is encoded in the connection strength between neurons. This perception led artificial neural network models to focus on connection weights as the key variables to modulate learning. In this paper, we present a prototype for weightless spiking neural networks that can perform a simple ...
arxiv
Weightless neural network parameters and architecture selection in a quantum computer [PDF]
Neurocomputing, Volume 183, 26 March 2016, Pages 13-22, 2016 Training artificial neural networks requires a tedious empirical evaluation to determine a suitable neural network architecture. To avoid this empirical process several techniques have been proposed to automatise the architecture selection process.
arxiv +1 more source