Results 131 to 140 of about 21,702 (292)
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT This paper presents a Physics‐Informed Koopman Operator (PIKO) framework integrated with a discrete‐time Sequential Action Control (SAC) for real‐time, decentralized control of a modular aerial parcel delivery robot composed of multiple independently actuated propeller modules.
Archit Krishna Kamath +2 more
wiley +1 more source
Estimating the critical angle of top near‐surface layers on the Moon
Near Surface Geophysics, EarlyView.Abstract Near‐surface characterization of the lunar subsurface is essential for future exploration and infrastructure development, particularly for the construction of underground habitats that provide protection against radiation and micrometeorites. However, conventional seismic approaches for estimating subsurface properties typically rely on prior ...
Nelson Ricardo Coelho Flores Zuniga +1 more
wiley +1 more source
A non linear stochastic differential equation involving Hilbert transform [PDF]
this paper is existence and uniqueness for the strong solution of (1.10). As B. Roynette and P. Vallois in their study of Burgers equation for example (see [6]), we can separate the unknowns X and u. We first find u and replace this function in the above
Emmanuel Cépa +4 more
core
New views of some invariants associated with the Cartesian 2D velocity gradient tensor
Quarterly Journal of the Royal Meteorological Society, EarlyView.Vorticity and divergence of horizontal flow are fundamental quantities in meteorology; both are linear functions of the four elements of the 2D velocity gradient tensor and both are formally unchanged under coordinate rotation. We explore four quadratic functions of the elements that are geometrically invariant in this sense, finding some novel ...
I. Roulstone, S. A. Clough, A. A. White
wiley +1 more source
Comments on Hilbert Transform Based Signal Analysis [PDF]
, 2004 The use of the Hilbert transform for time/frequency analysis of signals is briefly considered. While the Hilbert transform is based on arbitrary continuous signals, most practical signals are digitially sampled and time-limited.
Long, David G.
core +1 more source
Social Sustainability in Circular Bioeconomy Business Models: Insights From Argentina
Sustainable Development, EarlyView.ABSTRACT Research on circular bioeconomy business models (CBEBM) has largely prioritised environmental and economic aspects, leaving out the social pillar. To address this gap, this paper analyses to what extent and in what ways social sustainability is integrated into CBEBM, based on 12 cases from northern Argentina, a region with high potential for ...
Celina N. Amato +2 more
wiley +1 more source
IEEE Photonics JournalThe Hilbert transform can resample the signal to compensate for the nonlinear frequency sweeping phenomenon and precisely measure a distance and velocity through frequency-modulated continuous-wave (FMCW).
Ting-Qing Liao +3 more
doaj +1 more source
AN INEQUALITY FOR THE HILBERT TRANSFORM [PDF]
Proceedings of the National Academy of Sciences, 1968 openaire +6 more sources
Computing the Hilbert transform and its inverse [PDF]
, 2009 We construct a new method for approximating Hilbert transforms and their inverse throughout the complex plane. Both problems can be formulated as Riemann-Hilbert problems via Plemelj's lemma.
Olver, Sheehan
core +1 more source
Small, EarlyView.Ultraviolet photoacoustic microscopy enables label‐free visualization of nuclear morphology in intact human brain organoids. By exploiting endogenous nucleic acid absorption at 266 nm, this approach resolves individual nuclei without staining or sectioning.
Hyunjun Kye +5 more
wiley +1 more source