Results 71 to 80 of about 1,389 (159)

Electric-magnetic geometric phase

open access: yesPhysical Review Research
Geometric phases play an enormous role in optics and are generally associated with the evolution of light's polarization state on the Poincaré sphere, or its spin on the sphere of spin directions.
Alex J. Vernon, Konstantin Y. Bliokh
doaj   +1 more source

PHYSICAL SPACE AND ABSTRACT SPACES—Klein Space, Poincaré Space and the Stereographic Projection

open access: yesPhotonics
In this paper we compare the rotation of a rigid body in the real three-dimensional Euclidean space E3 and its representation in the complex plane (Klein space), on one hand, with the transformation of polarization states of light (SOPs) by the phase ...
Tiberiu Tudor
doaj   +1 more source

Frequency‐Domain Analysis of External Signal Propagation Through Sliding Mode Control Systems With Dynamic Actuators

open access: yesInternational Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT The importance of frequency domain methods in analysis and design of sliding mode (SM) control systems is mostly associated with chattering, where the advantages of these methods over state‐space and Lyapunov's methods are quite obvious.
I. M. Boiko
wiley   +1 more source

Large‐Area Atomically Flat Monocrystalline Gold Flakes: Recent Advances, Applications, and Future Potential

open access: yesSmall, EarlyView.
This review surveys large‐area monocrystalline gold flakes, covering synthesis, growth mechanisms, and structural properties. It highlights their role as atomically flat, highly conductive platforms for precise nanostructuring, enabling applications such as plasmonics, sensing, and nanoelectronics.
Amro O. Sweedan   +3 more
wiley   +1 more source

Quantum field theory for coherent photons: isomorphism between Stokes parameters and spin expectation values

open access: yesFrontiers in Physics
Stokes parameters (S) on the Poincaré sphere are very useful values to describe the polarisation state of photons. However, the fundamental principle on the nature of polarisation is not completely understood, yet, because we have no concrete consensus ...
Shinichi Saito
doaj   +1 more source

Heart‐Rate Variability and Its Role in Non‐Cardiac Surgery Perioperative Care: Scoping Review

open access: yesANZ Journal of Surgery, EarlyView.
ABSTRACT Background Heart rate variability (HRV) is a non‐invasive method of assessing autonomic function. Those with autonomic dysfunction may be at heightened risk of peri‐operative complications due to sympatho‐parasympathetic imbalance. This review summarises the clinical applications of HRV, approaches to how it is measured, and its role in ...
Reuben Veysey‐Smith   +3 more
wiley   +1 more source

Establishing Shape Correspondences: A Survey

open access: yesComputer Graphics Forum, EarlyView.
Abstract Shape correspondence between surfaces in 3D is a central problem in geometry processing, concerned with establishing meaningful relations between surfaces. While all correspondence problems share this goal, specific formulations can differ significantly: Downstream applications require certain properties that correspondences must satisfy ...
A. Heuschling, H. Meinhold, L. Kobbelt
wiley   +1 more source

Numerical Study of Polarization Dynamics in Optical Fibers with a Harmonically Rotating Birefringence Axis using Stokes Vectors Approach [PDF]

open access: yesفیزیک کاربردی ایران
The control and analysis of polarization dynamics in optical fibers in the presence of birefringence are important, particularly for sensitive applications such as quantum communications and optical sensors.
Somaye Zare   +2 more
doaj   +1 more source

Scalable Computation of Topological Abstractions for Scalar Data

open access: yesComputer Graphics Forum, EarlyView.
Abstract Topological data analysis has become an important tool for large scale scalar data analysis and visualization, efficiently extracting the inherent structure and features of interest of the data. However, with growing dataset sizes and complexity, it is increasingly becoming infeasible to compute topological abstractions of interest in serial ...
M. Will   +6 more
wiley   +1 more source

Modelling the time‐resolved modulations of cardiac activity in rats: A study on pharmacological autonomic stimulation

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Time‐resolved estimation of cardiac rhythmicity parameters. A pipeline is shown for the estimation of the fluctuating cardiac parameters, based on the Poincaré plot. The Poincaré plot illustrates the successive changes in interbeat intervals (IBI).
Diego Candia‐Rivera   +3 more
wiley   +1 more source

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