Results 31 to 40 of about 1,389 (159)

On the Proper Treatment of Dynamics in Cognitive Science

open access: yesTopics in Cognitive Science, EarlyView., 2023
Abstract This essay examines the relevance of dynamical ideas for cognitive science. On its own, the mere mathematical idea of a dynamical system is too weak to serve as a scientific theory of anything, and dynamical approaches within cognitive science are too rich and varied to be subsumed under a single “dynamical hypothesis.” Instead, after first ...
Randall D. Beer
wiley   +1 more source

Exploration of CPT violation via time-dependent geometric quantities embedded in neutrino oscillation through fluctuating matter

open access: yesNuclear Physics B, 2017
We propose a new approach to explore CPT violation of neutrino oscillations through a fluctuating matter based on time-dependent geometric quantities. By mapping the neutrino oscillations onto a Poincaré sphere structure, we obtain an analytic solution ...
Zisheng Wang, Hui Pan
doaj   +1 more source

Stress Direction Measurement Based on Polarization State in Optical Fibers Using the Quaternion Method

open access: yesIEEE Photonics Journal, 2017
The state of polarization (SOP) in a polarization-maintaining fiber subjected to external stress is studied using the quaternion method. The stress principal axis on the Poincare sphere is independent of intrinsic birefringence, but has a linear ...
Zejia Huang, Chongqing Wu, Zhi Wang
doaj   +1 more source

Coherent full polarization control based on bound states in the continuum

open access: yesNature Communications, 2022
Polarization control is of paramount importance for various applications. Here, the authors enable extreme control over light polarization spanning the entire Poincaré sphere by combining coherent control of wave phenomena and the physics of bound states
Ming Kang   +7 more
doaj   +1 more source

Magnetic X‐ray techniques

open access: yesMajor Reference Works, Page 169-176., 2023
International Tables for Crystallography is the definitive resource and reference work for crystallography and structural science.

Each of the eight volumes in the series contains articles and tables of data relevant to crystallographic research and to applications of crystallographic methods in all sciences concerned with the ...
Gerrit van der Laan C. Chantler   +2 more
wiley  

+1 more source

Une histoire de la famille Poincaré (xviie-xxe siècles)

open access: yesPhilosophia Scientiæ, 2023
The Poincaré family has its roots in Lorraine, in the departments of Meurthe-et-Moselle, Meuse and Vosges. Arrancy-sur-Crusne, Bar-le-Duc, Landaville, Longuyon, Lunéville, Nancy, Neufchâteau, Remenoncourt, Xirocourt are among of the towns and villages ...
Laurent Rollet
doaj   +1 more source

Random Motions at Finite Velocity on Non-Euclidean Spaces

open access: yesMathematics, 2022
In this paper, random motions at finite velocity on the Poincaré half-plane and on the unit-radius sphere are studied. The moving particle at each Poisson event chooses a uniformly distributed direction independent of the previous evolution. This implies
Francesco Cybo Ottone, Enzo Orsingher
doaj   +1 more source

Probing non-classicality of primordial gravitational waves and magnetic field through quantum Poincare sphere

open access: yesPhysics Letters B, 2022
The universe is believed to be originated from a quantum state. However, defining measurable quantities for the quantum properties in the present universe has gained interest recently.
Debaprasad Maity, Sourav Pal
doaj   +1 more source

Revisiting Poincaré Sphere and Pauli Algebra in Polarization Optics

open access: yesPhotonics
We present one of the main lines of development of Poincaré sphere representation in polarization optics, by using largely some of our contributions in the field.
Tiberiu Tudor, Gabriel Voitcu
doaj   +1 more source

Generation of Vector Vortex Beams Based on the Optical Integration of Dynamic Phase and Geometric Phase

open access: yesPhotonics, 2023
The phase and polarization of electromagnetic waves can be conveniently manipulated by the dynamic phase and geometric phase elements. Here, we propose a compact optical integration of dynamic phase and geometric phase to generate arbitrary vector vortex
Kuiming Zeng   +3 more
doaj   +1 more source

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