Results 141 to 150 of about 22,182 (296)

THIRD QUANTIZATION IN BERGMANN-WAGONER THEORY

open access: yes, 2008
The Wheeler-DeWitt (WDW) equation is a result of quantization of a geometry and matter ( SECOND QUANTIZATION OF GRAVITY), in this paper we consider the third quantization of a solvable inflationary universe model, i.e..by analogy with the quantum field ...
SÁNCHEZ, RUBÉN, MORA, CÉSAR
core  

Ultrasonic Rainbow: A Meta‐Transducer for Frequency‐Selective Elastic Wave Control via Dithering‐Based Wavenumber Tuning

open access: yesAdvanced Intelligent Systems, EarlyView.
A piezoelectric meta‐transducer generates an ultrasonic rainbow, steering guided elastic waves to different angles according to frequency. A dithering‐based binary electrode design enables a closer realization of the target wavenumber filter, improving directional purity and suppressing unwanted lobes. Numerical and experimental validation demonstrates
Masoud Mohammadgholiha   +5 more
wiley   +1 more source

Hamilton-Jacobi quantization of constrained systems with second-order Lagrangians: Splines in the Euclidean 3-space

open access: yes, 2004
We investigate the path integral quantization of finite-dimensional constrained systems with second-order Lagrangians using the Hamilton-Jacobi method.
Farahat, Naser I.   +2 more
core  

Retinal Vessel Segmentation: A Comprehensive Review From Classical Methods to Deep Learning Advances (1982–2025)

open access: yesAdvanced Intelligent Systems, EarlyView.
Four decades of retinal vessel segmentation research (1982–2025) are synthesized, spanning classical image processing, machine learning, and deep learning paradigms. A meta‐analysis of 428 studies establishes a unified taxonomy and highlights performance trends, generalization capabilities, and clinical relevance.
Avinash Bansal   +6 more
wiley   +1 more source

Input Sparsity‐Aware Computing‐In‐Memory with Bidirectional Conversion‐Skippable Analog‐to‐Digital Converter

open access: yesAdvanced Intelligent Systems, EarlyView.
This article introduces an input sparsity‐aware computing‐in‐memory macro featuring novel bidirectional conversion‐skippable analog‐to‐digital converters. By dynamically adjusting resolution based on element‐level sparsity, the architecture skips redundant most significant bit and least significant bit conversions.
Choongseok Song   +2 more
wiley   +1 more source

The Configuration Interaction Method in the Second Quantization Representation

open access: yes, 1971
The mathematical apparatus of the second quantization is applied to the configuration interaction method. The configurations are treated as a system of particles and holes against the vacuum state built by the closed shell of the ground configuration.
Kruglyak, Yu. A.   +5 more
core  

Explainable AI‐Driven Optimization of Electrode Activation Reduces Power Consumption While Preserving Object Recognition in Retinal Prostheses

open access: yesAdvanced Intelligent Systems, EarlyView.
Explainable artificial intelligence (XAI) guides selective electrode activation in retinal prostheses by emphasizing visually informative regions. XAI‐assisted phosphene generation maintains object recognition performance while significantly reducing stimulation power.
Sein Kim, Hamin Shim, Maesoon Im
wiley   +1 more source

Electroencephalogram‐Driven Recognition of Parkinson's Disease Through a Mycelium‐Inspired Memristive Reservoir Computing Circuit

open access: yesAdvanced Intelligent Systems, EarlyView.
This work presents a bio‐inspired computing framework for Parkinson's disease analog recognition using electroencephalogram signals. Temporally encoded EEG features stimulate a mycelium‐inspired memristive reservoir, where disease‐related patterns emerge through physical spatiotemporal dynamics.
Ioannis K. Chatzipaschalis   +5 more
wiley   +1 more source

Field-Theoretic Weyl Deformation Quantization of Enlarged Poisson Algebras

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2008
C*-algebraic Weyl quantization is extended by allowing also degenerate pre-symplectic forms for the Weyl relations with infinitely many degrees of freedom, and by starting out from enlarged classical Poisson algebras.
Lothar Schlafer   +2 more
doaj  

Second Quantization of the Dirac Equation in Cylindrical Coordinates

open access: yes, 2007
Cylindrical solutions of the Dirac equation have been studied as well as used in a variety of application. However, little attention has been paid to the second quantization in these coordinates.
Balantekin And   +2 more
core  

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