Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Sampling Theorem01:15

Sampling Theorem

1.4K
In signal processing, the analysis of continuous-time signals, denoted as x(t), often involves sampling techniques to convert these signals into discrete-time signals. This process is essential for digital representation and manipulation. A critical component in sampling is the train of impulses, characterized by the sampling interval and the sampling frequency. The relationship between these parameters and the original signal's properties dictates the success of the sampling process.
1.4K
Sampling Methods: Overview01:06

Sampling Methods: Overview

3.6K
A sample refers to a smaller subset representative of a larger population. In analytical chemistry, studying or analyzing an entire population is often impractical or impossible. Therefore, samples are used to draw inferences and generalize the whole population. The sampling method selects individuals or items from a population to create a sample. Standard sampling methods include random, judgemental, systematic, stratified, and cluster sampling. 
In analytical chemistry, the choice of...
3.6K
Upsampling01:22

Upsampling

656
Managing signal sampling rates is essential in digital signal processing to maintain signal integrity. A decimated signal, characterized by a reduced frequency range due to its lower sampling rate, can be upsampled by inserting zeros between each sample. This upsampling process expands the original spectrum and introduces repeated spectral replicas at intervals dictated by the new Nyquist frequency. To refine this zero-inserted sequence, it is passed through a lowpass filter with a cutoff...
656
Sampling Continuous Time Signal01:11

Sampling Continuous Time Signal

775
In signal processing, a continuous-time signal can be sampled using an impulse-train sampling technique, followed by the zero-order hold method. Impulse-train sampling involves the use of a periodic impulse train, which consists of a series of delta functions spaced at regular intervals determined by the sampling period. When a continuous-time signal is multiplied by this impulse train, it generates impulses with amplitudes corresponding to the signal's values at the sampling points.
In the...
775
Sampling Plans01:23

Sampling Plans

1.1K
Sampling is a crucial step in analytical chemistry, allowing researchers to collect representative data from a large population. Common sampling methods include random, judgmental, systematic, stratified, and cluster sampling.
Random sampling is a method where each member of the population has an equal chance of being selected for the sample. It involves selecting individuals randomly, often using random number generators or lottery-type methods. For example, when analyzing the properties of a...
1.1K
Sampling Methods: Sample Types01:18

Sampling Methods: Sample Types

3.4K
Sampling materials are classified into three main types: solid, liquid, and gas.
Solid samples include a variety of substances, such as sediments from water bodies, soil, metals, and biological tissues. Two standard methods for extracting sediments from water bodies are grab sampling and piston coring. Grab sampling involves using a device to collect a discrete sediment sample from the bottom of a water body with minimal disturbance. Grab samples do not always represent the entire area due to...
3.4K

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Consistent inclusion of triple substitutions within a coupled cluster based static quantum embedding theory.

The Journal of chemical physics·2026
Same author

Independent association of leg-height ratio with 15 cardiometabolic diseases.

Cardiovascular diabetology·2026
Same author

Retraction of: Esophageal carcinoma cell-excreted exosomal uc.189 promotes lymphatic metastasis.

Aging·2025
Same author

Editorial: Global infectious disease surveillance technologies and data sharing protocols.

Frontiers in public health·2025
Same author

Optimized Auxiliary Functions for Robust Mitigation of Finite-Size Errors in Periodic Hybrid Density Functional Theory.

Journal of chemical theory and computation·2025
Same author

Renormalization of states and quasiparticles in many-body downfolding.

The Journal of chemical physics·2025
Same journal

Chemotactic self-organization captures the dynamics of mammalian hair follicle patterning.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same journal

Tomographic imaging of superconducting order using particle-hole interference.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same journal

Inhibitory potential of autologous neutralizing antibodies sets quantitative limits on the rebound-competent HIV-1 reservoir.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same journal

Inferring epidemiological parameters under an infectious phylogeography model with visitor dynamics.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same journal

Analytical modeling for suction cup designs for skin-interfaced wearable devices.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same journal

Improving cell-free metabolism through direct integration of artificial respiratory chains.

Proceedings of the National Academy of Sciences of the United States of America·2026
Ver todos los artículos relacionados

Video Experimental Relacionado

Updated: Feb 22, 2026

Lensless Fluorescent Microscopy on a Chip
11:23

Lensless Fluorescent Microscopy on a Chip

Published on: August 17, 2011

18.2K

Aceleración cuántica a nivel de operador del muestreo no log-cóncavo

Jiaqi Leng1,2, Zhiyan Ding2,3, Zherui Chen2

  • 1Simons Institute for the Theory of Computing, University of California, Berkeley, CA 94720.

Proceedings of the National Academy of Sciences of the United States of America
|February 20, 2026
PubMed
Resumen
Este resumen es generado por máquina.

Este estudio presenta un algoritmo cuántico para acelerar el muestreo de distribuciones de probabilidad complejas, ofreciendo mejoras significativas para potenciales no log-cóncavos donde los métodos clásicos fallan. Permite simulaciones más rápidas en campos como la física y el aprendizaje automático.

Palabras clave:
muestreo de Gibbsdinámica de LangevinLaplaciano de Wittenalgoritmos cuánticosdiscretización de valores singulares

Más Videos Relacionados

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
15:06

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle

Published on: January 3, 2016

13.4K
Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

15.1K

Videos de Experimentos Relacionados

Last Updated: Feb 22, 2026

Lensless Fluorescent Microscopy on a Chip
11:23

Lensless Fluorescent Microscopy on a Chip

Published on: August 17, 2011

18.2K
Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
15:06

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle

Published on: January 3, 2016

13.4K
Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

15.1K

Área de la Ciencia:

  • Computación cuántica
  • Física computacional
  • Mecánica estadística
  • Aprendizaje automático

Sus antecedentes:

  • El muestreo de distribuciones de probabilidad es crucial en diversos dominios científicos.
  • Los métodos clásicos como la dinámica de Langevin tienen dificultades con las distribuciones no log-cóncavas, lo que dificulta el rendimiento.
  • Los paisajes energéticos complejos plantean desafíos significativos para un muestreo preciso y eficiente.

Objetivo del estudio:

  • Desarrollar un algoritmo cuántico para acelerar las dinámicas de muestreo en tiempo continuo.
  • Abordar las limitaciones de los métodos de muestreo clásicos en entornos no log-cóncavos.
  • Permitir un muestreo eficiente de paisajes energéticos complejos y escarpados.

Principales métodos:

  • Codificación de la medida de Gibbs objetivo en las amplitudes de los estados cuánticos.
  • Utilización de una factorización de matrices en bloque del operador Laplaciano de Witten.
  • Implementación del muestreo de Gibbs mediante la discretización de valores singulares.
  • Desarrollo de un algoritmo cuántico para la difusión de Langevin de intercambio de réplicas.

Principales resultados:

  • Una aceleración demostrable para una amplia clase de dinámicas de muestreo en tiempo continuo.
  • Hasta una mejora cuántica cuádruple sobre los métodos clásicos basados en Langevin para distribuciones no log-cóncavas.
  • El primer algoritmo cuántico para acelerar la difusión de Langevin de intercambio de réplicas.

Conclusiones:

  • El algoritmo cuántico desarrollado ofrece una ventaja significativa para el muestreo de distribuciones complejas.
  • Este trabajo proporciona una nueva y potente herramienta para simular sistemas en física, química y más allá.
  • La computación cuántica puede superar las limitaciones fundamentales de las técnicas de muestreo clásicas.