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

Applications of Stress01:04

Applications of Stress

400
Consider a structure made of a boom and a rod designed to support a load. These two components are connected by a pin and stabilized by brackets and pins. The boom and the rod are detached from their supports to assess the different stresses imposed on this structure, and a free-body diagram is drawn. Then, all the forces applied, including the load acting on the structure, are identified. The reaction forces exerted on both the boom and the rod are computed using the equilibrium equations.
The...
400
Physiological Foundation of Stress01:24

Physiological Foundation of Stress

157
Stress triggers a coordinated physiological response involving the sympathetic nervous system (SNS) and the hypothalamic-pituitary-adrenal (HPA) axis. This dual activation ensures that the body is prepared for both immediate and prolonged stress management. The process begins with the perception of a stressor. This initial phase activates the SNS, leading to the rapid release of adrenaline (epinephrine) from the adrenal glands.
Role of the Sympathetic Nervous System
Adrenaline triggers the...
157
Psychological Responses to Stress01:20

Psychological Responses to Stress

98
Psychological responses to stress encompass the various cognitive and emotional reactions individuals experience when faced with challenging or threatening situations, such as a job loss. Prolonged exposure to stressors can disturb emotional balance, increasing negative emotions (e.g., anxiety and sadness) and diminishing positive emotions (e.g., joy and satisfaction). These persistent emotional shifts are associated with an increased risk of both physical illness and mental health issues, such...
98
Introduction to Stress and Lifestyle01:27

Introduction to Stress and Lifestyle

177
Stress is a multifaceted response to events perceived as challenging or threatening, highlighting physical, emotional, cognitive, and behavioral reactions. Physically, stress can lead to fatigue, sleep disruptions, and various health issues such as frequent colds, chest pains, and nausea. Emotionally, it can manifest as anxiety, depression, irritability, and anger triggered by both minor and major life events. Cognitively, it may result in difficulty in concentration, memory, and...
177
Components of Stress01:23

Components of Stress

275
Stress analysis under multiple loading conditions is intricate, necessitating a comprehensive grasp of normal and shearing stresses. Consider a small cube at point O, subjected to stress on all six faces, visible or not. Normal stress components σx, σy, σz act perpendicularly to the x, y, and z axes. Shearing stress components τxy and τxz are exerted on faces perpendicular to these axes.
Interestingly, the hidden cube faces also experience these stresses, equal and...
275
Stress Concentrations01:24

Stress Concentrations

374
Stress concentration is when stress intensifies near discontinuities such as holes or abrupt cross-sectional changes in a structural member. This localized stress can often surpass the average stress within the member. The stress distribution in flat bars, either with a circular hole or varying widths connected by fillets, can be determined experimentally using a photoelastic method. The results are based on ratios of geometric parameters like the ratio of the hole's radius to the smaller...
374

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Spatial-temporal graph neural network with autoencoder pretraining for intrusion detection in healthcare IoT ecosystems.

Scientific reports·2026
Same author

Cr(III)-Salen-Catalyzed Enantioselective C3-Aryloxylation of Spiroepoxy Oxindoles.

The Journal of organic chemistry·2026
Same author

Gastrointestinal image classification with GIDNet CNN model and non-linear Tansh activation function.

Computers in biology and medicine·2026
Same author

Advancing cyberbullying detection in low-resource languages: a transformer- stacking framework for Bengali.

Frontiers in artificial intelligence·2026
Same author

Integrative Lifestyle Strategies for Osteoarthritis Management in Post-Menopausal Women: Insights on Exercise and Diet.

Current rheumatology reviews·2026
Same author

An attention enhanced CNN ensemble for interpretable and accurate cotton leaf disease classification.

Scientific reports·2026
Same journal

Reinforcement learning driven edge-cloud coordination for secure and energy efficient IoMT.

Frontiers in digital health·2026
Same journal

Development, feasibility testing and evaluation of a family-oriented mobile application to promote healthy lifestyle in infants and parents during early life: a mixed methods study.

Frontiers in digital health·2026
Same journal

Electronic medical record-generated data use for decision-making and associated factors among healthcare managers in Somali public health facilities: a multicenter cross-sectional study.

Frontiers in digital health·2026
Same journal

Artificial intelligence for predicting and preventing adverse pregnancy outcomes addressing bias and clinical translation.

Frontiers in digital health·2026
Same journal

Human digital twins in personalized and predictive healthcare: a comprehensive review of technologies, applications, and future directions.

Frontiers in digital health·2026
Same journal

Performance of deepseek-R1 and ChatGPT-5.4 thinking in the medical laboratory professional title examination: accuracy, stability, and comparison with interns.

Frontiers in digital health·2026
Ver todos los artículos relacionados

Video Experimental Relacionado

Updated: Sep 9, 2025

Evaluation of Commercial-Off-The-Shelf Wrist Wearables to Estimate Stress on Students
12:51

Evaluation of Commercial-Off-The-Shelf Wrist Wearables to Estimate Stress on Students

Published on: June 16, 2018

7.6K

Investigar modelos de aprendizaje automático ligeros e interpretables para una detección de estrés eficiente y

Debasish Ghose1, Ayan Chatterjee2, Indika A M Balapuwaduge3

  • 1School of Economics, Innovation, and Technology, Kristiania University College, Bergen, Norway.

Frontiers in digital health
|August 29, 2025
PubMed
Resumen
Este resumen es generado por máquina.

Los modelos de aprendizaje automático ligeros detectan con precisión el estrés utilizando características de variabilidad mínima de la frecuencia cardíaca (VRC). El modelo k-vecinos más cercanos (k-NN) logró una precisión del 99,3%, demostrando ser eficiente para aplicaciones de IoT en tiempo real.

Palabras clave:
Dispositivo IoTLos modelos MLInteligencia artificial explicablela saluddetección del estrés

Más Videos Relacionados

Asthma Detection Research Based on Voice Signal Processing and Machine Learning
04:04

Asthma Detection Research Based on Voice Signal Processing and Machine Learning

Published on: July 22, 2025

405
Author Spotlight: Establishing a Rodent Model for Investigating Depression Factors in Traditional Mongolian Medicine
05:56

Author Spotlight: Establishing a Rodent Model for Investigating Depression Factors in Traditional Mongolian Medicine

Published on: October 27, 2023

1.2K

Videos de Experimentos Relacionados

Last Updated: Sep 9, 2025

Evaluation of Commercial-Off-The-Shelf Wrist Wearables to Estimate Stress on Students
12:51

Evaluation of Commercial-Off-The-Shelf Wrist Wearables to Estimate Stress on Students

Published on: June 16, 2018

7.6K
Asthma Detection Research Based on Voice Signal Processing and Machine Learning
04:04

Asthma Detection Research Based on Voice Signal Processing and Machine Learning

Published on: July 22, 2025

405
Author Spotlight: Establishing a Rodent Model for Investigating Depression Factors in Traditional Mongolian Medicine
05:56

Author Spotlight: Establishing a Rodent Model for Investigating Depression Factors in Traditional Mongolian Medicine

Published on: October 27, 2023

1.2K

Área de la Ciencia:

  • Inteligencia computacional
  • Procesamiento de señales biomédicas
  • Aprendizaje automático para la salud

Sus antecedentes:

  • El estrés prolongado afecta negativamente la salud mental y física.
  • La variabilidad de la frecuencia cardíaca (VRC) es un indicador clave para la medición del estrés.
  • La detección precisa del estrés utilizando características limitadas de HRV con aprendizaje automático (ML) es un desafío.

Objetivo del estudio:

  • Desarrollar modelos ML ligeros y eficientes desde el punto de vista computacional para la detección de tensiones utilizando características mínimas de HRV.
  • Permitir el monitoreo de estrés en tiempo real adecuado para el despliegue de Internet de las Cosas (IoT).
  • Evaluar el rendimiento y la interpretabilidad del modelo para aplicaciones prácticas.

Principales métodos:

  • Se utilizó el conjunto de datos SWELL-KW para la formación y evaluación de modelos.
  • Selección eficiente de características y ajuste de hiperparámetros para los modelos ML.
  • Desarrolló y comparó modelos ligeros, incluidos los vecinos k-más cercanos (k-NN) y el árbol de decisión.

Principales resultados:

  • Los modelos ligeros lograron una precisión competitiva con demandas computacionales reducidas.
  • El algoritmo k-NN demostró un rendimiento superior, alcanzando una precisión del 99,3% con solo tres características de HRV.
  • El mejor modelo k-NN mantuvo una precisión del 99.26% en un dispositivo de borde NVIDIA Jetson Orin Nano, entrenando en 31 segundos.

Conclusiones:

  • Los modelos ML ligeros, en particular los k-NN, son eficaces para la detección precisa y eficiente de la tensión de la VRC.
  • El enfoque propuesto es adecuado para el monitoreo de estrés en tiempo real en entornos de IoT con recursos limitados.
  • Las explicaciones independientes del modelo de interpretación local mejoran la comprensión de la detección de estrés basada en ML.