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相关概念视频

Internal Energy02:00

Internal Energy

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The total of all possible kinds of energy present in a substance is called the internal energy (U), sometimes symbolized as E. Suppose a system with initial internal energy, Uinitial, undergoes a change in energy (transfer of work or heat), and the final internal energy of the system is Ufinal. Change in internal energy equals the difference between Ufinal and Uinitial.
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Internal Energy01:29

Internal Energy

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The internal energy of a thermodynamic system is the sum of the kinetic and potential energies of all the molecules or entities in the system. The kinetic energy of an individual molecule includes contributions due to its rotation and vibration, as well as its translational energy. The potential energy is associated only with the interactions between one molecule and the other molecules of the system. Neither the system's location nor its motion is of any consequence as far as the internal...
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Internal Receptors01:31

Internal Receptors

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Many cellular signals are hydrophilic and therefore cannot pass through the plasma membrane. However, small or hydrophobic signaling molecules can cross the hydrophobic core of the plasma membrane and bind to internal, or intracellular, receptors that reside within the cell. Many mammalian steroid hormones use this mechanism of cell signaling, as does nitric oxide (NO) gas.
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Physiology of Emotion01:20

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The physiology of emotions is a multifaceted process involving the autonomic nervous system, brain structures, hormones, and neurotransmitters. This intricate interplay dictates how emotions manifest in the body and influence behavior.
Autonomic Nervous System
The autonomic nervous system (ANS) plays a critical role in emotional responses by regulating involuntary physiological functions. It consists of two main components: the sympathetic and parasympathetic systems. The sympathetic system...
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Emotional Expression01:26

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Emotional expression encompasses how individuals convey their emotions through verbal communication and non-verbal cues. These non-verbal actions include facial expressions, body language, and physical gestures, such as frowning or smiling. Among these, facial expressions play a crucial role in emotional expression and are understood universally, indicating a biological basis for how humans communicate emotions.
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Psychologist Paul Ekman identified seven basic...
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Labeling Emotion

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Emotional labeling is a cognitive process that involves identifying and naming one's emotions, such as anger, fear, happiness, or sadness. It allows individuals to recognize and express their internal emotional states, a critical aspect of emotional regulation and communication. Labeling emotions requires more than mere recognition; it also involves drawing upon memory and contextual cues to understand the current situation and apply a corresponding emotional label. For instance, feeling...
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Author Spotlight: Efficient Image Recognition Using Directional Gradient Histogram Technique and Support Vector Machines
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一个基于物联网的智能情绪识别系统,通过使用身体内部参数来识别情绪.

Tayyaba Rashid1, Imran Sarwar Bajwa2, Jungsuk Kim3

  • 1The Islamia University of Bahawalpur, Bahawalpur, Pakistan. Tayyaba.Rashid@iub.edu.pk.

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这项研究证明了通过物联网 (IoT) 框架使用生理信号进行有效的情绪识别. 随机森林算法实现了高精度,验证了实时情绪检测的新方法.

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情绪识别 情绪识别身体内部参数 身体内部参数物联网 (IoT) 的物联网 (IoT) 的物联网.机器学习是机器学习.智能情绪识别系统 (SERS) 是一种智能情绪识别系统.

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科学领域:

  • 生物医学工程 生物医学工程
  • 机器学习 机器学习
  • 人与计算机的交互

背景情况:

  • 使用生理信号识别情绪对于心理健康监测和压力管理至关重要.
  • 现有的方法往往缺乏实时功能或依赖于侵入性技术.
  • 物联网 (IoT) 的整合为非侵入性,实时数据采集提供了一个有希望的途径.

研究的目的:

  • 开发和验证一个新的框架来识别六种情绪状态 (中性,快乐,悲伤,恐惧,愤怒,惊喜) 使用生理信号.
  • 评估各种机器学习算法对情绪分类的性能.
  • 通过内部和外部验证来评估拟议系统的稳定性和通用性.

主要方法:

  • 实时生理数据 (血压,氧和,血糖,心率,体温) 采集使用物联网 (IoT) 启用框架.
  • 通过实验评估了11种不同的机器学习分类算法.
  • 通过k-fold交叉检查进行内部验证,并使用DEAP情感任务进行外部验证.

主要成果:

  • 随机森林算法以90.56%的准确性和93.34%的F1得分表现出卓越的性能.
  • 通过k倍交叉检查进行内部验证,精度提高到93.18%.
  • 使用DEAP任务的外部验证实现了约94%的集体准确度,在所有情感类别中获得了高精度,回忆和F1分数.

结论:

  • 生理信号,加上物联网和机器学习,为实时情绪识别提供了有效和准确的框架.
  • 设计的方法是稳健的,并且很好地概括,验证了所选生理特征的有效性.
  • 这项研究为医疗保健,可穿戴设备和个性化用户体验中的非侵入性情绪识别系统铺平了道路.