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相关概念视频

Multi-input and Multi-variable systems01:22

Multi-input and Multi-variable systems

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Cruise control systems in cars are designed as multi-input systems to maintain a driver's desired speed while compensating for external disturbances such as changes in terrain. The block diagram for a cruise control system typically includes two main inputs: the desired speed set by the driver and any external disturbances, such as the incline of the road. By adjusting the engine throttle, the system maintains the vehicle's speed as close to the desired value as possible.
In the absence...
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Infrared (IR) Spectroscopy: Overview01:09

Infrared (IR) Spectroscopy: Overview

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When electromagnetic radiation passes through a material, atoms or molecules transition from a lower to a higher energy state by absorbing radiation corresponding to the energy difference between the two states. The absorption of infrared (IR) radiation causes transitions between vibrational energy levels in a molecule. Therefore, IR spectroscopy is a useful analytical tool for determining the molecular structure of molecules.
Different compounds display unique properties due to their...
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Absorption of Radiation01:05

Absorption of Radiation

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The rate of heat transfer by emitted radiation is described by the Stefan-Boltzmann law of radiation:
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Temperature Measurement Sites01:14

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A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
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Light Acquisition02:16

Light Acquisition

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In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
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Flame Photometry: Overview01:02

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Flame photometry, also known as flame emission spectrometry, is a technique used for the qualitative and quantitative analysis of elements present in a sample using a flame as the source of excitation energy. The concept of flame photometry was realized in the early 1860s by Kirchhoff and Bunsen, who discovered that specific elements emit characteristic radiation when excited in flames. The first instrument developed for this purpose was used to measure sodium (Na) in plant ash using a Bunsen...
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基于多分支卷积模型的多光谱辐射温度计方法.

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    此摘要是机器生成的。

    这项研究引入了一种使用多分支卷积模型的新型多谱辐射温度计方法. 该方法通过克服排放性挑战,准确地测量各种材料的温度,显示出高的概括能力.

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    科学领域:

    • 热物理学的热物理.
    • 光学工程是指光学工程.
    • 机器学习 机器学习

    背景情况:

    • 多光谱温度测量受到未知的材料辐射率的阻碍.
    • 现有的算法在辐射率变化和广泛的材料适用性方面扎.
    • 精确的温度传感在各种工业和科学应用中至关重要.

    研究的目的:

    • 开发一个强大的多光谱辐射温度测量方法,独立于发射率.
    • 创建一个适用于各种材料的多功能算法.
    • 为了提高非接触式温度测量的准确性和可靠性.

    主要方法:

    • 实施一个改进的多分支卷积神经网络 (CNN).
    • CNN包含温度反转,波长,电压比率,辐射率和参考温度的分支.
    • 利用特征提取和相互作用来准确预测温度.

    主要成果:

    • 模拟实验表明最大绝对误差低于7K.
    • 现实世界的火箭实验显示最大误差为9.13K.
    • 该模型在不同的数据集和条件中表现出强大的概括能力.

    结论:

    • 拟议的方法有效地解决了多光谱温度计中未知发射率的挑战.
    • 多分支CNN模型证明了对各种材料和辐射率模型的广泛适用性.
    • 这项研究为辐射温度计理论和实践的进步提供了新的途径.