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多模式颗粒物质预测:使用移动设备和深度学习模型实现可扩展和高精度空气质量监测

Hirokazu Madokoro1, Stephanie Nix1

  • 1Faculty of Software and Information Science, Iwate Prefectural University, Takizawa 020-0693, Iwate, Japan.

Sensors (Basel, Switzerland)
|July 12, 2025
PubMed
概括

这项研究使用智能手机摄像头和深度学习来预测空气污染 (颗粒物). 移动摄像头设备为环境监测提供了实用,分布式的方法,减少了对传统系统的依赖.

关键词:
对比的语言 图像 预训练移动摄像机 移动摄像机颗粒物质颗粒物质是什么单板电脑是一台单板电脑.变压器的骨干是变压器.

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Linear Approximations01:23

Linear Approximations

For a differentiable function of two variables, linear approximation estimates values near a known point by replacing the curved surface with its tangent plane. Consider the function\begin{equation*}f(x,y)=x^2+3y^2\end{equation*}near the point (2, 1). The exact value at this point is f(2, 1) = 22 + 3(1)2 = 4 + 3 = 7.The linear approximation of f(x, y)) near (a, b) is\begin{equation*}L(x,y)=f(a,b)+f_x(a,b)(x-a)+f_y(a,b)(y-b)\end{equation*}First, compute the partial derivatives: fx(x, y) = 2x and...