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The simulation results show that when preheated air temperature increases the maximum temperature gets larger, the temperature gradient becomes lower and the flame length longer. In this paper, an automatic approach for thresholding based on gray level gradient co occurrence matrix model and the maximum entropy principles is proposed. In this paper, we prove a theorem on the convergence of the gradient of K-S function to the subdifferential of corresponding maximum function. 该 方法 利用 最大 似然 准则 建立 目标 函数 ,同时利用 非线性 共轭 梯度 法 来优化 求解 目标函数。ĭue to cardiac deformation and blood flowing, weak edges, local gradient maximum regions and artifacts are found in the MRI images. The objective function was established based on the maximum likelihood rule, which was solved by nonlinear conjugate gradient method. Moreover the isogram chart of countrywide maximum temperature gradient of concrete pavements with frequency of 2% is plotted. gradient computation is described and the formula for computation of maximum gradient is derived.
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The traditional MGD ( maximum gradient difference) algorithm based on the order of the image pixels matrix has the shortcomings of the large operation measure and long-time running. It is used for extracting linear feature from magnetic and gravity data.
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温度 垂直 梯度 越大 , 它 在垂直方向 上 阻碍 上层 海水 的 热量 往 深层 扩散 的 能力 就 越 强 。Ī maximum gradient tracing and rotation transformation approach is presented in this paper. The greater the vertical maximum gradient is, the more powerful its capability to block vertical heat diffusion from upper water layer to deep water layer.