阶数

Then the spatial localization of the main well-known visual neuron's receptive field models such as DOG function, LOG function, higher order derivatives of Gaussian functions and 1—D, 2—D Gabot function models is quantitatively analysed.

如对通常被作为建立模型的主要根据的&最优的空间定域性&判据的物理意义和适用性也没有得到深入的论证，而且已有的主要几类感受野模型，如DOG函数、LOG函数、高斯函数的高阶导数和一维、二维Gabor函数等模型在空间分布形态上难以准确反映系统中神经元感受野的形态和信息处理机制等等。

The temperature curve of flue gas was fitted by the least square methods during the sintering process, and then 4 flexions of the temperature curve were calculated by solving a two-order derivative of the temperature curve.

提出利用最小二乘法拟合烧结废气温度曲线，求曲线方程的二阶导数计算出烧结废气温度的四个拐点。

Two edge detection operators of second de ivative model, the discrete Laplacian of Gaussian and Laplacian of binomial distribution operators are introduced in this paper.

摘要本文首先导入了离散的高斯-拉普拉斯及二项分布--拉普拉斯两种二阶导数型边缘检测算子。

The objects of study in this paper are some dissipativeSchrodinger equations,including a third order nonlinear Schrodinger equation with fiberloss term which derives from the propagation of optical soliton in a monomode fiber,theweakly damped Schrodinger equation in dimension three,the nonautonomous Ginzburg-Laudau equation and so on.

本学位论文的研究对象是一些耗散型的非线性〓方程，包括描述单模光纤中光孤立子传播的三阶〓方程，三维弱阻尼〓方程和非自治Ginzburg-Landau方程等，研究内容涉及这些方程的整体解的存在唯一性，整体吸引子的存在性，吸引子的正则性，吸引子的维数估计，吸引子的流形逼近，周期解和全局周期吸引子的存在等等。

According to the objective of third-order derivative related to torsions, the formula to calculate the cubic optimized Hermite interpolation curves is given. And then we propose a new method to construct curves.

如果以与挠率有关的三阶导数为目标，给出优化三次Hermite曲线的计算公式，从而提出一种新的曲线构造方法。

Domain squatters are auctioning off PS3 pre-order related web domain names for hundreds to thousands of dollars.

域寮屋拍卖PS3的前阶相关网站域名为数百至数千美元。

This paper presents a new order-selection algorithm for exponentially damped sinusoids model based on subspace and structured total least norm method.

本文针对指数阻尼正弦信号模型提出了一种新的基于子空间和结构总体最小范数的阶选择算法。

Both the wave number and the absorbing coefficient of the scatterers are reconstructed.

介绍了吸收型散射体的Rytov二阶近似重建演算法，重建了散射体内部的波数和吸收系数。

Applied the simulation result to a profiling machine,it is proved to produce the same result in reality.

但在许多实际问题中被控对象的状态并不是可以全部获取的，故早些时候的MRACS设计方案都采用微分器来产生对象输出的各阶导数。

Starting with the zenith, a series of star fields at different altitude are observed by a telescope with larger field of view, the derivatives of various orders are calculated at different zenith distances, and finally the observational atmospheric refraction can be obtained by numerical integration.

利用一台较大视场的望远镜从天顶开始，在不同高度上对星空作一系列观测，计算不同天顶距处大气折射函数的各阶导数，最后经数值积分可给出大气折射实测值。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。