边缘密度

The Airy function is used to calculate the plasma impedance and the grill-plasma scattering matrix is deduced, then the coupling properties of the HT-7 LHCD MJ launcher are studied with the antenna scattering matrix and the grill-plasma scattering matrix based on the liner coupling theory. The average power reflection coefficient, directivity, power spectrum are obtained for different edge plasma densities and for different phasings between main waveguides.

采用线型耦合理论，用艾黎函数计算了等离子体阻抗，推导出常规波导阵对等离子体的散射矩阵，并利用它和天线自身的散射矩阵研究了HT-7装置低杂波多结波导阵天线的耦合特性；计算了其平均功率反射系数、方向性系数和功率谱与等离子体边缘密度和主波导相位差等参数的关系。

The results of experiments on a great deal of image sequences of closely packed particles indicate that, for closely packed aggregates particles, quite reasonable estimates of number of particles or average size often arise from the method based on the edge density.

通过对大量颗粒图像进行的实验，特别是岩石骨料图像序列的实验结果显示，对于紧凑型的石料颗粒，采用基于边缘密度的方法检测颗粒数量或者平均尺寸常常可以收到相当好的效果。

By the geometric probability model,the intuitionistic method is provided for the marginal density function and conditional probability density function .

利用几何概型得出均匀分布的边缘密度函数和条件概率密度函数的直观求法。

Therefore, based on analysis the relation of edge density distribution and the ratio, an adaptive multiscale edge detection method is proposed.

基于这个比值与边缘密度分布关系，提出了基于区域能量的自适应多尺度边缘检测方法。

Supposeis two-dimension random variable, is unity density function and marginal density function leave each other, then sufficient and necessary condition for independence of and is: for all real values ,there are .

Theorem 3.3 设是二维连续型随机变量，分别是联合密度函数与边缘密度函数，则相互独立的充要条件是：对任意的实数，都有。

For the joint density function of 2-D continuous random variables, a new function can be obtained by upper limit-variable integral, and then, by normalization of the new function according to the property of density functions, a general marginal density function was constructed.

对二维连续型随机变量的联合密度函数，在一定要求下变上限积分得到新函数，依据密度函数性质进行规范化，从而构造出一个广义的边缘密度函数。

Among them, foliage forest and bamboo grove mottling density and mottling edge density value very big, the showing landscape fragmentation degree is high.

其中，阔叶林和竹林的斑块密度和斑块边缘密度值很大，说明景观破碎化程度高。

Results The main CT finds were as follow:①Bilaterial margins of the lesion were perpendicular to pleura with a straight cut edge presenting a square sign;②The density at the central area,some-times presenting a halo-like apperance;③Irre-gular or spiculate margins with illdefined outline could be seen;④There was extensive pleural thickening involving interlobar fissure as a response to inflamation;⑤There were small patches of slightly high density and intensified vascular markings surrounding the lesions;⑥After short-term anti-inflam-matory therrapy,most lesions were obviously reduced in size.

结果 26例球形肺炎的主要CT表现为：①邻近胸膜病变两侧缘垂直于胸膜呈刀切样平直边缘，病变呈方形；②病变中央密度高，边缘密度低，显示晕圈状改变；③病变边缘可不规则，有锯齿状改变且较模糊；④周围胸膜反应显著，有较广泛增厚；⑤病变周围血管纹理增多、增粗、扭曲，但无僵直和受牵拉；⑥抗炎治疗后病变明显吸收缩小。

The distribution of medusae on the colony is not even, with very low densities on the margin of the colony, but high densities on the middle portion.

另外水母体在群体骨骼的分布并非均匀分布，在群体骨骼的边缘密度很低，而中段位置密度较高。

In this paper, it is shown that the increment of the plasma confinement time without consideration of radiation losses is a good scale for evaluating the plasma confinement improvement during the L-H like transition induced by electrode bias in tokamaks, if the ratio of the radiation power to the total loss power in the transition changes evidently.

辐射下降表明进入等离子体的中性粒子通量减少。这是中性粒子再循环的减小而造成的。同时，边缘密度和边缘温度下降，中心温度上升，约束得到改善，能量约束时间增加。径向电场是控制托卡马克等离子体从L模过渡到H模的关键因素。如果径向电场足够强，极向ExB旋转产生很大的剪切，剪切能够抑制边缘湍流1j。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。