查询词典 density distribution

Based on the limited mathematical expectation, the density function, distribution function and other mathematical tools, the impact of the use of different types of deductible and compensation limit on the pure premiums is analysed.

在有限数学期望、密度函数、分布函数等数学工具的基础上，分析了不同类型的免赔额与赔偿限额的同时使用，对纯保费的影响。

In this paper, the theory, algorithm, and experiment of automatic object detection and tracking are studied in depth. It is firstly pointed out that the essential of Mean Shift method is a special Newton-Gaussian method. A new method named Fast Mean Shift is established to stretch the conservative step of Mean Shift method. The convergence and validity of this new method are proved in theory. And it is also proved that the convergence speed of Fast Mean Shift is faster than that of Mean Shift. The contrast experiments of searching the maximum possibility density of random of data sets in plane and 3D space are done. The results show that this new method can reduce the iterations greatly. A new object tracking method based on Fast Mean Shift is built to improve the object tracking performance, which is shown in the face tracking experiment with the tennis sequence provided by the Ohio State University, and the car tracking experiment with the car sequence provided by Kalsruhe University. The face trcking experiment with highly noised images show that the object tracking method based on Fast Mean Shift has strong anti-jamming ability. A new fast color object detection technology based on characteristic color is established, which use characteristic color distribution to compute the characteristic color vector of any area in an image quickly. With the high performance search method, the fast object detection is achieved. At last, using object tracker based on Fast Mean Shift and color object detector based on characteristic color with the Kalman filter, PID controller, searial communication and other technologies, automatic object detection and tracking system with control system is built. The availability and anti-jamming ability of this system are verified by some object detection and tracking tests in different scenes.

本文对目标自动识别与跟踪进行了理论、计算、试验三方面的深入研究，主要包括：首次指出了目标跟踪技术中常用的均值迁移方法的本质为一种特殊的高斯-牛顿方法，改进了均值迁移方法步长取值保守的弱点，建立了快速均值迁移方法，证明了该方法的收敛性、有效性以及收敛速度优于均值迁移方法；进行了平面和3维随机分布数据集的最大概率密度搜索对比试验，试验结果表明，快速均值迁移方法大大减少了迭代次数；建立了基于快速均值迁移的目标跟踪方法，利用俄亥俄州立大学提供的乒乓球序列图像和卡斯鲁厄大学的汽车序列图像，对人脸和汽车目标跟踪性能分别进行了对比试验，并进行了高噪声人脸图像目标跟踪试验，结果表明，基于快速均值迁移的目标跟踪方法有效提高了目标跟踪性能，具有很强的抗干扰能力；建立了一种新型彩色目标自动识别方法，采用特征色彩分布函数实现了对任意图像区域特征色彩矢量的快速计算，建立了高效的搜索方法，实现了彩色目标的快速识别；将基于快速均值迁移方法的目标跟踪方法、基于特征色彩的目标识别方法与卡尔曼滤波、PID控制、串行通讯等技术结合，建立了带有控制系统的快速目标自动识别与跟踪系统，并在不同场景下进行了目标自动识别与跟踪试验，验证了快速目标自动识别与跟踪系统的有效性和抗干扰能力。

This distribution became more serious as the mean packing density increased.

同时发现壳程流动的非均匀性随着组件装填密度的增加而变得更加显著。

Therefore, bean weight can be used to predict egg distribution, especially when the mean egg density is greater than one.

故我们认为用寄主大小来预测四纹豆象产卵分布情形是可行的，特别是要描述多卵豆的分布时，更为准确。

Through simulation, the size of the filter template affecting on filtering imaging is investigated, the filtering effects of second mean filtering method and vector filtering method at the same size of filter template is comparised, the curve distribution of power spectral density of second mean filtering method and vector filtering method is analyzed.

仿真实验研究了滤波模板的大小对滤波效果的影响，比较了在同样模板的选取下向量滤波方法与二次均值滤波法的滤波效果，分析了向量滤波方法与二次均值滤波法的功率谱密度分布。

The effect of molecular weight distribution of the pitch on the formation of the foam was studied qualitatively. The variation of microscopic morphology, crystallite size, the interlayer spacing of microcrystal, and the density of the carbon foam carbonized from 800 to 1400℃ were also investigated.

定性考察了沥青分子量分布对沥青泡沫形成的影响，以及其沥青泡沫在空气中，在800℃~1400℃炭化温度范围炭化得到泡沫炭产品的光学微观形态、微晶及密度等的变化情况。

The minimum power density is 6.5×10^5W cm^(-2) and the maximum scanning speed is 600mmmin^(-1) The distribution of temperature field during the nitriding process is simulated with semi-infinity model.

采用半无限大模型对氮化过程中的温度分布进行了数学模拟，并推导出了温度分布方程。

We obtained the monotone property of the maximum function of Z distribution density function.

其中，a与b是两个正参数，一般对Z分布的研究，主要着重于其概率意义[2]。

Above all,there are some obvious differences among species in distributive density of oil cells, in distribution places of oil cells and mucilage cells and in their sizes. Those structural characteristics are significant for the classification of Lauraceae.

因此，叶片内油细胞的分布密度、油细胞和粘液细胞的分布位置及其大小在种与种之间存在明显的差异，此种结构特征具有分类学上的意义。

The results show that there exist obvious differences of the distribution density of oil cells among the species in the Lauraceae. The presence of oil cells and mucilage cells is found to be a marked anatomical feature of the leaves in most of the plants in the Lauraceae.

利用组织透明法和石蜡制片法对樟科21属、112种、5变种和2变型植物叶中油细胞的分布密度、油细胞与粘液细胞的形态结构及其在叶肉中的具体分布进行了比较研究。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。