查询词典 uniform distribution

We will see how data can be characterized as observed values of random variables and study three important probability distributions: the uniform distribution, the binomial distribution, and Normal distribution.

我们会看到资料如何表现随机变数观测值的特征，并且研读三种重要的概率分布：均匀概率分布，二项分布与正态分布。

The results point out that the vertical wall rock pressure takes on pinnacle distribution or uniform distribution, and that horizontal pressure takes on entasis distribution.

分析指出，垂直方向围岩压力计算图式可采用均匀分布或"尖峰"形分布，水平方向围岩压力计算图式可采用"鼓肚子"形分布。

According to this understanding, this thesis tries to modify PSO algorithm in order to improve its quality of solutions. The main approches include: using uniform design to ensure the uniform distribution of initial particles in the design space; adding mutation operation to increase the diversity of particles; decreasing the maximum velocity limitation and the velocity inertia automatically to balance the local and the global search efforts; developing a new approach to treat the design variables exceeding the bounds; using extensive local searches to escape local minimum. The overall effect of these approaches can yield better results for most test problems.

有鉴於此，本文针对粒子群演化法之流程参考相关文献并稍作改变，使得粒子群演算法在结果的收敛上更具优势，本文的主要改进的方法包括：应用均匀设计的概念使得初始的粒子可以更均匀地分布在空间上；利用突变增加粒子之间的差异性与多样性；利用适当控制的最大速度限制及惯性权重控制，达到区域搜寻与全域搜寻的效果；应用新的边界处理机制处理设计变数超过上、下限的问题；利用区域强化搜寻针对粒子附近地区，再作进一步的搜索以得到更佳之结果；将各种方法综合后配合粒子群演算法使用，可以得到不错的结果。

Good on a random number generator, including normal, lognormal distribution, uniform distribution of many random distribution...

很好用的随机数产生器，包含正态分布，对数正态分布，均匀分布等好多随机分布的随机数产生方法。

Good on a random number generator, including normal, lognormal distribution, uniform distribution of many random distribution of random selection.

很好用的随机数产生器，包含正态分布，对数正态分布，均匀分布等好多随机分布的随机数产生方法。

Based on the old algorithm, introduce new Linear Feedback Shift Register, new Central Limit Theorem, Maclaurin Equation to generate uniform distribution, gaussian distribution, exponential distribution's random number respectively and analyze them, compares the difference between new algorithm and old algorithm.

在原有算法的基础上，提出了改进型线性反馈移位寄存法、改进型中心极限定理法和麦克劳林展开法，并对其作测试仿真，比较传统算法与改进型算法之间的优缺点。

Uniform distribution of irrigation water is critical for uniform application of fertilizer.

灌溉均匀是施肥均匀的关键。

Compared with non-nanopolyaniline synthesized by conventional emulsion polymerization, nanopolyaniline has the narrow and uniform distribution of particle dimension and the diameter of particle is about 4-5nm,and the conductivity reaches 3.2S·cm-1, which is more than 100 times higher than that of nanopolyaniline;Moreover, it has higher solubility in conventional solvent and the solubility reaches 95% in N-methyl pyrrolidone;what's more ,it has higher crystallinity and more uniform crystal proved by XRD, apparent blue shift indicated by UV, which makes it possible to prepare transparent conductive composite films.

结果表明，微乳液法合成的纳米聚苯胺与常规乳液法合成的非纳米聚苯胺相比，具有明显的优越性：粒径分布窄，95%的在10nm 以下，最大的不超过30nm；电导率较高，达到了3.2S/cm，提高了2 个数量级以上；在有机溶剂中的溶解度较高，其中在N-甲基吡咯烷酮中的溶解率达到了95%；X 射线衍射仪分析表明，纳米聚苯胺结晶度高，晶型更为规整；紫外可见光谱研究发现，纳米聚苯胺在可见光区有明显的蓝移，为制备透明的导电复合膜提供了可能。

Computational results indicate that the distribution of near-field intensity deviated from the uniform distribution and near-field phase approximated the uniphase distribution in the NF and m range studied.

结果表明，在所取的NF范围内近场光场强度的空间分布偏离均匀分布，但相位近似为均匀分布。

It can be used to prepare polyethylene products with uniform granularity, high stack density, and uniform distribution of copolymerized monomers on high-molecular chain.

该催化剂具有制备过程简单。使用本催化剂可以制备颗粒均匀，堆密度高，共聚单体在高分子链上分布均匀的聚乙烯产品。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。