查询词典 probability field

In the first stage, we assume that the probability that a given team wins is a random sample from a beta distribution with parameters based on the relative strength variable and the home field advantage variable.

在第一阶段中，我们评估队伍得胜的概率是来自一个参数基於相对实力变数与主场优势变数的beta分布的随机抽样。

The probability distribution function G of particle number N^＋ is deduced on the basis of the Canonical partition function Z of an ideal Fermi gas（ The orbital motion of the fermi- ons is not considered） in weak magnetic field.

根据弱磁场中理想费米气体的正则配分函数Z，导出粒子数N＋的几率分布函数G。

PSO is a population-based optimization algorithm, which mimics the social behavior of animals in a flock. It makes use of individual and group memory to update each particle position allowing global and local search optimization. The objective function considered was the total weight of the structure subjected to stresses, displacements and forces constraints. The effects of the parameters were investigated as well and such combination of tuning parameters promote a better global search behavior avoiding premature convergence while rapidly converging to the optimal solution. Results showed the effectiveness of the proposed method by comparing with ANSYS Design Optimization Tool (zero-order method). The PSO with the tuning parameters makes it an ideal method for offshore wind turbines foundations optimization tasks.(2) A reliability analysis method for pile foundation bearing axial loads based PSOThe performance function of pile foundation's axially bearing capacity sometimes is nonlinear and complex, on the basis of geometric meaning of structural reliability index, an optimum model with PSO for structural reliability analysis under arbitrary random variables was established, The PSO algorithm is very efficient to solve global optimization problemsIts use in structural reliability field presents not only the advantage of its facility of implementation, but also the possibility to obtain the design point and the failure probability with a good accuracy. In addition, PSO is a zero order algorithm, for no derivative is necessary for its implementation.

本文的研究针对桩式海上风机基础结构的特点，在国内外有关研究成果的基础上对海上风机基础结构优化设计理论和可靠度方法一些相关问题进行了较为深入的研究，具体做了以下几个方面的工作：(1)基于粒子群优化的桩式海上风机基础确定性优化设计方法桩式海上风机基础的优化设计是一个复杂的、非线性约束的优化问题，针对传统的基于梯度信息的优化方法在处理非线性问题中易陷入局部最优解的问题，本文将一种耦合惩罚函数的PSO算法引入到海上风机基础结构概念设计中，PSO算法是从群体动物聚集觅食这一活动中受到启发而发展的，该算法利用个体和群体的信息共享不断改进自身的位置从而进行局部和全局最优搜索，本文中以桩和三脚架连接段直径及壁厚为设计变量，以基础总重量作为优化的目标函数，在给定的约束条件下建立了三脚架基础优化数学模型，另外本文还研究了PSO参数变化对结果的影响，协调的参数组合可以避免陷入早熟收敛而能够快速的获得全局的最优解，通过与ANSYS优化模块的计算结果比较验证了该方法的有效性，本方法为海上风机基础的确定性设计提供了一条有效的途径。

The second component of this thesis is about the setup of oriented molecule photodissociation and the theoretical treatment. We primarily discussed the steric distribution, the probability of electron transition and the angular distribution of photofragment of the molecules in orientation field.

论文的第二部分是我们建造的利用Brute-force场使分子取向的光解实验装置和相应的理论处理，主要讨论了分子在取向电场中的空间排布、电子跃迁、和光解碎片的角分布。

The definition and characters of Double-module quadratic residue is discussed in this paper,The arithmetic for choosing base point of Elliptic curve cryptosystem in optimal extension field is worked out and proven mathematically,moreover,the successful probability is also provided.

本文讨论了重模二次剩余的定义、性质，完整地设计出选取最优扩域上的椭圆曲线密码系统的基点的算法，并给出了选取成功的概率和相关数学证明。

With changing external magnetic field angle, the intensity of Rashba spin-orbit interaction is related to oscillation frequency of transmission probability.

外加磁场角度连续变化时，Rashba自旋轨道耦合强度或外加磁场强度均与透射概率的振荡频率相关。

According to the self-organized criticality of complex power system, based on the theory of statistics and probability, an effective method to determine the blackouts caused by power grid cascading failures is proposed by using the theorem of maximum attraction field of extreme value distribution.

针对复杂电力系统的自组织临界性特点，基于概率统计基本理论，利用极值分布的最大吸引场定理提出一种分析电网连锁故障大停电事故的有效方法。

In Jiangsu Province promulgated "Foreign construction firms, construction management provisions into" requests, only enterprises in the province failed to meet the tender requirements, in order to allow foreign enterprises Senate bid; Taiyuan City, Shanxi Province and Taiyuan city where received "excellent project manager cards," in large, plus five hours in the field Accreditation of plus 2 hours lower probability of successful enterprise field; Shenzhen, Shanghai and other cities issued documents, only registered enterprises are eligible in the local tender for foreign enterprises in the past two years has stopped registration procedures.

在江苏省颁布的"省外施工企业进省施工管理规定"中要求，只有在省内企业满足不了招标要求时，才允许省外企业参中投标；太原市规定，凡在山西省或太原市领到"优秀项目经理证"的，在评标中加5分，在外地领证的加2分，降低外地企业的中标机率；深圳、上海等城市颁布文件，只有在当地注册的企业才有资格投标，近两年已停止办理外地企业注册登记手续。

Meanwhile, for the characteristics of plant disease spot, segmentation model was created by utilizing the local correlated characteristic of Markov random field and linear stationary auto-regression model formed by Gauss distribution, and self-adaptive segmentation of plant disease spot was realized through optimizing the model with improved ant colony algorithm and maximum a posteriori probability estimation of Gauss-Markov random field.

同时，利用Markov随机场的局部相关特性并结合Causs分布组成线性平稳自回归模型，针对植物病斑特征建立分割模型。最后，采用改进型蚁群算法对其进行优化，并结合Gauss-Markov随机场最大后验概率估计，实现对植物病斑的自适应分割。

In order to establish the complete dynamic simulation model for the heat recovery steam generator and develop an advanced drum level controller, the methods of probability and time series were used to analyze the field data on drum level sloshing noise. The mean value of the drum level was removed and the field data was de-trended to get the true sloshing noise. Meantime, the AR model was set up for the drum level sloshing noise, and simulation results show that the model realizes matching simulation of the drum level noise signals in the power spectrum. The model can also match the drum level noise successfully in the time domain.

为建立完整的余热锅炉系统动态仿真模型，并基于此模型开发先进水位控制器，采用概率统计和时间序列分析的方法，对现场采集的汽包水位晃荡噪声信号进行了分析，去除汽包水位均值和趋势以获得真实的汽包水位晃荡噪声，建立了相应的汽包水位晃荡噪声仿真AR模型；模型的仿真结果表明：AR模型从功率谱上对信号数据进行了匹配模拟，且使用该模型作为噪声模块在时域上对汽包水位晃荡噪声信号进行了成功匹配。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。