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Based on the higher mathematics method proved inequalities are summarized, and the proposed using the function extreme value and the monotonicity and concave and convex function sex, and mean value theorem, Taylor formula, integral these common higher mathematics method, combining with concrete examples of each kind of method to solve the problems for type, and the key problem of the specific steps, and points out that the inequality proof of higher mathematics method used properly, improve the difficult easy to ability to solve problems.

本文对不等式证明中的高等数学方法作了归纳总结,提出了利用函数的单调性,极值与最值,函数凹凸性,中值定理,泰勒公式,积分这些常用的高等数学方法,并结合具体实例阐述了每一种方法的适用类型、解决问题的关键和证明问题的具体步骤,指出在不等式证明中恰当地运用高等数学方法可以化难为易,提高解题能力。

Objective: To explore the application of the method of prespecified and adjusted width of confidence interval.

目的:探讨预设和调节疫苗效力可信区间宽度方法在评价疫苗保护效果方法的应用。

According to the shortage of conventional analyze methods, the conjugate indoor heat transfer field is systematically analyzed, and the conjugate solving method of building envelope heat conduction and indoor airflow field is founded.

根据传统分析方法的不足,系统分析共轭传热室内流场,建立建筑围护结构传导与室内流场耦合求解方法。

The validity of the method depends on the continuation of the method and the final objective.

方法的有效性取决于方法与最终目标连续。

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。

With regard to Space Club Convergence the thesis deems that its distinguishing should abide by firstly using Exploratory Spatial Data Analysis to divide space regional groups and then choosing suitable spatial autoregressive model or spatial error model and spatial cross-regressive model to examine Space Club Convergence in the same group.

在对区域分组方法的讨论中,本文通过对各种方法的优缺点的比较后认为,能够充分考虑各种经济增长影响因素的相似性,并提取分组过程中各因素重要性的分类回归树分析方法是较适合时间俱乐部趋同的区域分组方法。

On the basis of Chebyshev curve fitting method, a new method to design worn profile tread is proposed by this paper.

本文在切比雪夫曲线拟合方法的基础上,提出了一种高次曲线磨耗形踏面的设计方法。

Methods 96 leg trauma cases were randomly divided into 2 groups, 48 cases treated with Buerger training methods served as experimental group and 48 cases with routine taining methods served as control group, then the symptoms of pain,swell,cyanosis appeared on wounded legs were observed.

方法将96例下肢创伤患者随机分为实验组和对照组,实验组48例采用Buerger运动进行康复训练,对照组48例采用传统功能锻炼法进行康复训练,观察两组患者下床活动后患肢肿胀、疼痛和紫绀情况,比较两种方法的康复效果。

In this study, for the complicated distribution of dose rate in time and space, considering the repair of the sub-death cells, the radionuclide decay law and exponential proliferation of clonogenic cells, the dose-response relationship is built based on the known linear-quadratic model, and the concept of tumor control probability is introduced into the therapy method. Furthermore, the concepts about "curable stage" and "critical time point" and the methods calculating the amount of radionuclide injected into tumor in clinical are proposed.

本课题针对这一方法中靶区复杂的剂量率时-空分布特点,以公认的"线性-二次模型"理论为基础,同时考虑亚致死性细胞修复、核素衰变规律和克隆原性细胞指数增殖,建立了适合这一治疗方法的具有时-空分布特点的剂量效应关系,并进一步将肿瘤控制概率的概念引入这一方法中,提出了"治愈期"及"临界时间点"的概念以及由此指导临床确定药物注射剂量的方法。

To improve some deficiency of calculation of reliability index in response surface method, point estimation of probability moment deduced by Resonbluth was introduced into response surface method.

针对响应面可靠度指标计算方法的缺陷,将罗森布鲁斯统计矩点估计法引入到经典响应面方法中对其进行改进。

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推荐网络例句

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车,和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特,那个是爱朗。

Articulate the aims, objectives and key aspects of a strategic business plan.

明确的宗旨,目标和重点战略业务计划。