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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。

After analyzing the limitation of slow convergence in adaptive Least Mean Square algorithm, it is brought forward the method of transforming signal into frequency domain, taking advantage of the orthogonality of discrete Fourier transform, the adaptive LMS filter is performed for each frequency element in transform domain.

四川大学博士学位论文在频域自适应滤波的基础上，提出了一种权值反馈方法抑制图像传输中的多个大功率平稳强窄带干扰信号，不仅能加快算法的收敛性能，并具有良好的滤波效果。

Then what's the advantage of the convertible bond?

那么可转换债券究竟有哪些优势呢？

The main contents of this research are as follows:Firstly, the limitation of probabilistic theory and the advantage of using the convex set theory under certain condition are discussed.

主要研究内容如下：首先，本文对概率模型的局限性和在一定的条件下，采用凸集模型处理不确定问题的优越性进行了论述。

Provider of plan of the domestic information consumption that precedes as home and t of e of n of r of e of t of enterprise I n , company of sea letter computer already was rolled out " lightning " graphical workstation, become home market to have extensive and famous degree, consequence and popular unabated product, have computational property price of powerful, sex has compared capability of processing of advantageous, graph to wait for an advantage, wide application receives in railroad, war industry, car, agriculture machinery, home appliance, mould, shipbuilding and domain of boat cool one's heels.

作为国内领先的家庭信息消费与企业Internet方案提供商，海信计算机公司已推出"闪电"图形工作站，并成为国内市场具有广泛知名度、影响力和畅销不衰的产品，具有计算性能优越、图形处理能力强大、性价比好等优点，在铁路、军工、汽车、农机、家电、模具、造船和航空等领域得到广泛的应用。

Money pays a distinct advantage that depends on oneself, sell a domain to hold lead dominant position all the time continuously in airline ticket, reach the strategy to cooperate with airline of cool one's heels of Na Hang, deep boat, age boat early or late.

财付通凭借自身的独特优势，在机票直销领域一直占据领先优势，先后与南航、深航、春秋航空等航空公司达成战略合作。

There is also a commercial culture of the greatest advantage is that it can not be copied counterparts.

还有一种商业文化的最大优势是，它不能被复制的对应。

We have strong ability and advantage in the development, designing, copying and technology of product.

在产品的研发、设计、复制、技改上有很强的能力和优势。

This picturesque attire set him off to great advantage; and when he had bound the scarf around his waist, and when his hat, placed coquettishly on one side, let fall on his shoulder a stream of ribbons, Franz was forced to confess that costume has much to do with the physical superiority we accord to certain nations.

这一漂亮的打扮简直使他帅劲十足。当他把风流花阔带围到腰上，戴上帽子，并把帽子很潇洒地歪在一边，使一绺丝带垂到肩头上的时候，弗兰兹不得不承认那种装束颇富于自然美。

ISO9002 quality system certification and maintenance, product quality mark has entered the ranks of international competition; ERP, JIT, and other management software used, that companies in the process of recycling, resource planning, time competition, the use of synchronous manufacturing won the advantage ahead of the The development of new products to meet market provides a good hardware, such hardware and software to build the perfect combination of the Coquimbo strong vitality.

ISO9002质量体系的认证与维持，标志着产品质量迈入了国际竞争行列；ERP、JIT等管理软件的运用，使公司在过程再造、资源计划、时间竞争、同步制造运用方面赢得了优势；超前的新产品开发为适应市场提供了良好硬件，这种硬件与软件的完美组合构筑了金博强大的生命力。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。