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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。

In view of the many different interpretations of the systematics of these snakes, a "taxonomic conversion table" is provided here, with the aim of allowing the classifications used in different publications to be related to each other.

鉴于亚洲蝮在分类学上的许多不同译法，在这里提供了一份以适用于互相关联的不同出版物之间的"分类学转换表格"。

It is proposing to sell convertible bonds to Chinalco that would raise cash up front and convert to equity later, allowing Chinalco to increase its 9 per cent stake in the group.

力拓打算向中铝出售可转换债券，先期筹集资金，而后转为股权，这将令中铝提高其在力拓集团9%的持股比例。

You will be able to work faster because the CopperHead XD sets grade automatically, allowing the operator to move quickly and efficiently through the work area.

您将可以更快地工作，因为铜斑蛇微型自动套级，使运营商能够通过移动工作区速度和效率。

The coronagraph has been used to block the light from the brightstar allowing the search for the dim glow of the planet HR 8799b.

通过星冕仪技术，明亮的恒星光全部被遮蔽，以便我们寻找行星HR 8799b的微弱光芒。

The coronagraph has been used to block the light from the brightstar allowing the search for the dim glow of the planetHR 8799b.

通过星冕仪技术，明亮的恒星光全部被遮蔽，以便我们寻找行星HR 8799b的微弱光芒（PS：我们在Photoshop中可以做类似操作，把中央区域给全部dell后，整个图片的亮度、对比度等都会有巨大改变，继续做大幅度增加亮度、对比度操作，有近似的效果——译注）。

Our corsetry is based on original Victorian patterns and techniques sculpting the classic hour-glass figure to perfection allowing each bride to feel as if it were created just for her.

我们corsetry是基于原有的维多利亚式的模式和技巧造型经典小时玻璃数字尽善尽美，让每一个新娘的感觉，因为如果它创造的只是她的下落。

Allowing for inflation,the cost of the project is $2 million.

考虑到通货膨胀的因素，这个项目的费用为200万美元。

Allowing for inflation, the cost of the project will be 2 $ million.

考虑到通货膨胀，这个工程的成本将是两百万美元。

Allowing for inflation, the cost of the project will be $2 million.

考虑到通货膨胀，这项工程的费用应该是200万美元。

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％。