查询词典 presents
- 与 presents 相关的网络例句 [注:此内容来源于网络,仅供参考]
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This paper presents main part of hardware and software design of the controlling system.
本文对该控制系统软硬件设计的主要内容进行了阐述。
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This presents a conundrum for Apple longer term, but for now it maintains its current strategy.
这一个谜团,为苹果长期的,但现在它保持目前的策略。
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This paper presents the application of laser speckle photography in the study of convective heat transfer.
0引言 对流换热的实验研究中,经常遇到一些试验段较长、温度梯度较大的流场。
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Thisthesis presents a theoretical model that can be used to describe the convergence behavior ofthe algorithm.
论文阐述了该算法的算法模型并且从理论上分析了该算法的收敛性质并初步应用于解决电力系统中的问题。
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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。
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In the system of anti-active-interference, we introduce the FBLMS algorithm which can overcome the drawback of exacerbation of the convergence properties in the domain of time due to eigenvalue spread of input signal correlation matrix and improve the processing rate because of the parallel properties of the FBLMS algorithm. After discussing the properties of the FBLMS algorithm and its developed algorithm, the paper presents the result of computer simulation and proves the reasonableness and feasibility of canceling the active interference in frequency agility fuse.
在捷变频引信抗有源干扰系统中,引入了频域自适应滤波算法FBLMS,可以克服输入信号相关矩阵特征值分散所导致的时域横向滤波算法收敛特性恶化的缺点,并且,由于算法的并行处理特性,大大提高了算法的实时处理性能,本文在分析了频域FBLMS算法的性能和改进算法后,给出了计算机模拟仿真结果,验证了对捷变频引信有源干扰抑制的合理性和可行性。
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For the compact operators series and Eberlein-Smulian theorem,first,it presents acharacterization of unconditional convergent series for the case of sequentially complete lo-cally convex spaces.
关于紧算子级数与〓定理,首先给出了序列完备局部凸空间中无条件收敛级数的一个特征。
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At first, it presents a survey of the studyhistory as well as present situation in the λ-multiplier convergent series,invariant, infinite matrix algebras, Schur-matrices and p-uniform Toeplitzmatrices and the Eberlein-Smulian theorem, etc.
本文共5章。首先回顾了〓数乘收敛级数、不变性、无穷矩阵代数、Schur—矩阵与p-一致Toeplitz矩阵以及Eberlein-Smulian定理等的研究历史和现状。
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For solving problem (1), this dissertation first presents a sufficient and necessary condition by dealing with inequalities using projection operator in convex analysis, and then proposes a kind of new neural network model based on the constraint domain:〓(2) Where P is a projection operator on Q.
本文利用凸分析中的投影算子处理不等式约束,首先给出二次规划问题(1)解存在的充分和必要条件,据于此提出一种新的基于约束区域神经网络模型〓(2)来进行求解,其中P为Q上的投影算子。
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It was found that the relationship between the nonsmooth appearance of leaf surface and its wettability is very strong, and the shape and distribution of the non-smooth elements are the decisive factors. The surface with regular distribution of convex elements presents large contact angle, strong water repellence, and good self-clearing ability, and that of hairy non-smooth elements takes the nextplace.
试验结果表明,植物表面具有的非光滑形态与表面润湿能力的强弱有极大的关系,非光滑单元体的形状和分布是影响植物表面憎水性强弱的决定性因素;规律分布凸包形非光滑单元体的植物表面的憎水性强,脱附效果好;规律密布表皮毛形非光滑单元体次之。
- 相关中文对照歌词
- Carseat (God's Presents)
- Presents To Send You
- Presents From The Poison-Hearted
- Fortune Presents Gifts Not According To The Book
- Upon Settling On The Frozen Island, Lecithin Presents Claude And Coquelicot With His Animal Creations For Them To Approve Or Reject
- 推荐网络例句
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She gently rebuff ed him, but agreed that they could be friends
她婉言拒绝了,但同意作为朋友相处。
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If in the penal farm, you were sure to be criticized.
要是在劳改农场,你等着挨绳子吧!
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Several theories about reigniting and extinguishing of the arc have been refered.
本文综合考虑了几种电弧重燃和熄灭理论。