查询词典 computing time

In the computation of aerodynamic forces, the present work is based on the work of Morino et al., but the following aspects are improved:(1) In computing the steady transonic aerodynamic load, the steady transonic nonlinear integral equation is solved by relaxation-iteration method in this thesis, instead of solving the time dependent transonic nonlinear integral equation, so that the computing time is saved greatly;(2) The influence coeifficients represented by volume integral are transformed to surface integral by using the Gaussian Theorem, so the analytical form of these coeifficients can be obtained and this leads to be more convenient to analyse and compile computer program;(3) The shock capturing method is used in every time step in present work, no shock moving term is added in the integral equation, so that it is more convenient and simpler to treat.

在气动力计算方面，本文基于Morino等人的工作，作了如下几方面的改进：（1）在计算定常跨音速流场（作为非定常绕流计算的初场）时，本文采用松驰迭代法直接求解跨音速定常非线性积分方程，而不是采用时间相关法求解非定常非线性积分方程，这样大大节省了计算机时；（2）将以体积分形式出现的影响系数化为面积分，并获得解析公式，这样便于分析和编写程序；（3）对运动的激波，本文通过在每一个时间步长上采用激波捕捉法而得到，而不是在积分方程中附加激波运动项，因而处理起来简单方便得多。

Compared with volume model, surface model can greatly decrease the computing time to make it fulfill the real time computing requirement; the additional retro-force to original position is to simulate the stick behavior of soft tissue; Chain Mail and Level Tree model can quickly calculate out the vertex displacement and its spread.

相对于体模型，面模型可以大大简化计算量，使之达到实时的要求；通过增加顶点相对于原始位置的回归力部分来模拟软组织的粘滞特性；Chain Mail和Level Tree模型可以迅速实时的计算出外力作用下的顶点位移与传播。

Utilizing the equilibria of pull and press and the dispersion between placed and unplaced steel bar specimens, this paper put forward the shrinkage stress-time computing formula and elastic modulus-time computing formula of merchandise concrete that offered the reference for controlling merchandise concrete cracks.

利用拉压平衡和同条件下素商品混凝土试件和配筋商品混凝土试件的收缩差值，给出了商品混凝土时随收缩应力计算公式和以及商品混凝土时随弹性模量的计算公式，为控制商品混凝土收缩裂缝提供了依据。

The model has the following features: 1 The security information provided by the assessment result is more dependable because of the consideration of some main uncertain factors; 2 The improved analytic method of power system DSR and the dynamic equivalent technologies are applied to reduce the computing time and to make the model more practical; 3 Step-up assessment strategy is adopted in order to balance the precision and computing time requirements; 4 Decompounding of system insecurity indexes to each system component, or to each generator and consumer, and the visualization of assessment results, will help the operators to understand the security status of the power system more clearly; 5 The assessment results can be beneficial to the preventive control in traditional power systems and the security pricing in power market environments.

模型具有如下特点： 1由于综合考虑了一些不确定因素对系统安全性的影响，使得评估结果更加可靠； 2采用求解电力系统动态安全域的改进解析法，结合动态降维技术，大大减少了动态安全域的计算时间，使得模型比较实用； 3采取逐步递进的评估策略，以适应计算精度和计算时间要求； 4可定量分解出各元件或各发电与用户对系统不安全的贡献，配以形象直观的评估结果显示，使操作人员清楚了解系统的安全状况； 5评估结果在传统电力系统可帮助制定预防控制措施，在电力市场可用于安全性定价。

There are many noise sources in measuring the seismometer transfer function, the main noise sources are investigated. The method of cross-special analysis is presented, flow process diagram of computing is given, the algorithms are discussed in detail, such as low-pass digital filter, computing of seismometer transfer function initial values, time domain convolution, bilinear transformation, estimation of power spectrum and cross-spectrum, window functions and preprocessing of measuring data etc.

在地震计传递函数测试过程中的存在多中噪声，本文分析了主要的噪声来源；介绍了用互谱分析方法测试地震计频率特性的基本原理和方法；给出采用该方法确定地震计传递函数的算法流程图；并对计算过程中采用的低通滤波器、地震计传递函数的初值确定方法、卷积运算方法、自谱和互谱估计、采用的窗函数和测试数据的预处理进行了详细讨论。

The computing complexity and computing time of this algorithm is lower than that of existed algorithms.

该算法比已有的块三对角矩阵求逆算法的计算复杂度和计算时间低。

Some new method is presented in this paper: A. An Integrated parameters computation method to analysis asynchronous operation of the turbine generator is given, including the equivalence of short circuit and open circuit of field windings, deducing boundary condition of 〓 method and computing frequency parameters. B. A new memory structure for sparse complex matrix and a PCCG method based on it are introduced to save memory and computation time. C. An equivalent method of vacuum is presented, and effectively eliminate the effect of corner point and accelerate convergence of PCCG method. D. Coupling the computation of electromagnetic and temperature field is discussed and model for computing temperature field of the turbine generator rotor at asynchronous operation is built.

文中提出了以下新方法：(1)在失磁异步运行转子三维涡流场计算中提出了完整的参数计算方法，其中包括励磁绕组开、短路的等效，〓法边界条件的推导及频率参数的计算方法；(2)提出了铁心内空气域的等效方法，有效地解决了开槽引起的角点奇异问题，并提高了方程组的迭代收敛速度；(3)在〓法有限元模型中，创立了一种能节约内存、提高计算速度的压缩存储矩阵格式，并建立了基于该格式的方程组解法；(4)提出了涡流电磁场和温度场两种不同场计算的合理结合方法，建立了转子三维稳态和时变温度场的有限元计算模型。

Furthermore, the relation of random walk times and computing time and computing errors is analyzed in-depth.

还分析了随机游动的次数和所用计算机机时之间的关系图；随机游动次数和误差之间的关系；迭代次数和误差之间的关系。

Bt the same time, the concept of utility computing became a focus of IT design and operations. Bs Nick Darr observed in 你好s book The Big Switch, computing services infrastructure was beginning to parallel the development of electricity as a utility. Wouldn't it be great if you could purchase compute resources, on demand, only paying for what you need, when you need it?

同时，作用计较的观点成为IT预设和操作的焦点正如Nick Darr在The Big Switch一书中所说，计较服务基础设施已起头成长成象电力公用设施同样要是你能仅在需要的时辰采办计较资源，支付你所用的部分，这莫非不是一件很正确的工作吗？

Bt the same time, the concept of utility computing became a focus of IT design and operations. Bs Nick Darr observed in hellos book The Big Switch, computing services infrastructure was beginning to parallel the development of electricity as a utility. Wouldn't it be great if you could purchase compute resources, on demand, only paying for what you need, when you need it?

同时，作用计算的观点成为IT预设和操作的焦点正如Nick Darr在The Big Switch一书中所说，计算办事根蒂根基举措措施已起头成长成象电力公用举措措施一样要是你能仅在需要的时辰采办计算资源，付出你所用的部分，这莫非不是一件很正确的工作吗？

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。