查询词典 computing time

But it demands the higher computational accuracy. Time-dependent LU-SGS method and close coupled full implicit finite volume scheme are used. The AUSMPW+ based on the three-order MUSCL difference scheme is used for the inviscid operator, and the maximum eigenvalue splitting method is used to convert matrix operation to algebraic operation in order to shorten the computing time.

运用时间相关的LU-SGS方法，采用强耦合的全隐式有限体积进行离散，其中无粘对流项采用三阶MUSCL型差分的AUSMPW+格式，并应用最大特征值分裂，将矩阵运算转化为代数运算，大大缩短了计算时间。

It is related to the variational inequality problem, bilinear programming, nonlinear equation. So there is actual meaning and theories value to study how to solve it.In recent years, many algorithms for solving the generalized linear complementarity problem are put forward. But they basically belong to the traditional iterative methods, and may not be efficient since the computing time required for a solution is greatly dependent on the dimension, structure of the problem and the complexity of the algorithm used. Different from the traditional algorithms, the neural network has many advantages on calculations and real-time applications for its inherent massive parallelism and electric circuit implementation.

近年来，人们对广义线性互补问题提出了许多算法，但这些方法基本上属于传统的迭代法，由于它们的计算时间极大地依赖于问题的规模、维数以及所使用的算法，因此很难满足实时并行的要求，与传统数值方法不同，由于内在的并行分布处理信息的特点及电路实现的潜能，神经网络有着许多计算上的优势和实时性的应用，自Hopfield提出著名的人工神经网络模型-Hopfield神经网络，并将其成功应用于优化问题后，用神经网络求解优化问题得到了相当深入的研究，并取得了许多重要的成果。

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。

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。

Weeks of computing time, 3 weeks of wall clock time

两个星期的计算机时间，3个星期的日历时间。

Adjacency search, double linked element list, random direction search, adjacency rotation, and heredity of geometrical quantities are applied to increase the efficiency of mesh generation. The relationship between the computing time and the number of generated elements is nearly linear and the time complexity is O(N^1.05), where N is the number of elements.

采用了邻接单元搜索、双向链表存储、随机方向搜索、邻接旋转、几何量继承等技术，使算法的计算时间与生成单元数近似呈线性关系，时间复杂度达到O(N^1.05)，N为生成单元数。

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。

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。

A parallel computing model is presented, based on migration-dependency. A Scalable Parallel Run-time Library is developed to solve all the key difficult problems such as dynamic data dependency analysis, synchronization, communication, and load balancing.

提出了基于迁移相关的DSMC并行计算模型，采用了可扩展并行运行时库(Run—time Library)来解决程序运行过程中动态的相关性分析、同步通信、负载平衡等难题。

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。

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％。