尺度参数

The conservation of energy and angular momentum of the model is tested.

通过引入β平面近似，半地转近似，引入适合的加热场的参数化方案，在气压梯度力的描写中引进静力扣除方案，建立了低纬度大气大尺度定常运动模式，证明了模式的能量和角动量守恒性质。

The main purpose is to make the convective scheme more active, thus reducing the grid scale convection.

改进的主要目的是使对流参数化方案更活跃，从而减少格点尺度对流的发生。

According to the problem of artillery control system and simulated annealing algorithm,a new improved simulated annealing algorithm,a simulated annealing algorithm based DFP is designed,and it is applied to PID control of artillery control system.

针对现有火炮控制系统与模拟退火算法优化存在的问题，提出了一种改进的模拟退火算法用于火炮控制系统PID 参数寻优的方案，即基于变尺度法的模拟退火算法。

Based on DFP gradient method and the theory of elastic visco-plasticity and that of finite element method, the deficiency and objection existing in present stochastic back analysis methods have been deeply studied in this paper in order to provide much more reliable parameter for the mechanical analysis of geological engineering structures.

本文基于变尺度梯度优化方法和弹-粘塑性原理及其有限元基本理论，针对随机反分析方法存在的缺陷和不足进行研究，以期为实际岩土工程结构的力学分析提供更加可靠的材料参数。

Dimensional analysis is used on basic equations in order to estimate the quantities of different wave effects.

研究的内容主要包括：通过多重尺度展开方法，将波浪的影响参数化，推导出考虑波浪影响的潮流控制方程。

During the calculation the results got by quintic spline kernel was the best so it was chosen as the proper kernel for the SPH simulation. By comparison of the simulation results got by SPH and finite volume method, it was proved that the buffer cells method proposed in the SPH simulation to implement the Dirichlet boundary conditions was accurate, and this is of great importance for the simulation of flows pass a pipe. At last, the SPH method was improved to simulate the liquid-solid two phase flows and the results show that this method was appropriate for the simulation of flows containing viscous fluid and macroscopic solid components. Now the two methods are both able to predict the continuum flows and rarefied flows severally, but the hybrid program still has some aspects to be improved.

首先用标准算例验证了SPH方法的理论模型和计算程序的准确性；通过比较确定选用五次样条核作为计算低雷诺数下的粘性连续流动时的核函数；采用SPH方法和有限体积法分别对同一管道流动进行了对比计算，证明了本文提出的边界缓冲区方法在实现SPH方法中的流体边界条件时的有效性，解决了SPH方法模拟管道流动时的一个关键问题；巧妙地使用SPH方法对化工分离流动中常见的固液两相流及固液耦合作用进行了模拟尝试，获得了较好的结果；在跨尺度计算方面，目前两个子程序已经能够分别模拟连续的和稀薄的二维管流问题，二者的耦合计算程序还处于调试和优化阶段，各个参数对于计算精度和计算速度的影响规律仍在探索中。

The effect of surface friction on the structure of front and frontogenesis is investigated by using the cloud model in which the large-scale deformation field is taken into consideration.

利用加入大尺度变形场作用的非静力模式，研究了地面摩擦对锋生和锋面结构的影响，在变形场锋生条件下，对不同模式格距、不同湍流参数化方案、不同变形场强度、考虑与不考虑地面摩擦等情形进行了比较，在考虑地面摩擦拖曳作用后得到了类似重力流结构的边界层锋面特征。

Connecting rods ; Paths ; Prescribed timing ; Dimensional synthesis ; Harmonic waves ; Characteristics ; Parameters ; Optimization

连杆；轨迹；预定时标；尺度综合；谐波；特征；参数；最佳化

Results showed that Latin Hypercube sampling can capture more variability in the sample space than simple random...

这表明由地统计学随机模拟所参数化的LANDIS模型可用于大时空尺度森林景观变化的预测

The agreements show that the statistical second-order two-scale method is feasible to predict mechanical parameters of inconsistently random composites.

结果说明统计的二阶双尺度方法对于预测非一致随机分布复合材料的力学参数是有效的。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。