查询词典 stochastic dynamic programming

Fifthly, we research the problem about the stochastic fluctuate of the contents of organic compounds and microelements in the land under the assumption continuous-time model. The first, a dynamic model about fertility of plowland is presented using stochastic diffusion processes and distributed parameter system.

在分析了农业耕地中有机物含量及微量元素含量的随机变化过程的基础上，利用扩散随机过程理论及分布参数系统建立分析模型描述耕地肥力的分布状况；研究了以维护耕地最优质量状态作为目标值的最优控制问题。

The stochastic finite element method can consider the random variables which are associated with soil properties, changeable loads, geometric conditions. The stochasitic properties of parameters and seismics will affect the interaction between soil and pile and the stochastic method is a trend to analyze the problem of pile-soil dynamic interaction.

参数和地震激励的随机性对土-结构动力相互作用的影响，土与结构动力学参数的不确定性和地震激励的随机性是众所周知的，其对结构响应的影响也是很重要的，对于结构的地震响应有重要影响的土-结构动力相互作用考虑各种随机因素的影响也是必然的发展趋势。

The volatility of Chinese stock market is investigated using the dynamic version of stochastic volatility model, and Bayesian analysis based on MCMC is introduced to improve the parameters estimation in stochastic volatility model.

采用动态随机波动性模型实证研究了中国股票市场的波动性。通过基于马尔可夫链蒙特卡罗模拟的贝叶斯分析方法，较好地估计了随机波动性模型中的参数与波动性序列。

Finally, we apply the factor analysis of the interest rate risk factors that change the yield curve of bond. Based on the comparison of the static models and stochastic models, we bring forward a dynamic stochastic risk management model of interest rate. In addition to this, we conduct an empirical examination of the management of risk immunized bond portfolios.

最后，本文运用因素分析法对影响债券市场收益率曲线的利率风险因素进行了分析，然后在比较利率风险管理静态模型和随机模型的基础上提出了一个动态随机利率风险管理模型，并且针对债券市场利率风险免疫的债券组合管理进行了应用研究。

According to work conditions of coal plough, and considering stochastic cutting resistance by coal, single-degree-of-freedom nonlinear stochastic dynamic model of coal plough was presented, and the influences of chain pretension and polygon effect were discussed.

根据刨煤机运行的工况，考虑煤给予刨头的刨削阻力为随机变化的量，建立了刨煤机单自由度非线性随机动力学模型，同时考虑了刨链预紧力、多边形效应因素的影响。

These problems in reality can be classifies into two major categories: transport bilevel programming problems with deterministic user equilibrium constraints and transport bilevel programming problems with stochastic user equilibrium constrain...

此文首先从模型和算法的角度总结了有关这类问题已有的研究成果，接着介绍有关这方面的最新的研究进展，即如何把用户基于平衡原则下的交通网络优化问题的双层规划模型统一地转换为一个连续可微的单层最优化问题，并设计统一的算法。

E. , only are random variables, pointed that every objective important degree commonly is different, built the equivalent deterministic weighted programming model based on fuzzy set theory for multi - objective fuzzy stochastic linear programming.

研究了资源量b为随机变量的多目标随机线性规划问题，指出了多目标规划问题的目标一般不是同等重要的，针对多目标模糊线性规划问题，利用模糊集合理论建立了相应等价的确定性加权模糊随机规划模型。

These problems in reality can be classifies into two major categories: transport bilevel programming problems with deterministic user equilibrium constraints and transport bilevel programming problems with stochastic user equilibrium constraints.

这些问题大致上可以分为二大类：一类是涉及到确定性用户平衡原则；另一类是考虑随机性用户平衡原则。

Secondly, a joint pricing and capacity allocation model is formulated considering bulk demand. Chance constrained programming is used to transform the stochastic model. Numerical examples show our model and method is more near the simulation results than the deterministic programming and bigger learning coefficient leads to higher profit contribution.

接着，建立了考虑批量需求的BTO模式下制造企业定价与能力分配的集成模型，利用机会约束规划方法对此随机模型进行转化和求解，算例仿真表明机会约束规划方法较确定性规划方法更好地反映了随机连续需求的分布和波动特征，其期望利润贡献与仿真结果更接近；学习效率越大，最优价格越低，接受订单数量越多，期望利润贡献越高。

Based on different optimization criteria, this problem is formulated as a chance constrained programming model and a stochastic programming model with recourse.

提出了基于随机模拟的禁忌搜索算法，基于随机机产生的测试问题的实验结果验证了算法的有效性。

Don not attempt to do something which you can not to do.

不要企图做那些办不到的事情。

The expression of CTGF and TNF-αweredetected by immunochemistry and the number of Clara Cells was calculated.

光镜下观察肺组织的病理变化，采用免疫组化染色观察肺组织中结缔组织生长因子和肿瘤坏死因子-α的表达和Clara细胞的数量。